Light machine assembly and projector

Abstract

The embodiment of the utility model provides a light machine assembly which comprises a shell, a prism and an elastic piece, the shell comprises a first side plate, a second side plate and a bottom plate, the bottom plate is provided with a bearing face, the bottom plate is provided with a penetrating light hole, the prism is borne on the bearing face and corresponds to the light hole, and the prism is provided with a first surface and a second surface which are adjacent to each other. The first surface and the first fixing surface are oppositely arranged, the second surface and the second fixing surface are oppositely arranged, mucilage glue is arranged between the bearing surface and the prism, between the first fixing surface and the first surface and between the second fixing surface and the second surface, and the elastic piece is detachably connected with the shell and abuts against the surface, away from the bottom plate, of the prism. The elastic sheets and the mucilage glue are matched with each other, so that the prism can be fixed in the first direction, the second direction and the third direction. The prism is completely fixed, so that the position deviation of the prism is avoided, the light adjusting effect of the prism is ensured, and the reliability of the light machine assembly is improved. The embodiment of the utility model provides a projector.

Description

Technical Field

[0001] The present application relates to the technical field of projection equipment, and in particular to an optical-mechanical assembly and a projector. Background Art

[0002] With the continuous development of projection technology, projectors are becoming increasingly widely used. Projectors feature a prism that modulates light to suit subsequent modulation or imaging needs. However, existing projectors often lack sufficient prism fixation, resulting in incomplete prism fixation. If the projector is subjected to external impacts or knocks, the prism may shift position, causing the prism's light modulation to deviate, resulting in out-of-focus projections and shifted imaging ranges. Utility Model Content

[0003] The embodiments of the present application provide an optical-mechanical assembly and a projector to at least partially improve the above-mentioned technical problems.

[0004] The embodiments of the present application are implemented through the following technical solutions.

[0005] On the one hand, an embodiment of the present application provides an optical-mechanical assembly, including a shell, a prism and a spring plate, the shell including a first side panel, a second side panel and a bottom panel, the first side panel and the second side panel are adjacently arranged, the bottom panel has a bearing surface, the first side panel has a first fixing surface facing the interior of the shell, the second side panel has a second fixing surface facing the interior of the shell, the bottom panel is provided with a through light-transmitting hole, the prism is supported on the bearing surface and corresponds to the light-transmitting hole, the prism has adjacent first and second surfaces, the first surface is arranged opposite to the first fixing surface, and the second surface is arranged opposite to the second fixing surface, adhesive is provided between the bearing surface and the prism, between the first fixing surface and the first surface, and between the second fixing surface and the second surface, the spring plate is detachably connected to the shell and abuts the surface of the prism away from the bottom panel.

[0006] In one embodiment, when the elastic sheet is pressed against the prism, a first elastic force acting along a second direction and a second elastic force acting along a third direction are applied to the prism, and the second direction and the third direction intersect.

[0007] In one embodiment, the shell also includes a third side panel, which is spaced apart from the first side panel along the first direction, and the third side panel has a third fixed surface facing the interior of the shell. The prism also has a third surface opposite to the first surface, and the third surface is arranged opposite to the third fixed surface. Glue is provided between the third fixed surface and the third surface, and the first direction, the second direction and the third direction intersect.

[0008] In one embodiment, a first adhesive is provided between the prism and the supporting surface, a second adhesive is provided between the first fixing surface and the first surface of the prism, between the second fixing surface and the second surface of the prism, and / or between the third fixing surface and the third surface of the prism, the hardness of the first adhesive is greater than the hardness of the second adhesive, and the first adhesive is used to support the prism in the third direction.

[0009] In one embodiment, the prism includes a first prism and a second prism, the first surface is arranged on the first prism and the second prism, the third surface is arranged on the first prism and the second prism, the first prism has a first inclined surface, the second prism has a second inclined surface that cooperates with the first inclined surface, the first inclined surface and the second inclined surface are in contact with each other, the first prism is supported on the supporting surface, and the spring is pressed against the surface of the second prism away from the first prism.

[0010] In one embodiment, the first adhesive is arranged between the first prism and the supporting surface, and the second adhesive is arranged between the first fixing surface and the first surface of the first prism, between the second fixing surface and the second surface of the first prism and / or between the third fixing surface and the third surface of the first prism.

[0011] In one embodiment, a third adhesive is provided between the first fixing surface and the first surface of the second prism and / or between the second fixing surface and the third surface of the second prism, and the hardness of the third adhesive is less than that of the second adhesive.

[0012] In one embodiment, the spring piece includes a mounting piece and an elastic arm. The mounting piece is arranged on the first side plate and the second side plate. The mounting piece has a through hole, which corresponds to the light-transmitting hole. One end of the elastic arm is connected to the mounting piece, and the other end abuts against the surface of the second prism away from the first prism.

