CN215181367U - Lens adjusting bracket and projection device - Google Patents

Abstract

The utility model provides a support is adjusted to camera lens, including support base, first adjustment mechanism, camera lens fixed plate and second adjustment mechanism. The first adjusting mechanism comprises an adjusting bottom plate, and the adjusting bottom plate is installed on the support base and can move relative to the support base. The lens fixing plate and the adjusting bottom plate are arranged at intervals relatively. The second adjusting mechanism is elastically connected between the adjusting bottom plate and the lens fixing plate and used for adjusting the inclination angle and the inclination direction of the lens fixing plate relative to the adjusting bottom plate. The utility model provides a support is adjusted to camera lens drives camera lens fixed plate and the holistic removal of second adjustment mechanism through first adjustment mechanism's removal to inclination and the incline direction of camera lens fixed plate relative regulation bottom plate are realized to second adjustment mechanism, make first adjustment mechanism and second adjustment mechanism mutually independent on respective regulation motion, and each other does not influence, are favorable to guaranteeing stability and the regulation precision of adjusting the camera lens. The utility model also provides a projection arrangement.

Description

Lens adjusting bracket and projection device

Technical Field

The utility model relates to a technical field is adjusted to the camera lens, particularly, relates to a support and projection arrangement are adjusted to camera lens.

Background

With the continuous development of lens adjustment technology, people have higher and higher requirements on lens adjustment devices. After the lens is fixed on the lens adjusting device, the relative position or angle of the lens can be adjusted by adjusting the lens adjusting device, so that the projection quality or the imaging quality can be adjusted.

However, the conventional lens adjusting device needs to be repeatedly adjusted back to meet the requirement, and the stability and precision of lens adjustment need to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a support and projection arrangement are adjusted to camera lens to solve above-mentioned problem. The embodiment of the utility model provides an above-mentioned purpose is realized through following technical scheme.

In a first aspect, an embodiment of the present invention provides a lens adjusting bracket, including a bracket base, a first adjusting mechanism, a lens fixing plate and a second adjusting mechanism. The first adjusting mechanism comprises an adjusting bottom plate, and the adjusting bottom plate is installed on the support base and can move relative to the support base. The lens fixing plate and the adjusting bottom plate are arranged at intervals relatively. The second adjusting mechanism is elastically connected between the adjusting bottom plate and the lens fixing plate and used for adjusting the inclination angle and the inclination direction of the lens fixing plate relative to the adjusting bottom plate.

In one embodiment, the adjusting bottom plate comprises a first adjusting bottom plate and a second adjusting bottom plate, the second adjusting bottom plate is fixedly installed on the first adjusting bottom plate, and the second adjusting bottom plate is elastically connected with the second adjusting mechanism.

In an embodiment, the first adjusting mechanism further comprises an adjusting motor and a motor transmission seat, the adjusting motor is installed on the support base and is in transmission connection with the motor transmission seat, the motor transmission seat is connected with the first adjusting bottom plate, and the adjusting motor drives the motor transmission seat to drive the first adjusting bottom plate to move.

In one embodiment, the first adjusting bottom plate comprises an adjusting main body part, a connecting main body part, a first connecting part, a second connecting part and a third connecting part, wherein the connecting main body part is connected with the adjusting main body part; the lens adjusting bracket further comprises a first guide sliding assembly, a second guide sliding assembly and a third guide sliding assembly, the first guide sliding assembly is connected between the first connecting portion and the bracket base, the second guide sliding assembly is connected between the second connecting portion and the bracket base, the third guide sliding assembly is connected between the third connecting portion and the bracket base, and the first guide sliding assembly and the second guide sliding assembly have height difference relative to the bracket base.

In one embodiment, the first adjustment mechanism further comprises a support block connected between the adjustment base plate and the bracket base.

In one embodiment, the support block is fixedly connected to the bracket base and provided with a through hole, the adjusting bottom plate is provided with a through groove, and the first adjusting mechanism further comprises a fastener, wherein the fastener penetrating through the through groove and the through hole is suitable for connecting the support block and the adjusting bottom plate to the bracket base.

In one embodiment, the second adjusting mechanism includes a plurality of elastic adjusting members disposed around a central axis of the lens fixing plate, and each elastic adjusting member is elastically connected between the adjusting base plate and the lens fixing plate.

In one embodiment, each set of elastic adjusting parts comprises a fixing screw, an elastic element and an adjusting nut, the lens fixing plate is provided with a plurality of screw through holes, the screw through holes correspond to the fixing screws one to one, the fixing screws are connected to the adjusting bottom plate and penetrate through the screw through holes, the elastic element is wound on the fixing screws and is located between the adjusting bottom plate and the lens fixing plate, and the adjusting nut is in threaded connection with the fixing screws penetrating through the screw through holes.

