CN211318969U - Light source module and projection device - Google Patents

Abstract

The utility model relates to a light source module and projection arrangement. The light source module is used for providing laser beams and comprises a plurality of laser light source units and a focusing lens. The laser light source units comprise a first laser light source unit and a second laser light source unit which are respectively used for providing a first laser beam and a second laser beam. The focusing lens is positioned on a transmission path of the first laser beam and the second laser beam, the first laser beam and the second laser beam are respectively incident on the focusing lens along a first direction, and the first laser light source unit and the second laser light source unit are arranged along a second direction. The utility model discloses realize small volume and succinct light path design to compromise radiating efficiency simultaneously. In addition, through the arrangement of the first light combination unit and the second light combination unit, the first laser beam, the second laser beam, the third laser beam and the fourth laser beam can be uniformly incident on each area of the light incident surface of the condensing lens, the light receiving efficiency is improved, and the illuminating light beams have good color expression.

Description

Light source module and projection device

technical field

The utility model relates to an optical module and an optical device including the optical module, in particular to a light source module and a projection device.

Background technique

Recently, projection devices based on solid-state light sources such as light-emitting diodes (LEDs) and laser diodes (laser diodes) have gradually gained a place in the market. Generally speaking, the excitation light of these solid-state light sources will be converted by the wavelength conversion material on the wavelength conversion module in the projection device to generate converted light of different colors. In addition, in order to meet the requirements of color performance, a filter module is placed on the rear optical path of the projection device, and the converted light on the wavelength conversion module is filtered by the filter module to filter out a predetermined color light. These color lights are modulated by the light valve to project the image beam to the outside world.

Specifically, in recent years, the light-emitting unit of Multi-Colour Laser (MCL) has been applied to mainstream models in projection devices (for example, models with a luminous flux between 2000 lumens and 5000 lumens). ). Generally speaking, when the light-emitting unit of the compound laser light source technology is applied to the aforementioned models of the projection device, the number of the light-emitting units is about 1 to 2 to achieve the target brightness.

However, when it is to be applied to a type of projection device with high brightness requirements, the number of light-emitting units of the hybrid laser light source technology needs to be increased accordingly. In this way, the space requirements for the design of the light-combining light path in the projection device also increase, and the space design requirements for the configuration methods such as circuit connection, mechanism fixing, and heat-dissipating heat pipe connection of the compound laser light source technology also need to be changed accordingly. , in order to take into account the overall optical, circuit and heat transfer performance. As a result, it will be difficult to reduce the volume of the overall device, and the design difficulty of related optical path design and mechanism configuration will also increase.

The "Background Art" section is only used to help understand the content of the present invention, so the content disclosed in the "Background Art" section may contain some prior art that is not known to those of ordinary skill in the art. The content disclosed in the "Background Art" section does not represent the content or the problem to be solved by one or more embodiments of the present invention, and has been known or recognized by those of ordinary skill in the art before the present invention is applied for. .

SUMMARY OF THE INVENTION

The utility model provides a light source module, which has a small volume and a simple optical path design.

The utility model provides a projection device, which has a small volume and a simple optical path design.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve one or part or all of the above purposes or other purposes, an embodiment of the present invention provides a light source module. The light source module is used to provide a laser beam, and includes a plurality of laser light source units and a focusing lens. The plurality of laser light source units include a first laser light source unit and a second laser light source unit, which are respectively used for providing the first laser beam and the second laser beam. The focusing lens is located on the transmission path of the first laser beam and the second laser beam, wherein the first laser beam and the second laser beam are respectively incident on the focusing lens along the first direction, and the first laser light source unit and the second laser light source unit are along the They are arranged along the second direction, and when viewed along the third direction, the first laser light source unit and the second laser light source unit do not overlap, and the first direction, the second direction and the third direction are perpendicular to each other.

To achieve one or part or all of the above purposes or other purposes, an embodiment of the present invention provides a projection device. The projection device includes an illumination system, a light valve and a projection lens. The illumination system is adapted to provide an illumination beam, and includes the aforementioned light source module. The light valve is arranged on the transmission path of the illumination beam and is suitable for converting the illumination beam into an image beam. The projection lens is arranged on the transmission path of the image beam and is suitable for projecting the image beam out of the projection device.

Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the projection device and the light source module can be arranged through the dislocation arrangement of the first laser light source unit and the second laser light source unit, so that the first laser light source unit and the second laser light source unit can be arranged On the same plane, there are independent heat dissipation modules and heat pipes, thereby realizing the miniaturization of the projection device and the light source module, and having a simple optical path design. In addition, the projection device and the light source module make the first laser beam, the second laser beam, the third laser beam and the fourth laser beam uniformly incident to the focusing unit through the arrangement of the first light combining unit and the second light combining unit. On each area of the light incident surface of the optical lens, the light collection efficiency is improved, and the illumination beam can have good color performance.

In order to make the above-mentioned features and advantages of the present utility model more obvious and easy to understand, the following examples are given and described in detail in conjunction with the accompanying drawings as follows.