[0013] In one embodiment, a surface of the second prism away from the first prism is tilted relative to the mounting plate.

[0014] In one embodiment, the elastic sheet further includes a bent portion, the bent portion is connected to the mounting sheet, and the bent portion blocks at least a portion of a surface of the second prism away from the first prism.

[0015] On the other hand, an embodiment of the present application provides a projector including the above-mentioned optical-mechanical assembly.

[0016] In the optical-mechanical assembly provided by an embodiment of the present application, a prism is carried on a carrying surface, and adhesive is provided between the first fixing surface and the first surface and between the second fixing surface and the second surface, and the adhesive can fix the prism in the first direction and the second direction. The spring can abut the surface of the prism away from the bottom plate, and adhesive is provided between the carrying surface and the prism. The spring cooperates with the adhesive provided between the carrying surface and the prism to fix the prism in a third direction. The first direction, the second direction and the third direction intersect. The spring and the adhesive cooperate with each other to fix the prism in the first direction, the second direction and the third direction. The prism is completely fixed to prevent it from positional displacement, ensure the prism's adjustment effect on light, and improve the reliability of the optical-mechanical assembly.

[0017] In a projector using the above-mentioned optomechanical assembly, the prism is fixed in the housing of the optomechanical assembly, and the reliability of the prism is improved to ensure the imaging stability and safety of the projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the structure of a projector proposed in an embodiment of the present application;

[0020] Figure 2 A schematic structural diagram of an optical-mechanical assembly proposed in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the exploded structure of an optical-mechanical assembly proposed in an embodiment of the present application;

[0022] Figure 4 A schematic structural diagram of an optical-mechanical assembly from another perspective proposed in an embodiment of the present application;

[0023] Figure 5 A cross-sectional view of the optical-mechanical assembly from another perspective according to an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the exploded structure of a prism proposed in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the structure of a prism and adhesive proposed in an embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of the structure of the prism and adhesive from another perspective proposed in an embodiment of the present application;

[0027] Figure 9 A schematic structural diagram of a spring element proposed in an embodiment of the present application;

[0028] Figure 10 A schematic structural diagram of an elastic arm proposed in an embodiment of the present application;

[0029] Figure 11 This is a schematic structural diagram of another optical-mechanical assembly proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application.

[0032] This embodiment of the application provides a projector 1, see Figure 1 The projector 1 can be a liquid crystal display (LCD) projector, a digital light processing (DLP) projector, a liquid crystal on silicon (LCOS) projector, etc. This embodiment does not limit the type and usage scenario of the projector 1.

[0033] In one embodiment, the projector 1 may include a light source 10 and an optomechanical assembly 20. The light source 10 may be built into the optomechanical assembly 20 or be disposed in other devices. The light source 10 is used to emit light, and the optomechanical assembly 20 is located in the optical path of the light source 10. The optomechanical assembly 20 can adjust and process the light so that the light can meet the requirements of subsequent modulation or propagation. Exemplarily, the light source 10 may be a light emitting diode (LED) or a laser diode (LD), and the light emitted therefrom may be corresponding fluorescent light or laser light, which may be selected and designed according to specific implementation requirements, and is not limited in this embodiment.

[0034] In addition, the optical-mechanical assembly 20 can also be applied to wearable devices, medical imaging, vehicle-mounted equipment, etc., which will not be described in detail in this embodiment.

[0035] Please also refer to Figure 2 as well as Figure 3 The optical-mechanical assembly 20 may include a housing 21 , a prism 22 and a spring 23 . The prism 22 is installed in the housing 21 . The spring 23 is connected to the housing 21 and abuts against the prism 22 .

[0036] Housing 21 may be a metal housing, which has properties such as high strength, high hardness, and good thermal conductivity. This metal housing enhances the protection of optomechanical assembly 20, preventing external shocks and vibrations from affecting the safe operation of prism 22. Furthermore, as prism 22 receives light, it also absorbs heat from the light, causing its temperature to rise. The metal housing absorbs this heat and dissipates it into the surrounding environment, reducing the operating temperature of prism 22 and improving the safety of optomechanical assembly 20.

[0037] Please also refer to Figure 3 as well as Figure 4 The housing 21 may include a first side panel 211, a second side panel 212, and a bottom panel 213. The first side panel 211 has a first fixing surface 214 facing the interior of the housing 21, and the second side panel 212 has a second fixing surface 215 facing the interior of the housing 21. The first fixing surface 214 and the second fixing surface 215 may be arranged to intersect so that they can be located at different orientations of the prism 22. For example, the first side panel 211 and the prism 22 are arranged along the first direction (such as Figure 3 The second side plate 212 and the prism 22 are distributed along the second direction (as shown by x in FIG. Figure 3 As shown in y in FIG, the first fixing surface 214 and the second fixing surface 215 can abut against the prism 22 in different directions to achieve the effect of fixing the prism 22. The first direction and the second direction intersect.

[0038] The bottom plate 213 has a bearing surface 216, which faces the interior of the housing 21. The bearing surface 216 can bear the prism 22 located in the housing 21. For example, the bottom plate 213 and the prism 22 are aligned along the third direction (eg Figure 3 The bearing surface 216 can abut against the prism 22 along another direction, further improving the fixing effect of the prism 22. The first direction, the second direction and the third direction intersect.

[0039] Also, see Figure 5The bottom plate 213 is provided with a through-hole 217, which is used to transmit light, allowing the light to exit or enter the prism 22. The shape of the light hole 217 can be rectangular, circular, etc., and this embodiment is not limited thereto. In addition, the size and shape of the light hole 217 can be limited based on implementation requirements, implementation scenarios, etc. The light hole 217 can play a role in adjusting the imaging range of light, thereby reducing the need for subsequent optical components such as the aperture.

[0040] In another embodiment, the housing 21 may further include a third side panel 219, with the bottom panel 213 connected between the first side panel 211 and the third side panel 219. The first side panel 211 and the third side panel 219 are spaced apart along the first direction, and the shapes and sizes of the first side panel 211 and the third side panel 219 may be identical. For example, the first side panel 211 and the third side panel 219 may be symmetrically arranged. The third side panel 219 has a third fixing surface 2191 facing the interior of the housing 21. The first fixing surface 214 and the third fixing surface 2191 are correspondingly arranged, and the first fixing surface 214 and the third fixing surface 2191 cooperate with each other to fix the prism 22 between the first side panel 211 and the third side panel 219 so that the prism 22 is completely constrained in the first direction.

[0041] In this example, please refer to Figure 3 The prism 22 can be a total reflection reverse (RTIR) prism. The RTIR prism can be formed by gluing a right-angle prism and a spherical prism, and the surface where the two are glued together is the gluing surface. When light is incident vertically on the surface of the prism 22, the light will enter the prism 22 along the original direction, and will be totally reflected on the gluing surface and emitted from the other surface, thereby changing the propagation direction of the light. This total reflection process can effectively reduce the loss of light and improve the efficiency of light energy utilization. Among them, the spherical lens is affected by its own spherical curvature and has the effect of producing different optical effects, such as diverging or converging light. This embodiment does not impose specific restrictions on the type, shape, structure, etc. of the prism 22. For example, in some other cases, the prism 22 can also be a total internal reflection (TIR) prism 22. For the convenience of subsequent writing, the following content is described in terms of the RTIR prism.

[0042] See also Figure 5 The prism 22 is carried on the carrying surface 216 and corresponds to the light-transmitting hole 217. Light can be incident on the prism 22 through the light-transmitting hole 217 or emitted from the prism 22 along the light-transmitting hole 217 to the outside of the optical-mechanical assembly 20. The prism 22 can adjust the light incident on or emitted from the light-transmitting hole 217 so that the light meets the subsequent usage requirements.

[0043] The prism 22 has an adjacent first surface 221 and a second surface 222. The first surface 221 is arranged opposite to the first fixing surface 214, and the second surface 222 is arranged opposite to the second fixing surface 215. Therefore, the prism 22 can be constrained by the first side plate 211 and the second side plate 212 so that the prism 22 is constrained in the first direction and the second direction.

[0044] In addition, the prism 22 can also have a third surface 223 opposite to the first surface 221. The third surface 223 is arranged opposite to the third fixed surface 2191. The third surface 223 and the third fixed surface 2191 cooperate with each other so that the prism 22 can be fixed between the first side panel 211 and the third side panel 219, thereby improving the stability of the prism.

[0045] In a more specific embodiment, please refer to Figure 5 as well as Figure 6 The prism 22 may include a first prism 224 and a second prism 225. The first prism 224 may be a right-angle lens, and the second prism 225 may be a spherical lens. The first surface 221 is provided on the first prism 224 and the second prism 225. The second surface 222 is provided on the surface of the first prism 224 away from the second prism 225. The third surface 223 is provided on the first prism 224 and the second prism 225. Thus, the first prism 224 and the second prism 225 may be constrained in the first direction and the second direction by the first side plate 211, the second side plate 212, and the third side plate 219.

[0046] The first prism 224 has a first inclined surface 2241, and the second prism 225 has a second inclined surface 2251 that cooperates with the first inclined surface. The first inclined surface 2241 and the second inclined surface 2251 are correspondingly arranged. The first inclined surface 2241 and the second inclined surface 2251 are attached to each other to form a bonding surface. For example, the first inclined surface 2241 can be bonded to the second inclined surface 2251 to improve the connection strength between the first prism 224 and the second prism 225.

