Measuring method and measuring apparatus

Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer

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356360, G01B 902

Patent

active

059401818

ABSTRACT:
A method of measuring a lens comprises an aligning step of relatively aligning a plurality of specified annular zones on a surface of the lens with predetermined positions, and a determining step of determining an aspherical axis of the target surface aligned in the aligning step.

REFERENCES:
patent: 5004346 (1991-04-01), Kiihel
patent: 5625454 (1997-04-01), Huang et al.

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