In one embodiment, the lens fixing plate is made of a magnesium alloy material.

In a second aspect, the embodiment of the present invention further provides a projection apparatus, which includes a projection lens and any one of the lenses adjusting bracket, wherein the projection lens is installed on the lens fixing plate.

Compared with the prior art, the utility model provides a support and projection arrangement are adjusted to camera lens, the camera lens is adjusted the support and is included the support base, first adjustment mechanism, camera lens fixed plate and second adjustment mechanism, first adjustment mechanism is including adjusting the bottom plate, adjust the bottom plate and install in the support base, but and relative support base removes, the camera lens fixed plate sets up with adjusting the relative interval of bottom plate, second adjustment mechanism elastic connection is between adjusting bottom plate and camera lens fixed plate, can realize inclination and the incline direction of camera lens fixed plate relative regulation bottom plate through second adjustment mechanism, thereby realize the regulation of camera lens every single move, can realize the holistic removal of camera lens fixed plate and second adjustment mechanism through first adjustment mechanism, thereby realize burnt regulation behind the camera lens. The first adjusting mechanism moves to drive the lens fixing plate and the second adjusting mechanism to integrally move, so that the first adjusting mechanism and the second adjusting mechanism are independent of each other in adjusting movement and do not influence each other, and the stability and the adjusting precision of lens adjustment are guaranteed.

These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

Drawings

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

Fig. 1 is a schematic structural diagram of a lens adjusting bracket according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the first adjusting mechanism and the bracket base provided in an embodiment of the present invention at a viewing angle.

Fig. 3 is a schematic structural diagram of the first adjusting mechanism and the bracket base provided in the embodiment of the present invention at another viewing angle.

Fig. 4 is a schematic structural diagram of a lens fixing plate and a second adjusting mechanism according to an embodiment of the present invention.

Fig. 5 is an exploded schematic view of a lens fixing plate and a second adjusting mechanism according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a lens fixing plate and a second adjusting mechanism (including a lens) according to an embodiment of the present invention.

Fig. 7 is a schematic distribution diagram of the first guide sliding assembly, the second guide sliding assembly and the third guide sliding assembly provided by the embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The lens adjusting mechanism mainly comprises two modes of focus clear adjustment and OFFSET adjustment, and the focus clear adjustment is divided into lens back focus adjustment and lens pitching adjustment. The back focal length of the lens is designed to be consistent with the distance between a Digital Micromirror Device (DMD) and the back focal length of the lens on the air. The back focal adjustment of the lens means moving the lens plane so that the front plate of the lens holder is closer to or farther away from the DMD plane. In order to ensure that the lens is parallel to the DMD, a lens pitching adjusting mechanism is required, and the purpose of pitching adjustment of the lens support is to enable a projected image to be focused clearly in the global direction by enabling a lens central shaft to reach an ideal position. The back focus adjustment and the pitching adjustment of the lens are usually very small but have high precision requirements, and are mostly set to be manual adjustment. The precision requirements of the back focus adjustment and the pitching adjustment of the lens are high, so that the clear adjustment process of the lens focus occupies most of the whole lens adjustment, and the mutual influence of the pitching adjustment and the back focus is a main factor for restricting the simplicity and convenience of the adjustment process. OFFSET adjustment requires adjustment of the lens relative to the internal optics of the projector (DMD) to shift the image on the screen (off-axis), primarily in X and Y directions perpendicular to the optical axis. Since the OFFSET adjustment is frequent and usually requires recording of the position, it is often set as an electrical adjustment in high lumen projection.

The inventor of the present application has found that the existing lens tilt adjustment usually interferes with the OFFSET adjustment of the entire mount, requiring repeated adjustments of the tilt and back focus to achieve global sharpness.

The inventors also found that thermal defocus is a key indicator affecting the quality of a projector, and that thermal defocus generated by thermal expansion is one of the important factors affecting the back focus of a lens for a high-lumen lens having a luminance of 20000lm or more, and that the entire thermal defocus in the lens proceeds toward the DMD.

Referring to fig. 1, an embodiment of the present invention provides a lens adjusting bracket 10, including a bracket base 11, a first adjusting mechanism 13, a lens fixing plate 14 and a second adjusting mechanism 15, where the first adjusting mechanism 13 is installed on the bracket base 11, the lens fixing plate 14 and the first adjusting mechanism 13 are spaced relatively, and the second adjusting mechanism 15 is elastically connected between the first adjusting mechanism 13 and the lens fixing plate 14.

Referring to fig. 2 and 3, the rack base 11 includes a bottom wall 112, a side wall 114 and a mounting boss 116, wherein the side wall 114 and the mounting boss 116 are respectively located at two sides of the bottom wall 112. In this embodiment, the bottom wall 112, the side wall 114, and the mounting boss 116 are a unitary structure. In other embodiments, the side wall 114 and the mounting boss 116 may be attached to the bottom wall 112 by adhesive, screws, or snaps.

