Fresnel lens refraction angle detector
By using a linear slide table and a dual-lens mount lifting assembly in the Fresnel lens refractive angle detection machine, the automatic lifting and detection of the lens is achieved by using a servo motor and a laser sensor, which solves the problem of time-consuming lens replacement in the prior art. Improve detection efficiency.
Patent Information
- Application Number
- CN202420986997.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing Fresnel lens refractive angle detector needs to remove and install another lens after detecting one lens, which causes time-consuming operation and affects the detection efficiency.
A Fresnel lens refractive angle detector is designed, using a linear slide table and a dual-lens mount lifting assembly, and the lens is automatically lifted and detected by a servo motor and laser sensor, allowing the replacement of another lens during the detection of one lens. lens.
Save time to replace the lens, improve detection efficiency, and make the detection process more efficient.
Smart Images
Figure CN222166518U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lens detection, and in particular relates to a Fresnel lens refraction angle detection machine. Background Art
[0002] The Fresnel lens looks like a piece of glass with countless concentric circular patterns (i.e., Fresnel bands), but it can achieve the effect of a convex lens. If the projection light source is parallel light, the brightness of the image can be kept consistent after convergence and projection. It is mostly used in occasions where the precision requirement is not very high, such as slide projectors, film magnifiers, infrared detectors, etc. At present, the refraction angle of the Fresnel lens is often detected by a lens refraction angle detection machine. The existing Fresnel lens refraction angle measurement tooling includes a base plate, a light receiving plate is arranged on the left side of the base plate, and a high reflective mirror is arranged on the rear side of the base plate; a first mounting frame for mounting the Fresnel lens is arranged on the right side of the base plate, and the first mounting frame is driven by an adjustment component. When the Fresnel lens refraction angle detection device is used, the lens is mounted on the mounting frame, and then the position of the lens is adjusted by the adjustment drive component, and the refraction angle of the lens is detected by laser. However, when it is used, after detecting one lens, the lens needs to be removed and another lens needs to be installed, and then the detection is performed. The operation is relatively time-consuming, which affects the detection efficiency. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a Fresnel lens refraction angle detection machine, which can replace another lens during the detection process of one lens, saving the time of replacing the lens and improving the detection efficiency.
[0004] The utility model is realized by the following technical solutions:
[0005] A Fresnel lens refraction angle detection machine comprises a base, a linear slide is installed on the upper right front side of the base, a camera mounting frame is arranged on the rear side of the linear slide, the camera mounting frame is fixed to the base, and an industrial camera is installed on the left side of the camera mounting frame, a transmitter mounting frame is fixedly installed on the upper left front side of the base, a laser transmitter is installed on the rear side of the transmitter mounting frame, a light receiving plate is installed on the upper left side of the base, and a high reflector is installed on the upper rear side of the base, characterized in that a dual-lens mounting seat lifting assembly is installed on the linear slide, the dual-lens mounting seat lifting assembly comprises a mounting frame, a casing is fixedly installed on the left side of the mounting frame, a lead screw is connected to the internal bearing of the casing, a servo motor is installed on the upper part of the casing, a lifting seat is installed on the upper and lower sides of the middle part of the lead screw through ball nuts respectively, a lens mounting seat is installed on the left side of each lifting seat, a connecting piece is installed on the middle front side of the mounting frame, and a laser sensor is installed on the connecting piece.
[0006] Preferably, the output shaft of the servo motor is connected to the upper end coupling of the screw rod.
[0007] Preferably, the lifting seat and the casing are slidably arranged.
[0008] Compared with the prior art, the beneficial effects of the utility model are:
[0009] 1. In the utility model, the arrangement of the mounting frame, housing, screw, lifting seat, ball nut, servo motor, lens mounting seat, connector, and laser sensor is conducive to setting up two sets of lenses, saving time for replacing lenses and improving detection efficiency.
[0010] 2. In the utility model, the arrangement of the linear slide, camera mounting frame, industrial camera, transmitter mounting frame, laser transmitter, light receiving plate, and high reflector is conducive to detecting the angle of the Fresnel lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] Figure 2 It is a schematic diagram of the exploded structure of the lifting assembly of the double lens mounting seat of the utility model.
[0013] In the figure:
[0014] 1. Base; 2. Linear slide; 3. Camera mounting bracket; 4. Industrial camera; 5. Transmitter mounting bracket; 6. Laser transmitter; 7. Light receiving plate; 8. High reflector; 9. Dual lens mounting seat lifting assembly; 91. Mounting bracket; 92. Housing; 93. Screw rod; 94. Lifting seat; 95. Ball nut; 96. Servo motor; 97. Lens mounting seat; 98. Connector; 99. Laser sensor. DETAILED DESCRIPTION
[0015] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 As shown, a Fresnel lens refraction angle detection machine includes a base 1, a linear slide 2 is installed on the upper right front side of the base 1, a camera mounting frame 3 is arranged on the rear side of the linear slide 2, the camera mounting frame 3 is fixed to the base 1, and an industrial camera 4 is installed on the left side of the camera mounting frame 3, a transmitter mounting frame 5 is fixedly installed on the upper left front side of the base 1, a laser transmitter 6 is installed on the rear side of the transmitter mounting frame 5, a light receiving plate 7 is installed on the upper left side of the base 1, a high reflector 8 is installed on the upper rear side of the base 1, and a double lens mounting seat lifting assembly 9 is installed on the linear slide 2.