Description of drawings

FIG. 1 is a schematic structural diagram of a projection device according to an embodiment of the present invention.

FIG. 2A is a perspective structural view of the light source module of FIG. 1 .

FIG. 2B is a top view of the light source module of FIG. 1 .

FIG. 2C is a front view of the light source module of FIG. 1 .

3A and FIG. 3C are schematic diagrams of different structures of the first laser light source unit and the second laser light source unit of FIG. 2A .

FIG. 3B is a perspective view of each laser light source unit of FIG. 2A .

FIG. 3D is a schematic structural diagram of the first light combining unit or the second light combining unit of FIG. 2A .

4A to 4B are schematic structural diagrams of a first light combining unit and a second light combining unit according to another embodiment of the present invention.

5A to 5B are schematic structural diagrams of a first light combining unit and a second light combining unit according to still another embodiment of the present invention.

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiments in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only referring to the directions of the drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.

FIG. 1 is a schematic structural diagram of a projection device according to an embodiment of the present invention. Referring to FIG. 1 , the projection apparatus 200 includes an illumination system LS, a light valve 210 and a projection lens 220 . The illumination system LS is adapted to provide an illumination beam 70 . The light valve 210 is disposed on the transmission path of the illumination beam 70 and is suitable for converting the illumination beam 70 into the image beam 80 . The projection lens 220 is disposed on the transmission path of the image beam 80 and is suitable for projecting the image beam 80 out of the projection device 200 . In this embodiment, the number of light valves 210 is one, but the present invention is not limited to this. In other embodiments, the number of light valves 210 may also be multiple. In addition, in this embodiment, the light valve 210 may be a digital micro-mirror device (DMD) or a liquid-crystal-on-silicon panel (LCOS panel). However, in other embodiments, the light valve 210 may also be a transmissive liquid crystal panel or other beam modulators.

Specifically, as shown in FIG. 1 , in this embodiment, the lighting system LS includes a light source module 100 , a wavelength conversion module PM, and a filter module FM. The structure of the light source module 100 will be further described below with reference to FIGS. 2A to 3D .

Please refer to FIGS. 2A to 3D . FIG. 2A is a three-dimensional structural diagram of the light source module of FIG. 1 . FIG. 2B is a top view of the light source module of FIG. 1 . FIG. 2C is a front view of the light source module of FIG. 1 . 3A and FIG. 3C are schematic diagrams of different structures of the first laser light source unit and the second laser light source unit of FIG. 2A . FIG. 3B is a perspective view of each laser light source unit of FIG. 2A . FIG. 3D is a schematic structural diagram of the first light combining unit or the second light combining unit of FIG. 2A . Specifically, as shown in FIGS. 2A to 2C , in this embodiment, the light source module 100 is used to provide the laser beam 50 (shown in FIG. 1 ), and includes a plurality of laser light source units 110 and a first light combining unit 120 , the second light combining unit 130 and the focusing lens 140 .

More specifically, as shown in FIGS. 2A to 2C , in this embodiment, the plurality of laser light source units 110 include a first laser light source unit 111 , a second laser light source unit 112 , a third laser light source unit 113 and a fourth laser light source unit 111 . The laser light source unit 114 (hereinafter, if the common features of the first laser light source unit 111, the second laser light source unit 112, the third laser light source unit 113, and the fourth laser light source unit 114 are described, it will be represented by the laser light source unit LU ). For example, in this embodiment, the laser light source unit LU may be a multi-color laser light source unit (Multi-Colour Laser, MCL).

3A to 3C , in this embodiment, the laser light source unit LU may include a plurality of light emitting elements LE arranged along an arrangement direction DA, wherein the light emitting elements LE in the same row are connected in series with each other. Taking FIG. 3B as an example, there are five light-emitting elements LE on the same row, but the present invention is not limited to this. In addition, as shown in FIG. 3B , there are a plurality of pins PN next to the laser light source unit LU to receive signals transmitted from the circuit board.

Moreover, as shown in FIG. 2B , in this embodiment, the first laser light source unit 111 , the second laser light source unit 112 , the third laser light source unit 113 and the fourth laser light source unit 114 are respectively used to provide the first laser beam 50L1 , a second laser beam 50L2, a third laser beam 50L3 and a fourth laser beam 50L4. In this embodiment, the light-emitting elements LE included in the first laser light source unit 111 , the second laser light source unit 112 , the third laser light source unit 113 and the fourth laser light source unit 114 may be the same or different laser diodes, and the first laser light source unit 112 may be the same or different. The first laser beam 50L1 , the second laser beam 50L2 , the third laser beam 50L3 and the fourth laser beam 50L4 may be monochromatic blue laser beams, but the embodiment is not limited thereto. In other embodiments, the first laser beam 50L1 , the second laser beam 50L2 , the third laser beam 50L3 and the fourth laser beam 50L4 may also be laser beams containing multiple colors, so as to increase the brightness while also increasing the brightness. It can provide rich color performance and improve the quality of the image picture.

