CN115016206B

CN115016206B - Projection ray apparatus and electronic equipment

Info

Publication number: CN115016206B
Application number: CN202210475232.7A
Authority: CN
Inventors: 宋志辉
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2024-03-29
Anticipated expiration: 2042-04-29
Also published as: CN115016206A

Abstract

The application discloses a projection optical machine and electronic equipment, the projection optical machine includes a housing, a cover plate, a lens support, a connecting shaft and a lens, the housing includes a first plate body, a first opening part arranged opposite to the first plate body and a second opening part arranged opposite to the first plate body; the housing is internally provided with an accommodating space which is communicated with the first opening part and the second opening part; the cover plate is connected with the shell and is covered at the first opening part; the lens bracket is arranged in the accommodating space; the connecting shaft penetrates through the cover plate and the lens bracket and is connected with the first plate body; the lens is connected with the lens bracket, and the optical surface of the lens is arranged towards the second opening part.

Description

Projection ray apparatus and electronic equipment

Technical Field

The present disclosure relates to the field of optical devices, and more particularly, to a projection optical engine and an electronic device.

Background

With the vigorous development of science and technology, the projection technology has become mature, and the application field of projection equipment has become wider and wider, for example, the projection equipment is applied to business fields such as conference explanation, tour exhibition and sales promotion, the education fields such as school teaching and academic discussion, and the home field such as home theater. In recent years, digital light processing (Digital Light Processing; DLP) projectors have become the dominant technology of current projectors, which are the preferred choice in projection display products in terms of light weight, durability, high brightness, high contrast, etc.

In the digital light processing projection apparatus of the prior art, the fixing bracket of the optical lens is generally connected with the apparatus main body only by a screw; in long-term use to and carry out repeated lock when dismouting fixed bolster and attach, lead to the screw to take place smooth tooth easily to cause the fixed bolster of optical lens to have the risk of pine to take off, bring adverse effect to projection equipment's steady operation.

In view of this, a new solution is needed to solve the above technical problems.

Disclosure of Invention

An object of the present application is to provide a new technical solution for a projection light engine and an electronic device.

According to a first aspect of the present application, there is provided a projection light engine comprising:

a housing including a first plate body, a first opening portion provided opposite to the first plate body, and a second opening portion provided opposite to the first plate body; an accommodating space is formed in the shell and communicated with the first opening part and the second opening part;

the cover plate is connected with the shell and covers the first opening part;

a lens holder disposed within the receiving space;

the connecting shaft penetrates through the cover plate and the lens bracket and is connected with the first plate body;

and the lens is connected with the lens bracket, and the optical surface of the lens is arranged towards the second opening part.

Optionally, the cover plate is provided with a first perforation, the lens support is provided with a second perforation, the first plate body is provided with a third perforation, and the connecting shaft is arranged in the first perforation, the second perforation and the third perforation in a penetrating manner.

Optionally, the first perforation and/or the third perforation are filled with an adhesive.

Optionally, the side wall of the connecting shaft and/or the hole wall of the second perforation are provided with protrusions.

Optionally, the cover plate is provided with a first dispensing hole, and the first dispensing hole is connected with the lens bracket; and the first adhesive dispensing holes are filled with adhesive.

Optionally, the first plate body is provided with a second dispensing hole, the lens support is connected with the second dispensing hole, and the second dispensing hole is filled with an adhesive.

Optionally, the housing further includes a second board body disposed opposite to the second opening, and the projection light machine further includes a first fastener; the second plate body is provided with a first connecting hole; the first fastener is arranged in the first connecting hole and is abutted against the lens bracket.

Optionally, the projection light machine further includes a spring, the spring is sleeved outside the first fastener, and the spring is abutted to the second plate body.

Optionally, the projection light engine further comprises a second fastener, and the cover plate is fastened and connected with the shell through the second fastener.

Optionally, the lens holder has a receiving slot in which the lens is disposed.

Optionally, the lens support is provided with the boss in the lateral part of holding tank, the lens with boss looks butt.

According to a second aspect of the present application, there is provided an electronic device comprising a projection light engine as described in the first aspect.

In the projection ray apparatus that this application embodiment provided, owing to adopted the connecting axle to connect apron, lens support and shell, can improve the steadiness of lens support like this, and then ensure the steadiness of whole projection ray apparatus.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic diagram showing an exploded structure of a projection light machine according to the present application;

FIG. 2 is a schematic diagram of a housing of a projection light machine according to the present application;

FIG. 3 is a schematic diagram of a housing in a projection light machine according to the present application;

FIG. 4 is a schematic diagram of a cover plate of a projection light machine according to the present application;

FIG. 5 is a schematic view of a lens frame of a projection light machine according to the present application;

FIG. 6 is a schematic diagram showing a second structure of a lens frame in a projection optical engine according to the present application;

FIG. 7 is a schematic diagram of an overall structure of a projection light machine according to the present application;

fig. 8 is a schematic diagram of an overall structure of a projection light machine according to the present application.

Reference numerals illustrate:

1. a housing; 101. a first opening portion; 102. a second opening portion; 11. a first plate body; 110. a third perforation; 111. a second dispensing hole; 12. a second plate body; 120. a first connection hole; 100. a second connection hole; 2. a cover plate; 201. a first perforation; 202. a first dispensing hole; 203. a third connection hole; 3. a lens holder; 301. a second perforation; 302. a third dispensing hole; 303. a boss; 31. a receiving groove; 32. a protruding portion; 4. a connecting shaft; 5. a lens; 6. a first fastener; 7. a spring; 8. and a second fastener.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 to 8, according to one embodiment of the present application, there is provided a projection optical engine, the projection optical engine includes a housing 1 and a cover 2, the housing 1 includes a first board 11, a first opening 101 disposed opposite to the first board 11, and a second opening 102 disposed adjacent to the first board 11; the housing 1 has an accommodation space therein, which communicates with both the first opening 101 and the second opening 102; the cover plate 2 is connected with the shell 1, and the cover plate 2 is arranged at the first opening part 101 in a covering way; the lens comprises a lens body, a lens support 3, a connecting shaft 4 and a lens 5, wherein the lens support 3 is arranged in the accommodating space; the connecting shaft 4 passes through the cover plate 2 and the lens bracket 3 and is connected with the first plate body 11; the lens 5 is connected to the lens holder 3, and an optical surface of the lens 5 is disposed toward the second opening 102.

In the projection optical engine provided by the embodiment of the application, when in operation, the optical surface of the lens 5 arranged in the accommodating space of the housing 1 receives external light rays through the second opening 102 and generates certain optical action on the light rays; for example, the mirror 5 is a mirror, which reflects the light received through the second opening 102.

In the projection optical engine provided in the embodiment of the present application, during assembly, the lens 5 is first fixed on the lens support 3, then the lens support 3 and the lens 5 are assembled into the accommodating space of the housing 1, and during assembly, the optical surface of the lens 5 faces the second opening 102, so as to enable the optical surface of the lens 5 to receive external light through the second opening 102. The optical surface of the lens 5 means that the lens 5 has a first surface and a second surface that are disposed opposite to each other, wherein the first surface is connected to the lens support 3, and the second surface that faces away from the lens support 3 is the optical surface of the lens 5. Further, the connecting shaft 4 sequentially passes through the cover plate 2 and the lens bracket 3, and then is connected to the first plate body 11 of the housing 1, the cover plate 2 is covered at the first opening 101 opposite to the first plate body 11 on the housing 1, and then the cover plate 2 and the housing 1 are further connected and fixed, and a specific connection and fixation manner can be completed by using a fastener, for example. More specifically, the central axis direction of the connecting shaft 4 is perpendicular to the first plate body 11 and the cover plate 2, and parallel to the lens 5.

In the projection optical engine provided in the embodiment of the present application, the cover plate 2, the lens support 3 and the housing 1 are connected by the connecting shaft 4, so that the connection of the lens support 3 in the direction perpendicular to the connecting shaft 4 is very stable and firm. Therefore, even if the other connection fixing modes between the cover plate 2 and the housing 1, such as the connection fixing of the fastener, are loosened, such as the fastener is loosened after long-time use or after a plurality of disassembly times, due to the connection effect of the connecting shaft 4, the lens support 3 is not easy to loose, so that the stability of the lens support 3 is improved, and the stability of the whole projection optical machine is further ensured.

Referring to fig. 2-6, in one embodiment, the cover 2 is provided with a first through hole 201, the lens support 3 is provided with a second through hole 301, the first plate 11 is provided with a third through hole 110, and the connecting shaft 4 is disposed through the first through hole 201, the second through hole 301 and the third through hole 110.

