CN209248236U - Optical-mechanical module - Google Patents

Abstract

An optical-mechanical module comprises a shell, a light valve and a compensation module. The shell has an opening. The light valve has an active surface, the light valve is arranged on the shell and the active surface of the light valve is exposed from the opening of the shell, and the active surface is used to provide a light beam. The compensation module is arranged on the shell and comprises an optical compensation element located on the transmission path of the light beam, and a heat dissipation bracket for holding the optical compensation element, wherein when a part of the active surface is in a first state, the light beam is transmitted to and passes through the optical compensation element, and when a part of the active surface is in a second state, the light beam is transmitted to the heat dissipation bracket. The optical-mechanical module provided by the utility model improves the stability of the heat dissipation module by preventing the heat dissipation module from shaking, thereby improving the heat dissipation efficiency of the light valve and providing a good optical effect.

Description

Optomechanical module

technical field

The utility model relates to an optical module, in particular to an optical-mechanical module used for a projection device.

Background technique

A projection device is a display device for generating images. The imaging principle of the projection device is generally to convert the illumination beam generated by the light source into an image beam by means of a light valve, and then project the image beam onto a screen or a wall by means of a lens. However, in the current optical-mechanical module, the manner in which the heat dissipation device for conducting the accumulated heat of the light valve is locked on the housing is likely to cause shaking, thereby deteriorating the imaging quality of the projection device. In addition, heat sinks need to be provided to conduct the heat accumulated in the light valve inside the optomechanical module to the surrounding environment, and the additional configuration of heat sinks increases the cost.

The paragraph "Background Technology" is only used to help understand the content of the present utility model, so the content disclosed in the paragraph "Background Technology" may contain some known technologies that are not known to those skilled in the art. The content disclosed in the "Background Technology" paragraph does not mean that the content or the problems to be solved by one or more embodiments of the present utility model have been known or recognized by those skilled in the art before the application of the utility model.

Utility model content

The utility model provides an optical-mechanical module, which improves the stability of the heat-dissipating module by avoiding shaking of the heat-dissipating module, so as to improve the heat-dissipating efficiency of the light valve and provide good optical effects.

Other purposes and advantages of the utility model can be further understood from the technical characteristics disclosed in the utility model.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides an optical-mechanical module, including a housing, a light valve and a compensation module. The casing has an opening, and the light valve has an active surface, the light valve is configured on the casing, and the active surface of the light valve is exposed from the opening of the casing. The active face of the light valve is used to provide the light beam. The compensation module is arranged on the housing and includes an optical compensation element on the beam transmission path and a heat dissipation bracket for holding the optical compensation element, wherein when a part of the active surface is in the first state, the light beam is transmitted to and passes through The optical compensation element transmits the light beam to the cooling bracket when a part of the active surface is in the second state.

Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the optical-mechanical module of the present invention, the optical-mechanical module is fixedly connected to the housing by at least three fixing elements cooperating with at least three fixing structures of the housing. The shaking of the heat dissipation module can be avoided to improve the stability of the heat dissipation module, so as to improve the heat dissipation efficiency of the light valve, thereby providing good optical effects. In other optical-mechanical modules of the present utility model, the compensation module can also be used to realize heat dissipation and light-shielding effects in the optical-mechanical module in addition to configuring the optical compensation sheet required by the projection device, thereby increasing the optical-mechanical module available space within the facility, and/or reduce spending costs.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with accompanying drawings.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of an optical-mechanical module according to an embodiment of the present invention.

FIG. 2 is an exploded schematic diagram of the optical-mechanical module of FIG. 1 .

FIG. 3 is a three-dimensional schematic diagram of a heat dissipation module in the optical-mechanical module of FIG. 2 from another perspective.

FIG. 4 is a schematic top view of the optical-mechanical module of FIG. 1 .

FIG. 5 is a three-dimensional schematic diagram of a part of the structure of the optical-mechanical module in FIG. 2 .

FIG. 6 is a three-dimensional schematic diagram of an optical-mechanical module according to another embodiment of the present invention.

FIG. 7 is an exploded schematic diagram of the optical-mechanical module of FIG. 6 .

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

FIG. 1 is a three-dimensional schematic diagram of an optical-mechanical module according to an embodiment of the present invention. FIG. 2 is an exploded schematic diagram of the optical-mechanical module of FIG. 1 . Please refer to FIG. 1 and FIG. 2 , the present embodiment provides an optical-mechanical module 100 , including a housing 110 , a light valve 120 , a heat dissipation module 130 , at least three fixing elements 140 and a compensation module 200 . Specifically, in this embodiment, the optical-mechanical module 100 further includes a circuit board 160 and an optical transmission module 190 . For example, the circuit board 160 may be a printed circuit board (Printed circuit board, PCB). The optical-mechanical module 100 can be configured in a projection device, and can convert the illumination beam provided by the light source in the projection device into an image beam, and further convert it into a projection beam through a projection lens (not shown), so as to project to a projection target ( not shown), such as screens or walls. In this embodiment, the optical-mechanical module 100 uses the RTIR optical path structure, but the present invention is not limited thereto.

The light valve 120 is, for example, a reflective light modulator or a transmissive light modulator. Taking a reflective light modulator as an example, the light valve 120 is, for example, a Liquid Crystal On Silicon panel (LCoS panel), a Digital Micro-mirror Device (Digital Micro-mirror Device, DMD) and the like. In some embodiments, the light valve 120 can also be a transparent liquid crystal panel (Transparent Liquid Crystal Panel), an electro-optical modulator (Electro-Optical Modulator), a magneto-optic modulator (Maganeto-Optic modulator), an acousto-optic modulator Acousto-Optic Modulator (AOM) and other transmissive optical modulators. The light valve 120 has an active surface S1 and a thermal interface S2. The active surface S1 includes a plurality of movable reflective mirrors for receiving illumination beams and providing image beams. The thermal interface S2 is used to transmit thermal energy to the surrounding environment. The circuit board 160 is electrically connected to the light valve 120 and is used to change the states of the movable reflectors of the light valve 120 , such as an activated state or a closed state, by electrical signals. The light transmission module 190 is, for example, a prism group for reflecting or refracting the image beam provided by the light valve 120 to the projection lens. The present invention does not limit the types and types of the light valve 120 , the circuit board 160 and the light conduction module 190 .

In this embodiment, the light valve 120 and the light conduction module 190 are disposed in the housing 110 , and the circuit board 160 is disposed on the housing 110 . Specifically, the housing 110 includes an upper housing 110_1 , a lower housing 110_2 and an opening 114 . The light valve 120 is disposed in the upper casing 110_1 and exposed from the opening 114 of the casing 110 . The active surface S1 is used to provide light beams (ie, the aforementioned image light beams). The light transmission module 190 is located between the upper case 110_1 and the lower case 110_2 . For example, the circuit board 160 can be locked and fixed on the housing 110 by one or more circuit board fixing members 240 (eg, screws). FIG. 3 is a three-dimensional schematic diagram of a heat dissipation module in the optical-mechanical module of FIG. 2 from another perspective. Please refer to Figure 1 to Figure 3 at the same time. The heat dissipation module 130 is disposed on the casing 110 , and the circuit board 160 is located between the heat dissipation module 130 and the light valve 120 . The heat dissipation module 130 has a heat dissipation contact surface S3 for contacting the thermal interface S2 of the light valve 120 to transmit the heat generated by the light valve 120 to the heat dissipation structure of the heat dissipation module 130 . In detail, in this embodiment, the heat dissipation module 130 has a protruding portion 134 , and the heat dissipation contact surface S3 is located at the end of the protruding portion 134 . In this embodiment, the protrusion 134 is square, but the application is not limited thereto. The circuit board 160 has a protrusion hole 162 , and the protrusion 134 of the heat dissipation module 130 passes through the protrusion hole 162 of the circuit board 160 to contact the thermal interface S2 of the light valve 120 . Therefore, the light valve 120 can directly transfer heat to the surrounding environment through direct contact with the protruding portion 134 of the heat dissipation module 130 .

