Title:
光学素子の製造方法
Document Type and Number:
Japanese Patent JP4849900
Kind Code:
B2
Abstract:
An optical element has a marker provided in the form of an optical fault at a predetermined location in the effective optical area thereof for positioning. The optical fault is a marker 1a provided at a specific location on the effective optical area of the optical element 1 preferably in the form of a projection, a recess, a tinted portion, a different refraction portion, an air bubble, or a particle on or in the optical element 1. More preferably, the marker 1a is located at or around the center of the optical element 1 and its area size is not greater than 0.4% of the effective optical area of the lens 1.
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Inventors:
Mitsuharu Matsumoto
Keiichi Kuramoto
Nobuhiko Hayashi
Hitoshi Hirano
Keiichi Kuramoto
Nobuhiko Hayashi
Hitoshi Hirano
Application Number:
JP2006023285A
Publication Date:
January 11, 2012
Filing Date:
January 31, 2006
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G02B7/00; G02B3/00; G02B5/18; G02B5/32
Domestic Patent References:
| JP10274705A | ||||
| JP2005031285A | ||||
| JP2002258024A | ||||
| JP9024522A | ||||
| JP2002192500A |
Attorney, Agent or Firm:
Table of contents Makoto