EP 0377020 A4 19910424 - METHOD AND APPARATUS FOR MANUFACTURING DISPOSABLE OPTICAL MOLDS
Title (en)
METHOD AND APPARATUS FOR MANUFACTURING DISPOSABLE OPTICAL MOLDS
Publication
Application
Priority
US 20124088 A 19880601
Abstract (en)
[origin: WO8911966A1] A molding process for manufacturing disposable optical molds which eliminates the need for surfacing and requires only finishing to conform the molded lens to the eyeglass frames. Submaster molds (41) and (42) for forming blanks, are produced to have a form corresponding to the surface of the lens ultimately being formed. Once the desired lens surface configuration is prescribed, the molds are selected, then the lenses are formed by casting.
IPC 1-7
IPC 8 full level
B29C 33/38 (2006.01); B29C 45/16 (2006.01); B29C 45/37 (2006.01); B29D 11/00 (2006.01); B29C 35/08 (2006.01); B29L 11/00 (2006.01)
CPC (source: EP)
B29C 33/38 (2013.01); B29D 11/00028 (2013.01); B29D 11/00413 (2013.01); B29D 11/00432 (2013.01); B29D 11/00528 (2013.01); B29C 2035/0827 (2013.01); B29K 2909/08 (2013.01)
Citation (search report)
- [X] US 4166088 A 19790828 - NEEFE CHARLES W [US]
- [X] DE 2354987 B1 19750430 - DEUTSCHE SPIEGELGLAS AG
- [A] PATENT ABSTRACTS OF JAPAN, vol. 11, no. 135 (M-585), 28th April 1987; & JP-A-61 274 925 (MITSUBISHI RAYON CO., LTD) 05-12-1986
- See references of WO 8911966A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8911966 A1 19891214; EP 0377020 A1 19900711; EP 0377020 A4 19910424; JP H03502908 A 19910704
DOCDB simple family (application)
US 8902359 W 19890531; EP 89906944 A 19890531; JP 50659189 A 19890531