Title:
Light emitting device and image display system
Document Type and Number:
Japanese Patent JP6331488
Kind Code:
B2
Abstract:
A light output apparatus includes a light source that emits light shoving different light orientation distributions in a first direction and a second direction and having a high optical intensity area larger in the first direction than in the second direction, a collimator lens that parallelizes the light emitted from the light source, and a Powell lens that spreads the parallelized light from the collimator lens in the first direction, maintains the parallelized direction provided by the collimator lens in the second direction, and outputs the resultant light along a third direction that is perpendicular to the first and second directions and serves as a central axis.
Inventors:
Toshihiko Sakai
Noriyuki Hirano
Noriyuki Hirano
Application Number:
JP2014042453A
Publication Date:
May 30, 2018
Filing Date:
March 05, 2014
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G06F3/042; G02B27/00; G03B21/00; G03B21/14; G09F9/00; H04N5/74
Domestic Patent References:
| JP2012122844A | ||||
| JP5094708U | ||||
| JP2002357421A | ||||
| JP2012068892A | ||||
| JP5280943A | ||||
| JP2012014427A | ||||
| JP2012113736A |
Attorney, Agent or Firm:
Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai
Keisuke Nishida
Satoshi Nakai