Precision installation adjusting device for optical reflector surface shape testing
A precision adjustment and installation adjustment technology, applied in the direction of optical devices, measuring devices, instruments, etc., can solve the problems of inaccurate measurement of mirror surfaces, unreasonable support methods, and inability to guide optical surface shape processing, etc., and achieves easy to build and test devices Simple, repeatable effect
Inactive Publication Date: 2020-06-16
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] In the stage of optical mirror processing in the early stage of telescope development, it is necessary to accurately measure the surface shape of the mirror. The unreasonable support method of the mirror body will lead to the inability to accurately measure the mirror surface and cannot guide the processing of the optical surface shape.
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[0030] attached figure 2 A preferred example of the device of the present invention is given to illustrate the features and implementation of the structural device of the present invention, but not to limit the scope of the present invention.
[0031] The main components adopted in the present invention are described as follows:
[0032] 1. Reflector 1 under test: 1m in diameter, made of SiC ceramics, 85Kg in weight, supported by 6 points on the back, and the wave aberration requirement is better than 1 / 30 λ@632.8nm;
[0033] 2. Weight sensor 2-4: adopt the membrane box type weight sensor of Bengbu Sensor System Co., Ltd., its model is JHBM-M1, the rated load range is 50Kg, and the adjustment resolution is 0.1Kg;
[0034] 3. Precision adjustment screw 2-6: made of wear-resistant copper alloy, the grade is CuSn4Pb4Zn3; precision adjustment nut 2-7: made of stainless steel 9Cr18, the thread pitch is 0.5mm. Fill the thread with grease;
[0035] 4. Four-dimensional adjustment ...
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The invention discloses a precision installation adjusting device for optical reflector surface shape testing. The precision installation adjusting device is composed of a tested reflector, sphericalhinges, a weight sensor and fine threads, wherein the reflector is supported by multiple points of the spherical hinges, a spherical hinge rod is supported on the weight sensor, the sensor is placed in a sliding chamber, and the lower end of the sensor is supported on a fine thread adjusting screw; and the spherical hinges, the sensor and the fine thread adjusting screw form an installation adjusting assembly and are jointly installed on a supporting plate. The precision installation adjusting device is characterized in that the weight sensor is used for displaying the weight borne by each supporting point, and precisely adjusting the reflector weight borne by each supporting point through using the fine threads. By utilizing the precision installation adjusting device, the reflector can be uniformly supported in a multi-point manner. The precision installation adjusting device is simple in structure, low in cost, easy to operate and suitable for the field of reflector surface shape machining and adjustment.
Description
technical field [0001] The invention relates to a precision installation and adjustment device for testing the surface shape of optical mirrors, which is applied to the field of surface shape processing and assembly of optical telescope mirrors. Background technique [0002] Space remote sensing is one of the main sources of ground image information, and has become an important means of modern military reconnaissance and civilian surveying and mapping. Space cameras are the main equipment for aerospace remote sensing. With the continuous improvement of user requirements, especially the traction of military application requirements, space cameras are developing in the direction of high resolution. According to the basic theory of wave optics, when the wavelength band used by the camera is determined, the angular resolution of the space camera system is inversely proportional to the aperture of the telescope system. The larger the aperture of the mirror, the higher the angular...
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IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 周成林罗家骏贾建军
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI