CN111385549A

CN111385549A - Adjusting device of spatial light modulator and projection device thereof

Info

Publication number: CN111385549A
Application number: CN201910975494.8A
Authority: CN
Inventors: 周建华; 周正平; 杜鹏; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2018-12-28
Filing date: 2019-10-14
Publication date: 2020-07-07
Anticipated expiration: 2039-10-14
Also published as: CN111385549B; WO2021073533A1

Abstract

The application provides a projection device, it includes spatial light modulator's adjusting device, spatial light modulator's adjusting device includes the ray apparatus casing, sets up two at least spatial light modulator subassemblies and at least one regulating part on the ray apparatus casing, and wherein an at least spatial light modulator subassembly passes through the regulating part and connects on the ray apparatus casing, each spatial light modulator subassembly includes a spatial light modulator, the regulating part is arranged in carrying out position control to the spatial light modulator in its spatial light modulator subassembly of connecting. The application also provides an adjusting device of the spatial light modulator.

Description

Adjusting device of spatial light modulator and projection device thereof

Technical Field

The present disclosure relates to the field of optical and projection technologies, and more particularly, to an adjusting device of a spatial light modulator and a projection apparatus including the adjusting device of the spatial light modulator.

Background

In various systems such as home projection, engineering projection and cinema projection, a DMD is mainly used as a key output device for imaging. In the case of high luminance output, the single DMD device becomes unstable when the temperature limit is exceeded due to heat dissipation limitations, and thus the use of multiple DMDs in combination becomes a good choice.

The key of the matched use of the plurality of DMDs lies in the height coincidence of the projection pixels, which not only needs to precisely adjust the relative positions of two or more DMDs during installation, but also ensures that the pixel coincidence degree of the plurality of DMDs can still be adjusted after the complete machine is installed and fixed, so as to prevent the projection pixels of the plurality of DMDs from being staggered due to the factors of stress release of surrounding structural members of the DMDs, shrinkage of glue curing process and the like after the installation. Therefore, it is critical to ensure a stable and reliable fixing of the DMD after the DMD is adjusted in position. On one hand, the DMD assembly needs to be firmly fixed, and the position deviation caused by conventional stress and vibration is avoided; on the other hand, the fixing mode of the DMD assembly needs to be ensured to be capable of effectively resisting the dislocation of the DMD projection image caused by different thermal expansion degrees of structural components around the DMD under different temperature conditions. This is also a significant problem that is currently faced throughout the entire field of multi-DMD projection.

Disclosure of Invention

In view of this, the present application provides an adjusting device of a spatial light modulator and a projection apparatus including the adjusting device of the spatial light modulator, so that the spatial light modulator can be adjusted in position after being stably installed, and it is ensured that projected image pixels of a plurality of spatial light modulators coincide.

In order to achieve the purpose, the present application provides an adjusting device of a spatial light modulator, which includes an optical machine housing, at least two spatial light modulator assemblies disposed on the optical machine housing, and at least one adjusting member, wherein at least one spatial light modulator assembly is connected to the optical machine housing through the adjusting member, and the adjusting member is used for adjusting the position of the spatial light modulator in the spatial light modulator assembly connected thereto. The present application also provides a projection apparatus comprising the above-mentioned adjustment device of the spatial light modulator, which has all the functions and advantages of the above-mentioned adjustment device of the spatial light modulator.

This application is through collecting fixed function and regulatory function in the regulating part of an organic whole, has realized that spatial light modulator still can carry out pixel level fine setting to its position after the installation is fixed, guarantees the pixel coincidence of a plurality of spatial light modulator projection images, and can effectively reduce the displacement that the modulator chip produced by factors such as temperature, power, vibration after the installation, has improved the stability of modulator chip installation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic perspective exploded view of an adjusting apparatus of a spatial light modulator in an embodiment of the present application.

Fig. 2 is an assembled schematic view of fig. 1.

Fig. 3 is a perspective view of one of the viewing angles of the optical housing in fig. 1.

Fig. 4 is a perspective view of the optical housing of fig. 3 from another perspective.

Fig. 5 is a perspective view of the adjusting member of fig. 1 from one of its viewing angles.

Fig. 6 is a perspective view of the adjustment member of fig. 5 from another perspective.

Fig. 7 is a schematic view of the installation of the trim element and adjustment member of fig. 1.

FIG. 8 is a schematic view of the attachment of the trim component to the mounting plate.

Fig. 9 is a schematic diagram of the DMD assembly rotationally adjusted by the trimming component.

Fig. 10 is a schematic perspective view of one of the viewing angles of the DMD device in fig. 1.

Fig. 11 is a schematic perspective view of the DMD device in fig. 10 from another viewing angle.

Fig. 12 is a perspective view illustrating one of the viewing angles of the driving board of fig. 1.

Fig. 13 is a perspective view of the fixing plate of fig. 1.

Fig. 14 is a perspective view of the fixing plate of fig. 13 from another perspective.

Fig. 15 is a partially assembled schematic view of fig. 1.

Fig. 16 is a perspective view of the elastic insulating pad of fig. 1.

Fig. 17 is a perspective view of the heat sink in fig. 1.

Fig. 18 is a perspective view of the heat sink of fig. 17 from another perspective.

Fig. 19 is an assembly schematic of the DMD assembly of fig. 2.

Fig. 20 is a partial cross-sectional view of the structure of fig. 2.

Fig. 21 is a perspective view of the glass ring of fig. 1 and 20.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", "first", "second", "front", "back", and the like are used for convenience in describing the present application and simplifying the description, but are not intended to have an implied or indicated meaning, and thus, should not be construed as limiting the present application.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic perspective exploded view of an adjusting device of a spatial light modulator according to an embodiment of the present application; fig. 2 is an assembled schematic view of fig. 1. The application provides a spatial light modulator's adjusting device, including an optical machine casing 100, set up two at least spatial light modulator subassemblies 200 on optical machine casing 100 to and at least one regulating part 300, wherein at least one spatial light modulator subassembly 200 passes through regulating part 300 and connects on optical machine casing 100, and each spatial light modulator subassembly 200 includes a spatial light modulator 1, regulating part 300 is used for carrying out position control to modulator chip 1 among the spatial light modulator subassembly 200 that it connects.

It should be noted that, the DMD spatial light modulator is used for the related description and illustration of the adjusting device, but the adjusting device of the spatial light modulator is also applicable to the LCOS spatial light modulator.

For convenience of description, the DMD assembly 200 is hereinafter referred to as a spatial light modulator assembly 200, and the DMD device 1 is referred to as a spatial light modulator 1.

As shown in fig. 1 and fig. 2, in this embodiment, two DMD assemblies 200 are both fixedly mounted on the optical engine housing 100, and each DMD assembly 200 includes a DMD device 1, a driving board 2, a fixing board 3, a heat sink 4, and a plurality of connecting pieces 5 having limiting parts, which are connected to the optical engine housing 100 in a matching manner and then fixed to the optical engine housing 100. Specifically, one of the DMD assemblies 200 is connected to the optical-mechanical housing 100 through the adjuster 300; the other DMD assembly 200 is directly fixed to the optomechanical housing 100.

Referring to fig. 3 and 4 together, fig. 3 is a schematic perspective view of an optical housing in fig. 1; fig. 4 is a perspective view of the optical housing of fig. 3 from another perspective.

As shown in fig. 3 and fig. 4, in the present embodiment, the optical-mechanical housing 100 includes a substantially rectangular frame body, and the rectangular frame body includes four side walls 101, wherein two adjacent side walls 101 are respectively used for fixing one DMD assembly 200. A placing groove 102 is formed on the outer surface of one of the side walls 101 for directly fixing the DMD assembly 200, and the placing groove 102 is used for installing the DMD device 1 in the DMD assembly 200. Specifically, the placing groove 102 is generally rectangular, the placing groove 102 does not penetrate through the corresponding side wall 101, and an adaptive notch 103 is formed at a corner of the placing groove 102; a plurality of positioning columns 104 and a plurality of bosses 114 are arranged on one side wall 101 and protrude outwards from the bottom surface of the placing groove 102, and the positioning columns 104 and the bosses 114 are used for positioning when the DMD device 1 is installed; a regular rectangular light-transmitting hole 105 is further formed in the middle of one side wall 101, which is located at the bottom of the placement groove 102, the light-transmitting hole 105 penetrates through the corresponding side wall 101, and the positioning column 104 and the boss 114 are located around the light-transmitting hole 105; convex columns 106 used for fixing the corresponding driving plate 2 are respectively convexly arranged on the outer surface of one side wall 101 at the four peripheral corners of the placing groove 102, and a threaded hole is axially formed in the end part of each convex column 106; a light through hole 107 is formed on the outer surface of the other side wall 101 for fixing the DMD assembly 200, two opposite sides of the light through hole 107 of the other side wall 101 are respectively provided with a protruding lug 108 in a protruding manner, the outer surface of each protruding lug 108 is provided with a plurality of positioning columns 109, and the positioning columns 109 are used for installing and fixedly connecting the corresponding adjusting pieces 300 of the DMD assembly 200.

Preferably, in this embodiment, two positioning pillars 104 are provided, the two positioning pillars 104 are located at two opposite corners of the light hole 105, the three bosses 114 are provided, the three bosses 114 are symmetrically provided around the light hole 105 about a center line of the light hole 105, the DMD device 1 can be quickly and stably installed in the installation slot 102 and positioned in the horizontal direction by the two positioning pillars 104 on the bottom surface of the installation slot 102, and the DMD device 1 can be positioned in the vertical direction by the three bosses 114 on the bottom surface of the installation slot 102.

In other embodiments, the number of the positioning pillars 104 may be 3, 4 or other numbers; the number of the bosses 114 may be 4 or more to allow the DMD device 1 to be smoothly mounted, and the bosses 114 may not be symmetrically disposed with respect to the light transmission hole.

In other embodiments, the two side walls 101 of the optical-mechanical housing 100 for fixing the DMD assembly 200 may be configured with a positioning column 109, and the positioning column 109 on each side wall 101 is used for connecting an adjusting member 300.

In other embodiments, the adjusting device of the spatial light modulator may be applied to three DMD assemblies 200, wherein one DMD assembly 200 is respectively mounted on three side walls 101 of the four side walls 101 of the optical-mechanical housing 100, at least one DMD assembly 200 is provided with the adjusting member 300 between the side wall 101, and the adjusting members 300 may or may not be provided between the other two DMD assemblies 200 and the corresponding side walls 101. It is understood that, when the optical-mechanical housing 100 is installed with the three DMD assemblies 200, the specific structural configuration and the installation angle of the side wall 101 thereof should be consistent with the practical application.

It should be noted that the opto-mechanical housing 100 has other structural features, which are not described or illustrated since they are not relevant to the improvements of the present application.

Referring to fig. 5 to 7, fig. 5 is a schematic perspective view of an angle of view of the adjusting member in fig. 1; FIG. 6 is a perspective view of the adjustment member of FIG. 5 from another perspective; fig. 7 is a schematic view of the installation of the trim element and adjustment member of fig. 1. As shown in fig. 5 to 7, the adjusting member 300 has a front surface 301 and a back surface 303, the front surface 301 is used for mounting the DMD device 1, and the back surface 303 is connected to the optical-mechanical housing 100. Specifically, in this embodiment, the adjusting member 300 includes a positioning plate 310 having a substantially rectangular shape, a mounting plate 330, and an adjusting ring 350 connected between the positioning plate 310 and the mounting plate 330, and the DMD device 1 is mounted on the mounting plate 330, and the adjusting ring 350 is adjusted to displace the adjusting ring 350 and drive the mounting plate 330 to displace, thereby driving the DMD device 1 to perform position adjustment.

Preferably, in the present embodiment, the mounting plate 330 is disposed in the middle of the rectangular positioning plate 310.

In other embodiments, the positioning board 310 may have other shapes according to practical situations, such as an isosceles trapezoid, a diamond shape, etc.; the mounting plate 330 may also be disposed at other positions of the positioning plate 310, such as left or right, according to the requirement.

The mounting plate 330 is provided with a placement groove 332, the placement groove 332 is internally provided with an adaptive unfilled corner 331, a plurality of positioning columns 333 and a plurality of bosses 363, the DMD device 1 is mounted in the placement groove 332, and the adaptive unfilled corner 331, the positioning columns 333 and the bosses 363 are used for mounting, guiding and positioning the DMD device 1; the mounting plate 330 is provided with a regular rectangular light hole 335 on the bottom surface of the placement groove 332, and the light hole 335 penetrates through the mounting plate 330. The four corners of the front surface of the mounting plate 330 are further provided with convex columns 334 for fixedly mounting the corresponding drive plate 2, and a threaded hole is axially formed in the end of each convex column 334 and penetrates through the mounting plate 330. The positioning post 333 and the boss 363 respectively have the same functions as the positioning post 104 and the boss 114, and are not described herein again.

Four connecting pieces 312 are convexly arranged at four corners of the positioning plate 310 along the length direction of the positioning plate 310, and the connecting pieces 312 are used for installing the DMD assembly 200 connected to the adjusting piece 300 on the optical engine housing 100. Specifically, each connecting piece 312 is provided with a stepped through hole 314, and a large hole of each stepped through hole 314 is formed in the front surface 301.

The front middle portion of the positioning plate 310 is provided with a substantially rectangular accommodating space 315, the adjusting ring 350 and the mounting plate 330 are both accommodated in the accommodating space 315, and the adjusting ring 350 is located around the outer portion of the mounting plate 330, so that a first adjusting groove 352 is formed between the adjusting ring 350 and the positioning plate 310, and a second adjusting groove 354 is formed between the adjusting ring 350 and the mounting plate 330.

