Title:
MANUFACTURING PROCESS OF POLARIZING LENS AND MOLD FOR THE MANUFACTURE
Document Type and Number:
Japanese Patent JP3893411
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polarizing lens capable of insuring a stable uniformity of a lens product owing to making a strain formation of a molded lens difficult by making a density homogeneous together with by capable of securely positioning a polarizing film and arranging it to the mold, and a mold used for it.
SOLUTION: The method for manufacturing the polarizing lens comprises steps of hot pressing the polarizing film 2 formed as a shape corresponding to a movable part 12 to make a curved shape fitting to a curve of the lens, of making a sunk hole H by going the movable part 12 down from the face of the lens curve, of inserting the polarizing film 2 formed to the curved shape into the sunk hole H and closing the mold 1. Next, the step comprises filling a resin M at a molten state for molding the lens into a runner 13a connecting to the mold 1, injecting the resin into a cavity of the mold 1 from a gate 13 and taking out a lens prime Lb connecting and unifying the polarizing film 2 when the molding resin M is cured.
Inventors:
Takeo Yukio
Application Number:
JP2003123775A
Publication Date:
March 14, 2007
Filing Date:
April 28, 2003
Export Citation:
Assignee:
Takeo Yukio
Akio Mikami
Akio Mikami
International Classes:
B29C45/14; G02C7/02; B29C33/30; B29C37/00; B29C39/10; B29C43/02; B29C43/36; B29C45/36; B29D11/00; B29C43/18; B29L11/00; (IPC1-7): B29C45/14; B29C45/36; G02C7/02; //B29L11:00
Domestic Patent References:
| JP2004246157A |
Foreign References:
| DE904345B |
Attorney, Agent or Firm:
Koji Togawa