Method for detecting angle between fine grinding surfaces of prism
A technology of measuring prism and fine grinding, applied in the field of optical detection, can solve the problem of not reaching the measurement accuracy, and achieve the effect of high-precision measurement
Inactive Publication Date: 2017-01-04
FUJIAN CASTECH CRYSTALS
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[0002] A prism is a polyhedral optical element made of transparent materials (such as glass, crystal, etc.), and its surface is composed of several polished surfaces and finely ground surfaces, and some prisms require the angular accuracy between the finely ground surfaces to reach ±0.05°, while The universal angle ruler or projector currently used to measure the angle between the fine grinding surfaces of prisms cannot achieve such measurement accuracy
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[0006] The varnish used in this method is prepared by refining drying oil and polyol rosin ester, adding a drier and No. 200 paint solvent oil; Put the varnish into the sprayer to spray a small area of one of the fine grinding surfaces of the product, and wait for it to dry naturally; place the unpainted fine grinding surface on the reference platform, and use the varnish layer on the other side to reflect light using the comparison method. The angle between the fine grinding surfaces of the prism, such as figure 1 ;After the measurement is completed, the varnish layer can be wiped off with alcohol, so as to ensure that the surface quality of the finely ground surface will not be affected.
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The invention provides a method for detecting an angle between fine grinding surfaces of a prism. The fine grinding surfaces cannot reflect light, so that a universal angle meter or a projector is generally used for measuring the angle between fine grinding surfaces of the prism and the angle between fine grinding surfaces of the prism cannot be highly precisely measured. According to the method provided by the invention, a layer of thin reflective varnish is sprayed on the fine grinding surfaces, and an optical comparison goniometer is adopted for measuring the angle between fine grinding surfaces, so that the high-precise measurement is realized, and meanwhile, ethyl alcohol is adopted for wiping the varnish layer after the detection, so that the surface quality of the fine grinding surfaces is not influenced.
Description
technical field [0001] The invention belongs to the field of optical detection, and specifically refers to a method for detecting the angle between fine grinding surfaces of a prism. Background technique [0002] A prism is a polyhedral optical element made of transparent materials (such as glass, crystal, etc.), and its surface is composed of several polished surfaces and finely ground surfaces, and some prisms require the angular accuracy between the finely ground surfaces to reach ±0.05°, while The universal angle ruler or projector currently used to measure the angle between the fine grinding surfaces of the prism cannot reach such measurement accuracy. Contents of the invention [0003] The method provided by the invention uses a thin layer of reflective varnish sprayed on the surface of the fine grinding surface, so that an optical comparison goniometer can be used to measure the angle between the fine grinding surfaces of the prism, thereby realizing high-precision ...
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CPCG01B11/26
Inventor 肖忠杰姜心声宋龙王昌运陈伟
Owner FUJIAN CASTECH CRYSTALS