CN219328971U

CN219328971U - Optical module and projection device

Info

Publication number: CN219328971U
Application number: CN202223202471.XU
Authority: CN
Inventors: 宋乐乐; 江浩; 王成伟; 王雨尧
Original assignee: Formovie Chongqing Innovative Technology Co Ltd
Current assignee: Formovie Chongqing Innovative Technology Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-07-11
Anticipated expiration: 2032-11-30

Abstract

The application relates to an optical module and projection equipment, projection equipment includes projection ray apparatus and optical module, optical module is used for installing to in the projection ray apparatus. The optical module comprises a lens and a fixing bracket. The lens is provided with a first mirror surface and a second mirror surface which are oppositely arranged along the thickness direction; the fixed bolster has first terminal surface and the second terminal surface that set up in opposite directions along thickness direction, first terminal surface is formed with and is used for holding the first holding tank of lens, first holding tank periphery is equipped with first elasticity joint portion and first spacing portion, first elasticity joint portion is used for keeping away from under the exogenic action first holding tank's direction elastic deformation is in order to make the lens pack into first holding tank, first elasticity joint portion can the elasticity reset under natural state and the butt to first mirror surface, first spacing portion is used for the butt to first mirror surface, the second mirror surface orientation first holding tank.

Description

Optical module and projection device

Technical Field

The present utility model relates to the field of projection technologies, and in particular, to an optical module and a projection device.

Background

A projector is a device that projects images or videos onto a curtain or wall, and is widely used in homes, offices, schools, entertainment venues, etc.

However, the conventional projector is complicated in structure and difficult to disassemble and assemble, and meanwhile, the lens is a fragile object, so that the lens is fragile in the process of disassembling and assembling the lens.

Disclosure of Invention

Accordingly, it is necessary to provide an optical module and a projection apparatus for solving the above problems.

An optical module, comprising:

the lens is provided with a first mirror surface and a second mirror surface which are arranged oppositely along the thickness direction; and

The fixed bolster has the first terminal surface and the second terminal surface that set up in opposite directions along thickness direction, first terminal surface is formed with and is used for holding the first holding tank of lens, first holding tank periphery is equipped with first elasticity joint portion and first spacing portion, first elasticity joint portion is used for keeping away from under the exogenic action first holding tank's direction elastic deformation so that the lens is packed into first holding tank, first elasticity joint portion can the elasticity reset under natural state and the butt to first mirror surface, first spacing portion is used for the butt to first mirror surface, the second mirror surface orientation the diapire of first holding tank.

Above-mentioned optical module, when will pack into the first holding tank of the first terminal surface of fixed bolster with the lens, can operate first elasticity joint portion elastic deformation and keep away from first holding tank, provide sufficient space for pack into of lens, avoid producing the interference at installation in-process first elasticity joint portion and lens to prevent that the lens from damaging. The first mirror surface of lens can be in the first holding tank to make the second mirror surface of lens towards the diapire of first holding tank, when the first mirror surface butt of lens in first spacing portion, can no longer operate first elasticity joint portion, make first elasticity joint portion be in natural state, it does not receive the external force effect can automatic re-setting and butt to the first mirror surface of lens, first elasticity joint portion and the equal butt of first spacing portion in the first mirror surface of lens can prevent that the lens from deviating from in the first holding tank.

In one embodiment, one end of the first elastic clamping portion is connected with the fixing support, the other end of the first elastic clamping portion is a free end, and the free end of the first elastic clamping portion is at least partially abutted to the first mirror surface in a natural state. The free end of the first elastic clamping part can elastically deform under the action of external force and is far away from the first accommodating groove, so that the lens is put into the accommodating groove for position avoidance.

In one embodiment, the first limiting portion and the first elastic clamping portion are located at two opposite sides of the first accommodating groove, and the first limiting portion and the first elastic clamping portion are abutted to the first mirror surface of the lens from two opposite side edges of the lens;

or, the first limiting part and the first elastic clamping part are positioned at two non-opposite sides of the first accommodating groove, and the first limiting part and the first elastic clamping part are abutted to the first mirror surface of the lens from two non-opposite sides of the lens.

