CN110543067A

CN110543067A - Lens holder for projection optical assembly

Info

Publication number: CN110543067A
Application number: CN201811579864.8A
Authority: CN
Inventors: 黄奇聪; 林鉊鑫; 刘于任; 官彦荣
Original assignee: XIUYU ENTERPRISE CO Ltd
Current assignee: XIUYU ENTERPRISE CO Ltd; Solid Year Co Ltd
Priority date: 2018-05-28
Filing date: 2018-12-24
Publication date: 2019-12-06

Abstract

the utility model provides a lens fixing base for projection optical assembly, projection optical assembly includes a base, and the lens fixing base is equipped with a lens, and the lens fixing base is equipped with a protruding portion, and the base is located to the lens fixing base, can comparatively firmly assemble the lens fixing base through pressing from both sides protruding portion of tool collocation, comparatively conveniently and detect timing optical characteristic fast, promote production efficiency and manufacturing quality.

Description

Lens holder for projection optical assembly

Technical Field

The present invention relates to a projection optical assembly, and more particularly, to a lens holder for a projection optical assembly.

background

Since the micro-projector has a light volume and is popular and used by consumers for a long time, the display characteristics and functions of the micro-projector are continuously enhanced and improved.

Because the structure of the micro projector is miniaturized, the components are correspondingly very small, the micro projector is not easy to be stably placed on the jig during assembly, and if the components are not pressed by other auxiliary jigs, the components cannot be really and stably positioned, so that the assembly difficulty is greatly increased, the production time is increased, and the production efficiency and the manufacturing quality are reduced.

disclosure of Invention

Therefore, the present invention is directed to a lens holder for a projection optical assembly, which can be stably disposed at a position to be fixed, and can conveniently and rapidly detect and adjust optical characteristics, thereby improving production efficiency and manufacturing quality.

in order to achieve the above object, the present invention provides a lens holder for a projection optical assembly, the projection optical assembly includes a base, the lens holder has a protruding portion, the lens holder is disposed on the base; by the technical characteristics, the lens fixing seat can be stably assembled, the optical characteristics can be conveniently and quickly detected and adjusted, and the production efficiency and the manufacturing quality are improved.

in a preferred embodiment of the present invention, the cross-sectional shape of the protrusion may be rectangular, square, or cross-shaped.

In a preferred embodiment of the present invention, the end face of the protruding portion is a flat surface or the end edge thereof is provided with a lead angle.

In a preferred embodiment of the present invention, the protrusion is disposed inside the at least one through hole of the base and does not exceed the bottom surface of the base.

In a preferred embodiment of the present invention, the lens holder is provided with an engaging portion capable of engaging with a concave-convex portion and a clamping fixture for positioning each other.

In a preferred embodiment of the present invention, at least one through hole of the base or one through hole of the light source base may be provided with an air permeable material or an air impermeable material.

In a preferred embodiment of the present invention, the base is adjacent to a light source base, the light source base includes a light source portion corresponding to the side of the base and an extension portion extending from the bottom side of the light source portion to the bottom of the base, the light source portion is provided with at least one light source set, the position of the at least one light source set corresponds to the lens fixing seat, and the extension portion is provided with a through hole correspondingly communicating with the at least one through hole.

In a preferred embodiment of the present invention, the at least one light source group is a laser light source.

In the preferred embodiment of the invention, the manufacturing method of the projection optical assembly applying the lens fixing seat comprises the steps of firstly sleeving the base on a lower jig, wherein the lower jig is arranged in the through hole of the base in a penetrating way, and the lens fixing seat is arranged on the lower jig in a way of corresponding to the through hole by the protruding part so as to enable the lens fixing seat to be arranged in the base in a suspended way; then an upper jig is arranged at the top of the lens fixing seat; then, the upper jig and the lower jig are used for moving the lens fixing seat, and then the lens fixing seat is fixed on the base.

The following detailed description will be given of the present invention. However, it should be understood by those skilled in the art that the detailed description and specific examples, while indicating the specific embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention as defined by the appended claims.

