Optical element molding die, and optical element...

Details Optical element molding die, and optical element... Optical element molding die, and optical element...

2009-03-02

2010-12-21

Martinez, Joseph (Department: 2873)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Injection molding

C359S811000

Reexamination Certificate

active

07854879

ABSTRACT:
It is to provide an optical element, an optical element molding die, and an optical element manufacturing method, which can easily but surely suppress generation of transcription failure of a resin material and also enables to manufacture an optical element with an excellent optical performance at a low cost while improving the yield. In an optical element formed with a resin material, a gate part is formed on a side face of an optical element main body, and a ratio of the thickness of the gate part with respect to the thickness of an optical function part of the optical element main body is set as 50% or more.

REFERENCES:
patent: 5805355 (1998-09-01), Natsuno
patent: 5960951 (1999-10-01), Nomura et al.
patent: 2006/0093700 (2006-05-01), Naito et al.
patent: H5-177725 (1993-07-01), None

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