It can be understood that, in the present embodiment, the receiving space 315 is provided in a rectangular shape according to the shape of the rectangular positioning plate 310. In other embodiments, the receiving space 315 may be configured with other corresponding shapes according to the shape of the positioning plate 310, for example, the receiving space is configured with an isosceles trapezoid as the positioning plate 310.

Further, the gap between the first and

second adjustment grooves

352 and 354 is in the range of 0.5mm to 1 mm.

The first adjusting groove 352 extends along the circumferential surface of the inner wall of the accommodating space 315, at least one elastic first connecting portion 355 for connecting the positioning plate 310 and the adjusting ring 350 is disposed on the first adjusting groove 352, each first connecting portion 355 has an elastic U-shaped structure, one end of each first connecting portion 355 is connected to the positioning plate 310, and the other end is connected to the adjusting ring 350; the second adjusting groove 354 extends along the inner circumferential surface of the adjusting ring 350, at least one elastic second connecting portion 357 is disposed on the second adjusting groove 354 for connecting the mounting plate 330 and the adjusting ring 350, each second connecting portion 357 is also an elastic U-shaped structure, one end of the second connecting portion 357 is connected to the mounting plate 330, and the other end is connected to the adjusting ring 350.

Specifically, in the present embodiment, the first adjusting grooves 352 are respectively provided with first connecting portions 355 having a U-shaped structure at the middle positions of two opposite ends of the adjusting ring 350, one end of each first connecting portion 355 is connected to the inner wall of the accommodating space 315 of the positioning plate 310, and the other end is connected to the outer wall of the adjusting ring 350, so that the adjusting ring 350 and the positioning plate 310 are integrally connected; the second adjusting grooves 354 are respectively provided with second connecting portions 357 having a U-shaped structure at positions adjacent to four corners of two opposite sides (different from two sides where the first connecting portions 355 are located) of the adjusting ring 350, one end of each second connecting portion 357 is connected to the outer wall peripheral surface of the mounting plate 330, and the other end is connected to the inner wall peripheral surface of the adjusting ring 350, so that the mounting plate 330 and the adjusting ring 350 are integrally connected. Further, the positioning plate 310, the adjusting ring 350 and the mounting plate 330 are integrally connected by the first and second connecting

portions

355 and 357.

It should be noted that, in the present embodiment, the adjusting ring 350 has an inner wall peripheral surface and an outer wall peripheral surface, wherein the wall peripheral surface closer to the inner positioning groove 332 is defined as an inner wall peripheral surface of the adjusting ring 350, and the other wall peripheral surface is defined as an outer wall peripheral surface of the adjusting ring 350; the mounting plate 330 has only one wall periphery and is spaced and opposite to the inner wall periphery of the adjusting ring 350, which is defined as the outer wall periphery of the mounting plate 330, and a second adjusting groove 354 is spaced between the outer wall periphery of the mounting plate 330 and the inner wall periphery of the adjusting ring 350; similarly, the receiving space 315 has only one wall surface and is spaced apart from and opposite to the outer wall surface of the adjusting ring 350, and is defined as an inner wall surface of the receiving space 315, and a first adjusting groove 352 is spaced between the inner wall surface of the receiving space 315 and the outer wall surface of the adjusting ring 350.

In one embodiment, adjustment ring 355 is a rectangular ring body including 2X-direction sides and 2Y-direction sides, wherein the X-direction is perpendicular to the Y-direction. The first adjusting groove 352 is provided with a group (2) or two groups (4) of first connecting portions 355 having a U-shaped structure on the opposite X-direction side of the adjusting ring 350, and the second adjusting groove 354 is provided with a group (2) or two groups (4) of second connecting portions 357 having a U-shaped structure on the opposite Y-direction side of the adjusting ring 350. In fig. 6, the adjusting ring 350 has a set of first connecting portions 355 at the X-direction side edge, and two sets of second connecting portions 357 at the Y-direction side edge.

In other embodiments, the number of first connection portions 355 between the adjustment ring 350 and the positioning plate 310 and the number of second connection portions 357 between the adjustment ring 350 and the mounting plate 330 may be other numbers consistent with practice; the position of the first connecting portion 355 may also be set at any position between the adjusting ring 350 and the positioning plate 310, such as two diagonal positions, two adjacent sides, two opposite sides, etc., as required; the position of the second connection portion 357 may also be disposed at other positions between the adjusting ring 350 and the mounting plate 330, such as opposite sides and the center, etc., as required; the first connection portions 355 and/or the second connection portions 357 may also be uniformly or non-uniformly arranged.

In other embodiments, the first connecting portion 355 and the second connecting portion 357 may have other shapes, such as a V-shape, a rectangular shape with an opening, an S-shape, etc., and it is only necessary that one end of the first connecting portion 355 is connected to the adjusting ring 350 and the other end is connected to the positioning plate 310; one end of the second connecting portion 357 is connected to the adjusting ring 350, and the other end is connected to the mounting plate 330.

In other embodiments, the adjusting member 300 may be provided with only the first adjusting groove 352 and the corresponding first connecting portion 355, or more connecting grooves and corresponding connecting portions, as needed.

A long side and/or at least one short side of the positioning plate 310 close to the fitting notch 331 is further provided with a threaded hole for installing a fine adjustment element 400, and the fine adjustment element 400 is used for pushing against the mounting plate 330 or the adjusting ring 350. Specifically, in the present embodiment, a first threaded hole 316 is disposed at the middle position of the positioning plate 310 close to the long side of the fitting notch 331, a second threaded hole 318 is disposed at the middle position of both short sides of the positioning plate 310, a through hole 356 is disposed at the position of the adjusting ring 350 corresponding to the first threaded hole 316, and the first adjusting groove 352 and the second adjusting groove 354 are communicated with each other at the through hole 356, so that the fine tuning element 400 installed in the first threaded hole 316 can directly push against the mounting plate 330 through the through hole 356; accordingly, the fine tuning elements 400 mounted in the second threaded holes 318 on both short sides can push against the adjusting ring 350. The adjustment ring 350 has a raised platform 359 on the front face 301 at a location corresponding to the notch 356, the platform 359 being configured to ensure that the adjustment ring 350 remains integral with the notch 356.

