CN108073019B

CN108073019B - Lens fine adjustment device, lens adjustment module and projection equipment

Info

Publication number: CN108073019B
Application number: CN201611006369.9A
Authority: CN
Inventors: 于广军; 黄思尧; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2016-11-15
Filing date: 2016-11-15
Publication date: 2023-08-11
Anticipated expiration: 2036-11-15
Also published as: CN108073019A; WO2018090842A1

Abstract

The invention provides a lens fine-tuning device, a lens adjusting module and projection equipment, wherein the lens fine-tuning device comprises a first bracket and a second bracket which are connected in an adjustable and movable way, the lens fine-tuning device further comprises a plurality of position adjusting mechanisms for adjusting the relative positions of the first bracket and the second bracket, each position adjusting mechanism is connected with a component and an adjusting component, the first bracket and the second bracket are connected in a movable way through the connecting component, and the adjusting component applies acting force for enabling one of the first bracket and the second bracket to move relative to the other. The invention can obtain abundant adjustment freedom degree for adjusting the position of the lens, and has high adjustment precision and quick adjustment mode.

Description

Lens fine adjustment device, lens adjustment module and projection equipment

Technical Field

The present invention relates to the field of optical technology, and more particularly, to a lens trimming device, a lens trimming module, and a projection apparatus.

Background

In conventional projection devices, the lens is often fixed and the user can only adjust the position of the projected image by adjusting the relative position or angle of the projection device to the screen. Therefore, in order to project a suitable image in the screen, the user has to spend a considerable amount of time and effort positioning the projection device to adjust the projection to the appropriate position or angle in the screen. In addition, when the lens is not at the optimal position for receiving the light beam from the light source, the lens cannot be adjusted to improve the condition of receiving the light beam by adjusting the position of the lens, so that the definition of the image projected onto the screen by the lens is adversely affected.

In order to solve the above-mentioned problems, there is a projection apparatus configured to adjust the position of a lens as a projection lens by using a lens adjustment structure including a horizontal slider and a vertical slider, the movement of which is realized by using a manual mechanical driving mechanism, the horizontal slider and the vertical slider being capable of adjusting the position of the lens only in the horizontal and vertical directions, respectively, and the degree of freedom of adjustment is small, and in particular, the position adjustment of the lens in the direction perpendicular to the horizontal or vertical direction is impossible; the mechanical driving mechanism occupies large space and has large noise, is limited by the minimum stroke, and cannot be adjusted relatively slightly, so that the accuracy of adjusting the lens position is not high, and in addition, the adjusting mode is not quick and simple.

Therefore, in order to overcome the shortcomings of the prior art, it is needed to provide a lens fine adjustment device capable of adjusting the position of the lens relatively slightly, a lens adjustment module and a projection device with high adjustment accuracy, a fast adjustment mode, a compact structure and low noise.

Disclosure of Invention

In view of this, the present invention provides a lens trimming device, a lens adjusting module with the lens trimming device, and a projection apparatus, so as to solve the technical problems of less adjustment degrees of freedom, low adjustment precision, and not fast adjustment modes of the existing lens adjusting structure.

In order to achieve the above object, the present invention provides the following technical solutions: a lens fine-tuning device comprises a first bracket and a second bracket, wherein the first bracket and the second bracket are in adjustable movable connection, the first bracket or the second bracket is used for being relatively fixedly connected with a lens, and in the transmission direction of a light beam received by the lens, the second bracket is closer to a light-emitting lens of the lens than the first bracket, and the first bracket and the second bracket are respectively provided with a first communication hole and a second communication hole for the light beam or the lens to pass through. The lens fine adjustment device further comprises a plurality of position adjustment mechanisms for adjusting the relative positions of the first bracket and the second bracket, wherein the first bracket and the second bracket are movably connected by the connecting component, and the adjusting component applies a force for enabling one of the first bracket and the second bracket to move relative to the other.

Further, the coupling assembling includes threaded connection spare, elastic component, link up the first connecting hole of one of first support and second support and set up the third connecting hole on the two other of first support and second support, the adjusting component includes the screw thread regulating part, link up with the first connecting hole and link up the second connecting hole of one of the same first support and second support and link up with the third connecting hole and link up the butt portion of one of the same first support and second support, first connecting hole and third connecting hole set up in pairs, the second connecting hole with the butt portion sets up relatively, the first connecting hole includes the via hole, be equipped with the screw hole in the third connecting hole, the threaded rod of threaded connection spare be equipped with be used for with the external screw thread that the screw hole is connected, the threaded rod passes the via hole, wherein, the elastic component sets up between the connector of threaded connection spare with first support or the second support or with the third connecting hole link up between first support, the elastic component is by elastic deformation in order to exert to the first support is close to first support or second support is with the second support is close to the second support joint, the screw thread regulating part is with the screw thread is close to the first support is with the screw thread regulating part is with the screw thread is adjusted in the joint.

Still further, the elastic component is established to the periphery cover of the threaded rod of the threaded connection spare between the connector of threaded connection spare and first support or second support, and the butt portion is including setting up the fourth connecting hole on first support or second support, and fourth connecting hole and second connecting hole set up in pairs, are provided with the butt piece in the fourth connecting hole, and the free end pair of threaded adjustment spare is with the butt piece butt.

Still further, the first connecting hole is a stepped hole comprising a via hole, a counter bore facing away from the first bracket or the second bracket and a stepped surface positioned between the via hole and the counter bore, and an elastic piece is sleeved on the periphery of a threaded rod of the threaded connecting piece positioned between the stepped surface and a connector of the threaded connecting piece.

Further, the second bracket is a hollow approximately rectangular plate, and a position adjusting mechanism is respectively arranged at the position of the approximately rectangular plate close to the four vertex angles and the position of the first bracket corresponding to the four vertex angles.

Still further, the first bracket further comprises a containing cavity formed by extending towards the direction far away from the second bracket, the lens is partially contained in the containing cavity, and the frame plate is provided with a light-transmitting part for light beams to enter the lens.

Still further, the lens fine tuning device further comprises a lens fixing frame, the lens is at least partially fixedly installed in the lens fixing frame, and the lens fixing frame comprises a second bracket.

In order to achieve the above another objective, the present invention provides a lens adjusting module, which includes a first adjusting mechanism, a second adjusting mechanism, and the lens fine adjusting device, wherein the first bracket, the second bracket, the first adjusting mechanism, and the second adjusting mechanism are sequentially stacked and connected. The lens adjusting module further comprises a first electric driving mechanism and a second electric driving mechanism, wherein the first electric driving mechanism is in transmission connection with the first adjusting mechanism and drives the first adjusting mechanism to enable the second adjusting mechanism to indirectly drive the lens to move along a first direction, and the second electric driving mechanism is in transmission connection with the second adjusting mechanism and drives the second adjusting mechanism to enable the second adjusting mechanism to directly drive the lens to move along a second direction perpendicular to the first direction. The first adjusting mechanism comprises a first sliding block, the second adjusting mechanism comprises a second sliding block fixedly connected with the lens, the first sliding block and the second sliding block respectively comprise a third communication hole and a fourth communication hole, and the first communication hole, the second communication hole, the third communication hole and the fourth communication hole are approximately concentric and are all used for the lens to pass through.

