Optical machine module and projection device

Abstract

The invention provides an optical machine module which comprises a cover body, a light valve module and heat-conducting glue. The cover body is provided with at least one filling hole and comprises a cover body part, a plurality of supporting parts and a plurality of connecting parts, the supporting parts and the connecting parts are vertically connected with the cover body part, the cover body part is provided with an opening, the light valve module comprises a base and a light valve element, the base is arranged on the supporting parts, and the light valve element is provided with a light emitting surface and a peripheral surface connected with the light emitting surface. The light emitting surface corresponds to the opening and is spaced from the cover body part. The plurality of connection portions encircle the peripheral surface. At least the filling hole communicates to a space between the peripheral surface of the light valve and the cover body. The heat-conducting glue is arranged between the light valve module and the cover body. The heat-conducting glue is connected with the base, the peripheral surface, the cover body part, the plurality of connecting parts and the plurality of supporting parts. The invention also provides a projection device comprising the ray machine module. The ray machine module and the projection device provided by the invention have better heat dissipation efficiency.

Description

Technical Field

[0001] The present invention relates to an optical device, and more particularly to an optical-mechanical module and a projection device having the optical-mechanical module. Background Art

[0002] In common projection devices, light valves are used to convert the illumination beam from the light source module into an image beam, which is then transmitted to the projection lens and projected out of the projection device. As the projection brightness of the projection device increases, the heat generated by the light valve increases significantly, resulting in a large temperature difference between the front and rear ends of the light valve, which reduces the projection quality.

[0003] The "background technology" section is only used to help understand the content of the present invention. Therefore, the content disclosed in the "background technology" section may contain some known technologies that are not known to those skilled in the art. The content disclosed in the "background technology" section does not mean that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those skilled in the art before the application of the present invention. Summary of the invention

[0004] The invention provides an optical-mechanical module, which has better heat dissipation efficiency.

[0005] The present invention further provides a projection device including the above-mentioned optical-mechanical module, which can improve the heat dissipation efficiency of the light valve to reduce the temperature difference between the front end and the rear end of the light valve, and can have better projection quality and product competitiveness.

[0006] Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0007] To achieve one or part or all of the above purposes or other purposes, one embodiment of the present invention proposes an optical machine module, including a cover body, a light valve module and a thermally conductive adhesive. The cover body has at least one filling hole, and includes a cover body portion and a plurality of supporting portions and a plurality of connecting portions vertically connected to the cover body portion. The cover body portion has an opening, and the plurality of connecting portions connect a plurality of supporting portions separated from each other. The light valve module includes a base and a light valve element, the light valve element is arranged on the base, and the base is arranged on a plurality of supporting portions, the light valve element has a light emitting surface and a surrounding surface connected to the light emitting surface. The light emitting surface corresponds to the opening and is arranged at intervals with the cover body portion. A plurality of connecting portions surround the surrounding surface. At least the filling hole is connected to the surrounding surface of the light valve and the space between the cover body. The thermally conductive adhesive is arranged between the light valve module and the cover body. The thermally conductive adhesive connects the base, the surrounding surface, the cover body portion, the plurality of connecting portions and the plurality of supporting portions.

[0008] To achieve one or part or all of the above purposes or other purposes, one embodiment of the present invention provides a projection device, including a light source module, an optical machine module and a projection lens. The light source module is used to provide an illumination beam. The optical machine module includes a cover body, a light valve module and a thermal conductive adhesive. The cover body has at least one filling hole, and includes a cover body part and a plurality of supporting parts and a plurality of connecting parts vertically connected to the cover body part. The cover body part has an opening, and the plurality of connecting parts connect a plurality of supporting parts separated from each other. The light valve module includes a base and a light valve element, the light valve element is arranged on the base, and the base is arranged on the plurality of supporting parts. The light valve module is arranged on the transmission path of the illumination beam to convert the illumination beam into an image beam. The light valve element has a light emitting surface and a surrounding surface connected to the light emitting surface. The light emitting surface corresponds to the opening and is arranged at intervals with the cover body part. The plurality of connecting parts surround the surrounding surface. At least the filling hole is connected to the space between the surrounding surface of the light valve and the cover body. The thermal conductive adhesive is arranged between the light valve module and the cover body. The heat conductive adhesive connects the base, the surrounding surface, the cover, the plurality of connecting parts and the plurality of supporting parts. The projection lens is arranged on the transmission path of the image beam, and is used to project the image beam out of the projection device.

