WO2019085258A1

WO2019085258A1 - Optical assembly and optical device

Info

Publication number: WO2019085258A1
Application number: PCT/CN2018/071432
Authority: WO
Inventors: 徐应荣; 侯海雄; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2017-11-01
Filing date: 2018-01-04
Publication date: 2019-05-09
Also published as: CN109752816B; CN109752816A

Abstract

An optical assembly (100), comprising an optical element (1) and a fixing assembly (2) for fixing the optical element (1). The fixing assembly (2) comprises a supporting member (21) and a light blocking plate (22); an elastic member (23) that abuts against and fixes the optical element (1) is provided on the side of the light blocking plate (22) close to the optical element (1). Fixing a prism by using the supporting force of the supporting member (21) and the elastic force of the elastic member (23) can reduce processing difficulty; in addition, the light blocking plate (22) blocks light to protect the elastic member (23) from function loss due to oxidation, thereby improving product reliability.

Description

Instruction Manual Title: Optical Components and Optical Devices Technical Field

[0001] The present invention relates to the field of optical technologies, and in particular, to an optical component and an optical device.

Background technique

[0002] Prisms are often used in optical design, but the surfaces of the prisms are all optical surfaces, especially for optical surfaces that require light or reflective optical surfaces on the outer surface. Objects that are in contact with the optical surface of the prism will destroy their optical properties. Affect overall efficiency or reliability. The general design is to use a lot of glue to bond or a single elastic piece to press.

technical problem

[0003] However, the effect is not satisfactory. The use of a large amount of glue bonding destroys the optical surface of the prism and affects its optical efficiency. With a single elastic member, the elastic force is difficult to control and the elastic member has a long period of light and high temperature environment, which causes the elastic failure to affect its reliability.

[0004] Therefore, it is necessary to provide a new optical component and optical device to solve the above problems. Technical solution

The technical problem to be solved by the present invention is to provide an optical component and an optical device to solve the problem that the optical component in the prior art may damage its optical performance in the fixing process, affecting the overall efficiency or reliability, and affecting the use effect.

In order to solve the above technical problem, one technical solution adopted by the present invention is to provide an optical component including an optical component and a fixing component for fixing the optical component, the fixing component including a support for supporting the optical component a light-shielding member of the component, a light-blocking plate fixed on the carrier and forming a fixed space of the optical component between the carrier, and a light-retaining member disposed on a side of the light-blocking plate adjacent to the optical component, the optical The component is fixed in the fixed space and abuts against the elastic member.

[0007] Preferably, the carrier includes a supporting portion for supporting the optical element, and a fixing portion for extending the light blocking plate protruding from the supporting portion, the light blocking plate and the supporting portion The fixed space is formed between them. [0008] Preferably, the upper surface of the support portion is provided with a positioning surface protruding toward the optical element, and the optical element is fixed and adhered to the positioning surface.

[0009] Preferably, the optical element and the positioning surface are bonded by a low refractive index glue.

[0010] Preferably, one end of the light blocking plate is fixed on the fixing portion, and the other end extends as a free end to the optical element, and the elastic member is located on the free end side of the light blocking plate, and is Connected to the upper surface of the optical component.

[0011] Preferably, the light blocking plate is provided with a first screw hole penetrating therein, and the fixing portion is provided with a second screw hole corresponding to the first screw hole, the light blocking plate and the fixing portion Secured by screws between.

[0012] Preferably, the elastic member includes a fixed end fixed on the light blocking plate, and an elastic terminal extending from the fixed end to the two sides, wherein the fixed end is fixed on the light blocking plate, The elastic terminal abuts on the upper surface of the optical element.

[0013] Preferably, a third screw hole is disposed on the fixed end, and a fourth screw hole is disposed on the light blocking plate, and the fixed end and the light blocking plate are fixed by screws.

[0014] Preferably, the light blocking plate is provided with a fixing groove recessed away from the optical element, and the fixed end of the elastic member is received in the fixing groove.

[0015] Preferably, the elastic member is an integrally formed elastic piece structure.

[0016] Preferably, the optical element is two symmetric prisms arranged symmetrically.

[0017] In order to solve the above technical problems, the present invention also provides a technical solution of: Providing an optical device comprising the optical component as described above.

Problem solution

Advantageous effects of the invention

Beneficial effect

[0018] The beneficial effects of the present invention are: Different from the prior art, the present invention provides an optical component including an optical component and a fixing component for fixing the optical component, the fixing component including a carrier and a block The light plate, the side of the light blocking plate adjacent to the optical element is provided with an elastic member that abuts and fixes the optical element. By using the supporting force of the bearing member and the elastic force of the elastic member to fix the prism, the processing difficulty can be reduced, and the light block is blocked by the light blocking plate to protect the elastic member from oxidation failure, thereby improving the reliability of the product. [0019]

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of an optical component of the present invention;

2 is a schematic structural view of a carrier of an optical component of the present invention;

3 is a schematic view showing the assembly of a light blocking plate and an elastic member of the optical component of the present invention;

4 is a schematic structural view of an optical device to which the optical component of the present invention is applied.