Further, the first adjusting mechanism comprises a pair of first sliding rods which are fixed on the second bracket and are inserted into the first sliding blocks in parallel along the second direction, and the second adjusting mechanism comprises a pair of second sliding rods which are fixed on the first sliding blocks and are inserted into the second sliding blocks in parallel along the first direction. The first sliding block and the second sliding block respectively move under the guidance of the first sliding rod and the second sliding rod, a pair of first sliding sleeves respectively sleeved on the periphery of the first sliding rod are arranged on the first sliding block, a pair of second sliding sleeves respectively sleeved on the periphery of the second sliding rod are arranged on the second sliding block, the first electric driving mechanism comprises a first motor and a first screw rod which are in transmission connection, the second electric driving mechanism comprises a second motor and a second screw rod which are in transmission connection, and the first screw rod and the second screw rod are respectively in threaded transmission connection with the second bracket and the second sliding rod.

In order to achieve the above object, the present invention provides a projection apparatus, which includes a lens, an optical engine, and the lens adjusting module, wherein the lens is fixedly connected with the second slider, the first bracket is respectively connected with the second bracket and the optical engine, and a light transmitting portion for transmitting and injecting a light beam generated by the optical engine into the lens is disposed on a frame plate of the first bracket far away from the second bracket.

Compared with the prior art, the technical scheme provided by the invention has the following advantages:

on the one hand, the relative positions of the first bracket and the second bracket are adjusted through the lens fine adjustment device, so that the positions of lenses which are relatively and fixedly connected with the first bracket or the second bracket can be adjusted, in addition, a plurality of position adjustment mechanisms are selectively operated, a sufficient degree of freedom of adjustment can be obtained, and in addition, the relative positions of the first bracket and the second bracket are adjusted through the adjustment assembly, so that the adjustment precision is high, and the adjustment mode is quick.

On the other hand, the lens adjusting module adopts the base mechanism, the first adjusting mechanism and the second adjusting mechanism which are arranged in a stacked mode, so that the lens adjusting module is compact in structure and small in occupied space, the first electric driving mechanism and the second electric driving mechanism respectively drive the first adjusting mechanism and the second adjusting mechanism, the first adjusting mechanism drives the second lens adjusting mechanism in the moving process, the position of the lens in the first direction is adjusted indirectly through the second lens adjusting mechanism, the position of the lens in the second direction perpendicular to the first direction is adjusted directly through the second lens adjusting mechanism, the adjustment of the position of the lens is guaranteed to be high in precision and good in stability, and the adjustment precision is further improved through the lens fine adjusting device on the basis of adjustment by utilizing each electric driving mechanism.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a lens trimming device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the lens trimming device shown in FIG. 1;

FIG. 3 is a schematic view illustrating another view direction of the lens trimming device shown in FIG. 1;

fig. 4 is a schematic structural diagram mainly illustrating a first bracket of the lens trimming device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram mainly illustrating a second bracket of the lens trimming device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an assembled lens of the lens adjustment module according to an embodiment of the present invention;

FIG. 7 is an exploded view of the lens adjusting module according to the embodiment of the present invention without assembling a lens and omitting a lens connecting frame;

FIG. 8 is a schematic diagram of a base mechanism of a lens adjusting module according to an embodiment of the present invention;

Fig. 9 is a schematic structural diagram mainly illustrating a first adjusting mechanism of a lens adjusting module according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram mainly illustrating a second adjusting mechanism of the lens adjusting module according to an embodiment of the present invention;

FIG. 11 is a schematic diagram mainly showing the assembled states 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 invention;

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

fig. 13 is a schematic structural diagram of a connection state between a lens adjusting module and a lens connecting frame according to an embodiment of the present invention;

reference numerals illustrate:

1000—a lens fine tuning device; 100—a base mechanism; 110-a second bracket, base body; 111-first protrusions; 112-a first opening; 113-first communication holes; 114-a third connecting hole; 115-fourth connecting hole; 116—an abutment block; 117-pads; 120-a first boss; 121—a threaded fixation hole; 130- -a support; 131- -slotting; 132—a sleeve; 133-cover plate;

2000- -a lens adjustment module; 200—a first adjustment mechanism; 210—a first slider; 211-a first protrusion; 212-a first through slot; 213- -a via; 214-a second protrusion; 215-a second opening; 216-a third communication hole; 220—a first slide bar; 221-notch; 222- -arc surface; 223—a crimp face; 224- -a through hole; 230-a second boss; 231-threaded fixation hole; 240—a first drive block; 250—a first sliding sleeve; 260—a first photosensor;

300-a second adjustment mechanism; 310- -a second slider; 311-a second protrusion; 312-a second through slot; 313—a second drive block; 314—rib; 314a—a limit bump; 315- -opening; 316—a plectrum; 317- -hook; 318-fourth communication hole; 320- -a second slide bar; 321- -notch; 322-arc surface; 323—a crimp surface; 324—through holes; 330- -a second sliding sleeve; 340—a second photosensor;

400-a first drive mechanism; 410-a first motor; 420—a first screw; 430—a first stator; 431- -a first sub-anchor;

500—a second drive mechanism; 510-a second motor; 520-a second screw; 530—a second stator; 531-a second sub-fixing piece;

600—a first bracket, a lens connection bracket; 610-a second communication hole; 620—a shelf; 621—a first connection hole; 621a—via; 621b—a counterbore; 621c—a stepped surface; 622-second connection holes; 623—a receiving cavity; 630- -a light transmitting portion;

700- -position adjustment mechanism; 710-threaded connectors, 720-threaded adjusters, 730-elastic members;

SF- -a threaded fastener; CT-oilless bushing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to fig. 1 to 13 and examples. It should be understood that the examples described below are only for explaining the present invention and are not intended to limit the present invention.

