CN101210988A - Lens module and camera module - Google Patents

Abstract

The invention provides a lens module, which includes a lens seat and a carrier plate. The lens holder has a light entrance, the carrier plate is arranged in the lens seat and has a plurality of lenses with different curvatures that are integrally formed along a ring, and the carrier plate can rotate along a rotating shaft to make the multiple lenses The two lenses are respectively aligned with the light entrance of the lens mount. The lens module realizes the zoom operation of the lens module by rotating the carrier plate. The lens module does not need to change the thickness of the lens module along the optical axis during the zooming process, thereby facilitating the thinning of the lens module. In addition, the invention also provides a camera module using the lens module.

Description

Lens module and camera module

technical field

The invention relates to the field of photography, in particular to a lens module and a camera module using the lens module.

Background technique

With the development of camera technology, camera modules are widely used in camera devices for various purposes. The combination of camera modules and various portable electronic devices such as mobile phones, video cameras, computers, etc. is favored by many consumers. .

The technology of mobile phone camera modules is getting more and more developed. At present, models with auto focus and 5 megapixels have come out. In many applications, a zoomable mobile phone camera module is also required, but it is very difficult to achieve optical zoom in the small space of a mobile phone. Although some two-stage zoom lenses are currently used in mobile phone camera modules, they generally require precise cam structures and complex assembly, which is not conducive to mass production, especially in these zoom mobile phone camera modules. The barrel moves along the direction of the optical axis, resulting in a large thickness of the camera module of this type of mobile phone along the direction of the optical axis, which cannot meet the requirements of thin, light and small mobile phones.

Contents of the invention

In view of this, it is necessary to provide a lens module with a simple structure and a small thickness along the optical axis and a camera module using the lens module.

A lens module includes a lens seat and a carrier plate. The lens mount has a light entrance. The carrier plate is arranged in the lens holder and has a plurality of lenses with different curvatures distributed along the ring in one piece. The carrier plate can rotate along a rotating shaft so that the plurality of lenses are respectively connected to the light entrance of the lens holder. alignment.

A camera module, which includes a lens seat, a carrier plate and an image sensor arranged in the lens seat. The lens holder has a light entrance to align with the image sensor, the carrier plate is arranged in the lens seat and has a plurality of lenses with different curvatures that are integrally formed along the ring, and the carrier plate can Rotate along a rotating shaft so that the plurality of lenses are respectively aligned with the light entrance of the lens holder.

The lens module includes a tray with a plurality of lenses with different curvatures, the effective focal length of the lens module can be changed by rotating the tray, so as to realize the zoom operation of the lens module. The lens module does not need to change the thickness of the lens module along the optical axis during the zooming process, thereby facilitating the thinning of the lens module. Moreover, the carrier plate is formed by integral molding, so that the relative positions of the lenses on the carrier plate can be very precise, and it does not need to be formed by assembly, which can avoid cumbersome assembly processes.

Description of drawings

FIG. 1 is a partially exploded view of a camera module provided by an embodiment of the present invention.

FIG. 2 is a schematic diagram of the assembled camera module in FIG. 1 .

FIG. 3 is a cross-sectional view of the camera module in FIG. 2 along the direction III-III.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 to FIG. 3 , a camera module 100 provided by an embodiment of the present invention includes a lens module 10 and an image sensor 20 . The lens module 10 includes a lens holder 11 , a carrier plate 12 and a fixed lens 13 .

The image sensor 20 can be a charge coupled device or a complementary metal oxide semiconductor. Preferably, the image sensor 20 adopts a ceramic leaded chip carrier package (Ceramic Leaded Chip Carrier, CLCC), a plastic leaded chip carrier package (Plastic Leaded Chip Carrier, PLCC) or a chip scale package (Chip Scale Package, CSP).

In this embodiment, the lens mount 11 includes a cover 111 and a base 112 that are engaged with each other. The top of the cover 111 has a light entrance 1111, the image sensor 20 is arranged in the base 112, and the image sensor 20 is aligned with the light entrance 1111, the light entrance 1111 Between the image sensor 20 and the image sensor 20 is a hollow channel 113 . The cover 111 and the base 112 form an accommodating cavity 114 at the fastening position, and the accommodating cavity 114 has an opening 1141 .

The tray 12 is disposed in the accommodating cavity 114 and partially exposed through the opening 1141 . In this embodiment, the carrier plate 12 has four lenses 121, 122, 123 and 124 with different curvatures distributed along the ring, and the carrier plate 12 and the lenses 121, 122, 123 and 124 are formed by an integral molding method. The carrier plate 12 can rotate along a rotating shaft 125, so that the lenses 121, 122, 123 and 124 can be respectively screwed into the hollow channel 113 to correspond to the light entrance 1111 of the lens holder and the image sensor 20. allow. It can be understood that the number of lenses on the carrier plate 12 is not limited to four, and it can also be two, three, five, six and so on. The tray 12 is formed by integral molding, so that the relative positions of the lenses 121 , 122 , 123 and 124 on the tray 12 can be very precise. Moreover, when the carrier plate 12 is formed by an integral molding method, it does not need to be formed by assembly, which can avoid complicated assembly processes. The carrier plate 12 and the lenses 121, 122, 123 and 124 thereon are all made of plastic materials. In addition, in order to overcome the position error of the lenses 121 , 122 , 123 and 124 on the carrier plate 12 when rotating, preferably, the carrier plate 12 and the rotating shaft 125 are integrally formed by integral molding.