Embodiments of the invention

[0024] It is to be understood that the specific embodiments described herein are merely illustrative of the invention.

The present invention provides an optical component and an optical device using the same, which solves the problem that the optical component in the prior art may damage its optical performance in the fixing process, affecting the overall efficiency or reliability, and affecting the use effect.

As shown in FIG. 1, the optical assembly 100 provided by the present invention comprises an optical element 1 and a fixing assembly 2 for fixing the optical element 1.

[0027] The fixing assembly 2 includes a carrier 21, a light blocking plate 22, and an elastic member 23. The carrier 21 includes a support portion 211 for supporting the optical element 1 and a fixing portion 21 2 for extending the light barrier 22 projecting from the support portion 211. The light blocking plate 22 is fixed to the fixing portion 212, and a fixing space for accommodating the optical element 1 is formed with the supporting portion 211.

[0028] As shown in FIG. 2, further, the upper surface of the support portion 211 is further provided with a positioning surface 2111 protruding toward the optical element 1, and the optical element 1 is fixed and adhered to the positioning surface 2111. Specifically, the low refractive index glue is used to bond and fix the optical element 1 and the positioning surface 2111. The positioning surface 2111 may be a stepped surface of any shape protruding from the upper surface, and may be an isolated step surface or a plurality of discrete step surfaces. When the positioning surface 2111 is a plurality of discrete step surfaces, the shapes thereof may be the same or different, and may be implemented. The positioning surface 2111 is disposed such that the support portion 211 and the optical element 1 are adhered and fixed in a manner of dispensing, which can effectively avoid stress concentration and improve the reliability of the product. The same reduces the contact area with the prism, thereby reducing its influence on the efficiency of the optical element 1. [0029] As shown in FIG. 3, one end of the light blocking plate 22 is fixed on the fixing portion 212, and the other end extends as a free end to the upper side of the optical element 1. The elastic member 23 is fixed on the light blocking plate 22 and located at the light blocking plate 22. The free end side is abutted on the upper surface of the optical element 1. When the optical element 1 is fixed in the fixed space, the elastic member 23 is compressed by force, and the optical element 1 is pressed and fixed in the fixed space. Preferably, the light blocking plate 22 is provided with a fixing groove 221 which is recessed away from the optical element 1 , and the elastic member 23 is fixed in the fixing groove 221 .

[0030] The elastic member 23 may be a spring structure or a spring member. Specifically, in the embodiment, the elastic member 23 is an integrally formed elastic structure, and includes a fixed end 231 fixed in the fixing groove 221 of the light blocking plate 22, The elastic terminal 232 is bent and extended from the fixed end 231 to the both sides, and the elastic terminal 232 abuts on the upper surface of the optical element 1.

[0031] The light blocking plate 22 and the fixing portion 212 are fixed by screws. Specifically, the light blocking plate 22 is provided with a first screw hole 222 penetrating therein, and the fixing portion 212 is provided with a second screw corresponding to the first screw hole 222. The hole 2121, the light blocking plate 22 and the fixing portion 212 are fixedly connected by a screw passing through the first screw hole 222 and the second screw hole 2121.

[0032] Correspondingly, the elastic member 23 and the light blocking plate 22 are also fixed by screws. Specifically, the third screw hole 2311 is disposed on the fixed end 231, and the fourth screw hole 223 is disposed on the light blocking plate 22, and the fixed end 231 is The light blocking plates 22 are fixed by screws passing through the third screw holes 2311 and the fourth screw holes 223, respectively.

[0033] The fixing of the prism by the elastic member 23 and the carrier 21 can effectively improve the fixing effect and reduce the processing difficulty.

Further, the contact surface of the carrier and the prism is dispensed by a low refractive index glue to achieve further fixation, thereby improving the reliability of the product. The same element blocks the elastic member 23 by the light blocking plate 22, prevents the elastic member 23 from being oxidized, and the bonding of the positioning surface 2111 with the glue reduces the contact area with the prism, thereby reducing the influence on the efficiency of the optical element.

[0034] It should be noted that the optical component of the present invention can be applied to the fixing of any optical component having an optical surface, and is particularly suitable for the fixing of a prism. Specifically, in the embodiment, the optical component is two symmetric prisms disposed symmetrically. .

