CN216748425U

CN216748425U - Projection optical machine

Info

Publication number: CN216748425U
Application number: CN202122961065.0U
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: 2022-06-14
Anticipated expiration: 2031-11-29

Abstract

The application provides a projection optical machine, which comprises an optical machine main body, wherein the optical machine main body is provided with an optical transmission cavity, the optical machine main body is provided with a side wall, one side of the side wall, which is far away from the optical transmission cavity, is provided with a first groove, the first groove is communicated with the optical transmission cavity, and a positioning part is arranged in the first groove; a second groove is formed in one side, close to the light transmission cavity, of the intermediate piece, a collimating lens is fixedly arranged in the second groove, and the intermediate piece is installed in the first groove through a positioning part; the light source assembly is located on one side, far away from the light transmission cavity, of the middle piece, and the collimating lens can transmit light emitted by the light source assembly to the light transmission cavity. This application is through introducing the middleware in the projection ray apparatus, fixes the collimating lens on the middleware earlier, installs the middleware on the ray apparatus main part through location portion again to guarantee that the collimating lens is in preset position, reduced the installation degree of difficulty of collimating lens in the projection ray apparatus.

Description

Projection optical machine

Technical Field

The application belongs to the technical field of projection, and particularly relates to a projection light machine.

Background

With the development of micro projection technology, more and more household projection devices are in the field of vision of people, and the household projection devices are developed towards miniaturization and portability. A projector is a device that can project an image or video onto a screen by a built-in light source as a projection device. After being emitted by the light source in the projector, divergent light rays emitted by the light source are converted into parallel light rays through the collimating lens directly arranged on the projector. In order to ensure the brightness of the projector, the relative position relationship between the collimating lens and the light source is required to be high, for example, the collimating lens cannot be inclined with respect to the light source. This makes the installation of collimating lens in the projector difficult, and requires highly school to the processing of the department of installation of collimating lens on the projector.

SUMMERY OF THE UTILITY MODEL

The application aims at providing a projection machine, and solves the problem that the installation difficulty of a collimating lens in a projector is higher.

The application provides a projection ray apparatus, include:

the optical machine main body is provided with a side wall, a first groove is formed in one side of the side wall, which is far away from the optical transmission cavity, the first groove is communicated with the optical transmission cavity, and a positioning part is arranged in the first groove;

a second groove is formed in one side, close to the light transmission cavity, of the intermediate piece, a collimating lens is fixedly arranged in the second groove, and the intermediate piece is installed in the first groove through the positioning part;

the light source assembly is located on one side, far away from the light transmission cavity, of the middle piece, and the collimating lens can transmit light emitted by the light source assembly to the light transmission cavity.

Optionally, the positioning portion includes at least two positioning pillars, and all the positioning pillars are distributed at the bottom of the first groove;

the middle part is provided with positioning holes corresponding to all the positioning columns respectively, and the positioning columns are located in the corresponding positioning holes on the middle part.

Optionally, the number of the positioning columns is two, and the intermediate part is provided with two positioning holes corresponding to the two positioning columns one to one;

the middle part is of a polygonal structure, and the two positioning holes are formed in the middle part in a diagonal mode.

Optionally, a dispensing groove is formed in one side, close to the light transmission cavity, of the intermediate member, the depth of the dispensing groove is smaller than that of the second groove, the dispensing groove is close to the second groove, and the dispensing groove is communicated with the second groove.

Optionally, the number of the glue dispensing grooves is two, the two glue dispensing grooves are oppositely arranged on two sides of the second groove, and the glue dispensing grooves are semicircular.

Optionally, a third groove is formed in one side of the intermediate piece, which is far away from the optical transmission cavity, and the third groove is communicated with the second groove;

the light source module includes a light-emitting portion having a shape and a size matching those of the third groove, and the light-emitting portion is located in the third groove.

Optionally, the light source module further includes a circuit board, the light emitting portion is fixedly disposed on the circuit board, the circuit board is fixedly connected to the light machine main body through at least two connecting pieces, and all the connecting pieces are uniformly distributed around the intermediate piece.

Optionally, an avoiding hole is formed in one side of the intermediate piece, which is far away from the optical transmission cavity, and the avoiding hole penetrates through the intermediate piece.

Optionally, the edge of the middle piece has at least two notches, the notches are asymmetrically arranged on the middle piece, and the shape and the size of the middle piece are matched with those of the first groove.

Optionally, the intermediate piece is of a polygonal structure, a first notch is formed in a first side edge of the intermediate piece, a second notch and a third notch are formed in a second side edge, opposite to the first side edge, of the intermediate piece, and a protruding structure is formed between the second notch and the third notch.