More specifically, as shown in FIGS. 2A to 2C , in this embodiment, the first laser light source unit 111 and the second laser light source unit 112 face the focusing lens 140 , and the first laser beam 50L1 and the second laser beam 50L2 are respectively Incident on the focusing lens 140 along the first direction D1, and the first laser light source unit 111 and the second laser light source unit 112 are arranged along the second direction D2, and when viewed along the third direction D3, the first laser light source unit 111 and the The second laser light source units 112 do not overlap. In other words, the projection of the first laser light source unit 111 in the second direction D2 does not overlap with the projection of the second laser light source unit 112 in the second direction D2. Moreover, as shown in FIG. 3A , the first laser light source unit 111 includes a first side region RS1, the second laser light source unit 112 includes a second side region RS2, and when viewed along the second direction D2, the first side region RS1 overlaps with The second side area RS2. In other words, the projection of the first side region RS1 on the third direction D3 overlaps the projection of the second side region RS2 on the third direction D3.

In more detail, in order to facilitate the description of the directions of the elements or structures in the light source module 100, as shown in FIG. 2B to FIG. 2C, a rectangular coordinate system is defined below, wherein the rectangular coordinate system takes the center of the focusing lens 140 as the origin O, The x-axis is substantially parallel to the second direction D2, the y-axis is substantially parallel to the third direction D3, and the z-axis is substantially parallel to the first direction D1. That is to say, in this embodiment, the first direction D1, the second direction D2 and the third direction D3 are perpendicular to each other. However, the above-mentioned Cartesian coordinate system only refers to the coordinates of the attached drawings. Therefore, the coordinate terms used are used to illustrate and not to limit the present invention.

Thus, as shown in FIG. 3A , in this embodiment, the first laser light source unit 111 and the second laser light source unit 112 may be closely arranged up and down in the second direction D2 or in a tolerance range. For example, in this embodiment, the range of the shortest distance d1 between the first laser light source unit 111 and the second laser light source unit 112 in the second direction D2 is less than or equal to 2 mm. In this way, the system can be reduced in size and tolerances in assembly can be avoided.

On the other hand, as shown in FIGS. 2A to 2C and FIG. 3A , the first laser light source unit 111 and the second laser light source unit 112 are located on the same side of the same plane P. As shown in FIG. The first direction D1 is perpendicular to the plane P, and the second direction D2 and the third direction D3 are parallel to the plane P. In this way, the disposition of the heat dissipation module TM1 and the heat dissipation module TM2 can be advantageous. For example, in this embodiment, the first laser light source unit 111 and the second laser light source unit 112 are disposed on the same substrate or on the surface of other components (eg, the heat dissipation module TM1 and the heat dissipation module TM2 ). In this way, the heat dissipation module TM1 and the heat dissipation module TM2 can be easily installed.

Further, in this embodiment, the heat dissipation module TM1 and the heat dissipation module TM2 can be connected to the first laser light source unit 111 and the second laser light source unit 112 respectively, and the first laser light source unit 111 and the second laser light source unit are respectively provided behind the 112. Furthermore, as shown in FIG. 3A , the heat dissipation module TM1 and the heat dissipation module TM2 respectively have a plurality of heat pipes HP, and the heat pipes HP extend along an extension direction DE. In this embodiment, the arrangement direction DA of the light emitting elements LE may be parallel to the extending direction DE of the heat pipe HP, but this embodiment is not limited to this.

Furthermore, as shown in FIG. 3A , the first laser light source unit 111 includes a first fixing portion 111F, and the second laser light source unit 112 includes a second fixing portion 112F. More specifically, the first laser light source unit 111 and the second laser light source unit 112 are respectively fixed on the heat dissipation module TM1 and the heat dissipation module TM2 by the arrangement of the first fixing portion 111F and the second fixing portion 112F. For example, the first fixing portion 111F and the second fixing portion 112F can be screws, so that the first laser light source unit 111 and the second laser light source unit 112 can be locked on the heat dissipation module TM1 and the heat dissipation module TM2 respectively.

Furthermore, as shown in FIG. 3A , in this embodiment, the disposition area of the heat pipe HP of the heat dissipation module TM1 and the heat pipe HP of the heat dissipation module TM2 needs to avoid the first fixing portion 111F and the second fixing portion 112F, so as not to affect the configuration of the mechanism . More specifically, the heat pipe HP of the heat dissipation module TM1 is located below the first fixing portion 111F, and the heat pipe HP of the heat dissipation module TM2 is located above the second fixing portion 112F. In other words, in this embodiment, the first laser light source unit 111 and the second laser light source unit 112 have their own independent heat dissipation module TM1 , heat dissipation module TM2 and their heat pipes HP. In this way, compared with the conventional case where two laser light source units are arranged side by side and share the same heat pipe of the heat dissipation module, the first laser light source unit 111 and the second laser light source unit 112 can pass through the independent heat dissipation module TM1 and the heat dissipation module. TM2 dissipates heat to different sides respectively, which can improve the effect of heat dissipation.

