Lens angle adjusting device

Abstract

A lens angle adjusting device comprises a flange plate and an adjusting mechanism, a lens is fixed on the flange plate, and the lens angle adjusting device is characterized in that the flange plate comprises a lens mounting part and an angle adjusting part protruding out of the lens mounting part; the adjusting mechanism comprises a fixing block, an elastic pushing and abutting mechanism, a rotary pushing and abutting mechanism and a rotary pushing mechanism, the fixing block is provided with a notch for containing the angle adjusting part of the flange plate, and the elastic pushing and abutting mechanism and the rotary pushing and abutting mechanism are located on the two sides of the notch and abut against the angle adjusting part; the elastic pushing and abutting mechanism comprises a first pushing and abutting piece, the first pushing and abutting piece elastically abuts against the angle adjusting part, the rotary pushing and abutting mechanism comprises a rotary cam piece and a second pushing and abutting piece, the rotary cam piece rotationally pushes the second pushing and abutting piece to stretch out and draw back, and the rotary pushing mechanism is connected with the rotary cam piece. The rotating cam member is driven to rotate, and the lens is accurately adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to a lens adjusting device, in particular to a lens angle adjusting device. BACKGROUND

[0002] The laser direct writing system is also called image direct projection system, which can be applied to the research and development, production of semiconductor and PCB and planar imaging field. Its principle is to use a pattern generator to replace the traditional mask technology, and directly expose the computer graphic data to the product, which can save cost and improve efficiency. The pattern generator can use a digital micromirror device (DMD). The digital micromirror device (DMD) is a micro-electro-mechanical system with electronic input and optical output, which includes an array of micro-mirrors with two tilt angles. In practical application, the light source is projected to the digital micromirror device after uniform light. The micro-mirror in the digital micromirror device has two tilt angles α and -α. When the tilt angle of the micro-mirror is α, the micro-mirror projects the light to the subsequent optical system, which corresponds to the opening of the digital circuit. When the tilt angle of the micro-mirror is -α, the micro-mirror tilts the light out of the subsequent optical system, which corresponds to the closing of the digital circuit. The tilt angle of the micro-mirror in the digital micromirror device is controlled to form the required pattern. Since the size of the micro-mirror in the digital micromirror device and the distance between adjacent micro-mirrors are fixed, the resolution of the product is limited. In order to improve the resolution and obtain more fine lines, the digital micromirror device is usually tilted relative to the scanning direction. The ideal tilt angle of the digital micromirror device is obtained by calculation. In order to obtain the ideal tilt angle, the angle of the lens is usually adjusted during the installation of the lens with the digital micromirror device, so as to adjust the tilt angle of the digital micromirror device.

[0003] At present, the way to adjust the angle of the lens is usually to knock or screw, which cannot accurately and precisely measure the angle, and greatly depends on the experience of the adjuster. Due to the restriction of the adjustment space, when the lenses installed on the machine are arranged closely, it is difficult to start. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a lens angle adjusting device for high-precision adjustment of the angle of the lens.

[0005] In order to solve the above problems, a lens angle adjusting device is provided, which comprises a flange plate and an adjusting mechanism, the lens is fixed to the flange plate, the flange plate comprises a lens mounting portion and an angle adjusting portion protruding from the lens mounting portion; the adjusting mechanism comprises a fixed block, an elastic pushing mechanism, a rotating pushing mechanism and a rotating driving mechanism, the fixed block is provided with a notch accommodating the angle adjusting portion of the flange plate, the elastic pushing mechanism and the rotating pushing mechanism are located on both sides of the notch and abut against the angle adjusting portion; the elastic pushing mechanism comprises a first pushing piece, the first pushing piece elastically abuts against the angle adjusting portion, the rotating pushing mechanism comprises a rotating cam piece and a second pushing piece, the rotating cam piece rotates to drive the second pushing piece to stretch and retract, and the rotating driving mechanism is connected to the rotating cam piece to drive the rotating cam piece to rotate.

[0006] In one embodiment, the rotating cam piece comprises a rotating shaft seat and a rotating driving rod, the rotating driving rod is arranged on the rotating shaft seat, the outer circumferential dimension of the rotating shaft seat gradually increases or gradually decreases from one end to the other end in the rotating direction, and the rotating driving rod is matched with the rotating driving mechanism.

[0007] In one embodiment, the rotating driving rod of the rotating cam piece is further provided with a horizontal through driving hole for mounting a pushing rod, the pushing rod passes through the through driving hole, and both ends of the pushing rod respectively protrude out of the through driving hole by a distance.

[0008] In one embodiment, the rotating driving mechanism comprises a rotating adjusting inner cylinder, the lower part of the rotating adjusting inner cylinder is provided with a hole slot, the hole slot is used for accommodating the upper part of the rotating driving rod, the slot wall of the hole slot is provided with an opening, the opening is matched with the pushing rod, the upper end of the rotating adjusting inner cylinder is provided with an adjusting reference part, and the adjusting angle is shown.

[0009] In one embodiment, the rotating driving mechanism further comprises a rotating adjusting outer sleeve, the rotating adjusting outer sleeve is fixed to the fixed block, the upper end of the rotating adjusting outer sleeve is provided with an adjusting reference part, the adjusting reference part is located at the upper end of the adjusting reference part, and the height of the rotating adjusting inner cylinder and the rotating adjusting outer sleeve of the rotating driving mechanism is higher than the narrow space of the lens mounting area.

[0010] In one embodiment, the adjusting reference part is arranged on the adjusting disc of the rotating adjusting inner cylinder, a plurality of scale teeth are engraved on the outer periphery of the adjusting disc, each scale tooth is a unit scale, or a plurality of scale lines are engraved on the outer periphery of the adjusting disc, and each unit scale is between two adjacent scale lines.

[0011] In one embodiment, the outer contour line of the rotary camshaft seat and the distance from the end of the second pusher that abuts against the flange to the adjustment center of the lens flange are used to calculate the correspondence between the rotation angle of the rotary adjustment inner cylinder and the rotation angle of the flange, and the unit scale of the adjustment reference part on the adjustment plate is set according to the required adjustment accuracy.

[0012] In one embodiment, the upper part of the rotating adjusting outer sleeve is provided with a reference plate adapted to the adjusting plate of the rotating adjusting inner sleeve. The size of the reference plate is equal to the size of the adjusting plate. The outer periphery of the reference plate is provided with engraving teeth of the same size as the adjusting plate, or scale lines of the same size, or the reference plate is provided with reference lines, or the reference plate is provided with marking teeth.

[0013] In one embodiment, the outer contour of the rotating camshaft seat is divided into multiple chord segments with equal angles according to the rotation angle. The distance between the starting point of each chord segment and the center point of the rotating cam component and the distance between the ending point and the center point of the rotating cam component increase proportionally.

[0014] In one embodiment, the lens angle adjustment device is further provided with an adjustment reference part and an adjustment reference part, wherein the adjustment reference part and the adjustment target part are provided with the same multiple unit scales; or either the adjustment reference part or the adjustment reference part is provided with a marking line.

[0015] In one embodiment, the rotating pushing mechanism further includes a limiting member, which is fixed to the fixing block. The limiting member includes a hole-shaft mating part, and the rotating cam includes a hole-shaft mating inner hole. The hole-shaft mating part of the limiting member is inserted into the hole-shaft mating inner hole of the rotating cam to perform a hole-shaft mating connection.

[0016] In one embodiment, the hole-shaft mating part further includes a limiting groove, the rotating shaft seat of the rotating cam component further includes a limiting hole, the limiting rod is inserted into the limiting hole of the rotating cam component and protrudes into the limiting groove of the limiting component.

[0017] Compared with the prior art, the lens angle adjustment device gradually changes the extension distance of the second pusher by driving the rotation of the rotary pusher mechanism through the rotary push mechanism, and gradually adjusts the lens angle by elastically pushing the angle adjustment part of the flange through the elastic pusher mechanism, which facilitates high-precision adjustment of the lens angle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of a lens angle adjustment device.

[0019] Figure 2 This is a split schematic diagram of an embodiment of the lens angle adjustment device.

[0020] Figure 3 This is a top view of an embodiment of a lens angle adjustment device.

[0021] Figure 4 This is a cross-sectional view along the AA cutting line of an embodiment of a lens angle adjustment device.

[0022] Figure 5 This is a partially enlarged cross-sectional view of an embodiment of a lens angle adjustment device.

[0023] Figure 6 This is a schematic diagram showing the disassembled elastic pushing mechanism and rotary pushing mechanism in one embodiment of the lens angle adjustment device.

[0024] Figure 7 This is a schematic diagram showing the disassembled elastic pushing mechanism of an embodiment of the lens angle adjustment device.

[0025] Figure 8 This is a top view schematic diagram of the adjustment dial in one embodiment of the lens angle adjustment device.

[0026] Figure 9 This is a top view schematic diagram of a rotating cam component in an embodiment of a lens angle adjustment device. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings.

[0028] pass Figures 1-9 The following embodiments illustrate the lens angle adjustment device.

[0029] The lens angle adjustment device includes a flange 1 and an adjustment mechanism 2. The flange 1 is used to fix the lens (not shown) to the machine base, and the lens angle is adjusted by adjusting the angle of the flange 1. The adjustment mechanism 2 is used to adjust the position of the flange 1 to adjust the lens angle.

[0030] The flange 1 includes a lens mounting portion 10 and an angle adjustment portion 11, the angle adjustment portion 11 protruding from and connected to the lens mounting portion 10. The lens mounting portion 10 includes a mounting body 100 and a mounting hole 101 located inside the mounting body 100. The lens passes through the mounting hole 101 and is fixedly mounted to the mounting body 100, which is fixed to the machine base. Preferably, the end of the angle adjustment portion 11 away from the mounting body 100 has an arc-shaped outer edge to prevent jamming during the adjustment of the flange 1.

[0031] The adjustment mechanism 2 includes a fixed block 20, an elastic pushing mechanism 21, a rotating pushing mechanism 22, and a rotating pushing mechanism 23. The fixed block 20 is installed on the machine base by fasteners 5. The elastic pushing mechanism 21 and the rotating pushing mechanism 22 are installed on the fixed block 20. The angle of the flange 1 is adjusted by the rotating pushing mechanism 22 and the elastic pushing mechanism 21. The rotating pushing mechanism 23 is inserted into the rotating pushing mechanism 22 and drives the rotating pushing mechanism 22 to rotate, which is convenient for operation.

[0032] The fixing block 20 includes a first extension arm 200 for mounting the elastic pushing mechanism 21, a second extension arm 201 for mounting the rotary pushing mechanism 22, a notch 202 located between the first extension arm 200 and the second extension arm 201 for accommodating the angle adjustment part of the flange, and a connecting part 203 connecting the first extension arm 200 and the second extension arm 201.

[0033] The first extension arm 200 is provided with a first through hole 2000 leading to the recess 202, and the elastic pushing mechanism 21 is installed in the first through hole 2000.

[0034] The second extension arm 201 is provided with a second through hole 2010 extending longitudinally through the second extension arm 201, a third through hole 2011 extending from the second through hole 2010 to the recess 202, and a fourth through hole 2012 extending from the second through hole 2010 to the outer side of the second extension arm 201. The rotating pushing mechanism 22 is installed in the second through hole 2010 and the third through hole 2011. The second through hole 2010 includes an upper mounting hole 2013, a middle fixing hole 2014, and a lower limiting hole 2015. The diameter of the mounting hole 2013 is larger than the diameter of the fixing hole 2014, and the diameter of the limiting hole 2015 is larger than the diameter of the fixing hole 2014. The fourth through hole 2012 facilitates the installation of the rotating pushing mechanism 22.

[0035] The elastic pushing mechanism 21 includes a first pushing member 210, an elastic member 211, and a first pressing member 212. The elastic member 211 is located between the first pushing member 210 and the first pressing member 212, and the first pressing member 212 is fixed to the first extension arm 200. The first pressing member 212 and the first extension arm 200 can be fastened by threads, and the first pressing member is further fixed by a set screw 213 to prevent the first pressing member 212 from loosening.

[0036] The first abutment 210 can be a pin. The cap end 2100 of the pin limits the first abutment 210, ensuring the initial elasticity of the elastic element 211. The rod portion 2101 of the pin pushes against the flange 1. Corresponding to the pin, the first through hole 2000 includes a small-diameter section for accommodating the rod portion 2101 and a large-diameter section for accommodating the cap end 2100 and the elastic element 211. The diameter of the large-diameter section is larger than the diameter of the small-diameter section, forming a limiting platform 2102 that restricts the position of the first abutment. The first abutment and the first elastic element 211 can be made of a spring, rubber, or other resilient element.

