Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR PRODUCING PROGRESSIVE POWER EYEGLASS LENS
Document Type and Number:
WIPO Patent Application WO/2010/114023
Kind Code:
A1
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.

Inventors:
KADOWAKI SHINICHIRO (JP)
HOSHI YUJI (JP)
WATANABE KEN (JP)
Application Number:
PCT/JP2010/055861
Publication Date:
October 07, 2010
Filing Date:
March 31, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HOYA CORP (JP)
KADOWAKI SHINICHIRO (JP)
HOSHI YUJI (JP)
WATANABE KEN (JP)
International Classes:
B29D11/00; B29C39/02; B29C39/44; G02C7/06; B29K101/10; B29L11/00
Foreign References:
JP2008158494A2008-07-10
JP2008137336A2008-06-19
JP2005103915A2005-04-21
JP2000263567A2000-09-26
JP2000088700A2000-03-31
Other References:
See also references of EP 2415588A4
Attorney, Agent or Firm:
Shin-yu International Patent Firm (JP)
Patent business corporation Nobutomo international patent firm (JP)
Download PDF: