Lens focusing platform

Abstract

This utility model discloses a lens focusing platform, which includes a base unit, a focusing unit, and at least one target unit. The base unit includes a base plate; the focusing unit includes a support platform and a frame fixing seat, the support platform being disposed on the base plate, and the frame fixing seat being disposed on the support platform, wherein the lens frame can be assembled into the frame fixing seat; the target unit includes a target seat and a target plate, the target seat being disposed on the base plate, and the target plate being mounted on the target seat, wherein the side of the target plate facing the lens has a mark. Compared with the prior art, the lens focusing platform provided by this utility model can fix the lens frame on the frame fixing seat, eliminating errors caused by hand shaking, improving focusing accuracy, and saving focusing time.

Description

Technical Field

[0001] This utility model relates to the field of lens focusing technology, specifically to a lens focusing platform. Background Technology

[0002] The handheld laser scanner mainly consists of a frame, lens, camera, lens light, control board, and housing. It uses binocular measurement to extract key points from the object's surface, constructing 3D data from point clouds. During assembly, after the lens is installed, manual focusing is required within a certain working range. The procedure involves aligning the lens with the focusing paper, starting the scanner and its accompanying control software, slowly rotating the lens, and observing the blur-sharp-blur process of the target image in the preview window to initially determine the approximate "sharp" position. Near this roughly determined "sharp" position, the focusing ring is rotated extremely slowly and subtly back and forth. Through repeated comparisons, the precise point that provides the sharpest edges and most defined contours of the target object is found. Finally, the lens is secured with adhesive.

[0003] This focusing method is highly dependent on the operator's skills and experience. Focusing errors directly lead to a loss of accuracy, unstable data quality, and high accuracy risk. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a lens focusing platform to solve the technical problem that handheld laser scanners rely on manual operation for focusing, which is prone to large errors.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a lens focusing platform, comprising: a base unit, a focusing unit, and at least one target unit. The base unit includes a base plate; The focusing unit includes a support platform and a frame fixing base. The support platform is disposed on the base plate, and the frame fixing base is disposed on the support platform. The frame of the lens can be assembled into the frame fixing base. The target unit includes a target holder and a target plate. The target holder is disposed on a base plate, and the target plate is mounted on the target holder. The side of the target plate facing the lens has a mark.

[0006] In some embodiments, a plurality of target units are arranged sequentially along the base plate, and the height of the target plate of each target unit gradually increases in the direction away from the focusing unit.

[0007] In some embodiments, the support platform includes a support platform base plate and a skeleton support frame, the support platform base plate is disposed on the base plate, the skeleton support frame is disposed on the support platform base plate, and the skeleton fixing seat is disposed on the skeleton support frame.

[0008] In some embodiments, the focusing unit further includes a lamp plate fixing plate and a lens lamp. The lamp plate fixing plate is fixedly connected to the side of the frame support frame facing the target unit. The lens lamp is disposed on the lamp plate fixing plate and is circular and arranged facing the target unit.

[0009] In some embodiments, a light-blocking plate is also included, which is disposed on the base plate and located on the side of the target unit away from the focusing unit.

[0010] In some embodiments, the lens light includes a magnetic base, a telescopic rod, and a lamp ring. The magnetic base is magnetically attached to the lamp plate fixing plate, and the lower end of the telescopic rod is connected to the magnetic base, while its upper end is connected to the lamp ring.

[0011] In some embodiments, the focusing unit further includes a control board support frame and a control board fixing seat, wherein the control board support frame is fixedly mounted on the base plate of the support platform, and the control board fixing seat is disposed on the control board support frame.

[0012] In some embodiments, the frame mounting base includes a frame placement box, a frame pressure plate, and a locking device. The frame placement box has a placement groove through which the lens frame passes. One side of the frame pressure plate is hinged to the frame placement box, and the other side is detachably connected to the frame placement box via the locking device.

[0013] In some embodiments, the target holder includes a target frame, a vertical track, a placement block, and a limiting member. The target frame is disposed on the base, the vertical track is disposed on the target frame, the placement block is slidably connected to the vertical track, the limiting member can restrict the position of the placement block on the vertical track, and the target plate is mounted on the placement block.

[0014] In some embodiments, the base unit further includes a slide rail and a plurality of sliders, the slide rail being disposed on the base plate, the sliders being slidably connected to the slide rail, and the support platform and the target seat being fixedly connected to different sliders; the base plate also has a scale distributed along the slide rail.

