Method for forming aspherical optical element

Details Method for forming aspherical optical element Method for forming aspherical optical element

2005-03-18

2010-12-14

Huson, Monica A (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Including step of mold making

C264S001100, C264S002200, C264S002300, C359S642000, C359S838000

Reexamination Certificate

active

07850880

ABSTRACT:
An arrangement is made such that the magnitude of cure shrinkage obtained by multiplying the thickness of a resin layer2between a master mold1and a negative mold substrate3by the cure shrinkage ratio of the resin and the magnitude of cure shrinkage obtained by multiplying the thickness of a resin layer4between the negative mold23and the surface of the spherical or flat substrate5by the cure shrinkage ratio of the resin can be compensated for by each other. In accordance with this method, an aspherical optical element having a higher precision than ever can be formed at reduced cost by a replica method involving the addition of a resin layer to the surface of a spherical or flat substrate.

REFERENCES:
patent: 5411430 (1995-05-01), Nishimura et al.
patent: 2002/0033547 (2002-03-01), Kloosterboer et al.
patent: 63-157103 (1988-10-01), None
patent: 2003-362489 (2003-11-01), None

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