[0009] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the design of the optical-mechanical module of the present invention, a thermally conductive adhesive is disposed between the light valve, the base, and the cover body, wherein the thermally conductive adhesive covers the base, the surrounding surface of the light valve, and the multiple connection parts and the multiple support parts of the cover body without gaps, and in a direction perpendicular to the light emitting surface, the base and the surrounding surface of the light valve are connected to the cover body without gaps through the thermally conductive adhesive. Thereby, the heat dissipation area of ​​the front end of the light valve can be increased, and the heat dissipation efficiency of the light valve can be improved. In addition, because the heat at the front end of the light valve can be quickly extracted, it helps to reduce the temperature difference between the front end and the rear end of the light valve, thereby improving the projection quality of the projection device using this optical-mechanical module. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of a projection device according to an embodiment of the present invention.

[0011] Figure 2A yes Figure 1 A partial three-dimensional schematic diagram of the projection device.

[0012] Figure 2B yes Figure 2A A three-dimensional diagram from another perspective.

[0013] Figure 2C is along Figure 2A A schematic cross-sectional view of line II'.

[0014] Figure 3 is a cross-sectional schematic diagram of a projection device according to another embodiment of the present invention.

[0015] Figure 4 is a cross-sectional schematic diagram of a projection device according to another embodiment of the present invention.

[0016] Figure 5 is a cross-sectional schematic diagram of an opto-mechanical module according to another embodiment of the present invention.

[0017] Figure 6 is a cross-sectional schematic diagram of an opto-mechanical module according to another embodiment of the present invention.

[0018] Figure 7 is a three-dimensional schematic diagram of an optical-mechanical module according to another embodiment of the present invention.

[0019] Figure 8 is a cross-sectional schematic diagram of an opto-mechanical module according to another embodiment of the present invention.

[0020] Fig. 9 is a cross-sectional schematic diagram of an opto-mechanical module according to another embodiment of the present invention.

[0021] Fig. 10A It is a partial three-dimensional schematic diagram of an optical-mechanical module according to another embodiment of the present invention.

[0022] Fig. 10B is along Fig. 10A Schematic cross-sectional view of line II-II'.

[0023] Description of reference numerals:

[0024] 10a, 10b, 10c: Projection device

[0025] 20: Light source module

[0026] 30: Projection lens

[0027] 40: Prism Group

[0028] 50: Dust-proof components

[0029] 60: Prism dust protection assembly

[0030] 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i: Optical-mechanical modules

[0031] 110a, 110b, 110d, 110e, 110g, 110i: cover

[0032] 112a, 112b, 112d, 112e, 112g, 112i: cover

[0033] 113a, 113b: Open

[0034] 114a, 114b, 114d, 114e, 114g, 114i: support part

[0035] 115a, 115b, 115d, 115g, 115i1, 115i2, 115i3: Filling holes

[0036] 116a, 116i: Connecting part

[0037] 117a: Supporting convex point

[0038] 120: Base

[0039] 130: Light valve element

[0040] 131: Light emitting surface

[0041] 133: Configuration surface

[0042] 135: Surrounding surface

[0043] 140a, 140c, 140d: Thermally conductive adhesive

[0044] 150: Shell

[0045] 151: Assembly port

[0046] 153: Shell bearing convex point

[0047] 160: Shell dustproof component

[0048] 170: Dust protection components

[0049] 180e, 180f: Heat conduction plate

[0050] 181: Heat conducting plate opening

[0051] 182: Ontology Department

[0052] 184e, 184f: Extension

[0053] 190: Compressible materials

[0054] D: Direction

[0055] L1: illumination beam

[0056] L2: Image beam

[0057] LM: Light Valve Module

[0058] S1: First surface

[0059] S2: Second surface

[0060] ST1, ST2: stepped surface. DETAILED DESCRIPTION

[0061] The other technical contents, features and effects of the present invention described above 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 the directions with reference to the accompanying drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.

[0062] Figure 1 is a schematic diagram of a projection device according to an embodiment of the present invention. Figure 1 In the present embodiment, the projection device 10a includes a light source module 20, an optical machine module 100a and a projection lens 30. The light source module 20 is used to provide an illumination light beam L1. The light source module 20 may be composed of at least one light emitting element, a wavelength conversion element, a light homogenizing element, a filter element and at least one light guide element, so as to provide light beams of different wavelengths as the source of the illumination light beam L1. The multiple light emitting elements may be light emitting diodes (LEDs) or laser diodes (LDs), but the present invention does not limit the type or form of the light source module 20. The detailed structure and implementation method thereof can be sufficiently taught, suggested and implemented by the common knowledge in the technical field, so they will not be described in detail.

