DEVICE FOR MANUFACTURING RESIN MOLDED ARTICLES FOR USE IN OPTICAL ELEMENTS, AND METHOD FOR MANUFACTURING OPTICAL ELEMENTS

WIPO Patent Application WO/2011/040186

A1

Disclosed is a device for manufacturing resin molded articles for use in optical elements. Said device is provided with: a first mold, which is fixed in place; a second mold that has, on a cavity mold surface, a transfer surface for transferring an optical surface to a molten resin injected into the cavity; a nozzle for injecting a fluid under pressure into the molten resin injected into the cavity, thereby forming a void inside said molten resin; and an ejector pin that is provided in the second mold, protruding from the mold surface thereof, to release a base material from the mold surface. The nozzle is provided on a part of the cavity mold surface other than the transfer surface of the second mold and has a tip formed so as to protrude from the mold surface into the cavity. The ejector pin protrudes at a position between a position corresponding to the tip of the base material nozzle and the end of the aforementioned optical surface on the side on which the tip of the nozzle is disposed.

TAKAGI HIROSHI (JP)
HARA SHINICHIRO (JP)
MATSUMOTO YASUHIRO (JP)
KANEKO NAOKI (JP)

PCT/JP2010/065211

April 07, 2011

September 06, 2010

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KONICA MINOLTA OPTO INC (JP)
TAKAGI HIROSHI (JP)
HARA SHINICHIRO (JP)
MATSUMOTO YASUHIRO (JP)
KANEKO NAOKI (JP)

B29C45/26; B29C45/00; B29C45/40; G02B1/04; B29L11/00

JP2001105449A	2001-04-17
JP2001188113A	2001-07-10
JPH10296800A	1998-11-10
JP2004160783A	2004-06-10
JP2005066823A	2005-03-17
JP2008241817A	2008-10-09
JP2001105449A	2001-04-17

See also references of EP 2484507A4

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