WO2018090842A1

WO2018090842A1 - Lens fine adjustment apparatus, lens adjustment module, and projection device

Info

Publication number: WO2018090842A1
Application number: PCT/CN2017/109312
Authority: WO
Inventors: 于广军; 黄思尧; 李屹
Original assignee: 深圳市光峰光电技术有限公司
Priority date: 2016-11-15
Filing date: 2017-11-03
Publication date: 2018-05-24
Also published as: CN108073019A; CN108073019B

Abstract

A lens fine adjustment apparatus (1000), a lens adjustment module (2000), and a projection device. The lens fine adjustment apparatus (1000) comprises a first support (600) and a second support (110) which are adjustably and movably connected, and the lens fine adjustment apparatus (1000) also comprises a plurality of position adjustment mechanisms (700) used for adjusting the relative positions of the first support (600) and the second support (110), and various position adjustment mechanism connection assemblies and adjustment assemblies. The connection assemblies movably connect the first support (600) and the second support (110), and the adjustment assemblies apply forces causing one of the first support (600) and the second support (110) to move with respect to the other. The present invention provides ample freedom of adjustment for lens position adjustment, and has a high adjustment accuracy and a rapid adjustment means.

Description

Lens fine adjustment device, lens adjustment module and projection device

[0001] The present invention relates to the field of optical technology, and more particularly to a lens fine adjustment device, a lens adjustment module, and a projection device.

Background technique

[0002] In a conventional projection device, the lens is often fixed, and the user can only adjust the projected image position by adjusting the relative position or angle of the projection device to the screen. Therefore, in order to project a suitable image on the screen, the user has to spend considerable time and effort to position the projection device to adjust the projection to the appropriate position or angle in the screen. In addition, when the lens is not in the optimal position to receive the light beam from the light source, since the lens is fixed, the position of the lens received beam cannot be improved by adjusting the position of the lens, thereby causing the image clarity of the lens projected onto the screen to be affected. Negative Effects. technical problem

[0003] In order to solve the above problems, there is a projection apparatus configured as a projection lens that adjusts a position of a lens by using a lens adjustment structure including a horizontal slider and a vertical slider, horizontal The movement of the slider and the vertical slider is realized by a manual mechanical driving mechanism. The horizontal slider and the vertical slider can only adjust the position of the lens in the horizontal and vertical directions respectively, and the degree of freedom of adjustment is higher. In particular, it is not possible to perform position adjustment of the lens in a direction perpendicular to the above horizontal or vertical direction; the mechanical drive mechanism takes up a large space, is noisy, and is subject to its minimum stroke limit, and the adjustment precision is not high enough, and Relatively slight adjustments are not possible, resulting in poor lens position adjustment accuracy, and the adjustment method is not quick and easy.

[0004] Therefore, in view of the deficiencies of the prior art, it is urgent to propose a lens fine adjustment device capable of relatively slightly adjusting the position of the lens, and a lens adjustment module and projection with high adjustment precision, quick adjustment mode, compact structure, and low noise. Technical solution for the equipment.

Problem solution

Technical solution

In view of the above, the present invention provides a lens fine adjustment device and a lens adjustment module having a lens fine adjustment device and The projection device solves the technical problem that the adjustment degree of the existing lens adjustment structure is less, the adjustment precision is low, and the adjustment mode is not fast.

[0006] In order to achieve the above object, the present invention provides the following technical solution: A lens fine adjustment device includes a first bracket and a second bracket, the first bracket and the second bracket are adjustable movable connections, the first bracket or the first bracket The second bracket is used for relatively fixed connection with the lens, and in the transmission direction of the light beam received by the lens, the second bracket is closer to the lens of the lens than the first bracket, and the first bracket and the second bracket respectively have The first communication hole and the second communication hole through which the light beam or the lens passes. The lens trimming device further includes a plurality of position adjustment mechanisms for adjusting the relative positions of the first bracket and the second bracket, wherein the connecting assembly movably connects the first bracket and the second bracket, the adjusting assembly applies the first bracket and The force of one of the second brackets relative to the other.

[0007] Further, the connection assembly includes a threaded connection member, an elastic member, a first connection hole penetrating through one of the first bracket and the second bracket, and being disposed on the other of the first bracket and the second bracket a third connecting hole, the adjusting assembly includes a thread adjusting member, a second connecting hole penetrating the first connecting hole and the second connecting hole, and the first connecting bracket and the third connecting hole An abutting portion of the two brackets, the first connecting hole and the third connecting hole are disposed in pairs, the second connecting hole and the abutting portion are oppositely disposed, and the first connecting hole includes a through hole, a threaded hole is disposed in the third connecting hole, the threaded rod of the threaded connecting member is provided with an external thread for connecting with the threaded hole, and the threaded rod passes through the through hole, wherein the elastic a member disposed between the connector of the threaded connector and the first bracket or the second bracket or disposed between the first bracket and the second bracket, the elastic member being elastically deformed Applying to the first bracket The second bracket is adjacent to or applies a pre-tightening force to the second bracket, the second connecting hole is a threaded hole, and the thread adjusting member is screwed to the second connecting hole. And the free end of the thread adjusting member abuts the abutting portion, the thread adjusting member and the elastic member cooperate to adjust the relative spacing of the first bracket and the second bracket.

[0008]

[0009] Further, an elastic member is sleeved on an outer circumference of the threaded rod of the threaded connecting member between the connecting head of the threaded connecting member and the first bracket or the second bracket, and the abutting portion is disposed on the first bracket or the first a fourth connecting hole on the two brackets, the fourth connecting hole and the second connecting hole are arranged in pairs, and the fourth connecting hole is provided with abutting The block, the free end pair of the thread adjusting member abuts against the abutting block.

[0010] Still further, the first connecting hole is a stepped hole including a through hole, a counterbore facing away from the first bracket or the second bracket, and a stepped surface between the through hole and the counterbore, located at the threaded connection An elastic member is sleeved on the outer circumference of the threaded rod between the step surface and the joint of the threaded connector.

[0011] Further, the second bracket is a hollow substantially rectangular body plate member, and each position adjusting mechanism is disposed at a position where the substantially rectangular body plate member is adjacent to the four apex angles and the first bracket corresponds to the four apex angles. .

Further, the first bracket further includes a receiving cavity formed to extend away from the second bracket, and the lens is partially received in the receiving cavity, and the shelf is provided with a light transmitting portion for the light beam to enter the lens.

[0013] Further, the lens fine adjustment device further includes a lens holder, the lens is at least partially fixedly mounted in the lens holder, and the lens holder includes a second bracket.

[0014] In order to achieve the above other object, the present invention provides a lens adjustment module, the lens adjustment module includes a first adjustment mechanism, a second adjustment mechanism, and the above-mentioned lens fine adjustment device, a first bracket, a second bracket, The first adjustment mechanism and the second adjustment mechanism are sequentially stacked and connected. The lens adjustment module further includes a first electric drive mechanism and a second electric drive mechanism, wherein the first electric drive mechanism is drivingly coupled to the first adjustment mechanism and drives the first adjustment mechanism to cause the second adjustment mechanism to indirectly drive the lens to move in the first direction The second electric drive mechanism is coupled to the second adjustment mechanism and drives the second adjustment mechanism to cause the second adjustment mechanism to directly drive the lens to move in a second direction perpendicular to the first direction. The first adjustment mechanism includes a first slider, and the second adjustment mechanism includes a second slider for fixedly connecting with the lens, and the first slider and the second slider respectively include a third communication hole and a fourth communication hole, the first communication The hole, the second communication hole, the third communication hole, and the fourth communication hole are substantially concentric and are provided for the lens to pass.