[0063] The optical machine module 100a includes a light valve module LM, and the light valve module LM is arranged on the transmission path of the illumination light beam L1 to convert the illumination light beam L1 into an image light beam L2. For example, the light valve element of the light valve module LM can be a reflective light modulator such as a liquid crystal on silicon panel or a digital micro-mirror device. Alternatively, the light valve module LM can be a transmissive light modulator such as a transparent liquid crystal panel, an electro-optical modulator, a magneto-optical modulator or an acousto-optical modulator. The present invention does not limit the type and type of the light valve module LM. The detailed steps and implementation methods of the method of converting the illumination light beam L1 into the image light beam L2 by the light valve module LM can be sufficiently taught, suggested and implemented by the common knowledge in the relevant technical field, so it is not repeated here.

[0064] The projection lens 30 is disposed on the transmission path of the image beam L2, and the projection lens 30 is used to project the image beam L2 out of the projection device 10a and onto a projection target, such as a screen or a wall. The projection lens 30 may include a combination of one or more optical lenses with refractive power, such as various combinations of non-planar lenses such as a biconcave lens, a biconvex lens, a concave-convex lens, a convex-concave lens, a plano-convex lens, and a plano-concave lens. In one embodiment, the projection lens 30 may also include a planar optical lens to project the image beam L2 out of the projection device 10a in a reflective manner. The present invention does not limit the type and type of the projection lens 30.

[0065] Figure 2A yes Figure 1 A partial three-dimensional schematic diagram of the projection device. Figure 2B yes Figure 2A A three-dimensional diagram from another perspective. Figure 2C is along Figure 2A For the convenience of explanation, Figure 2A and Figure 2B The prism group is omitted in the figure. Figure 2B The thermal conductive adhesive and the light valve module are omitted, and only the structure of the cover is schematically drawn.

[0066] Please also refer to Figure 2A , Figure 2B as well as Figure 2C In this embodiment, the optical engine module 100a further includes a cover 110a and a thermal conductive adhesive 140a. The cover 110a has at least one filling hole (two filling holes 115a are schematically shown), and includes a cover portion 112a and a plurality of supporting portions 114a and a plurality of connecting portions 116a vertically connected to the cover portion 112a. In this embodiment, the filling hole 115a is located on the cover portion 112a. The cover portion 112a has an opening 113a, and the plurality of connecting portions 116a connect the plurality of supporting portions 114a separated from each other. The height of the supporting portion 114a (the length in a direction perpendicular to the surface of the cover portion 112a) is, for example, greater than the height of the connecting portion 116a. The light valve module LM includes a base 120 and a light valve element 130, the light valve element 130 is, for example, disposed on the base 120, and the base 120 is, for example, disposed on (supported by) the plurality of supporting portions 114a of the cover 110a. Here, the number of the supporting portions 114 a is, for example, three, but is not limited thereto.

[0067] In this embodiment, the light valve module LM includes a front end and a rear end. The front end of the light valve module LM is an end adjacent to the opening 113a of the cover 112a. More specifically, the front end is an end that receives the illumination light beam L1 and emits the image light beam L2. In contrast, the rear end of the light valve module LM is defined as an end that is away from the opening 113a, such as the base 120. Here, the light valve element 130 is, for example, located between the base 120 and the cover 112a, and a plurality of support portions 114a and a plurality of connecting portions 116a are disposed around the side of the light valve element 130. In detail, the light valve element 130 has a light emitting surface 131 and a surrounding surface 135 connected to the light emitting surface 131. The surrounding surface 135 is, for example, located between the light emitting surface 131 and the base 120, and the light emitting surface 131 corresponds to the opening 113a and is spaced apart from the cover 112a. In one embodiment, the light emitting surface 131, for example, includes an optical surface of the light valve element 130 for converting the illumination light beam L1 into the image light beam L2 and a surface surrounding the optical surface (the surrounding surface is, for example, parallel to the optical surface). That is, the light emitting surface 131 is not in direct contact with the cover portion 112a, but there is a gap distance between the light emitting surface 131 and the cover portion 112a. Specifically, the light valve element 130, for example, has a light emitting surface 131 and a configuration surface 133 that are opposite to each other, and a surrounding surface 135 connecting the light emitting surface 131 and the configuration surface 133. The configuration surface 133 is configured on the base 120. The plurality of connecting portions 116a of the cover 110a surround the surrounding surface 135, wherein the surrounding surface 135 of the light valve element 130 is embodied as a stepped surface, such as Figure 2C As shown, the shape of the surrounding surface 135 in the cross section perpendicular to the light emitting surface 131 is a plurality of line segments connected in a step shape.

[0068] In particular, please refer to Figure 2C, the filling hole 115a is connected to the space between the surrounding surface 135 of the light valve element 130 and the cover 110a, and the thermal conductive glue 140a is disposed between the light valve module LM and the cover 110a, wherein the thermal conductive glue 140a is filled between the light valve module LM and the cover 110a through the filling hole 115a, that is, through pressure and the plasticity of the glue material, the filled thermal conductive glue 140a can be spread in the space between the light valve module LM and the cover 110a, that is, the thermal conductive glue 140a can connect the base 120, the surrounding surface 135, the cover 111a, the plurality of connecting parts 116a and the plurality of supporting parts 114a. Here, the thermal conductive glue 140a is, for example, a light curing material or a heat curing material, that is, an uncured paste material or a curable material that is heated and irradiated with a special wavelength, and the thermal conductivity of the thermal conductive glue 140a is greater than or equal to 2W / (m·K). The thermal conductive adhesive 140a covers the surrounding surface 135 of the light valve element 130 without gaps (for example, the ratio of the contact area between the thermal conductive adhesive 140a and the surrounding surface 135 to the area of ​​the surrounding surface 135 is greater than or equal to 95%), and the side surfaces of the multiple connecting portions 116a and the multiple supporting portions 114a of the cover 110a facing the surrounding surface 135. The cured thermal conductive adhesive 140a is, for example, a ring shape surrounding the light valve element 130. For example, in the direction D perpendicular to the light emitting surface 131, the surrounding surface 135 of the light valve element 130 is connected to the cover 110a without gaps through the thermal conductive adhesive 140a, which can have better heat dissipation efficiency. In one embodiment, a compressible material such as a porous foam material, rubber or other material can be disposed between the supporting portion 114a and the base 120. By disposing the compressible material, it is possible to reduce or prevent the thermal conductive adhesive 140 a from leaking from the gap between the support portion 114 a and the base 120 to the outer surface of the optical-mechanical module 100 a .

[0069] In short, through the arrangement of the heat conductive adhesive 140a, the heat generated by the light valve element 130 is transferred to the cover 110a through the surrounding surface 135 through the heat conductive adhesive 140a, which can increase the heat dissipation area of ​​the front end of the light valve module LM, thereby improving the heat dissipation efficiency of the light valve module LM. In addition, because the heat at the front end of the light valve module LM can be quickly conducted away, it helps to reduce the temperature difference between the front end of the light valve module LM and the rear end of the light valve module LM, thereby improving the projection quality of the projection device 10a using this optical machine module 100a.

[0070] Please refer to Figure 1 and Figure 2CIn this embodiment, the optical-mechanical module 100a of the projection device 10a may selectively include a prism group 40. On the transmission path of the image light beam L2, the prism group 40 is disposed between the light valve module LM and the projection lens 30. The prism group 40 is, for example, a total internal reflection prism group, for example, including two prisms. After the illumination light beam L1 is transmitted into the prism group 40, it is transmitted toward the light valve module LM through total internal reflection, and the image light beam L2 from the light valve module LM is transmitted and passed through the prism group 40, and then transmitted toward the projection lens 30, but the present invention does not particularly limit the implementation of the prism group. In addition, the optical-mechanical module 100a also includes a dustproof component 50. The dustproof component 50 is, for example, annular (circular or square, the present invention does not particularly limit), and its material is, for example, an elastic material, such as rubber. The cover body 110a also includes a plurality of supporting protrusions 117a, and the cover body portion 112a has a first surface S1 and a second surface S2 opposite to each other, and the filling hole 115a is, for example, a through hole that passes from the first surface S1 to the second surface S2. A plurality of support portions 114a are located on the first surface S1, and a plurality of supporting protrusions 117a are located on the second surface S2 and abut against the prism group 40, wherein the number of supporting protrusions 117a may be greater than or equal to the number of support portions 114a. The dustproof assembly 50 is located between the second surface S2 of the cover portion 112a and the prism group 40 (i.e., the dustproof assembly 50 directly contacts the second surface S2 and the prism group 40), and is used to seal the cover 110a and the prism group 40, i.e., to maintain the sealing of the light emitting surface 131. Here, the cover portion 112a, the support portion 114a, and the supporting protrusions 117a may be part of the optical machine housing, i.e., the cover portion 112a, the support portion 114a, and the supporting protrusions 117a are an integrally formed structure with the optical machine housing, but is not limited thereto.

[0071] During assembly, the base 120 of the light valve module LM is first locked with the cover 110a (the light valve element 130 is disposed in the accommodation space of the cover 110a), and then the thermal conductive adhesive 140a is filled into the gap between the light valve module LM and the cover 110a through the filling hole 115a on the cover 110a, which can reduce the problem of insufficient contact area between the light valve module LM and the support portion 114a of the cover 110a without affecting the optical quality. Furthermore, since the thermal conductive adhesive 140a is disposed between the light valve module LM and the cover 110a, the dust-tightness requirement between the front end of the light valve module LM and the optical machine is also met simultaneously. In addition, since the present embodiment uses the thermal conductive adhesive 140a to fill the air gap between the light valve module LM and the cover 110a, the thermal resistance between the front end of the light valve module LM and the cover 110a can be effectively reduced, thereby improving the heat dissipation performance. In other words, the thermal conductive adhesive 140 a can significantly increase the heat conduction path between the light valve module LM and the cover 110 a , which means that the heat dissipation area and the heat dissipation amount can be increased to improve the heat dissipation efficiency of the light valve module LM.

[0072] Other embodiments will be listed below for illustration. It must be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein the same numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the previous embodiments, and the following embodiments will not be repeated.

[0073] Figure 3 is a cross-sectional schematic diagram of a projection device according to another embodiment of the present invention. Figure 3 The projection device 10b of this embodiment and Figure 2C The projection device 10a is similar to the projection device 10a, but the main difference between the two is that: in this embodiment, the cover 110b does not include Figure 2C The optical-mechanical module 100b further includes a housing 150 and a housing dustproof assembly 160, including a plurality of supporting protrusions 117a shown. The housing 150 has an assembly port 151 and includes a plurality of housing supporting protrusions 153. The housing dustproof assembly 160 is, for example, annular (circular or square, the present invention is not particularly limited), and its material is, for example, an elastic material, such as rubber. The cover body 110b is disposed on the housing 150, and the opening 113b of the cover body portion 112b is located opposite to the assembly port 151. Here, the caliber of the opening 113b is smaller than the caliber of the assembly port 151. The filling hole 115b is located at the cover body portion 112b of the cover body 110b, and the assembly port 151 exposes the filling hole 115b (that is, the projection range of the assembly port 151 on the cover body portion 112b covers the filling hole 115b and the opening 113b). The support portion 114b is vertically connected to the cover portion 112b, and the extension direction of the housing support protrusion 153 is parallel to the extension direction of the support portion 114b. The housing support protrusion 153 abuts against the prism assembly 40, and the housing dustproof assembly 160 is disposed between the housing 150 and the cover portion 112b of the cover 110b to seal. In addition, the projection device 10b of this embodiment further includes a prism dustproof assembly 60, which is located between the housing 150 and the prism assembly 40 to seal the housing 150 and the prism assembly 40.

[0074] Figure 4 is a cross-sectional schematic diagram of a projection device according to another embodiment of the present invention. Figure 4 The projection device 10c of this embodiment and Figure 2CThe embodiment of the present invention is similar to the projection device 10a of the optical-mechanical module 100c, but the main difference between the two is that: in the present embodiment, the dustproof component 170 of the optical-mechanical module 100c is arranged on the second surface S2 of the cover portion 112a, and is located between the second surface S2 of the cover portion 112a and the prism group 40, so as to seal the cover 110a and the prism group 40. Here, the dustproof component 170 also covers the filling hole 115a located in the cover portion 112a, wherein the filling hole 115a can be sealed by the dustproof component 170, and at the same time, because the prism group 40 is pressed on the dustproof component 170, it can also ensure that the thermal conductive glue 140c will not escape into the optical-mechanical cavity and affect the optical quality. For example, the dustproof component 170 is, for example, annular, and has a plurality of through holes that allow a plurality of supporting protrusions 117a to pass through, and the number of the plurality of through holes is, for example, equal to the number of the plurality of supporting protrusions 117a.

