CN115016206A

CN115016206A - Projection optical machine and electronic equipment

Info

Publication number: CN115016206A
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: 2022-09-06
Anticipated expiration: 2042-04-29
Also published as: CN115016206B

Abstract

The application discloses a projection optical machine and electronic equipment, wherein the projection optical machine comprises a shell, a cover plate, a lens support, a connecting shaft and a lens, wherein the shell comprises a first plate body, a first opening part arranged opposite to the first plate body and a second opening part arranged adjacent to the first plate body; the shell 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 support and is connected with the first plate body; the lens is connected with the lens support, and the optical surface of the lens faces the second opening.

Description

Projection optical machine and electronic equipment

Technical Field

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

Background

With the rapid development of scientific technology, the projection technology has become mature day by day, 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 display and sales promotion activities, education fields such as school teaching and academic discussion, and household fields such as home theater. In recent years, Digital Light Processing (DLP) projectors have become the mainstream technology of projectors, and are the preferred choice in projection display products in terms of lightness, durability, high brightness, high contrast, etc.

In the digital light processing projection device of the prior art, the fixing bracket of the optical lens is generally connected with the device main body only through screws; in long-term use and when the fixing support is disassembled and assembled, the screw is repeatedly locked, so that the screw is easily slipped, the fixing support of the optical lens is loosened, and the stable use of the projection equipment is adversely affected.

In view of the above, a new technical 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 optical machine and an electronic device.

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

the shell comprises a first plate body, a first opening part and a second opening part, wherein the first opening part is arranged opposite to the first plate body, and the second opening part is arranged adjacent to the first plate body; the shell 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 covers the first opening part;

a lens holder disposed within the accommodation space;

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

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

Optionally, the cover plate is provided with a first through hole, the lens support is provided with a second through hole, the first plate body is provided with a third through hole, and the connecting shaft penetrates through the first through hole, the second through hole and the third through hole.

Optionally, the first through hole and/or the third through hole are filled with a binder.

Optionally, the side wall of the connecting shaft and/or the hole wall of the second bore is provided with a protrusion.

Optionally, the cover plate is provided with a first dispensing hole, and the first dispensing hole is connected with the lens support; and the first dispensing hole is filled with a binder.

Optionally, a second dispensing hole is formed in the first plate body, the lens support is connected with the second dispensing hole, and a bonding agent is filled in the second dispensing hole.

Optionally, the housing further includes a second plate disposed opposite to the second opening, and the projector 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 support.

Optionally, the projection optical machine further includes a spring, the spring is sleeved outside the first fastener, and the spring abuts against the second plate body.

Optionally, the projector engine further includes a second fastener, and the cover plate is fastened to the housing by the second fastener.

Optionally, the lens carrier has a receiving groove in which the lens is disposed.

Optionally, the lens support is provided with a boss at a side portion of the receiving groove, and the lens abuts against the boss.

According to a second aspect of the present application, there is provided an electronic device comprising the light projector 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.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

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

FIG. 1 is an exploded view of a projection light engine according to the present application;

FIG. 2 is a first schematic view of a housing of a projector according to the present invention;

FIG. 3 is a schematic structural diagram of a housing of a projection optical machine according to the present invention;

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

FIG. 5 is a first schematic view of a lens holder of a projection optical machine according to the present disclosure;

FIG. 6 is a second schematic structural view of a lens holder of a projection optical machine according to the present invention;

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

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

Description of the reference numerals:

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 glue hole; 303. a boss; 31. accommodating grooves; 32. a projection; 4. a connecting shaft; 5. a lens; 6. a first fastener; 7. a spring; 8. 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, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

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

Techniques, methods, and apparatus known to those 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 particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 8, according to an embodiment of the present application, a projection optical engine is provided, the projection optical engine includes a housing 1 and a cover plate 2, the housing 1 includes a first plate 11, a first opening 101 disposed opposite to the first plate 11, and a second opening 102 disposed adjacent to the first plate 11; the housing 1 has a housing space therein, and the housing space communicates with both the first opening 101 and the second opening 102; the cover plate 2 is connected with the housing 1, and the cover plate 2 covers the first opening part 101; the lens holder 3 is arranged in the accommodating space; the connecting shaft 4 penetrates through the cover plate 2 and the lens support 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 optical projection engine provided by the embodiment of the present application, during operation, the optical surface of the lens 5 disposed in the accommodating space of the housing 1 receives external light through the second opening 102 and performs a certain optical action on the light; for example, if the mirror 5 is a mirror, it reflects light received through the second opening 102.

