CN114236953A

CN114236953A - Projection device

Info

Publication number: CN114236953A
Application number: CN202111436440.8A
Authority: CN
Inventors: 张强; 尹群; 陶淑林
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-03-25

Abstract

The embodiment of the application discloses a projection device, which comprises a light machine main body, a lens assembly, a fastener and a spring; the optical machine main body is provided with a first mounting surface, and a first through hole is formed in the first mounting surface; the lens assembly is detachably connected with the optical machine main body; the lens assembly is provided with a second mounting surface, and a second through hole is formed in the second mounting surface; the maximum width of the cross section of the fastener is smaller than the minimum aperture of the cross section of the second through hole, and the fastener can move in the second through hole. The technical effect of the embodiment of the application lies in that structural design is reasonable, can adjust the position of lens subassembly for the ray apparatus main part effectively, has reduced the equipment error, has improved the picture quality of projected image.

Description

Projection device

Technical Field

The application belongs to the technical field of electronic products, and particularly relates to a projection device.

Background

With the development of projection technology, the development direction of projectors has gradually advanced toward miniaturization and portability, and thus miniature projectors have been produced. The micro projector is closer to life and entertainment, the working principle of the micro projector is that light is emitted by a light source, the light of the light source is uniformly irradiated onto a display chip through a series of optical lighting systems, signals pass through a circuit system to realize color gradation and gray scale on the display chip to display images, and then the images on the display chip are magnified and projected onto a corresponding screen through a projection lens at the front end of the projector.

The prior micro projector adopts a structure that an illumination system is separated from a lens system, and the illumination system and the lens system are locked by screws during assembly. However, since the lens of the illumination system and the lens of the lens system are easily assembled with each other, the assembled micro-projector often has the phenomena of poor analysis and deviation of the projected image, and is very inconvenient to use.

Disclosure of Invention

An object of the embodiments of the present application is to provide a new technical solution for a projection apparatus.

According to an embodiment of the present application, there is provided a projection apparatus including:

the optical machine comprises an optical machine main body, a first positioning device and a second positioning device, wherein the optical machine main body is provided with a first mounting surface, and the first mounting surface is provided with a first through hole;

the lens assembly is detachably connected with the optical machine main body; the lens assembly is provided with a second mounting surface, and a second through hole is formed in the second mounting surface;

a fastener having a cross-section with a maximum width less than a minimum aperture of a cross-section of the second through-hole, the fastener being movable in the second through-hole;

a spring disposed in a compressed state between the first mounting surface and the second mounting surface;

the first mounting surface is opposite to the second mounting surface, and the fastener sequentially penetrates through the first through hole, the spring and the second through hole to fix the lens assembly on the optical machine main body;

when the fastener is loosened, the lens assembly moves relative to the optical engine body based on the elastic force of the spring.

Optionally, an annular protrusion is arranged on the first mounting surface, and a first through hole is arranged on the annular protrusion;

the second mounting surface is provided with a groove for accommodating the annular bulge, and a second through hole is formed in the groove.

Optionally, one end of the spring abuts against the annular protrusion, and the other end abuts against the groove.

Optionally, a first lens is disposed on the optical machine body, and a second lens is disposed on the lens assembly;

when the lens assembly is fixed to the optical machine main body, the lens assembly moves relative to the optical machine main body, so that the first lens is opposite to the second lens.

Optionally, the second through hole is a kidney-shaped hole.

Optionally, the first mounting surface includes a plurality of corners, each corner is provided with the first through hole, and each first through hole is provided with one corresponding second mounting hole.

Optionally, the first mounting surface and the second mounting surface are both rounded rectangles, and a first through hole is formed in each of four corners of the first mounting surface; and a second through hole is formed in each of four corners of the second mounting surface.

Optionally, the method further comprises:

the foam is arranged between the first mounting surface and the second mounting surface.

Optionally, a notch corresponding to the groove is formed in the foam, and the fastener penetrates through the first through hole, the notch and the second through hole in sequence.

Optionally, the fastener includes a screw and a nut rotatably coupled to the screw for loosening the fastener by rotating the nut.

One technical effect of the embodiment of the application is as follows:

the lens assembly can be firmly fixed on the optical machine main body through the fastener, and the operation is very convenient. Simultaneously, also can be through relaxing the fastener for the lens subassembly removes for the ray apparatus main part, so that the position of lens subassembly and ray apparatus subassembly is corresponding, then fastens the lens subassembly again, thereby can avoid or reduce the equipment error between lens subassembly and the ray apparatus main part effectively, and then makes the projection image reach the best, in order to promote user's visual experience.

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 schematic view of a projection apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic view of an assembly structure of a projection apparatus according to an embodiment of the present disclosure;

fig. 3 is a schematic view of a lens assembly of a projection apparatus according to an embodiment of the present disclosure.