Lens trimming device embodiment

As an object of the present invention, a detailed description will be given below of an embodiment of a lens trimming device according to the present invention, specifically referring to fig. 1 to 3, a lens trimming device 1000 includes a first bracket 600 and a second bracket 110, where the first bracket 600 and the second bracket 110 are disposed opposite to each other and are adjustably movably connected, and for a projection apparatus equipped with the lens trimming device 1000 according to the present invention, the first bracket 600 as a lens connecting frame may be an independent component for connecting the second bracket 110 as a base body and a light machine, or may be a component of the light machine, for example, the first bracket 600 and the light machine are integrally configured. The first bracket 600 or the second bracket 110 is used for relatively fixedly connecting with the lens. As will be appreciated by those skilled in the art, the main structure of the lens generally comprises a cylindrical frame in which the lens groups are disposed, and an entrance lens is disposed on the side of the frame that receives the light beam, and an exit lens is disposed on the side of the cylinder that emits the light. In the transmission direction of the light beam received by the lens, the second bracket 110 of the lens trimming device 1000 is closer to the light-emitting lens of the lens trimming device 1000 than the first bracket 600. For the understanding of this relatively fixedly connection, the first bracket 600 or the second bracket 110 may be directly fixedly connected to the lens itself, or the first bracket 600 or the second bracket 110 may be indirectly fixedly connected to the lens through being connected to some other component. As a preferred embodiment, the first and second holders 600 and 110 have first and second communication holes 113 and 610 through which a light beam or a lens passes, respectively, specifically, in case that the lens passes through the first and second communication holes 113 and 610, an incident lens of the lens is located inside the first holder 600, in case that the light beam passes through the first and second communication holes 113 and 610, the incident lens of the lens is located outside the second holder 110 and 600, and in case that the light beam passes through the second communication hole 610, the lens passes through the first communication hole 113, the incident lens of the lens is located inside the second holder 110. In this specification, unless otherwise specified, a case where the lens passes through the first communication hole 113 and the second communication hole 610 will be described as an example. The lens fine adjustment 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 member (not labeled) and an adjustment member (not labeled), wherein the connection member movably connects the first bracket 600 and the second bracket 110, the adjustment member applies a force for moving one of the first bracket 600 and the second bracket 110 relative to the other, that is, the movable connection of the first bracket 600 and the second bracket 110 is achieved by the connection member, the relative distance between the first bracket 600 and the second bracket 110 is adjusted by the adjustment member, thereby achieving position adjustment of the lens fixed to one of the first bracket 600 and the second bracket 110, and thus, by providing the connection member, movable and reliable connection of the first bracket and the second bracket is achieved, and by providing the adjustment member, adjustment of the relative positions of the first bracket and the second bracket is achieved, and both cooperate with each other, thereby facilitating stable and accurate position adjustment of the lens fixed to one of the first bracket and the second bracket. Specifically, in the present embodiment, as a specific implementation of the connection assembly and the adjustment assembly, the connection assembly includes the screw connector 710, the elastic member 730, the first connection hole 621 penetrating the shelf plate 620 included in the first bracket 600, and the third connection hole provided on the second bracket 110, and the adjustment assembly includes the screw adjuster, the second connection hole 622 penetrating the shelf plate 620, and the abutment provided on the second bracket 110. Hereinafter, for simplicity and convenience of description, each position adjustment mechanism is collectively described as including a screw connector 710, a screw adjuster 720, an elastic member 730, first and second connection holes 621 and 622 penetrating the shelf 620 included in the first bracket 600, and a third connection hole 114 and an abutment provided on the second bracket 110, wherein the above-mentioned plurality is three or more. More specifically, the first connecting hole 621 and the third connecting hole 114 are provided in pairs, and the second connecting hole 622 and the abutting portion are provided opposite to each other, and the abutting portion may be the second bracket 110 itself, an abutting piece fixed to the second bracket 110, or an abutting piece 116 (to be described in detail later), and the second bracket 110 itself, the abutting piece, and the abutting piece 116 are preferably made of a wear-resistant material such as cast iron, stainless steel, or the like. The first connection hole 621 includes a via hole 621A, and the via hole 621A is preferably a light hole, and the entire first connection hole 621 is 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 concrete implementation of the threaded hole provided by the third connecting hole 114, the inner peripheral wall of the third connecting hole 114 may be directly provided with threads, or a hollow hole sleeve with internal threads arranged on the inner peripheral wall is arranged in the third connecting hole 114, the external threads on the outer peripheral wall of the hollow hole sleeve are connected with the internal threads of the third connecting hole 114, and the hollow part of the hollow hole sleeve is provided with a threaded hole, so that the threaded hole of the hollow part is the threaded hole provided by the third connecting hole 114, and the hollow hole sleeve is preferably made of wear-resistant materials such as stainless steel, cast iron and the like, for example, a steel wire tooth sleeve made of stainless steel, thereby improving the wear resistance and connection reliability of the threaded hole. The threaded connector 710 includes a threaded rod provided with external threads for threaded connection with a threaded hole, and a connector, 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 can be integrally provided with external threads or the part, close to the connector, of the free end, which is provided with the external threads for being connected with the threaded hole is provided with the 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 apply a pretightening force to the first bracket 600 close to the second bracket 110, for example, in the case where the elastic member is disposed between the connector of the screw connector and the first bracket, it may be that an elastic member such as a spring is entirely compressively sleeved on an outer circumference of a threaded rod of the screw connector disposed between the connector of the screw connector and the first bracket (an embodiment adopted as the present embodiment will be described in further detail below), or a plurality of tension springs may be stretched and circumferentially disposed on an outer circumference of the threaded rod disposed between the connector and the first bracket. In the case where the elastic member is provided between the first bracket and the second bracket, a plurality of tension springs in a state of being stretched and deformed may be arranged between the opposite surfaces of the first bracket and the second bracket or on both side surfaces of the first bracket and the second bracket, and the tension springs are preferably provided adjacent to the respective screw-threaded connectors and in one-to-one correspondence. In this embodiment, an elastic member 730 is disposed between the connector of the threaded connector 710 and the first bracket 600, and the elastic member 730 is sleeved on the outer periphery of the threaded rod of the threaded connector 710, and it is known that the outer diameter of the connector is larger than the outer diameter of the threaded rod, and the elastic member 730 is pressed and compressed by the connector to apply a pretightening force to the first bracket 600 close to the second bracket 110. The elastic member 730 is preferably a spring, and has advantages of being capable of flexibly generating corresponding elastic deformation due to different forces, large elastic deformation amount, low cost, and the like, and may be cylindrical elastic silica gel, elastic rubber, and the like, and the elastic member 730 is made of a material capable of generating large elastic deformation amount for the elastic silica gel and the elastic rubber. The second connection hole 622 is a threaded hole, the screw adjusting member 720 is in threaded connection with the second connection hole 622, and the free end of the screw adjusting member 720 abuts against the abutting portion, and the screw adjusting member 720 and the elastic member 730 cooperate to adjust the relative distance between the first bracket 600 and the second bracket 110, that is, the resultant force of the forces applied to the first bracket 600 and the second bracket 110 by the screw adjusting member 720 and the elastic member 730 is used to achieve the adjustment. Incidentally, when the first bracket 600 and the second bracket 110 are in contact, the distance therebetween is 0. The threaded connection 710 and the threaded adjustment member 720 may specifically be studs, screws, etc., and in this embodiment, the threaded connection 710 and the threaded adjustment member 720 are studs. It will be appreciated that the connection of the first bracket 600 and the second bracket 110 is achieved by the threaded connection of the threaded rod of the threaded connection 710 with the threaded hole of the third connection hole 114, and the relative distance between the first bracket 600 and the second bracket 110 is changed while the threaded rod of the threaded connection 710 and the through hole 621A are relatively displaced by the combined action of the threaded adjustment member 720 and the elastic member 730, so that the movable adjustment of the relative positions of the first bracket 600 and the second bracket 110 is achieved. In more detail, in the case that the free end of the screw adjuster 720 abuts against the abutting portion and the first bracket 600 and the second bracket 110 have a relative distance therebetween, when the user rotates the screw adjuster 720 to rotate the threaded rod of the screw adjuster 720 relative to the abutting portion, the screw adjuster 720 can drive the first bracket 600 to move away from the second bracket 110 against the pre-tightening force while rotating the free end of the screw adjuster 720 relative to the abutting portion, the degree of compression of the elastic member 730 is further increased, so that the relative distance between the first bracket 600 and the second bracket 110 is increased, and as a result, when the user rotates the screw adjuster 720 in the opposite direction to reduce the length of the threaded rod of the screw adjuster 720 screwed into the second connecting hole 622, the free end of the screw adjuster 720 is rotated relative to the abutting portion, the displacement of the first bracket 600 approaching the second bracket 110 is generated under the pre-tightening force exerted by the elastic member, and the degree of compression of the elastic member 730 is correspondingly reduced, so that the relative distance between the first bracket 600 and the second bracket 110 is reduced, and thus the position of the first bracket 600 relative to the second bracket 600 is optimally adjusted, for example, and the position of the first bracket 600 is optimally receives the first light beam. Also, since a plurality of position adjustment mechanisms 700 are provided, one or more than one of the screw adjustment members 720 in the position adjustment mechanism 700 can be flexibly selected for adjustment, so that a sufficient degree of freedom of lens adjustment can be obtained.

With reference to the above description, as an alternative embodiment, it is basically the same as the structure of the above-described lens fine adjustment device, except that the first connecting hole and the second connecting hole are provided to penetrate the second bracket, the third connecting hole is provided on the first bracket, the abutment portion is provided on the first bracket and is provided opposite to the second connecting hole, that is, in an alternative embodiment, the screw adjuster adjusts the movement of the second bracket relative to the first bracket, further, the abutment portion further includes fourth connecting holes provided on the first bracket, the fourth connecting holes and the second connecting holes are provided in pairs, and the abutment block is provided in each fourth connecting hole, and the free end pair of the screw adjuster abuts against the abutment block. In addition, the first connecting hole penetrating the second bracket is a stepped hole comprising a through hole, a counter bore opposite to the first bracket and a stepped surface positioned between the through hole and the counter bore, and an elastic piece is sleeved on the periphery of a threaded rod of the threaded connecting piece positioned between the stepped surface and a connector of the threaded connecting piece.

According to the above description of the preferred embodiment and the alternative embodiment, the difference is mainly that in the preferred embodiment, the screw adjuster 720 is adjusted on the side facing the first bracket 600, and in the alternative embodiment, the screw adjuster is adjusted on the side opposite to the first bracket 600 and on the side facing the second bracket 110, and further details of the lens trimming device example according to the present invention will be described below, and reference will be made to other lens trimming device examples according to the alternative embodiment, which will not be repeated herein.

Referring to fig. 2 and 5 in combination, in the present embodiment, preferably, the elastic member 730 is sleeved on the outer circumference of the threaded rod of the threaded connection member between the connector of the threaded connection member 710 and the first bracket 600, the abutting portion includes fourth connection holes 115 provided on the second bracket 110, the fourth connection holes 115 and the second connection holes 622 are provided in pairs, an abutting block 116 is provided in each of the fourth connection holes 115, and the free end of the threaded adjustment member 720 abuts against the abutting block 116. By so doing, since the abutting block 116 has excellent wear resistance, sufficient assurance is provided for the free end of the screw adjuster 720 to be well abutted against the abutting block 116 and well rotated relative to the abutting block 116, and the abutting block 116 is fixed in the fourth connecting hole 115 so as not to be easily displaced or fallen off, improving reliability. In addition, a spacer 117 surrounding the third and fourth connection holes 114 and 115 may be provided on the surface of the second bracket 110, and the spacer 117 may be used to assist in adjusting the relative spacing of the first and second brackets 600 and 110.

Referring to fig. 2 and 4 in combination, further, the first connecting hole 621 is a stepped hole including a through hole 621A, a counter bore 621B facing away from the second bracket 110, and a stepped surface 621C located between the through hole 621A and the counter bore 621B, and a spring as an elastic member 730 is sleeved around an outer circumference of a threaded rod of the screw connection 710 located between the stepped surface 621C and a connection head of the screw connection 710. It will be appreciated that when the first bracket 600 and the second bracket 110 have a predetermined relative spacing, the relative spacing may be further increased to increase the amount of compression by which the spring is further compressed. In addition, since the outer circumference of the counter bore 621B surrounds one free end of the elastic member 730, one free end of the elastic member 730 can be well positioned, and the contact surface of the connector and the elastic member 730 and the stepped surface 621C are preferably both planar, so that the elastic member 730 is uniformly stressed and has high stability.

As a further improvement, referring to fig. 2 to 5 in combination, the second bracket 110 is provided as a hollow substantially rectangular body plate member, and one position adjustment mechanism 700 is disposed at each of positions of the substantially rectangular body plate member adjacent to the four corners and positions of the first bracket 600 corresponding to the four corners. In accordance with the above description, more specifically, one position adjusting mechanism 700 may be understood to include the third and fourth connection holes 114 and 115 provided at positions adjacent to one top corner of the second bracket 110, the first and second connection holes 621 and 622 provided at positions of the first bracket 600 corresponding to one top corner of the second bracket 110 described above, and the screw connection 710, the screw adjustment 720, and the elastic member 730 engaged with the respective holes. In this way, since the number of the position adjusting mechanisms 700 is set to four, when the screw adjusting members 720 are simultaneously rotated in the same direction and the number of rotations is substantially the same, the first bracket 600 is moved with respect to the second bracket 110 substantially in the axial direction parallel to the screw connecting members 710, so that the movement of the lens in the axial direction can be adjusted. When the number of rotations or the direction of rotation of each screw adjusting member 720 are different or only a part of the screw adjusting members 720 are rotationally adjusted, the first bracket 600 can be moved with respect to the second bracket 110 in the axial direction parallel to each screw connecting member 710 and rotated about the line passing through the axes of two of the screw connecting members 710 or rotated about the line passing through the axes of two of the screw connecting members 710, thereby adjusting the position of the lens in a combined manner of movement and rotation or in a rotational manner, and thus, multi-azimuth adjustment of the lens position can be achieved. It should be understood that the position adjustment mechanism 700 may be provided in other numbers according to actual needs.

Referring to fig. 2 in combination, for the case where the above-mentioned 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 receiving chamber 623 extending away from the second bracket 110, for example, the first bracket 600 includes a shelf 620, the shelf 620 extends away from the second bracket 110 to form the receiving chamber 623, the lens is partially received in the receiving chamber 623, the shelf 620 is provided with a light transmitting portion 630 for transmitting a light beam into the lens, the light transmitting portion 630 includes a light transmitting lens, the light transmitting lens is sealingly fixed on the shelf 610, it is known that the light transmitting lens of the lens is located in the receiving chamber 623 and receives the light beam transmitted through the light transmitting portion 630, and the opposite side of the first bracket 600 from the second bracket 110 is generally fixedly connected with the light machine of the projection apparatus, and therefore, by fine adjusting the position of the lens by the lens fine adjustment device 1000, the lens can be positioned at an optimal position for receiving the emitted light beam, thereby obtaining excellent projection image quality.

In another embodiment, the lens fine adjustment device further comprises a lens holder (not shown), in which the lens is at least partially fixedly mounted, the lens holder comprising a second bracket 110. Preferably, the lens holder is a fixed frame having an upper portion opened and having a cavity, the fixed frame including a second bracket 110 through which most of the structure of the lens is received in the cavity, and a portion of the structure adjacent to the light incident lens of the lens is passed through a first communication hole 113 of the second bracket 110 and a second communication hole 610 of the first bracket 600. The outer circumference of the cylindrical frame of the lens is provided with a clamping table, and correspondingly, the fixed frame is provided with a clamping groove matched with the clamping table, and the lens is fixedly connected with the fixed frame through the matching of the clamping table and the clamping groove, so that when the relative position 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, and the position adjustment of the lens relative to the first bracket 600 is realized according to the description above.

