A kind of card support tool for camera module test
By designing a chart support fixture, the height of the lifting bracket is adjusted by engaging a butterfly nut with a lead screw. Combined with a sliding guide rail and a scale, the problem of chart offset caused by manual adjustment is solved, and accurate test data is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU XUGUANG ZHIXIN TECHNOLOGY CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-06-23
AI Technical Summary
In existing technologies, the distance is adjusted by manually moving the test chart, which results in low adjustment accuracy, easy chart displacement, and inaccurate test data.
The tooling used is a drawing support fixture consisting of a main frame, worktable, bracket, lead screw, and butterfly nut. The height of the lifting bracket is adjusted by the engagement of the butterfly nut and the lead screw. Combined with the sliding guide rail and scale, precise drawing position adjustment is achieved.
It improves the accuracy of chart position adjustment, avoids offset, and ensures the accuracy of detection data.
Smart Images
Figure CN224401590U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing operation technology, specifically to a chart support fixture for testing camera modules. Background Technology
[0002] In the manufacturing process of some electronic devices, such as mobile phones, it is necessary to use transmission charts to inspect the phone's camera in order to determine the image quality. Specifically, the transmission chart or the phone needs to be held manually so that the transmitted light source passes through the transmission chart and forms an image on the camera. The operator then observes the image on the phone to determine whether the camera meets production requirements. Different transmission charts are used during the inspection process to correspond to different inspection parameters.
[0003] In existing technologies, when testing a camera under test, the distance of the test chart needs to be adjusted according to different lens specifications. However, the existing technology uses manual movement of the test chart to adjust the distance, which results in low accuracy of the test chart movement distance adjustment, is cumbersome, and the chart is prone to displacement, causing deviation in the detection distance and resulting in inaccurate detection data. Utility Model Content
[0004] The purpose of this utility model is to provide a pattern support fixture for testing camera modules, which solves the problems of the existing technology that uses manual movement of the test pattern to adjust the distance, resulting in low accuracy of the test pattern movement distance adjustment, cumbersome adjustment, and easy pattern offset causing deviation in the detection distance, leading to inaccurate detection data.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A support fixture for testing camera modules includes a main frame with a worktable on top. Supports are symmetrically positioned at the left and right ends of the worktable's top. Each support includes two vertical rods and two horizontal rods. The two vertical rods are symmetrically positioned on the worktable, and the two horizontal rods are positioned horizontally between the two vertical rods. A vertically positioned lead screw is fixed between the two horizontal rods on the same support. The lead screws on the left and right supports of the worktable are slidably connected to horizontally positioned lifting brackets. Two butterfly nuts are threaded onto the lead screws, located on the upper and lower sides of the lifting brackets respectively. A light box is mounted on the bottom side of the lifting bracket, and transparent glass at both ends of the light box is connected horizontally to the bottom of the light box via hangers.
[0007] A further technical solution is to provide a light shield around the top of the workbench, with an operating opening on the front side of the light shield.
[0008] A further technical solution is to fix two vertically arranged sliding guide rails between the two crossbars on the same bracket, and slide the lifting bracket end to the sliding guide rails.
[0009] A further technical solution is to have vertically set scales on the opposite side of the vertical rods located at the left and right ends of the workbench.
[0010] A further technical solution is to install a camera fixing mechanism on the workbench.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] In this invention, the device to be tested is fixed on the worktable, and then the transmission chart is placed above the transparent glass. The butterfly nut located below the lifting bracket engages with the lead screw, adjusting the vertical height of the butterfly nut. The butterfly nut below the lifting bracket supports the lifting bracket, thereby adjusting its height. When the height of the lifting bracket is adjusted to the appropriate position, the butterfly nut located above the lifting bracket engages with the lead screw, making contact with the top side of the lifting bracket. This, combined with the butterfly nut below the lifting bracket, clamps and fixes the lifting bracket. This avoids the need for manual movement of the test chart to adjust the distance, which results in low accuracy of the test chart movement distance adjustment, is cumbersome, and the chart is prone to shifting, causing deviations in the detection distance and leading to inaccurate detection data. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of a chart support fixture structure for testing camera modules according to this utility model.
[0014] Figure 2 This is a schematic diagram of another state of the graphic support fixture for testing camera modules according to this utility model.
[0015] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0016] Icons: 1-Main frame, 2-Workbench, 3-Bracket, 4-Vertical bar, 5-Horizontal bar, 6-Screw rod, 7-Lifting bracket, 8-Butterfly nut, 9-Light box, 10-Hanging piece, 11-Transparent glass, 12-Light shield, 13-Operating port, 14-Sliding guide rail, 15-Scale ruler, 16-Camera fixing mechanism. 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] Example 1
[0019] Reference Figures 1 to 3 The present invention discloses a support fixture for testing camera modules, comprising a main frame 1, a workbench 2 on the top of the main frame 1, and symmetrical supports 3 on the left and right ends of the top of the workbench 2. Each support 3 includes two vertical rods 4 and two horizontal rods 5. The two vertical rods 4 are symmetrically arranged vertically on the workbench 2, and the two horizontal rods 5 are arranged horizontally between the two vertical rods 4. A vertically arranged lead screw 6 is fixed between the two horizontal rods 5 on the same support 3. The lead screw 6 on the left and right ends of the support 3 of the workbench 2 is slidably connected to a horizontally arranged lifting bracket 7. Two butterfly nuts 8 are threaded onto the lead screw 6, and the two butterfly nuts 8 are located on the upper and lower sides of the lifting bracket 7, respectively. A light box 9 is installed on the bottom side of the lifting bracket 7. The two ends of the light box 9 are connected to transparent glass 11 placed horizontally below the light box 9 by means of hangers 10.