In the optical projection engine provided in the embodiment of the present application, during assembly, the lens 5 is first fixed on the lens holder 3, then the lens holder 3 is assembled into the accommodating space of the housing 1 together with the lens 5, and during assembly, the optical surface of the lens 5 faces the second opening 102, so that the optical surface of the lens 5 receives external light through the second opening 102. The optical surface of the lens 5 is that the lens 5 has a first surface and a second surface which are opposite to each other, wherein the first surface is connected with the lens support 3, and the second surface which is away from the lens support 3 is the optical surface of the lens 5. Further, the connecting shaft 4 sequentially penetrates through the cover plate 2 and the lens holder 3, and then is connected to the first plate 11 of the housing 1, the cover plate 2 covers the first opening 101 of the housing 1, which is opposite to the first plate 11, and then the cover plate 2 and the housing 1 are further connected and fixed, and a specific connection and fixing 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 is parallel to the lens 5.

In the projection optical machine provided by the embodiment of the application, the cover plate 2, the lens bracket 3 and the shell 1 are connected by the connecting shaft 4, so that the lens bracket 3 is very firmly and firmly connected in the direction perpendicular to the connecting shaft 4. Therefore, even if other connection fixing modes such as the connection fixing of the fastener between the cover plate 2 and the shell 1 are loosened, for example, the fastener is loosened after being used for a long time or after being disassembled for a plurality of times, the lens support 3 is not easy to loosen due to the connection effect of the connecting shaft 4, so that the stability of the lens support 3 is improved, and the stability of the whole projection light machine is further ensured.

Referring to fig. 2 to 6, in an embodiment, the cover plate 2 is formed with a first through hole 201, the lens holder 3 is formed with a second through hole 301, the first plate 11 is formed with a third through hole 110, and the connecting shaft 4 is inserted into the first through hole 201, the second through hole 301 and the third through hole 110.

In this specific example, during assembly, the connecting shaft 4 is inserted through the first through hole 201 of the cover plate 2, the second through hole 301 of the lens holder 3, and the third through hole 110 of 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 improve 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 cooperation between connecting axle 4 and lens support 3 should not adopt interference fit, because connecting axle 4 passes lens support 3 along the width direction of lens support 3, and second on the lens support 3 is perforated 301 and is run through the setting along the width direction of lens support 3 promptly, consequently if adopt interference fit then can increase the equipment degree of difficulty between connecting axle 4 and the lens support 3. Moreover, as long as the end position of the connecting shaft 4 is firmly connected with at least one of the first through hole 201 and the third through hole 110, the stability of the connection of the connecting shaft 4 can be ensured.

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

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

In this specific example, in order to ensure the stability of the connection of the connecting shaft 4, the connecting shaft 4 is not loosened by bonding the end position of the connecting shaft 4 to at least one of the first through hole 201 and the third through hole 110 with an adhesive. Optionally, adhesives are filled between the first through hole 201 and the connecting shaft 4, and between the third through hole 110 and the connecting shaft 4, so that the stability of the connection of the connecting shaft 4 can be further ensured. Further, the adhesive may be, for example, UV glue.

In one embodiment, further, a side wall of the connection shaft 4 and/or a hole wall of the second through hole 301 is provided with a convex portion.

In this specific example, the arrangement of the protruding portion may make the contact between the connecting shaft 4 and the second through hole 301 be line contact or point contact instead of surface contact, which may facilitate the fitting between the connecting shaft 4 and the second through hole 301. Further, the protrusion may be an elongated protrusion or a dot protrusion.

