8 September 1995 Testing aspheric surfaces by TWHI
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The usage of two-wavelength holographic interferometry (TWHI) in testing aspherics and evaluating the testing results are discussed in the paper. TWHI accomplishes actual long- wavelength interferometry, using visible light as working wavelength. The sensitivity, accuracy, and range of measurement can be adjusted conveniently.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yueqiang Lee, Yueqiang Lee, Yongchao Shi, Yongchao Shi, Ling Du, Ling Du, } "Testing aspheric surfaces by TWHI", Proc. SPIE 2536, Optical Manufacturing and Testing, (8 September 1995); doi: 10.1117/12.218418; https://doi.org/10.1117/12.218418

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