25 November 2009 Lens decenter and tilt measurement by interferogram
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For the recent years, the vigorous development of the electro-optic industry, particularly the digital camera and the cellular phone camera, has placed a larger and larger demand for the optical devices. Among the optical lens, the aspherical optical lens plays the key component because the aspherical lens may provide better imaging quality then the spherical lens does. For the manufacturing reason, the aspherical lens is prone to a decenter or tilt issue with respect to the optical axes of its two surfaces. To measure decenter and tile error specifically would help to obviate the deficient lens, but most of the present measuring method can't provide this function. This paper proposed a new method to specifically measure the decenter and tile of lens by observing the interferogram of each surface. And the corresponding measuring instrument, which contains interferometer and motion stages, was introduced as well.
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Min-Wei Hung, Min-Wei Hung, Wen-Hong Wu, Wen-Hong Wu, Kuo-Cheng Huang, Kuo-Cheng Huang, } "Lens decenter and tilt measurement by interferogram", Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 75060R (25 November 2009); doi: 10.1117/12.838389; https://doi.org/10.1117/12.838389

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