On the other hand, as shown in FIG. 3A , the first fixing portion 111F is located in the first side region RS1, and the second fixing portion 112F is located in the second side region RS2. In other words, the first fixing portion 111F and the second fixing portion 112F are located in the The projection on the third direction D3 is located on the overlapping region RO shown in FIG. 3A . In this way, when viewed along the second direction D2, since the first fixing portion 111F and the second fixing portion 112F are substantially overlapped in the third direction D3, the system volume can be further reduced. For example, as shown in FIG. 3A , the centerline of the first fixing portion 111F and the centerline of the second fixing portion 112F are preferably aligned in the third direction D3, that is, the centerline of the first fixing portion 111F is in the third direction D3. The shortest distance between the projection on the three directions D3 and the projection of the center line of the second fixing portion 112F on the third direction D3 is 0. In this way, the disposition area of the heat pipe HP can be maximized while reducing the system volume, and the heat dissipation performance can be taken into account at the same time, but the present invention is not limited to this. For example, as shown in FIG. 3C , the first fixing portion 111F and the second fixing portion 112F may be slightly dislocated, and a similar heat dissipation effect can still be achieved. Specifically, as shown in FIG. 3C , the range of the shortest distance d2 in the third direction D3 between the centerline of the first fixing portion 111F and the centerline of the second fixing portion 112F is less than or equal to 8 mm. In this way, the system volume can be further reduced.

Next, as shown in FIGS. 2B to 2C , the third laser light source unit 113 faces one side in the second direction D2 , and the fourth laser light source unit 114 faces the other side in the second direction D2 . In more detail, the third laser light source unit 113 faces the direction of the negative X-axis, and the fourth laser light source unit 114 faces the direction of the positive X-axis, but the present invention is not limited thereto. In other embodiments, the arrangement directions of the third laser light source unit 113 and the fourth laser light source unit 114 may also be opposite.

Furthermore, as shown in FIGS. 2A to 2C , the first light combining unit 120 is disposed corresponding to the first laser light source unit 111 and the fourth laser light source unit 114 , wherein the first light combining unit 120 has a first transmission region TR1 and a first Reflection area RR1. The second light combining unit 130 is disposed corresponding to the second laser light source unit 112 and the third laser light source unit 113 , wherein the second light combining unit 130 has a second transmission region TR2 and a second reflection region RR2 . For example, in this embodiment, the first reflection region RR1 of the first light combining unit 120 and the second reflection region RR2 of the second light combining unit 130 are formed by a reflective substrate or a substrate coated with a high-reflection coating. On the other hand, the first transmissive region TR1 of the first light combining unit 120 is substantially a region below the first outer frame 121 where no optical elements are provided, and the second transmissive region TR2 of the second light combining unit 130 is substantially It is an area above the second outer frame 132 where no optical elements are provided. The first transmissive region TR1 and the second transmissive region TR2 shown by dotted lines in FIG. 2A are used for comparing their positions in the figure, and do not mean that optical elements are disposed there.

Moreover, as shown in FIG. 3D , in this embodiment, the first light combining unit 120 may further selectively include a first outer frame 121 , the first outer frame 121 surrounds the first reflection region RR1 , and the second light combining unit 130 A second outer frame 132 may also be optionally included, and the second outer frame 132 surrounds the second reflection region RR2. Specifically, in this embodiment, the functions of the first outer frame 121 and the second outer frame 132 are mainly to facilitate adjusting the angles of the first light combining unit 120 and the second light combining unit 130 relative to each laser light source unit LU and Location. Specifically, in this embodiment, the actuator can be connected to the first outer frame 121 and the second outer frame 132 , and the first light combining unit 120 and the second light combining unit 120 and the second combining unit 120 and the second combining unit 120 can be adjusted from the top and bottom at the same time or adjusted from the rear. Light unit 130 . For example, the included angles between the first light combining unit 120 and the fourth laser light source unit 114 and the second light combining unit 130 and the third laser light source unit 113 are preferably 45 degrees, respectively. light efficiency

In the above configuration, as shown in FIGS. 2A to 2C , the first transmission region TR1 is located on the transmission path of the first laser beam 50L1, the second transmission region TR2 is located on the transmission path of the second laser beam 50L2, and the first laser beam The light beam 50L1 and the second laser light beam 50L2 respectively penetrate the first transmission region TR1 and the second transmission region TR2, and are incident on the focusing lens 140 along the first direction D1. On the other hand, the first reflection area RR1 is located on the transmission path of the fourth laser beam 50L4, the fourth laser beam 50L4 is transmitted to the focusing lens 140 via the first reflection area RR1, and the second reflection area RR2 is located in the third laser beam On the transmission path of 50L3, the third laser beam 50L3 is transmitted to the focusing lens 140 via the second reflection region RR2.