The bottom wall 112 includes a bottom surface 1121, and the side wall 114 and the mounting boss 116 are connected to the bottom wall 112 and protrude in the same direction from the bottom surface 1121. The bottom surface 1121 is provided with a receiving groove 1123, and the receiving groove 1123 is recessed from the bottom surface 1121 in a direction away from the mounting boss 116. In this embodiment, the accommodating groove 1123 is a rectangular groove. In other embodiments, the containing groove 1123 may also be circular, oval or other shapes, which may be set according to actual situations.

In this embodiment, the side wall 114 is vertically connected to the bottom wall 112 and is located at the edge of the bottom wall 112.

Referring to fig. 1, 2 and 3, the mounting boss 116 is provided with a step, specifically, the mounting boss 116 includes a first step surface 1162, a connection surface 1164 and a second step surface 1166, the connection surface 1164 is connected between the first step surface 1162 and the second step surface 1166, the first step surface 1162 and the second step surface 1166 are parallel to and spaced apart from each other and parallel to the bottom surface 1121, and the first step surface 1162 is located between the bottom surface 1121 and the second step surface 1166.

The first adjusting mechanism 13 includes an adjusting base plate 131, and the adjusting base plate 131 is mounted on the rack base 11 and can move relative to the rack base 11. In this embodiment, the movement of the adjustment base plate 131 may be driven by a driving motor. In other embodiments, the movement of the adjustment base plate 131 can be manually operated by a user, that is, the adjustment base plate 131 can be manually adjusted to move the adjustment base plate 131 relative to the support base 11. In the present embodiment, the first adjusting mechanism 13 is used for adjusting the back focus of the lens, and can adjust the sharpness of the projection picture.

Referring to fig. 3, 4 and 5, in the present embodiment, the adjusting bottom plate 131 includes a first adjusting bottom plate 1310 and a second adjusting bottom plate 1320, the first adjusting bottom plate 1310 is mounted on the bracket base 11 and can move relative to the bracket base 11, and the second adjusting bottom plate 1320 is fixedly mounted on the first adjusting bottom plate 1310. Since the first adjusting bottom plate 1310 is mounted on the bracket base 11 and can move relative to the bracket base 11, and the second adjusting bottom plate 1320 is fixedly mounted on the first adjusting bottom plate 1310, the second adjusting bottom plate 1320 can be moved by the movement of the first adjusting bottom plate 1310. The normal direction of the plane where the first adjusting bottom plate 1310 is located is defined as the Z-axis direction, in this embodiment, the first adjusting bottom plate 1310 can move along the Z-axis direction, that is, the first adjusting bottom plate 1310 can move back and forth; in the actual adjustment process, the second adjustment base plate 1320 may be fixedly mounted to the first adjustment base plate 1310 after adjusting the stroke of the second adjustment base plate 1320 along the X or Y axis, that is, after the OFFSET adjustment is completed.

With reference to fig. 2 and 3, the first adjustable bottom plate 1310 includes an adjustable main body portion 1311, a connecting main body portion 1312, a first connecting portion 1313, a second connecting portion 1314 and a third connecting portion 1315, the connecting main body portion 1312 is connected to the adjustable main body portion 1311, the first connecting portion 1313 and the second connecting portion 1314 are connected to the connecting main body portion 1312, the third connecting portion 1315 is connected to the adjustable main body portion 1311, the first connecting portion 1313 and the second connecting portion 1314 are located on the same side of the adjustable main body portion 1311, and the first connecting portion 1313 and the third connecting portion 1315 are located on opposite sides of the adjustable main body portion 1311. In this embodiment, the first connecting portion 1313 and the second connecting portion 1314 are fixed to the connecting main body portion 1312, and the connecting main body portion 1312 is fixedly connected to the adjusting main body portion 1311, which may be fixed by screws. The third connecting portion 1315 is integrally formed with the adjustment body portion 1311. In other embodiments, the connecting body portion 1312, the first connecting portion 1313, the second connecting portion 1314, the third connecting portion 1315 and the adjusting body portion 1311 may all be integrally formed.

The adjusting body 1311 is substantially a rectangular plate-shaped structure, and a normal direction of a plane where the adjusting body 1311 is located coincides with the Z-axis direction, and the adjusting body 1311 may be used to fixedly connect the second adjusting base plate 1320.

Connecting body portion 1312 has a substantially rectangular plate-like structure, and the axial direction of the plane in which connecting body portion 1312 is located coincides with the Z-axis direction, connecting body portion 1312 may be used for connection with first connecting portion 1313 and second connecting portion 1314.