Specifically, as shown in fig. 7, in the present embodiment, the fine adjustment element 400 is a screw, and since the adjustment ring 350 and the positioning plate 310 have a first adjustment groove 352 therebetween and the adjustment ring 350 and the positioning plate 310 are connected by two first connection portions 355, when the fine adjustment screw 400 in the second threaded hole 318 on either short side of the positioning plate 310 is screwed to push the adjustment ring 350, the two first connection portions 355 are elastically deformed, so that the adjustment ring 350 can move in a horizontal plane parallel to the positioning plate 310 in the first adjustment groove 352, and the position of the adjustment ring 350 relative to the positioning plate 310 is changed, i.e., the position of the adjustment ring 350 relative to the positioning plate 310 can be finely adjusted, thereby moving the mounting plate 330 connected with the adjustment ring 350 integrally; similarly, when the fine adjustment screw 400 in the first threaded hole 316 on the long side of the positioning plate 310 is screwed to directly push the mounting plate 330, the four second connecting portions 357 are also elastically deformed, and the adjusting ring 350 and the mounting plate 330 connected to each other are correspondingly displaced, so that the adjusting ring 350 can be displaced in the first adjusting groove 352 and the second adjusting groove 354 along a horizontal plane parallel to the positioning plate 310, and the mounting plate 330 is driven to be displaced in the second adjusting groove 354 along a horizontal plane parallel to the positioning plate 310, thereby changing the position of the mounting plate 330 relative to the positioning plate 310.

The fact that the fine adjustment screw 400 is screwed to change the position of the mounting plate 330 relative to the positioning plate 310 means that the degree of tightness of the fine adjustment screw 400 installed in the first threaded hole 316 and/or the second threaded hole 318 is adjusted to change the magnitude of the pushing force, thereby changing the amount of elastic deformation caused by the pushing force, and achieving the position adjustment of the mounting plate 330. Further, in this embodiment, the DMD device 1 is installed in the installation slot 332 of the installation plate 330, and the fine adjustment screw 400 is screwed to finely adjust the position of the installation plate 330, that is, the fine adjustment screw 400 is screwed to finely adjust the position of the installed DMD device 1.

Preferably, in this embodiment, the fine adjustment element 400, i.e. the fine adjustment screw, may further be sleeved with a spring, and the fine adjustment screw and the threaded hole are better engaged and positioned by the elastic force thereof, so that the adjusted mounting plate 330 may not be displaced without external force, and the stability of the DMD device 1 is ensured.

In other embodiments, the trimming member 400 may not be spring loaded; the fine adjustment element 400 may also be a screw.

In other embodiments, the adjusting ring 350 may not be provided with the through hole 356, and the fine tuning element 400 is directly used to push the adjusting ring 350 to change the position of the mounting plate 330, or the adjusting ring 350 is provided with a through hole at a position corresponding to the first threaded hole 316, so that the fine tuning element 400 installed in the first threaded hole 316 can also directly push the mounting plate 330.

In another embodiment, a first through hole is formed at the center of the long side (Y-direction side) of the positioning plate 310, a second through hole is formed at the position corresponding to the first through hole of the adjusting ring 350, a threaded hole is formed at the position corresponding to the second through hole of the mounting plate 330, the fine adjustment element 400 is screwed into the threaded hole of the mounting plate 330 through the first through hole and the second through hole, the second connecting portion 357 is elastically deformed by rotating the fine adjustment element 400, and the mounting plate 330 is moved in the X direction or the-X direction.

A third through hole is formed in the center of the short side (X-direction side) of the positioning plate 310 (the third through hole has the same function as the first through hole formed in the long side of the positioning plate 310, and is defined as a third through hole for distinction), the adjusting ring 350 is provided with a threaded hole at a position corresponding to the third through hole, the fine tuning element 400 is connected to the threaded hole in the adjusting ring 350 through the third through hole, the fine tuning element 400 is rotated, the first connecting portion 357 is elastically deformed, and the mounting plate 330 moves in the Y direction or the-Y direction.

In the above embodiment, as shown in fig. 8, the through hole of the positioning plate 310 is a countersunk hole having an inner step surface, the positioning plate 310 is provided with a first fastening portion on the periphery of the through hole, the first fastening portion is a pair of pressing pieces 410 screwed onto the positioning plate 310 by screws, and the pair of pressing pieces 410 are arranged axially symmetrically with respect to the through hole; the fine adjustment element 400 is provided with a second fastening portion, the second fastening portion is a convex ring 420 annularly arranged on the fine adjustment element 400, when the fine adjustment element 400 passes through the through hole and is in threaded connection with the corresponding threaded hole, the pair of pressing sheets 410 abuts against one side of the convex ring 420, and the opposite side of the convex ring 420 abuts against the inner step surface, so that the fine adjustment element 400 cannot move relative to the positioning plate 310 along the axial direction of the through hole, therefore, when the fine adjustment element 400 is screwed, the fine adjustment element 400 only rotates relative to the positioning plate 310 without relative movement, and further the engagement length between the fine adjustment element 400 and the corresponding threaded hole is changed to drive the mounting plate 330 to move.

In other embodiments, the positioning plate 310 and the fine adjustment element 400 may be relatively rotated without relative movement by other fastening means, for example, the second fastening portion is a ring groove formed in the fine adjustment element 400, and the pair of pressing sheets are fastened in the ring groove, so that the fine adjustment element 400 can only be rotated relative to the positioning plate 310 without relative movement in the axial direction of the through hole.

In the above embodiments, the fine adjustment element 400 may be a fine adjustment screw.

In another embodiment, as shown in fig. 9, two fine tuning elements 400 are installed on the long side (Y-side) of the positioning plate 310, and the two fine tuning elements 400 are rotated in opposite directions to adjust the DMD assembly 200, wherein the two fine tuning elements 400 are rotated in opposite directions to adjust the engagement length between the two fine tuning elements 400 and the corresponding threaded holes, so as to drive the mounting plate 330 to perform a relative rotation motion in the XY plane, and at this time, the second connection portion 357 is elastically deformed, so that the DMD assembly 200 performs a relative rotation motion in the XY plane. The embodiment shown in fig. 9 enables rotational adjustment of the DMD.

In the same principle, two fine adjustment elements 400 may be disposed on the short side (X-direction side) of the positioning plate 310, and the two fine adjustment elements 400 are rotated in different directions, so that the first connection portion 355 is elastically deformed, and the DMD assembly 200 performs a relative rotation motion in the XY plane.

Referring to fig. 10 and 11 together, fig. 10 is a schematic perspective view of a viewing angle of the DMD device in fig. 1; fig. 11 is a schematic perspective view of the DMD device in fig. 10 from another viewing angle. As shown in fig. 10 and 11, the DMD device 1 has a rectangular shape having a front surface 11 and a back surface 13, and an adapting notch 15 is formed at a corner of the DMD device 1. The front surface 11 of the DMD device 1 is provided with an installation positioning hole 12 and a micro-mirror light reflecting region 14; a heat dissipation area 16 is disposed at a position corresponding to the micromirror light reflection area 14 in the middle of the back surface of the DMD device 1, positioning posts 17 are respectively disposed at two opposite ends of the heat dissipation area 16 on the back surface of the DMD device 1, and a conductive contact array 18 is further disposed around the heat dissipation area 16 on the back surface of the DMD device 1.

