Search International and National Patent Collections

1. (WO2010114023) METHOD FOR PRODUCING PROGRESSIVE POWER EYEGLASS LENS

Pub. No.:    WO/2010/114023    International Application No.:    PCT/JP2010/055861
Publication Date: Fri Oct 08 01:59:59 CEST 2010 International Filing Date: Thu Apr 01 01:59:59 CEST 2010
IPC: B29D 11/00
B29C 39/02
B29C 39/44
G02C 7/06
B29K 101/10
B29L 11/00
Applicants: HOYA CORPORATION
HOYA株式会社
KADOWAKI Shinichiro
門脇 慎一郎
HOSHI Yuji
星 雄治
WATANABE Ken
渡辺 研
Inventors: KADOWAKI Shinichiro
門脇 慎一郎
HOSHI Yuji
星 雄治
WATANABE Ken
渡辺 研
Title: METHOD FOR PRODUCING PROGRESSIVE POWER EYEGLASS LENS
Abstract:
Provided is a method for producing a progressive power plastic lens for eyeglasses wherein prism thinning is applied, and no cutting/grinding is required. The method comprises a lens molding die forming step to arrange a first molding die provided with a molding surface for molding one optical surface defining a progressive surface of a lens, and a second molding die provided with a molding surface for molding the other optical surface, so that the respective molding surfaces oppose each other; a filling step to fill a lens material liquid containing a monomer composition into the formed lens molding die; and a curing step to mold a lens by polymerizing and curing the filled lens material liquid; wherein the molding surface of the first molding die is formed so that the normal line at the point crossing the reference axis of the first molding die is inclined in the vertical direction with respect to the reference axis.