The first connection portion 1313 and the second connection portion 1314 are each a rectangular plate-like structure, and the first connection portion 1313 and the second connection portion 1314 each extend in the Z-axis direction from the connection main body portion 1312. In this embodiment, a plane of the first connecting portion 1313 may be parallel to a plane of the second connecting portion 1314, a height difference exists between the first connecting portion 1313 and the second connecting portion 1314, the first connecting portion 1313 is opposite to the first step surface 1162, and the second connecting portion 1314 is opposite to the second step surface 1166. The first connecting portion 1313 and the second connecting portion 1314 may be slidably connected to the mounting boss 116 to enable the first adjustment mechanism 13 to move in the Z-axis direction relative to the holder base 11. In other embodiments, the plane of the first connecting portion 1313 may not be parallel to the plane of the second connecting portion 1314.

The third connecting portion 1315 includes a slide connecting plate 1316 and a bracket connecting plate 1318, both the slide connecting plate 1316 and the bracket connecting plate 1318 being of rectangular plate-like construction and each extending from the main body portion 1311 in a direction opposite to the Z-axis direction, the slide connecting plate 1316 being opposite the bottom surface 1121, and the bracket connecting plate 1318 being opposite the plane in which the side walls 114 lie. In addition, the first connection portion 1313 is opposite to the first step surface 1162, the second connection portion 1314 is opposite to the second step surface 1166, and both the first connection portion 1313 and the second connection portion 1314 extend from the main adjustment body 1311 along the Z-axis direction, so that the stroke of the adjustment base plate 131 along the Z-axis direction can be sufficiently long, and the stability of the movement of the adjustment base plate 131 is improved. The slide coupling plate 1316 and the bracket coupling plate 1318 are vertically coupled such that the third coupling portion 1315 is substantially plate-shaped with an L-shaped cross section. In this embodiment, the connection between the sliding connection plate 1316 and the bracket connection plate 1318 is through a circular arc transition to reduce stress concentration at the connection between the sliding connection plate 1316 and the bracket connection plate 1318, and improve the strength of the third connection portion 1315. The slip web 1316 is provided with a through slot 1317, the through slot 1317 being generally long U-shaped and extending in the Z-axis direction.

In this embodiment, the first adjustable bottom plate 1310 further includes a fourth connection portion 1319, and the fourth connection portion 1319 extends from the main body portion 1311 in the Z-axis direction and is connected between the first connection portion 1313 and the second connection portion 1314, so that the first connection portion 1313, the fourth connection portion 1319, and the second connection portion 1314 form a one-step structure as a whole. The fourth connection portion 1319 is opposite to the connection face 1164.

Referring to fig. 2, fig. 3 and fig. 7, in the present embodiment, the lens adjusting bracket 10 further includes a first sliding guide assembly 17, a second sliding guide assembly 18 and a third sliding guide assembly 19, and the first sliding guide assembly 17, the second sliding guide assembly 18 and the third sliding guide assembly 19 all have a function of guiding the first adjusting base plate 1310 and all extend along the Z-axis direction, so that the first adjusting base plate 1310 can slide along the Z-axis direction relative to the bracket base 11. In this embodiment, the lengths of the first sliding guide assembly 17, the second sliding guide assembly 18, and the third sliding guide assembly 19 may be increased, so that the first adjusting bottom plate 1310 may have a longer stroke relative to the holder base 11, that is, the stroke of back focus adjustment may be increased, and the second adjusting bottom plate 1320, the lens fixing plate 14, and the second adjusting mechanism 15 may move away from or close to the DMD during the back focus adjustment, so as to ensure the accuracy and stability during the adjustment.

The first slide guide assembly 17 is connected between the first connecting portion 1313 and the first step surface 1162, the second slide guide assembly 18 is connected between the second connecting portion 1314 and the second step surface 1166, the third slide guide assembly 19 is connected between the bracket connecting plate 1318 and the side wall 114, and the first slide guide assembly 17 and the second slide guide assembly 18 have a height difference with respect to the bracket base 11. Since the first connecting portion 1313 and the second connecting portion 1314 are located on the same side of the adjusting body 1311, the first connecting portion 1313 and the third connecting portion 1315 are located on opposite sides of the adjusting body 1311, the first guiding and sliding component 17 is connected between the first connecting portion 1313 and the side wall 114, the second guiding and sliding component 18 is connected between the second connecting portion 1314 and the first step surface 1162, the third guiding and sliding component 19 is connected between the third connecting portion 1315 and the second step surface 1166, and the first guiding and sliding component 17 and the second guiding and sliding component 18 have a height difference with respect to the stand base 11, the first guiding and sliding component 17, the second guiding and sliding component 18 and the third guiding and sliding component 19 are located at the triangle vertex of the triangle, so as to ensure the accuracy and stability of adjusting the back focus of the lens.