FIG. 4 is a schematic top view of the optical-mechanical module of FIG. 1 . Please refer to FIG. 1 , FIG. 2 and FIG. 4 at the same time, the housing 110 further includes at least three fixing structures 112 , wherein the number and positions of the fixing structures 112 correspond to the number and positions of the fixing elements 140 . In other words, the fixing structure 112 is arranged in a pair with the fixing element 140 . The number of the fixing structures 112 and the fixing elements 140 may be three or more, and the following description will take three as an example, but the present invention is not limited thereto. The optical-mechanical module 100 can be fixedly connected to the housing 110 through the cooperation of the fixing structure 112 and the fixing element 140 , so that the heat dissipation module 130 , the circuit board 160 or other elements are fixedly connected. For example, the casing 110 may include at least one circuit board fixing structure 113 , and at least one circuit board through hole 1601 , 1602 is defined in the circuit board 160 . For example, the circuit board fixing member 240 can pass through the circuit board through hole 1601 and be locked to the circuit board fixing structure 113 on the housing 110 , so as to fix the circuit board 160 to the housing 110 . In detail, the circuit board fixing structure 113 can be a fixing column with internal threads, and the circuit board fixing member 240 can be a screw, for example, the rod of the screw passes through the circuit board hole 1601 of the circuit board, so as to be threaded with the circuit board fixing structure 113 connect. However, the application does not limit the number of the circuit board fixing structures 113 or the circuit board fixing members 240 . In other embodiments, two or more circuit board fixing structures 113 and two or more circuit board fixing parts 240 can be configured, and the circuit board fixing parts 240 and the circuit board fixing structure 113 can be locked to make the circuit The board is evenly fixed on the shell under force. For example, in the embodiment where the housing includes two circuit board fixing structures 113, the two circuit board fixing structures 113 are perforated relative to the protrusions on the circuit board for the protrusions 134 of the heat dissipation module 130 to pass through. 162 are symmetrically arranged to facilitate uniform stress on the circuit board and avoid warping. The application also does not limit the form of the circuit board fixing structure 113 or the circuit board fixing member 240 . In other embodiments, the circuit board fixing structure 113 and the circuit board fixing member 240 for fixing the circuit board 160 can be replaced or partially replaced by other fixing elements or fixing structures. For example, in other embodiments, the circuit board fixing element 240 can be replaced by an adapter element 170 (detailed below).

To be more specific, in this embodiment, at least one of the fixing structures 112 is a fixing post with threads inside, and the following description will take three fixing posts as an example. The heat dissipation module 130 includes a number of through holes 132 corresponding to the number of the fixing structures 112 , so that the fixing elements 140 respectively pass through the through holes 132 and are further connected and fixed with the fixing structures 112 to achieve cooperation. Therefore, when the housing 110 is connected and fixed with the fixing element 140 , the housing 110 can limit the horizontal position of the heat dissipation module 130 and the circuit board 160 through the columnar structure of the fixing structure 112 , making the overall structure more stable. In other embodiments, the fixing structure 112 may be a fixing through hole provided with threads, and the fixing element 140 passes through the heat dissipation module 130 and the circuit board 160 to be threadedly connected with the fixing structure 112 to achieve cooperation. However, the application does not limit how the fixing element 140 cooperates with the fixing structure 112 , the two may be directly connected, or may be indirectly connected with other elements interposed therebetween.

In this embodiment, the fixing element 140 is, for example, a stepped screw. In other embodiments, ordinary screws or other types of screws can also be used, and the present invention is not limited thereto. In this embodiment, on a plane parallel to the thermal interface S2 of the light valve 120 , the plurality of fixing elements 140 form a triangle or other polygons. For example, the three fixing elements 140 are not connected to a line on a plane parallel to the thermal interface S2. In this way, shaking of the heat dissipation module 130 can be avoided and the stability of the heat dissipation module 130 can be improved, so as to improve the heat dissipation efficiency of the light valve 120 and provide good optical effects.

Besides, in this embodiment, the optical-mechanical module 100 further includes at least three spring elements 150 . For example, three spring elements 150 are respectively connected between the fixing element 140 and the fixing structure 112 of the casing 110 . Specifically, the three spring elements 150 in this embodiment are sleeved on the fixing element 140 , that is, sleeved on the stepped structure portion of the stepped screw. Additionally or additionally, the through hole 132 of the heat dissipation module 130 may include a spring element bearing surface 133, when the spring element 150 is sleeved on the fixing element 140 to fix the heat dissipation module 130 on the housing, the spring element 150 leans against The spring element of the through hole 132 rests on the bearing surface 133 . In this way, a buffer space between the heat dissipation module 130 and the casing 110 can be further provided, so as to eliminate the tolerance generated when the heat dissipation module 130 is fixed to the casing 110 . In this embodiment, the spring member 150 is, for example, a helical compression spring, but in other embodiments, a disk spring or a combination of the above two can also be used, and the present invention is not limited thereto.

