Title:
OPTICAL ELEMENT, OPTICAL SYSTEM, AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/098035
Kind Code:
A1
Abstract:
Provided is an optical element in which the penetration of light is uniformly reduced from a central portion toward a peripheral portion, the optical element comprising, on one surface of a transparent substrate, a light-absorbing section formed from a material that absorbs either part of or all of visible light, and having a thickness that uniformly increases from a central portion toward a peripheral portion, and a light-penetrating section formed from a material through which visible light penetrates and being layered on the light-absorbing section, and, on the other surface of the transparent substrate, a transparent resin layer that is formed from a material through which visible light penetrates. Therein, the light-absorbing section, the light-penetrating section and the transparent resin layer are all formed from a resin material.
Inventors:
NAKAYAMA MOTOSHI (JP)
NOMURA TAKUJI (JP)
ONO KENSUKE (JP)
NOMURA TAKUJI (JP)
ONO KENSUKE (JP)
Application Number:
PCT/JP2013/083637
Publication Date:
June 26, 2014
Filing Date:
December 16, 2013
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
G02B5/00; G02B1/10; G02B1/11; G02B13/00
Foreign References:
| JP2009521722A | 2009-06-04 | |||
| JPH11231209A | 1999-08-27 | |||
| JP2008275772A | 2008-11-13 | |||
| JP2010237544A | 2010-10-21 | |||
| JP2012008581A | 2012-01-12 | |||
| JP2011138043A | 2011-07-14 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
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