In this specific example, when assembled, the connecting shaft 4 is inserted through the first through hole 201 in the cover plate 2, the second through hole 301 in the lens holder 3, and the third through hole 110 in the first plate 11 in this order; one end of the connecting shaft 4 along the central axis direction is exposed to the first through hole 201, and the other end is exposed to the third through hole 110. Further, in order to enhance the connection stability of the connection shaft 4, the connection shaft 4 may be in interference fit with at least one of the first through hole 201 and the third through hole 110. The interference fit is not suitable for the fit between the connecting shaft 4 and the lens support 3, and since the connecting shaft 4 passes through the lens support 3 along the width direction of the lens support 3, that is, the second through hole 301 on the lens support 3 passes through the lens support 3 along the width direction of the lens support 3, the assembly difficulty is increased if the interference fit is adopted between the connecting shaft 4 and the lens support 3. In addition, the connection stability of the connection shaft 4 can be ensured as long as the end position of the connection shaft 4 is firmly connected with at least one of the first through hole 201 and the third through hole 110.

Further, the lens holder 3 may be thickened, for example, by integrally forming the protruding portion 32, at the position where the connecting shaft 4 is provided.

In one embodiment, further, the first perforation 201 and/or the third perforation 110 are filled with an adhesive.

In this specific example, in order to secure the connection stability of the connection shaft 4, the connection shaft 4 is bonded to at least one of the first through hole 201 and the third through hole 110 by an adhesive, so that the connection shaft 4 does not come loose. Alternatively, an adhesive is filled between the first through hole 201 and the connection shaft 4, and between the third through hole 110 and the connection shaft 4, so that the connection stability of the connection shaft 4 can be further ensured. Further, the binder may be, for example, UV glue.

In one embodiment, further, the side wall of the connecting shaft 4 and/or the hole wall of the second through hole 301 are provided with protrusions.

In this specific example, the provision of the protruding portion may allow the contact between the connection shaft 4 and the second penetration hole 301 to be a line contact or a point contact instead of a surface contact, which may facilitate the assembly between the connection shaft 4 and the second penetration hole 301. Further, the protruding portion may be an elongated protrusion or a dot protrusion.

Referring to fig. 4-6, in one embodiment, the cover 2 is provided with a first dispensing hole 202, and the first dispensing hole 202 is connected to the lens support 3; the first dispensing hole 202 is filled with an adhesive.

In this specific example, the first dispensing hole 202 formed in the cover plate 2 is located at a position corresponding to the lens support 3, and after the adhesive is filled in the first dispensing hole 202, the connection stability between the cover plate 2 and the lens support 3 can be improved by the adhesive; further, the binder may be, for example, UV glue. Further, a third dispensing hole 302 may be formed on the lens bracket 3, the first dispensing hole 202 is communicated with the third dispensing hole 302, and the adhesive is filled in the first dispensing hole 202 and the third dispensing hole 302, so that the filling amount of the adhesive can be increased, and the reliability of the connection between the cover plate 2 and the lens bracket 3 is further improved.

Referring to fig. 3, in one embodiment, the first plate 11 is provided with a second dispensing hole 111, the lens bracket 3 is connected to the second dispensing hole 111, and the second dispensing hole 111 is filled with an adhesive.

In this specific example, the second dispensing hole 111 formed in the first plate 11 is located at a position corresponding to the lens bracket 3, and after the adhesive is filled in the second dispensing hole 111, the connection stability between the housing 1 and the lens bracket 3 can be improved by the adhesive; further, the binder may be, for example, UV glue.

Referring to fig. 1-2, in one embodiment, the housing 1 further includes a second plate 12 disposed opposite the second opening 102, and the projection light engine further includes a first fastener 6; the second plate 12 is provided with a first connecting hole 120; the first fastening member 6 is disposed in the first connecting hole 120 and abuts against the lens support 3.

In this particular example, the lens holder 3, and thus the lens 5, can be adjusted by screwing the first fastener 6 to achieve the optimal working condition of the lens 5.

Referring to fig. 1-2, in one embodiment, the projection optical engine further includes a spring 7, where the spring 7 is sleeved outside the first fastener 6, and the spring 7 abuts against the second plate 12.

In this particular example, adjustment of the lens holder 3 by the spring 7 in combination with the first fastener 6 increases the range of adjustment and improves the accuracy of the adjustment.

