Plastic lens and method of making a plastic lens

Details Plastic lens and method of making a plastic lens Plastic lens and method of making a plastic lens

1998-06-05

2000-04-25

Epps, Georgia

Optical: systems and elements

Lens

359804, 359811, 359819, G02B 300, G02B 2702, G02B 702

Patent

active

060551119

ABSTRACT:
A plastic lens which is easy to mold and has favorable optical precision. This plastic lens has a flange at the outer periphery of an optically functioning portion, a part of the peripheral surface of the flange being provided with a gate-positioning projection, and a side face of the gate-positioned projection including a cut-off portion.

REFERENCES:
patent: 5642235 (1997-06-01), Ichikawa
patent: 5905599 (1999-05-01), Nomura

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