[0047] The first prism 224 is supported on the supporting surface 216, and the spring piece 23 is pressed against the surface of the second prism 225 away from the first prism 224. In addition, the first prism 224 and the second prism 225 are in contact with each other, so that the first prism 224 and the second prism 225 can be completely constrained in the third direction by the spring piece 23 and the bottom plate 213.

[0048] In another embodiment, the first prism 224 may be a spherical lens, and the second prism 225 may be a right-angle lens, which is not limited in this embodiment.

[0049] In order to further improve the fixing effect of the prism 22 and to avoid direct collision between the prism 22 and the housing 21, the service life of the prism 22 is increased. Figure 4 、 Figure 7 as well as Figure 8 Adhesive 24 is provided between the bearing surface 216 and the prism 22, between the first fixing surface 214 and the first surface 221, and between the second fixing surface 215 and the second surface 222. Adhesive 24 adheres to the surface of the housing 21 and the surface of the prism 22, preventing relative movement between the prism 22 and the housing 21. This maintains the prism 22's light regulation effect and prevents the projected image of the projector 1 from being out of focus or having its imaging range shifted. Furthermore, adhesive 24 exhibits a certain degree of elasticity. The adhesive 24 adhered between the housing 21 and the prism 22 provides a buffering effect, preventing collisions between the housing 21 and the prism 22 and ensuring safe use of the prism 22. Furthermore, adhesive 24 may be provided between the third fixing surface 2191 and the third surface 223 to further enhance the securing effect between the prism 22 and the housing 21, ensuring safe use of the prism 22. Adhesive 24 also makes the optomechanical assembly 20 more adaptable to in-vehicle operating environments and testing conditions.

[0050] Preferably, the adhesive 24 can be disposed on the edge of the surface of the prism 22. For example, the adhesive 24 between the first fixing surface 214 and the first surface 221 is disposed at the edge of the first surface 221. This arrangement can not only secure the prism 22, but also prevent it from obstructing the transmission of light on the surface of the prism 22, thereby improving the performance of the prism 22.

[0051] For easy observation, Figure 7 as well as Figure 8 The general shape and position of the adhesive 24 are shown. It is understood that the adhesive 24 has a certain degree of fluidity and elasticity, and thus the shape and position of the adhesive 24 may vary depending on the application location, its own material, the dispensing process, etc., and this embodiment does not specifically limit this. For example, the structure of the adhesive 24 can be roughly cylindrical, spherical, or conical, etc., which are not enumerated here.

[0052] In one embodiment, a first adhesive 241 is disposed between the prism 22 and the supporting surface 216, and a second adhesive 242 is disposed between the first fixing surface 214 and the first surface 221 of the prism 22, between the second fixing surface 215 and the second surface 222 of the prism 22, and / or between the third fixing surface 2191 and the third surface 223 of the prism 22. More specifically, the first adhesive 241 is disposed between the first prism 224 and the supporting surface 216, and is used to support the prism 22 in the third direction. The second adhesive 242 is arranged between the first fixing surface 214 and the first surface 221 of the first prism 224, between the second fixing surface 215 and the second surface 222 of the first prism 224, and / or between the third fixing surface 2191 and the third surface 223 of the first prism 224. This arrangement can ensure the fixing effect between the first prism 224 and the first side panel 211 and the second side panel 212, and also avoid collision between the first prism 224 and the second prism 225 and the first side panel 211 or the second side panel 212.

[0053] A third adhesive is disposed between the first fixing surface 214 and the first surface 221 of the second prism 225 and / or between the third fixing surface 2191 and the third surface 223 of the second prism 225. The third adhesive has a lower hardness than the second adhesive. The third adhesive 243 can assist in securing the second prism 225. The third adhesive 243 can prevent the second prism 225 from colliding with the first side panel 211 and the third side panel 219, which could cause the first prism 224 and the second prism 225 to separate or damage the second prism 225.

[0054] The second adhesive 242 has a lower hardness than the first adhesive 241, and the third adhesive 243 has a lower hardness than the second adhesive 242. Compared to the second and third adhesives 242, 243, the first adhesive 241 is subject to the weight of the prism 22 and the squeezing force of the spring 23. The higher hardness of the first adhesive 241 improves its ability to support the prism 22. To prevent the first and second prisms 224, 225 from colliding with the first and third side panels 211, 219, the second adhesive 242 has greater elasticity than the first adhesive 241, providing a certain cushioning effect. After the first prism 224 is secured, the second prism 225 connected to it is also secured. The third adhesive 243 can assist in fixing the second prism 225 . The fixing requirements for the third adhesive 243 are not high, and the hardness of the third adhesive 243 can be set lower to have sufficient buffering capacity to prevent the second prism 225 from being bumped.