The first slide guiding assembly 17, the second slide guiding assembly 18 and the third slide guiding assembly 19 have the same structure and comprise guide rails and sliding grooves. In this embodiment, the guide rail may be disposed on the bracket base 11, and the sliding groove may be disposed on the first adjusting bottom plate 1310. The guide rail can bear larger load, is generally suitable for projectors with heavier lenses such as engineering machines, cinema machines and the like, and simultaneously ensures the precision and the stability during adjustment due to the good flatness and the good lubricating property of the guide rail. In this embodiment, the guide rail is a precise linear guide rail, and the distance of back focus adjustment can be prolonged on the premise of not changing the pitch adjustment stroke, so that the universality of the back focus of multiple types of lenses is ensured, that is, the adjustment of the multiple types of lenses can be adapted. In other embodiments, the guide rail may be disposed on the first adjusting bottom plate 1310, and the sliding groove may be disposed on the bracket base 11, so as to satisfy the function of guiding the first adjusting bottom plate 1310 to slide, so that the first adjusting bottom plate 1310 can slide relative to the bracket base 11.

The second adjusting bottom plate 1320 has a substantially rectangular plate-like structure, and the second adjusting bottom plate 1320 is elastically connected to the lens fixing plate 14, so that the second adjusting bottom plate 1320 is not affected when the second adjusting mechanism 15 adjusts the lens fixing plate 14. In this embodiment, the second adjusting bottom plate 1320 has a double-layer plate structure and is fixedly connected to the first adjusting bottom plate 1310 by screws.

The first adjusting mechanism 13 further includes an adjusting motor 133 and a motor driving base 135, the motor driving base 135 is connected to the first connecting portion 1313, and the adjusting motor 133 can drive the motor driving base 135 to move, so as to drive the first adjusting bottom plate 1310 to move along the Z-axis direction.

The adjusting motor 133 is installed on the bracket base 11 and is in transmission connection with the motor transmission seat 135, and the adjusting motor 133 can drive the motor transmission seat 135 and drive the first adjusting bottom plate 1310 to move along the Z-axis direction. Specifically, the adjusting motor 133 may be fixedly mounted on the bracket base 11, wherein the fixing manner may be screw fixing, bonding, or other manners. The motor output shaft of adjusting motor 133 can with screw rod fixed connection, motor transmission seat 135 can set up the swivel nut, drive the screw rod through the motor output shaft and rotate, make have relative displacement between screw rod and the motor transmission seat 135, and motor transmission seat 135 is connected with first regulation bottom plate 1310, therefore adjusting motor 133 can drive motor transmission seat 135 and drive first regulation bottom plate 1310 and remove along the Z axle direction.

With continued reference to fig. 2 and 3, the first adjusting mechanism 13 further includes a supporting block 136, and the supporting block 136 is connected between the sliding connecting plate 1316 of the first adjusting bottom plate 1310 and the bracket base 11 to support the first adjusting bottom plate 1310. In this embodiment, the material of supporting shoe 136 is teflon, and teflon has the characteristic of self-lubricating, consequently can reduce the frictional force that first regulation bottom plate 1310 removed relative to support base 11 to do benefit to first regulation bottom plate 1310 and remove along the Z axle direction relative to support base 11, can guarantee the smooth and easy regulation of first regulation bottom plate 1310 relative to support base 11, do benefit to burnt smooth and easy regulation behind the camera lens. In other embodiments, a material with good lubricating property, such as graphite, may be disposed between the adjusting bottom plate 131 and the holder base 11, and the adjusting bottom plate 131 may be covered with graphite.

In the present embodiment, the supporting block 136 is fixedly connected to the bracket base 11, specifically, the supporting block 136 may be disposed in the receiving groove 1123, and the supporting block 136 disposed in the receiving groove 1123 protrudes from the bottom surface 1121 to support the first adjusting bottom plate 1310, wherein the supporting block 136 may be disposed in the receiving groove 1123 in an interference fit manner, an adhesive manner, or the like. The supporting block 136 is provided with a plurality of locking holes 1361, the locking holes 1361 penetrate through the supporting block 136 along the thickness direction of the supporting block 136, and it should be noted that the locking holes 1361 may be blind holes or through holes. In this embodiment, the number of the locking holes 1361 is three same through holes, and the three locking holes 1361 are sequentially distributed along the Z-axis direction.