[0015] Further, the first adjusting mechanism includes a pair of first sliding bars fixed on the second bracket and inserted in the first sliding block and disposed in parallel in the second direction, and the second adjusting mechanism is fixed on the first sliding block And a pair of second sliding rods disposed in the second direction and inserted in parallel with the second slider. The first slider and the second slider are respectively moved under the guide of the first slider and the second slider, and the first slider is provided with a pair of first sleeves respectively sleeved on the outer circumference of the first slider Providing a pair of second sliding sleeves respectively sleeved on the outer circumference of the second sliding rod, the first electric driving mechanism comprises a first motor and a first screw connected by the transmission, and the second electric driving mechanism comprises a transmission connection The second motor and the second screw, the first screw and the second screw are respectively screwed to the second bracket and the second slider. [0016] In order to achieve the above another object, the present invention provides a projection device, the projection device includes a lens, a light machine, and the lens adjustment module, the lens is fixedly connected to the second slider, and the first bracket and the second bracket respectively The bracket is connected to the optical machine, and the first bracket is disposed away from the second bracket and is provided with a light transmitting portion for transmitting a light beam generated by the optical machine and incident on the lens.

Advantageous effects of the invention

Beneficial effect

[0017] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0018] In one aspect, the present invention adjusts the relative positions of the first bracket and the second bracket by the lens trimming device, so that the position of the lens that is fixedly connected to the first bracket or the second bracket can be adjusted, and By operating a plurality of position adjustment mechanisms, ample adjustment freedom can be obtained. In addition, the adjustment assembly is used to adjust the relative positions of the first bracket and the second bracket, which not only has high adjustment precision, but also has a quick adjustment manner.

[0019] In another aspect, the lens adjustment module adopts a pedestal mechanism, a first adjustment mechanism, and a second adjustment mechanism, which are arranged in a stacked manner, so that the lens adjustment module has a compact structure and a small occupied space, and The driving of the first adjusting mechanism and the second adjusting mechanism by the first electric driving mechanism and the second electric driving mechanism respectively realize that the first adjusting mechanism drives the second lens adjusting mechanism during the moving process, thereby indirectly passing the second lens adjusting mechanism To adjust the position of the lens in the first direction, and directly adjust the position of the lens in the second direction perpendicular to the first direction by the second lens adjustment mechanism, thereby ensuring high precision and stability of the adjustment of the lens position. Well, and through the lens fine adjustment device, it is possible to make a slight adjustment based on the adjustment by each electric drive mechanism, and the adjustment accuracy is further improved.

Brief description of the drawing

DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a schematic structural diagram of a lens fine adjustment device according to an embodiment of the present invention; 2 is a schematic exploded view of the lens fine adjustment device shown in FIG. 1;

3 is a schematic structural view of another view direction of the lens fine adjustment device shown in FIG. 1;

4 is a schematic structural diagram of a first bracket mainly showing a lens fine adjustment device according to an embodiment of the present invention; [0025] FIG. 5 is a schematic structural view showing a second bracket of a lens fine adjustment device according to an embodiment of the present invention; 6 is a schematic structural diagram of an assembled lens of a lens adjustment module according to an embodiment of the present invention;

7 is a schematic diagram of a lens adjustment module not equipped with a lens and omitting the explosion of the lens connector frame according to an embodiment of the present invention;

8 is a schematic structural diagram of a base mechanism of a lens adjustment module according to an embodiment of the present invention. [0029] FIG. 9 is a first adjustment mechanism of a lens adjustment module according to an embodiment of the present invention. Schematic;

FIG. 10 is a schematic structural diagram showing a second adjustment mechanism of a lens adjustment module according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic structural view showing the assembled state of the base mechanism, the first adjusting mechanism, and the first electric driving mechanism of the lens adjusting module according to the embodiment of the present invention; FIG.

FIG. 12 is a schematic structural diagram showing the assembled state of the second adjusting mechanism and the second electric driving mechanism of the lens adjusting module according to the embodiment of the present invention; FIG.

FIG. 13 is a schematic structural diagram of a lens adjustment module and a lens connector connected according to an embodiment of the present invention; FIG.

DESCRIPTION OF REFERENCE NUMERALS

[0035] 1000--lens fine adjustment device; 100--base mechanism; 110--second bracket, base body; 111--first protrusion; 112-first port; 113 first communication hole; Three connection holes; 115-fourth connection hole; 11 6- abutment block; 117 spacer; 120-first boss; 121-threaded fixing hole; 130-support; 131-groove; 132-sleeve; 133 cover;

[0036] 2000--lens adjustment module; 200--first adjustment mechanism; 210--first slider; 211--first protrusion; 212-first through slot; 213 through hole; 214 second protrusion 215-second port; 216-third communicating hole; 220-first slider; 221 notch; 222 arc surface; 223-crimping surface; 224-through hole; 230-second boss; Threaded fixing hole; 240--first transmission block; 250--first sliding sleeve; 260--first photoelectric sensor; [0037] 300-second adjustment mechanism; 310-second slider; 311-second protrusion; 312-second slot; 313 second transmission block; 314-rib; 314A limit bump; 315 幵Hole; 316-pick; 317-hook; 318-fourth communication hole; 320 second slider; 321 notch; 322-curved surface; 323-crimping surface; 324-through hole; 330-second sliding sleeve ; 340 second photoelectric sensor;

[0038] 400 first drive mechanism; 410-first motor; 420-first screw; 430-first fixed piece; 431 first sub-fixed piece;

[0039] 500-second drive mechanism; 510-second motor; 520-second screw; 530-second fixed piece; 531 second sub-fixing piece;

[0040] 600--first bracket, lens connecting frame; 610--second communicating hole; 620--shelf plate; 621--first connecting hole; 621A--through hole; 621B--sinking hole; 621C- - step surface; 622 - second connection hole; 623 - accommodation cavity; 63 0 - light transmission portion;

[0041] 700--position adjustment mechanism; 710--threaded connection, 720--thread adjustment member, 730--elastic member;

[0042] SF--threaded fastener; CT--oilless bushing.

BEST MODE FOR CARRYING OUT THE INVENTION

[0043] In order to make the objects, technical solutions, and advantages of the present invention more comprehensible, the present invention will be further described in detail below with reference to FIGS. It is to be understood that the various embodiments described below are merely illustrative of the invention and are not intended to limit the invention.

