Title:
カップリングレンズ、照明装置、及び電子機器
Document Type and Number:
Japanese Patent JP5228878
Kind Code:
B2
Abstract:
A coupling lens for coupling first light having a first wavelength from a first light source with a second light having a second wavelength from a second light source disposed adjacent to the first light source in substantially the same direction includes a first surface disposed to face the first and second light sources, the first surface including a first region transmitting the first light and having a first region curvature and a second region transmitting the second light and having a second region curvature, and a second surface opposite to the first surface and having a second-surface curvature. A position of a center of the first region curvature differs from a position of a center of the second region curvature. A center of the second surface curvature and the center of the first region curvature are disposed on an optical axis of the first or second light source.
Inventors:
Yoshitaka Takahashi
Hiroshi Akiyama
Hiroshi Akiyama
Application Number:
JP2008321135A
Publication Date:
July 03, 2013
Filing Date:
December 17, 2008
Export Citation:
Assignee:
株式会社リコー
International Classes:
G02B19/00
Domestic Patent References:
| JP2004341107A | ||||
| JP2004341108A | ||||
| JP200826793A | ||||
| JP2006189573A | ||||
| JP2001154607A | ||||
| JP2002207110A |
Attorney, Agent or Firm:
Shogo Honda
Toru Kabayama
Toru Kabayama