Lens adjusting module embodiment

As another objective of the present invention, the following detailed description will be given of an embodiment of the lens adjustment module provided by the present invention, specifically referring to fig. 6 to 13, the lens adjustment module 2000 includes a first adjustment mechanism 200, a second adjustment mechanism 300, and the lens adjustment device in any of the embodiments of the lens adjustment device except the embodiment of the lens adjustment device with a lens fixing frame, and the structure of the lens adjustment device is not described in detail herein, and for convenience of description, the lens connection frame is used as the first bracket, the base body is used as the second bracket, and the functions of the lens connection frame and the base body are the same as those of the first bracket and the second bracket, respectively. The base body 110, the first adjustment mechanism 200, and the second adjustment mechanism 300 are sequentially stacked from the near to the far with respect to the lens link 600 in the direction of light beam transmission into the lens link 600. In other embodiments, the base mechanism, the first adjustment mechanism, and the second adjustment mechanism may be sequentially stacked in this order, or the second adjustment mechanism and the first adjustment mechanism may be sequentially stacked from the near to the far with respect to the base mechanism in a vertical direction perpendicular to a plane in which a base main body (to be described further below) included in the base mechanism, the second adjustment mechanism being provided on the first adjustment mechanism, and the second adjustment mechanism being fixedly connected to the lens. Accordingly, the sequential descriptions of the present invention are intended to illustrate 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, which are movably connected, but not to limit the specific positional relationship of the three in terms of spatial orientation. The lens adjustment module 2000 further includes a first electric driving mechanism 400 and a second electric driving mechanism 500, where the first electric driving mechanism 400 is in transmission connection with the first adjustment mechanism 200 and drives the first adjustment mechanism 200 to drive the second adjustment mechanism 300 and drive the lens JT to move along the first direction. The second electric driving mechanism 500 is in driving connection with the second adjusting mechanism 300 and drives the second adjusting mechanism 300 to enable the second adjusting mechanism 300 to drive the lens JT to move along a second direction perpendicular to the first direction, and for convenience of understanding, the first direction includes both Y-and y+ directions, and the second direction includes both X-and x+ directions, as indicated by arrows on the coordinate axes in fig. 6. The first adjustment mechanism 200 includes a first slider 210, the second adjustment mechanism 300 includes a second slider 310 fixedly connected to the lens JT, the first slider 210 and the second slider 310 include a third communication hole 216 and a fourth communication hole 318, respectively, and 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 all used for passing the lens JT. As can be further understood from the above description about the stacking connection arrangement, since the second adjustment mechanism 300 is movably connected with the first adjustment mechanism 200 in a relatively movable manner, the first electric driving mechanism 400 drives the first adjustment mechanism 200 to move along the first direction relative to the base mechanism 100 and drives the second adjustment mechanism 300 to move accordingly, so as to indirectly implement the position adjustment of the lens JT fixed on the second slider 310 in the first direction, and the second electric driving mechanism 500 drives the second adjustment mechanism 300 to move along the second direction relative to the base mechanism 100, so as to directly implement the position adjustment of the lens JT fixed on the second slider 310 in the second direction, so that the position adjustment of the lens JT in the first direction and the second direction relative to the base mechanism 100 can be implemented. Therefore, the lens adjusting module 2000 of the present embodiment has a compact structure and small occupied space, and the electric driving structure is adopted to ensure high accuracy of adjusting the lens position. Further, since the base main body 110 and the lens link 600 are movably connected with each other by providing the plurality of position adjusting mechanisms 700, the relative position between the base main body 110 and the lens link 600 can be adjusted by a manual adjustment method, and the position of the lens JT with respect to the lens link 600 can be adjusted, so that the user can adjust the lens position by selecting one or both of an electric drive method and a manual adjustment method according to actual needs, for example, in general, the lens position adjustment can be quickly realized by selecting an electric drive method, and the lens position can be more minutely adjusted by selecting a manual adjustment method. Therefore, the lens adjusting module 2000 of the present embodiment can meet different requirements of lens position adjustment, and is flexible to use.

Referring to fig. 6 to 10 in combination, as a specific implementation of the lens adjustment module of the present embodiment, two sets of first supporting portions disposed along the first direction are provided on the base body 110, the first adjustment mechanism 200 includes a first slide bar 220 inserted into the first slide bar 210 and two sets of second supporting portions disposed along the second direction on the first slide bar 210, the second adjustment mechanism 300 includes a second slide bar 320 inserted into the second slide bar 310, the first slide bar 220 is supported and fixed on the first supporting portion, the second slide bar 320 is supported and fixed on the second supporting portion, and the first slide bar 210 and the second slide bar 310 move under the guidance of the first slide bar 220 and the second slide bar 320, respectively. The lens adjusting module 2000 further includes a pair of first sliding sleeves 250 respectively sleeved on the outer periphery of the first sliding rod 220 and a pair of second sliding sleeves 330 respectively sleeved on the outer periphery of the second sliding rod 320 and arranged on the peripheral wall of the second sliding rod 310.

For example, the first supporting portion and the second supporting portion may be hole sleeves (not shown) with adjustable hole diameters of central holes and fixed on the base body and the first sliding block, preferably, the hole sleeves are integrally formed with the base body and the first sliding block, and the hole sleeves are provided with two support arms with internal threads and a spacing opening between the two support arms in the radial direction of the central holes. The first support portion and the second support portion may include, for example, a clip and a groove (not shown) that are engaged with each other, and specifically, grooves having arc surfaces are provided on the base body and the first slider, respectively, and a part of the circumferential surfaces of both ends of the first slider and the second slider are engaged with the arc surfaces of the corresponding grooves. In order to obtain the technical effect of relatively simple structure and high assembly efficiency, in the present embodiment, referring to fig. 7 to 10 in particular, the first adjustment mechanism 200 and the second adjustment mechanism 300 each include a plurality of screw fixing members SF, and the two sets of first supporting portions and the two sets of second supporting portions are respectively two pairs of first bosses 120 and two pairs of second bosses 230, and the first bosses 120 and the second bosses 230 have inverted trapezoidal surfaces or arc surfaces, in the present embodiment, inverted trapezoidal surfaces are adopted. The first slide bar 220 and the second slide bar 320 are each generally cylindrical bars comprising two free ends and a cylindrical body between the two free ends having a D-shaped cross-section, wherein the D-shaped cross-section is formed by notches 221, 321 provided at the free ends, i.e. corresponding to the D-shaped cross-section, each of the ends comprises an arc surface 222, 322 and a crimping surface 223, 323 formed by the notches 221, 321, which arc surfaces are preferably arc surfaces. Through holes 224 and 324 are arranged between the cambered surfaces 222 and 322 and the press-contact surfaces 223 and 323, the cambered surfaces 222 and 322 are abutted against inverted trapezoid surfaces of the first boss 120 and the second boss 230, for example, each threaded fixing part SF such as a screw passes through the cambered surfaces 222 and 322 through the through holes 224 and 324 to be connected with the threaded fixing holes 121 and 231 such as internal threaded holes on the first boss 120 and the second boss 230, respectively, and the screw heads of each screw are abutted against the press-contact surfaces 223 and 323, so that the first slide bar 220 and the second slide bar 320 are reliably supported and fixed by the first boss 120 and the second boss 230.