In this embodiment, the optical-mechanical module 100 may further include at least one transition element 170 . For example, in the case of an adapter element 170 , it is fixedly connected between one of the fixing elements 140 and one of the fixing structures 112 . Specifically, a fixing structure 112 in the housing 110 is fixedly connected to a corresponding fixing element 140 via an adapter element 170 . In other words, in this embodiment, the lengths of the three fixing structures 112 in the housing 110 may be the same or different from each other. The adapter element 170 includes an inner threaded portion 172 and an outer threaded stem portion 174 (the outer threaded stem portion 174 shown in FIG. 2 is for illustrative purposes only). The inner threaded portion 172 is used for fixed connection with one of the fixing elements 140 , and the outer threaded rod portion 174 is fixedly connected with one of the fixing structures 112 in the casing 110 . In this embodiment, the internal thread portion 172 and the external thread rod portion 174 are integrally formed, such as using an adapter screw, but the present invention is not limited thereto. Therefore, the fixing element 140 can cooperate with the fixing structure 112 by connecting the adapter element 170 to further increase the stability between the heat dissipation module 130 and the circuit board 160 . At the same time, the distance between the heat dissipation module 130 and the circuit board 160 can be changed by changing the height of the adapter element 170 , so as to adjust a good heat dissipation effect. Additionally or additionally, the adapter element 170 can also be used to assist in fixing the circuit board 160 . For example, the externally threaded rod portion 174 of the adapter element 170 can pass through the circuit board through hole 1602 of the circuit board 160 , and then be threadedly connected with one of the fixing structures 112 . In this case, the fixing structure 112 connected to the adapter element 170 and the above-mentioned circuit board fixing structure 113 are positioned to be distributed on both sides of the protrusion hole 162 on the circuit board 160 and arranged symmetrically, so as to facilitate the circuit board. Stable and fixed and uniform force.

In addition, the optomechanical module 100 may further include at least one auxiliary element 180 , which is sleeved on, for example, an adapter element 170 and located between the adapter element 170 and a fixing structure 112 . In this embodiment, the auxiliary element 180 can be an elastic element such as a disc spring, but in other embodiments, a helical compression spring similar to the spring element 150 can also be used, and the present invention is not limited thereto. In this way, the elastic force generated by the connection method using the fixing element 140 , the adapter element 170 , the auxiliary element 180 and the fixing structure 112 is approximately equal to twice that generated by the connection method between the other fixing elements 140 and the fixing structure 112 directly. elastic. For example, when assembled, the pressure applied to the light valve 120 may not exceed 12 kg. Therefore, a buffer space between the heat dissipation module 130 and the casing 110 can be further provided to eliminate the tolerance generated when the heat dissipation module 130 is fixed to the casing 110 .

In this embodiment, in the case where the adapter element 170 and the auxiliary element 180 are disposed between the fixing element 140 and the fixing structure 112 , the fixing structure 112 can be designed as a lower height fixing column. In other words, the heights of the fixing structures 112 may be the same or different from each other. Alternatively, in the case where the adapter element 170 and the auxiliary element 180 are provided between the fixing element 140 and the fixing structure 112, the fixing element 140 is designed as a screw or a stepped screw with a short length to achieve a stable fit, but this practical The new type is not limited to this.

FIG. 5 is a three-dimensional schematic diagram of a part of the structure of the optical-mechanical module in FIG. 2 . Please refer to FIG. 1 , FIG. 2 and FIG. 5 , in this embodiment, the compensation module 200 is configured on the housing 110 , and can be inserted into the housing 110 from a notch 116 of the housing 110 to complete the configuration. In detail, the compensation module 200 includes an optical compensation element 220 and a heat dissipation bracket 210 , and the heat dissipation bracket 210 is located between the light valve 120 and the optical compensation element 220 . The optical compensation element 220 is located on the transmission path of the light beam, for example, a B270 optical compensation film, to compensate the optical path difference of the light beam. The heat dissipation bracket 210 is used to hold the optical compensation element 220 , and the light transmission module 190 is located between the light valve 120 and the optical compensation element 220 of the compensation module 200 .

The active surface S1 of the light valve 120 can be controlled by electrical signals to switch between different states. In the following description, the first state is defined as a state in which, for example, a part of the movable reflector included in the light valve 120 is activated. The illumination beam inside is converted into an image beam and passed to the projection lens. The second state is defined as a state in which, for example, a part of the movable reflector included in the light valve 120 is closed, and in this state, the part of the movable reflector stops transmitting the image beam to the projection lens. In this embodiment, when a part of the reflective mirrors in the light valve 120 is in the first state, the light beam is transmitted to and passes through the optical compensation element 220 . When the part of the reflective mirror in the light valve 120 is in the second state, the light beam is transmitted to the cooling bracket 210 . Therefore, the heat can be transferred to the heat dissipation bracket 210 to dissipate heat by transmitting light beams. In other words, in this embodiment, in addition to configuring the optical compensation sheet required by the projection device, the compensation module 200 can also be used to achieve heat dissipation and light shielding effects in the optical-mechanical module 100, thereby further increasing the light intensity. The available space in the machine module 100 can be improved, and/or the cost can be reduced.

In more detail, in this embodiment, the cross section of the heat dissipation support 210 is L-shaped, and may include a heat dissipation portion 212 and a support portion 214 . The heat dissipation part 212 can be fixed on the casing 110 . The bracket portion 214 can be used to hold the optical compensation element 220 and pass through the notch 116 on the housing 110 , so that the heat dissipation bracket 210 bridges the optical compensation element 220 on the transmission path of the light beam. In the architecture of this embodiment (for example, RTIR (Reverse Total Internal prism) optical path architecture), the bracket part 214 of the heat dissipation bracket 210 and the light valve 120 are respectively located on the adjacent two sides of the light transmission module 190, but the present invention does not limited to this. In this embodiment, the heat dissipation part 212 and the support part 214 are integrally formed, but in other embodiments, the heat dissipation part 212 and the support part 214 can be separate elements, which can be assembled to form the heat dissipation support 210 .

In this embodiment, the heat dissipation bracket 210 further includes a plurality of clamping structures 216 for clamping the optical compensation element 220 . In addition, in this embodiment, the heat dissipation bracket 210 may further include a plurality of grooves 218 , and the compensation module 200 may further include a plurality of adhesive parts 230 , and the adhesive parts 230 may be filled in the grooves 218 . In this embodiment, the adhesive member 230 is UV glue, but the present invention is not limited thereto. Therefore, the optical compensation element 220 can not only be limited on the heat dissipation support 210 by the clamping structure 216 , but also can be adhered and fixed on the heat dissipation support 210 by the adhesive member 230 . In this way, the stability of the compensation module 200 can be further increased, so that the optical-mechanical module 100 has a good optical effect. The present invention does not limit the number and position of the multiple clamping structures 216, which may be 2 to 4 or more, and the multiple clamping structures 216 may be symmetrical or asymmetrical with respect to the clamped optical compensation element 220 set up.

FIG. 6 is a three-dimensional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. FIG. 7 is an exploded schematic diagram of the optical-mechanical module of FIG. 6 . Please refer to FIG. 6 and FIG. 7 , the optical-mechanical module 100A of this embodiment is similar to the optical-mechanical module 100 of FIG. 1 . The difference between the two is that in this embodiment, the optical-mechanical module 100A uses a TIR optical path architecture. In this embodiment, the bracket part 214 of the heat dissipation bracket 210 in the compensation module 200 and the light valve 120 (not shown in the figure) are respectively located on opposite sides of the light transmission module 190 . Therefore, in this embodiment, when a part of the reflective mirrors in the light valve 120 is in the first state, the light beam passes through the optical compensation element 220 . When the part of the reflective mirror in the light valve 120 is in the second state, the light beam is transmitted to the heat dissipation bracket 210 on the side. In this way, the compensation module 200, in addition to being used to configure the optical compensation sheet required by the projection device, can also be used to achieve heat dissipation and light shielding effects in the optomechanical module 100, further increasing the available space in the optomechanical module 100, and/or reduce costs.

