TW201408930A - Extensible/retractable lens - Google Patents

Abstract

The present invention discloses an extendible/retractable lens, which comprises a main body and a cover. The main body is of a cup shape that is wide at top and narrow at bottom; the top is provided with a light exit surface, and the bottom is provided with a light incident surface. The light exit surface is recessed at the center thereof to form an insertion slot. The light incident surface is recessed at the center thereof to form a receiving space for receiving therein a light-emitting diode. The cover is of a circular disk structure having a bottom surface arranged correspondingly to the light exit surface and raised at a center thereof to form an insertion section for being inserted into the insertion slot to extend/contract the distance between the cover and the main body so as to adjust the intensity and illumination range of the light projected from the light-emitting diode. As such, the light illumination effect projected from the light-emitting diode can be adjusted to fit to various lamps.

Description

Telescopic lens

The invention relates to the technical field of optical lenses, in particular to a telescopic lens, which can change and adjust the illumination angle and the projection illumination of the original light-emitting diode by three optical principles, and is suitable for different requirements of various lamps.

In recent years, Light Emitting Diodes (LEDs) have been widely used in various types of lamps due to their low power consumption, high efficiency, and long life. However, the original illumination angle of the LED is generally only about 120° and the illumination range is limited, and the light source emitted by the LED is concentrated at the center, so that the brightness difference between the center and the periphery is very large and cannot provide a uniform illumination effect. In this way, various types of LED lamps using LEDs as light sources will be limited by the small illumination angle of the original LED light source and the narrow distribution of light, and the illumination effect of a small illumination range and poor light uniformity is difficult to meet the user. demand. In view of this, the LED lamp is often provided with an optical lens to reflect or refract the light emitted by the original LED light source by using the secondary optical principle of the optical lens, so as to adjust and improve the uniform illumination, the illumination angle and the optical path distribution of the original LED light source. After the degree, various light-appearance layouts with better applicability are provided to provide optimal illumination conditions under various usage conditions.

Moreover, due to the trend of miniaturization of the device, or in order to meet the market demand of high average light, high illumination and high illumination range, a single LED lamp may be equipped with multiple LEDs, and each LED is equipped with an optical lens, which is associated with Optical lens structure design and appearance volume are limited, affecting optics The secondary optical effect produced by the lens prevents the LFD luminaire from providing optimal illumination. In this regard, how to further enhance the optical path adjustment function of the optical lens by using the principle of refraction and reflection of the three opticals is a problem that the practitioners in the field are eager to improve.

In view of the problems of the prior art, the object of the present invention is to provide a telescopic lens which simultaneously adjusts the illumination angle and projection illuminance of the original light-emitting diode by using the principles of refraction and reflection of the second and third opticals to improve the illumination quality. Increase adaptability.

According to the purpose of the present invention, the telescopic lens has a body having a cup-shaped structure that is wide and narrow, and has a light-emitting surface at the top, a light-incident surface at the bottom, and a concave portion at the center of the light-incident surface. The accommodating space is configured to accommodate a light-emitting diode and elastically adjust the illumination effect projected by the light-emitting diode, wherein the telescopic lens has a cover body and the center of the light-emitting surface of the body The recess is formed into a slot; the cover is a disc-shaped structure, the bottom surface of the cover is disposed corresponding to the light-emitting surface, and a central portion is convexly formed to form an insert portion for being embedded in the slot to extend and contract the cover The distance from the body is such that the illumination intensity and illumination range projected by the LED are adjusted.

In other words, in accordance with the purpose of the present invention, the telescopic lens has a body that is a cup-shaped structure that is wide and narrow, and has a light-emitting surface at the top, a light-incident surface at the bottom, and a concave portion at the center of the light-incident surface. Forming an accommodating space for accommodating a light-emitting diode and elastically adjusting the illumination effect projected by the light-emitting diode, wherein the telescopic lens has a light path adjusting means for the body And covering the light-emitting surface, and shortening the distance between the light-path adjusting means and the light-emitting surface The light intensity projected by the light-emitting diode is enhanced; and the distance between the light path adjusting means and the light-emitting surface is extended to increase the illumination range projected by the light-emitting diode. Thus, after the light emitted by the light-emitting diode is deflected by the secondary optical refraction or reflection of the body, the three optical effects formed by the cover body further change the optical path direction, thereby improving the illumination quality.

Wherein, the center of the light-incident surface is concavely converged toward the light-emitting surface by a convex arc curve, and the accommodating space of the conical space structure is formed, and the tapered side of the accommodating space is concavely curved, and The slot is a square columnar space structure, and the insert portion is arranged in a corresponding square column shape. The light-emitting surface and the bottom surface of the cover body are honeycomb surfaces corresponding to each other, and the top surface of the cover body is treated by a matte surface to appropriately adjust the optical path to form an optimal illumination distribution.

Moreover, the telescopic lens further includes an engaging body, and the engaging system is disposed on one side of the main body to be engaged and fixed with respect to an LED substrate, so as to facilitate assembly of the lamp.

In summary, the present invention adjusts the distance between the light emitting surface of the body and the lower surface of the cover by telescopically flexing the cover to elastically adjust the light emitted by the light emitting diode to secondary optics and tertiary optics. The degree of offset generated between the projections forms a lighting effect suitable for each field.

In order for your review board to have a clear understanding of the contents of the present invention, please refer to the following description for matching drawings.

Please refer to FIGS. 1 and 2, which are respectively a top view and a bottom view of a preferred embodiment of the present invention. As shown in the figure, the telescopic lens 1 can elastically adjust the illumination illuminance of the light source and the projection range of the light source to conform to the respective collars. The field has different requirements for lighting quality and is applicable to various types of lamps, and has a body 10 and a light path adjusting means. The body 10 is a cup-shaped structure with an upper width and a lower width, and a light-emitting surface 100 is disposed at the top, and a light-incident surface 101 is disposed at the bottom portion. The center of the light-emitting surface 100 is recessed to form a slot 1000, and the center of the light-incident surface 101 The recessed portion forms an accommodating space for accommodating a light-emitting diode (not shown). The optical path adjusting means is disposed on the light-emitting surface 100 in combination with the main body 10, and the distance between the optical path adjusting means and the light-emitting surface 100 is shortened to make the light intensity projected by the light-emitting diode Enhanced. At the same time, by extending the distance between the optical path adjusting means and the light-emitting surface 100, the illumination range projected by the light-emitting diode is widened.

Moreover, the optical path adjusting means is a cover body 11 of a disc-shaped structure, and a bottom surface thereof is disposed corresponding to the light-emitting surface 100, and a center portion is convexly formed to form an insertion portion 110 for being embedded in the slot. The distance between the cover 11 and the body 10 is elastically stretched, and the illumination intensity and the illumination range are elastically adjusted by changing the effect of the three-dimensional optical refraction and reflection on the light projected by the LED.

3 to 6 are respectively a schematic view of the main body, a cross-sectional view of the body, a schematic view of the cover, and a cross-sectional view of the cover according to an embodiment of the preferred embodiment of the present invention. As shown in the figure, the slot 1000 of the body 10 has a square columnar space structure. Therefore, the inserting portion 110 is disposed in a square column shape, and the slot 1000 and the inserting portion 110 are opposite to each other. At least one fixing member (not shown) is disposed to engage and fix the insert portion 110 in the slot 1000.

In order to improve the effect of the body 10 on the optical path distribution of the light-emitting diode by the secondary optical principle, a convex arc is formed at the center of the light-incident surface 101. The line is recessed and converged toward the light-emitting surface 100 to form the accommodating space of the conical space structure, and the tapered side of the accommodating space is concavely curved to further uniformly scatter the light emitted by the illuminating diode. .

Furthermore, the top surface of the cover 11 can be treated with a matte surface, and the light-emitting surface 100 and the bottom surface of the cover 11 are mutually corresponding honeycomb surface structures, so as to appropriately adjust the optical path to form an optimal illumination distribution. As shown in FIG. 7 , FIG. 8 and FIG. 1 , which are respectively a light trace diagram, a light distribution curve diagram and an irradiation diagram according to an embodiment of the preferred embodiment of the present invention, when the cover body 11 is compressed to engage the body 10. Even if the bottom surface of the light-emitting surface 100 is bonded to the light-emitting surface 100, the light projected by the light-emitting diode through the telescopic lens 1 will have an illumination effect of a uniform illumination intensity of about 1 and a concentrated illumination range toward the center. On the contrary, when the cover 11 is stretched away from the body 10, even if the bottom surface thereof is covered on the light-emitting surface 100 by a distance, as shown in FIG. 9, 10 and FIG. A light trace diagram, a light distribution graph, and an irradiation diagram of an embodiment of the preferred embodiment, wherein the light emitted by the light-emitting diode through the telescopic lens 1 diffuses the illumination range to the surrounding area to normalize the light intensity. Still about 1 lighting effect. It can be seen that the greater the distance between the body 10 and the cover 11, the greater the illumination range of the illumination of the LED, but the relative illumination intensity is relatively weakened.

Incidentally, the telescopic lens 1 further includes an engaging body 12, and the engaging body 12 is disposed on one side of the body 10 so as to be engaged with and fixed to an LED substrate (not shown). Fixture assembly.

The above description is only illustrative of preferred embodiments and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧ Telescopic lens

10‧‧‧ Ontology

100‧‧‧Glossy

1000‧‧‧ slots

101‧‧‧Into the glossy surface

11‧‧‧ Cover

110‧‧‧Insert

12‧‧‧Card

Figure 1 is a top plan view of a preferred embodiment of the present invention.

Figure 2 is a bottom plan view of a preferred embodiment of the present invention.

Figure 3 is a schematic diagram of the body of an embodiment of the preferred embodiment of the present invention.

Figure 4 is a cross-sectional view of the body in accordance with an embodiment of the preferred embodiment of the present invention.

Figure 5 is a schematic view of a cover body in accordance with an embodiment of the preferred embodiment of the present invention.

Figure 6 is a cross-sectional view of a cover body in accordance with an embodiment of the preferred embodiment of the present invention.

Figure 7 is a light trace diagram of an embodiment of the preferred embodiment of the present invention.

Figure 8 is a light distribution graph of an embodiment of the preferred embodiment of the present invention.

Figure 9 is a light trace diagram of a second embodiment of the preferred embodiment of the present invention.

Figure 10 is a light distribution graph of a second embodiment of the preferred embodiment of the present invention.

1‧‧‧ Telescopic lens

10‧‧‧ Ontology

100‧‧‧Glossy

11‧‧‧ Cover

110‧‧‧Insert

Claims (7)

A telescopic lens has a body, which is a cup-shaped structure with an upper width and a lower width, and has a light-emitting surface at the top, a light-incident surface at the bottom, and a recessed space at the center of the light-incident surface to form an accommodating space for The light-emitting diode is disposed to elastically adjust the illumination effect of the light-emitting diode, wherein the telescopic lens has a cover body, and the center of the light-emitting surface of the body is concavely formed to form a plug. The cover body is a disc-shaped structure, and a bottom surface thereof is disposed corresponding to the light-emitting surface, and a center portion is convexly formed to form an insertion portion for being embedded in the slot to extend and contract the distance between the cover body and the body The light intensity and illumination range projected by the light-emitting diode are adjusted. The telescopic lens according to claim 1, wherein the light-emitting surface and the bottom surface of the cover are mutually corresponding honeycomb surface structures. The telescopic lens of claim 1, wherein the top surface of the cover is matte treated. The telescopic lens of claim 1, wherein the center of the light incident surface is concavely converged toward the light exiting surface by a convex arc curve to form the accommodating space of the conical space structure, and the capacity is The tapered side of the space is concavely curved. The telescopic lens of claim 1, wherein the slot is a square columnar space structure, and the insert portion is disposed in a corresponding square column shape. The telescopic lens of claim 1, further comprising a snap body, the latching system being disposed on a side of the body for relative to An LED substrate is clamped and fixed to each other. A telescopic lens has a body, which is a cup-shaped structure with an upper width and a lower width, and has a light-emitting surface at the top, a light-incident surface at the bottom, and a recessed space at the center of the light-incident surface to form an accommodating space for The light-emitting diode is disposed to elastically adjust the illumination effect projected by the light-emitting diode, wherein the telescopic lens has a light-path adjusting means for covering the body and covering the light-emitting diode And increasing the distance between the light path adjusting means and the light exiting surface to increase the light intensity projected by the light emitting diode; and extending the distance between the light path adjusting means and the light emitting surface to make the light emitting The range of illumination projected by the polar body is widened.