Drawings

Fig. 1 is a perspective combination view of a first preferred embodiment of the present invention.

Fig. 2 is an exploded perspective view of the first preferred embodiment of the present invention.

Fig. 3 is a top view of the first preferred embodiment of the present invention.

Fig. 4 is a full sectional view of the first preferred embodiment of the present invention.

Fig. 5 is a partially exploded perspective view of the first preferred embodiment of the present invention.

Fig. 6 to 8 are different embodiments of the first preferred embodiment of the present invention.

Fig. 9 is a perspective view of a second preferred embodiment of the present invention.

Fig. 10 to 15 are different embodiments of the second preferred embodiment of the present invention.

[ description of main reference numerals in the drawings ] of the embodiments of the present disclosure

10 base 11 through hole 12 first positioning part

13 bottom 14 second positioning part 16 reflector

18 lens 19 light path 20 lens fixing base

22 protruding part 30 light source seat 31 light source part

32 light source group 33 extension 34 through hole

40 lower jig 42 upper jig 46 embedded part

48 joint 50 lens fixing seat 51 base

52 cover 53 protrusion 54 recess

55 perforation

Detailed Description

It should be noted that the present invention can be applied to various projection optical systems, and the present embodiment is exemplified by a laser projection optical system, and those skilled in the art should understand that the description of the present embodiment and the claims scope includes the generic concept of the specific technical method, and the terms such as combination, position, and action include, but are not limited to, the description, the application field, and the specific technical features.

As shown in fig. 1 to 4, a lens holder 20 for a projection optical assembly according to a first preferred embodiment of the present invention is provided, wherein the projection optical assembly is suitable for compactly configuring various optical assemblies in a very small space, so as to minimize and miniaturize the overall size of the projection system and the projection apparatus.

The projection optical assembly includes a base 10, and the base 10 is a housing having an inner space for disposing various optical lenses. In the base 10 of the preferred embodiment, the base includes three first positioning portions 12 and three second positioning portions 14 corresponding to the first positioning portions 12, which are parallel to each other, for example, each first positioning portion 12 is in a groove shape for installing a lens holder 20, each second positioning portion 14 is for installing a reflector 16, and as shown in fig. 3, a lens 18 of each lens holder 20 and each reflector 16 form a light path 19 for guiding the projection light.

The bottom of the base 10 is provided with through holes 11 corresponding to the positions of the first positioning portions 12, the base 10 is adjacent to a light source seat 30, the light source seat 30 includes a light source portion 31 corresponding to each of the first positioning portions 12 of the base 10, and an extending portion 33 extending from the bottom side of the light source portion 31 to the lower side of the base 10, and the extending portion 33 can improve the overall heat dissipation effect of the light source seat 30. The light source portion 31 has three light source groups 32, each light source group 32 corresponds to each first positioning portion 12, in other words, the lens holder 20 is disposed at a position of the base 10 corresponding to the light source group 32 or located in front of the light source group 32, in the light source group 32 of the preferred embodiment, a laser light source is taken as an example, and the light source base 30 is made of a metal material capable of increasing heat dissipation. The through holes 11 of the base 10 correspond to the three-way holes 34 of the extension 33, in addition to penetrating the bottom surface 13 of the base 10.

The lens holder 20 is substantially square, the lens holder 20 has a protrusion 22, in the preferred embodiment, the protrusion 22 is a rod with a substantially rectangular cross-sectional area, the end surface of the protrusion 22 can be flat, have a slope or other shapes, and can be provided with a guiding angle at the end edge for convenient assembly. The lens holder 20 is mainly disposed on the first positioning portion 12 of the base 10, and the protruding portion 22 is disposed inside the through hole 11, so as to not exceed the bottom surface 13 of the base 10 as much as possible, thereby avoiding the interference with the lens holder 20 when the light source holder 30 is detached due to maintenance.

