Method and device for evaluating spectacle lens or mold for...

Details Method and device for evaluating spectacle lens or mold for... Method and device for evaluating spectacle lens or mold for...

2007-01-02

2007-01-02

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

Lens or reflective image former testing

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

C351S169000, C351S177000

Reexamination Certificate

active

10509906

ABSTRACT:
A dioptric power distribution measuring device (1) measures the dioptric power distribution of a target lens. A computer (3) constructs a design lens spatial model in a virtual space, and calculates the dioptric power distribution of the design lens spatial model by performing simulation processing for incident/exit light for only the same point in the design lens spatial model as a measurement point on the target lens. The computer then compares the calculated dioptric power distribution with the dioptric power distribution of the target lens which is measured by the dioptric power distribution measuring device (1).

REFERENCES:
patent: 5825476 (1998-10-01), Abitol et al.
patent: 6222621 (2001-04-01), Taguchi
patent: 6412947 (2002-07-01), Yanari
patent: 6637880 (2003-10-01), Yamakaji et al.
patent: 2002/0008846 (2002-01-01), Kelch et al.
patent: 08-304228 (1996-11-01), None

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