Producing method for optical element molding die and...

Details Producing method for optical element molding die and... Producing method for optical element molding die and...

2006-06-13

2006-06-13

Wong, Edna (Department: 1753)

Electrolysis: processes, compositions used therein, and methods

Electroforming or composition therefor

Optical element

C205S070000, C264S001270, C264S002500

Reexamination Certificate

active

07060175

ABSTRACT:
A method of producing an optical element forming die, includes the steps of: cutting a base member to form a base optical surface of the base member while rotating the base member; cutting an outer circumferential surface of the base member so that an optical axis of the base optical surface is identical to a rotation center of the outer circumferential surface of the base member while rotating the base member; forming an optical surface having a predetermined pattern onto the base optical surface of the base member; forming an electroforming mold having an optical transfer surface complementary to the optical surface of the base member by electroforming wherein the electroforming is conducted with the base member; and cutting an outer circumferential surface of the electroforming mold on the basis of the outer circumferential surface of the base member.

REFERENCES:
patent: 5728324 (1998-03-01), Welch et al.
patent: 5770120 (1998-06-01), Kamihara et al.

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