In this embodiment, one of the DMD devices 1 can be quickly mounted in the mounting groove 102 of the optical-mechanical housing 100 by the positioning cooperation between the positioning hole 12 and the positioning column 104 and the guidance of the adaptive notch 15 and the adaptive notch 103; through the positioning fit between the positioning hole 12 and the positioning post 333 and the guidance of the fitting notch 15 and the fitting notch 331, another DMD device 1 can be quickly mounted in the mounting groove 332 of the adjusting member 300.

It can be understood that, in order to make the light of the light source in the projector irradiate the micromirror light reflecting area 14 of the DMD device 1 through the light-transmitting holes 105 in the placing groove 102 and the light-transmitting holes 335 in the placing groove 332, the shapes and the sizes of the light-transmitting holes 105 and the light-transmitting holes 335 are matched with the micromirror light reflecting area 14 of the DMD device 1.

Preferably, in this embodiment, the DMD device 1 performs three-point positioning in the vertical direction through three bosses provided on the bottom surfaces of the corresponding mounting grooves, and performs positioning in the horizontal direction through cooperation between positioning pillars and positioning holes, the positioning pillars and the positioning holes being cooperatively provided in two groups

In other embodiments, three groups or other numbers of positioning columns and positioning holes of the DMD device 1 and the corresponding placement grooves may be provided according to the situation; the bosses can be symmetrically arranged into four or more bosses according to the situation, and the positioning in the horizontal direction is carried out.

In other embodiments, the mounting and positioning structure between the DMD device 1 and the corresponding placement groove may also be a positioning pin and a positioning hole, and in the case of multiple sets of positioning, the positioning pin may also be used in cooperation with the positioning hole, or the positioning pin may be used in cooperation with the positioning hole.

Further preferably, in this embodiment, after the DMD device 1 is stably installed in the installation groove 102 of the optical mechanical housing 100 and the installation groove 332 of the adjusting member 300, a ring of natural curing glue may be further disposed between the DMD device 1 and the installation plate 330 for sealing and dust-proof the inside of the optical mechanical housing 100.

Referring to fig. 12, fig. 12 is a schematic perspective view of a viewing angle of the driving board in fig. 1. As shown in fig. 12, the driving plate 2 has a front surface 21 and a corresponding back surface 23, the front surface 21 of the driving plate 2 is provided with positioning holes 22 matching with the positioning posts 17 on the DMD device 1, and the positioning posts 17 can pass through the positioning holes 22 and further perform mounting and positioning with the fixing plate 3; the front surface 21 of the driving board 2 is further provided with a positioning hole 24 for mounting and matching with the fixing board 3, a screw through hole 26, a through hole 28 for passing a positioning column 109 on the optical-mechanical housing 100, and a through hole 29 corresponding to the heat dissipation area 16 of the DMD device 1.

Specifically, in the embodiment of the present application, after the DMD device 1 is stably installed in the installation slot 102 and/or the installation slot 332, the corresponding driving board 2 is pressed on the DMD device 1 through the positioning cooperation between the positioning posts 17 and the positioning holes 22, the front surface 21 of the driving board 2 contacts with the back surface 13 of the DMD device 1, and the DMD device 1 is in point-type electrical connection with the driving board 2 through the conductive contact array 18.

Referring to fig. 13 and 14, fig. 13 is a schematic perspective view of a fixing plate of fig. 1 from one viewing angle; fig. 14 is a perspective view of the fixing plate of fig. 13 from another perspective. As shown in fig. 13 and 14, the fixing plate 3 is i-shaped, the fixing plate 3 has a front surface 31 and a back surface 33, and the front surface 31 of the fixing plate 3 is provided with positioning posts 32 and positioning holes 34 for matching with the positioning posts 17 on the DMD device 1. The middle of the back 33 of the fixing plate 3 is further provided with a through hole 35, screw through holes 36 located at four corners, and convex columns 38 for fixedly mounting the heat sink 4, wherein a threaded hole is axially formed at an end of each convex column 38, and the threaded hole penetrates through the fixing plate 3.

Specifically, referring to fig. 15, fig. 15 is a partially assembled view of fig. 1. As shown in fig. 15, when assembling the DMD assembly 200 connected to the optical mechanical housing 100 through the adjuster 300, the DMD device 1 is first accommodated in the accommodating slot 332 of the adjuster 300, the driving board 2 is stacked on the front surface 301 of the adjuster 300, the fixing board 3 is stacked on the back surface 23 of the driving board 2 facing away from the adjuster 300, and the fixing board 3 is pressed on the driving board 2 through the cooperation between the positioning holes 24 on the driving board 2 and the positioning holes 34 and the positioning posts 17 on the DMD device 1; the front surface 31 of the fixing plate 3 is contacted with the back surface 23 of the driving plate 2, and then four sets of set screws 51 are sequentially passed through the screw through holes 36 on the fixing plate 3 and the screw through holes 26 on the driving plate 2 to be matched with the screw holes of the corresponding convex columns 334 on the adjusting piece 300, so that the driving plate 2 is fixed on the adjusting piece 300, and the DMD device 1 is clamped and positioned in the placing groove 332 of the adjusting piece 300, so as to ensure that the DMD device 1 is tightly contacted with the driving plate 2.

Similarly, when assembling the DMD assembly 200 directly connected to the optical engine housing 100, the DMD device 1 is first accommodated in the accommodating slot 102 of the optical engine housing 100, the driving board 2 is stacked on the DMD device 1, the fixing board 3 is stacked on the driving board 2, the four sets of set screws 51 sequentially pass through the screw through holes 36 on the fixing board 3 and the screw through holes 26 on the driving board 2 and then are matched with the threaded holes of the convex columns 106 on the optical engine housing 100, so that the driving board 2 is fixed on the optical engine housing 100, and the DMD device 1 is pressed in the accommodating slot 102 of the optical engine housing 100 by the driving board 2.

Referring to fig. 16, fig. 16 is a schematic perspective view of the elastic insulating pad of fig. 1 from one viewing angle.

Preferably, an elastic insulating pad 7 is further disposed between each driving plate 2 and the corresponding fixing plate 3, and the elastic insulating pad 7 may be one of a rubber pad or a silicone pad. The shape of the elastic insulating pad 7 is consistent with that of the fixing plate 3, and the elastic insulating pad 7 is mainly used for preventing the short circuit of the driving plate 2 and also can be used for preventing the fixing plate 3 from grinding the driving plate 2.

Correspondingly, as shown in fig. 16, a gourd through hole 71 for passing the positioning post 32 and the set screw 51 on the fixing plate 3 together, a through hole 72 for passing the set screw 51 alone, and a through hole 73 for passing the positioning post 17 on the DMD device 1 are disposed on the elastic insulating pad 7, and a penetrating hole 74 corresponding to the penetrating hole 35 of the fixing plate 3 is further disposed on the elastic insulating pad 7.

