Single focus compound lens and mold

Details Single focus compound lens and mold Single focus compound lens and mold

2007-10-09

2007-10-09

Stultz, Jessica T (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S172000, C351S168000, C351S178000

Reexamination Certificate

active

10545451

ABSTRACT:
Disclosed is a single focus compound lens and a mold for manufacturing the single focus compound lens, where the single focus compound lens has a reading far point diopter lens and a reading near point diopter having different diopters that are integrally molded to have the same optical central point and the mold has the two divided areas with respect to the optical central point, each of the two areas forming an inner peripheral surface having a difference in curvature and thickness corresponding to the diopter difference, such that near distance works like reading or doing with a computer can be accomplished without any trouble and the fatigue of eyes caused due to the failure of correspondence of focuses can be prevented.

REFERENCES:
patent: 5142411 (1992-08-01), Fiala
patent: 5470892 (1995-11-01), Gupta et al.
patent: 6309067 (2001-10-01), Zeidler
patent: 11337886 (1999-12-01), None
patent: U3065867 (2000-02-01), None
patent: 2002-202481 (2002-07-01), None
English Translation of Hoshino JP Application 2002-202481 Published Jul. 19, 2002.

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