[0037] The rotating pushing mechanism 22 includes a rotating cam 220, a limiting member 221, and a second pushing member 222. The second pushing member 222 extends into the recess 202 through the third through hole of the fixing block 2. The rotating cam 220 and the limiting member 221 are installed in the second through hole 2010 of the fixing block 2. The two ends of the second pushing member 222 abut against the rotating cam 220 and the angle adjustment part 11 of the flange 1, respectively. The position of the second pushing member 222 is changed by the rotation of the rotating cam 220, and the second pushing member 222 pushes the flange 1 to move, thereby adjusting the lens angle. The limiting member 221 is fixed in the second through hole 2010 at a position relatively close to the machine tool, with its bottom end face located inside the second through hole 2010 to prevent the fixing block 2 from tilting. The rotating cam 220 is positioned in the second through hole 2010 at a position relatively far from the machine tool and is connected to the limiting member 221 through a hole-shaft connection.

[0038] The rotary cam component 220 includes a rotary bearing 2200, a rotary drive rod 2201, and a bore 2202 that fits with the shaft. The rotary drive rod 2201 is disposed on the rotary bearing 2200, and the outer circumferential dimension of the rotary bearing 2200 gradually increases or decreases from one end to the other according to the direction of rotation. The bore 2202 extends from the rotary bearing 2200 toward the rotary drive rod 2201 and is located at the center of the rotary cam component 220.

[0039] The limiting member 221 includes a limiting base 2210, a positioning part 2211, and a hole-shaft mating part 2212. The outer circumferential dimension of the limiting base 2210 is larger than the dimensions of the positioning part 2211 and the hole-shaft mating part 2212, and the outer circumferential dimension of the limiting base 2210 is larger than the dimension of the limiting hole 2015, so that the limiting base 2210 is accommodated in the limiting hole 2015, ensuring the position of the limiting member 221. The positioning part 2211 of the limiting member 221 is fixed to the fixing block 2, which can be fixed by a threaded connection. The hole-shaft mating part 2212 of the limiting member 221 is inserted into the hole-shaft mating inner hole 2202 of the rotating cam member 220, so that the rotating cam member 220 is installed on the limiting member 221.

[0040] The hole-shaft mating part 2212 of the limiting member 221 further includes a limiting groove 2213, and the rotating shaft seat of the rotating cam member 220 further includes a limiting hole 2203. A limiting rod 2204 is inserted into the limiting hole 2203 of the rotating cam member 220 and protrudes into the limiting groove 2213 of the limiting member 221, further limiting the position of the rotating cam member 220 and accurately positioning the rotating cam member 220. The limiting rod 2204 can be a set screw.

[0041] The rotary pushing mechanism 22 also includes a reinforcing member 223 for fixing the second pushing member 222. The reinforcing member 223 is inserted from above the fixing block 20 to fix the position of the second pushing member 222 after the angle adjustment is completed.

[0042] To facilitate adjustment of the rotary cam component 220, the rotary drive rod 2201 of the rotary cam component 220 is also provided with a horizontal through drive hole 2204 for mounting a push rod 2205. The push rod 2205 passes through the through drive hole 2204, and both ends of the push rod 2205 protrude a certain distance from the through drive hole 2204. Preferably, the center position of the push rod 2205 is aligned with the center position of the through drive hole 2204.

[0043] The rotary pushing mechanism 23 includes a rotary adjusting inner cylinder 230 and a rotary adjusting outer cylinder 231. The rotary adjusting outer cylinder is fixedly disposed on the fixed block 2. The rotary adjusting inner cylinder 230 is sleeved inside the rotary adjusting outer cylinder 231. The rotary adjusting inner cylinder 230 rotates relative to the rotary adjusting outer cylinder 231.