[0075] Figure 5 is a cross-sectional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. Figure 5 The optical-mechanical module 100d of this embodiment is Figure 3 The light-engine module 100b is similar to the light-engine module 100b, but the main difference between the two is that: in this embodiment, the cover portion 112d of the cover 110d is vertically connected to the plurality of support portions 114d, and the plurality of support portions 114d respectively have a stepped surface ST1 on the side facing the heat-conducting adhesive 140d, and the stepped surface ST1 and the surrounding surface 135 are, for example, at least a portion of a complementary shape. The heat-conducting adhesive 140d is filled between the light valve module LM and the cover 110d through the filling hole 115d, wherein in the direction D perpendicular to the light-emitting surface 131, the base 120 and the surrounding surface 135 of the light valve element 130 are connected to the cover 110d without a gap through the heat-conducting adhesive 140d.

[0076] Since the support portion 114d of the present embodiment has a stepped surface ST1, the gap distance between the support portion 114d of the cover 110d and the surrounding surface 135 can be reduced to reduce the amount of thermal conductive adhesive 140d used. In addition, since the heat generated by the light valve module LM is transferred through the thermal conductive adhesive 140d, a shorter heat transfer distance can be provided, which can effectively reduce the thermal resistance value and further help the light valve module LM to dissipate heat.

[0077] Figure 6 is a cross-sectional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. Figure 6 The optical-mechanical module 100e of this embodiment is Figure 3The optical module 100e is similar to the optical module 100b, but the main difference between the two is that: in this embodiment, the optical module 100e also includes a heat conductive plate 180e, which is arranged between the cover 110e (for example, the cover portion 112e) and the base 120. The heat conductive plate 180e has a heat conductive plate opening 181, and the heat conductive plate opening 181 is, for example, located opposite to the light emitting surface 131. The heat conductive plate 180e includes a main body 182 and at least one extension portion (schematically depicting an extension portion 184e) vertically connected to the main body 182. The main body 182 is arranged on (directly in contact with) the cover portion 112a, and the extension portion 184e connects the base 120 and the main body 182. In this way, the thermal conductive glue 140a can directly connect the base 120, the surrounding surface 135 of the light valve element 130, and the heat conductive plate 180e (for example, the main body 182 and the extension portion 184e). For example, in the direction D perpendicular to the light emitting surface 131, the base 120 and the surrounding surface 135 of the light valve element 130 are connected to the heat conducting plate 180e through the heat conducting adhesive 140a without gaps, which can effectively increase the heat dissipation efficiency. It is particularly noted that the extension portion 184e provides the same function as the support portion 114e in supporting the cover portion 112e and the base 120. Therefore, in this embodiment, the extension portion 184e can replace a Figure 3 The support portion 114b shown in FIG. 1 is shown in FIG. 1 , but in other embodiments, the extension portion 184e may be provided separately without affecting the support portion 114b shown in FIG. Figure 3 The arrangement of the support portion 114b shown in the figure still belongs to the scope of protection of the present invention. In another embodiment, the main body 182 of the heat conducting plate 180e can be connected to other heat dissipation components, such as heat dissipation fins, and other heat dissipation devices in the projection system, such as fans, can dissipate heat from the heat dissipation fins so that the temperature of the light valve element 130 meets the required specifications.

[0078] Figure 7 is a cross-sectional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. Figure 6 and Figure 7 The optical-mechanical module 100f of this embodiment is Figure 6 The optical-mechanical module 100e is similar to the optical-mechanical module 100e, but the main difference between the two is that: in this embodiment, the heat conducting plate 180f has a plurality of extension portions 184f, and the plurality of extension portions 184f have a stepped surface ST2 on one side facing the thermal conductive adhesive 140a, which can effectively reduce the usage of the thermal conductive adhesive 140a.

[0079] Figure 8 is a three-dimensional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. Figure 8 The optical-mechanical module 100g of this embodiment is Figure 3The optical-mechanical module 100b is similar to the optical-mechanical module 100b, but the main difference between the two is that: in this embodiment, the filling hole 115g is located on the support portion 114g of the cover 110g vertically connected to the cover portion 112g, which can avoid the risk of the heat-conducting glue 114g volatilizing due to heat if the filling hole 115g is not sealed well, causing the volatile substances to escape into the optical-mechanical cavity and adhere to the optical elements (such as the prism group), thereby reducing the brightness or quality of the picture. In another embodiment, the filling hole 115g can be located on the connecting portion.

