Title:
照明光学装置及びプロジェクター
Document Type and Number:
Japanese Patent JP7243529
Kind Code:
B2
Abstract:
An illumination optical apparatus includes a light source apparatus that outputs light in a first direction along an illumination optical axis and a homogenizer. The light source apparatus includes first to fourth light exiting sections via which first to fourth color light fluxes exit. The homogenizer includes a first array set, a second array set, a third array set, a fourth array set, and a superimposing lens. The array sets each include a pair of lens arrays, and at least one of the array sets inclines with respect to an imaginary plane perpendicular to the illumination optical axis in such a way that a first area is shifted in the first direction from a second area the distance from which to the illumination optical axis is longer than the distance from the first area to the illumination optical axis.
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Inventors:
Akiyama Koichi
Application Number:
JP2019157073A
Publication Date:
March 22, 2023
Filing Date:
August 29, 2019
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G03B21/14; G02B5/20; G02F1/13357; G03B21/00; H04N5/74; H04N9/31
Domestic Patent References:
| JP2006308714A | ||||
| JP2007212496A | ||||
| JP2019045550A |
Foreign References:
| WO2007032422A1 | ||||
| WO2012086011A1 | ||||
| WO2006100857A1 | ||||
| US20130100419 |
Attorney, Agent or Firm:
Patent Attorney Corporation Kinoshita Intellectual Property Office