As described in more detail below with reference to fig. 7, 11 and 12, the first electric driving mechanism 400 of the lens adjusting module 2000 includes a first motor 410 and a first screw 420 which are drivingly connected, for example, by a coupling, and the second electric driving mechanism 500 includes a second motor 510 and a second screw 520 which are drivingly connected, for example, by a coupling, and the first screw 420 and the second screw 520 are drivingly connected with the first slider 210 and the second slider 310, respectively, i.e., threaded portions of the first screw 420 and the second screw 520 are engaged with threaded portions of the first slider 210 and the second slider 310, which may be directly formed on own blocks of the first slider 210 and the second slider 310 or on transmission members fixed to the first slider 210 and the second slider 310, respectively. The first screw 420 and the second screw 520 are rotated by the first motor 410 and the second motor 510, respectively, and the first slider 210 and the second slider 310 are moved in the axial direction of each corresponding screw by the screw driving connection. 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 fixing piece 430 and the second fixing piece 530, respectively, specifically, the first fixing piece 430 and the second fixing piece 530, which are substantially L-shaped, each include two first sub-fixing pieces 431 and two second sub-fixing pieces 531 disposed substantially at right angles, the two first sub-fixing pieces 431 are respectively opened with a pair of screw holes corresponding to the base body 110 and the first motor 410, the two second sub-fixing pieces 531 are respectively opened with a pair of screw holes corresponding to the boss and the second motor 510, and the respective pair of screw holes are respectively screw-connected with screws, for example, as the screw fixtures SF. As described above, the first motor 410 and the second motor 510 are fixed by the L-shaped first fixing piece 430 and the L-shaped second fixing piece 530, so that the first motor 410 and the second motor 510 are indirectly connected with respect to the base main body 110 and the first slider 210 in a non-direct contact manner, and unavoidable vibration generated when the first motor 410 and the second motor 510 operate can be buffered, thereby avoiding the adverse condition that the base main body 110 and the first slider 210 are affected by vibration to generate larger vibration or even generate unexpected position change of the lens JT caused by displacement.

Referring to fig. 7 and 8 in combination, in order to firmly fix the first screw 420, as a further improvement, the base mechanism 100 further includes a pair of rod fixing members for fixing both ends of the first screw 420, each of the rod fixing members including a support 130 provided on the base body 110 and a cover plate 133 fixedly coupled to the support 130, the support 130 having a slot 131 for receiving the shaft sleeve 132, opposite ends of the first screw 420 being respectively inserted into the shaft sleeve 132, and a pair of screw holes being correspondingly provided on the cover plate 133 and the support 130 through screw coupling, thereby fixedly coupling the cover plate 133 with the support 130, and the cover plate 133 fixing the shaft sleeve 132 in the slot 131.

Referring to fig. 7 to 9 in combination, the first slider 210 of the lens adjustment module 2000 further includes a first protrusion 211, the first protrusion 211 includes a first through slot 212 extending from a first side surface of the first slider 210 in sequence away from the first communication hole 113 and in a direction parallel to the second direction for the first screw 420 to pass through, preferably, a boss for fixedly connecting with the second fixing piece 530 may be further provided at a free end of the first protrusion 211, and a first transmission block 240 in threaded connection with the first screw 420 is fixed in the first through slot 212, for example, the first transmission block and the first protrusion are correspondingly provided with threaded holes, and each threaded hole is connected by a screw member such as a screw to fix the first transmission block in the first through slot to ensure reliable transmission thereof. The first driving block 240 may be a cylindrical body with an internally threaded hole, for example, the first driving block 240 is a movable nut. The threaded connection of the first driving block 240 and the first screw 420 may be understood as a fit of the internal thread and the external thread, and during the rotation of the first screw 420, the internal thread of the first driving block 240 may be moved in the first direction by the force of the external thread of the first screw 420, so that one of a pair of first groove surfaces of the first driving block 240 opposite to the first through groove 212 in the first direction may abut against and drive the first protrusion 211 to move by applying a force to one of the first groove surfaces, and it is known that the first driving block 240 functions as the driving member. 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 first groove surface, the first slider 210 moves smoothly, and the movement distance of the first transmission block 240 and thus the first slider 210 can be precisely controlled by controlling the rotation angle of the first screw 420.

Referring to fig. 7 to 10, as one embodiment in which the first slider 220 and the second slider 320 are inserted through the first slider 210 and the second slider 310, respectively, a pair of second sliders 330 having first guide holes are provided on a second side of the first slider 210 opposite to the first side, the first sliders 250 are coupled to the outer circumference of the first slider 220, the first protrusions 211 further include through holes 213 between the third communication holes 216 and the first through grooves 212 through which the first slider 220 passes, and two pairs of second sliders 330 having second guide holes are provided on the circumferential wall of the second slider 310, the second sliders 330 being coupled to the outer circumference of the second slider 320. It can be appreciated that the through hole 213 functions as the first sliding sleeve 250, so that the first sliding block 210 can move parallel to the first direction under the guidance of one first sliding rod 220 through the first sliding sleeve 250 and the through hole 213, and the second sliding block 310 can move parallel to the second direction under the guidance of one second sliding rod 320 through two pairs of second sliding sleeves 330, so that the friction resistance in the moving process of the sliding sleeve or the through hole relative to the sliding rod can be reduced to a great extent through the cooperation of the corresponding sliding sleeve and the sliding rod, the through hole and the sliding rod, and the movement of the first sliding block 210 and the second sliding block 310 can be ensured to have excellent stability. In addition, in other embodiments, in order to further reduce the friction 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 slider 210 and the second slider 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, not only is the first slide bar 220 and the first screw rod respectively guided and driven to the first slide block 210 realized, but also the axes of the first slide bar 220 and the first screw rod 420 are ensured to have high parallelism, so that the movement of the first slide block 210 is smooth and accurate, and the compactness of the overall structure of the lens adjusting module is facilitated.

Preferably, the projection of the first slide bar 220 and the second slide bar 320 on the base body 110 substantially encloses a square, which may be rectangular or square. The base body 110 and the first slider 210 are substantially rectangular body plates having the first communication hole 113 and the third communication hole 216, respectively, and the second slider 310 is a substantially cylindrical body plate having the fourth communication hole 318. By setting the base body 110 and the first slider 210 to be substantially rectangular body plates and substantially cylindrical plates, the stacking arrangement of the two can be facilitated, and the substantially cylindrical plates can be better adapted to the lens JT through the second slider 310, which together plays a role in reducing the space occupied by the lens adjustment module.