In one embodiment, the optical module further includes a liquid crystal screen, the liquid crystal screen has a first panel and a second panel that are disposed opposite to each other along a thickness direction, the second end surface is formed with a second accommodating groove for accommodating the liquid crystal screen, a second elastic clamping portion and a second limiting portion are disposed at a periphery of the second accommodating groove, the second elastic clamping portion is used for elastically deforming in a direction away from the second accommodating groove under an external force to enable the liquid crystal screen to be installed in the second accommodating groove, the second elastic clamping portion can elastically reset and abut against the first panel in a natural state, the second limiting portion is used for abutting against the first panel, and the second panel faces a bottom wall of the second accommodating groove.

When the liquid crystal screen is to be installed in the second accommodating groove of the second end face of the fixing support, the second elastic clamping part can be operated to elastically deform away from the second accommodating groove, enough space is provided for installation of the liquid crystal screen, interference between the second elastic clamping part and the liquid crystal screen in the installation process is avoided, and accordingly damage to the liquid crystal screen is prevented. The liquid crystal display can be placed in the second accommodating groove, the second panel of the liquid crystal display faces the bottom wall of the second accommodating groove, when the first panel of the liquid crystal display is abutted against the second limiting part, the second elastic clamping part can be not operated any more, the second elastic clamping part is in a natural state, the second elastic clamping part can be automatically reset and abutted against the first panel of the liquid crystal display without being influenced by external force, the second elastic clamping part and the second limiting part are abutted against the first panel of the liquid crystal display, and the liquid crystal display can be prevented from being separated from the second accommodating groove.

In one embodiment, one end of the second elastic clamping portion is connected with the fixing bracket, the other end of the second elastic clamping portion is a free end, and the free end of the second elastic clamping portion is at least partially abutted to the first screen in a natural state. The free end of the second elastic clamping part can elastically deform under the action of external force and is far away from the second accommodating groove, so that the position of the liquid crystal screen is avoided when the liquid crystal screen is installed.

In one embodiment, the second limiting portion and the second elastic clamping portion are located at two non-opposite sides of the second accommodating groove, and the second limiting portion and the second elastic clamping portion are abutted to the first panel of the liquid crystal screen from two non-opposite sides of the liquid crystal screen.

In one embodiment, the second limiting portion and the second elastic clamping portion are located at two opposite sides of the second accommodating groove, and the second limiting portion and the second elastic clamping portion are abutted to the first panel of the liquid crystal screen from two opposite side edges of the liquid crystal screen.

The application also relates to a projection device, which comprises a projection light machine and the optical module set in any embodiment, wherein the optical module set is used for being installed in the projection light machine.

The projection device may be provided with the optical module described in each of the embodiments in the projection optical engine, and therefore, the projection device also includes at least the following advantages: when the lens is to be installed into the first accommodating groove of the first end face of the fixing support, the first elastic clamping part can be operated to elastically deform away from the first accommodating groove, enough space is provided for installing the lens, interference between the first elastic clamping part and the lens in the installation process is avoided, and therefore damage to the lens is prevented. Can put into first holding tank with the lens to make the second mirror surface of lens towards the diapire of first holding tank, when the first mirror surface butt of lens in first spacing below, can no longer operate first elasticity joint portion, make first elasticity joint portion be in natural state, it does not receive the external force effect can automatic re-setting and butt to the first mirror surface of lens, first elasticity joint portion and the equal butt of first spacing portion in the first mirror surface of lens can prevent that the lens from deviating from in the first holding tank.

In one embodiment, the projection light machine includes a housing, a slot is formed in the housing, and the optical module is inserted into the slot.

In one embodiment, two opposite side walls of the fixing support are provided with clamping convex ribs, clamping grooves for inserting the clamping convex ribs are formed in two opposite sides of the slot of the shell, and the shell is matched with the clamping convex ribs through the clamping grooves to fix the fixing support.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is an exploded view of an optical module according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an optical module according to an embodiment of the present utility model;

FIG. 3 is a side view of one embodiment of a lens-bearing side of a mounting bracket according to the present utility model;

FIG. 4 is a perspective view showing the structure of a fixing bracket according to an embodiment of the present utility model;

FIG. 5 is a side view of a side of a mounting bracket with a liquid crystal display according to one embodiment of the present utility model;

FIG. 6 is a perspective view of a further structure of a fixing bracket according to an embodiment of the present utility model;

FIG. 7 is a perspective view of a further structure of a fixing bracket according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a projection light engine and an optical module according to an embodiment of the present utility model;

FIG. 9 is a further cross-sectional view of an optical module according to one embodiment of the present utility model;

fig. 10 is a cross-sectional view of an optical module according to an embodiment of the present utility model incorporated in a projection light engine.