[0055] For example, the first adhesive 241 can be configured as ultraviolet (UV) heat-curing glue, the second adhesive 242 can be configured as acrylic glue, and the third adhesive 243 can be configured as silicone or polyurethane glue. This configuration allows the first adhesive 241, the second adhesive 242, and the third adhesive 243 to have different hardnesses, thereby adapting to the requirements of different implementation locations. This allows the adhesive 24 in different locations to play different roles, thereby improving the fixing effect of the prism 22.

[0056] In other cases, this embodiment can also select adhesives 24 with different thermal expansion coefficients based on specific locations to prevent excessive changes in the shape and relative position of the adhesive 24 after heating, which could affect light transmission. For example, the prism 22 can have an incident surface for incident light. Compared to other surfaces, the incident surface can absorb more heat from the light. Therefore, the adhesive 24 disposed on the incident surface can be configured with an adhesive with a lower thermal expansion coefficient to prevent excessive shape changes and ensure effective light transmission. This embodiment will not be described in detail.

[0057] It is understandable that the number of the first adhesive 241, the second adhesive 242 and the third adhesive 243 can be set to multiple. In other words, the dispensing positions of the first adhesive 241, the second adhesive 242 and the third adhesive 243 can be configured in multiple positions to increase the bonding area between the prism 22 and the shell 21, and further improve the fixing effect of the prism 22.

[0058] In this example, see Figure 3 The spring 23 can be roughly sheet-shaped. The sheet-shaped spring 23 has a larger contact area with the prism 22 and the housing 21. The spring 23 can be configured as a metal spring, such as a copper spring or a stainless steel spring. Metal springs have good deformation ability and high strength.

[0059] The spring clip 23 is detachably connected to the housing 21 and can be connected to the housing 21 via a threaded connection, a snap-fit connection, or other methods. Taking a threaded connection as an example, the optical-mechanical assembly 20 further includes one or more fasteners 235. The first side panel 211 and / or the second side panel 212 and / or the third side panel 219 are provided with threaded holes (not shown). The fasteners 235 have external threads that are disposed in the threaded holes. The spring clip 23 is correspondingly provided with one or more mounting holes 236. The threaded holes, fasteners 235, and mounting holes 236 are correspondingly provided. The fasteners 235 can be inserted into the mounting holes 236 and threadedly connected thereto to secure the spring clip 23 within the housing 21, thereby improving the installation stability of the prism 22.

[0060] In addition, see Figure 3The first side plate 211 and / or the second side plate 212 and / or the third side plate 219 are convexly provided with a positioning portion 218, and the spring piece 23 is provided with one or more positioning holes 231. The positioning portion 218 is embedded in the positioning hole 231 so that the spring piece 23 can be accurately installed in the shell 21 to avoid the spring piece 23 being misplaced or not installed firmly, etc., which may cause the prism 22 to be not completely fixed.

[0061] The spring clip 23 abuts the surface of the prism 22 away from the base plate 213. The spring clip 23 and the base plate 213 are spaced apart along the third direction. The spring clip 23 cooperates with the base plate 213 to constrain the prism 22 between them, completely constraining the prism 22 in the third direction. Furthermore, the spring clip 23 can pre-tighten the prism 22 within the housing 21. Specifically, when the spring clip 23 is connected to the housing 21, the spring clip 23 is squeezed by the prism 22 and deforms, generating an elastic force. This elastic force acts to pre-tighten the prism 22, that is, the elastic force acts on the prism 22, pre-tightening it within the housing 21. When the optical-mechanical assembly 20 is subjected to an external force in the third direction, the elastic force generated by the spring clip 23 can resist the external force, preventing the prism 22 from shifting.

[0062] In this example, please continue to refer to Figure 3 as well as Figure 9 The spring piece 23 may include a mounting piece 232 and an elastic arm 234 . The mounting piece 232 is connected to the housing 21 . The mounting piece 232 and the elastic arm 234 are connected to each other. The elastic arm 234 abuts against the prism 22 .

[0063] The mounting piece 232 is generally sheet-shaped and is disposed on the first side panel 211 and the second side panel 212 so that the spring piece 23 is mounted on the first side panel 211 and the second side panel 212. The mounting piece 232 can be connected to the first side panel 211 and the second side panel 212 by means of a threaded connection, a snap-fit connection, or the like, so that the mounting piece 232 can be detachably connected to the first side panel 211 and the second side panel 212. This detachable arrangement facilitates replacement of the mounting piece 232, thereby reducing the maintenance cost of the optical-mechanical assembly 20. This embodiment will not be described in detail. The mounting piece 232 has a through hole 237, which corresponds to the light-transmitting hole 217. For example, the aperture size and shape of the through hole 237 are the same as those of the light-transmitting hole 217, which is not limited in this embodiment.