The lens module 10 can drive the carrier plate 12 to rotate by driving the rotating shaft 125 to rotate, and can also drive the carrier plate 12 to rotate by applying force on the edge of the carrier plate 12 . In this embodiment, the edge of the carrier plate 12 has a toothed structure 126 , and at the opening 1141 of the accommodating cavity 114 , the carrier plate 12 can be driven to rotate through the cooperation of the toothed structure 126 and a driving mechanism such as a gear. Of course, the carrier plate 12 can also be manually rotated to perform a manual focusing operation.

In order to prevent the large-area light transmission of the carrier plate 12 from causing the lens module 10 to produce flashes or ghost images, preferably, all surfaces of the carrier plate 12 except the areas where the lenses 121, 122, 123 and 124 are located Cover with a light-tight aperture gasket. Of course, the same effect can also be achieved by painting or dyeing the surface of the carrier plate 12 black except for the areas where the lenses 121 , 122 , 123 and 124 are located. In order to facilitate the rotation of the carrier plate 12, the lenses 121, 122, 123 or 124 on it can be accurately aligned with the light entrance 1111. In this embodiment, the carrier plate 12 is provided with a plurality of positioning holes 127. The cover 111 and the base 112 are respectively provided with a positioning pin 1112 and 1121 for matching with the positioning hole 127 . Preferably, the number of positioning holes 127 is the same as or corresponds to the number of lenses on the tray 12 , and the positioning pins 1112 and 1121 are controlled to expand and contract in a direction perpendicular to the tray 12 by springs. When one of the lenses 121 , 122 , 123 and 124 on the carrier plate 12 is turned into the hollow channel 113 and aligned with the light entrance 1111 , the positioning pins 1112 and 1121 will be inserted into the positioning holes 127 .

The fixed lens 13 is disposed in the hollow channel 113 , and its optical axis is aligned with the light entrance 1111 . Since the lens module 10 can image with only one lens, the fixed lens 13 is not a necessary component of the lens module 10 , and the lens module 10 may also have multiple fixed lenses 13 .

The lens module includes a tray with a plurality of lenses with different curvatures, the effective focal length of the lens module can be changed by rotating the tray, so as to realize the zoom operation of the lens module. The lens module does not need to change the thickness of the lens module along the optical axis during the zooming process, thereby facilitating the thinning of the lens module. In addition, the carrier plate is formed by integral molding, so that the relative positions of the lenses on the carrier plate can be very precise, and it does not need to be formed by assembly, which can avoid tedious assembly process.

It can be understood that those skilled in the art can make other corresponding changes and deformations according to the technical concept of the present invention, and all these changes and deformations should belong to the protection scope of the claims of the present invention.

Claims (10)

1. camera lens module, it comprises a lens mount and a load plate, this lens mount has a light inlet, described load plate is located in the lens mount and it has the eyeglass of integrated a plurality of different curvature along annular spread, and described load plate can rotate so that described a plurality of eyeglass is aimed at the light inlet of lens mount respectively along a rotating shaft.

2. camera lens module as claimed in claim 1 is characterized in that, described lens mount comprises a lid and a base, and described lid and base fasten and form a containing cavity, and described load plate is located in the described containing cavity.

3. camera lens module as claimed in claim 2 is characterized in that described rotating shaft is located on the described base.

4. camera lens module as claimed in claim 1 is characterized in that described load plate and rotating shaft are structure as a whole.

5. camera lens module as claimed in claim 1 is characterized in that, described load plate is all blackings or dye black of other surface except that described a plurality of eyeglasses region.

6. camera lens module as claimed in claim 1 is characterized in that, described load plate is except that the eyeglass region, and other surface all covers the light tight aperture pad of one deck.

7. camera lens module as claimed in claim 1 is characterized in that, described load plate edge has dentalation.

8. camera lens module as claimed in claim 1 is characterized in that, has a plurality of pilot holes on the described load plate, is provided with at least one register pin in the described lens mount, by allowing described register pin and cooperating of pilot hole on the load plate each eyeglass aim at light inlet.

9. camera lens module as claimed in claim 1 is characterized in that, described camera lens module comprises that also at least one fixing len aims at described light inlet.

10. camera module, it comprises a lens mount, a load plate and is located at the interior image sensor of described lens mount, described lens mount has a light inlet and aims at described image sensor, described load plate is located in the lens mount and it has the eyeglass of integrated a plurality of different curvature along annular spread, and described load plate can rotate so that described a plurality of eyeglass is aimed at the light inlet of lens mount respectively along a rotating shaft.

Images