With continued reference to fig. 2 and 3, the first adjusting mechanism 13 further includes a fastener 137, and the fastener 137 passing through the through slot 1317 and the lock hole 1361 is adapted to connect the supporting block 136 and the adjusting base plate 131 to the bracket base 11. That is, the fastening member 137 may be sequentially inserted through the through slot 1317 and the locking hole 1361 to be mounted on the bracket base 11, so as to fix both the supporting block 136 and the adjusting base plate 131 to the bracket base 11, thereby preventing the first adjusting base plate 1310 from moving relative to the bracket base 11 after the back focus is adjusted. It should be noted that, after the back focus is adjusted, the supporting block 136 and the adjusting bottom plate 131 are both fixed to the bracket base 11 by tightening the fastening member 137, so as to ensure the stability of the adjusted lens. Specifically, a threaded hole (not shown) coaxial with the lock hole 1361 may be disposed in the accommodating groove 1123, and the threaded hole may be matched with the fastener 137, so that the fastener 137 may be fixedly connected to the bracket base 11, and the support block 136 and the adjustment bottom plate 131 are both fixed to the bracket base 11, and thus, no matter where the first adjustment bottom plate 1310 is moved, the hard locking may be performed by the fastener 137, so that the rear focal length of the lens is adjusted well and then the influence of other adjustments is not received, thereby ensuring the stability of the rear focal length of the lens after the adjustment. It should be noted that the length of the through slot 1317 of the sliding connection plate 1316 along the Z-axis direction limits the displacement of the first adjusting bottom plate 1310 along the Z-axis direction. In the present embodiment, the fastener 137 is a fixing bolt.

Referring to fig. 2, 4 and 5, the lens fixing plate 14 and the second adjusting bottom plate 1320 are disposed at an interval, and the second adjusting bottom plate 1320 is elastically connected to the lens fixing plate 14, that is, the lens fixing plate 14 is disposed at the end of the whole lens adjusting bracket 10, so that the adjustment of the lens fixing plate 14 does not interfere with the movement of the first adjusting bottom plate 1310 along the Z-axis direction (back focus adjustment), and the adjustment center and the adjustment plane do not change due to the adjustment of the lens fixing plate 14, so that the back focus adjustment of the first adjusting mechanism 13 and the pitch adjustment of the second adjusting mechanism 15 are independent and do not affect each other in their respective adjustment movements, thereby eliminating the coupling phenomenon in the pitch adjustment process, facilitating to ensure the stability and the adjustment accuracy of the lens adjustment, simplifying the lens adjustment process, and saving the adjustment time. In the present embodiment, the lens holding plate 14 is spaced from the second adjusting base plate 1320 in the Z-axis direction. The lens holder plate 14 has a substantially hollow square plate-like structure. The lens fixing plate 14 is provided with a lens mounting hole 141 and a plurality of screw penetration holes 142, the lens mounting hole 141 may be used to mount a lens, and the screw penetration holes 142 are provided around the lens mounting hole 141. In the present embodiment, the number of the screw through holes 142 is four, and the four screw through holes 142 are substantially disposed at four corners of the square lens fixing plate 14, so as to facilitate the installation of the second adjusting mechanism 15.

Referring to fig. 6, in the present embodiment, the lens fixing plate 14 is made of a magnesium alloy material, and the thermal expansion coefficient of the magnesium alloy is high. For a high lumen lens with a brightness of 20000lm or more, thermal defocusing due to thermal expansion is one of important factors affecting the back focus of the lens, and the entire thermal defocusing inside the lens proceeds toward the DMD. For the utility model discloses a support 10 is adjusted to the camera lens, because the camera lens is fixed on camera lens fixed plate 14, and camera lens fixed plate 14 is elastic connection with second adjusting bottom plate 1320, that is, camera lens fixed plate 14 is located the end (the free end) that support 10 was adjusted to whole camera lens, consequently, camera lens fixed plate 14 adopts the higher magnesium alloy of coefficient of thermal expansion in the metal, expand towards keeping away from the DMD direction when can making the camera lens be heated, can compensate about 10% of heat defocus, that is to say, camera lens fixed plate 14 is made by the magnesium alloy material, can reduce the influence of heat defocus burnt behind the camera lens on the basis that does not influence OFFSET adjusts.

Referring to fig. 2, fig. 4 and fig. 5, the second adjusting mechanism 15 is elastically connected between the adjusting base plate 131 and the lens fixing plate 14, and is used for adjusting the inclination angle and the inclination direction of the lens fixing plate 14 relative to the adjusting base plate 131. In the present embodiment, the second adjustment mechanism 15 is used to adjust the pitch adjustment of the lens. That is, the elevation or depression of the lens mount 14 with respect to the adjustment base plate 131 is adjusted, and the tilt direction of the lens mount 14 with respect to the adjustment base plate 131 is adjusted. The lens fixing plate 14 is disposed at the end of the whole lens adjusting bracket 10, so that the adjustment of the lens fixing plate 14 does not interfere with the movement of the first adjusting base plate 1310 along the Z-axis direction (back focus adjustment), the adjusting center and the adjusting plane do not change due to the adjustment of the lens fixing plate 14, so that the back focus adjustment of the first adjusting mechanism 13 and the pitching adjustment of the second adjusting mechanism 15 are independent of each other in their adjusting movements, without affecting each other, eliminating the coupling phenomenon existing in the pitching adjustment process, which is beneficial to ensuring the stability and adjusting precision of the lens adjustment, simplifying the lens adjustment process, and saving the adjusting time. For example, after every single move is adjusted and is accomplished, can drive second regulation bottom plate 1320 and camera lens fixed plate 14 through accommodate motor 133 and remove along the Z axle direction for the camera lens is close to or keeps away from DMD, mutual interference when comparing in current every single move regulation and back burnt regulation, and the difficult quantization of accommodation process, the utility model discloses add the burnt first adjustment mechanism 13 in back that is used for adjusting the camera lens alone, can carry out back burnt regulation on the basis that does not change every single move regulation completely, simplified the accommodation process of camera lens, greatly reduced adjust man-hour.