[0016] In this embodiment, combined with the Figure 2As shown, the dual lens mounting seat lifting assembly 9 includes a mounting frame 91, a housing 92 is fixedly mounted on the left side of the mounting frame 91, a screw rod 93 is connected to the internal bearing of the housing 92, a servo motor 96 is mounted on the upper part of the housing 92, the output shaft of the servo motor 96 is connected to the upper end coupling of the screw rod 93, and a lifting seat 94 is mounted on the upper and lower sides of the middle of the screw rod 93 through ball nuts 95 respectively, the lifting seat 94 is slidably arranged with the housing 92, and a lens mounting seat 97 is mounted on the left side of each lifting seat 94, a connecting piece 98 is installed on the front side of the middle part of the mounting frame 91, and a laser sensor 99 is installed on the connecting piece 98. The laser sensor 99 adopts a laser ranging sensor, which is used for To detect the position of the lens mounting seat 97, the detection end of the laser sensor 99 is oriented toward the vertical line where the two lens mounting seats 97 are located. During the detection, the user connects the servo motor 96 and the laser sensor 99 to the external industrial controller. The servo motor 96 drives the lead screw 93 to rotate, thereby driving the two lifting seats 94 to move up and down synchronously. When the laser sensor 99 detects one of the lifting seats 94, the servo motor 96 stops running and detects the Fresnel lens installed on the upper cover of the lifting seat 94. While detecting, the user can install or replace the Fresnel lens on the other lifting seat 94, saving replacement time and improving detection efficiency.
[0017] In this embodiment, specifically, the laser emitter 6 and the high reflector 8 are arranged to face each other.
[0018] In this embodiment, specifically, the height of the laser emitter 6 is consistent with the height of the laser sensor 99 .
[0019] How it works
[0020] In the utility model, the light receiving plate 7 is used to receive the light reflected by the high reflector 8, and the high reflector 8 is used to reflect the light emitted by the laser emitter 6. The industrial camera 4 can record the center of gravity position of the laser by shooting. During detection, the external Fresnel lens is installed on the lens mounting seat 97, and the laser of the laser emitter 6 passes through the Fresnel lens through the translation of the linear slide 2. The light is reflected by the high reflector 8 to the light receiving plate 7, and the industrial camera 4 records the center of gravity position of the laser. After multiple measurements, multiple laser center of gravity positions are recorded, and the data is compared with the data without the Fresnel lens installed. The data is input into an externally set computer, and the obtained offset is the refraction angle of the Fresnel lens.
[0021] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.
Claims
1. A Fresnel lens refraction angle detection machine, the Fresnel lens refraction angle detection machine comprises a base (1), a linear slide (2) is installed on the upper right front side of the base (1), a camera mounting frame (3) is arranged on the rear side of the linear slide (2), the camera mounting frame (3) is fixed to the base (1), and an industrial camera (4) is installed on the left side of the camera mounting frame (3), a transmitter mounting frame (5) is fixedly installed on the upper left front side of the base (1), a laser transmitter (6) is installed on the rear side of the transmitter mounting frame (5), a light receiving plate (7) is installed on the upper left side of the base (1), and a high reflector (8) is installed on the upper rear side of the base (1), characterized in that: A dual-lens mounting seat lifting assembly (9) is installed on the linear slide (2). The dual-lens mounting seat lifting assembly (9) comprises a mounting frame (91). A housing (92) is fixedly installed on the left side of the mounting frame (91). A screw rod (93) is connected to an internal bearing of the housing (92). A servo motor (96) is installed on the upper part of the housing (92). Lifting seats (94) are installed on the upper and lower sides of the middle part of the screw rod (93) through ball nuts (95) respectively. A lens mounting seat (97) is installed on the left side of each lifting seat (94). A connecting piece (98) is installed on the front side of the middle part of the mounting frame (91). A laser sensor (99) is installed on the connecting piece (98).
2. The Fresnel lens refraction angle detection machine according to claim 1, characterized in that: The output shaft of the servo motor (96) is connected to the upper end coupling of the screw rod (93).
3. The Fresnel lens refraction angle detection machine according to claim 1, characterized in that: The lifting seat (94) and the casing (92) are slidably arranged.
4. The Fresnel lens refraction angle detection machine according to claim 1, characterized in that: The laser emitter (6) and the high reflector (8) are arranged to face each other.
5. The Fresnel lens refraction angle detection machine according to claim 1, characterized in that: The height of the laser emitter (6) is consistent with the height of the laser sensor (99).
6. The Fresnel lens refraction angle detection machine according to claim 1, characterized in that: The detection end of the laser sensor (99) faces the vertical line where the two lens mounting seats (97) are located.