[0044] The lower part of the rotating adjusting inner cylinder 230 is provided with a groove 2300, which is used to accommodate the upper part of the rotating drive rod 2201. The groove wall of the groove 2300 is provided with an opening 2301 to accommodate the push rod 2205. The opening 2301 is adapted to the push rod 2205. If the push rod 2205 is cylindrical, the opening 2301 can be a rectangular opening corresponding to the size of the cylinder, so that when the rotating adjusting inner cylinder is rotated, the rotating adjusting inner cylinder 230 drives the push rod 2205 to rotate, and the push rod 2205 drives the rotating cam 220 to rotate. An adjusting disc 2302 is provided on the upper part of the rotating adjusting inner cylinder 230. The rotating adjusting inner cylinder 230 is nested into the rotating adjusting outer cylinder 231. The adjusting disc 2302 is located on the upper part of the rotating adjusting outer cylinder 231. The lower part of the rotating adjusting inner cylinder 230 has a gap with the rotating shaft seat 2200 of the rotating cam component 220. The adjusting disc 2302 is cylindrical. The adjusting disc is provided with a limiting arc hole 2305. A limiting screw 6 is inserted into the limiting arc hole 2305 and connected to the rotating adjusting outer cylinder 231 to initially limit the position of the rotating adjusting inner cylinder 230. After the angle adjustment is completed, the limiting screw 6 is tightened to fix the position of the rotating adjusting inner cylinder 230. The limiting arc hole 2305 corresponds to the adjustment path of the rotating adjusting inner cylinder 230.

[0045] The adjusting disc 2302 is equipped with an adjusting reference part 2303. This adjusting reference part 2303 can be constructed by engraving multiple scale teeth 2304 on the outer circumference of the adjusting disc according to a unit rotation angle. The rotation angle of the rotating inner cylinder 230 can be visually observed through these scale teeth 2304. Each scale tooth 2304 represents a unit graduation, which can serve as the smallest precise adjustment unit and the minimum rotation angle of the rotating inner cylinder. During precise adjustment, the rotation angle can be accurately measured using the number of scale teeth. The size of the scale teeth can be set according to the required precision. Alternatively, scale lines can be engraved on the upper part or outer circumference of the adjusting disc, with one unit graduation between two adjacent scale lines. During the rotation of the inner cylinder, the positional changes of the scale lines engraved on the adjusting disc are observed, allowing for a visual observation of the rotation angle of the inner cylinder.

[0046] The lower part of the rotating adjustment outer sleeve 231 is provided with an outwardly protruding ear 2310. The ear 2310 is provided with a through hole. The fastener 2311 passes through the through hole and connects to the corresponding connection hole of the fixing block 2 to fix the rotating adjustment outer sleeve 231 to the fixing block 2.

[0047] To facilitate observation of the rotational position of the inner rotating cylinder 230, preferably, an adjustment reference part 2312 is provided, which is disposed on the outer rotating cylinder. Regarding the method of setting scale teeth or marking scale lines on the outer periphery of the inner rotating cylinder 230, one arrangement of the adjustment reference part 2312 is to be located on the upper part of the outer rotating cylinder 231. A reference disk adapted to the adjustment disk is disposed on the upper part of the outer rotating cylinder 231, the size of the reference disk 2312 being equal to the size of the adjustment disk. The reference disk 2312 can also adopt the same marking method as the adjustment disk, and the size of the scale teeth of the reference disk is the same as the size of the scale teeth 2304 of the adjustment disk; or a reference line can be provided on the reference disk 2312; the scale of the reference disk 2312 can also be marked by marking one scale tooth to facilitate observation of the relative position movement of the scale teeth 2304 of the adjustment disk relative to the marked scale teeth of the reference disk. Preferably, the height of the inner rotating adjustment cylinder 230 and the outer rotating adjustment cylinder 231 of the rotating push mechanism 23 is higher than the narrow space of the lens mounting area. The spacious space at the top facilitates operation. After the lens angle is adjusted, the rotating push mechanism can continue to be fixedly installed on the fixing block 20, or it can be removed and reinstalled when the lens angle is adjusted next time.

[0048] The lens angle adjustment device also includes a flange connecting block 3, which is located above the angle adjustment part 11 of the flange 1 and the fixing block 2. The flange connecting block 3 connects the flange 1 and the fixing block 2, and is used to fix the position of the flange 1. The flange connecting block 3 includes a limiting hole 30, through which a fixing screw 31 passes to connect the flange connecting block to the fixing block 20. The direction of the limiting hole 30 should be consistent with the rotation direction of the flange 1. When the flange rotates, the limiting hole can move relative to the fixing screw 31.

