Optical zoom lens performance test fixture

Abstract

The utility model discloses an optical zoom lens performance test fixture which comprises a sliding support, a sliding rail is arranged on the sliding support, a test box support, a teleconverter support and a light source plate support are arranged on the sliding rail in a sliding mode through sliding blocks, and the test box support, the teleconverter support and the light source plate support are sequentially arranged. An image acquisition test box is detachably arranged on the test box support, a teleconverter is arranged on the teleconverter support, a light source panel is arranged on the light source plate support, a Chart graph is arranged below the light source panel, the image acquisition test box is electrically connected with a zoom lens, and the optical center of the zoom lens is opposite to the optical center of the teleconverter and the center of the Chart graph. The zoom lens performance testing device has the advantages that the performance of the zoom lens in the long-focus mode and the wide-angle mode can be tested on the same device, the construction cost of the device is low, image information is collected through the image collecting and testing box, image analysis is conducted through the upper computer, and performance testing of the zoom lens is completed.

Description

Technical Field

[0001] The utility model relates to the field of testing fixtures, in particular to a fixture for testing the performance of an optical zoom lens. Background Art

[0002] With the prevalence of smart products, cameras are no longer just used in mobile phones. They are also increasingly used in smart homes, drones, smart security cameras, and facial recognition applications. Furthermore, cameras are also being used in industrial, healthcare, construction, and military fields. As camera applications expand, so too are the demands for their functionality. In some areas, cameras are required to seamlessly switch between near and far objects without changing their position. This requires the camera lens to smoothly zoom in and out during shooting, which has led to the development of zoom lenses. Zoom lenses have wide-angle and telephoto ends, allowing for adjustment to different shooting distances, suitable for different shooting scenarios and themes.

[0003] To evaluate the performance of a zoom lens, both the wide-angle end and the telephoto end need to be evaluated. Therefore, it is necessary to design a test fixture for the zoom lens. The existing test equipment on the market is expensive and therefore not suitable for small-batch manual testing of products. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an optical zoom lens performance test fixture, which has a simple structure, is easy to operate and has low cost.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An optical zoom lens performance test fixture is characterized by comprising a sliding bracket, the sliding bracket being provided with a slide rail, a test box bracket, a teleconverter bracket, and a light source board bracket being slidably provided on the slide rail via a slider, the test box bracket, the teleconverter bracket, and the light source board bracket being arranged in sequence, the slider being provided with a locking screw, an image acquisition test box being detachably provided on the test box bracket, a teleconverter being provided on the teleconverter bracket, a light source panel being provided on the light source board bracket, a chart being provided below the light source panel, the image acquisition test box being electrically connected to the zoom lens, the optical center of the zoom lens being aligned with the center of the chart, and the optical center of the teleconverter being aligned with the center of the chart, and the image acquisition test box being used to acquire image information of telephoto and wide-angle lenses.

[0007] Furthermore, the image acquisition test box is also electrically connected to a host computer, and the host computer is used for image analysis.

[0008] Furthermore, a clamping device is provided at the upper end of the test box bracket, and the clamping device includes a front clamping block and a rear clamping block. The front clamping block and the rear clamping block are connected by a movable snap buckle, and the front clamping block and the rear clamping block have space for accommodating the zoom lens and the image acquisition test box.

[0009] Furthermore, the teleconverter is detachably mounted on the teleconverter bracket via a mounting plate, and the teleconverter bracket is fixed by adjusting its position on the slide rail to match the telephoto and wide-angle modes of the zoom lens.

[0010] The beneficial effects of the present invention include: the performance of the zoom lens in both telephoto and wide-angle modes can be tested on the same device, and the cost of setting up the device is low. Image information is collected by the image acquisition test box, and the host computer performs image analysis to complete the performance test of the zoom lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the clamping device of the present utility model. DETAILED DESCRIPTION

[0013] The present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.

[0014] A kind of Figure 1-2 The optical zoom lens performance test fixture shown includes a sliding bracket 1, which is provided with a slide rail 2. A test box bracket 3, a teleconverter bracket 4, and a light source board bracket 6 are slidably mounted on the slide rail 2 via a slider 5. The test box bracket 3, teleconverter bracket 4, and light source board bracket 6 are arranged in sequence. The slider 5 is provided with a locking screw that secures the test box bracket 3, teleconverter bracket 4, and light source board bracket 6 on the slide rail 2. An image acquisition test box 7 is detachably mounted on the test box bracket 3. The image acquisition test box 7 is used to capture image information for the lens's telephoto and wide-angle modes. A teleconverter 8 is detachably mounted on the teleconverter bracket 4 via a mounting plate. The teleconverter bracket 4 is adjusted and fixed on the slide rail 2 to match the zoom lens's telephoto and wide-angle modes.

[0015] A light source panel 9 is provided on the light source board bracket 6, and a chart is provided below the light source panel 9. The image acquisition test box 7 is electrically connected to a zoom lens, and the optical center of the zoom lens is opposite to the center of the chart, and the optical center of the teleconverter 8 is opposite to the center of the chart. The image acquisition test box 7 is also electrically connected to a host computer, which is used for image analysis and is a computer.

[0016] To facilitate the rapid replacement of the optical zoom lens, a clamping device is provided at the upper end of the test box bracket 3 of this embodiment. The clamping device includes a front clamping block 10 and a rear clamping block 11. The front clamping block 10 and the rear clamping block 11 are connected by a movable snap fastener. The front clamping block 10 and the rear clamping block 11 have space for accommodating the zoom lens and the image acquisition test box.

[0017] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An optical zoom lens performance test fixture, characterized by: The invention comprises a sliding bracket (1), wherein the sliding bracket (1) is provided with a sliding rail (2), and a test box bracket (3), a teleconverter bracket (4), and a light source board bracket (6) are slidably provided on the sliding rail (2) via a slider (5), wherein the test box bracket (3), the teleconverter bracket (4), and the light source board bracket (6) are arranged in sequence, and a locking screw is provided on the slider (5). An image acquisition test box (7) is detachably provided on the test box bracket (3), a teleconverter (8) is provided on the teleconverter bracket (4), and a light source board bracket (6) is provided with a light source panel (9). A chart is provided below the light source panel (9), and the image acquisition test box (7) is electrically connected to a zoom lens, wherein the optical center of the zoom lens is aligned with the center of the chart, and the optical center of the teleconverter (8) is aligned with the center of the chart, and the image acquisition test box (7) is used to acquire image information of the telephoto and wide-angle lenses.

2. The optical zoom lens performance test fixture according to claim 1, characterized in that: The image acquisition test box (7) is also electrically connected to a host computer, and the host computer is used for image analysis.

3. The optical zoom lens performance test fixture according to claim 1, wherein: A clamping device is provided at the upper end of the test box bracket (3), and the clamping device comprises a front clamping block (10) and a rear clamping block (11). The front clamping block (10) and the rear clamping block (11) are connected via a movable buckle (12). The front clamping block (10) and the rear clamping block (11) have spaces for accommodating a zoom lens and an image acquisition test box.

4. The optical zoom lens performance test fixture according to claim 1, wherein: The teleconverter (8) is detachably mounted on the teleconverter bracket (4) via a mounting plate, and the teleconverter bracket (4) is fixed on the slide rail (2) by adjusting its position for matching the telephoto and wide-angle modes of the zoom lens.

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