When the lens holders 20 of the present invention are assembled on the base 10, the lens holders 20 are mainly suspended in the first positioning portion 12 by using a clamp jig, as shown in fig. 1 to 5, the clamp jig of the preferred embodiment includes a lower jig 40 and an upper jig 42, the lower jig 40 is an upright tube, the base 10 and the light source holder 30 are sleeved on the lower jig 40 from top to bottom, the lower jig 40 is inserted through the through hole 34 and the through hole 11, the lens holders 20 can be inserted into the first positioning portion 12 from top to bottom, the protruding portion 22 is inserted into the top of the lower jig 40 corresponding to the through hole 11, the lens holders 20 are directly suspended in the first positioning portion 12 by leaning against the top edge of the lower jig 40, and the upper jig 42 can be curved, inclined, or flat, the bottom end directly abuts against the top of the lens holders 20, and the lens holders are fixed by the upper jig, The lower jigs 42, 40 clamp the lens holder 20 and can move and adjust in the front, rear, up, down, left, right directions and the like relative to the base 10 or the light source group 32 until the lens 18 of the lens holder 20 generates the correct optical characteristics, and then the curable adhesive (UV adhesive) is filled between the lens holder 20 and the base 10, and the curable adhesive is irradiated by the UV light to fix the lens holder 20 on the base 10. In addition, after the lens holder 20 is assembled, a gas-permeable material may be disposed in the through hole 11 of the base 10 or the through hole 34 of the light source holder 30, or the through hole 11 or the through hole 34 may be directly sealed by a gas-impermeable material.

Because the lens fixing base 20 is directly inserted into the lower fixture 40 by the protruding portion 22 and is suspended in the first positioning portion 12, the lens fixing base 20 can be stably disposed at the position to be fixed, and the lens fixing base 20 is clamped by the upper fixture 42, the detection and adjustment process of the optical characteristics can be more convenient and fast, and the production efficiency and the manufacturing quality can be improved.

In order to achieve better positioning effect between the lens holder and the clip fixture, as shown in fig. 6 and 7, the upper fixture 42 and the lens holder 20 can be positioned by an engaging portion 46 with concave-convex fit, or as shown in fig. 8, the upper fixture 42 and the lens holder 20 can be positioned by an inclined engaging portion 48. The clamping jig of the invention can also enable the top end of the lower jig to be provided with a blind hole besides the upper and lower jig manners disclosed above, and the convex protrusion part of the lens fixing seat directly extends into the blind hole and abuts against the bottom of the blind hole, so that the lens fixing seat can be suspended in the base. Furthermore, the lens fixing seat can be positioned and placed on the lower fixture 40 by suction, and then fixed by UV glue after the adjustment is completed, so that the technical effect of the invention can be achieved.

As shown in fig. 9, a lens holder 50 for a projection optical assembly according to a second preferred embodiment of the present invention is characterized by further comprising a cover 52 covering the base 51, wherein the base 51 does not have any through hole, the cover 52 can seal and isolate the interior of the base 51, and the protrusion 53 of the lens holder 50 faces the upward direction of the cover 52. The protruding portion 53 can be directly clamped by using a clamp jig, or the protruding portion 53 can be pre-positioned and then sucked by using a vacuum manner, so that the lens fixing seat 50 is suspended inside the base 51 by the protruding portion 53 in combination with the clamp jig, and the lens fixing seat 50 is stably arranged at the position to be fixed for the detection and adjustment process of the optical characteristics.

As shown in fig. 10, the length of the protrusion 53 can be short without interfering with the cover 52, and the cover 52 does not need to be additionally provided with a recess for accommodating the protrusion 53. As shown in fig. 11, when the length of the protruding portion 53 is longer and interferes with the cover 52, the cover 52 may be provided with a recessed portion 54 corresponding to the protruding portion 53, so that the protruding portion 53 extends to the recessed portion 54, or as shown in fig. 12, the top surface of the cover 52 is protruded corresponding to the recessed portion 54, so as to correspond to the protruding portion 53 with longer length. Even as shown in fig. 13, the cover 52 directly provided with the through hole 55 can be used for providing the protrusion 53. Alternatively, the top surface of the cover 52 may be provided with a gas-permeable material at the through hole 55, or the through hole 55 may be directly sealed by a gas-impermeable material.

