Optical: systems and elements – Lens
Reexamination Certificate
2008-03-25
2008-03-25
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
Reexamination Certificate
active
07349161
ABSTRACT:
A molding lens with indentations for measuring eccentricity and a method for measuring eccentricity thereof are disclosed. At least one indentation concentric with an optical surface is respectively disposed on a front plane and a rear plane of the molding lens on area outside the optical surface while the indentation is observed by means of a measuring microscope. Moreover, the eccentricity of the molding lens is detected by eccentricity test function of the measuring microscope and the eccentric direction is defined so as to modify the lens mold and replace conventional eccentricity test that uses a transmission eccentric scale indicator in combination with a jig. Thus the cost of test equipment is reduced, test procedure is simplified and efficiency of mold modification is improved. Therefore, it's more convenient to manage manufacturing of the lens.
REFERENCES:
patent: 2001/0009071 (2001-07-01), Iikawa et al.
Huang Chih-Hsiung
Shyu San-Woei
Wang Chi-Hsiung
Collins Darryl J.
E-Pin Optical Industry Co., Ltd.
Sugarman Scott J.
Troxell Law Office PLLC
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