Thermal out-of-focus compensation adjusting mechanism for infrared optical equipment
A technology of compensation adjustment and infrared optics, which is applied in optics, optical components, installation, etc., can solve the problems of low equipment precision, high cost, and easy failure of materials, and achieve the effects of improving equipment accuracy, reducing equipment cost, and extending equipment life
Active Publication Date: 2014-08-20
江苏北方湖光光电有限公司
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Problems solved by technology
[0003] Based on domestic and foreign research reports, the currently used defocus adjustment methods can be roughly divided into three categories: the first category: sensor adjustment, and the cost of this type of equipment is relatively high
The second category: adjusted by some heat-sensitive materials, this type of equipment has higher requirements on materials, and the materials are prone to failure
The third category: single-thread manual adjustment, but the accuracy of this type of equipment is low, and the accuracy of general equipment is above 0.5mm
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[0011] as attached figure 1 As shown, the present invention includes a movement group body 1 and an objective lens group body 2. The movement group body 1 has a cavity 3 matched with the objective lens group body 2, and a guide block 4 is provided on the cavity 3 walls, as attached figure 2 As shown, the casing of the objective lens group body 2 has an axial guide groove 11 matched with the guide block 4, so that the objective lens group body can only move axially. as attached figure 1 As shown, one end of the surface of the objective lens group body 2 is provided with a screw thread 5, which is threadedly connected with the matching focus ring 6; The thread 7 is threadedly connected with the wall of the cavity 3;
[0012] In order to eliminate the gap between the movement group body 1 , the adjustment ring 6 and the threads of the objective lens group body 2 , a tension spring 9 is arranged between the movement group body 1 and the objective lens group body 2 . One end o...
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The invention relates to an infrared optical device, in particular to a compensation adjustment mechanism of the infrared optical device. Including the main body of the movement group and the body of the objective lens group, the body of the movement group has a cavity matching the body of the objective lens group, a guide block is arranged on the wall of the cavity, and an axial guide groove matching the guide block is provided on the shell of the objective lens group body, and the objective lens One end of the surface of the group body is provided with a thread, which is threadedly connected with the matching focus ring; one end of the outer surface of the focus ring is provided with a thread with the same direction of rotation as the surface of the shell surface of the objective lens group body and with different pitches, and is threaded with the cavity wall; The other end of the outer surface of the focus ring is an adjustment end, which is located outside the cavity. A tension spring is arranged between the movement group body and the objective lens group body. A limit device is arranged between the focus ring and the objective lens group body.
Description
technical field [0001] The invention relates to an infrared optical device, in particular to an adjustment mechanism of the infrared optical device. Background technique [0002] In order to improve the environmental adaptability of infrared optical equipment and ensure the stable operation of infrared optical equipment in a wide temperature range, it is necessary to compensate and adjust the infrared defocus caused by temperature, so that the infrared optical equipment can operate in a large temperature range. maintain good image quality. [0003] Based on domestic and foreign research reports, currently used defocus adjustment methods can be roughly divided into three categories: the first category: sensor adjustment, and the cost of this type of equipment is relatively high. The second category: adjusted by some heat-sensitive materials, this type of equipment has higher requirements on materials, and the materials are prone to failure. The third category: single-thread...
Claims
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IPC IPC(8): G02B7/02G02B7/04
Inventor 高雪军刘效东蒋天华朱佳丽蔡珂珺
Owner 江苏北方湖光光电有限公司