Further, as shown in FIGS. 2A to 2C , the focusing lens 140 is located on the transmission paths of the first laser beam 50L1 , the second laser beam 50L2 , the third laser beam 50L3 and the fourth laser beam 50L4 . The first laser beam 50L1, the second laser beam 50L2, the third laser beam 50L3 and the fourth laser beam 50L4 are respectively incident on the first area, the second area, the third area and the fourth area of the light incident surface of the focusing lens 140 , and the projection positions of the first area, the second area, the third area and the fourth area on the rectangular coordinate plane with the center of the focusing lens 140 as the origin O are respectively located in the first quadrant, second quadrant, in each of the third quadrant and the fourth quadrant. For example, in this embodiment, the first area, the second area, the third area and the fourth area are respectively the third quadrant, the first quadrant, the fourth quadrant and the second quadrant of the rectangular coordinate plane. In this way, the first laser beam 50L1, the second laser beam 50L2, the third laser beam 50L3 and the fourth laser beam 50L4 can be uniformly incident on each area of the light incident surface of the focusing lens 140, thereby improving the light-receiving efficiency . However, the present invention is not limited to this. In other embodiments, those of ordinary skill in the art can adjust the first laser beam 50L1 , the second laser beam 50L2 , the third laser beam 50L3 and the fourth laser beam 50L4 to be incident on the light incident surface of the focusing lens 140 respectively according to actual needs , and make it correspond to other positions in the Cartesian coordinate plane. In this way, after passing through the focusing lens 140, the first laser beam 50L1, the second laser beam 50L2, the third laser beam 50L3 and the fourth laser beam 50L4 can form the laser beam 50, which is incident on the subsequent optical modules.

For example, as shown in FIG. 1 , in this embodiment, the wavelength conversion module PM may be located on the transmission path of the laser beam 50 for receiving the laser beam 50 . And, the wavelength conversion module PM includes a wavelength conversion area (not shown) and a non-conversion area (not shown). The wavelength conversion module PM further includes a first driving device (not shown), adapted to make the wavelength conversion area (not shown) and the non-conversion area (not shown) correspondingly enter the irradiation range of the laser beam 50 at different times . Specifically, when the laser beam 50 is incident on the wavelength conversion area of the wavelength conversion module PM, the wavelength conversion beam 60Y of the illumination system LS can be formed through the wavelength conversion area. In this embodiment, the wavelength-converted light beam 60Y is, for example, yellow light. When the laser beam 50 is incident on the non-conversion area of the wavelength conversion module PM, it can be transmitted to the subsequent optical modules through the wavelength conversion module PM.

As shown in FIG. 1 , the filter module FM is located on the transmission path of the excitation beam 50 and the wavelength conversion beam 60Y, and the filter module FM has a filter area (not shown) and a light transmission area (not shown). The filter module FM further includes a second driving device (not shown), adapted to make the filter region (not shown) correspondingly enter the irradiation range of the wavelength conversion beam 60Y at different times, for example, to filter respectively to form red Shades and green shades. On the other hand, the light-transmitting area (not shown) will correspondingly enter the illumination range of the excitation beam 50 transmitted to the filter module FM at different times, so that the excitation beam 50 passes through and forms blue light. . In this way, the excitation light beam 50 and the wavelength conversion light beam 60Y can be sequentially converted into illumination light beams 70 with various colors.

In addition, as shown in FIG. 1 , in this embodiment, the lighting system LS may optionally include an auxiliary light source AL. The auxiliary light source AL is used for emitting an auxiliary light beam 60R, and the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the wavelength conversion light beam 60Y. For example, in this embodiment, the auxiliary light source AL is, for example, a red laser light source or a red light emitting diode light source, and the auxiliary light beam 60R is red light. Moreover, as shown in FIG. 1 , the filter module FM is also located on the transmission path of the auxiliary beam 60R. Moreover, the light-transmitting area (not shown) also enters the illumination range of the auxiliary beam 60R transmitted to the filter module FM at different times, so that the auxiliary beam 60R passes through and forms red light. In this way, the illumination system LS can increase the proportion of red light in the illumination light beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projection image.

On the other hand, as shown in FIG. 1 , in this embodiment, the projection device 200 further includes a light homogenization element LH, which is located on the transmission path of the excitation beam 50 and the wavelength conversion beam 60Y. In this embodiment, the light homogenizing element LH includes an integrating column, but the present invention is not limited to this. In more detail, as shown in FIG. 1 , when the light beam is transmitted to the light homogenization element LH through the illumination system LS, the light homogenization element LH can homogenize the excitation beam 50 and the wavelength conversion beam 60Y, and transmit the illumination beam 70 to Light valve 210 .

Next, as shown in FIG. 1 , the light valve 210 is located on the transmission path of the illumination beam 70 and is adapted to convert the illumination beam 70 into the image beam 80 . The projection lens 220 is located on the transmission path of the image beam 80 and is suitable for projecting the image beam 80 onto a screen or a wall (not shown) to form an image frame. After the illumination beam 70 converges on the light valve 210, the light valve 210 sequentially converts the illumination beam 70 into an image beam 80 and transmits it to the projection lens 220. Therefore, the image beam 80 converted by the light valve 210 is projected. screen.

In this way, in the present embodiment, the projection device 200 and the light source module 100 can be configured by the dislocation arrangement of the first laser light source unit 111 and the second laser light source unit 112, so that the first laser light source unit 111 and the second laser light source unit 111 and the second laser light source unit 112 The laser light source unit 112 can be arranged on the same plane, and has its own independent heat dissipation module TM1, heat dissipation module TM2 and its heat pipe HP, so as to realize the small size of the projection device 200 and the lighting system LS and a simple optical path design, and At the same time take into account the cooling efficiency. In addition, the projection device 200 and the light source module 100 make the first laser beam 50L1 , the second laser beam 50L2 , the third laser beam 50L3 and the fourth laser beam 50L1 by the arrangement of the first light combining unit 120 and the second light combining unit 130 . The 50L4 can be uniformly incident on each area of the light-incident surface of the focusing lens 140 , thereby improving the light-receiving efficiency, thereby enabling the illumination beam 70 to have good color performance.

It is worth noting that, in the embodiment of FIG. 3D , although the first light combining unit 120 and the second light combining unit 130 surround the first reflection area RR1 with the first outer frame 121 and the second reflection area with the second outer frame 132 RR2 is an example, but the present invention is not limited thereto. In other embodiments, the first outer frame 121 can also surround the first reflective region RR1 and the first transmissive region TR1, and the second outer frame 132 can also surround the second reflective region RR2 and the first transmissive region TR1. After referring to the present invention, any person of ordinary skill in the art can make appropriate changes to its structure to achieve similar effects and advantages as the aforementioned projection device 200, but it should still fall within the scope of the present invention. Some examples will be given below for illustration.

4A to 4B are schematic structural diagrams of a first light combining unit and a second light combining unit according to another embodiment of the present invention. 5A to 5B are schematic structural diagrams of a first light combining unit and a second light combining unit according to still another embodiment of the present invention. In this embodiment, as shown in FIGS. 4A and 5A , the first light combining units 420 and 520 are similar to the first light combining unit 120 . As shown in FIGS. 4B and 5B , the second light combining units 430 and 530 are similar to the first light combining unit 120 . The second light combining unit 130 is similar, and the differences are as follows. As shown in FIG. 4A and FIG. 5A , the first light combining units 420 and 520 further include first outer frames 421 and 521 . The first outer frames 421 and 521 surround the first transmissive area TR1 and the first reflective area RR1 and are combined together. The first light combining region CR1, and, as shown in FIG. 4B and FIG. 5B , the second outer frames 432 and 532 surround the second light combining region CR2 formed by the combination of the second transmission region TR2 and the second reflection region RR2.

On the other hand, as shown in FIG. 4A and FIG. 4B , the first transmissive region TR1 of the first light combining unit 420 and the second transmissive region TR2 of the second light combining unit 430 are formed by a light-transmitting substrate, and are respectively connected with the first transmissive substrate. The outer frame 421 is connected to the second outer frame 432 . Alternatively, as shown in FIGS. 5A and 5B , the first transmission region TR1 of the first light combining unit 520 and the second transmission region TR2 of the second light combining unit 530 may not have any optical elements, that is, the An outer frame 521 and a second outer frame 532 can respectively form the first transmission region TR1 of the first light combining unit 520 and the second transmission region TR2 of the second light combining unit 530 by forming a hollow structure.

In this way, when the first light combining units 420, 520 and the second light combining units 430, 530 are applied to the aforementioned light source module 100 and the projection device 200, the first light combining units 420, 520 and the second light combining units 430, 530 The above-mentioned adjustment of the first light combining units 420 and 520 and the second light combining units 430 and 530 relative to each laser light source unit LU can also be achieved by configuring the first outer frames 421 and 521 and the second outer frames 432 and 532 respectively. It can achieve similar effects and advantages as the aforementioned first light combining unit 120 and second light combining unit 130, which will not be repeated here. Moreover, when the first light combining units 420, 520 and the second light combining units 430, 530 are applied to the aforementioned light source module 100 and the projection device 200, the light source module 100 and the projection device 200 can also achieve similar effects and advantages. I won't go into details here.

On the other hand, in the foregoing embodiment, although the projection device 200 is exemplified by having the wavelength conversion module PM and the filter module FM, the present invention is not limited thereto. In other embodiments, when the light source module 100 of this embodiment includes a red laser diode, a green laser diode, and a blue laser diode at the same time, the projection device 200 can also omit the wavelength conversion module PM and the filter module FM, and use The light source module 100 uses the laser beam 50 formed by combining the first laser beam 50L1, the second laser beam 50L2, the third laser beam 50L3 and the fourth laser beam 50L4 as the illumination beam 70, and transmits it to the subsequent optical elements . After referring to the present invention, any person of ordinary skill in the art can make appropriate changes to its structure to achieve similar effects and advantages as the aforementioned projection device 200, but it should still fall within the scope of the present invention.