[0064] In addition, the mounting piece 232 can also be provided on the third side plate 219 to further improve the fixing effect of the spring piece 23. Furthermore, the mounting piece 232 can be connected to the third side plate 219 by means of threaded connection, snap connection, etc., which will not be described in detail in this embodiment.

[0065] The elastic arm 234 has good elasticity and high strength. The elastic arm 234 is rod-shaped, and the rod-shaped elastic arm 234 is more easily deformed. One end of the elastic arm 234 is connected to the mounting plate 232, and the other end abuts the surface of the second prism 225 away from the first prism 224. The deformation of the elastic arm 234 generates an elastic force, which acts on the second prism 225 to fix the first prism 224 and the second prism 225 between the mounting plate 232 and the base plate 213. In addition, the end of the elastic arm 234 away from the prism 22 is connected to the hole wall of the through hole 237 of the mounting plate 232. The abutment area of the elastic arm 234 on the prism 22 is small. While ensuring that the prism 22 is fixed, it can also prevent the elastic arm 234 from blocking the prism 22.

[0066] More specifically, see Figure 10 The elastic arm 234 may include a first end 2341 and a second end 2342 opposite to each other. The first end 2341 is connected to the mounting plate 232. The second end 2342 may include a first connecting end 2343 and a second connecting end 2344. One end of the first connecting end 2343 is connected to the first end 2341, and the other end is bent toward the prism 22. One end of the second connecting end 2344 is connected to the end of the first connecting end 2343 away from the first end 2341, and the other end is bent toward the side away from the prism 22. The first connecting end 2343 and the second connecting end 2344 form a roughly "V"-shaped structure. This "V"-shaped structure can provide a certain amount of pressure, which can force the prism 22 to press against the supporting surface 216 in a direction close to the base plate 213, thereby limiting the movement of the prism 22 in the third direction.

[0067] In addition, the elastic arm 234 can be integrated with the mounting piece 232. For example, the elastic arm 234 can be stamped and formed integrally with the mounting piece 232. The connection between the integrated elastic arm 234 and the mounting piece 232 is more secure, thereby ensuring the structural stability of the mounting piece 232 and improving the reliability of the optical-mechanical assembly 20.

[0068] In this example, please refer to Figure 5When the spring piece 23 presses against the second prism 225, it applies a first elastic force acting in the second direction and a second elastic force acting in the third direction to the prism 22. In one embodiment, the surface of the second prism 225 facing away from the first prism 224 is tilted relative to the mounting plate 232. In other words, the distance between the second prism 225 and the mounting plate 232 gradually decreases along the second direction. As the elastic arm 234 abuts the surface of the second prism 225 facing away from the first prism 224, it is tilted accordingly, causing varying degrees of deformation on both sides of the elastic arm 234. This tilted setting allows the elastic arm 234 to apply a first elastic force acting along the second direction to the prism 22 while applying a second elastic force acting along the third direction to the prism 22. An adhesive 24 is provided between the prism 22 and the shell 21, for example, a second adhesive 242 is provided between the second fixing surface 215 and the second surface 222 of the prism 22. The adhesive 24 cooperates with the elastic arm 234 that generates the first elastic force to completely fix the prism 22 in the second direction.

[0069] Understandable, please refer to Figure 5 、 Figure 7 as well as Figure 8 A second adhesive 242 is disposed between the first fixing surface 214 and the first surface 221 of the first prism 224, and between the third fixing surface 2191 and the third surface 223 of the first prism 224. The second adhesive 242 can completely secure the prism 22 in the first direction. The elastic arm 234 of the spring 23 generates a first elastic force acting in the second direction. The second adhesive 242 is disposed between the second fixing surface 215 and the second surface 222 of the first prism 224. The first elastic force interacts with the second adhesive 242 to completely secure the prism 22 in the second direction. The elastic arm 234 of the spring 23 generates a second elastic force acting in the third direction. The second elastic force interacts with the supporting force of the base plate 213 and the first adhesive 241 disposed on the base plate 213 to completely secure the prism 22 in the third direction. Thus, the first prism 224 and the second prism 225 are completely fixed by the spring 23 and the housing 21 , preventing the prism 22 from shifting in any direction, ensuring the light adjustment effect of the prism 22 , and improving the reliability of the optical-mechanical assembly 20 .