Referring to fig. 1-4, in one embodiment, the projection light engine further includes a second fastener 8, and the cover plate 2 is fastened to the housing 1 by the second fastener 8.

In this specific example, further, a second connection hole 100 is formed in the top of the housing 1, a third connection hole 203 is formed in the cover plate 2, and a second fastener 8 is screwed into the third connection hole 203 and the second connection hole 100 to achieve a fastening connection between the cover plate 2 and the housing 1. In the projection optical engine provided in the embodiment of the present application, due to the arrangement of the connecting shaft 4, even if the second fastening member 8 is loosened, the stability of the connection of the lens bracket 3 can be ensured by means of the connecting shaft 4, so as to ensure the stability of the whole projection optical engine.

Referring to fig. 5-6, in one embodiment, the lens holder 3 has a receiving slot 31, and the lens 5 is disposed in the receiving slot 31.

In this specific example, the lens 5 is fitted in the receiving groove 31 and the lens 5 is connected to the lens holder 3 by an adhesive so that the lens 5 can be firmly attached to the lens holder 3.

Referring to fig. 5 to 6, in one embodiment, further, the lens holder 3 is provided with a boss 303 at a side of the receiving groove 31, and the lens 5 abuts against the boss 303.

In this particular example, the boss 303 provided at the side of the receiving groove 31 can further improve the reliability of the connection of the lens 5 with the lens holder 3.

According to another embodiment of the present application, an electronic device is provided, comprising a projection light engine as described above. The electronic device may be, for example, a digital light processing projector.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. A projection light engine, comprising:

a housing (1), wherein the housing (1) comprises a first plate body (11), a first opening (101) arranged opposite to the first plate body (11), and a second opening (102) arranged adjacent to the first plate body (11); an accommodating space is formed in the shell (1), and the accommodating space is communicated with the first opening part (101) and the second opening part (102);

the cover plate (2) is connected with the shell (1), and the cover plate (2) is arranged at the first opening part (101) in a covering way;

a lens holder (3), the lens holder (3) being arranged in the accommodation space;

the connecting shaft (4) penetrates through the cover plate (2) and the lens bracket (3) and is connected with the first plate body (11);

a lens (5), wherein the lens (5) is connected with the lens bracket (3), and the optical surface of the lens (5) is arranged towards the second opening (102);

the cover plate (2) is provided with a first dispensing hole (202), and the first dispensing hole (202) is connected with the lens bracket (3); the first dispensing hole (202) is filled with an adhesive; the first plate body (11) is provided with a second dispensing hole (111), the lens support (3) is connected with the second dispensing hole (111), and the second dispensing hole (111) is filled with an adhesive.

2. The projection light machine according to claim 1, wherein the cover plate (2) is provided with a first perforation (201), the lens support (3) is provided with a second perforation (301), the first plate body (11) is provided with a third perforation (110), and the connecting shaft (4) is arranged in the first perforation (201), the second perforation (301) and the third perforation (110) in a penetrating manner.

3. The projection light engine according to claim 2, characterized in that the first perforation (201) and/or the third perforation (110) are filled with an adhesive.

4. The projection light engine according to claim 2, characterized in that the side wall of the connecting shaft (4) and/or the wall of the second perforation (301) is provided with a bulge.

5. The projection light engine according to claim 1, characterized in that the housing (1) further comprises a second plate body (12) arranged opposite the second opening (102), the projection light engine further comprising a first fastener (6); the second plate body (12) is provided with a first connecting hole (120); the first fastener (6) is arranged in the first connecting hole (120) and is abutted against the lens bracket (3).

6. The projection light engine according to claim 5, further comprising a spring (7), wherein the spring (7) is sleeved outside the first fastening piece (6), and the spring (7) is abutted against the second plate body (12).

7. The projection light engine according to claim 1, characterized in that the projection light engine further comprises a second fastener (8), the cover plate (2) being fastened to the housing (1) by means of the second fastener (8).

8. The projection light engine according to claim 1, characterized in that the lens holder (3) has a receiving groove (31), the lens (5) being arranged in the receiving groove (31).

9. The projection light engine according to claim 8, characterized in that the lens holder (3) is provided with a boss (303) at the side of the receiving groove (31), the lens (5) being in abutment with the boss (303).

10. An electronic device, characterized in that the electronic device comprises a projection light engine as claimed in any one of claims 1-9.