To sum up, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the projection device and the light source module can be configured by the dislocation arrangement of the first laser light source unit and the second laser light source unit, so that the first laser light source unit and the second laser light source unit can be arranged On the same plane, and have their own independent heat dissipation modules and heat pipes, so as to realize the small size of the projection device and the lighting system and the simple optical path design, and at the same time take into account the heat dissipation efficiency. In addition, the projection device and the light source module make the first laser beam, the second laser beam, the third laser beam and the fourth laser beam uniformly incident to the focusing unit through the arrangement of the first light combining unit and the second light combining unit. On each area of the light incident surface of the optical lens, the light collection efficiency is improved, and the illumination beam can have good color performance.

The above are only preferred embodiments of the present utility model, and should not limit the scope of the present utility model implementation, that is, simple equivalent changes and modifications made according to the claims and descriptions of the present utility model application , are still within the scope of the utility model patent. In addition, any embodiment of the present invention or the solution of the claims does not need to achieve all the objects, advantages or features disclosed in the present invention. In addition, the abstract part and the name of the utility model are only used to assist the retrieval of patent documents, not to limit the scope of rights of the present utility model. In addition, terms such as "first" and "second" mentioned in this specification or the claims are only used to name the elements or to distinguish different embodiments or ranges, but are not used to limit the number of elements. upper or lower limit.

Description of reference numerals

50: Laser Beam

50L1: First laser beam

50L2: Second laser beam

50L3: Third laser beam

50L4: Fourth laser beam

60Y: wavelength converted beam

60R: Auxiliary beam

70: Lighting Beam

80: Image Beam

100: Light source module

110. LU: Laser light source unit

111: The first laser light source unit

111F: The first fixed part

112: Second laser light source unit

112F: Second fixed part

113: Third laser light source unit

114: Fourth laser light source unit

120, 420, 520: the first light combining unit

121, 421, 521: the first frame

130, 430, 530: the second light combining unit

132, 432, 532: Second frame

140: Focusing Lens

200: Projection device

210: Light valve

220: Projection Lens

CR1: The first light combining area

CR2: The second light combining area

d1, d2: minimum distance

D1: first direction

D2: second direction

D3: third direction

DA: Arrangement direction

DE: extension direction

FM: filter module

HP: Heat Pipe

LE: Light-emitting element

LS: Lighting System

LH: Light Homogenization Element

PM: wavelength conversion module

O: origin

P: plane

PN: pin

TM1, TM2: cooling module

RO: Overlap Region

RR1: first reflection zone

RR2: Second reflection zone

RS1: first side area

RS2: Second side area

TR1: first transmission area

TR2: the second transmission region.

Claims (22)

1. A light source module for providing a laser beam, the light source module comprising:

the laser light source units comprise a first laser light source unit and a second laser light source unit which are respectively used for providing a first laser beam and a second laser beam; and

the focusing lens is positioned on a transmission path of the first laser beam and the second laser beam, wherein the first laser beam and the second laser beam are respectively incident on the focusing lens along a first direction, the first laser light source unit and the second laser light source unit are arranged along a second direction, when the focusing lens is viewed along a third direction, the first laser light source unit and the second laser light source unit are not overlapped, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The light source module according to claim 1, wherein a range of a shortest distance between the first laser light source unit and the second laser light source unit in the second direction is 2 mm or less.

3. The light source module according to claim 1, wherein the first laser light source unit includes a first side region, the second laser light source unit includes a second side region, and the first side region overlaps the second side region when viewed in the second direction.

4. The light source module according to claim 3, wherein the first laser light source unit includes a first fixing portion located in the first side region, and the second laser light source unit includes a second fixing portion located in the second side region.

5. The light source module of claim 4, wherein a shortest distance between the first fixing portion and the second fixing portion in the third direction is less than or equal to 8 mm when viewed along the second direction.

6. The light source module of claim 3, wherein the first laser light source unit and the second laser light source unit are located on the same plane, the first direction is perpendicular to the plane, and the second direction and the third direction are parallel to the plane.

7. The light source module of claim 1, wherein the plurality of laser light source units further includes a third laser light source unit and a fourth laser light source unit, the third laser light source unit faces one side of the second direction, the fourth laser light source unit faces the other side of the second direction, and the third laser light source unit and the fourth laser light source unit are respectively configured to provide a third laser beam and a fourth laser beam.

8. The light source module of claim 7, further comprising:

the first light combination unit is arranged corresponding to the first laser light source unit and the fourth laser light source unit, the first light combination unit is provided with a first reflection area, the first reflection area is positioned on a transmission path of the fourth laser beam, and the fourth laser beam is transmitted to the focusing lens through the first reflection area; and

and the second light combining unit is arranged corresponding to the second laser light source unit and the third laser light source unit, and is provided with a second reflection area, the second reflection area is positioned on a transmission path of the third laser beam, and the third laser beam is transmitted to the focusing lens through the second reflection area.

