Title:
光学部品の度数の修正用円盤
Document Type and Number:
Japanese Patent JP2009540347
Kind Code:
A
Abstract:
A disk enabling modification of the power of an optical component consists of a Fresnel lens. The disk is initially formed with a general rounded shape which corresponds to the shape of the optical component. In this way, the disk does not lose its shape or does not lose it very much when it is applied against the component. It does not cause image distortion or optical aberration when an object is observed through the component provided with the disk. Such a disk is particularly adapted to obtain correction of ametropia or to a solar mask initially lacking optical power.
Inventors:
Bruno Fermizier
Francois Guillotmon
Matthew Cosher
Sylvie Maze
Francois Guillotmon
Matthew Cosher
Sylvie Maze
Application Number:
JP2009513733A
Publication Date:
November 19, 2009
Filing Date:
May 29, 2007
Export Citation:
Assignee:
Essilor Internacional (Company General Redopteic)
International Classes:
G02B3/08; G02B5/18; G02C7/02; A63B33/00
Domestic Patent References:
| JPH063630A | 1994-01-14 | |||
| JPH0232301A | 1990-02-02 | |||
| JPH08286157A | 1996-11-01 | |||
| JPH07198909A | 1995-08-01 | |||
| JPH063630A | 1994-01-14 | |||
| JPH0232301A | 1990-02-02 | |||
| JP2001228309A | 2001-08-24 |
Foreign References:
| US3904281A | 1975-09-09 | |||
| US4070105A | 1978-01-24 | |||
| WO1999018457A2 | 1999-04-15 | |||
| US4146306A | 1979-03-27 | |||
| US4960326A | 1990-10-02 | |||
| WO1986006846A1 | 1986-11-20 |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro