Smit roof prism polishing and machining technology

Abstract

The invention discloses a Smit roof prism polishing and machining technology. A prism blank body and a profiling model corresponding to the prism blank body are included. The included angle of the prism blank body, a surface 1 and a surface 2 on the profiling model is 45 degrees; the included angle of a surface 3 and a surface 4 is 90 degrees; a surface 5 and a surface 6 are mutual parallel; the prism blank body and the surfaces of the profiling model are glued by an optical cement technology in an optical cooling machining technology, and the surface 1, the surface 2, the surface 3, and the surface 4 of the prism blank body are polished and machined respectively; during the machining process, through observing, measuring and calculating product interface fringes, the flatness degree and parallel difference of the product surfaces are adjusted by a polishing method so as to guarantee the angle accuracy of the product; and by utilizing the technology, the angle accuracy is required to be within plus / minus 2 of the roof angle of the high-accuracy Smit roof prism can achieve percent of pass 90% above one time, the production efficiency is improved, the damage rate is lowered, and the economic benefit is improved obviously.

Description

Technical field [0001] The invention relates to the field of Smit roof prisms, in particular to a polishing process for Smit roof prisms. Background technique [0002] At present, the traditional high-precision Smit roof prism (90 degree roof angle ≤ ± 2 seconds) roof angle processing, it is difficult to realize the control of the second-level angle accuracy during the processing; generally, the parallel difference is measured by a dial indicator Method, the accuracy of the roof ridge angle is determined during the processing; this measurement method has large errors, low accuracy, and is easy to adversely affect the surface finish of the optical glass. At the same time, the one-time pass rate of the product is low. Summary of the invention [0003] The invention provides a one-time pass rate of the ridge angle accuracy of the high-precision smit roof prism (90-degree roof angle≤±2 seconds) that realizes high measurement accuracy, simple operation, and one-time pass rate Spec...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional high-precision Schmidt roof prism (90-degree roof angle ≤ ± 2 seconds) is difficult to control the angular accuracy of the second level during the processing process; generally, the method of measuring parallelism with a dial gauge is used. method, to determine the angle accuracy of the ridge angle during the processing; this measurement method has large errors, low precision, and is likely to have adverse effects on the surface finish of optical glass, and the one-time pass rate of the product is low

Images