Mold for molding lenses

Details Mold for molding lenses Mold for molding lenses

2008-03-11

2008-03-11

Gupta, Yogendha N. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Coacting shaping surfaces

C425S397000, C425S808000, C065S286000

Reexamination Certificate

active

11433245

ABSTRACT:
An exemplary mold for molding lenses includes an upper mold core, a lower mold core, and a shell. The upper mold core has a first convex molding surface. The lower mold core has a second convex molding surface opposite to the first convex molding surface. The shell has an upper portion and a lower portion for respectively accommodating the upper mold core and the lower mold core therein. The shell has an inner step support formed between the upper portion and the lower portion.

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patent: 5762676 (1998-06-01), Richards et al.
patent: 6629435 (2003-10-01), Tomisaka
patent: WO97/15437 (1997-05-01), None

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