The second adjusting mechanism 15 includes a plurality of sets of elastic adjusting members 152, the plurality of sets of elastic adjusting members 152 are disposed around a central axis of the lens fixing plate 14, and each set of elastic adjusting members 152 is elastically connected between the adjusting base plate 131 and the lens fixing plate 14. In the present embodiment, the number of the elastic adjustment members 152 is three, and the three sets of the elastic adjustment members 152 are arranged in a right triangle around the central axis of the lens fixing plate 14, that is, the three sets of the elastic adjustment members 152 are located at the triangular vertexes of the right triangle. Here, the right elastic adjustment member 152 adjusts the left and right pitching, and the upper elastic adjustment members 152 adjust the up and down pitching in the viewing angle shown in fig. 5. In other embodiments, the number of the elastic adjusting members 152 may be four, five or more groups on the basis of adjusting the inclination angle and the inclination direction of the lens fixing plate 14 relative to the adjusting base plate 131, so as to realize adjustment of more angles and improve the accuracy of the pitch adjustment.

Each set of resilient adjustment members 152 includes a set screw 1521, a resilient member 1523, and an adjustment nut 1525. The fixing screws 1521 are connected to the second adjusting base plate 1320 and pass through the screw through holes 142 of the lens fixing plate 14, the fixing screws 1521 correspond to the screw through holes 142 one by one, the elastic element 1523 is wound around the fixing screws 1521 and located between the adjusting base plate 131 and the lens fixing plate 14, and the adjusting nut 1525 is in threaded connection with the fixing screws 1521 passing through the screw through holes 142 of the lens fixing plate 15. By rotating the adjusting nut 1525, the adjusting nut 1525 moves relative to the fixing screw 1521, and the adjusting nut 1525 acts on the lens fixing plate 14 to move the lens fixing plate 14 relative to the second adjusting base plate 1320, so that the lens and the DMD are adjusted.

In this embodiment, the number of the fixing screws 1521, the adjusting nuts 1525, and the screw holes 142 is four, the four fixing screws 1521 are connected to four corners of the second adjusting base plate 1320, and the number of the elastic elements 1523 is three, that is, there is one fixing screw 1521 without winding the elastic element 1523, so that the cost can be saved on the basis of ensuring the lens pitching adjustment. In other embodiments, the number of the elastic elements 1523 may also be four, that is, each of the fixing screws 1521 is wound with the elastic element 1523. In this embodiment, the elastic element 1523 is a strong spring.

The utility model provides a support 10 is adjusted to camera lens can be applied to among high lumen projector products such as current engineering machine and cinema machine, both can guarantee the regulation precision and the stability of camera lens, can promote again and produce property ability and governing speed, practices thrift the cost.

To sum up, the utility model provides a support 10 is adjusted to camera lens, including support base 11, first adjustment mechanism 13, camera lens fixed plate 14 and second adjustment mechanism 15, first adjustment mechanism 13 is including adjusting bottom plate 131, adjusting bottom plate 131 installs in support base 11, and support base 11 removes relatively, camera lens fixed plate 14 sets up with the relative interval of adjusting bottom plate 131, 15 elastic connection of second adjustment mechanism are between adjusting bottom plate 131 and camera lens fixed plate 14, second adjustment mechanism 15 can realize the relative inclination and the incline direction of adjusting bottom plate 131 of camera lens fixed plate 14, thereby realize the regulation of camera lens every single move, can realize the whole removal along the Z axle direction of camera lens fixed plate 14 and second adjustment mechanism 15 through first adjustment mechanism 13, thereby realize burnt regulation behind the camera lens. The first adjusting mechanism 13 moves to drive the lens fixing plate 14 and the second adjusting mechanism 15 to move integrally, so that the first adjusting mechanism 13 and the second adjusting mechanism 15 are independent of each other in respective adjusting movement and do not influence each other, the coupling phenomenon existing in the pitching adjusting process is eliminated, the stability and the adjusting precision of lens adjustment are guaranteed, the lens adjusting process can be simplified, and the adjusting time is saved.

