CN212694240U

CN212694240U - Reflector adjusting device, projection optical machine and projector

Info

Publication number: CN212694240U
Application number: CN202021743455.XU
Authority: CN
Inventors: 杨浩; 王源; 孙峰; 朱青
Original assignee: Shenzhen Anhua Optoelectronics Technology Co Ltd
Current assignee: Shenzhen Anhua Photoelectric Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-12
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a reflector adjusting device, a projection ray apparatus and a projector, wherein, the reflector adjusting device comprises a fixed seat, a support piece, a connecting piece and a plurality of adjusting pieces, wherein, the fixed seat is provided with a first connecting hole and a plurality of adjusting holes positioned at the periphery of the first connecting hole; the support piece is opposite to the fixed seat in the extending direction of the first connecting hole or the adjusting hole, and the support piece is provided with a second connecting hole; one surface of the support piece, which is far away from the fixed seat, is used for fixing and bearing the reflecting mirror; the connecting piece is arranged in the first connecting hole and the second connecting hole in a penetrating way so as to fixedly connect the fixed seat and the supporting piece and enable the fixed seat and the supporting piece to be preliminarily positioned; the adjusting pieces are arranged in the adjusting holes in a one-to-one correspondence mode, and the adjusting pieces can movably act on the supporting pieces along the extending direction of the adjusting holes so that the supporting pieces can swing relative to the fixed base. The utility model discloses a speculum adjusting device realizes support piece basic fixed and location through the connecting piece, has reduced the regulation degree of difficulty.

Description

Reflector adjusting device, projection optical machine and projector

Technical Field

The utility model relates to an optics projection equipment technical field especially relates to a speculum adjusting device, projection ray apparatus and projecting apparatus.

Background

Generally, a projector is used to connect an imaging device, such as a computer or a mobile phone, and project an image output from the imaging device onto an imaging screen in an enlarged manner.

Miniature projectors have become popular in recent years due to their small size and high cost performance. The core component of the micro projector is a projector light machine. The working principle of the projection light machine is as follows: the optical illumination system emits light subjected to light splitting, light homogenizing and the like to an image modulation element, such as a digital micromirror or a liquid crystal panel, and then the light is amplified and projected through a projection lens. Here, in consideration of portability, it is often necessary to provide a mirror inside the optical illumination system to change the direction of the optical path. In practical application, because the precision of the projector system is high, the influence links on the projection quality are multiple, wherein the installation precision of the reflector belongs to one of the key links, and the projector also comprises a reflector adjusting device for adjusting the reflector due to the correct realization of the function of the reflector and the compensation of errors of other links.

In the conventional mirror adjusting apparatus, the mirror is fixed on a flat plate support, and a plurality of screws are connected to the flat plate support, and the screws are used for fixing the support to the housing of the projection optical machine and adjusting the relative position between the support and the housing. Although the adjustment range of each screw is relatively large, on the premise that the screwing depth of one screw is too deep or too shallow, the rest screws are adjusted, and the conditions are easy to occur:

1) the remaining screws cannot adjust the mirror to the correct position anyway;

2) the rest of the screws are adjusted to adjust the reflector to the correct position, but the reflector cannot be firmly supported;

3) the mirror can neither be adjusted to the correct position nor supported firmly.

In conclusion, the prior reflector adjusting device has the technical problem of difficulty in adjustment.

SUMMERY OF THE UTILITY MODEL

Based on above-mentioned current situation, the utility model discloses a main aim at provides a change speculum adjusting device, projection ray apparatus and projecting apparatus of adjusting speculum relative position.

