Lens angle adjusting method and adjusting device
The columnar limiting member is tangent to the arc-shaped outer edge of the lens mounting flange, and the rotation center position is determined, and the lens angle is adjusted by rolling friction, which solves the problem of low rotation center movement and adjustment accuracy in the prior art, and realizes the Efficient and precise lens angle adjustment.
Patent Information
- Application Number
- CN202311033353.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-16
- Publication Date
- 2025-02-21
AI Technical Summary
The existing lens angle adjustment methods have problems such as rotation center movement, low adjustment accuracy, easy jamming and high friction, resulting in unsmooth adjustment and time-consuming and labor-intensive adjustment.
By using a columnar stopper to tangent with the arc-shaped outer edge of the mounting flange, the center of rotation of the lens is determined, and the lens angle is adjusted by rolling friction, and further rotation is avoided after being fixed at a suitable angle.
The lens rotation center is unchanged, the adjustment accuracy and efficiency are improved, friction resistance is reduced, and the angle adjustment is smoother, more precise and faster.
Smart Images
Figure CN119493338A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a lens adjustment method and an adjustment device, in particular to a lens angle adjustment method and an adjustment device. Background Art
[0002] The laser direct writing system, also known as the image direct projection system, can be applied to the research and development and production of semiconductors, PCBs and planar imaging. Its principle is to use a graphic generator to replace the traditional mask technology to directly expose the computer's graphic data to the product, which can save costs and improve efficiency. The graphic generator can use a digital micromirror device (DMD). The digital micromirror device (DMD) is a micro-electromechanical system with electronic input and optical output, including an array of micro-mirrors with two tilt angles. In practical applications, the light source is projected to the digital micromirror device after the uniform light effect. The micro-mirrors in the digital micromirror device have 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 outside the subsequent optical system, which corresponds to the closing of the digital circuit. The desired pattern is formed by controlling the tilt angle of the micro-mirror in the digital micro-mirror device. Since the size of the micro-mirrors and the spacing between adjacent micro-mirrors in the digital micro-mirror device are fixed, the resolution of the product is limited. In order to improve the resolution and obtain finer lines, the digital micro-mirror device is usually tilted relative to the scanning direction. The ideal tilt angle of the digital micro-mirror device is obtained by calculation. In order to obtain the ideal tilt angle, the angle of the lens is usually adjusted during the installation and use of the lens equipped with the digital micro-mirror device, thereby achieving the purpose of adjusting the tilt angle of the digital micro-mirror device. The current method of adjusting the lens angle uses a limiter set in the hole to limit the lens position, and then uses a bolt to adjust the angle. Due to processing and installation errors and other reasons, the exposure lens angle adjustment process often causes the lens rotation center to move, and the adjustment accuracy is low. At the same time, hard contact during the lens rotation process can easily cause the lens to get stuck and unable to adjust. During the rotation process, there is sliding friction, the friction is large, the angle adjustment is not smooth, and it is time-consuming and laborious. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a lens angle adjustment method and an adjustment device to prevent the lens rotation center from moving.
[0004] In order to solve the above problem, a lens angle adjustment method is provided, wherein the mounting flange of the lens abuts against a limit member, the limit member includes at least two rotating members, the rotating members are cylindrical and tangent to the arc-shaped outer edge of the mounting flange, the center position of the lens rotation is determined by the rotating members and the arc-shaped outer edge, the rotation of the mounting flange is controlled by the adjusting member, during the rotation of the mounting flange, rolling friction is generated between the arc-shaped outer edge of the mounting flange and the rotating members, and when the mounting flange rotates to an appropriate angle, the mounting flange is fixed to the base.
[0005] Furthermore, the mounting flange is maintained against the limiting member by a push member, and the push member is located on the opposite side of the limiting member and elastically pushes against the mounting flange.
[0006] Furthermore, the mounting flange is maintained against the limiting member by an adjusting member, and the pushing member is located on the opposite side of the limiting member.
[0007] A lens angle adjustment device comprises a limit member and an adjustment member, wherein the limit member comprises at least two rotating members, wherein the rotating members are close to the arc-shaped outer edge of the mounting flange, and the adjustment member is against the angle adjustment portion of the mounting flange, wherein the rotating member is cylindrical and comprises a rotating shaft and a rotating body rotating around the rotating shaft, and the rotating body is tangent to the arc-shaped outer edge.
[0008] Furthermore, it also includes a push member, which is located on the opposite side of the limiting member and pushes the mounting flange against the limiting member.