[0070] In this example, see Figure 3 as well as Figure 9, the number of elastic arms 234 is multiple, for example, the number of elastic arms 234 can be 2, 3, 4..., and this embodiment does not impose any specific restrictions. The multiple elastic arms 234 are arranged at intervals. The multiple elastic arms 234 are respectively in contact with different areas of the prism 22, so that the elastic force of the elastic arms 234 is more evenly distributed, and at the same time, the prism 22 can be fixed with sufficient elastic force. In addition, the multiple elastic arms 234 are arranged at intervals along the hole wall of the through hole 237 of the shrapnel 23, and the length of each elastic arm 234 should not be set too long to avoid the elastic arm 234 blocking the central area of the surface of the second prism 225 away from the first prism 224, so as to ensure smooth transmission of light and ensure the integrity of light transmission. Schematically, the length of the elastic arm 234 can be 1mm-10mm, which is selected and designed according to the specific implementation situation, and this embodiment does not impose any restrictions.

[0071] Understandably, due to the tilted arrangement of the surface of the second prism 225 away from the first prism 224 relative to the mounting plate 232, the multiple elastic arms 234 can exert a first elastic force acting in the second direction and a second elastic force acting in the third direction on the prism 22, thereby completely securing the prism 22. This configuration also disperses the elastic force of the spring 23 on the prism 22, preventing stress concentration and damage to the prism 22.

[0072] In a more specific embodiment, see Figure 9 The plurality of elastic arms 234 may include a first elastic arm 2345 and a second elastic arm 2346. The first elastic arm 2345 and the second elastic arm 2346 may have the same structure and shape. For example, the first elastic arm 2345 and the second elastic arm 2346 each include a first end 2341 and a second end 2342. The first elastic arm 2345 and the second elastic arm 2346 are spaced apart along the second direction, and the first elastic arm 2345 and the second elastic arm 2346 are both connected to the mounting plate 232. The first elastic arm 2345 and the second elastic arm 2346 can apply multiple elastic forces to the prism 22 in the second direction, so that the forces on the opposite sides of the second prism 225 distributed along the second direction are more evenly distributed.

[0073] Due to the tilted arrangement of the surface of the second prism 225 facing away from the first prism 224 relative to the mounting plate 232, the distance between the second prism 225 and the mounting plate 232 gradually decreases along the second direction. Compared to the first elastic arm 2345, the distance between the second elastic arm 2346 and the second prism 225 is smaller. The first and second elastic arms 2345, 2346, being of the same length, generate different elastic forces, resulting in uneven force on the second prism 225. Preferably, the second elastic arm 2346 can be shorter than the first elastic arm 2345, ensuring that both the first and second elastic arms 2345, 2346 provide the same elastic force. This configuration ensures uniform force on the second prism 225. This configuration also ensures that the first and second elastic arms 2345, 2346 apply equal force, preventing excessive force on a single elastic arm 2344 and rapid mechanical fatigue. Among them, the specific length settings of the first elastic arm 2345 and the second elastic arm 2346 can be selected and designed according to the change in the distance between the second prism 225 and the mounting plate 232, the relative positions of the first elastic arm 2345 and the second elastic arm 2346, etc., and this implementation does not limit it.

[0074] It is understood that in the second direction, the multiple elastic arms 234 may further include a third elastic arm, a fourth elastic arm, and even more. To ensure uniform force on the second prism 225, the lengths of the multiple elastic arms 234 sequentially arranged along the second direction may be configured to gradually decrease, so that the multiple elastic arms 234 provide the same elastic force. This configuration can ensure uniform force on the second prism 225.

[0075] In addition, the multiple elastic arms 234 can be symmetrically arranged along the second direction, so that the forces on the two opposite sides of the second prism 225 are more uniform.

[0076] In another embodiment, see Figure 11 The spring clip 23 also includes a bent portion 233, which is connected to the mounting plate 232 and can be fixed within the housing 21 via the mounting plate 232. The bent portion 233 is located on the side of the second prism 225 away from the first prism 224. The bent portion 233 can block at least a portion of the surface of the second prism 225 away from the first prism 224. When light propagates to the second prism 225, the bent portion 233 can partially block the light from entering the second prism 225, thereby limiting the field of view. While securing the prism 22, the spring clip 23 can also adjust the imaging range of the light, reducing the need for subsequent optical components such as the aperture, thereby improving the integration of the optical-mechanical assembly 20.

[0077] In some other embodiments, the shapes and specific structures of the multiple elastic arms 234 can be configured to be different to adapt to more complex prisms 22 and improve the stability of the prism 22 during use.