In order to achieve the above object, the utility model adopts the following technical scheme:

a reflector adjusting device comprises a fixed seat, a supporting piece, a connecting piece and a plurality of adjusting pieces, wherein,

the fixed seat is provided with a first connecting hole and a plurality of adjusting holes positioned on the periphery of the first connecting hole; the extending direction of the first connecting hole and the extending direction of the adjusting hole are arranged in parallel;

the support piece and the fixed seat are oppositely arranged in the extending direction of the first connecting hole or the adjusting hole, and the support piece is provided with a second connecting hole corresponding to the first connecting hole; one surface of the support piece, which is far away from the fixed seat, is used for fixing and bearing the reflector;

the connecting piece penetrates through the first connecting hole and the second connecting hole to fixedly connect the fixed seat and the support piece and enable the fixed seat and the support piece to be preliminarily positioned;

the adjusting pieces are arranged in the adjusting holes in a one-to-one correspondence mode, and the adjusting pieces can movably act on the supporting pieces along the extending direction of the adjusting holes so that the supporting pieces can swing relative to the fixing base.

Preferably, the adjusting hole is an internal threaded hole, and the adjusting piece is in threaded fit with the adjusting hole.

Preferably, the fixing base orientation support piece's one side is equipped with the side position boss, adjust the hole and run through the side position boss is close to support piece's top surface.

Preferably, a middle boss is arranged on one surface of the fixed seat facing the supporting piece, and the first connecting hole penetrates through the middle boss and is close to the top surface of the supporting piece; the top surface of the middle boss is closer to the supporting piece than the top surface of the side boss.

Preferably, the middle boss is long, and the length direction of the middle boss is perpendicular to the extending direction of the first connecting hole or the adjusting hole;

the number of the adjusting holes is four, and two adjusting holes are arranged on each side of the middle boss; the lateral bosses which are arranged corresponding to the adjusting holes are respectively positioned at two sides of the middle boss; the two side position bosses which are positioned on the same side of the middle boss are arranged along the length direction of the middle boss and are connected into a whole.

Preferably, the fixing base deviates from one side of support piece is equipped with a plurality of first protruding muscle, and is a plurality of first protruding muscle surrounds one by one the regulation hole setting.

Preferably, the position of the adjusting hole is symmetrical with respect to the position center of the first connection hole.

Preferably, one end of the adjusting piece close to the support piece abuts against the support piece.

Preferably, the supporting member is plate-shaped, a surface of the supporting member facing the fixing seat is a plane, and the plurality of adjusting members abut against the surface of the supporting member facing the fixing seat.

Preferably, the support piece is plate-shaped, one surface of the support piece facing the reflector is a plane and is attached to the reflector, and a glue dispensing groove is formed in one surface of the support piece attached to the reflector.

Preferably, a middle boss is arranged on one surface of the fixed seat facing the supporting piece, and the first connecting hole penetrates through the middle boss and is close to the top surface of the supporting piece;

the connecting piece is a bolt, and the head of the connecting piece is positioned on one side of the fixed seat, which is far away from the supporting piece; the first connecting hole is a unthreaded hole, the second connecting hole is an internal threaded hole, and the top surface of the middle boss and the reflector are parallel to and perpendicular to the spiral axis of the connecting piece.

Preferably, the length of the connecting piece extending into the second connecting hole is greater than half of the depth of the second connecting hole and less than the depth of the second connecting hole.

Preferably, the second connecting hole is a threaded hole penetrating through the support member, and the connecting member is in threaded fit with the second connecting hole.

Preferably, the fixing base deviates from one side of the supporting piece is provided with a second convex rib, and the second convex rib surrounds the first connecting hole.

The utility model also provides a projection ray apparatus, including casing, optical lighting system, speculum, image modulation component and projecting lens, the projection ray apparatus still includes as above speculum adjusting device, the speculum install with on speculum adjusting device's the support piece.

The optical lighting system comprises a light source, a collimating lens, a dichroic mirror, a fly-eye lens and a converging lens group;

the projection optical machine also comprises a beam splitting prism group and a vibrating mirror;

the projection lens is used for magnifying and projecting the image modulated by the image modulation element onto a screen.

Preferably, the fixing seat is integrally provided with the housing.