Referring to fig. 8 to 10 in combination, in order to more accurately control the movement of the first slider 210 and the first slider 210, it is preferable that the first opening 112 and the first photosensor 260 are respectively provided on the base body 110 and the first slider 210, and the second opening 215 and the second photosensor 340 are respectively provided on the first slider 210 and the second slider 310, and it is known that the positions of the respective openings and the photosensors may be correspondingly reversed. The first opening 112 extends along the first direction, the second opening 215 extends along the second direction, preferably, the extending distance of the first opening 112 in the first direction is set to be equal to the preset moving distance of the first slider 210 in the first direction, the extending distance of the second opening 215 in the first direction is set to be equal to the preset moving distance of the second slider 310 in the second direction, each photoelectric sensor comprises a light emitting part and a light receiving part, each opening allows the detection light emitted by the light emitting part matched with the photoelectric sensor to pass through and be received by the light receiving part, specifically, the lens adjusting module comprises a controller or a projection device assembled with the lens adjusting module comprises a controller, each photoelectric sensor and each electric driving mechanism are respectively and electrically connected with the controller, when the first slider 210 or/and the second slider 310 move and in the moving process, if the corresponding light receiving part of the corresponding photoelectric sensor can receive the detection light, the controller judges that each slider is located in the preset moving distance, the controller allows the motor comprised by each electric driving mechanism to pass through and be received by the light receiving part, specifically, the lens adjusting module comprises a controller or a projection device assembled with the lens adjusting module comprises a controller, and when the first slider 210 or the corresponding optical sensor and the second slider 310 can not move, and the corresponding optical sensor can not move, and the first slider and the second slider 310 can not move accurately move. In addition, it is preferable that the controller controls the corresponding motor to drive the certain bracket to move within the preset moving distance thereof, such as a half of the preset moving distance thereof, if the certain bracket is unexpectedly located outside the preset moving distance, so as to maintain the normal operation of the certain bracket.

Further, the first opening 112 is disposed on the first protrusion 111 on one side of the base body 110, the second opening 215 is disposed on the second protrusion 214 of the first sliding sleeve 250, the first photoelectric sensor 260 is fixed on the third side of the first sliding block 210, and the second photoelectric sensor 340 is fixed on the outer periphery of the second sliding block 310.

Referring to fig. 7, 11 and 12 in combination, as an alternative embodiment, the second slider 310 includes, for example, a second protrusion 311 extending away from the outer periphery thereof, a second through slot 312 through which the second screw 520 passes is provided in the second protrusion 311, and a second driving block 313 screwed with the second screw 520 is fixed in the second through slot 312, for example, the second driving block and the second protrusion are correspondingly provided with threaded holes, and each threaded hole is connected by a screw member such as a screw to fix the second driving block in the second through slot to ensure reliable driving thereof. The second transmission block 313 may 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 may be understood as the engagement of the internal thread with the external thread, and during the rotation of the second screw 520, the internal thread of the second transmission block 313 may be moved in the second direction by the force of the external thread of the second screw, so that one of a pair of second groove surfaces of the second transmission block 313 opposite to the second through groove 312 in the second direction may abut and drive the movement of the second protrusion 311 by applying a force to one of the second groove surfaces, and it is known that the second transmission block 313 functions as the above-mentioned transmission member. Therefore, since the second transmission block 313 is provided on the second slider 310, the second transmission block 313 is in surface contact with the second groove surface, so that the second slider 310 can be smoothly moved by uniformly applying force to the second groove surface by the second transmission block 313, and the movement distance of the second transmission block 313 can be precisely controlled by controlling the rotation angle of the second screw 520, and the second slider 310 can be precisely moved by the movement of the second transmission block 313.

Referring to fig. 6 and 10 in combination, in order to achieve good fixing of the second slider 310 and the lens JT, it is preferable that a plurality of ribs 314 are provided on the second slider 310 at equal intervals along the circumferential direction of the fourth communication hole 318, openings 315 are provided between every two adjacent ribs 314, each opening 315 is provided between every two adjacent ribs 314 at equal intervals in the circumferential direction, and a plurality of protrusions (not shown) provided on the outer periphery of the frame of the lens JT pass through and rotate by a certain angle through the openings 315, so that the plurality of ribs 314 and the protrusions overlap each other and are in snap connection, and thus the lens JT can be prevented from being separated from the second slider 310 by interference fit of the ribs 314 and the protrusions in one-to-one correspondence. When the lens JT needs to be separated from the second slider 310, the protrusions may be rotated in opposite directions so that the protrusions are completely staggered from the ribs 314 and face the openings 315, which is known as the above-mentioned rotation of the protrusions of the lens JT may be achieved by manually rotating the integral frame of the lens JT. Therefore, when the first slider 210 moves in the first direction, the first slider 210 drives the second slider 310 to move through the first slide bar 220 during the movement, and the second slider 310 applies a force to each protrusion through each rib 314 to drive the lens JT to move in the first direction, and when the second slider 310 moves in the second direction, the second slider 310 applies a force to each protrusion through each rib 314 to drive the lens JT to move in the second direction.

Further referring to fig. 12 in combination, in order to better realize the fixed connection between the second slider 310 and the lens JT, further, a limiting bump 314A is disposed on a surface of one of the ribs 314 facing the first slider 210, the limiting bump 314A approaches to the adjacent openings 315 in the rotation directions of the plurality of protrusions, and the limiting bump 314A abuts against an end surface of one of the protrusions. Through the abutment of the limiting bump 314A of the first slider 210 and the convex end surface of the lens JT, whether each protrusion of the lens JT rotates in place after passing through each opening 315 can be indicated, so that the overlarge or undersize rotation angle of the protrusion of the lens JT is avoided, and the plurality of rib plates 314 and the plurality of protrusions are ensured to be clamped with each other well.

In order to better fixedly connect the second slider 310 with the lens JT, further, a fastening mechanism is provided on the second slider 310, the fastening mechanism includes a pulling piece 316 and a hook 317, the hook 317 is used for being fastened with a fastening slot provided on the lens, a bayonet is provided on a surface of one of the rib plates 314 facing away from the first slider 210, the pulling piece 316 is connected with a torsion spring and can elastically reset to drive the hook 317 into or out of the bayonet to realize fastening or unlocking of the hook 317 with the fastening slot, therefore, in the fastening state, the lens JT is fastened and fixed with the second slider 310, and only in the unlocking state, each protrusion of the lens JT can be rotated to face the plurality of openings 315 and be further pulled away from the second slider 310.

Projection device embodiments

As still another object of the present invention, referring to fig. 6 and 13 in combination, the present invention further provides a projection apparatus, which includes a lens JT, a light machine, and a lens adjustment module in any of the lens adjustment module embodiments, wherein the lens JT is fixedly connected to the second slider 310, the lens connecting frame 600 is respectively connected to the base body 110 and the light machine, and a light transmitting portion 630 for transmitting and injecting a light beam emitted from the light machine into the lens JT is provided on a frame plate 620 of the lens connecting frame 600 remote from the base body 110. It should be noted that the lens connecting frame may be an independent component for connecting the base body and the optical engine, or may be a component included in the optical engine, for example, the lens connecting frame and the optical engine are in an integral structure. Therefore, the light beam generated by the light source and the optical lens group in the projection device through the light transmission part 630 is injected into the lens JT, and the lens position is adjusted through the functions of the lens fine adjustment device, the first adjustment mechanism and the second adjustment mechanism of the lens adjustment module, so that the lens JT is at the optimal position for receiving the light beam injected by the light transmission part 630, and the projection image projected by the lens JT is ensured to achieve good quality.