[0078] In the optical-mechanical assembly 20 provided in this embodiment, the prism 22 is carried on the carrying surface 216, and adhesive 24 is provided between the first fixing surface 214 and the first surface 221 and between the second fixing surface 215 and the second surface 222. The adhesive 24 can fix the prism 22 in the first direction and the second direction. The spring 23 can abut the surface of the prism 22 away from the bottom plate 213, and the adhesive 24 is provided between the carrying surface 216 and the prism 22. The spring 23 cooperates with the adhesive 24 provided between the carrying surface 216 and the prism 22 to fix the prism 22 in the third direction. Among them, the first direction, the second direction and the third direction

[0079] The spring 23 and adhesive 24 cooperate to secure the prism 22 in the first, second, and third directions. This completely secures the prism 22, preventing it from shifting, ensuring the prism's ability to regulate light and improving the reliability of the optical-mechanical assembly 20.

[0080] In the projector 1 using the optomechanical assembly 20 in the above embodiment, the prism 22 is fixed in the housing 21 of the optomechanical assembly 20 , and the reliability of the prism 22 is improved to ensure the imaging stability and safety of the projector 1 .

[0081] In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as a specific reference or special structure. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, unless there is a contradiction, those skilled in the art can combine and combine the different embodiments or examples described in the present invention and the features of the different embodiments or examples.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. An optical mechanical component, characterized in that: include: a housing, the housing comprising a first side panel, a second side panel, and a bottom panel, the first side panel and the second side panel being adjacent to each other, the bottom panel having a bearing surface, the first side panel having a first fixing surface facing the interior of the housing, the second side panel having a second fixing surface facing the interior of the housing, and the bottom panel having a light-transmitting hole extending therethrough; a prism, the prism being carried on the carrying surface and corresponding to the light-transmitting hole, the prism having a first surface and a second adjacent surface, the first surface being arranged opposite to the first fixing surface, the second surface being arranged opposite to the second fixing surface, and adhesive being arranged between the carrying surface and the prism, between the first fixing surface and the first surface, and between the second fixing surface and the second surface; as well as The spring piece is detachably connected to the housing and abuts against a surface of the prism away from the bottom plate.

2. The optical-mechanical assembly according to claim 1, wherein: When the elastic sheet is pressed against the prism, a first elastic force acting along a second direction and a second elastic force acting along a third direction are applied to the prism, wherein the second direction and the third direction intersect.

3. The optical-mechanical assembly according to claim 1, wherein: The shell also includes a third side panel, which is spaced apart from the first side panel along the first direction, and has a third fixing surface facing the interior of the shell. The prism also has a third surface opposite to the first surface, and the third surface is arranged opposite to the third fixing surface. Glue is provided between the third fixing surface and the third surface, and the first direction, the second direction and the third direction intersect.

4. The optical-mechanical assembly according to claim 3, wherein: A first adhesive is arranged between the prism and the supporting surface, a second adhesive is arranged between the first fixing surface and the first surface of the prism, between the second fixing surface and the second surface of the prism, and / or between the third fixing surface and the third surface of the prism, the hardness of the first adhesive is greater than the hardness of the second adhesive, and the first adhesive is used to support the prism in a third direction.

5. The optical-mechanical assembly according to claim 4, wherein: The prism includes a first prism and a second prism, the first surface is arranged on the first prism and the second prism, the third surface is arranged on the first prism and the second prism, the first prism has a first inclined surface, the second prism has a second inclined surface that cooperates with the first inclined surface, the first inclined surface and the second inclined surface are in contact with each other, the first prism is supported on the supporting surface, and the spring is pressed against the surface of the second prism away from the first prism.

6. The optical-mechanical assembly according to claim 5, wherein: The first adhesive is arranged between the first prism and the supporting surface, and the second adhesive is arranged between the first fixing surface and the first surface of the first prism, between the second fixing surface and the second surface of the first prism, and / or between the third fixing surface and the third surface of the first prism.

7. The optical-mechanical assembly according to claim 5 or 6, wherein a third adhesive is provided between the first fixing surface and the first surface of the second prism and / or between the third fixing surface and the third surface of the second prism, and the hardness of the third adhesive is less than the hardness of the second adhesive.

8. The optical-mechanical assembly according to claim 5, wherein: The spring piece includes a mounting piece and an elastic arm. The mounting piece is arranged on the first side plate and the second side plate. The mounting piece has a through hole, which corresponds to the light-transmitting hole. One end of the elastic arm is connected to the mounting piece, and the other end abuts against the surface of the second prism away from the first prism.

9. The optical-mechanical assembly according to claim 8, wherein: A surface of the second prism away from the first prism is tilted relative to the mounting plate.

10. The optical-mechanical assembly according to claim 8, wherein: The elastic sheet further includes a bending portion connected to the mounting sheet, and the bending portion shields at least a portion of a surface of the second prism away from the first prism.

11. A projector, characterized in that: include: The optical-mechanical assembly according to any one of claims 1 to 10.

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