[0049] Another embodiment of the lens angle adjustment device differs from the above embodiment in that the rotating push mechanism only includes a rotating adjustment inner cylinder. An adjustment reference part is provided on the outer periphery or top of the rotating adjustment inner cylinder. The adjustment reference part is provided with multiple unit scales. An adjustment reference part is provided on the fixed block corresponding to the position of the rotating adjustment inner cylinder. The adjustment reference part is provided with multiple unit scales the same as the adjustment reference part, or with marking lines, to facilitate observation of the rotation angle of the rotating adjustment inner cylinder.

[0050] The adjustment reference section may also have only a marking line, while the adjustment reference section has multiple unit scales. The rotation angle of the rotating adjustment inner cylinder is determined by the unit scale by which the marking line of the adjustment reference section moves relative to the adjustment reference section.

[0051] The adjustment reference part can also be fixed in other ways, and the rotation angle of the rotating cam can be obtained by observing the relative position change of the adjustment reference part with respect to the fixed adjustment reference part.

[0052] When adjusting the angle of the flange 1, the adjusting plate 2302 on the upper part of the rotating adjusting inner cylinder 230 is rotated according to the required adjustment angle of the lens, which drives the rotating cam 7 to rotate, adjusts the extension position of the second pusher 222, and pushes the angle adjusting part of the flange 1 to move. At the same time, the first pusher 210 on the other side generates a rebound force under the action of the compression elastic member 211, so that the first pusher 210 and the second pusher 222 are both close to the angle adjusting part 11 of the flange 1, limiting the position of the angle adjusting part 11. When the rotary adjusting inner cylinder 230 is rotated so that the second pusher 222 extends into the notch, the angle adjusting part 11 of the flange 1 rotates towards the first pusher, pushing the first pusher 210 to compress the elastic element 211. The elastic element 211 then pushes the first pusher 210 against the angle adjusting part 11. When the rotary adjusting inner cylinder 230 rotates in the opposite direction, a gap is created between the second pusher 222 and the rotary cam 220. The compressive force of the elastic element 211 pushes the first pusher 210 out, causing the angle adjusting part 11 of the flange 1 to move towards the second pusher 222, and pushing the second pusher 222 towards the rotary cam 220. The flange 1 is adjusted by rotating the rotary adjusting inner cylinder 230 in both directions.

[0053] Based on the required angle adjustment range of the lens and the distance from the end of the second pusher 222 abutting against the flange 1 to the lens flange adjustment center, the required moving distance of the second pusher 222 to achieve the required angle adjustment range is determined. The outer contour of the rotary camshaft seat 2200 is then determined based on the required moving distance of the second pusher 222. The outer contour of the rotary camshaft seat 2200 is divided into multiple equal-angle segments according to the rotation angle. The distance between the starting point of each segment and the center point of the rotary cam component, and the distance between the ending point and the center point of the rotary cam component, increase proportionally. The lens flange adjustment center is also the center position of the lens. The rotation center of the rotating adjusting inner cylinder 230 coincides with the rotation center of the rotating cam component 220. The rotation angle of the rotating adjusting inner cylinder 230 is the same as the rotation angle of the rotating cam component 220. The correspondence between the rotation angle of the rotating adjusting inner cylinder 230 and the rotation angle of the flange 1 is calculated using the outer contour line of the rotating camshaft seat 2200 and the distance from the end of the second pusher 222 abutting against the flange 1 to the adjustment center of the lens flange. Based on the required adjustment accuracy, the unit adjustment angle of the adjustment reference section 2303 on the adjustment dial is set. By adjusting the reference section 2312, the rotation scale is more intuitively observed, thereby obtaining the rotation angle of the lens flange 1.

[0054] By designing the outer contour of the rotating cam component, the lens angle can be adjusted with high precision. The lens angle adjustment device can be adjusted with a precision down to the micrometer level, which greatly meets the adjustment requirements of high-precision optical equipment.

[0055] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A lens angle adjustment device, comprising a flange and an adjustment mechanism, wherein the lens is fixed to the flange, characterized in that: The flange includes a lens mounting portion and an angle adjustment portion protruding from the lens mounting portion; the adjustment mechanism includes a fixing block, an elastic pushing mechanism, a rotating pushing mechanism, and a rotating pushing mechanism. The fixing block is provided with a recess for accommodating the angle adjustment portion of the flange. The elastic pushing mechanism and the rotating pushing mechanism are located on both sides of the recess and abut against the angle adjustment portion. The elastic pushing mechanism includes a first pushing member that elastically abuts against the angle adjustment portion. The rotating pushing mechanism includes a rotating cam and a second pushing member. The rotating cam rotates to push the second pushing member to extend and retract. The rotating pushing mechanism is connected to the rotating cam and drives the rotating cam to rotate.