[0080] Fig. 9 is a cross-sectional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. Fig. 9 The optical-mechanical module 100h of this embodiment is Figure 3 The optical-mechanical module 100h is similar to the optical-mechanical module 100b, but the main difference between the two is that: in the present embodiment, the optical-mechanical module 100h also includes a compressible material 190, and at least a portion of the compressible material 190 is disposed between the light-emitting surface 131 of the light valve element 130 and the periphery of the cover portion 112a of the cover body 110a and is in a ring shape. The compressible material 190 is, for example, a porous foam material, rubber or other material with a low thermal conductivity. Through the provision of the compressible material 190, the thermally conductive adhesive 140a will not escape to the light-emitting surface 131 of the light valve element 130, causing a decrease in imaging quality. From the perspective of the light-emitting surface 131, the compressible material 190 can be a full-circle annular structure, which can effectively block the thermally conductive adhesive 140a and the light-emitting surface 131, and can ensure that the thermally conductive adhesive 140a will not overflow to the light-emitting surface 131 in a 360-degree direction and affect the imaging. Here, by Fig. 9 From the cross-sectional view, the thermal conductive adhesive 140a may be L-shaped, or, in other embodiments, the thermal conductive adhesive 140a may be a sheet-shaped straight line substantially parallel to the light emitting surface 131, but is not limited thereto.

[0081] Fig. 10A It is a partial three-dimensional schematic diagram of an optical-mechanical module according to another embodiment of the present invention. Fig. 10B is along Fig. 10A Please refer to the cross-sectional diagram of line II-II'. Fig. 9 The optical-mechanical module 100i of this embodiment is Figure 3 The optical-mechanical module 100b is similar to the optical-mechanical module 100b, but the main difference between the two is that: in the present embodiment, the filling hole 115i1 of the optical-mechanical module 100i is located on the cover portion 112i of the cover body 110i, the filling hole 115i2 is located on the supporting portion 114i of the cover body 110i, and the filling hole 115i3 is located on the connecting portion 116i of the cover body 110i.

[0082] In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the design of the optical-mechanical module of the present invention, a thermally conductive adhesive is disposed between the light valve, the base, and the cover body, wherein the thermally conductive adhesive seamlessly covers the base, the surrounding surface of the light valve, and the multiple connection parts and the multiple support parts of the cover body, and in a direction perpendicular to the light emitting surface, the base and the surrounding surface of the light valve are seamlessly connected to the cover body through the thermally conductive adhesive. Thereby, the heat dissipation area of ​​the front end of the light valve can be increased, and the heat dissipation efficiency of the light valve can be improved. In addition, because the heat at the front end of the light valve can be quickly extracted, it helps to reduce the temperature difference between the front end and the rear end of the light valve, thereby improving the projection quality of the projection device using this optical-mechanical module.

[0083] However, the above is only a preferred embodiment of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. That is, all simple equivalent changes and modifications made according to the claims and the content of the invention of the present invention are still within the scope of the patent of the present invention. In addition, any embodiment or claim of the present invention does not need to achieve all the purposes, advantages or features disclosed by the present invention. In addition, the abstract and title (invention name) are only used to assist in the retrieval of patent documents, and are not used to limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the name of the element or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit on the number of elements.

Claims

1. An optical-mechanical module, characterized in that: The optical-mechanical module comprises a cover body, a light valve module and a thermally conductive adhesive, wherein: The cover body has at least one filling hole and includes a cover body portion and a plurality of supporting portions and a plurality of connecting portions vertically connected to the cover body portion, the cover body portion has an opening, and the plurality of connecting portions connect the plurality of supporting portions separated from each other; The light valve module comprises a base and a light valve element, wherein the light valve element is disposed on the base, and the base is disposed on the plurality of supporting portions of the cover, the light valve element has a light emitting surface and a peripheral surface connected to the light emitting surface, the light emitting surface corresponds to the opening and is spaced apart from the cover, the plurality of connecting portions surround the peripheral surface, and the at least one filling hole is connected to the peripheral surface of the light valve element and the space between the cover; and The thermally conductive adhesive is disposed between the light valve module and the cover, wherein the thermally conductive adhesive connects the base, the surrounding surface, the cover, the plurality of connecting portions, and the plurality of supporting portions.

2. The optical-mechanical module according to claim 1, wherein: The at least one filling hole is located on the cover portion, on the plurality of connecting portions, or on at least one of the plurality of supporting portions.

3. The optical-mechanical module according to claim 1, wherein: The optical-mechanical module further comprises a housing, wherein: The shell has an assembly opening, the cover is arranged on the shell, and the opening is aligned with the assembly opening.