The application has the technical effects that the collimating lens is fixed on the intermediate piece by introducing the intermediate piece into the projection optical machine, and then the intermediate piece is installed on the optical machine main body through the positioning part, so that the collimating lens is ensured to be in a preset position, and the installation difficulty of the collimating lens in the projection optical machine is reduced.

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 disclosure;

FIG. 2 is a perspective view of the opto-mechanical body;

FIG. 3 is a perspective view of the intermediate member;

FIG. 4 is a perspective view of a light source assembly;

fig. 5 is a schematic view of the structures of fig. 1 assembled.

Reference numerals:

1. a light machine main body; 2. an optical transmission cavity; 3. a side wall; 4. a first groove; 5. a positioning part; 6. a middleware; 7. a second groove; 8. a collimating lens; 9. a light source assembly; 91. a light emitting section; 92. a circuit board; 10. positioning holes; 11. dispensing a glue groove; 12. a third groove; 13. avoiding holes; 14. a first notch; 15. a second notch; 16. a third notch; 17. and (4) a convex structure.

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 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 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, it need not be discussed further in subsequent figures.

As shown in fig. 1 and 5, the present application provides a projection light engine, which includes a light engine main body 1, an intermediate piece 6 and a light source assembly 9. The optical machine main body 1 plays a supporting role and can support parts in the projection optical machine. The optical engine main body 1 may be a component integrally formed with a housing of the projection optical engine, or may be an independent support component disposed in the projection optical engine. The optical machine main body 1 is provided with an optical transmission cavity 2, the optical transmission cavity 2 can be an optical transmission path in the projection optical machine, so that light can be transmitted in the optical transmission path, and the normal work of the projection optical machine is ensured. The optical machine body 1 has a side wall 3, and the side wall 3 may be a side wall 3 enclosing the light transmission cavity 2. A first groove 4 is formed in one side of the side wall 3, which is far away from the light transmission cavity 2, and the first groove 4 is communicated with the light transmission cavity 2. For example, a through hole is formed at the bottom of the first groove 4, so that the sidewall 3 forms a through structure, so that the light transmission cavity 2 is communicated with the first groove 4, and light can pass through the through structure conveniently.

The first groove 4 of the side wall 3 is used for installing an intermediate piece 6, and the intermediate piece 6 is installed in the first groove 4 through the positioning part 5. As shown in fig. 2, a positioning portion 5 is provided in the first groove 4, for example, a positioning rib is extended from the side wall 3 of the first groove 4 to the center of the first groove 4, a positioning groove is provided in a corresponding portion of the intermediate member 6, the positioning rib is pushed into the first groove 4 after corresponding to the positioning groove one by one, the positioning rib is embedded into the corresponding positioning groove, and the positioning of the positioning portion 5 on the intermediate member 6 is realized.

Further, the size of the through hole formed at the bottom of the first groove 4 may be smaller than the size of the bottom of the first groove 4, so that the bottom of the first groove 4, where no through hole portion is formed, supports the intermediate member 6, and prevents the intermediate member 6 from coming off the side wall 3 and entering the light transmission cavity 2. Of course, the size of the through hole formed at the bottom of the first groove 4 may also be equal to the size of the bottom of the first groove 4, and at this time, the position of the intermediate piece 6 may be limited by the cooperation of the positioning rib and the positioning groove. For example, the positioning slot does not pass through the middle piece 6, and the positioning rib is clamped in the positioning slot to limit the position of the middle piece 6 in the first groove 4.

The intermediate member 6 serves as an intermediate member for mounting the collimating lens 8 on the carriage body 1. A second groove 7 is formed in one side, close to the light transmission cavity 2, of the intermediate piece 6, and a collimating lens 8 is fixedly arranged in the second groove 7. The shape and size of the second groove 7 can be matched with the shape and size of the collimating lens 8. Wherein the collimating lens 8 can be fixedly arranged in said second groove 7 by gluing. Further, when the collimating lens 8 is installed on the optical machine main body 1, the middle part of the collimating lens 8 may be opposite to the through hole formed at the bottom of the first groove 4 of the optical machine main body 1, so as to ensure the smoothness of the light path.

The light source assembly 9 can provide projected light for a projector. The light source assembly 9 is located on one side of the intermediate piece 6 away from the light transmission cavity 2, and the collimating lens 8 can transmit the light emitted by the light source assembly 9 to the light transmission cavity 2. For example, a light through hole is formed at the bottom of the second groove 7 of the intermediate member 6, the light emitted by the light source assembly 9 enters the collimating lens 8 through the light through hole, and the collimating lens 8 projects the received light to the light transmission path through the through hole formed at the bottom of the first groove 4.