[0044] Lens fine adjustment device embodiment

[0045] As an object of the present invention, the embodiment of the lens fine adjustment device provided by the present invention is described in detail below. Referring specifically to FIGS. 1 to 3, the lens fine adjustment device 1000 includes a first bracket 600 and includes a second bracket 110. The first bracket 600 and the second bracket 110 are oppositely disposed and adjustablely connected. It should be noted that, for the projection device equipped with the lens fine adjustment device 1000 of the present invention, the first bracket 600 as the lens connector can be used. The second bracket 110 as a base body and a separate component of the optical machine may also be components of the optical machine. For example, the first bracket 600 and the optical machine are integrally formed. The first bracket 600 or the second bracket 110 is for relatively fixed connection with the lens. It will be appreciated by those skilled in the art that the main structure of the lens generally comprises a cylindrical frame in which the lens group is arranged, and on the side of the frame receiving the light beam, an optical lens is provided, on the side of the light emitted by the cylinder There are light-emitting lenses. Received at the lens In the direction of transmission of the light beam, the second bracket 110 of the lens fine adjustment device 1000 is closer to the light exit lens of the lens of the lens fine adjustment device 1000 than the first bracket 600. For the understanding of the relatively fixed connection, the first bracket 600 or the second bracket 110 itself may be directly connected to the lens, or the first bracket 6 00 or the second bracket 110 may be indirectly connected to the lens through some other component. Fixed connection. As a preferred embodiment, the first bracket 600 and the second bracket 110 respectively have a first communication hole 113 and a second communication hole 610 through which the light beam or the lens passes, specifically, the lens passes through the first communication hole 113 and the second communication. In the case of the hole 610, the light incident lens of the lens is located inside the first bracket 600. For the light beam passing through the first communication hole 113 and the second communication hole 610, the lens of the lens is located at the second bracket 110 and the first In addition to the bracket 600, for the case where the light beam passes through the second communication hole 610 and the lens passes through the first communication hole 113, the light incident lens of the lens is located inside the second bracket 110. In the present specification, the case where the lens passes through the first communication hole 113 and the second communication hole 610 will be described as an example unless otherwise specified. The lens trimming device 1000 further includes a plurality of position adjustment mechanisms 700 for adjusting the relative positions of the first bracket 600 and the second bracket 110, each position adjustment mechanism 700 including a connection assembly (not labeled) and an adjustment assembly (not labeled), wherein The connecting assembly movably connects the first bracket 600 and the second bracket 110, and the adjusting assembly applies a force that causes one of the first bracket 00 and the second bracket 110 to move relative to the other, that is, utilizes The connecting assembly realizes the movable connection of the first bracket 600 and the second bracket 110, and adjusts the relative spacing between the first bracket 600 and the second bracket 110 by the adjusting assembly, thereby achieving the pair fixing on the first bracket 600 and the The position of the lens on one of the two brackets 110 is adjusted. Therefore, by providing the connection assembly, the movable connection and the reliable connection of the first bracket and the second bracket are realized, and the first bracket and the first bracket are realized by setting the adjusting assembly. The adjustment of the relative positions of the two brackets, the two cooperate with each other, which is beneficial to the lens fixed on one of the first bracket and the second bracket Fixed, precise positional adjustment. Specifically, in the present embodiment, as a specific embodiment of the connection assembly and the adjustment assembly, the connection assembly includes a threaded connection 710, an elastic member 730, and a first connection through the shelf 620 included in the first bracket 600. The hole 621 and the third connecting hole disposed on the second bracket 110, the adjusting assembly includes a thread adjusting member, a second connecting hole 622 of the through frame plate 620, and an abutting portion disposed on the second bracket 110. Hereinafter, for the sake of simplicity and convenience of description, the position adjustment mechanism is collectively described as including a threaded connection member 710, a thread adjustment member 720, an elastic member 730, a first connection hole 621 penetrating the frame plate 620 included in the first bracket 600, and a second connecting hole 622 and a third connecting hole 114 and an abutting portion disposed on the second bracket 110, wherein the plurality of For three or more. More specifically, the first connecting hole 621 and the third connecting hole 114 are disposed in pairs, and the second connecting hole 622 and the abutting portion are oppositely disposed, and the abutting portion may be the second bracket 110 itself or may be fixed in the second The abutting piece on the bracket 110 may also be an abutting block 116 (described in detail below). The second bracket 110 itself, the abutting piece and the abutting block 116 are preferably made of a wear resistant material such as cast iron or stainless steel. The first connection hole 621 includes a via hole 621A, and the via hole 621A is preferably a light hole, and the first connection hole 621 is entirely a through hole. The third connecting hole 114 is provided with a threaded hole, and the third connecting hole 114 is a blind hole. For the specific embodiment of the threaded hole of the third connecting hole 114, the thread may be directly disposed on the inner peripheral wall of the third connecting hole 114. It is also possible to arrange a hollow hole sleeve having an internal thread on the inner peripheral wall in the third connecting hole 114, the external thread on the outer peripheral wall of the hollow hole sleeve is connected with the internal thread of the third connecting hole 114, and the hollow hole sleeve The hollow portion is defined as a threaded hole, and the threaded hole of the hollow portion is a threaded hole provided in the third connecting hole 114. The hollow hole sleeve is preferably made of a wear-resistant material such as stainless steel or cast iron, for example, made of stainless steel. The wire sleeve is formed to improve the wear resistance and connection reliability of the threaded hole. The threaded connection 710 includes a threaded rod and an external thread, the threaded rod being provided with an external thread for threaded connection with the threaded hole, the threaded rod passing through the through hole 621A, the inner diameter of the through hole 621A being larger than the outer diameter of the threaded rod. The threaded rod may be integrally provided with an external thread or may be a free end provided with a portion for connecting the external thread with the threaded hole and approaching the joint to be a polished rod. The elastic member 730 may be disposed between the connector of the screw connector 710 and the first bracket 600 or between the first bracket 600 and the second bracket 110, and the elastic member 730 is elastically deformed to be the first The bracket 600 applies a pre-tightening force close to the second bracket 110. For example, in the case where the elastic member is disposed between the connecting head of the threaded connecting member and the first bracket, the elastic member such as a spring may be integrally compressed. The outer circumference of the threaded rod of the threaded connecting member between the connecting head of the threaded connecting piece and the first bracket (hereinafter will be further described in detail as an embodiment adopted in the embodiment), or a plurality of The tension spring is stretched and circumferentially disposed on the outer circumference of the threaded rod between the coupling head and the first bracket. For the case where the elastic member is disposed between the first bracket and the second bracket, it may be between the opposite surfaces of the first bracket and the second bracket or on both sides of the first bracket and the second bracket A plurality of tension springs in a state of being stretched and deformed are disposed, and each of the tension springs is preferably disposed adjacent to each of the threaded connectors in a one-to-one correspondence. In this embodiment, an elastic member 730 is disposed between the connecting head of the screwing member 710 and the first bracket 600, and the elastic member 730 is sleeved on the outer circumference of the threaded rod of the threaded connecting member 710, and it is known that the connecting head is outside. The diameter is larger than the outer diameter of the threaded rod, and the elastic member 730 is pressed by the joint and compressed to A bracket 600 applies a preload force proximate to the second bracket 110. The elastic member 730 is preferably a spring. The spring has the advantages of being sensitive to different elastic deformation, large elastic deformation, low cost, and the like. In addition, cylindrical elastic silica gel, elastic rubber, etc. may also be used. The elastic silicone rubber and the elastic rubber should be made of a material which can generate a large amount of elastic deformation. In this embodiment, the elastic member 730 is set as a spring. The second connecting hole 622 is a threaded hole, the thread adjusting member 720 is screwed with the second connecting hole 622, and the free end of the thread adjusting member 720 abuts against the abutting portion, and the thread adjusting member 720 and the elastic member 730 cooperate to adjust the first The relative spacing of the bracket 600 and the second bracket 110, that is, the combined force exerted by the threaded adjusting member 720 and the elastic member 730 on the first bracket 600 and the second bracket 110, achieves the above adjustment. Incidentally, when the first bracket 600 and the second bracket 110 are in contact with each other, the distance between the two is 0. The threaded connecting member 710 and the thread adjusting member 720 may specifically adopt a stud, a screw, or the like. In the embodiment, the threaded connecting member 710 and the thread adjusting member 720 are both studs. It can be understood that the threaded connection of the threaded rod of the threaded connector 7 10 and the threaded hole of the third connecting hole 114 realizes the connection of the first bracket 600 and the second bracket 110 through the thread adjusting member 720 and the elastic member 730. Cooperating, so that the relative distance between the threaded rod of the threaded connecting member 710 and the through hole 621A is changed, the relative distance between the first bracket 600 and the second bracket 110 is changed, thereby realizing the relative relationship between the first bracket 600 and the second bracket 110. Activity adjustment of the location. In more detail, in a case where the free end of the thread adjusting member 720 abuts against the abutting portion and the first bracket 600 and the second bracket 110 have a relative spacing, when the user rotates the thread adjusting member 720 to make the thread adjusting member 720 The length of the threaded rod screwed into the second connecting hole 622 is increased, and the free end of the thread adjusting member 720 rotates relative to the abutting portion, and the thread adjusting member 720 can drive the first bracket 600 to overcome the preload force to generate a distance. The displacement of the second bracket 110, the degree of compression of the elastic member 730 is further increased, thereby increasing the relative spacing of the first bracket 600 relative to the second bracket 110, as can be referred to, when the user rotates the thread adjusting member in the opposite direction 720 is such that the length of the threaded rod of the thread adjusting member 720 is reduced into the second connecting hole 622, and the free end of the thread adjusting member 720 is rotated relative to the abutting portion, and the first bracket 600 is applied to the elastic member. Under the pre-tightening force, the displacement of the second bracket 110 is generated, and the degree of compression of the elastic member 730 is correspondingly reduced, thereby reducing the relative position of the first bracket 600 relative to the second bracket 110. Therefore, from the above said, to the lenses and easily adjusted relative to the first bracket 600 and second bracket 110, the lens is in the receiving position of the best techniques for example through the beam of the first bracket 600. And, since a plurality of position adjustment mechanisms 700 are provided, one of them can be flexibly selected or larger than The thread adjustment member 720 in one of the position adjustment mechanisms 700 is adjusted so that sufficient lens adjustment freedom can be obtained.

[0046] Referring to the above description, as an alternative embodiment, the structure of the lens fine adjustment device is substantially the same, except that the first connection hole and the second connection hole are disposed to penetrate the second bracket, and the third connection hole is disposed. On the first bracket, the abutting portion is disposed on the first bracket and disposed opposite to the second connecting hole, that is, in an alternative embodiment, the thread adjusting member adjusts the movement of the second bracket relative to the first bracket, Further, the abutting portion further includes a fourth connecting hole disposed on the first bracket, the fourth connecting hole and the second connecting hole are disposed in pairs, and the abutting block is disposed in each of the fourth connecting holes, the thread adjusting member The free end pair abuts against the abutting block. Further, the first connecting hole penetrating the second bracket is a stepped hole including a through hole, a counterbore facing away from the first bracket, and a stepped surface between the through hole and the counterbore, and the stepped surface of the threaded connecting member An elastic member is sleeved on the outer circumference of the threaded rod between the connector of the threaded connector.

[0047] According to the above description of the preferred embodiment and alternative embodiments, the difference between the two is mainly that, in a preferred embodiment, the thread adjustment member 720 is adjusted on the side facing the first bracket 600, and In an alternative embodiment, the thread adjusting member is adjusted on the side opposite to the first bracket 600 and facing the second bracket 110. Hereinafter, the lens fine adjusting device embodiment of the present invention will be further described in detail using a preferred embodiment. Other lens fine adjustment device embodiments adopting alternative embodiments may be referred to, and details are not described herein again.

Referring to FIGS. 2 and 5, in the present embodiment, the elastic member 730 is sleeved on the outer circumference of the threaded rod of the threaded connecting member between the connecting head of the threaded connecting member 710 and the first bracket 600. The connecting portion includes a fourth connecting hole 115 disposed on the second bracket 110. The fourth connecting hole 115 and the second connecting hole 622 are disposed in pairs, and an abutting block 116 is disposed in each of the fourth connecting holes 115. The free end of the member 720 abuts the abutment block 116. By this arrangement, since the abutting block 116 has a very good wear resistance, the free end of the thread adjusting member 720 is well abutted against the abutting block 116 and is well rotated relative to the abutting block 116, and is sufficient The block 116 is fixed in the fourth connecting hole 115, and is not easily displaced or peeled off, thereby improving reliability. In addition, a spacer 117 surrounding the third connecting hole 114 and the fourth connecting hole 115 may be disposed on the surface of the second bracket 110, and the spacer 117 may be used to assist in adjusting the first bracket 600 and the second bracket 110. Relative spacing.

[0049] Referring to FIGS. 2 and 4, further, the first connection hole 621 includes a through hole 621A and a second support 1 a counterbore 621B of 10 and a stepped hole of the stepped surface 621C between the via 621A and the counterbore 621B, and a peripheral sleeve of the threaded rod between the stepped surface 621C of the threaded joint 710 and the joint of the threaded joint 710 A spring is provided as the elastic member ₇₃₀ . It can be understood that when the first bracket 600 and the second bracket 110 have a preset relative spacing 吋, the relative spacing can be further increased to increase the amount of compression that the spring is further compressed. In addition, the outer circumference of the elastic member 730 is surrounded by the outer circumference of the counterbore 621B, so that a free end of the elastic member 730 can be well positioned, and the contact surface of the joint head with the elastic member 730 and the step surface 6 21C are preferably better. All are set to be flat, so the elastic member 730 is evenly loaded and has high stability.

2 to 5, as a further improvement, the second bracket 110 is configured as a hollow substantially rectangular body plate member, and the first bracket 600 corresponds to four at a position where the substantially rectangular body member is adjacent to the four vertex angles. A position adjustment mechanism 700 is disposed at each of the positions of the apex angles. According to the above description, more specifically, a position adjustment mechanism 700 can be understood to include a third connection hole 114 and a fourth connection hole 115 disposed adjacent to a top corner position of the second bracket 110, corresponding to the first bracket 600. A first connecting hole 621 and a second connecting hole 622 are provided at a position of an apex angle of the second bracket 110, and a threaded connecting member 710, a thread adjusting member 720 and an elastic member 730 which are engaged with the respective holes. In this case, since the number of the position adjusting mechanisms 700 is set to four, when the thread adjusting members 720 are rotated and adjusted in the same direction and the number of rotating turns is substantially the same, the first bracket 600 is substantially parallel with respect to the second bracket 110. The movement of the threaded connectors 710 in the axial direction allows the movement of the lens in the axial direction to be adjusted. When the number of turns or the direction of rotation of each thread adjusting member 720 is different or only a part of the thread adjusting member 720 is rotated and adjusted, the first bracket 600 can be connected to the second bracket 110 along parallel to each thread. The movement of the member 710 in the axial direction and the rotation centered on the line passing through the axis of the two threaded connectors 710 or the rotation of the line passing through the axis of the two threaded connectors 710 as a center line. Thereby, the position of the lens can be adjusted in a combination of movement and rotation or in a rotating manner, thereby realizing multi-directional adjustment of the lens position. In addition, it should be understood that the position adjustment mechanism 700 can also be set to other numbers according to actual needs.

Referring to FIG. 2, in the case where the lens passes through the first communication hole 113 and the second communication hole 610, as a specific embodiment, the first bracket 600 further includes a housing extending away from the second bracket 110. The cavity 623, for example, the first bracket 600 includes a shelf 620, the shelf 620 extends away from the second bracket 110 to form the receiving cavity 623, the lens is partially received in the receiving cavity 623, and the shelf 620 is provided with light supply. The beam is incident on the light-transmitting portion 630 of the lens, and the light-transmitting portion 630 includes a light-transmitting lens. The light-transmitting lens is sealingly fixed to the frame plate 610. It is known that the light-injecting lens of the lens is located in the receiving cavity 623 and receives the light-transmitting lens. The light incident by the portion 630, and the side of the first bracket 600 opposite to the second bracket 110 is generally fixedly connected to the light machine of the projection device. Therefore, adjusting the position of the lens by the lens fine adjustment device 1000 can make the lens at The optimal position of the light beam emitted by the light machine is received, thereby obtaining excellent projected image quality.

In a further embodiment, the lens trimming device further includes a lens mount (not shown), the lens is at least partially fixedly mounted in the lens mount, and the lens mount includes a second bracket 110. Preferably, the lens holder is a fixed frame with an upper opening and a cavity, and the fixing frame includes a second bracket 110, and most of the structure of the lens is accommodated in the cavity through the opening, and the entrance lens adjacent to the lens The portion of the structure passes through the first communication hole 113 of the second bracket 110 and the second communication hole 610 of the first bracket 600. The outer circumference of the cylindrical frame of the lens is provided with a card table. Correspondingly, a card slot is formed on the fixing frame, and the lens frame and the card slot are matched, and the lens is fixedly connected with the fixing frame. Therefore, referring to the above description, When the relative position 吋 of the first bracket 600 and the second bracket 110 is adjusted, the relative position of the first bracket 600 and the fixed frame is adjusted, thereby realizing the positional adjustment of the lens relative to the first bracket 600.