4. The optical-mechanical module according to claim 3, characterized in that: The optical-mechanical module further includes a housing dustproof component, wherein: The shell dustproof component is arranged between the shell and the cover body portion of the cover body.

5. The optomechanical module according to claim 1, wherein: The cover body further comprises a plurality of supporting protrusions. The cover body has a first surface and a second surface opposite to each other. The plurality of supporting portions are located on the first surface, and the plurality of supporting protrusions are located on the second surface.

6. The optical-mechanical module according to claim 5, characterized in that: The optical-mechanical module further includes a dustproof component, wherein: The dustproof component is configured on the second surface of the cover body, the at least one filling hole is located in the cover body, and the dustproof component covers the at least one filling hole.

7. The optomechanical module according to claim 1, wherein: The peripheral surface of the light valve element is a stepped surface.

8. The optomechanical module according to claim 1, wherein: The plurality of support portions of the cover body respectively have a stepped surface on a side facing the thermal conductive adhesive.

9. The optomechanical module according to claim 1, wherein: The optical-mechanical module further comprises a heat conducting plate, wherein: The heat conducting plate is arranged between the cover and the base, and comprises a main body and at least one extending portion vertically connected to the main body. The main body is arranged on the cover, and the at least one extending portion is connected to the base. In a direction perpendicular to the light emitting surface, the base and the surrounding surfaces of the light valve element are connected to the heat conducting plate without a gap through the heat conducting adhesive.

10. The optomechanical module according to claim 9, characterized in that: A side of the at least one extension portion facing the thermal conductive adhesive has a stepped surface.

11. The optomechanical module according to claim 1, wherein: The optomechanical module further comprises a compressible material, wherein: At least a portion of the compressible material is disposed between the light emitting surface of the light valve element and the periphery of the cover portion of the cover body and is in a ring shape.

12. The optomechanical module according to claim 1, wherein: The thermally conductive adhesive comprises a light-curing material or a heat-curing material, and the thermal conductivity of the thermally conductive adhesive is greater than or equal to 2 W / (m·K).

13. A projection device, characterized in that: The projection device comprises a light source module, an optical machine module and a projection lens, wherein: The light source module is used to provide an illumination beam; The optical-mechanical module comprises a cover body, a light valve module and a thermally conductive adhesive, wherein: The cover body has at least one filling hole and includes a cover body portion and a plurality of supporting portions and a plurality of connecting portions vertically connected to the cover body portion, the cover body portion has an opening, and the plurality of connecting portions connect the plurality of supporting portions separated from each other; The light valve module is arranged on the transmission path of the illumination light beam to convert the illumination light beam into an image light beam, the light valve module comprises a base and a light valve element, the light valve element is arranged on the base, and the base is arranged on the multiple supporting parts of the cover body, the light valve element has a light emitting surface and a surrounding surface connected to the light emitting surface, and the light emitting surface corresponds to the opening and is arranged at intervals with the cover body, the multiple connecting parts surround the surrounding surface, and the at least one filling hole is connected to the surrounding surface of the light valve element and the space between the cover body; and The thermally conductive adhesive is disposed between the light valve module and the cover, wherein the thermally conductive adhesive connects the base, the surrounding surface, the cover, the plurality of connecting portions, and the plurality of supporting portions; and The projection lens is disposed on the transmission path of the image light beam, and is used for projecting the image light beam out of the projection device.

14. The projection device according to claim 13, characterized in that: The optical-mechanical module further includes a prism group, and the prism group is on the transmission path of the image light beam and is disposed between the light valve module and the projection lens.

15. The projection device according to claim 14, characterized in that: The optical-mechanical module also includes a dustproof component, and the cover body also includes a plurality of supporting protrusions. The cover body has a first surface and a second surface opposite to each other, the plurality of supporting portions are located on the first surface, and the plurality of supporting protrusions are located on the second surface and abut against the prism group, and the dustproof component is located between the cover body and the prism group.

16. The projection device according to claim 14, characterized in that: The optical-mechanical module further includes a housing and a housing dustproof component, wherein: The housing has an assembly opening and includes a plurality of housing support protrusions, the opening is aligned with the assembly opening, and the housing support protrusions abut against the prism assembly; and The shell dustproof component is arranged between the shell and the cover body portion of the cover body.

17. The projection device according to claim 16, characterized in that: The optical-mechanical module further comprises a prism dustproof component, which is located between the housing and the prism group.

Images