Reference numerals:

10. an optical module; 100. a lens; 110. a first mirror; 120. a second mirror; 200. a fixed bracket; 210. a first end face; 211. a first accommodation groove; 2111. a first side; 2112. a second side; 2113. a third side; 2114. a fourth side; 212. a first limit part; 213. a first elastic clamping part; 220. a second end face; 221. a second accommodation groove; 222. a second limit part; 223. a second elastic clamping part; 230. a vent hole; 240. clamping the convex ribs; 300. a liquid crystal panel; 310. a first panel; 320. a second panel; 20. a projection light machine; 21. a housing; 22. a slot; 23. and a clamping groove.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Referring to fig. 1, 2, 3 and 4, the present utility model provides an optical module 10, which includes a lens 100 and a fixing bracket 200. The lens 100 has a first mirror surface 110 and a second mirror surface 120 disposed opposite to each other in a thickness direction. The fixing bracket 200 has a first end surface 210 and a second end surface 220 disposed opposite to each other in the thickness direction, and the fixing bracket 200 further has an optical path passage penetrating through the first end surface 210 and the second end surface 220 in the thickness direction. The first end surface 210 of the fixing bracket 200 is formed with a first receiving groove 211 for receiving the lens 100. The periphery of the first accommodating groove 211 is provided with a first elastic clamping part 213 and a first limiting part 212, the first elastic clamping part 213 is used for elastically deforming along a direction away from the first accommodating groove 211 under the action of external force so that the lens 100 is arranged in the first accommodating groove 211, the first elastic clamping part 213 can elastically reset and abut against the first mirror surface 110 in a natural state, the first limiting part 212 is used for abutting against the first mirror surface 110 of the lens 100, and the second mirror surface 120 of the lens 100 faces the bottom wall of the first accommodating groove 211. The natural state of the first elastic engagement portion 213 can be regarded as a state when it is not subjected to an external force.

In the above-mentioned optical module 10, when the lens 100 is to be mounted into the first accommodating groove 211 of the first end surface 210 of the fixing bracket 200, the first elastic clamping portion 213 can be operated to elastically deform away from the first accommodating groove 211, so as to provide enough space for mounting the lens 100, and avoid interference between the first elastic clamping portion 213 and the lens 100 during mounting, thereby preventing damage to the lens 100. The lens 100 may be placed in the first accommodating groove 211, and the second mirror 120 of the lens 100 faces the bottom wall of the first accommodating groove 211, that is, the second mirror 120 of the lens 100 faces the second end surface 220, when the first mirror 110 of the lens 100 abuts against the first limiting portion 212, the first elastic clamping portion 213 may not be operated any more, the first elastic clamping portion 213 may be in a natural state, and may be automatically reset and abut against the first mirror 110 of the lens 100 without being affected by an external force, and both the first elastic clamping portion 213 and the first limiting portion 212 abut against the first mirror 110 of the lens 100, so as to prevent the lens 100 from being removed from the first accommodating groove 211. In addition, when the lens 100 is mounted in the first accommodating groove 211, the side edge of the first accommodating groove 211 can abut against the periphery of the lens 100 to limit, so as to prevent the lens 100 from moving along the direction parallel to the mirror surface.

Specifically, as shown in fig. 4, in some embodiments, one end of the first elastic clamping portion 213 is connected to the fixing bracket 200, the other end of the first elastic clamping portion 213 is a free end, and the free end of the first elastic clamping portion 213 is at least partially abutted to the first mirror 110 in a natural state. The free end of the first elastic clamping portion 213 can elastically deform under the action of an external force and is far away from the first accommodating groove 211, so as to avoid the lens 100 from being installed.

Specifically, the free end of the first elastic clamping portion 213 is disposed on one side of the first mirror surface 110 of the lens 100, and the first limiting protrusion is used for abutting against the first mirror surface 110 to limit the lens 110 between the bottom wall of the first accommodating groove 211 and the first limiting protrusion in the thickness direction.