2. The lens angle adjustment device according to claim 1, characterized in that: The rotating cam component includes a rotating shaft seat and a rotating drive rod. The rotating drive rod is disposed on the rotating shaft seat. The outer circumferential dimension of the rotating shaft seat gradually increases or decreases from one end to the other according to the direction of rotation. The rotating drive rod cooperates with the rotating push mechanism.

3. The lens angle adjustment device according to claim 2, characterized in that: The rotary cam component's rotary drive rod is also provided with a horizontal through drive hole for mounting a push rod. The push rod passes through the through drive hole, and both ends of the push rod protrude a certain distance from the through drive hole.

4. The lens angle adjustment device according to claim 3, characterized in that: The rotary pushing mechanism includes a rotary adjusting inner cylinder. The lower part of the rotary adjusting inner cylinder is provided with a slot for accommodating the upper part of the rotary driving rod. The slot wall is provided with an opening to accommodate the pushing rod. The upper end of the rotary adjusting inner cylinder is provided with an adjusting reference part to indicate the adjusting angle.

5. The lens angle adjustment device according to claim 4, characterized in that: The rotating push mechanism also includes a rotating adjustment outer sleeve, which is fixed to the fixing block. An adjustment reference part is provided at the upper end of the rotating adjustment outer sleeve, and the adjustment reference part is located above the adjustment reference part. The height of the rotating adjustment inner sleeve and the rotating adjustment outer sleeve of the rotating push mechanism is higher than the narrow space of the lens mounting area.

6. The lens angle adjustment device according to claim 3, characterized in that: The adjustment reference part is set on the adjustment disk of the rotating adjustment inner cylinder. The outer circumference of the adjustment disk is engraved with multiple scale teeth, each scale tooth being a unit scale, or the outer circumference of the adjustment disk is engraved with multiple scale lines, with a unit scale between two adjacent scale lines.

7. The lens angle adjustment device according to claim 6, characterized in that: The outer contour line of the rotating camshaft seat and the distance from the end of the second pusher that abuts against the flange to the adjustment center of the lens flange are used to calculate the correspondence between the rotation angle of the rotating adjustment inner cylinder and the rotation angle of the flange. Based on the required adjustment accuracy, the unit scale of the adjustment reference part on the adjustment plate is set.

8. The lens angle adjustment device according to claim 6, characterized in that: The upper part of the rotating adjusting outer sleeve is provided with a reference plate that is adapted to the adjusting plate of the rotating adjusting inner sleeve. The size of the reference plate is equal to the size of the adjusting plate. The outer periphery of the reference plate is provided with engraving teeth of the same size as the adjusting plate, or scale lines of the same size, or reference lines, or marking teeth.

9. The lens angle adjustment device according to claim 2, characterized in that: The outer contour of the rotating camshaft seat is divided into multiple chord segments with equal angles according to the rotation angle. The distance between the starting point of each chord segment and the center point of the rotating cam component and the distance between the ending point and the center point of the rotating cam component increase proportionally.

10. The lens angle adjustment device according to claim 1, characterized in that: The lens angle adjustment device is further provided with an adjustment reference part and an adjustment reference part, wherein the adjustment reference part and the adjustment target part are provided with the same multiple unit scales; or either the adjustment reference part or the adjustment reference part is provided with a marking line.

11. The lens angle adjustment device according to claim 1, characterized in that: The rotating pushing mechanism further includes a limiting member, which is fixed to the fixing block. The limiting member includes a hole-shaft mating part, and the rotating cam includes a hole-shaft mating inner hole. The hole-shaft mating part of the limiting member is inserted into the hole-shaft mating inner hole of the rotating cam to perform a hole-shaft mating connection.

12. The lens angle adjustment device according to claim 11, characterized in that: The hole-shaft mating part further includes a limiting groove, and the rotating shaft seat of the rotating cam component further includes a limiting hole. The limiting rod is inserted into the limiting hole of the rotating cam component and protrudes into the limiting groove of the limiting component.

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