This application is through introducing middleware 6 in the projection ray apparatus, fixes collimating lens 8 on middleware 6 earlier, installs on ray apparatus main part 1 through location portion 5 middleware 6 again to guarantee that collimating lens 8 locates in preset position, compare in directly installing collimating lens 8 on ray apparatus main part 1, reduced the installation degree of difficulty of collimating lens 8 in the projection ray apparatus. For example, in the prior art, the collimating lens 8 is directly installed on the optical machine body 1, and due to the reason that the collimating lens 8 is not convenient to be positioned before being fixed, the collimating lens 8 that is installed may be inclined with respect to the light source, which may affect the imaging effect of the projection optical machine. And in this application, can conveniently fixed mounting with collimating lens on middleware 6, then set up middleware 6 in first recess 4 through setting up location portion 5 in first recess 4, guaranteed collimating lens 8's mounted position to the installation degree of difficulty of collimating lens 8 on ray apparatus main part 1 has been reduced.

Simultaneously, this application can reduce the processing requirement of the installation department of collimating lens 8 on ray apparatus main part 1, makes ray apparatus main part 1 make easily. For example, in the prior art, the collimating lens 8 needs to be directly mounted on the optical machine main body 1, and the mounting lens position on the optical machine main body 1 necessarily has higher processing precision, so as to ensure the position of the collimating lens 8, which increases the manufacturing difficulty of the optical machine main body 1. In the application, the intermediate part 6 and the optical machine main body 1 are positioned, so that the requirement of the optical machine main body 1 on the processing precision is greatly reduced.

Optionally, the positioning portion 5 includes at least two positioning pillars, and all the positioning pillars are distributed at the bottom of the first groove 4. That is to say, the bottom of the first groove 4 has a through hole with a smaller size than that of the bottom of the first groove 4, and the positioning column is disposed at a part of the bottom of the first groove 4 where no through hole is opened. The intermediate part 6 is provided with positioning holes 10 corresponding to all the positioning columns respectively, and the positioning columns are located in the corresponding positioning holes 10 on the intermediate part 6. That is, when installing, the positioning holes 10 of the intermediate member 6 can be aligned with the corresponding positioning posts, and the intermediate member 6 is pushed so that the intermediate member 6 is sleeved on the positioning posts through the positioning holes 10. The number of the combination of the positioning columns and the positioning holes 10 is at least two, so that the position of the intermediate piece 6 in the first groove 4 can be reliably defined.

Specifically, the quantity of reference column is two, have two locating holes 10 with two reference column one-to-one on the intermediate member 6, the quantity phase-match of reference column and locating hole 10, and its quantity is two respectively, can also be reliable guarantee the position of intermediate member 6 in first recess 4 on ray apparatus main part 1 under the circumstances of guaranteeing simple structure. The middle part 6 is of a polygonal structure, and the two positioning holes 10 are diagonally arranged on the middle part 6, so that the positioning of the middle part 6 is more reliable.

Optionally, as shown in fig. 3, a dispensing groove 11 is formed in one side of the intermediate member 6 close to the light transmission cavity 2, a depth of the dispensing groove 11 is smaller than a depth of the second groove 7, the dispensing groove 11 is adjacent to the second groove 7, and the dispensing groove 11 is communicated with the second groove 7. The glue dispensing groove 11 is used for accommodating glue when the collimating lens 8 is fixed, and enables the collimating lens 8 to be fixedly connected with the second groove 7 through the glue on the surface where the collimating lens 8 and the second groove 7 are connected in the glue flow direction. The glue dispensing groove 11 can retain part of glue for bonding, and due to the structural characteristics between the glue dispensing groove 11 and the second groove 7, when the glue is fluid, the glue can continuously flow into the surface of the collimating lens 8 contacted with the second groove 7, so that a larger bonding surface is ensured between the collimating lens 8 and the second groove 7, and the collimating lens 8 and the second groove 7 are reliably connected.

Specifically, the number of the glue dispensing grooves 11 is two, and the two glue dispensing grooves 11 are oppositely arranged on two sides of the second groove 7, so that the part for fixing the collimating lens 8 is symmetrical relative to the collimating lens 8, the collimating lens 8 is uniformly stressed, and the collimating lens 8 is favorably and reliably fixed in the second groove 7. And the shape of the dispensing groove 11 is semicircular, so that dispensing in the dispensing groove 11 is convenient.

