Acta Optica Sinica, Volume. 1, Issue 5, 457(1981)
Model JQY-300 laser holographic interferometer
The model JQY -800 la3er holographic interferometer is an instrument used for uniformity measurement of large size optical glass by means of double-exposure holographic differential interferometry. The measurement accuracy of ±5xl0~7 can be obtained. The characteristics of structure design are as follows: 1. Foamed rubber is used as vibration-proof leading to a simple construction, Hz vibration can be isolated. 2. The optical path difference introduced by work-table deformation under heavy sample is eliminated, using the method of placing the sample holder at the support point. 3. The sample mount consists of three-dimension angle micro-adjust structure instead of common used ''point, line, plane" positioning structure. It is convenient for machining, assembly, and the requirement of accuracy can be met.
Get Citation
Copy Citation Text
WANG WENGUI. Model JQY-300 laser holographic interferometer[J]. Acta Optica Sinica, 1981, 1(5): 457