In the figure: 1. a light machine main body; 11. a first mounting surface; 12. a first through hole; 13. an annular projection; 2. a lens assembly; 21. a second mounting surface; 22. a second through hole; 23. a groove; 3. a fastener; 31. a screw; 32. a nut; 4. a spring; 5. soaking cotton; 51. and (4) a notch.

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.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 to fig. 3, the present embodiment provides a projection apparatus, which may be applied to daily life, commercial activities, teaching activities, and other activities, and the application of the projection apparatus is not limited in the present application.

Specifically, the projection apparatus includes a carriage body 1, a lens assembly 2, a fastener 3, and a spring 4. The fastener 3 is used for firmly locking the lens assembly 2 on the optical machine body 1.

More specifically, the optical engine main body 1 has a first mounting surface 11, and the first mounting surface 11 is provided with a first through hole 12. Wherein the first through hole 12 is for passing the fastening member 3.

The lens assembly 2 is detachably connected with the optical machine body 1, so that the lens assembly 2 and the optical machine body 1 can be quickly assembled together, and the position of the lens assembly 2 relative to the optical machine body 1 can be conveniently adjusted. The lens assembly 2 has a second mounting surface 21, and a second through hole 22 is formed in the second mounting surface 21. Wherein the second through hole 22 is used for the fastener 3 to pass through.

The maximum width of the cross section of the fastener 3 is smaller than the minimum aperture of the cross section of the second through hole 22, the fastener 3 can move in the second through hole 22, so that the position of the lens assembly 2 relative to the optical machine body 1 can be adjusted without detaching the lens assembly 2 from the optical machine body 1, and the assembling accuracy of the lens assembly 2 and the optical machine body 1 is well guaranteed. The spring 4 is disposed in a compressed state between the first mounting surface 11 and the second mounting surface 21.

The first mounting surface 11 is opposite to the second mounting surface 21, and the fastener 3 sequentially passes through the first through hole 12, the spring 4 and the second through hole 22 to fix the lens assembly 2 to the optical machine body 1; when loosening fastener 3, lens subassembly 2 based on the elasticity of spring 4 for light machine main part 1 removes, when adjusting the position of lens subassembly 2 to accurate position, fastens fastener 3 once more to firmly fix lens subassembly 2 on light machine main part 1, guaranteed simultaneously that projection image of projection arrangement has higher quality. The spring 4 enables the lens assembly 2 to move accurately with respect to the carriage body 1, thereby facilitating accurate adjustment of the position of the lens assembly 2.

In this embodiment, the lens assembly 2 can be firmly fixed to the optical engine body 1 by the fastener 3, and the operation is very convenient. Simultaneously, also can be through loosening fastener 3 for lens subassembly 2 removes for ray apparatus main part 1, so that lens subassembly 2 and ray apparatus subassembly's position is corresponding, then fastens lens subassembly 2 again, thereby can avoid or reduce the equipment error between lens subassembly 2 and ray apparatus main part 1 effectively, and then makes the projection image reach the best, in order to promote user's visual experience.

Optionally, an annular protrusion 13 is disposed on the first mounting surface 11, and a first through hole 12 is disposed on the annular protrusion 13;

the second mounting surface 21 is provided with a groove 23 for accommodating the annular protrusion 13, and a second through hole 22 is provided in the groove 23.

In the above embodiment, when the lens assembly 2 is assembled to the optical engine main body 1, the annular protrusion 13 and the groove 23 are engaged, so that the position where the lens assembly 2 is mounted to the optical engine main body 1 can be preliminarily determined, which facilitates to quickly assemble the lens assembly 2 on the optical engine main body 1.

Alternatively, one end of the spring 4 abuts against the annular protrusion 13 and the other end abuts against the groove 23.

In the above embodiment, the annular protrusion 13 can quickly position the position of the spring 4, which is convenient for realizing accurate installation of the spring 4; simultaneously, when firmly fixing lens subassembly 2 on ray apparatus main part 1, spring 4 that is compression state helps promoting lens subassembly 2 and is the trend to keeping away from ray apparatus main part 1 motion to help avoiding lens subassembly 2 to rock for ray apparatus main part 1, help guaranteeing projection quality.

Optionally, a first lens is disposed on the optical machine main body 1, and a second lens is disposed on the lens assembly 2;

when the lens assembly 2 is fixed to the optical engine main body 1, the lens assembly 2 moves relative to the optical engine main body 1, so that the first lens is opposite to the second lens.

In the above embodiment, the first lens and the second lens are opposite, so that the projected image is optimal, and the visual experience of the user is improved.

Optionally, the second through hole 22 is a kidney-shaped hole. This enables the fastener 3 to move in the second through-hole 22 when adjusting the relative positional relationship of the lens assembly 2 and the optical engine body 1, thereby facilitating adjustment of the lens assembly 2.