Referring to fig. 8, an embodiment of the present invention further provides a projection apparatus 1, which includes a projection lens 30 and a lens adjusting bracket 10, wherein the projection lens 30 is mounted on the lens fixing plate 14, specifically mounted in the lens mounting hole 141, and the mounting manner may be a clamping manner or a screwing manner.

To sum up, the utility model provides a projection arrangement 1, adjust support 10 including projection lens 30 and camera lens, projection lens 30 is installed in camera lens fixed plate 14, camera lens is adjusted support 10 and is included support base 11, first adjustment mechanism 13, camera lens fixed plate 14 and second adjustment mechanism 15, it is mutually independent on respective regulation motion through first adjustment mechanism 13 and second adjustment mechanism 15, each other does not influence, the coupling phenomenon that exists in the every single move accommodation process has been eliminated, be favorable to guaranteeing stability and the regulation precision of adjusting projection lens 30, projection lens 30 accommodation process can also be simplified, save and adjust man-hour.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A lens adjusting mount, comprising:

a bracket base;

the first adjusting mechanism comprises an adjusting bottom plate, and the adjusting bottom plate is mounted on the bracket base and can move relative to the bracket base;

the lens fixing plate and the adjusting bottom plate are oppositely arranged at intervals; and

and the second adjusting mechanism is elastically connected between the adjusting bottom plate and the lens fixing plate and is used for adjusting the inclination angle and the inclination direction of the lens fixing plate relative to the adjusting bottom plate.

2. The lens adjusting bracket according to claim 1, wherein the adjusting base plate includes a first adjusting base plate and a second adjusting base plate, the second adjusting base plate is fixedly mounted on the first adjusting base plate, and the second adjusting base plate is elastically connected to the lens fixing plate.

3. The lens adjusting bracket as claimed in claim 2, wherein the first adjusting mechanism further comprises an adjusting motor and a motor transmission seat, the adjusting motor is mounted on the bracket base and is in transmission connection with the motor transmission seat, the motor transmission seat is connected with the first adjusting bottom plate, and the adjusting motor drives the motor transmission seat to drive the first adjusting bottom plate to move.

4. The lens-adjusting holder according to claim 2,

the first adjusting bottom plate comprises an adjusting main body part, a connecting main body part, a first connecting part, a second connecting part and a third connecting part, the connecting main body part is connected with the adjusting main body part, the first connecting part and the second connecting part are connected with the connecting main body part, the third connecting part is connected with the adjusting main body part, the first connecting part and the second connecting part are positioned on the same side of the adjusting main body part, the first connecting part and the third connecting part are positioned on two opposite sides of the adjusting main body part, and the second adjusting bottom plate is fixedly installed on the adjusting main body part;

the lens adjusting support further comprises a first guide sliding assembly, a second guide sliding assembly and a third guide sliding assembly, the first guide sliding assembly is connected between the first connecting portion and the support base, the second guide sliding assembly is connected between the second connecting portion and the support base, the third guide sliding assembly is connected between the third connecting portion and the support base, and the first guide sliding assembly and the second guide sliding assembly are opposite to each other and have a height difference with the support base.

5. The lens adjusting bracket of claim 1, wherein the first adjusting mechanism further comprises a support block connected between the adjusting base plate and the bracket base.

6. The lens adjusting bracket as defined in claim 5, wherein the supporting block is fixedly connected to the bracket base and has a locking hole, the adjusting base plate has a through slot, and the first adjusting mechanism further comprises a fastening member passing through the through slot and the locking hole and adapted to connect the supporting block and the adjusting base plate to the bracket base.

7. A lens adjusting holder according to any one of claims 1 to 5, wherein the second adjusting mechanism includes a plurality of sets of elastic adjusting members disposed around a central axis of the lens mount plate, each set of the elastic adjusting members being elastically connected between the adjusting base plate and the lens mount plate.

8. The lens adjusting bracket according to claim 7, wherein each of the elastic adjusting members includes a fixing screw, an elastic member, and an adjusting nut, the lens fixing plate is provided with a plurality of screw through holes corresponding to the plurality of fixing screws one to one, the fixing screw is connected to the adjusting base plate and passes through the screw through hole, the elastic member is wound around the fixing screw and is located between the adjusting base plate and the lens fixing plate, and the adjusting nut is threadedly connected to the fixing screw passing through the screw through hole.

9. The lens adjusting mount according to any one of claims 1 to 5, wherein the lens fixing plate is made of a magnesium alloy material.

10. A projection device, comprising: a projection lens mounted to the lens holding plate, and a lens adjusting mount as recited in any one of claims 1 to 9.

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