Optical element, and method and apparatus for forming the same

Details Optical element, and method and apparatus for forming the same Optical element, and method and apparatus for forming the same

1992-06-05

1994-02-15

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 14, 264259, 264260, 264313, B29D 1100

Patent

active

052864219

ABSTRACT:
In an optical element, and a method and apparatus for forming the same, peeling does not occur while a resin layer is cured, and the completed optical element can be easily released after the resin layer has been completely cured. The optical-element forming apparatus includes a forming surface for transferring a predetermined surface shape onto a surface of the resin layer, and includes a mold member having a high molecular weight material satisfying physical values of a hardness: >D50 and/or >R70, a modulus of elasticity: 5000-35000 kgf/cm.sup.2, a coefficient of friction: <0.2, a coefficient of water absorption: <0.3%, and a light resistance: invariable or slightly variable.

REFERENCES:
patent: 4116753 (1978-09-01), Tojyo et al.
patent: 4235654 (1980-11-01), Dohi et al.
patent: 4623496 (1986-11-01), Verhoeven et al.
patent: 4738516 (1988-04-01), Verhoeven et al.
patent: 4985186 (1991-01-01), Nose et al.
patent: 5062786 (1991-11-01), Arai

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