Preferably, as shown in fig. 1, in this embodiment, a gasket 8 may be further disposed between each set screw 51 and the corresponding fixing plate 3, and the gasket 8 may be a metal elastic sheet, a rubber elastic sheet, or a silicon elastic sheet.

Through the positioning of the multiple groups of positioning columns and the positioning holes and the fastening of the set screws 51, the accurate and stable installation of the fixing plate 3, the driving plate 2 and the DMD device 1 is ensured.

In other embodiments, the mating structure for mounting and positioning between the fixing plate 3, the driving plate 2, and the DMD device 1 may also be one of a positioning pin, a positioning hole, and an elastic buckle, or a combination structure of a positioning post, a positioning pin, and a positioning hole.

Similarly, in other embodiments, the fixing plate 3 and the elastic insulating pad 7 may be shaped into other shapes according to practical application, such as a rectangle, and only need to be provided with corresponding structural features such as positioning holes, through holes, and penetrating holes.

Referring to fig. 17 and 18, fig. 17 is a schematic perspective view of the heat sink in fig. 1; fig. 18 is a perspective view of the heat sink of fig. 17 from another perspective. As shown in fig. 17 and 18, each heat sink 4 includes a connecting block 41 and a heat sink 48 connected to the connecting block 41, a heat conducting block 43 protrudes from a surface 42 of the connecting block 41 facing the fixing plate 3, and the heat conducting block 43 is used for conducting heat on the DMD device 1 to the heat sink 48 so as to dissipate heat of the DMD device 1. Specifically, in this embodiment, the heat-conducting block 43 sequentially passes through the through hole 35 on the fixing plate 3, the through hole 74 on the elastic insulating pad 7 and the through hole 29 on the driving plate 2, and then is adjacent to the heat dissipation area 16 on the back surface 13 of the DMD device 1, so as to dissipate heat of the DMD device 1. The connecting plate is characterized in that a gourd hole 45 is further formed in one face 42, facing the fixing plate 3, of the connecting block 41, a plurality of connecting holes 47 with step faces 46 are formed in one face 44, facing away from the fixing plate 3, of the connecting block 41, one portion of the gourd hole 45 is communicated with the connecting holes 47, and the other portion of the gourd hole is in a shape of a sunken groove. The middle of one surface 44 of the connecting block 41, which faces away from the fixing plate 3, is provided with two connecting grooves 442 along the length direction of the connecting block 41. The heat radiator 48 includes two heat pipes 482 and a plurality of heat dissipation fins 484, one end of the two heat pipes 482 is connected to the two connection grooves 442 of the connection block 41, and the plurality of heat dissipation fins 484 are connected to the other end of the two heat pipes 482 in a stacked manner. The heat generated by the DMD device 1 is conducted to the heat dissipating fins 484 via the heat conducting block 43, the connecting block 41 and the heat conducting pipe 482, and the heat dissipating fins 484 can accelerate the dissipation of the heat generated by the DMD device 1.

It should be noted that the through hole 35, the through hole 74 and the through hole 29 through which the heat conduction block 43 sequentially passes are all disposed at positions corresponding to the heat dissipation area 16, wherein the through hole 74 and the through hole 35 are respectively disposed at the center positions of the elastic insulation pad 7 and the fixing plate 3.

It is understood that in other embodiments, when the fixing plate 3 and the elastic insulating pad 7 have other shapes, the through

holes

35 and 74 may be disposed at other corresponding positions other than the central position.

Preferably, in the present embodiment, a layer of heat conductive silicone grease is filled between the heat conducting block 43 and the heat dissipation area 16 of the DMD device 1 to improve the heat dissipation efficiency.

In other embodiments, other heat conducting materials such as a heat conducting gasket may be filled between the heat conducting block 43 and the heat dissipation area 16 of the DMD device 1.

Referring to fig. 19 and 20 together, fig. 19 is an assembled view of the DMD assembly of fig. 2; fig. 20 is a partial cross-sectional view of the structure of fig. 2. As shown in fig. 19 and 20, in the present embodiment, four sets of fastening screws 52 sleeved with springs 9 respectively pass through the connecting holes 47 of the connecting blocks 41 and then are engaged with the corresponding threaded holes of the studs 38 of the fixing plate 3 to fix the heat sink 4 on the fixing plate 3. One end of each spring 9 is abutted against the nut of the set screw 52, and the other end is abutted against the step surface 46 on the connecting hole 47. The part of the connecting block 41, which is not communicated with the gourd hole 45 and the connecting hole 47, of the sinking groove corresponds to the position of the set screw 51, and a certain gap is reserved between the sinking groove and the nut of the set screw 51.

It should be noted that the spring 9, the gasket 8, the elastic insulating pad 7 and other elastic members are all in a certain compression state after stable assembly, so as to ensure that the components are tightly attached, and simultaneously, the elastic deformation of the spring counteracts the force generated by unstable factors such as external force and vibration, thereby further ensuring the accuracy and stability of the assembly of the DMD assembly 200.

Further, the elastic deformation of the elastic member may also disperse and cancel the force generated when fastening set screw 51 and/or set screw 52, thereby avoiding direct application of the force to DMD device 1 to protect DMD device 1.

It can be understood that, in the present embodiment, the connecting element 5 having the limiting portion is specifically a set screw 51 and a set screw 52, the set screw 51, the set screw 52 and a boss with a threaded hole matching with the screw are all correspondingly disposed and reasonably distributed on the corresponding components, and the number of the set screws 51 and/or the set screws 52 may also be other numbers than four groups, and specifically may be set according to the actual application.

In other embodiments, the connecting member 5 with the position-limiting portion may also be other fastening structures besides a set screw, including but not limited to an elastic hook.

Referring to fig. 2 and fig. 20, in the present embodiment, the DMD device 1, the driving board 2, the fixing board 3, the heat sink 4 and the connecting member 5 having a limiting portion in each DMD assembly 200 are connected to each other in the above-mentioned matching manner; one of the DMD assemblies 200 is directly fixed on the carriage body 100 through the cooperation of the set screw 51 and the threaded hole of the corresponding convex pillar 106, and the other DMD assembly 200 is carried on the adjusting member 300 through the cooperation of the set screw 51 and the threaded hole of the corresponding convex pillar 334.

Further, as shown in fig. 20, in this embodiment of the application, the adjusting device of the spatial light modulator further includes a plurality of glass rings 500, the glass rings 500 are sleeved on the positioning columns 109 corresponding to the optical engine housing 100 and are abutted against the stepped surfaces in the stepped through holes 314 of the positioning plate 310, and the glass rings 500 are used for fixing the adjusting piece 300 connected with the DMD component 200 on the optical engine housing 100.