[0035] The following is a description of a specific application environment, as shown in FIG. 4, which is a schematic structural view of an optical device such as a projector using the optical component of the present invention, including a laser light source 500, an optical component 100, a mirror 200, and a convex lens. 300 and light machine square bar 400. Two symmetrical symmetric prisms are fixed in the optical assembly 100. The laser light source 500 includes a first laser light source 501 and a second laser light source 502, and the mirror 20 0 includes two corresponding to the first laser light source 501 and the second laser light source 502, respectively. The two right-angle prisms combine the laser light generated by the first laser light source 501 and the second laser light source 502 or the fluorescence generated by the phosphors excited by the first laser light source 501 and the second laser light source 502, more specifically, The light emitted by the laser light source 500 first passes through the mirror 200 and is focused at the first surface 101 of the right-angle prism into a rectangular spot matching the size of the first surface 101 of the right-angle prism, and the light entering the first surface 101 of the right-angle prism. After the prism is plated with the third surface 103 after the full reflection film, reflection occurs from the second surface 102, and since the fixing assembly of the present invention is used, the two triangular sides of the right-angle prism can be polished, and have a good whole The reflective performance can effectively prevent the light from exiting from the side, increase the efficiency of the light output from the right-angle prism, and reduce the illumination of the elastic member and improve its reliability.

[0036] Similarly, the light emitted from the laser light source 2 is also emitted from the fourth surface 104, and finally the light emitted from the second surface 102 and the fourth surface 104 is collected by the convex lens 300 into the optical square bar 400, which is equivalent to The rectangular spot combined with the second surface 102 and the fourth surface 104 is imaged by the lens system to the entrance of the light machine square bar. The entire system not only has good optical performance, but also has a simple structure and low cost.

[0037] The beneficial effects of the present invention are: Different from the prior art, the present invention provides an optical component including an optical component and a fixing component for fixing the optical component, the fixing component including a carrier and a block The light plate, the side of the light blocking plate adjacent to the optical element is provided with an elastic member that abuts and fixes the optical element. By using the supporting force of the bearing member and the elastic force of the elastic member to fix the prism, the processing difficulty can be reduced, and the light is blocked by the light blocking plate to protect the elastic member from oxidation failure, thereby improving the reliability of the product.

The above description is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to others. The related technical fields are all included in the scope of patent protection of the present invention.

[0039]

Claims

claims

An optical component, characterized in that it includes an optical element and a fixing component for fixing the optical element. The fixing component includes a carrier for supporting the optical element, is fixed on the carrier and is connected to the carrier. A light-shielding plate forming a fixed space for the optical element is formed between the carriers. An elastic member is provided on one side of the light-blocking plate close to the optical element. The optical element is fixed in the fixed space and against the elastic piece. superior.

The optical assembly according to claim 1, wherein the carrier includes a support portion for supporting the optical element and a fixing portion protruding and extending from the support portion for fixing the light barrier, so The fixed space is formed between the light blocking plate and the supporting part. The optical assembly according to claim 2, wherein the upper surface of the support part is provided with a positioning surface protruding toward the direction of the optical element, and the optical element is fixed and bonded to the positioning surface.

The optical component according to claim 3, wherein the optical element and the positioning surface are bonded and fixed using low refractive index glue.

The optical assembly according to claim 2, wherein one end of the light blocking plate is fixed on the fixing part, and the other end extends as a free end to above the optical element, and the elastic member is located on the light blocking plate. One side of the free end and abuts against the upper surface of the optical element.

The optical assembly according to claim 2, wherein the light shielding plate is provided with a first screw hole penetrating through it, and the fixing part is provided with a second screw hole corresponding to the first screw hole, so The light blocking plate and the fixing part are fixed by screws.

The optical assembly according to claim 1, wherein the elastic member includes a fixed end fixed on the light shielding plate, and an elastic terminal bent and extended from the fixed end to both sides, and the fixed end is fixed on the light shielding plate. On the light baffle, the elastic terminal is in contact with the upper surface of the optical element.

The optical assembly according to claim 7, characterized in that: a third screw hole is provided on the fixed end, a fourth screw hole is provided on the light blocking plate, and a screw is passed between the fixed end and the light blocking plate. fixed.

[Claim 9] The optical assembly according to claim 8, wherein the light blocking plate is provided with a fixing groove that is concave in a direction away from the optical element, and the fixed end of the elastic member is received in the fixing groove.

[Claim 10] The optical component according to claim 9, characterized in that the elastic member is an integrally formed elastic piece structure.

[Claim 11] The optical component according to claim 1, characterized in that the optical element is two symmetrically arranged right-angle prisms.

[Claim 12] An optical device, characterized in that it includes an optical component as described in any one of claims 1 to 11.