[0009] Furthermore, the pushing member includes a pushing mounting block, a sliding block and an elastic member, the pushing mounting block is fixed to the base, the pushing mounting block has an inwardly recessed accommodating opening on the side adjacent to the mounting flange, the sliding block is installed in the accommodating opening, adjacent to the mounting flange, the elastic member is located on the inner side of the accommodating opening, one end of the elastic member abuts against the mounting flange, and the other end abuts against the pushing mounting block, or the elastic member is connected to an elastic force adjustment member installed on the pushing mounting block.
[0010] Furthermore, the adjusting member includes an adjusting mounting block, a pushing member and an adjusting fixing member, the pushing member and the adjusting fixing member are installed on the adjusting mounting block, the adjusting mounting block has a recess for accommodating an angle adjustment portion of a mounting flange, both sides of the recess are pushing member mounting portions, the pushing member is arranged from both sides to the middle recess, and presses against the angle adjustment degree of the mounting flange.
[0011] Furthermore, the adjusting member includes an adjusting mounting member and a pushing member, the adjusting mounting member is in the shape of a strip and is adjacent to the linear outer edge of the mounting flange, the pushing member is installed on the adjusting mounting member, one end of the pushing member is against the linear outer edge of the mounting flange, and the other end is exposed from the adjusting mounting member, and at least two pushing members are arranged at intervals, each of which is close to the edge of the linear outer edge.
[0012] Furthermore, the pushing member is an adjusting bolt or a micrometer.
[0013] Furthermore, the rotating member is a bearing, and there are continuous arc-shaped outer edges between the rotating members, or each rotating member corresponds to a section of an arc-shaped outer edge, and the corresponding arc-shaped outer edges are symmetrically arranged.
[0014] Compared with the prior art, the present invention determines the rotation center position of the lens by making the cylindrical stopper tangent to the arc-shaped outer edge of the mounting flange. The rotation center does not move during the rotation of the exposure lens, so there will be no stuck phenomenon and the angle adjustment accuracy and efficiency of the exposure lens will be improved. The lens angle adjustment is achieved by the rolling friction between the lens mounting flange and the rotating member, which greatly reduces the friction resistance during the rotation of the lens, making the angle adjustment smoother and accurately and quickly adjusting the exposure lens angle. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic diagram of an example of a lens angle adjustment method.
[0016] Figure 2 It is a top view of an embodiment of a lens angle adjustment device.
[0017] Figure 3 It is a schematic diagram of a push member of a lens angle adjustment device.
[0018] Figure 4 It is a side view of the lens angle adjustment device.
[0019] Figure 5 It is a top view of another embodiment of the lens angle adjustment device. Implementation
[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described below by means of specific embodiments shown in the accompanying drawings.
[0021] pass Figure 1 The lens angle adjustment method is described in the embodiment of the present invention. The lens 1 and the adjusting device 2 for adjusting the lens angle are both mounted on a base. The lens includes a mounting flange 10, through which the lens is fixed to the base.
[0022] Before adjusting the lens angle, first place the lens at the installation position of the base, pre-fix the mounting flange 10, and preliminarily install the fixing member 11 to the base through the limiting hole 12 of the mounting flange. There is a gap between the tops of the fixing members 11. The size of the limiting hole 12 is larger than the size of the fixing member 11. During the rotation of the mounting flange 10, the fixing member 11 has no contact with the mounting flange 10, so as to prevent the mounting flange 10 from getting stuck and unable to move during the rotation. The fixing member can be a fixing screw.
[0023] The mounting flange 10 is provided with an arc-shaped outer edge 13, the arc-shaped outer edge 13 abuts against a stopper fixed to the base, the stopper includes at least two rotating members 14, the rotating members 14 are cylindrical and tangent to the arc-shaped outer edge 13, and the center position 15 of the lens rotation is determined by the rotating members 14 and the arc-shaped outer edge 13. Preferably, the rotating members 14 are arranged at intervals and located at both ends of the arc-shaped outer edge 13, so as to ensure that the center point of the arc-shaped outer edge 13 is always located between the rotating members 14 during the rotation of the lens flange 10. The rotating member can rotate around the axis, and during the process of adjusting the lens angle, it rotates with the mounting flange to form rotational friction and reduce friction.
[0024] When adjusting the lens angle, first push the mounting flange 10 so that the mounting flange 10 abuts against the stopper to prevent the mounting flange from being separated from the stopper during rotation. Push the mounting flange 10 to rotate, and the stopper and the mounting flange 10 rotate relative to each other. After adjusting to the desired angle, fix the mounting flange to the base. During the lens angle adjustment process, the mounting flange 10 always abuts against the stopper, and the arc-shaped outer edge of the stopper and the mounting flange jointly ensure that the center position of the lens rotation remains unchanged.
[0025] When adjusting the lens angle, the mounting flange is rotated by adjusting the adjusting bolt 16 or the micrometer to push the angle adjustment part 17 of the mounting flange. The distance the mounting flange moves when the adjusting bolt 16 or the micrometer rotates one circle is calculated based on the pitch of the adjusting bolt 16 or the micrometer, and the rotation angle of the mounting flange is calculated, and then the rotation angle of the mounting flange is accurately adjusted by the adjusting bolt or the micrometer.
[0026] like Figure 2-Figure 4 As shown, the lens angle adjustment device includes a limit member 20 and an adjustment member 21, and the limit member 20 and the adjustment member 21 are installed on a base 22. The limit member 20 is used to limit the position of the lens mounting flange 23 and fix the center of rotation of the lens, and the adjustment member 21 is used to adjust the installation angle of the mounting flange 23.
[0027] The stopper 20 includes at least two rotating members 200, the rotating members 200 are close to the arc-shaped outer edge 230 of the mounting flange, and there is a gap between the rotating members 200, preferably, they are located at both ends of the arc-shaped outer edge 230. The rotating member 200 includes a fixed shaft and a rotating body sleeved on the fixed shaft and rotating around the fixed shaft. The rotating member 200 can directly use a bearing.
[0028] The adjusting member 21 includes an adjusting mounting block 210, a pushing member 211 and an adjusting fixing member 212. The pushing member 211 and the adjusting fixing member 212 are installed on the adjusting mounting block 210. The adjusting mounting block 210 has a notch 213 for accommodating the angle adjustment portion 231 of the mounting flange. The two sides of the notch 213 are pushing member mounting portions 214. The pushing member 211 is arranged from both sides to the middle notch 213 to press against the angle adjustment degree of the mounting flange 23. The adjusting fixing member 212 is installed on the adjusting mounting block 210 perpendicular to the pushing member 211, and is used to fix the pushing member 211 after the adjustment is completed.
[0029] In order to prevent the mounting flange 23 from being separated from the stopper 20 during the lens angle adjustment process, the lens angle adjustment device further includes a push-pull member 24, which includes a push-pull mounting block 240, a sliding block 241 and an elastic member 242. The push-pull mounting block 240 is fixed to the base 22. The push-pull mounting block 240 has an inwardly recessed receiving opening 243 on one side adjacent to the mounting flange 23. The sliding block 241 is installed in the receiving opening 243 and adjacent to the mounting flange 23. The elastic member 242 is located inside the receiving opening 243. One end of the elastic member 242 abuts against the sliding block 241, and the other end is connected to the elastic force adjustment member 244. By adjusting the elastic force adjustment member 244, the sliding block 241 is pressed against the mounting flange 23. The elastic member 242 adjusts the position of the sliding block 241 during the movement of the mounting flange 23, so that the sliding block 241 maintains thrust on the mounting flange 23. The sliding block 241 includes a sliding seat 245 and a rotating member 246. The rotating member 246 is installed on the sliding seat 245. The rotating member 245 is a component that rotates around an axis and can be the same component as the rotating member, such as a bearing. The sliding block 241 abuts against the mounting flange 23 through the rotating member 245. When the mounting flange 23 rotates, the rotating member 245 rotates relative to the mounting flange 23 to reduce friction.
[0030] The mounting flange 23 is provided with a plurality of through holes 230, and the through holes are arc-shaped and correspond to the rotation path of the mounting flange 23. The fixing part 231 of the mounting flange is fixed to the base 22 through the through holes 230. The aperture of the through holes 230 is larger than the outer circumference of the fixing part 231. During the movement of the mounting flange 23, the fixing part 231 does not contact the through holes 230.
[0031] like Figure 5 As shown in the figure, another embodiment of the lens angle adjustment device is shown, the lens adjustment device comprises a stopper 30 and an adjustment member 31. The stopper 30 adopts at least two rotating members to be close to the arc-shaped outer edge 32 of the lens mounting flange, and the adjustment member 31 is located on the opposite side of the stopper. The adjustment member 31 comprises an adjustment mounting member 310 and a push member 311. The adjustment mounting member 310 is in a strip shape and is adjacent to the linear outer edge 33 of the mounting flange. The push member 311 is installed on the adjustment mounting member 310, one end of which is against the linear outer edge 33 of the mounting flange and the other end is exposed from the adjustment mounting member 310, so as to facilitate the operation of the adjustment member. Two push members 311 are arranged corresponding to one mounting flange, which are located at the two ends of the linear outer edge 33 of the mounting flange to adjust the rotation of the exposure lens from two directions.
