Invention Grant
- Patent Title: Illumination light source device and projector provided with the same, and control method of the projector
- Patent Title (中): 照明光源设备和投影机配备相同，以及投影机的控制方法
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Application No.: US14011937Application Date: 2013-08-28
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Publication No.: US09250506B2Publication Date: 2016-02-02
- Inventor: Tatsuya Takahashi , Kazuhiro Fujita
- Applicant: Tatsuya Takahashi , Kazuhiro Fujita
- Applicant Address: JP Tokyo
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-198147 20120910; JP2013-000938 20130108
- Main IPC: G03B21/20
- IPC: G03B21/20 ; F21V9/08 ; G02B27/10 ; G03B33/08
Abstract:
An illumination light source device, comprising: a light path junction member which splits light emitted from a light source into a first light path emitting excitation light for phosphor and a second light path irradiating illumination light; a first diffuser disposed in the first light path; and a second diffuser disposed in the second light path, the second diffuser having a diffusion degree larger than that of the first diffuser.
Public/Granted literature
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