More specifically, in some embodiments, the first elastic clamping portion 213 may be integrally formed with the fixing bracket 200. In other embodiments, the end of the first elastic locking portion 213 for connecting to the fixing bracket 200 may be connected to the fixing bracket 200 by bonding, ultrasonic welding, or the like.

More specifically, in some embodiments, the first stopper 212 may be integrally formed with the fixing bracket 200. In other embodiments, the end of the first limiting portion 212 for connecting to the fixing bracket 200 may be connected to the fixing bracket 200 by bonding, ultrasonic welding, or the like.

The distribution manner of the first limiting portion 212 and the first elastic clamping portion 213 at the periphery of the first accommodating groove 211 may be various.

For example, as shown in fig. 3 and 4, in some embodiments, the first limiting portion 212 and the first elastic clamping portion 213 are located on two non-opposite sides of the first accommodating groove 211, and the first limiting portion 212 and the first elastic clamping portion 213 are abutted to the first mirror surface 110 of the lens 100 from two non-opposite sides of the lens 100.

Specifically, in the embodiment shown in fig. 3 and 4, the lens 100 is substantially rectangular, and the first receiving groove 211 is adapted to the lens 100, and the shape of the first receiving groove 211 is also substantially rectangular, that is, the first receiving groove 211 has four first side 2111, second side 2112, third side 2113, and fourth side 2114 connected in sequence. The side adjacent to the first side 2111 may be considered the second side 2112. The first limiting portion 212 is located at the first side 2111, and the first elastic clamping portion 213 is located at the second side 2112 or the fourth side 2114. Such a structural arrangement is considered that the first elastic clamping portion 213 and the first limiting portion 212 are located at two non-opposite side edges of the first accommodating groove 211.

More specifically, as shown in fig. 3 and 4, in some embodiments, the first elastic clamping portions 213 are arranged in two groups, and the two groups of first elastic clamping portions 213 are located on opposite sides of the first accommodating groove 211, that is, one group of first elastic clamping portions 213 is located on the second side 2112 of the first accommodating groove 211, and the other group of second elastic clamping portions 222 is located on the fourth side 2114 opposite to the second side 2112. The set of first elastic clamping portions 213 includes at least one first elastic clamping portion 213. The number of the first limiting portions 212 may be plural, and the first limiting portions 212 are disposed at intervals on the same side of the first accommodating groove 211, for example, the first limiting portions 212 are disposed at intervals on the first side 2111 of the first accommodating groove 211.

For another example, in other embodiments, the first limiting portion 212 and the first elastic clamping portion 213 are located at two opposite sides of the first accommodating groove 211. The first limiting portion 212 and the first elastic clamping portion 213 are abutted to the first mirror surface 110 of the lens 100 from opposite side edges of the lens 100.

Referring to fig. 5, 6 and 7, in some embodiments, the optical module 10 further includes a liquid crystal panel 300. The liquid crystal panel 300 has a first panel 310 and a second panel 320 disposed opposite to each other in a thickness direction. The second end surface 220 of the fixing bracket 200 is formed with a second receiving groove 221 for receiving the liquid crystal panel 300. The second accommodating groove 221 is provided with a second elastic clamping portion 222 and a second limiting portion 223 at the periphery, the second elastic clamping portion 222 is used for being elastically deformed in a direction away from the second accommodating groove 221 under the action of external force so that the liquid crystal display 300 is accommodated in the second accommodating groove 221, the second elastic clamping portion 222 can be elastically reset and is abutted to the first panel 310 in a natural state, the second limiting portion 223 is used for being abutted to the first panel 310, and the second panel 320 of the liquid crystal display 300 faces the bottom wall of the second accommodating groove 221.