[0053] Lens adjustment module embodiment

[0054] As another object of the present invention, the embodiment of the lens adjustment module provided by the present invention is described in detail below. Referring specifically to FIGS. 6 to 13, the lens adjustment module 2000 includes a first adjustment mechanism 200, The adjustment mechanism 300 and the lens fine adjustment device in any of the lens fine adjustment device embodiments of the lens fine adjustment device embodiment having the lens holder, and the structure of the lens fine adjustment device, please refer to the above, and will not be described again, and For convenience of description, the lens connector is used as the first bracket described above, and the base body is used as the second bracket. The lens connector and the base body function as the first bracket and the second bracket, respectively. Play the same role. In the direction in which the light beam incident on the lens attachment frame 600 is transmitted, the base body 110, the first adjustment mechanism 200, and the second adjustment mechanism 300 are stacked in this order from the lens frame 600 in the near and far directions. In addition, in other embodiments, the order in which the base mechanism, the first adjustment mechanism, and the second adjustment mechanism are sequentially stacked may be a base body that is included perpendicular to the base mechanism (described further below). In the vertical direction of the plane, the second adjustment mechanism and the first adjustment mechanism are sequentially stacked from the near and the far side with respect to the base mechanism, the second adjustment mechanism is disposed on the first adjustment mechanism, and the second adjustment mechanism is fixed to the lens connection. Therefore, it is relevant to the present invention In the following description, it is intended to explain the connection relationship between the first adjustment mechanism 200 and the base mechanism 100, and the second adjustment mechanism 300 and the first adjustment mechanism 200 are connected in an active manner, and does not limit the three in the spatial orientation. Specific location relationship. The lens adjustment module 2000 further includes a first electric drive mechanism 400 and a second electric drive mechanism 500, wherein the first electric drive mechanism 400 is drivingly coupled to the first adjustment mechanism 200 and drives the first adjustment mechanism 200 to drive the second adjustment mechanism. 300 drives the lens JT to move in the first direction. The second electric drive mechanism 500 is drivingly coupled to the second adjustment mechanism 300 and drives the second adjustment mechanism 300 to cause the second adjustment mechanism 300 to drive the lens JT to move in a second direction perpendicular to the first direction, for ease of understanding, according to FIG. 6 The arrows in the middle axis indicate that the first direction includes both Y- and Y+ directions, and the second direction includes both X- and X+ directions. The first adjustment mechanism 200 includes a first slider 210, and the second adjustment mechanism 300 includes a second slider 310 for fixedly connecting with the lens JT, and the first slider 210 and the second slider 310 respectively include a third communication hole 216 and The fourth communication hole 318, the first communication hole 113, the second communication hole 610, the third communication hole 216, and the fourth communication hole 318 are substantially concentric and are used for the lens JT to pass therethrough. It can be further understood that, as described above with respect to the stacked connection arrangement, since the second adjustment mechanism 300 is movably coupled to the first adjustment mechanism 200 in a relatively movable manner, the first electric drive mechanism 400 drives the first adjustment mechanism 200 relative to the base mechanism 100. Moving in the first direction and driving the second adjustment mechanism 300 to move accordingly, indirectly achieving position adjustment of the lens JT fixed on the second slider 310 in the first direction, and the second electric drive mechanism 500 driving the second adjustment mechanism 300 moves relative to the base mechanism 100 in the second direction to directly adjust the position of the lens JT fixed to the second slider 310 in the second direction, so that the lens JT can be implemented relative to the base mechanism 100. Position adjustment in one direction and second direction. Therefore, the lens adjustment module 2000 of the present embodiment is not only compact in structure, but also has a small footprint, and the use of an electric drive structure ensures high precision in adjusting the position of the lens. Moreover, by providing a plurality of position adjusting mechanisms 700, the base body 110 and the lens connecting frame 600 are movably movable, and therefore, the relative adjustment between the base body 110 and the lens connecting frame 600 can be adjusted by manual adjustment. The position can also be used to adjust the position of the lens JT relative to the lens connector 600, so that the user can adjust the lens position by selecting the mode of the electric drive and manually adjusting the relative position according to actual needs. For example, in general, the electric drive mode can be selected to quickly adjust the lens position, or the manual adjustment of the relative position can be used to adjust the lens position more slightly. It can be seen that the lens adjustment module 2000 of the embodiment can meet the different requirements of the lens position adjustment and is flexible to use. Referring to FIG. 6 to FIG. 10, as a specific implementation manner of the lens adjustment module of the embodiment, two sets of first support portions disposed along the first direction are disposed on the base body 110, and the first adjustment is performed. The mechanism 200 includes a first slide bar 220 interposed in the first slider 210 and two sets of second support portions disposed on the first slider 210 in the second direction, and the second adjustment mechanism 300 includes the second slider 310 a second sliding bar 320, the first sliding bar 22 is supported and fixed on the first supporting portion, the second sliding bar 320 is supported and fixed on the second supporting portion, the first sliding block 210 and the second sliding block 310 is moved under the guidance of the first slider 220 and the second slider 320, respectively. The lens adjustment module 2000 further includes a first sleeve 250 respectively disposed on the first slider 210 and a pair of sleeves respectively disposed on the outer circumference of the first slider 22, and a peripheral wall of the second slider 310. The pair of sleeves are respectively sleeved on the outer circumference of the second sliding rod 320.

[0056] The first support portion and the second support portion may be, for example, a hole sleeve (not shown) that can adjust the aperture size of the center hole and is fixed to the base body and the first slider. The hole sleeve is integrally formed with the base body and the first sliding block respectively, and the hole sleeve has two arms with internal threads and a spacing gap between the two arms in the radial direction of the central hole, so Insert the corresponding hole sleeves at both ends of the sliding rod and the second sliding rod, and gradually reduce the aperture of the hole sleeve by continuously increasing the number of rotations of the screws in the internal threads of the two arms, that is, reducing the spacing The distance in the radial direction, therefore, the purpose of supporting and fixing the first slide bar and the second slide bar can be achieved, and the adjustable hole sleeve can be adapted to the first slide bar and the second slide bar of a plurality of different outer diameters, but The structure is more complicated and the processing cost is higher. For example, the first support portion and the second support portion may include clamps and grooves (not shown) that respectively cooperate with each other. Specifically, the base body and the first slider are respectively provided with arcs. a groove of the surface, a part of the circumferential surface of the two ends of the first sliding rod and the second sliding rod is in contact with the circular arc surface of the corresponding groove, and the clamp includes a middle portion for the first sliding rod or the second sliding rod Two elongate arms of the arc surface of the other end of the two ends of the two ends, each of the elongate arms and the mating groove are correspondingly provided with threaded holes on both sides, and the extension arm and the concave are screwed by screws or the like The threaded holes on both sides of the groove are fixedly connected, so that the first slide bar and the second slide bar can be supported and fixed, but the assembly process is large. In order to obtain a technical effect of relatively simple structure and high assembly efficiency, in the present embodiment, referring specifically to FIGS. 7 to 10, the first adjustment mechanism 200 and the second adjustment mechanism 300 each include a plurality of screw fixing members SF, two sets of first The support portion and the two sets of second support portions are respectively two pairs of first bosses 120 and two pairs of second bosses 230. The first bosses 120 and the second bosses 230 have inverted trapezoidal faces or curved faces. In the example, an inverted trapezoidal surface is used. The first slide bar 220 and the second slide bar 320 both include a D-shaped cross section. a substantially cylindrical rod of a cylinder between the two free ends and the two free ends, wherein the D-shaped cross section is formed by notches 221, 321 provided at the free ends, that is, corresponding to the D-shaped cross section, each free end comprising Curved surface

222, 322 and the crimping faces 223, 323 formed by the notches 221, 321 are preferably arcuate faces. Through holes 224, 324 are provided between the curved faces 222, 322 and the crimping faces 223, 323. The curved faces 222, 322 are offset from the inverted trapezoidal faces of the first boss 120 and the second boss 230, such as screws. The screw fixing members SF are respectively connected to the screw holes 222 and 322 of the first boss 120 and the second boss 230 through the through holes 224 and 324, and the screw fixing holes 121 and 231 of the first boss 120 and the second boss 230, for example, the screw holes. Screw head and crimping surface

223, 323 are pressed to ensure that the first slider 220 and the second slider 320 are reliably supported and fixed by the first boss 120 and the second boss 230.