The utility model also provides a projector, include as above the projection ray apparatus.

The reflector adjusting device of the utility model is additionally provided with a connecting piece outside the adjusting pieces, and the connecting piece plays a role in fixedly connecting the supporting piece and the fixing seat, and preliminary positioning can be satisfied between the supporting piece and the fixing seat under the action of the connecting piece; on this basis, fewer adjusting elements are required to adjust the mirror to the correct position with a smaller adjustment range. Thus, the difficulty of adjusting the position of the reflector is greatly reduced.

Other advantages of the present invention will be described in the detailed description, and those skilled in the art can understand the technical advantages brought by the technical features and technical solutions through the descriptions of the technical features and the technical solutions.

Drawings

Preferred embodiments of a mirror adjusting device, a projection optical machine, and a projector according to the present invention will be described below with reference to the accompanying drawings. In the figure:

fig. 1 is a schematic perspective view of a preferred embodiment of a projection optical machine according to the present invention;

FIG. 2 is a schematic side view of the optical projection engine of FIG. 1 along a vertical direction of a reflector;

FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2;

FIG. 4 is a perspective view of a portion of the structure of FIG. 1 at A;

FIG. 5 is an exploded view of the structure of FIG. 4;

FIG. 6 is a schematic view of an alternate angle of the structure of FIG. 4;

FIG. 7 is an exploded view of the structure of FIG. 6;

FIG. 8 is a schematic front view of the structure of FIG. 4;

fig. 9 is a schematic sectional view taken along line IX-IX in fig. 8.

Detailed Description

In order to better explain the utility model discloses reflector adjusting device's technical scheme and beneficial effect introduce the utility model discloses a before reflector adjusting device's detailed structure, introduce earlier the utility model discloses a preferred embodiment's projection ray apparatus.

Referring to fig. 1 to fig. 3, in an embodiment, the projection optical machine of the present invention includes a housing 10, an optical illumination system 20, a reflector 30, an image modulation element 40, a projection lens 50, and a reflector adjustment device 60, wherein the reflector 30 is mounted on a support 62 of the reflector adjustment device 60. Wherein,

the optical illumination system 20 is used to generate parallel three-color light, and its specific configuration has various modifications according to the prior art. In the present embodiment, specifically, the optical illumination system 20 includes a light source (21a, 21b, 21c), a collimator lens (22a, 22b, 22c), a dichroic mirror (23a, 23b, 23c), a fly-eye lens 24, a converging lens group (251, 252); wherein the light source is in particular an LED light source (21a, 21b, 21 c). In an alternative embodiment of the optical illumination system 20, the light source may be an RGB laser, a mixed light laser, or a bulb-type light source. According to different light sources, a dichroic mirror, a color wheel, a fluorescent wheel, an X prism and the like can be matched and selected. Furthermore, the light equalizer can be matched with a compound eye type and a light guide tube type selectively.

The light emitted from the light sources (21a, 21b, 21c) of the optical illumination system 20 is internally adjusted to output parallel light, and the reflecting mirror 30 is used for changing the propagation direction of the parallel light. In this embodiment, the parallel light transmitted through the fly-eye lens 24 is irradiated onto the reflecting mirror 30, and is further projected onto the free-form surface lens 252 of the converging lens group (251, 252) with changing direction.

The image modulation element 40 is used for controlling the on-off of the light beam according to the received image signal, thereby realizing image display. The conventional image modulation device 40 includes a DMD digital micromirror and a liquid crystal panel, and in this embodiment, the DMD digital micromirror is preferably used. In order to realize a more compact structure with the DMD digital micromirror, the projection light engine further includes a beam splitting prism set 70, specifically, a TIR prism.

The projection lens 50 is used to enlarge and project the image modulated by the image modulation element 40 onto a screen. In order to improve the resolution by using the XPR technology, the optical projection engine of the embodiment further includes a vibrating mirror 80 disposed between the beam splitting prism set 70 and the projection lens 50.