Referring to fig. 5 and 21, fig. 21 is a schematic perspective view of the glass ring of fig. 1 and 20. Specifically, as shown in fig. 5, the stepped through hole 314 includes a first hole and a second hole communicated with the first hole, the diameter of the first hole is greater than or equal to the outer diameter of the glass ring 500, the diameter of the second hole is greater than or equal to the diameter of the positioning column 109 and smaller than the outer diameter of the glass ring 500, and the inner diameter of the glass ring 500 is greater than or equal to the diameter of the positioning column 109. When the glass ring 500 is mounted and matched, the lower surface 501 of the glass ring 500 is abutted against the stepped surface in the stepped through hole 314, and a certain gap exists between the glass ring 500 and the positioning column 109 as well as between the glass ring and the adjusting piece 300.

Further, in the embodiment of the present application, a light curing adhesive is applied to a gap between the glass ring 500 and the positioning column 109 of the optical mechanical housing 100 and a gap between the glass ring 500 and the stepped through hole 314 of the adjusting member 300, and a light beam with a specific wavelength is used for irradiation and curing, so that the adjusting member 300 connected with the DMD assembly 200 is fixed on the optical mechanical housing 100.

Preferably, in this embodiment, the photo-curing adhesive is an adhesive with a small shrinkage rate and a small thermal expansion coefficient in a curing process, and specifically may be an ion polymerization type epoxy resin UV glue, and the light beam with a specific wavelength is one of ultraviolet light and visible light.

As shown in fig. 21, the glass ring 500 has a lower surface 501 in contact with the stepped surface of the stepped through hole 314, an inner side surface 502 cylindrically opposed to the positioning column 109, and an upper surface 503 and an outer side surface 504 opposed to the lower surface 501 and the inner side surface 502, respectively. The inner side 502 includes two inner chamfer surfaces and an inner cylindrical surface (not shown), and the outer side 504 includes two outer chamfer surfaces and an outer cylindrical surface (not shown).

Preferably, in this embodiment, the lower surface 501 and the inner side surface 502 of the glass ring 500 are rough surfaces so as to make the UV glue applied between the glass ring 500 and the positioning column 109 and the adjusting member 300 have better adhesive strength, and the upper surface 503 and the outer side surface 504 of the glass ring 500 are polished surfaces so as to make the light beam with the specific wavelength sufficiently irradiate the glue application position.

In other embodiments, the lower surface 501 and the inner surface 502 of the glass ring 500 may be roughened by treatments including but not limited to scoring, sandblasting, etc. to improve the bonding strength of the UV glue.

It should be noted that, in this embodiment, the adjusting member 300 and the positioning column 109 are made of materials with thermal expansion coefficients similar to those of the glass ring, so that the rhythm of thermal expansion of the structural member adjusting member 300, the glass ring 500 and the positioning column 109 around the DMD device 1 is substantially consistent, and it is ensured that the pixels of the projected images of the plurality of DMD devices 1 coincide.

Preferably, both the adjusting member 300 and the positioning post 109 can be made of kovar alloy.

In summary, in the embodiment of the present application, the complete assembly manner of the adjusting apparatus of the spatial light modulator is specifically as follows:

firstly, one DMD device 1 is installed in the installation groove 102 of the optical-mechanical housing 100 through the matching of the positioning hole 12 on the front surface 11 and the positioning column 104 on the optical-mechanical housing 100, the other DMD device 1 is installed in the installation groove 332 of the adjusting member 300 through the matching of the positioning hole 12 and the positioning column 333 on the adjusting member 300, and after the DMD device 1 is stably installed, a circle of natural curing adhesive for sealing and dust prevention is arranged around the DMD device 1.

Then, the driving plate 2 is pressed on the corresponding DMD device 1 through the matching between the positioning hole 22 on the driving plate 2 and the positioning post 17 on the back surface 13 of the DMD device 1, and the DMD device 1 is electrically connected with the driving plate 2 in a dot mode.

In order to prevent the driving board 2 from being worn or short-circuited, the elastic insulating pad 7 is preferably attached to the back 23 of the driving board 2 away from the DMD device 1 through the cooperation between the through hole 73 and the positioning post 17 on the DMD device 1. Then, the fixing plate 3 is pressed and covered on the driving plate 2 attached with the elastic insulating pad 7 through the matching between the positioning column 32 and the positioning hole 24 on the driving plate 2 and the positioning matching between the positioning hole 34 and the positioning column 17 on the DMD device 1, the front surface 31 of the fixing plate 3 is opposite to the back surface 23 of the driving plate 2, and further, four sets of fastening screws 51 sleeved with the gasket 8 are sequentially passed through the screw through holes 36 on the fixing plate 3 and the screw through holes 26 on the driving plate 2 to be matched with the corresponding threaded holes of the convex columns 334 on the adjusting element 300, so that the driving plate 2 is fixed on the adjusting element 300, and the DMD device 1 is clamped and positioned in 332 of the adjusting element 300; similarly, four sets of the set screws 51 sequentially pass through the screw through holes 36 on the fixing plate 3 and the screw through holes 26 on the driving plate 2 and then are matched with the threaded holes of the convex columns 106 on the optical-mechanical housing 100, so that a driving plate 2 is fixed on the optical-mechanical housing 100, and the DMD device 1 is pressed in the installation groove 102 of the optical-mechanical housing 100 by the driving plate 2.

Then, the heat conducting block 43 on the heat sink 4 sequentially passes through the fixing plate 3, the elastic insulating pad 7 and the penetrating hole on the driving plate 2 to be close to the heat dissipation area 16 on the back of the DMD device 1, and then four sets of fastening screws 52 sleeved with springs 9 pass through the connecting holes 47 on the connecting block 41 of the heat sink 4, and the fastening screws 52 are matched with the threaded holes of the convex columns 38 on the fixing plate 3, so that the heat sink 4 is fixed on the fixing plate 3.

Through the above steps, one DMD assembly 200 is completely fixed on the optical mechanical housing 100, and the other DMD assembly 200 is carried on the adjusting member 300.

Finally, the adjusting piece 300 bearing the DMD assembly 200 is connected to the opto-mechanical housing 100 through the cooperation between the stepped through hole 314 on the adjusting piece 300 and the positioning column 109 on the opto-mechanical housing 100, after the adjusting jig is used to determine that the projected images of the two DMD devices 1 are completely overlapped, the four glass rings 500 are correspondingly sleeved on each positioning column 109 of the opto-mechanical housing 100 to press the adjusting piece 300 tightly and abut against the stepped surface in the stepped through hole 314 of the adjusting piece 300, UV glue is coated on the gaps among the glass rings 500, the positioning columns 109 and the adjusting piece 300, and the UV glue is irradiated by ultraviolet light to be cured, so that the adjusting piece 300 bearing the DMD device 100 is also fixed on the opto-mechanical housing 100.

As described above, the two DMD assemblies 200 in the embodiment of the present application are both fixed to the optical mechanical housing 100, so that the stable assembly of each component in the adjusting device of the whole spatial light modulator is realized.