Optionally, the first mounting surface 11 includes a plurality of corners, each corner is provided with the first through hole 12, and each first through hole 12 is provided with one corresponding second mounting hole.

In the above embodiment, the lens assembly 2 is firmly mounted on the optical engine body 1 by the plurality of fasteners 3 penetrating through each pair of corresponding first through holes 12 and second through holes 22, respectively, and at the same time, the lens assembly 2 can move more stably during the adjustment process by the cooperation of the plurality of through holes and the plurality of fasteners 3.

Optionally, the first mounting surface 11 and the second mounting surface 21 are both rounded rectangles, and one first through hole 12 is disposed at each of four corners of the first mounting surface 11; one second through-hole 22 is provided at each of four corners of the second mounting surface 21.

In the above embodiment, the lens assembly 2 can be firmly mounted on the carriage body 1, and at the same time, the operation of adjusting the lens assembly 2 is very simple.

Optionally, the projection apparatus further comprises:

and the foam 5 is arranged between the first mounting surface 11 and the second mounting surface 21. This helps to prevent light leakage from the projection apparatus and to ensure the projection quality, since the sealing between the optical main body 1 and the lens assembly 2 is ensured.

Optionally, a notch 51 corresponding to the groove 23 is provided on the foam 5, and the fastener 3 is sequentially inserted through the first through hole 12, the notch 51, and the second through hole 22. This makes the bubble cotton 5 can firmly set up between ray apparatus main part 1 and lens module, helps further improving the leakproofness between ray apparatus main part 1 and the lens module.

Optionally, the fastener 3 comprises a screw 31 and a nut 32, which is rotatably connected to the screw 31, by rotating the nut 32 to loosen the fastener 3. This makes it possible for the fastener 3 not only to securely lock the lens body and the optomechanical body 1 but also to facilitate loosening of the fastener 3 to adjust the position of the lens assembly 2, which is very simple in operation.

The projection arrangement that this application embodiment provided, structural design is reasonable, can adjust the position of lens subassembly 2 for ray apparatus main part 1 effectively, has reduced the equipment error, has improved the picture quality of projected image.

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 device, comprising:

the optical machine comprises an optical machine body (1), wherein the optical machine body (1) is provided with a first mounting surface (11), and a first through hole (12) is formed in the first mounting surface (11);

the lens assembly (2), the lens assembly (2) and the optical machine main body (1) are detachably connected; the lens assembly (2) is provided with a second mounting surface (21), and a second through hole (22) is formed in the second mounting surface (21);

a fastener (3), the maximum width of the cross section of the fastener (3) is smaller than the minimum aperture of the cross section of the second through hole (22), and the fastener (3) can move in the second through hole (22);

a spring (4), the spring (4) being disposed in a compressed state between the first mounting surface (11) and the second mounting surface (21);

the first mounting surface (11) is opposite to the second mounting surface (21), and the fastener (3) passes through the first through hole (12), the spring (4) and the second through hole (22) in sequence to fix the lens assembly (2) to the optical machine body (1);

when the fastener (3) is loosened, the lens assembly (2) moves relative to the optical machine body (1) based on the elastic force of the spring (4).

2. A projection device according to claim 1, wherein the first mounting surface (11) is provided with an annular protrusion (13), the annular protrusion (13) being provided with a first through hole (12);

the second mounting surface (21) is provided with a groove (23) for accommodating the annular protrusion (13), and a second through hole (22) is formed in the groove (23).

3. Projection device according to claim 2, wherein one end of the spring (4) abuts the annular projection (13) and the other end abuts the recess (23).

4. The projection device according to claim 1, wherein the optical engine body (1) is provided with a first lens, and the lens assembly (2) is provided with a second lens;

when the lens assembly (2) is fixed to the optical machine main body (1), the lens assembly (2) moves relative to the optical machine main body (1) so that the first lens is opposite to the second lens.

5. The projection device according to claim 1, wherein the second through-hole (22) is a kidney-shaped hole.

6. A projection device according to claim 1, wherein the first mounting surface (11) comprises a plurality of corners, each corner being provided with the first through hole (12), each first through hole (12) being provided with one of the second mounting holes.

7. A projection device according to claim 1, wherein the first mounting surface (11) and the second mounting surface (21) are rounded rectangles, one first through hole (12) being provided at each of four corners of the first mounting surface (11); one second through-hole (22) is provided at each of four corners of the second mounting surface (21).

8. The projection device of claim 2, further comprising:

the foam (5) is arranged between the first mounting surface (11) and the second mounting surface (21).

9. The projection device according to claim 8, wherein a notch (51) corresponding to the groove (23) is formed in the foam (5), and the fastener (3) is sequentially inserted into the first through hole (12), the notch (51) and the second through hole (22).

10. Projection device according to claim 1, characterized in that said fastening element (3) comprises a screw (31) and a nut (32) rotatably connected to said screw (31) for loosening said fastening element (3) by rotating said nut (32).