As can be seen from the above description, if the reflector 30 is removed, the optical illumination system 20, the converging lens group, the beam splitting prism group 70 and the projection lens 50 are all arranged in a straight line, so that the projection light engine becomes too slim. Meanwhile, the optical elements of the optical illumination system 20 are all mounted on the housing 10, and manufacturing errors of the housing 10, assembly errors of the optical illumination system 20, and errors in calculation of the optical path may generate a requirement for adjusting the position of the mirror 30, that is, a part of the total error of the system is compensated by adjusting the position of the mirror 30.

A preferred embodiment of the mirror adjusting apparatus of the present invention will now be described.

Referring to fig. 4 to 9, in an embodiment, the reflector adjusting apparatus 60 of the present invention includes a fixing base 61, a supporting member 62, a connecting member 63, and a plurality of adjusting members 64, wherein,

the fixing base 61 is provided with a first connecting hole 611 and a plurality of adjusting holes 612 located at the periphery of the first connecting hole 611; the extending direction of the first connection hole 611 is arranged in parallel with the extending direction of the adjusting hole 612;

the supporting element 62 and the fixing base 61 are oppositely arranged in the extending direction of the first connecting hole 611 or the adjusting hole 612, and the supporting element 62 is provided with a second connecting hole 621 corresponding to the first connecting hole 611; one surface of the supporting piece 62, which faces away from the fixed seat 61, is used for fixing and bearing the reflecting mirror 30;

the connecting member 63 is inserted into the first connecting hole 611 and the second connecting hole 621 to fixedly connect the fixing base 61 and the supporting member 62, and to initially position the fixing base 61 and the supporting member 62;

the adjusting pieces 64 are correspondingly arranged in the adjusting holes 612, and the adjusting pieces 64 can movably act on the supporting piece 62 along the extending direction of the adjusting holes 612 to enable the supporting piece 62 to swing relative to the fixed base 61.

In this embodiment, the fixing base 61 is not limited in structural form, and may be a simple plate or a frame structure. Since the mirror 30 cannot generally be directly fixed, a support 62 is required to carry, for example, the mirror 30 is bonded to the support 62. In order to enlarge the bonding area and reduce the volume, the support 62 is generally provided in a plate shape, so that the reflecting mirror 30 and the support 62 can be assembled to each other in a stacked manner. The connecting member 63 mainly has a fixed connection function and can be deformed in various ways, for example, one end of the connecting member 63 can be in limit fit along the length direction of the connecting member, and the other end of the connecting member is in threaded connection; one end is riveted, and the other end is in limit fit or threaded connection; the clamping connection mode can be combined on the basis of limit matching, riveting and threaded connection, and the like. The way of adjusting the supporting member 62 by the adjusting member 64 may be a way of pushing the supporting member 62 away from the fixed seat 61, a way of pulling the fixed seat 61 toward the fixed seat 61, or a way of combining the pushing and pulling. The structure of the adjusting member 64 is corresponding to the adjusting manner, for example, if the adjusting member is only pushed away, one end of the adjusting member 64 abuts against the surface of the supporting member 62 facing the fixing base 61; if the pushing away and pulling away are combined, one end of the adjusting member 64 may be embedded in the supporting member 62; the form of the adjusting hole 612 may also correspond to the moving manner of the adjusting member 64, for example, if the adjusting member 64 moves only along a straight line, the adjusting hole 612 may be a fixing hole or a fastening hole; if a screw drive is desired, the adjustment hole 612 may be a threaded hole that threadably engages the adjustment member 64. The arrangement of the extending direction of the first connecting hole 611 in parallel with the extending direction of the adjusting hole 612 includes that the extending direction of the first connecting hole 611 is parallel with the extending direction of the adjusting hole 612 or a small angle is formed between the extending direction of the first connecting hole 611 and the extending direction of the adjusting hole 612.