When the liquid crystal screen 300 is to be installed into the second accommodating groove 221 of the second end face 220, the second elastic clamping portion 222 can be operated to elastically deform away from the second accommodating groove 221, so that enough space is provided for installing the liquid crystal screen 300, interference between the second elastic clamping portion 222 and the liquid crystal screen 300 in the installation process is avoided, and damage to the liquid crystal screen 300 is prevented. The liquid crystal panel 300 may be placed in the second accommodating groove 221, and the second panel 320 of the liquid crystal panel 300 is oriented to the bottom wall of the second accommodating groove 221, that is, the second panel 320 of the liquid crystal panel 300 is oriented to the first end face 210, when the first panel 310 of the liquid crystal panel 300 abuts against the second limiting portion 223, the second elastic clamping portion 222 may not be operated any more, so that the second elastic clamping portion 222 is in a natural state, and is not subject to external force, and is capable of automatically resetting and abutting against the first panel 310 of the liquid crystal panel 300, and both the second elastic clamping portion 222 and the second limiting portion 223 abut against the first panel 310 of the liquid crystal panel 300, so as to prevent the liquid crystal panel 300 from being separated from the second accommodating groove 221. In addition, when the liquid crystal panel 300 is fitted into the first receiving groove 211, the side edges of the second receiving groove 221 may abut against the limit from the periphery of the liquid crystal panel 300, preventing the liquid crystal panel 300 from moving in a direction parallel to the screen.

Specifically, as shown in fig. 6 and 7, in some embodiments, one end of the second elastic clamping portion 222 is connected to the fixing bracket 200, the other end of the second elastic clamping portion 222 is a free end, and the free end of the second elastic clamping portion 222 is at least partially abutted to the first screen 310 in a natural state. The free end of the second elastic clamping portion 222 can elastically deform under the action of external force and is far away from the second accommodating groove 221, so as to avoid the position for loading the liquid crystal display 300.

Specifically, the free end of the second elastic clamping portion 222 is located at one side of the first panel 310 of the liquid crystal panel 300 and is provided with a second limiting protrusion for abutting against the first panel 310 to limit the liquid crystal panel 300 between the bottom wall of the second accommodating groove 221 and the second limiting protrusion in the thickness direction.

More specifically, in some embodiments, the second elastic clamping portion 222 may be integrally formed with the fixing bracket 200. In other embodiments, the end of the second elastic clamping portion 222 for connecting to the fixing bracket 200 may be connected to the fixing bracket 200 by bonding, ultrasonic welding, or the like.

More specifically, in some embodiments, the second stopper 223 may be integrally formed with the fixing bracket 200. In other embodiments, the end of the second limiting portion 223 for connecting to the fixing bracket 200 may be connected to the fixing bracket 200 by bonding, ultrasonic welding, or the like.

The second limiting portion 223 and the second elastic clamping portion 222 of the present application may be distributed in various manners around the periphery of the second accommodating groove 221.

For example, as shown in fig. 5, 6 and 7, in some embodiments, the liquid crystal panel 300 is substantially rectangular, and the second receiving groove 221 is adapted to the liquid crystal panel 300, and the second receiving groove 221 is also substantially rectangular, that is, the second receiving groove 221 has four sides connected in sequence. The second limiting portion 223 and the second elastic clamping portion 222 are located at two opposite sides of the second accommodating groove 221, and the second limiting portion 223 and the second elastic clamping portion 222 are abutted to the first panel 310 of the liquid crystal display 300 from two opposite side edges of the liquid crystal display 300.

More specifically, as shown in fig. 5, 6 and 7, in some embodiments, the second elastic clamping portions 222 and the second limiting portions 223 may be disposed in plurality, the plurality of second elastic clamping portions 222 are arranged at the same side of the second accommodating groove 221, and the plurality of second elastic clamping portions 222 are arranged at the same side of the other side of the second accommodating groove 221.

For another example, in other embodiments, the second limiting portion 223 and the second elastic clamping portion 222 may be located on two non-opposite sides of the second accommodating groove 221.

Referring to fig. 1, 2, 4, 6 and 7, in some embodiments, a ventilation hole 230 is formed through a side wall of the fixing support 200 of the optical module 10, so that an air channel is formed between the lens 100 and the lcd 300. The vent holes 230 may be provided in plurality. The ventilation holes 230 may be used for ventilation to dissipate heat from the lens 100 and the liquid crystal panel 300. Specifically, a plurality of ventilation holes 230 are respectively provided on two opposite sidewalls of the fixing bracket 200, wherein the ventilation hole 230 on one sidewall is used for air intake, and the ventilation hole 230 on the other sidewall is used for air outlet. In other embodiments, the ventilation holes 230 for air intake and the ventilation holes 230 for air outlet may be formed in adjacent side walls of the fixing bracket 200, respectively. It is understood that ventilation may be implemented to dissipate heat from the lens 100 and the lcd 300. When the optical module 10 is installed in the projector 20 mentioned below, the vent 230 may communicate with a fan in the projector 20 to dissipate heat from the liquid crystal panel 300.

