Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROGRESSIVE-POWER LENS
Document Type and Number:
Japanese Patent JP2011070234
Kind Code:
A
Abstract:

To provide an inner face progressive-power lens that solves defects such as thinness of a lens or appearances in the inner face progressive-power lens with a progressive refraction surface on a refractive surface of a side of augen.

A refractive surface 11 of a side of augen of a distant portion is concave and at least part of a refractive surface 3 of the side of the augen of a near portion is a convex region 31 where one or both of principal meridians of the surface are convex.


More Like This:
WO/1992/011558BIFOCAL OPHTHALMIC LENS CONSTRUCTED FROM BIREFRINGENT MATERIAL
JP2010515551Substitute optics: Combination and matching of optics to maximize binocular vision
WO/2024/109486MYOPIA CONTROL CONTACT LENS FOR CHILDREN
Inventors:
KAGA TADAYUKI
SHINOHARA SHUNEI
Application Number:
JP2011005602A
Publication Date:
April 07, 2011
Filing Date:
January 14, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SEIKO EPSON CORP
International Classes:
G02C7/06
Domestic Patent References:
JPH06118353A1994-04-28
JP2000066148A2000-03-03
JPS57139718A1982-08-28
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka



 
Previous Patent: IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

Next Patent: CLEANING DEVICE FOR IMAGE FORMING APPARATUS