[0020] The light box 9 can be an LED light box. The brightness of the light box 9 can be adjusted by configuring a brightness adjustment switch, which is common knowledge to those skilled in the art. Those skilled in the art can directly obtain the corresponding installation relationship and structure based on common knowledge, so it will not be described in detail here.
[0021] Specifically, in use, the device to be tested is fixed on the workbench 2, and then the transmission chart is placed above the transparent glass 11. The butterfly nut 8 located below the lifting bracket 7 is turned to engage with the lead screw 6, adjusting the vertical height of the butterfly nut 8 located below the lifting bracket 7. The butterfly nut 8 located below the lifting bracket 7 provides support for the lifting bracket 7, thereby adjusting the height of the lifting bracket 7. When the height of the lifting bracket 7 is adjusted to the appropriate position, the butterfly nut 8 located above the lifting bracket 7 is turned to engage with the lead screw 6 and abut against the top side of the lifting bracket 7. This, together with the butterfly nut 8 located below the lifting bracket 7, clamps and fixes the lifting bracket 7. This avoids the need for manual movement of the test chart to adjust the distance, which results in low accuracy of the test chart movement distance adjustment, is cumbersome, and the chart is prone to displacement, causing deviation in the detection distance and leading to inaccurate detection data.
[0022] Example 2
[0023] Based on the aforementioned Embodiment 1, referring to Figures 1 to 3As shown, the top of the workbench 2 is covered by a light shield 12 enclosing the support 3. An operation port 13 is opened on the front side of the light shield 12. The light shield 12 can be made of black matte partition. Specifically, by setting the light shield 12, interference from external light sources and reflection interference can be prevented.
[0024] Example 3
[0025] Based on the aforementioned Embodiment 1, referring to Figures 1 to 3 As shown, two vertically arranged sliding guide rails 14 are fixed between the two crossbars 5 on the same bracket 3, and the end of the lifting bracket 7 is slidably connected to the sliding guide rails 14; specifically, by setting the sliding guide rails 14, the stability of the lifting bracket 7 during lifting is improved.
[0026] Example 4
[0027] Based on the aforementioned Embodiment 1, referring to Figures 1 to 3 As shown, vertical scales 15 are provided on the opposite sides of the vertical rods 4 at both ends of the worktable 2. By setting scales 15, when it is necessary to adjust the distance of the test chart according to different lens specifications, the position of the lifting bracket 7 can be determined according to the scales 15 aligned at both ends of the lifting bracket 7. At the same time, it can also ensure that the left and right heights of the lifting bracket 7 are balanced, so that the lifting bracket 7 is horizontal. This avoids the situation where the adjustment accuracy of the test chart movement distance is not high, the adjustment is troublesome, and the chart is deviated, causing the detection distance to deviate and resulting in inaccurate detection data.
[0028] Example 5
[0029] Based on the aforementioned Embodiment 1, referring to Figures 1 to 3 As shown, a camera fixing mechanism 16 is installed on the workbench 2. Specifically, by setting up the camera fixing mechanism 16, it is convenient to fix the electronic device under test. The camera fixing mechanism 16 is existing technology, and its working principle and structure are common technical knowledge to those skilled in the art. Those skilled in the art can directly obtain the corresponding installation relationship and structure based on common knowledge, so it will not be described in detail here.
[0030] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.
Claims
1. A support fixture for testing camera modules, comprising a main frame (1), wherein a worktable (2) is provided on the top of the main frame (1), characterized in that: The workbench (2) is symmetrically provided with brackets (3) at the top left and right ends. The brackets (3) include two vertical rods (4) and two horizontal rods (5). The two vertical rods (4) are symmetrically arranged vertically on the workbench (2). The two horizontal rods (5) are arranged horizontally between the two vertical rods (4). A vertically arranged screw rod (6) is fixed between the two horizontal rods (5) on the same bracket (3). The screw rods (6) located on the left and right ends of the workbench (2) are slidably connected to the same horizontally arranged lifting brackets (7). Two butterfly nuts (8) are threaded on the screw rods (6). The two butterfly nuts (8) are located on the upper and lower sides of the lifting brackets (7). A light box (9) is installed on the bottom side of the lifting brackets (7). The two ends of the light box (9) are connected to transparent glass (11) placed horizontally below the light box (9) through hangers (10).
2. The pattern support fixture for testing camera modules according to claim 1, characterized in that: The workbench (2) is covered with a light shield (12) on the top of the support (3), and an operation port (13) is opened on the front side of the light shield (12).
3. The pattern support fixture for testing camera modules according to claim 1, characterized in that: Two vertically arranged sliding guide rails (14) are fixed between the two crossbars (5) on the same bracket (3), and the end of the lifting bracket (7) is slidably connected to the sliding guide rails (14).
4. The pattern support fixture for testing camera modules according to claim 1, characterized in that: A vertical scale (15) is provided on the opposite side of the vertical rods (4) located at the left and right ends of the workbench (2).
5. The pattern support fixture for testing camera modules according to claim 1, characterized in that: A camera fixing mechanism (16) is installed on the workbench (2).