In addition, as shown in fig. 8, the present application also relates to a projection device, which may be a monolithic liquid crystal projection device, and includes a projection light machine 20 and the optical module 10 of any of the above embodiments, wherein the optical module 10 is configured to be installed in the projection light machine 20.

Specifically, as shown in fig. 7, 8, 9 and 10, in some embodiments, two opposite sidewalls of the fixing support 200 of the optical module 10 are each formed with a clamping rib 240. The projection light machine 20 includes a housing 21, and a slot 22 into which the optical module 10 is inserted is formed in the housing 21. The housing 21 is formed therein with two detent recesses 23 corresponding to the detent ribs 240, and the two detent recesses 23 are located on opposite sides of the slot 22. When the optical module 10 is inserted into the housing 21 of the projection optical unit 20 from the slot 22, the clamping rib 240 just slides into the clamping groove 23, and the projection optical unit 20 abuts against the clamping rib 240 through the wall of the clamping groove 23 in the housing 21 to fix the optical module 10.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

In the description of the present utility model, it should be understood that the terms "length", "width", "thickness", "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "disposed," "secured" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

In the description of the present specification, the descriptions of the terms "one embodiment," "other implementation," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Claims

1. An optical module for use in a projection device, comprising:

2. The optical module according to claim 1, wherein one end of the first elastic clamping portion is connected to the fixing bracket, and the other end of the first elastic clamping portion is a free end, and the free end of the first elastic clamping portion is at least partially abutted to the first mirror surface in a natural state.

3. The optical module of claim 1, wherein the first stop portion and the first elastic clamping portion are located at opposite sides of the first receiving groove, and the first stop portion and the first elastic clamping portion abut against the first mirror surface of the lens from opposite side edges of the lens;

4. The optical module according to claim 1, further comprising a liquid crystal panel, wherein the liquid crystal panel has a first panel and a second panel disposed opposite to each other in a thickness direction, the second end surface is formed with a second accommodation groove for accommodating the liquid crystal panel, a second elastic clamping portion and a second limiting portion are disposed on a periphery of the second accommodation groove, the second elastic clamping portion is configured to elastically deform in a direction away from the second accommodation groove under an external force to enable the liquid crystal panel to be accommodated in the second accommodation groove, the second elastic clamping portion is capable of elastically resetting and abutting against the first panel in a natural state, and the second limiting portion is configured to abut against the first panel, and the second panel faces a bottom wall of the second accommodation groove.

5. The optical module according to claim 4, wherein one end of the second elastic clamping portion is connected to the fixing bracket, the other end of the second elastic clamping portion is a free end, and the free end of the second elastic clamping portion is at least partially abutted to the first screen in a natural state.

6. The optical module according to claim 4, wherein the second limiting portion and the second elastic clamping portion are located at opposite sides of the second accommodating groove, and the second limiting portion and the second elastic clamping portion are abutted to the first panel of the liquid crystal screen from opposite side edges of the liquid crystal screen;

or the second limiting part and the second elastic clamping part are positioned on two non-opposite sides of the second accommodating groove, and the second limiting part and the second elastic clamping part are abutted to the first screen of the liquid crystal screen from two non-opposite sides of the liquid crystal screen.

7. The optical module of claim 4, wherein a vent hole is formed through a side wall of the fixing bracket, and the vent hole is used for ventilation to radiate heat to the liquid crystal screen.

8. A projection device comprising a projection engine and an optical module according to any one of claims 1 to 7, said optical module being mounted in said projection engine.

9. The projection device of claim 8, wherein the projection light engine comprises a housing, a slot is formed in the housing, and the optical module is inserted into the slot.

10. The projection device of claim 9, wherein the opposite side walls of the fixing bracket are provided with clamping ribs, the housing is provided with clamping grooves for inserting the clamping ribs on opposite sides of the slot, and the housing is matched with the clamping ribs through the clamping grooves to fix the fixing bracket.