Further, in the use process of the adjusting device of the spatial light modulator, the fine tuning element 400 installed in the second threaded hole 318 of the adjusting member 300 may be screwed to push against the adjusting ring 350 on the adjusting member 300, so as to deform the adjusting ring and further to drive the position of the mounting plate 330 relative to the positioning plate 310 to change, or the fine tuning element 400 installed in the first threaded hole 316 of the adjusting member 300 may be screwed to directly push against the mounting plate 330, so as to change the position thereof, thereby implementing the fine tuning of the DMD device 1 installed in the mounting plate 330 at the pixel level, and ensuring the accurate superposition of the projected images of the plurality of DMD assemblies 200, i.e. the adjusting device of the spatial light modulator may also be used for subsequent correction and adjustment.

It is understood that, in the above embodiments, the complete assembly manner of the adjusting device of the spatial light modulator is described by taking the dual DMD assembly 200 as an example, and in other embodiments, the adjusting device and the installation manner of the spatial light modulator may also be applied to more than two DMD assemblies 200, which are not described herein again.

Likewise, the adjusting device of the spatial light modulator can also be applied to an LCOS spatial light modulator comprising a plurality of LCOS chips.

In addition, the adjusting device of the spatial light modulator in the embodiment of the present application can also be applied to a projection device, so that the projection device to which the adjusting device of the spatial light modulator is applied also has all the functions and advantages of the adjusting device of the spatial light modulator.

The foregoing is a preferred embodiment of the present application and it should be noted that modifications and embellishments could be made by those skilled in the art without departing from the principle of the present application and these are considered to be within the scope of the present application.

Claims

1. The adjusting device of the spatial light modulator is characterized by comprising an optical machine shell, at least two spatial light modulator assemblies arranged on the optical machine shell and at least one adjusting piece, wherein at least one spatial light modulator assembly is connected to the optical machine shell through the adjusting piece, each spatial light modulator assembly comprises a spatial light modulator, and the adjusting piece is used for adjusting the position of the spatial light modulator in the spatial light modulator assembly connected with the spatial light modulator.

2. The adjusting apparatus of the spatial light modulator according to claim 1, wherein the adjusting member comprises a positioning plate, a mounting plate, and an adjusting ring connected between the positioning plate and the mounting plate, the spatial light modulator is mounted on the mounting plate, and the adjusting ring is adjusted to displace the adjusting ring to drive the mounting plate to displace, so as to drive the spatial light modulator to perform position adjustment.

3. The adjusting apparatus of claim 2, wherein the positioning plate has a receiving space, the adjusting ring is disposed around the mounting plate, and the mounting plate and the adjusting ring are received in the receiving space.

4. The adjusting apparatus of a spatial light modulator according to claim 3, wherein a first adjusting groove is formed between the adjusting ring and the positioning plate, and the adjusting ring moves in position in the first adjusting groove along a horizontal plane parallel to the positioning plate to move the mounting plate.

5. The adjusting apparatus of a spatial light modulator according to claim 4, wherein the first adjusting groove is provided with at least one first connecting portion for connecting the positioning plate and the adjusting ring, at least one of the first connecting portions has elasticity, and the adjusting ring is moved in the first adjusting groove by elastic deformation of the first connecting portion.

6. The adjusting apparatus of claim 5, wherein a second adjusting groove is formed between the adjusting ring and the mounting plate, and the adjusting ring can move in position in the first adjusting groove and the second adjusting groove to move the mounting plate.

7. The adjusting apparatus of a spatial light modulator according to claim 6, wherein the second adjusting groove is provided with at least one second connecting portion for connecting the mounting plate and the adjusting ring, at least one of the second connecting portions has elasticity, and the adjusting ring is moved in the second adjusting groove by elastic deformation of the second connecting portion.

8. The adjusting apparatus of a spatial light modulator according to claim 7, wherein one end of the first connecting portion is connected to the adjusting ring, and the other end of the first connecting portion is connected to the positioning plate; one end of the second connecting portion is connected to the adjusting ring, and the other end of the second connecting portion is connected to the mounting plate.

9. The adjusting apparatus of a spatial light modulator according to claim 8, wherein the first connecting portion and the second connecting portion have a U-shaped structure, a V-shaped structure, a rectangular structure with an opening, or an S-shaped structure.

10. An adjusting apparatus of a spatial light modulator according to claim 2, wherein a long side and/or at least one short side of the positioning plate is provided with a threaded hole for installing a fine adjustment element, and the fine adjustment element installed in the threaded hole is screwed to push the adjusting ring, so that the adjusting ring moves to move the mounting plate.

11. The apparatus of claim 10, wherein the adjusting ring has a through hole corresponding to at least one of the threaded holes, and the fine tuning element inserted into the at least one threaded hole passes through the through hole and pushes against the mounting plate.

12. The adjusting apparatus of a spatial light modulator according to claim 2, wherein a long side and/or at least one short side of the positioning plate is provided with a first through hole for allowing a fine tuning element to pass through, the positioning plate is provided with a first engaging portion around the first through hole, and the adjusting ring is provided with a first threaded hole at a position corresponding to the first through hole; the fine adjustment element is provided with a second clamping part, the fine adjustment element penetrates through the first through hole and is in threaded connection with the first threaded hole, and the first clamping part and the second clamping part are correspondingly clamped to prevent the fine adjustment element from moving relative to the positioning plate along the axial direction of the first through hole; the fine adjustment element is screwed to drive the adjusting ring to move, so that the mounting plate is driven to move.

13. The apparatus of claim 12, wherein the adjusting ring has a second through hole at a position corresponding to the first through hole, the mounting plate has a second threaded hole at a position corresponding to the second through hole, and the fine tuning element screwed into the second threaded hole through the first through hole and the second through hole drives the mounting plate to move.

14. The apparatus of claim 2, wherein the mounting plate has a mounting groove, and the spatial light modulator is received in the mounting groove.

15. The adjusting apparatus of the spatial light modulator according to claim 2, further comprising a plurality of glass rings, wherein the glass rings are sleeved on the corresponding positioning posts of the optical-mechanical housing and abut against the stepped surfaces in the stepped through holes of the positioning plate, and the glass rings are used for fixing the adjusting member connected with the spatial light modulator assembly on the optical-mechanical housing.

16. The adjusting apparatus of claim 15, wherein a light curing adhesive is applied to a gap between the glass ring and the positioning post and a gap between the glass ring and the stepped through hole, and is irradiated and cured by a light beam with a specific wavelength.

17. The modulation device according to claim 16, wherein the lower surface and the inner side surface of the glass ring are rough surfaces, and the upper surface and the outer side surface of the glass ring are polished surfaces.

18. A projection apparatus comprising the spatial light modulator adjusting apparatus according to any one of claims 1 to 17.