The reflector adjusting device 60 of the present invention is additionally provided with a connecting member 63 outside the adjusting members 64, and the connecting member 63 plays a role of fixedly connecting the supporting member 62 and the fixing seat 61, and the preliminary positioning between the supporting member 62 and the fixing seat 61 can be satisfied under the effect of the connecting member 63; on this basis, fewer adjusting elements 64 are required to adjust the mirror 30 to the correct position with a smaller adjustment range. In this way, the difficulty of adjusting the position of the mirror 30 is greatly reduced.

Further, the adjustment aperture 612 is an internally threaded aperture, and the adjustment member 64 is threadably engaged with the adjustment aperture 612. In this embodiment, the mode that adopts screw-thread fit can the fine control adjust the stroke to the position after guaranteeing to adjust keeps stable.

Further, one surface of the fixing seat 61 facing the support 62 is provided with a side position boss 613, and the adjusting hole 612 penetrates through the side position boss 613 to be close to the top surface of the support 62.

In this embodiment, the side bosses 613 are provided to increase the strength of the fixing base 61, so as to prevent the fixing base 61 from deforming at a position adjacent to the adjusting hole 612 under the action of assembly stress, thereby enhancing the position stability after adjustment, i.e., ensuring the reliability of position adjustment.

Furthermore, a middle boss 614 is disposed on one surface of the fixing seat 61 facing the supporting member 62, and the first connecting hole 611 penetrates through the middle boss 614 and is close to the top surface of the supporting member 62; the top surface of the center projection 614 is closer to the support 62 than the top surface of the side projections 613.

In this embodiment, the top surface of the middle boss 614 can play a role of positioning the supporting member 62, and can help to quickly complete the initial positioning between the fixing seat 61 and the supporting member 62. In the process of adjusting the position of the supporter 62, the top surface of the middle boss 614 may abut against the supporter 62, the abutment of the top surface of the middle boss 614 against the supporter 62 includes surface contact, line contact, and point contact, and the specific contact position between the top surface of the middle boss 614 and the supporter 62 may vary. The top surface of the middle boss 614 and the top surface of the side boss 613 form a fall in the extending direction of the first connecting hole 611 or the adjusting hole 612, and the positioning surface of the middle boss 614 is higher than the top surface of the side boss 613, so that a space for avoiding the fall can be formed, and the purpose of adjusting the position of the reflector 30 by using the extrusion deformation of the material between the components in the process of adjusting the support 62 is avoided.

Further, the middle boss 614 is long, and the length direction of the middle boss 614 is perpendicular to the extending direction of the first connecting hole 611 or the adjusting hole 612; the number of the adjusting holes 612 is four, and two adjusting holes are arranged on each side of the middle boss 614; the side position bosses 613 arranged corresponding to the adjusting holes 612 are respectively positioned at two sides of the middle position boss 614; the two side bosses 613 located on the same side of the middle boss 614 are arranged along the length direction of the middle boss 614 and are integrally connected.

In this embodiment, the middle boss 614 is arranged in a long strip shape, so as to increase the strength of the first connection hole 611. Secondly, the side position boss 613 that is located the same side of well position boss 614 links into an organic whole and sets up, so, except further increasing the intensity of fixing base 61, has still simplified fixing base 61 the shape, has increased the manufacturability of fixing base 61, for example when adopting injection moulding process shaping fixing base 61, can follow the length direction behind the side position boss 613 links into an organic whole and carry out the drawing die. Specifically, for convenience of injection molding, the longitudinal direction of the middle boss 614 is parallel to the longitudinal direction of the side boss 613.

Further, a plurality of first ribs 615 are disposed on a surface of the fixing base 61 facing away from the supporting member 62, and the first ribs 615 surround the adjusting holes 612 one by one.