Referring to fig. 4-6, in one embodiment, the cover plate 2 is provided with a first dispensing hole 202, and the first dispensing hole 202 is connected to the lens holder 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 holder 3, and after the first dispensing hole 202 is filled with a bonding agent, the stability of the connection between the cover plate 2 and the lens holder 3 can be improved by the bonding agent; further, the adhesive may be, for example, UV glue. Further, a third glue dispensing hole 302 may be formed in the lens support 3, the first glue dispensing hole 202 is communicated with the third glue dispensing hole 302, and the adhesive is filled in the first glue dispensing hole 202 and the third glue dispensing hole 302, so that the filling amount of the adhesive may be increased, and the reliability of the connection between the cover plate 2 and the lens support 3 may be further improved.

Referring to fig. 3, in an embodiment, the first plate 11 is provided with a second dispensing hole 111, the lens holder 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 holder 3, and after the second dispensing hole 111 is filled with a bonding agent, the stability of the connection between the housing 1 and the lens holder 3 can be improved by the bonding agent; further, the adhesive 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 to the second opening 102, and the projector 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 holder 3.

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

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

In this particular example, the lens holder 3 is adjusted by the spring 7 in cooperation with the first fastening member 6, which increases the adjustable range and improves the accuracy of the adjustment.

Referring to fig. 1-4, in one embodiment, the projector optical machine 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, 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 the second fastening member 8 is screwed into the third connection hole 203 and the second connection hole 100 to fasten the cover plate 2 and the housing 1. In the projection ray apparatus that this application embodiment provided, because the setting of connecting axle 4, even if second fastener 8 takes place to become flexible, also can rely on connecting axle 4 to ensure the steadiness that lens support 3 connects, and then ensure the steadiness of whole projection ray apparatus.

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 attached 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. 5-6, 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 specific example, the bosses 303 provided at the sides of the receiving grooves 31 can further improve the reliability of the connection between the lens 5 and the lens holder 3.

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

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes 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), the housing (1) including a first plate (11), a first opening (101) provided opposite to the first plate (11), and a second opening (102) provided adjacent to the first plate (11); the housing (1) has a housing space therein, and the housing space communicates with both the first opening (101) and the second opening (102);

the cover plate (2), 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 mode;

a lens holder (3), the lens holder (3) being disposed within the accommodation space;

the connecting shaft (4) penetrates through the cover plate (2) and the lens support (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) faces the second opening part (102).

2. The optical projection engine according to claim 1, wherein the cover plate (2) has a first through hole (201), the lens holder (3) has a second through hole (301), the first plate (11) has a third through hole (110), and the connecting shaft (4) is inserted into the first through hole (201), the second through hole (301), and the third through hole (110).

3. The light projector as claimed in claim 2, wherein the first through hole (201) and/or the third through hole (110) is filled with an adhesive.

4. The optical projection engine according to claim 2, characterized in that the side wall of the connection shaft (4) and/or the hole wall of the second through hole (301) is provided with a protruding part.

5. The optical projection engine according to claim 1, wherein the cover plate (2) is provided with a first dispensing hole (202), and the first dispensing hole (202) is connected with the lens holder (3); and the first glue dispensing hole (202) is filled with a bonding agent.

6. The optical projection engine according to claim 1, wherein the first plate (11) is provided with a second dispensing hole (111), the lens holder (3) is connected to the second dispensing hole (111), and the second dispensing hole (111) is filled with a binder.

7. The light engine of claim 1, wherein the housing (1) further comprises a second plate (12) disposed opposite the second opening (102), the 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 support (3).

8. The optical projection engine according to claim 7, further comprising a spring (7), wherein the spring (7) is sleeved outside the first fastening member (6), and the spring (7) abuts against the second plate (12).

9. The optical projection engine according to claim 1, further comprising a second fastener (8), wherein the cover plate (2) is fastened to the housing (1) by the second fastener (8).

10. 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).

11. The optical projection engine of claim 10, wherein 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).

12. An electronic device, characterized in that the electronic device comprises the projection light engine according to any one of claims 1-11.