[0032] The lens angle adjustment device also includes a rotating part fixing plate 300, which is used to fix the rotating part. The rotating part fixing plate 300 is designed to correspond to the outer edge of the mounting flange. The center of the circular arc outer edge of the lens flange corresponding to the rotating part fixing plate 300 coincides with the center of the circular arc outer edge of the lens flange to achieve a coaxial state, thereby limiting the tangency of the rotating part and the circular arc outer edge of the lens flange.
[0033] Corresponding to the lens angle adjustment device, the mounting flange includes at least one arc-shaped outer edge, or the arc-shaped outer edges are symmetrically arranged.
Claims
1. A lens angle adjustment method, characterized in that: The mounting flange of the lens abuts against a limit member, and the limit member includes at least two rotating members, wherein the rotating member is cylindrical and tangent to the arc-shaped outer edge of the mounting flange, and the center position of the lens rotation is determined by the rotating member and the arc-shaped outer edge, and the rotation of the mounting flange is controlled by the adjusting member. During the rotation of the mounting flange, rolling friction is generated between the arc-shaped outer edge of the mounting flange and the rotating member, and when the mounting flange rotates to an appropriate angle, the mounting flange is fixed to the base.
2. The lens angle adjustment method according to claim 1, characterized in that: The mounting flange is held against the limiting member by a push member, and the push member is located at the opposite side of the limiting member and elastically pushes against the mounting flange.
3. The lens angle adjustment method according to claim 1, characterized in that: The mounting flange is maintained against the limiting member by an adjusting member, and the pushing member is located at an opposite side of the limiting member.
4. A lens angle adjustment device, characterized in that: It includes a limit member and an adjusting member, the limit member includes at least two rotating members, the rotating member is close to the arc-shaped outer edge of the mounting flange, the adjusting member is against the angle adjustment part of the mounting flange, the rotating member is cylindrical, includes a rotating axis and a rotating body rotating around the rotating axis, and the rotating body is tangent to the arc-shaped outer edge.
5. The lens angle adjustment device according to claim 4, characterized in that: It also includes a push-pull member, which is located at the opposite side of the limiting member and pushes the mounting flange against the limiting member.
6. The lens angle adjustment device according to claim 5, characterized in that: The pushing member includes a pushing mounting block, a sliding block and an elastic member. The pushing mounting block is fixed to a base. The pushing mounting block has an inwardly recessed receiving opening on one side adjacent to the mounting flange. The sliding block is installed in the receiving opening, adjacent to the mounting flange. The elastic member is located on the inner side of the receiving opening. One end of the elastic member abuts against the mounting flange, and the other end abuts against the pushing mounting block, or the elastic member is connected to an elastic force adjustment member installed on the pushing mounting block.
7. The lens angle adjustment device according to claim 6, characterized in that: The adjusting member includes an adjusting mounting block, a pushing member and an adjusting fixing member, wherein the pushing member and the adjusting fixing member are installed on the adjusting mounting block, and the adjusting mounting block has a recess for accommodating an angle adjustment portion of a mounting flange, and both sides of the recess are pushing member mounting portions, and the pushing member is arranged from both sides to the middle recess to press against the angle adjustment degree of the mounting flange.
8. The lens angle adjustment device according to claim 4, characterized in that: The adjusting member includes an adjusting mounting member and a pushing member. The adjusting mounting member is in a strip shape and is adjacent to the linear outer edge of the mounting flange. The pushing member is installed on the adjusting mounting member, with one end abutting against the linear outer edge of the mounting flange and the other end exposed from the adjusting mounting member. At least two pushing members are arranged at intervals and are respectively close to the edges of the linear outer edge.
9. The lens angle adjustment device according to claim 7 or 8, characterized in that: The pushing member is an adjusting bolt or a micrometer.
10. The lens angle adjustment device according to claim 4, characterized in that: The rotating member is a bearing, and there are continuous arc-shaped outer edges between the rotating members, or each rotating member corresponds to a section of the arc-shaped outer edge, and the corresponding arc-shaped outer edges are symmetrically arranged.