Method of measuring decentering of lens

Details Method of measuring decentering of lens Method of measuring decentering of lens

2006-03-17

2008-10-21

Nguyen, Sang (Department: 2886)

Optics: measuring and testing

Lens or reflective image former testing

Optical center, cylinder axis, or prism measuring or...

C356S124500, C356S124000

Reexamination Certificate

active

07440089

ABSTRACT:
Disclosed is a measuring method which can measure the decentering of an axis by the measurement of a two-dimensional curved surface profile. This method has a first step of measuring a profile of a examined surface by a probe from a first reference position which is a position separate by a predetermined amount from a predetermined position on the examined surface of a subject lens, a second step of measuring the profile of the examined surface by scanning the examined surface by the probe from the second reference position which is a position separate by a predetermined amount from said predetermined position in a route opposite to the scanning direction of said first step after a rotation of the subject lens; and the step of obtaining the decentering amount of the examined surface by the use of the measurement results obtained at the first and second steps.

REFERENCES:
patent: 3988068 (1976-10-01), Sprague
patent: 5059022 (1991-10-01), Ookawa
patent: 5335244 (1994-08-01), Dugan et al.
patent: 5351119 (1994-09-01), Nakatsue
patent: 5500732 (1996-03-01), Ebel et al.
patent: 5627638 (1997-05-01), Vokhmin
patent: 5717781 (1998-02-01), Ebel et al.
patent: 5999251 (1999-12-01), Teramoto et al.
patent: 03115944 (1991-05-01), None
patent: 7-229811 (1995-08-01), None
patent: 8-12126 (1996-02-01), None
patent: 2735104 (1998-01-01), None
patent: 2735106 (1998-01-01), None
Technology of Making Optical Elements '79, Japan Optical Engineering Research Association, English translation provided.

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