In this embodiment, the lateral boss 613 increases the strength of the adjusting hole 612 in the fixing seat 61 towards the one side of the support 62, and by setting the first protruding rib 615, the strength of the adjusting hole 612 can be increased in the one side of the fixing seat 61 departing from the support 62, that is, the strength of the adjusting hole 612 is enhanced on both sides of the fixing seat 61, so that the reliability of the position adjustment of the reflecting mirror 30 is increased. It is understood that the first ribs 615 corresponding to adjacent adjusting holes 612 may be connected into a whole, that is, a section of rib may be shared between two adjacent first ribs 615; in addition, because first protruding muscle 615 is higher than the one side that the fixing base 61 deviates from support piece 62, so, first protruding muscle 615 can also play the effect of protection regulating part 64, especially under the condition that regulating part 64 adopted the metalwork, first protruding muscle 615 can reduce steam and regulating part 64 and take effect, and then avoid regulating part 64 to take place to corrode.

Further, the position of the adjustment hole 612 is centrally symmetrical with respect to the position of the first connection hole 611. In this embodiment, each adjusting hole 612 is symmetrical with respect to the center of the first connecting hole 611, so that the swing arms of different adjusting pieces 64 to the first connecting hole 611 are the same or can be mutually referred to, thereby facilitating calculation of the adjusting stroke of each adjusting piece 64.

Further, an end of the adjuster 64 near the support 62 abuts the support 62. In this embodiment, the position of the reflector 30 is adjusted by pushing the abutting support 62 away, which is relatively simple but still achieves the adjustment effect. In particular, after the preliminary positioning of the support 62, the adjusting element 64 can be inserted into the adjusting opening 612 from the side of the fixing base 61 facing away from the support 62 and pushed further into abutment with the support 62.

Further, the stay 62 is plate-shaped, one surface of the stay 62 facing the holder 61 is a flat surface, and the plurality of adjusting pieces 64 abut against one surface of the stay 62 facing the holder 61.

In this embodiment, as shown above, the supporting member 62 is configured in a plate shape, which is beneficial to increase the bearing surface for bearing the reflector 30 and facilitate the abutting of the adjusting member 64 against the surface of the supporting member 62 facing away from the reflector 30.

Further, in order to better position and bond the reflector 30, the supporting member 62 is plate-shaped, one surface of the supporting member 62 facing the reflector 30 is a plane and is attached to the reflector 30, and a glue dispensing groove is formed in one surface of the supporting member 62 attached to the reflector 30. In this embodiment, the supporting surface of the supporting member 62 is provided with a dispensing slot, and then the reflector 30 is only dispensed in the dispensing slot to be fixed, so that the reflector 30 can be positioned by using the supporting surface and the reflector 30 can be firmly fixed by glue.

Furthermore, a middle boss 614 is arranged on one surface of the fixing seat 61 facing the support 62, and the first connecting hole 611 penetrates through the middle boss 614; the connecting piece 63 is a bolt, and the head of the connecting piece 63 is positioned on one side of the fixed seat 61, which is far away from the supporting piece 62; the first connecting hole 611 is an unthreaded hole, the second connecting hole 621 is an internal threaded hole, and the top surface of the boss 614 and the reflector 30 are perpendicular to the spiral axis of the connecting member 63.

In the present embodiment, it can be understood that, in the process of fixing the supporting member 62 by screwing the connecting member 63, when the supporting member 62 approaches the initial positioning, the supporting member 62 may rotate along with the connecting member 63, and at this time, because the screw axis of the connecting member 63 is perpendicular to the reflecting mirror 30, even if the supporting member 62 rotates around the screw of the connecting member 63, the angle between the reflecting mirror 30 and the parallel light is not changed, so that the influence on the propagation of the light path is avoided; also, since the screw axis of the coupling member 63 is also perpendicular to the top surface of the middle boss 614, the reflecting mirror 30 does not change the distance on the screw axis of the coupling member 63 by the rotation of the supporting member 62.