It should be noted that the cross-sectional shape of the protruding portion 53 shown in fig. 14 can be a square, or the cross-sectional shape of the protruding portion 53 shown in fig. 15 can be a cross, so that the lens holder 50 can be disposed in a manner that a single clamp can be conveniently used to directly clamp the lens holder when the lens holder is required to be matched with the light source set to have two axial directions, thereby providing the technical effects of fool-proofing or increasing the process efficiency.

Claims

1. a lens fixing seat for a projection optical assembly comprises a base and a light source group, wherein the lens fixing seat is provided with a lens, the lens fixing seat is provided with a protruding part, and the lens fixing seat is arranged at a position, corresponding to the light source group or in front of the light source group, of the base.

2. The lens holder for a projection optical assembly as claimed in claim 1, wherein the base has at least one through hole, and the protrusion corresponds to the at least one through hole.

3. The lens holder for a projection optical assembly as claimed in claim 2, wherein the protrusion is disposed inside the at least one through hole.

4. The lens holder for a projection optical assembly according to claim 2, wherein the protrusion does not extend beyond the bottom surface of the base.

5. The lens holder for a projection optical assembly according to claim 1, wherein the end surface of the protruding portion is a flat surface or the end edge thereof is provided with a lead angle.

6. The lens holder of claim 1, wherein the lens holder is disposed on a plane with respect to the protruding portion, or has an engaging portion capable of engaging with a concave-convex portion to be positioned with a fixture.

7. The lens holder for a projection optical assembly according to claim 1, wherein the cross-sectional shape of the protrusion may be rectangular, square, or cross-shaped.

8. The lens holder of claim 1, wherein a curable adhesive is disposed between the lens holder and the base.

9. The lens holder of claim 1, wherein the at least one aperture is provided with a gas-permeable material or a gas-impermeable material.

10. The lens holder of claim 1, wherein the projection optics further comprises a cover disposed on the base.

11. The lens holder for a projection optical assembly according to claim 10, wherein the cover has a recess corresponding to the protrusion of the lens holder.

12. The lens holder of claim 10, wherein the top surface of the cover is convex at a position corresponding to the recessed portion.

13. The lens holder for a projection optical assembly according to claim 10, wherein the cover has at least one through hole corresponding to the protrusion.

14. The lens holder of claim 13, wherein the at least one aperture is provided with a gas-permeable material or a gas-impermeable material.

15. The lens holder for a projection optical assembly as claimed in claim 1, wherein the base is adjacent to a light source holder, the light source holder includes a light source portion corresponding to a side of the base and an extension portion extending from a bottom side of the light source portion to a bottom side of the base, the light source portion has at least one light source set, the at least one light source set is corresponding to the lens holder, and the extension portion has a through hole corresponding to the through hole.

16. The lens holder for a projection optics assembly of claim 15, wherein each of the through holes is provided with a gas permeable material or a gas impermeable material.

17. The lens holder of claim 15, wherein the at least one light source group is a laser light source.

18. A method for manufacturing a projection optical assembly using the lens holder of claim 1, comprising:

a. The clamping fixture is directly arranged on the convex part of the lens fixing seat;

b. The lens fixing seat is suspended in the base along with the clamping fixture to detect and adjust the optical characteristics; and

c. The lens fixing seat is fixed on the base.

19. A method for manufacturing a projection optical assembly using the lens holder of claim 2, comprising:

a. The base is sleeved in a lower jig, the lower jig penetrates through the through hole of the base, and the lens fixing seat is arranged on the lower jig in a mode that the protruding portion faces to the through hole, so that the lens fixing seat is suspended in the base;

b. Arranging an upper jig on the top of the lens fixing seat;

c. Moving the lens fixing seat by using the upper jig and the lower jig; and

d. the lens fixing seat is fixed on the base.