In summary, the embodiments of the present invention have at least one of the following advantages or functions. In the optical-mechanical module of the present invention, the optical-mechanical module is fixedly connected to the housing by at least three fixing elements cooperating with at least three fixing structures of the housing. The shaking of the heat dissipation module can be avoided to improve the stability of the heat dissipation module, so as to improve the heat dissipation efficiency of the light valve, thereby providing good optical effects.

But the above-mentioned person is only the preferred embodiment of the present utility model, when can not limit the scope of the present utility model implementation with this, namely all simple equivalent changes made according to the claims of the utility model and the content of the utility model and Amendments all still belong to the scope covered by the utility model patent. In addition, any embodiment or claim of the present utility model does not need to achieve all the purposes, advantages or features disclosed in the present utility model. In addition, the abstract and the name of the utility model are only used to assist the retrieval of patent documents, and are not used to limit the scope of rights of the utility model. In addition, terms such as "first" and "second" mentioned in the specification or claims are only used to name elements or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.

Explanation of reference signs:

100, 100A: Optical-mechanical module

110: shell

110_1: Upper housing

110_2: lower housing

112: fixed structure

113: Circuit board fixing structure

114: opening

116: Notch

120: light valve

130: cooling module

132: perforation

133: spring bearing surface

134: Protrusion

140: Fixed element

150: spring piece

160: circuit board

1601: Circuit board perforation

1602: Circuit board perforation

162: Projection perforation

170: Transfer element

172: Internal thread part

174: Externally threaded shank

180: auxiliary components

190: Light transmission module

200: compensation module

210: cooling bracket

212: Cooling Department

214: Bracket

216: clamping structure

218: Groove

220: Optical compensation element

230: Adhesive parts

240: circuit board holder

S1: active surface

S2: thermal interface

S3: Thermal contact surface.

Claims (11)

1. An optomechanical module, characterized in that it comprises a housing, a light valve and a compensation module, wherein: the housing has an opening; The light valve has an active surface, the light valve is configured on the housing and the active surface of the light valve is exposed from the opening of the housing, the active surface is used to provide light beams; and The compensation module is configured on the housing and includes an optical compensation element and a cooling bracket, wherein: The optical compensation element is located on the transmission path of the light beam; and The heat dissipation bracket is used to hold the optical compensation element, wherein when a part of the active surface is in the first state, the light beam passes to and passes through the optical compensation element, and when a part of the active surface is in the second state In the state, the light beam is delivered to the cooling bracket. 2. The optical-mechanical module according to claim 1, characterized in that, the optical-mechanical module further comprises a light-transmitting module, which is arranged on the housing and located along the transmission path of the light beam at the optical-mechanical module. Between the valve and the optical compensation element of the compensation module. 3 . The optical-mechanical module according to claim 1 , wherein a cross-section of the cooling bracket is L-shaped. 4 . 4. The optical-mechanical module according to claim 1, wherein the heat dissipation bracket is located between the light valve and the optical compensation element of the compensation module. 5. The optical-mechanical module according to claim 2, wherein the heat dissipation support includes a heat dissipation portion and a support portion, and a notch is provided on the housing, wherein the heat dissipation portion is fixed by at least one fixing element on the housing, and the bracket part is used to hold the optical compensation element and pass through the notch on the housing, so that the heat dissipation bracket erects the optical compensation element on the on the transmission path of the light beam passing through the light transmission module. 6 . The optical-mechanical module according to claim 5 , wherein the bracket part of the heat dissipation bracket and the light valve are respectively located on two adjacent sides of the light-transmitting module. 7 . 7. The optical-mechanical module according to claim 1, wherein the heat dissipation bracket comprises a plurality of clamping structures for clamping the optical compensation element. 8. The optical-mechanical module according to claim 1, wherein a plurality of grooves are provided on the heat dissipation bracket of the compensation module, and the optical compensation element is filled in the plurality of grooves A plurality of adhesive parts are fixed on the heat dissipation support. 9. The optical-mechanical module according to claim 1, further comprising: The heat dissipation module is configured on the casing and configured to be in contact with the light valve. 10 . The optical-mechanical module according to claim 1 , wherein the heat dissipation bracket of the compensation module is integrally formed with the housing. 11 . 11 . The optical-mechanical module according to claim 5 , wherein the bracket portion of the heat dissipation bracket and the light valve are respectively located on opposite sides of the light-conducting module. 12 .