Further, it can be understood that the deeper the connecting member 63 extends into the second connecting hole 621, the higher the fixing strength of the supporting member 62 is, but the less the supporting member 62 is able to swing relative to the fixing base 61; on the contrary, the shallower the length of the connecting member 63 extending into the second connecting hole 621, the lower the fixing strength, and the more easily the supporting member 62 swings relative to the fixing base 61. Therefore, in order to achieve better balance between the initial positioning, fixing the supporting member 62 and facilitating the swinging of the supporting member 62 relative to the fixing base 61, the length of the connecting member 63 extending into the second connecting hole 621 is greater than half of the depth of the second connecting hole 621 and less than the depth of the second connecting hole 621.

Further, the second connection hole 621 is a threaded hole penetrating through the support member 62, and the connection member 63 is in threaded fit with the second connection hole 621; a middle boss 614 is disposed on a surface of the fixing base 61 facing the supporting member 62, and the first connecting hole 611 penetrates through the middle boss 614.

In this embodiment, the second connecting hole 621 penetrates the supporting member 62, so that the thickness of the supporting member 62 can be fully utilized to provide more space for the insertion of the connecting member 63, or more flexible space for fastening the connecting member 63 can be provided. The strength of the first connection hole 611 can be increased by providing the middle boss 614, and the top surface of the middle boss 614 can be used for limiting the supporting member 62, so as to achieve the primary positioning between the fixing seat 61 and the supporting member 62.

Further, one surface of the fixing base 61 facing away from the supporting member 62 is provided with a second rib 616, and the second ribs 616 surround the first connecting holes 611 one by one. In this embodiment, the second ribs 616 are combined with the middle boss 614, so that the strength of the first connection hole 611 can be increased on both sides of the fixing base 61.

The utility model also provides a projection ray apparatus to and including the projecting apparatus of this projection ray apparatus, this projection ray apparatus includes casing 10, optical lighting system 20, speculum 30, image modulation component 40, projection lens 50 and speculum adjusting device 60. The mirror 30 is mounted on a support 62 of the mirror adjustment device 60. The specific structure of the reflector adjusting device 60 refers to the above embodiments, and since the projection optical machine and the projector adopt all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not described in detail herein.

Further, the fixing base 61 is provided integrally with the housing 10. Therefore, the number of parts of the projection light machine is correspondingly reduced, and the corresponding structure is more compact. In other embodiments, the fixing base 61 may be provided separately from the housing 10, which may correspondingly increase the flexibility of manufacturing the housing 10.

It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.

It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.

Claims

1. A reflector adjustment device, comprising a fixed base (61), a support member (62), a connecting member (63), and a plurality of adjustment members (64), wherein,

the fixed seat (61) is provided with a first connecting hole (611) and a plurality of adjusting holes (612) positioned at the periphery of the first connecting hole (611); the extending direction of the first connection hole (611) is arranged in parallel with the extending direction of the adjusting hole (612);

the supporting piece (62) and the fixed seat (61) are oppositely arranged in the extending direction of the first connecting hole (611) or the adjusting hole (612), and the supporting piece (62) is provided with a second connecting hole (621) corresponding to the first connecting hole (611); one surface of the supporting piece (62) departing from the fixed seat (61) is used for fixing and bearing the reflecting mirror (30);

the connecting piece (63) penetrates through the first connecting hole (611) and the second connecting hole (621) to fixedly connect the fixed seat (61) and the support piece (62), and the fixed seat (61) and the support piece (62) are preliminarily positioned;

the adjusting pieces (64) are arranged in the adjusting holes (612) in a one-to-one correspondence mode, and the adjusting pieces (64) can movably act on the supporting piece (62) along the extending direction of the adjusting holes (612) to enable the supporting piece (62) to swing relative to the fixed base (61).

2. A mirror adjustment device according to claim 1, wherein the adjustment hole (612) is an internally threaded hole, and the adjustment member (64) is threadedly engaged with the adjustment hole (612).