9. The light source module of claim 8, wherein the first light combining unit further has a first transmission region located on a transmission path of the first laser beam, the second light combining unit further has a second transmission region located on a transmission path of the second laser beam, and the first laser beam and the second laser beam respectively penetrate through the first transmission region and the second transmission region and are transmitted to the focusing lens.

10. The light source module of claim 9, wherein the first light combining unit further includes a first outer frame surrounding a first light combining area formed by combining the first transmissive area and the first reflective area, and the second light combining unit further includes a second outer frame surrounding a second light combining area formed by combining the second transmissive area and the second reflective area.

11. The light source module of claim 9, wherein the first, second, third and fourth laser beams are incident on first, second, third and fourth regions of the light incident surface of the focusing lens, respectively, and projection positions of the first, second, third and fourth regions on a rectangular coordinate plane with a center of the focusing lens as an origin are located in first, second, third and fourth quadrants of the rectangular coordinate plane, respectively.

12. A projection device, comprising: an illumination system adapted to provide an illumination beam, wherein the projection device further comprises:

a light source module for providing a laser beam to form the illumination beam, comprising:

the laser light source units comprise a first laser light source unit and a second laser light source unit which are respectively used for providing a first laser beam and a second laser beam; and

a focusing lens located on a transmission path of the first laser beam and the second laser beam, wherein the first laser light source unit and the second laser light source unit face the focusing lens, the first laser beam and the second laser beam are respectively incident on the focusing lens from the first laser light source unit and the second laser light source unit along a first direction, the first laser light source unit and the second laser light source unit are arranged along a second direction, when viewed along a third direction, the first laser light source unit and the second laser light source unit are not overlapped, and the first direction, the second direction and the third direction are perpendicular to each other;

the light valve is arranged on the transmission path of the illumination light beam and used for converting the illumination light beam into an image light beam; and

and the projection lens is arranged on the transmission path of the image light beam and is used for projecting the image light beam out of the projection device.

13. The projection apparatus according to claim 12, wherein a range of a shortest distance between the first laser light source unit and the second laser light source unit in the second direction is 2 mm or less.

14. The projection apparatus according to claim 12, wherein the first laser light source unit includes a first side region, the second laser light source unit includes a second side region, and the first side region overlaps the second side region when viewed in the second direction.

15. The projection apparatus according to claim 14, wherein the first laser light source unit includes a first fixing portion located in the first side region, and the second laser light source unit includes a second fixing portion located in the second side region.

16. The projection apparatus according to claim 15, wherein a shortest distance between the first fixing portion and the second fixing portion in the third direction when viewed in the second direction is less than or equal to 8 mm.

17. The projection apparatus according to claim 14, wherein the first laser light source unit and the second laser light source unit are located on the same plane, the first direction is perpendicular to the plane, and the second direction and the third direction are parallel to the plane.

18. The projection apparatus according to claim 12, wherein the plurality of laser light source units further includes a third laser light source unit and a fourth laser light source unit, the third laser light source unit faces one side of the second direction, the fourth laser light source unit faces the other side of the second direction, and the third laser light source unit and the fourth laser light source unit are configured to provide a third laser beam and a fourth laser beam, respectively.

19. The projection device of claim 18, further comprising:

the first light combination unit is arranged corresponding to the first laser light source unit and the fourth laser light source unit, the first light combination unit is provided with a first reflection area, the first reflection area is positioned on a transmission path of the fourth laser beam, and the fourth laser beam is transmitted to the focusing lens through the first reflection area; and

and the second light combining unit is arranged corresponding to the second laser light source unit and the third laser light source unit, and is provided with a second reflection area, the second reflection area is positioned on a transmission path of the third laser beam, and the third laser beam is transmitted to the focusing lens through the second reflection area.

20. The projection apparatus according to claim 19, wherein the first light combining unit further has a first transmission region located on a transmission path of the first laser beam, the second light combining unit further has a second transmission region located on a transmission path of the second laser beam, and the first laser beam and the second laser beam respectively penetrate through the first transmission region and the second transmission region and are transmitted to the focusing lens.

21. The projection apparatus as claimed in claim 20, wherein the first light combining unit further includes a first outer frame surrounding a first light combining area formed by combining the first transmissive area and the first reflective area, and the second light combining unit further includes a second outer frame surrounding a second light combining area formed by combining the second transmissive area and the second reflective area.

22. The projection apparatus according to claim 18, wherein the first, second, third and fourth laser beams are incident on first, second, third and fourth regions of the light incident surface of the focusing lens, respectively, and projection positions of the first, second, third and fourth regions on a rectangular coordinate plane with a center of the focusing lens as an origin are located in first, second, third and fourth quadrants of the rectangular coordinate plane, respectively.

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