[0015] Compared with the prior art, the lens focusing platform provided by this utility model can fix the lens frame on the frame fixing base, eliminate the error caused by hand shaking, improve focusing accuracy, and save focusing time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the lens focusing platform provided in this embodiment of the utility model; Figure 2 yes Figure 1 Schematic diagram of the middle base unit; Figure 3 yes Figure 1 A schematic diagram of the central focusing unit; Figure 4 This is a schematic diagram of the skeleton support frame in another embodiment; Figure 5 yes Figure 3 A schematic diagram of the structure of the central frame fixing base in the open state; Figure 6 yes Figure 3 A schematic diagram of the structure of the central frame fixing seat in the closed state; Figure 7 yes Figure 3 A schematic diagram of the structure of the mid-lens lamp; Figure 8 yes Figure 1 A schematic diagram of the target unit. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Figure 1 This is a schematic diagram of the lens focusing platform provided in an embodiment of the present invention. The lens focusing platform includes a base unit 1, a focusing unit 2, and at least one target unit 3.

[0019] The base unit 1 includes a base plate 11.

[0020] The focusing unit 2 includes a support platform 21 and a frame fixing seat 22. The support platform 21 is set on the base plate 11, and the frame fixing seat 22 is set on the support platform 21. The frame 8 of the lens 9 can be assembled in the frame fixing seat 22.

[0021] The target unit 3 includes a target holder 31 and a target plate 32. The target holder 31 is disposed on the base plate 11, and the target plate 32 is mounted on the target holder 31. The side of the target plate 32 facing the lens 9 has markings.

[0022] Please see Figure 2 , Figure 2 yes Figure 1A schematic diagram of the base unit is shown. In some embodiments, the base unit 1 further includes a slide rail 12 and a plurality of sliders 13. The slide rail 12 is disposed on the base plate 11, and the sliders 13 are slidably connected to the slide rail 12. The support platform 21 and the target seat 31 are respectively fixedly connected to different sliders 12, thereby sliding on the slide rail 12 to adjust their distance from the lens 9. The base plate 11 also has a scale distributed along the slide rail 12 for measuring the distance from the lens.

[0023] Please see Figure 3 , Figure 3 yes Figure 1 A schematic diagram of the focusing unit. In some embodiments, the support platform 21 includes a support platform base plate 211 and a frame support frame 212. The support platform base plate 211 is disposed on the base plate 11, and when a slide rail 12 is provided, it is disposed on the slider 13. The frame support frame 212 is disposed on the support platform base plate 211, and the frame fixing seat 22 is disposed on the frame support frame 212. In this embodiment, the frame support frame 212 is fixed.

[0024] In other embodiments, see Figure 4 The frame support 212a can also adopt a lifting structure to adjust the height of the lens 9. This application does not limit the specific structure for implementing the lifting function, as long as the lifting function can be achieved.

[0025] Please see Figure 5 and Figure 6 , Figure 5 yes Figure 3 A schematic diagram of the structure of the central frame fixing base in the open state; Figure 6 yes Figure 3 A schematic diagram of the structure when the central frame fixing seat is in the closed state.

[0026] In some embodiments, the frame mounting base 22 includes a frame placement box 221, a frame pressure plate 222, and a locking device 223. The frame placement box 221 has a placement groove 221a through which the lens frame 8 passes. One side of the frame pressure plate 222 is hinged to the frame placement box 221, and the other side is detachably connected to the frame placement box 221 via the locking device 223. In this embodiment, the locking device 223 is a bolt knob. In other embodiments, other structural forms can also be used, as long as the fixing effect can be achieved.

[0027] Please see again Figure 3 In some embodiments, the focusing unit 2 further includes a lamp plate fixing plate 23 and a lens lamp 24. The lamp plate fixing plate 23 is fixedly connected to the side of the frame support frame 212 facing the target unit 3. The lens lamp 24 is disposed on the lamp plate fixing plate 23. The lens lamp 24 is circular and arranged facing the target unit 3, and is used to illuminate the target plate 32 during focusing to provide supplementary lighting.

[0028] Please see Figure 7 , Figure 7 yes Figure 3 A schematic diagram of the lens light structure. In some embodiments, the lens light 24 includes a magnetic base 241, a telescopic rod 242, and a lamp ring 243. The lamp plate fixing plate 23 is made of iron. The magnetic base 241 is magnetically attached to the lamp plate fixing plate 23, which provides both a certain fixing effect and allows for easy adjustment of its position. The lower end of the telescopic rod 242 is connected to the magnetic base 241, and the upper end is connected to the lamp ring 243, used to adjust the height of the lamp ring 243. This application does not limit the specific structure of the telescopic rod 242; it can be a screw-tightening form, a double-tube sleeve form, etc., as long as it has a telescopic function. The lamp ring 243 is annular, with a ring of small LED beads on it for supplementary lighting. During focusing, the lamp ring 243 is positioned against the lens 9, and the lens 9 photographs the marks on the target plate 32 through the hole in the middle of the lamp ring 243.

[0029] Please see again Figure 3 In some embodiments, the focusing unit 2 further includes a control board support frame 25 and a control board mounting base 26. The control board support frame 25 is fixed to the base plate 211 of the support platform, and the control board mounting base 26 is disposed on the control board support frame 25. The control board mounting base 26 is used to hold the control board. The lens 9 is connected to a computer via the control board, and the computer has dedicated focusing software installed. This focusing software can convert the image captured by the camera 9 into a numerical value. When the operator rotates the focusing ring, the numerical value changes accordingly. The software also has a standard range; when the value is adjusted to this standard range, it indicates that focusing is complete. Using software to replace the human eye in determining focusing sharpness can avoid differences in product accuracy caused by operator differences, thus improving the stability of product quality.

[0030] In some embodiments, multiple target units 3 are arranged sequentially along the base plate, and the height of the target plate 32 of each target unit 3 gradually increases in the direction away from the focusing unit 2. By setting multiple target units 3, such as setting three target units 3 for near, middle and far distance, the accuracy of identifying multiple marker points at one time is improved, avoiding the need for operators to repeatedly adjust the distance between the frame and the target plate 32 during manual focusing, saving focusing time and improving product assembly efficiency.

[0031] Please see Figure 8 , Figure 8 yes Figure 1A schematic diagram of the target unit. In some embodiments, the target holder 31 includes a target frame 311, a vertical track 312, a placement block 313, and a limiting member 314. The target frame 311 is disposed on the base 11, and when a slide rail 12 is provided, it is disposed on the slider 13. The vertical track 312 is disposed on the target frame 311, the placement block 313 is slidably connected to the vertical track 312, and the limiting member 314 can limit the position of the placement block 313 on the vertical track 312. A row of connecting holes is provided on the target frame 311 along the vertical track 312, and the limiting member 314 is detachably connected to the connecting holes and abuts against the bottom of the placement block 313, thereby adjusting the position of the placement block 313 on the vertical track 312. The target plate 32 is mounted on the placement block 313.

[0032] See you again Figure 1 The focusing platform of this lens also includes a light-blocking plate 4, which is mounted on the base plate 11 and, when a slide rail 12 is provided, on the slider 13. The light-blocking plate 4 is located on the side of the target unit 3 away from the focusing unit 2, and is used to form a monochrome background behind the target plate 32 for better focusing.

[0033] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A lens focusing platform, characterized in that, include: A base unit, which includes a base plate; A focusing unit includes a support platform and a frame fixing seat. The support platform is disposed on the base plate, and the frame fixing seat is disposed on the support platform. The frame of the lens can be assembled into the frame fixing seat. At least one target unit includes a target holder and a target plate, the target holder being disposed on a base plate and the target plate being mounted on the target holder, the target plate having a mark on the side facing the lens.

2. The lens focusing platform according to claim 1, characterized in that, Multiple target units are arranged sequentially along the base plate, and the height of the target plate of each target unit gradually increases in the direction away from the focusing unit.

3. The lens focusing platform according to claim 1, characterized in that, The support platform includes a support platform base plate and a skeleton support frame. The support platform base plate is disposed on the base plate, the skeleton support frame is disposed on the support platform base plate, and the skeleton fixing seat is disposed on the skeleton support frame.

4. The lens focusing platform according to claim 3, characterized in that, The focusing unit also includes a lamp plate fixing plate and a lens lamp. The lamp plate fixing plate is fixedly connected to the side of the frame support frame facing the target unit. The lens lamp is disposed on the lamp plate fixing plate and is circular and arranged facing the target unit.

5. The lens focusing platform according to claim 4, characterized in that, It also includes a light-blocking plate, which is disposed on the base plate and located on the side of the target unit away from the focusing unit.

6. The lens focusing platform according to claim 4, characterized in that, The lens light includes a magnetic base, a telescopic rod, and a lamp ring. The magnetic base is magnetically attached to the lamp plate fixing plate. The lower end of the telescopic rod is connected to the magnetic base, and the upper end is connected to the lamp ring.

7. The lens focusing platform according to claim 3, characterized in that, The focusing unit also includes a control board support frame and a control board fixing seat. The control board support frame is fixed on the base plate of the support platform, and the control board fixing seat is disposed on the control board support frame.

8. The lens focusing platform according to claim 1, characterized in that, The frame mounting base includes a frame placement box, a frame pressure plate, and a locking device. The frame placement box has a placement groove for the lens frame to pass through. One side of the frame pressure plate is hinged to the frame placement box, and the other side is detachably connected to the frame placement box via the locking device.

9. The lens focusing platform according to claim 1, characterized in that, The target holder includes a target frame, a vertical track, a placement block, and a limiting member. The target frame is disposed on the base, the vertical track is disposed on the target frame, the placement block is slidably connected to the vertical track, the limiting member can restrict the position of the placement block on the vertical track, and the target plate is mounted on the placement block.

10. The lens focusing platform according to claim 1, characterized in that, The base unit also includes a slide rail and multiple sliders. The slide rail is disposed on the base plate, and the sliders are slidably connected to the slide rail. The support platform and the target seat are fixedly connected to different sliders. The base plate also has a scale distributed along the slide rail.

Images