The foregoing is a further detailed description of the invention in connection with specific embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the invention. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

In the present invention, the lens trimming device is not limited to be applied to the lens trimming module, but can be applied to various occasions where the lens trimming device alone can adjust the lens position unless explicitly stated and defined otherwise. The term "fine adjustment" in the "lens fine adjustment device" is merely for explaining that the degree of change of the lens position is smaller than that of the first and second electric driving mechanisms provided in the lens adjustment module, but is not limited to a specific degree, and the term "substantially" is intended to be an outline description of the shape, angle, position, number, etc., not requiring precise limitation. The terms "coupled," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally formed, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The term "adjustment" is used to emphasize a change in lens position, and the term "adjustment" is used to emphasize a technical measure employed for a change in lens position, but the two should not be split or distinguished from each other, but should be combined with each other to understand the inventive concept of the present invention. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a technical feature defining "first", "second", etc. may include one or more such feature, either explicitly or implicitly. In addition, the "first direction" and the "second direction" described and shown in the drawings are respectively illustrated as horizontal and vertical directions, but the first direction and the second direction may be other directions according to the actual working condition of the lens adjustment module. Therefore, it will be understood by those skilled in the art that the specific meaning of the above terms in the present invention may be understood according to the specific circumstances.

The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures made by the present invention and the accompanying drawings or directly or indirectly applied to other related technical fields, such as the positional adjustment of the camera lens, the positional adjustment of the microscope lens, etc., are considered to be included in the scope of the present invention.

Claims

1. Lens micromatic setting, its characterized in that: comprising the following steps:

the first support and the second support are in adjustable movable connection, the first support or the second support is used for being fixedly connected with the lens relatively, and in the transmission direction of the light beam received by the lens, the second support is closer to the light-emitting lens of the lens than the first support, and the first support and the second support are respectively provided with a first communication hole and a second communication hole for the light beam or the lens to pass through;

a plurality of position adjustment mechanisms for adjusting the relative positions of the first and second brackets, each of the position adjustment mechanisms including a connecting assembly movably connecting the first and second brackets and an adjustment assembly exerting a force that moves one of the first and second brackets relative to the other,

The adjusting component comprises a threaded adjusting piece, a second connecting hole penetrating through one of the first bracket and the second bracket and an abutting part arranged on the other of the first bracket and the second bracket, the second connecting hole and the abutting part are oppositely arranged, the second connecting hole is a threaded hole, the threaded adjusting piece is in threaded connection with the second connecting hole, the free end of the threaded adjusting piece is abutted with the abutting part,

the abutting part comprises a fourth connecting hole arranged on the first bracket or the second bracket, the fourth connecting hole and the second connecting hole are arranged in pairs, an abutting block is arranged in the fourth connecting hole, and the free end of the threaded adjusting piece abuts against the abutting block.

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

the connecting assembly comprises a threaded connecting piece, an elastic piece, a first connecting hole and a third connecting hole, wherein the first connecting hole and the second connecting hole penetrate through one of the first bracket and the second bracket, the third connecting hole and the abutting part are arranged on the other of the first bracket and the second bracket, the first connecting hole comprises a through hole, a threaded hole is formed in the third connecting hole, an external thread used for being connected with the threaded hole is formed in a threaded rod of the threaded connecting piece, the threaded rod penetrates through the through hole, the elastic piece is arranged between a connector of the threaded connecting piece and the first bracket or the second bracket or between the first bracket and the second bracket, the elastic piece is elastically deformed to apply pretightening force to the first bracket close to the second bracket or to the second bracket close to the first bracket, and the threaded adjusting piece and the elastic piece jointly act to adjust the relative distance between the first bracket and the second bracket.

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

and the elastic piece is sleeved on the periphery of a threaded rod of the threaded connecting piece between the connector of the threaded connecting piece and the first bracket or the second bracket.

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

the first connecting hole is a stepped hole comprising the through hole, a counter bore opposite to the first bracket or the second bracket and a stepped surface positioned between the through hole and the counter bore, and the elastic piece is sleeved on the periphery of a threaded rod of the threaded connecting piece positioned between the stepped surface and a connector of the threaded connecting piece.

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

the second support is a hollow approximately rectangular plate, and the position adjusting mechanisms are respectively arranged at the positions of the approximately rectangular plate close to the four vertex angles and the positions of the first support corresponding to the four vertex angles.

6. The lens fine adjustment device according to any one of claims 1 to 5, characterized in that:

the first bracket further comprises a bracket plate and a containing cavity formed by extending towards the direction far away from the second bracket, the lens is partially contained in the containing cavity, and a light-transmitting part for light beams to enter the lens is arranged on the bracket plate.

7. The lens fine adjustment device according to any one of claims 1 to 5, characterized in that:

the lens fine adjustment device further comprises a lens fixing frame, the lens is at least partially fixedly installed in the lens fixing frame, and the lens fixing frame comprises the second bracket.

8. The lens adjustment module, its characterized in that includes:

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 mechanism being disposed in a stacked connection in this order;

the first electric driving mechanism is in transmission connection with the first adjusting mechanism and drives the first adjusting mechanism so that the second adjusting mechanism indirectly drives the lens to move along a first direction;

the second electric driving mechanism is in transmission connection with the second adjusting mechanism and drives the second adjusting mechanism so that the second adjusting mechanism directly drives the lens to move along a second direction perpendicular to the first direction;

the first adjusting mechanism comprises a first sliding block, the second adjusting mechanism comprises a second sliding block fixedly connected with the lens, the first sliding block and the second sliding block respectively comprise a third communication hole and a fourth communication hole, and the first communication hole, the second communication hole, the third communication hole and the fourth communication hole are approximately concentric and are used for the lens to pass through.

9. The lens adjustment module of claim 8, wherein,

the first adjusting mechanism comprises a pair of first sliding rods which are fixed on the second support and are inserted into the first sliding rods in parallel along the second direction, the second adjusting mechanism comprises a pair of second sliding rods which are fixed on the first sliding rods and are inserted into the second sliding rods in parallel along the first direction, the first sliding rods and the second sliding rods respectively move under the guidance of the first sliding rods and the second sliding rods, a pair of first sliding sleeves which are respectively sleeved on the peripheries of the first sliding rods are arranged on the first sliding rods, a pair of second sliding sleeves which are respectively sleeved on the peripheries of the second sliding rods are arranged on the second sliding rods, the first electric driving mechanism comprises a first motor and a first screw rod which are in transmission connection, and the second electric driving mechanism comprises a second motor and a second screw rod which are in transmission connection, and the first screw rod and the second screw rod are respectively in threaded transmission connection with the second support and the second sliding rods.

10. Projection equipment, including, camera lens and ray apparatus, its characterized in that:

the projection device further comprises a lens adjusting module as claimed in claim 8 or 9, the lens is fixedly connected with the second slider, the first bracket is respectively connected with the second bracket and the optical machine, and the first bracket is provided with a light transmission part for transmitting and injecting the light beam generated by the optical machine into the lens.