Referring to Figures 7, 11, and 12, the lens adjustment module 2000 of the present embodiment will be described in more detail below. The first electric drive mechanism 400 of the lens adjustment module 2000 includes a first motor that is driven and connected, for example, by a coupling. 410 and the first screw 420, the second electric drive mechanism 500 includes a second motor 510 and a second screw 520 that are drivingly coupled by, for example, a coupling, the first screw 420 and the second screw 520 are respectively coupled to the first slider 210 and The second slider 310 is drivingly coupled, that is, the threaded portions of the first screw 420 and the second screw 520 are engaged with the threaded portions of the first slider 210 and the second slider 310, and the threaded portion may be directly formed at the first The self-blocks of the slider 210 and the second slider 310 are disposed on the transmission members respectively fixed to the first slider 210 and the second slider 310. The first screw 420 and the second screw 520 are respectively driven by the driving of the first motor 410 and the second motor 510 and the first slider 210 and the second slider 310 are generated along the axis direction of each corresponding screw by the screw drive connection. The movement. Further, the first motor 410 and the second motor 510 may be fixedly connected to the base body 110 and the first slider 210 through the first L-shaped first fixing piece 430 and the second fixing piece 530, respectively, specifically, substantially L The first fixing piece 430 and the substantially L-shaped second fixing piece 530 each include two first sub-fixing pieces 431 and two second sub-fixing pieces 531 disposed at substantially right angles, and two first sub-fixing pieces 431 is respectively provided with a pair of screw connection holes corresponding to the base body 110 and the first motor 410, and the two second sub-fixing pieces 531 are respectively provided with a pair of screw connection holes corresponding to the protrusion and the second motor 510, respectively The pair of threaded connection holes are respectively screwed to a screw, for example, as a threaded fastener SF. From the above, the first motor 410 and the second motor 510 are fixed by the L-shaped first fixing piece 430 and the second fixing piece 530 such that the first motor 410 and the second motor 510 are respectively opposed to the base body. 110 and the first slider 210 are indirectly connected in non-direct contact, and can buffer the first motor 410 and the second motor 510 to operate. The unavoidable vibration of the raw, thereby preventing the base body 110 and the first slider 210 from being affected by the vibration and causing a large vibration or even displacement, causing an unfavorable situation in which the lens JT produces an undesired positional change, in addition, due to The transmission connection between each motor and its corresponding screw is generally a rigid connection. By providing the L-shaped first fixing piece 430 and the second fixing piece 530, a certain relative movable space can be provided for each corresponding motor and the screw, thereby avoiding each motor and The damage caused by the excessive torque generated by the screw due to excessive interaction improves the reliability of the lens adjustment module.

7 and 8, in order to securely fix the first screw 420, as a further improvement, the base mechanism 100 further includes a pair of rod fixing assemblies for fixing the ends of the first screw 420, each rod fixing assembly. The support 130 includes a support 130 disposed on the base body 110 and a cover plate 133 fixedly coupled to the support 130. The support 130 has a slot 131 for receiving the sleeve 132. The opposite ends of the first screw 420 are respectively inserted into the sleeve. 132, a pair of threaded holes are correspondingly provided on the cover plate 133 and the support 130 by screw connection, thereby fixing the cover plate 133 and the support 130, and the cover plate 133 fixes the sleeve 132 in the groove 131.

Referring to FIGS. 7 to 9, the first slider 210 of the lens adjustment module 2000 further includes a first protrusion 211, and the first protrusion 211 includes a first side away from the first side of the first slider 210. The first communication hole 113 and the first through groove 212 extending through the first screw 420 extending in a direction parallel to the second direction, preferably, at the free end of the first protrusion 211, may be disposed for the second The fixing piece 530 is fixedly connected to the protruding base, and the first transmission block 240 screwed to the first screw 420 is fixed in the first through groove 212. For example, the first transmission block and the first protruding portion are correspondingly provided with a threaded hole, A screw member such as a screw is connected to each of the threaded holes to fix the first transmission block in the first through groove to ensure reliable transmission. The first transmission block 240 may specifically be a cylindrical body with an internally threaded hole, for example, the first transmission block 240 is a movable nut. The threaded connection of the first transmission block 240 and the first screw 420 can be understood as the cooperation of the internal thread and the external thread. During the rotation of the first screw 420, the internal thread of the first transmission block 240 is received by the first screw 420. The force of the thread moves in the first direction, so that the first transmission block 240 abuts one of the pair of first groove surfaces opposite to the first through groove 212 in the first direction and passes through one of the first groove surfaces The force is applied to drive the movement of the first protrusion 211. It is understood that the first transmission block 240 functions as the transmission member. From the above, by providing the first transmission block 240 on the first slider 210, the first transmission block 240 is in surface contact with the first groove surface, so that the first transmission block 240 applies a uniform force to the surface of the first groove, thereby The first slider 210 moves smoothly, and the first transmission block 240 can be precisely controlled by controlling the rotation angle of the first screw 420. The moving distance of the first slider 210.

[0060] Referring to FIGS. 7 to 10, as a first embodiment in which the first slider 220 and the second slider 320 are respectively inserted into the first slider 210 and the second slider 310, in the first slider 210 and a first sliding sleeve 250 having a first guiding hole is disposed on the opposite second side of the first side, the first sliding sleeve 250 is sleeved on the outer circumference of the first sliding rod 220, and the first protruding portion 211 further includes The through hole 213 between the three communication holes 216 and the first through groove 212 for the first sliding rod 220 to pass through is provided on the peripheral wall of the second sliding block 310 with two pairs of oppositely disposed and having the second guiding hole The second sliding sleeve 330 is sleeved on the outer circumference of the second sliding rod 320. It can be seen that the through hole 213 similarly functions as the first sliding sleeve 250. Thus, the first sliding block 210 can pass through the first sliding sleeve 250 and the through hole 213 respectively on a first sliding rod 220. Guided to move parallel to the first direction, the second slider 310 can be moved parallel to the second direction by the two pairs of second sliding sleeves 330 respectively under the bow of a second sliding rod 320, and thus, through corresponding The cooperation of the sliding sleeve and the sliding rod, the through hole and the sliding rod can largely reduce the frictional resistance during the movement of the sliding sleeve or the through hole relative to the sliding rod, and the first slider 210 and the second sliding block 310 are secured. The movement has excellent smoothness. In addition, in other embodiments, in order to further reduce the frictional resistance, an oil-free bushing CT may be disposed in each of the first sliding sleeve 250, the through hole 213, and the second sliding sleeve 330. Preferably, the first sliding sleeve 250 and the second sliding sleeve are integrally formed with the first sliding block 210 and the second sliding block 310, respectively, so that the structure can be simplified and the cost can be reduced. In addition, by providing the first protrusion 211 having the through hole 213 and the first through groove 212, the first slide bar 220 and the first screw are respectively guided and driven to the first slider 210, and the operation is ensured. The axes of the first slider 220 and the first screw 420 have a high degree of parallelism, so that the movement of the first slider 210 is smooth and accurate, and the overall structure of the lens adjustment module is compact.

[0061] Preferably, the projections of the first sliding bar 220 and the second sliding bar 320 in the base body 110 are substantially square, and the square may be rectangular or square. The base body 110 and the first slider 210 are substantially rectangular body plates respectively having a first communication hole 113 and a third communication hole 216, and the second slider 310 is a substantially cylindrical plate member having a fourth communication hole 318. . By arranging the base body 110 and the first slider 210 into a substantially rectangular body plate substantially cylindrical plate member, the stacked arrangement of the two can be facilitated, and the substantially cylindrical plate member can be better by the second slider 310. Adapted to the lens JT, together play a role in reducing the space occupied by the lens adjustment module.