Optionally, as shown in fig. 4, a third groove 12 is formed on one side of the intermediate member 6 away from the light transmission cavity 2, and the third groove 12 is communicated with the second groove 7. That is, a second groove 7 and a third groove 12 are respectively formed on both sides of the intermediate member 6, and the second groove 7 and the third groove 12 are opened to form a through structure in the intermediate member 6. The light source assembly 9 includes a light-emitting portion 91, the shape and size of the light-emitting portion 91 are adapted to the shape and size of the third groove 12, and the light-emitting portion 91 is located in the third groove 12. That is, the light-emitting portion 91 of the light source module 9 can be inserted into the third recess 12, and the relative position between the light-emitting portion 91 and the intermediate member 6 is fixed. Because the collimating lens is fixedly arranged in the second groove 7 of the middle piece 6 and the light-emitting part 91 is arranged in the third groove 12 of the middle piece 6, the relative position relationship between the collimating lens and the light-emitting source is fixed, and the quality of the light source is ensured. The light emitting unit 91 may be an LED lamp.

Optionally, the light source assembly 9 further includes a circuit board 92, the light emitting portion 91 is fixedly disposed on the circuit board 92, and the circuit board 92 is fixedly connected to the optical engine main body 1 through at least two connectors, that is, the intermediate member 6 is reliably sandwiched between the circuit board 92 and the optical engine main body 1, so as to ensure the reliability of the position of the intermediate member 6. All the connecting pieces are uniformly distributed around the middle piece 6, so that the reliability of fixing the position of the middle piece 6 can be further ensured.

Optionally, an avoiding hole 13 is formed in one side of the intermediate piece 6, which is far away from the light transmission cavity 2, and the avoiding hole 13 penetrates through the intermediate piece 6. The avoiding hole 13 is used for avoiding other parts on the light source assembly 9, so that the assembly between the light source assembly 9 and the middle part 6 can be ensured, the use of materials can be reduced, and the purposes of energy conservation and environmental protection are achieved.

Optionally, the edge of the middle piece 6 has at least two notches, the notches are asymmetrically arranged on the middle piece 6, and the shape and the size of the middle piece 6 are matched with those of the first groove 4. The notch formed in the intermediate member 6 in the present embodiment can prevent the intermediate member 6 from being assembled in a misaligned state, for example, the intermediate member 6 can be prevented from being reversely assembled.

Specifically, the middle part 6 is a polygonal structure, a first notch 14 is formed in a first side edge of the middle part 6, a second notch 15 and a third notch 16 are formed in a second side edge, opposite to the first side edge, of the middle part 6, and a protruding structure 17 is formed between the second notch 15 and the third notch 16. The structure on the edge of the middle part 6 is convenient to identify, so that an installer can easily distinguish the front side and the back side of the middle part 6. Wherein, the intermediate member 6 is polygonal, which facilitates processing. Of course, the intermediate member 6 may have other structures such as a circular shape, and the edge of the intermediate member 6 may be provided with other notches or other protrusions.

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 can 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:

2. The optical projection engine of claim 1, wherein the positioning portion comprises at least two positioning posts, and all the positioning posts are distributed at the bottom of the first groove;

3. The optical projection engine according to claim 2, wherein the number of the positioning posts is two, and the intermediate member has two positioning holes corresponding to the two positioning posts one to one;

the middle part is of a polygonal structure, and the two positioning holes are diagonally arranged on the middle part.

4. The light engine of claim 1, wherein a dispensing slot is formed in the intermediate member on a side thereof adjacent to the light transmission cavity, wherein a depth of the dispensing slot is less than a depth of the second groove, the dispensing slot is adjacent to the second groove, and the dispensing slot is in communication with the second groove.

5. The light engine of claim 4, wherein the number of the dispensing grooves is two, the two dispensing grooves are oppositely arranged on two sides of the second groove, and the dispensing grooves are semicircular.

6. The optical projection engine according to claim 1, wherein a third groove is formed on a side of the intermediate member away from the light transmission cavity, and the third groove is communicated with the second groove;

the light source component comprises a light emitting part, the shape and the size of the light emitting part are matched with those of the third groove, and the light emitting part is located in the third groove.

7. The light engine of claim 6, wherein the light source module further comprises a circuit board, the light-emitting portion is fixed on the circuit board, the circuit board is fixedly connected to the light engine main body by at least two connectors, and all the connectors are uniformly distributed around the intermediate member.

8. The projection optical engine of claim 1, wherein an avoiding hole is formed in a side of the intermediate member away from the light transmission cavity, and the avoiding hole penetrates through the intermediate member.

9. The light engine of claim 1, wherein the edge of the middle piece has at least two notches, the notches are asymmetrically arranged on the middle piece, and the shape and the size of the middle piece are matched with those of the first groove.

10. The optical projection engine according to claim 9, wherein the intermediate member has a polygonal structure, a first notch is formed on a first side edge of the intermediate member, a second notch and a third notch are formed on a second side edge of the intermediate member opposite to the first side edge, and a protrusion structure is formed between the second notch and the third notch.