3. A mirror adjusting apparatus according to claim 2, wherein a side of the fixing base (61) facing the supporting member (62) is provided with a side projection (613), and the adjusting hole (612) penetrates the side projection (613) to be adjacent to the top surface of the supporting member (62).

4. A mirror adjusting apparatus according to claim 3, wherein a center boss (614) is provided on a surface of the fixing base (61) facing the supporting member (62), and the first connecting hole (611) penetrates through the center boss (614) to be close to a top surface of the supporting member (62); the top surface of the center projection (614) is closer to the support (62) than the top surface of the side projection (613).

5. The mirror adjustment device according to claim 4,

the middle boss (614) is long, and the length direction of the middle boss (614) is perpendicular to the extending direction of the first connecting hole (611) or the adjusting hole (612);

the number of the adjusting holes (612) is four, and two adjusting holes are arranged on each side of the middle boss (614); side position bosses (613) arranged corresponding to the adjusting holes (612) are respectively positioned at two sides of the middle position boss (614); the two side position bosses (613) positioned on the same side of the middle position boss (614) are arranged along the length direction of the middle position boss (614) and are connected into a whole.

6. A mirror adjustment device according to any one of claims 2-5, characterized in that a side of the holder (61) facing away from the support (62) is provided with a plurality of first ribs (615), which first ribs (615) are arranged one after the other around the adjustment aperture (612).

7. A mirror adjustment device according to claim 1, characterized in that the position of the adjustment hole (612) is centrally symmetrical with respect to the position of the first connection hole (611).

8. A mirror adjustment device according to any one of claims 1-5, characterized in that an end of the adjustment member (64) near the support member (62) abuts against the support member (62).

9. A mirror adjustment device according to claim 8, characterized in that the support (62) is plate-shaped, that a face of the support (62) facing the holder (61) is plane, and that the plurality of adjustment members (64) abut against a face of the support (62) facing the holder (61).

10. A mirror adjustment device according to claim 8, characterized in that the support element (62) is plate-shaped, that a side of the support element (62) facing the mirror (30) is plane and is attached to the mirror (30), and that a side of the support element (62) attached to the mirror (30) is provided with glue grooves.

11. A mirror adjusting apparatus according to claim 1, wherein a center boss (614) is provided on a surface of the fixing base (61) facing the supporting member (62), and the first connecting hole (611) penetrates through the center boss (614);

the connecting piece (63) is a bolt, and the head of the connecting piece (63) is positioned on one side of the fixed seat (61) departing from the supporting piece (62); the first connecting hole (611) is a unthreaded hole, the second connecting hole (621) is an internal threaded hole, and the top surface of the middle boss (614) and the reflector are both perpendicular to the spiral axis of the connecting piece (63).

12. A mirror adjusting apparatus according to any one of claims 1 to 4 and 11, wherein the length of the connecting member (63) extending into the second connecting hole (621) is greater than half the depth of the second connecting hole (621) and less than the depth of the second connecting hole (621).

13. A mirror adjusting apparatus according to claim 12, wherein the second coupling hole (621) is a screw hole penetrating the supporting member (62), and the coupling member (63) is screw-engaged with the second coupling hole (621).

14. A mirror adjustment device according to claim 13, characterized in that a side of the holder (61) facing away from the support (62) is provided with a second rib (616), the second rib (616) being arranged around the first connection hole (611).

15. Projection light engine comprising a housing (10), an optical illumination system (20), a mirror (30), an image modulation element (40) and a projection lens (50), characterized in that the projection light engine further comprises a mirror adjustment device (60) according to any of claims 1 to 14, the mirror (30) being mounted on a support (62) of the mirror adjustment device (60).

16. The optical projection engine of claim 15, characterized in that the holder (61) is integral with the housing (10).

17. A projector comprising the light engine of claim 15 or 16.