[0062] With reference to FIGS. 8 to 10, in order to more accurately control the movement of the first slider 210 and the first slider 210, Preferably, a matching first port 112 and a first photo sensor 260 are respectively disposed on the base body 110 and the first slider 210, and phases are respectively disposed on the first slider 210 and the second slider 310. The second port 215 and the second photosensor 340 are matched, and it can be seen that the positions of the mating ports and the photoelectric sensors can be adjusted accordingly. The first opening 112 extends in the first direction, and the second opening 215 extends in the second direction. Preferably, the first opening 112 is disposed in the first direction to be the first distance with the first slider 210. The preset moving distance of the direction is equal, and the extending distance of the second port 215 in the first direction is set to be equal to the preset moving distance of the second slider 310 in the second direction, and each photosensor includes a light emitting portion and a light receiving portion, each of The mouthpiece allows the detection light emitted by the light-emitting portion to be received by the light-receiving portion, and specifically, the lens adjustment module includes a controller or a projection device equipped with the lens adjustment module, and includes a controller, each photoelectric The sensor and each of the electric driving mechanisms are respectively electrically connected to the controller. When the first slider 210 or the second slider 310 is moved and moved, the light emitting portion of the corresponding photoelectric sensor emits detection light, if the corresponding photoelectric sensor The corresponding light receiving unit can receive the detection light, and the controller determines that each of the sliders is located in the preset moving distance, and the controller allows the motors included in the electric driving mechanisms to work, thereby Driving the first slider 210 or the second slider 310 to move, and if the corresponding light receiving portion of the corresponding photoelectric sensor cannot receive the detection light, the controller determines that each slider is about to be outside the preset moving distance, and the controller The control motor stops working, and the movement of the first slider 210 and the second slider 310 is ensured not to exceed the preset moving distance, which helps to adjust the position of the lens JT reliably and accurately. In addition, preferably, if a certain bracket has been accidentally located outside the preset moving distance, the controller controls the corresponding motor to drive the certain bracket to move within its preset moving distance, for example, the preset moving distance. In one part, to maintain the normal operation of the certain bracket.

[0063] Further, the first port 112 is disposed on the first protrusion 111 of one side of the base body 110, and the second port 215 is disposed on the second protrusion 214 of the first sliding sleeve 250, the first photoelectric The sensor 260 is fixed on the third side of the first slider 210, and the second photosensor 340 is fixed on the outer circumference of the second slider 310. In this way, the structure of each port and the fixing of each photoelectric sensor is basically utilized. The integral molding method is formed, so that it is not necessary to provide other split components in a targeted manner, so that the overall structure of the lens adjustment module is compact, the space is small, and the cost is reduced.

Referring to FIGS. 7, 11, and 12, as an alternative embodiment, the second slider 310 includes, for example, a second protrusion 311 extending away from the outer circumference thereof, and the second protrusion 311 is provided with a second portion. The second thread that the screw 520 passes through a second transmission block 313 is screwed into the second through slot 312. For example, the second transmission block and the second protrusion correspond to the threaded holes, and are connected by screws such as screws. A threaded hole is used to fix the second transmission block in the second through slot to ensure reliable transmission. The second transmission block 313 may specifically be a cylindrical body with an internally threaded hole, for example, the second transmission block 313 is a movable nut. The threaded connection of the second transmission block 313 and the first screw can be understood as the cooperation of the internal thread and the external thread. During the rotation of the second screw 520, the internal thread of the second transmission block 313 is subjected to the external thread of the second screw. The force moves in the second direction, so that the second transmission block 313 abuts one of the pair of second groove surfaces of the second through groove 312 opposite in the second direction and exerts a force on one of the second groove surfaces In order to drive the movement of the second protruding portion 311, it is understood that the second transmission block 313 functions as the transmission member. Therefore, by providing the second transmission block 313 on the second slider 310, the second transmission block 313 is in surface contact with the second groove surface, so that the second transmission block 313 exerts a uniform force on the surface of the second groove. The second slider 310 can be smoothly moved. In addition, by controlling the rotation angle of the second screw 520, the moving distance of the second transmission block 313 can be accurately controlled, and then the second sliding can be driven by the movement of the second transmission block 313. Block 310 moves precisely.

Referring to FIGS. 6 and 10, in order to achieve good fixation of the second slider 310 and the lens JT, preferably, the second slider 310 is disposed at equal intervals along the circumferential direction of the fourth communication hole 318. a rib 314, between the two adjacent ribs 314 is provided with a bore 315, each of the bores 315 is equally spaced between the two adjacent ribs 314 in the circumferential direction, the plurality of ribs 315 The plurality of protrusions (not shown) provided for the outer circumference of the frame of the lens JT are passed through and rotated by a certain angle, so that the plurality of ribs 314 and the plurality of protrusions are rejoined and joined to each other, thereby passing through the rib The one-to-one interference fit of the plate 314 with the protrusions prevents the lens JT from coming off the second slider 310. When it is necessary to separate the lens JT from the second slider 310, the plurality of protrusions may be rotated in opposite directions to completely offset the plurality of protrusions and the plurality of ribs 314 and to face the plurality of pupils 315. Yes, the above-described rotation of the protrusion of the lens JT can be realized by manually rotating the entire frame of the lens JT. Therefore, when the first slider 2 10 moves in the first direction, the first slider 210 moves the second slider 310 through the first slider 220 during the movement, and the second slider 310 passes through the ribs 314. Applying a force to each of the protrusions to drive the lens JT to move in the first direction, and when the second slider 310 moves the second direction in the second direction, the second slider 310 applies a force to each of the protrusions through the ribs 314 The driving lens JT moves in the second direction.

[0066] Further, in conjunction with FIG. 12, in order to better achieve the fixed connection of the second slider 310 and the lens JT, further, a limiting bump is disposed on a surface of one of the ribs 314 facing the first slider 210. 314A, The limiting protrusion 314A approaches the adjacent pupil 315 in the direction of rotation of the plurality of protrusions, and the limiting protrusion 314A abuts against the end surface of one of the protrusions. The positional protrusion 314A of the first slider 210 abuts against the convex end surface of the lens JT, and can indicate whether the protrusions of the lens JT are rotated into position after passing through the respective holes 315, thereby avoiding the rotation of the protrusion of the lens JT. The angle is too large or too small to ensure that the plurality of ribs 314 and the plurality of projections are well engaged with each other.

[0067] In order to better connect the second slider 310 to the lens JT, the second slider 310 is provided with a latching mechanism, and the latching mechanism includes a paddle 316 and a hook 317, and the hook 317 is used. A latch is formed on the slot of the lens, and a bayonet is disposed on a surface of the rib 314 facing away from the first slider 210. The paddle 316 is coupled to a torsion spring and can be elastically reset to move the hook 317. Entering or exiting the bayonet to realize the latching or unlocking of the hook 317 with the card slot. Therefore, in the latching state, the lens JT and the second slider 310 are locked and fixed, only in the unlocked state, the lens The protrusions of the JT can be rotated to oppose the plurality of pupils 315 and further pulled away from the second slider 310.

Projection device embodiment

[0069] As a further object of the present invention, with reference to FIGS. 6 and 13, the present invention further provides a projection apparatus including a lens JT, an optical machine, and a lens in any of the above lens adjustment module embodiments. The lens module JT is fixedly connected to the second slider 310, and the lens connector frame 600 is respectively connected to the base body 110 and the optical machine, and the lens connector frame 600 is disposed on the shelf 620 away from the base body 110 for light. The light beam emitted from the machine passes through and is incident on the light transmitting portion 630 of the lens JT. It should be noted that the lens connector frame may be a separate component for connecting the base body and the optical machine, or may be a component included in the optical machine, for example, the lens connector frame and the optical machine are integrated. Thereby, the light beam generated by the light source, the optical lens group and the like included in the light projecting device is incident on the lens JT through the light transmitting portion 630, and passes through the lens fine adjustment device of the lens adjusting module, the first adjusting mechanism, and The second adjustment mechanism functions to adjust the lens position, so that the lens JT can be placed at the optimum position of the light beam incident by the light transmitting portion 630, and the projected image projected by the lens JT can be made to have excellent quality.

The above is a further detailed description of the present invention in conjunction with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. For those skilled in the art to which the present invention pertains, several simple derivations or substitutions can be made without departing from the inventive concept. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on those skilled in the art. Can be realized as a basis, when the combination of technical solutions is contradictory or impossible to achieve, it should be considered that the combination of such technical solutions does not exist, and is not within the scope of protection required by the present invention.

[0071] In the present invention, the lens fine adjustment device is not limited to be applied to the lens adjustment module, and may be applied to various occasions in which the lens position can be adjusted independently, unless otherwise specified and limited. The term "fine tuning" in the "lens fine-tuning device" is merely to show that the degree of change to the lens position is smaller than that of the first electric driving mechanism and the second electric driving mechanism of the lens adjusting module. However, it is not a limitation on the degree of detail. The term "roughly" is intended to provide an overview of the shape, angle, position, quantity, etc., and does not require precise limits. The terms "connected", "fixed", etc. should be understood broadly. For example, "fixed" may be a fixed connection, or may be a detachable connection, or integrated; it may be directly connected, or may be indirectly connected through an intermediate medium, The internal connection of two components or the interaction of two components. The term "adjustment" is used to emphasize the change of the position of the lens, and the term "adjustment" is used to emphasize the technical means used to change the position of the lens, but the two should not be separated or divided, but should be used in combination with each other. The inventive concept of the present invention is understood. The terms "first", "second" and the like are used for the purpose of description only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, technical features defining "first", "second", etc., may explicitly or implicitly include one or more of the features. In addition, the "first direction" and the "second direction" described in the drawings and the drawings are respectively described by taking the horizontal and vertical directions as an example, but according to the actual working condition of the lens adjustment module, the first direction and The second direction can also be the corresponding other direction. Therefore, the specific meaning of the above terms in the present invention can be understood by those skilled in the art on a case-by-case basis.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure made by the specification and the drawings of the present invention is directly or indirectly applied to other related technical fields. For example, the technical field of position adjustment of a camera lens, position adjustment of a microscope lens, and the like are all included in the patent protection scope of the present invention.

Claims

Claim

[Claim 1] 1. A lens fine adjustment device, comprising:

a first bracket and a second bracket, the first bracket and the second bracket are adjustable movable connections, and the first bracket or the second bracket is used for relatively fixed connection with the lens, and the lens In the direction of transmission of the received light beam, the second bracket is closer to the light exiting lens of the lens than the first bracket, and the first bracket and the second bracket respectively have a light beam or the a first communication hole and a second communication hole through which the lens passes; a plurality of position adjustment mechanisms for adjusting a relative position of the first bracket and the second bracket, each of the position adjustment mechanisms including a connection assembly and an adjustment assembly Wherein the connecting assembly movably connects the first bracket and the second bracket, the adjusting component applying a movement of one of the first bracket and the second bracket relative to another Force.

[Claim 2] 2. The lens fine adjustment device according to claim 1, wherein:

The connecting assembly includes a threaded connector, an elastic member, a first connecting hole penetrating through one of the first bracket and the second bracket, and two disposed on the first bracket and the second bracket The third connecting hole on the other one, the adjusting assembly includes a thread adjusting member, a second connecting hole penetrating the first connecting hole through one of the first bracket and the second bracket, and And the third connecting hole is disposed at an abutting portion of the same one of the first bracket and the second bracket, wherein the first connecting hole and the third connecting hole are disposed in pairs, The second connecting hole and the abutting portion are oppositely disposed, the first connecting hole includes a through hole, the third connecting hole is provided with a threaded hole, and the threaded rod of the threaded connecting member is provided for the thread An external thread connected to the hole, the threaded rod passing through the through hole, wherein the elastic member is disposed between the connecting head of the threaded connecting member and the first bracket or the second bracket or Between the first bracket and the second bracket, the The elastic member is elastically deformed to apply a biasing force to the first bracket to the second bracket or to the second bracket, and the second connecting hole is a threaded hole, a thread adjusting member is screwed to the second connecting hole, and a free end of the thread adjusting member abuts against the abutting portion, and the thread adjusting member and the elastic member cooperate to Adjusting the relative spacing of the first bracket and the second bracket.

3. The lens fine adjustment device according to claim 2, wherein:

The elastic member is sleeved on an outer circumference of a threaded rod of the threaded connecting member between the connecting head of the threaded connector and the first bracket or the second bracket, and the abutting portion is disposed at a fourth connecting hole on the first bracket or the second bracket, the fourth connecting hole and the second connecting hole are disposed in pairs, and an abutting block is disposed in the fourth connecting hole, the thread The free end of the adjusting member abuts against the abutting block.

4. The lens fine adjustment device according to claim 2, wherein:

The first connecting hole is a stepped hole including the through hole, a counterbore facing away from the first bracket or the second bracket, and a stepped surface between the through hole and the counterbore, The elastic member is sleeved on an outer circumference of the threaded rod of the threaded joint between the step surface and the joint of the threaded joint.

5. The lens fine adjustment device according to claim 1, wherein:

The second bracket is a hollow substantially rectangular body plate member, and each of the substantially rectangular body plate members is disposed adjacent to the four apex angles and the first bracket is disposed at a position corresponding to the four apex angles The position adjustment mechanism.

The lens trimming device according to any one of claims 1 to 5, wherein: the first bracket further comprises a receiving cavity formed extending away from the second bracket, the lens partially receiving In the accommodating cavity, the shelf plate is provided with a light transmitting portion for the light beam to enter the lens.

The lens fine adjustment device according to any one of claims 1 to 5, wherein: the lens fine adjustment device further comprises a lens holder, wherein the lens is at least partially fixedly mounted in the lens holder, The lens mount includes the second bracket.

8. The lens adjustment module is characterized in that:

a first adjustment mechanism, a second adjustment mechanism, and the lens fine adjustment device according to any one of claims 1 to 6, the first bracket, the second bracket, the first adjustment mechanism, and the second adjustment The mechanism stacks the connection settings in sequence;

a first electric drive mechanism, the first electric drive mechanism and the first adjustment mechanism Connecting and driving the first adjustment mechanism to cause the second adjustment mechanism to indirectly drive the lens to move in a first direction;

a second electric drive mechanism, the second electric drive mechanism is drivingly coupled to the second adjustment mechanism and driving the second adjustment mechanism to cause the second adjustment mechanism to directly drive the lens edge and the first direction Moving in a second, vertical direction;

The first adjustment mechanism includes a first slider, the second adjustment mechanism includes a second slider for fixedly connecting with the lens, and the first slider and the second slider respectively comprise a third communication The hole and the fourth communication hole, the first communication hole, the second communication hole, the third communication hole and the fourth communication hole are substantially concentric and are provided for the lens to pass.

[Claim 9] The lens adjustment module according to claim 8, wherein

The first adjusting mechanism includes a pair of first sliding bars fixed on the second bracket and inserted through the first slider in parallel in the second direction, and the second adjusting mechanism is fixed on the second adjusting mechanism a pair of second sliders disposed on the first slider and interposed in the second slider in parallel in the first direction, the first slider and the second slider being respectively in the The first slide bar and the second slide bar are guided to move downward, and the first slider is provided with a pair of first sliding sleeves respectively sleeved on the outer circumference of the first slide bar, The second slider is provided with a pair of second sliding sleeves respectively sleeved on the outer circumference of the second sliding rod, the first electric driving mechanism comprises a first motor and a first screw that are drivingly connected, and the second electric driving mechanism A second motor and a second screw including a transmission connection, the first screw and the second screw being screwed to the second bracket and the second slider, respectively.

[Claim 10] 10. A projection apparatus, comprising: a lens and an optical machine, characterized in that:

The projection device further includes the lens adjustment module according to claim 8 or 9, wherein the lens is fixedly connected to the second slider, and the first bracket is respectively associated with the second bracket and the optical machine Connected, and the first bracket is provided with a light transmitting portion for transmitting a light beam generated by the optical machine and incident on the lens.