Invention Grant
US08354790B2 Light source unit which shines visible excitation light onto phosphors on a rotatable base material, and projector including the light source
有权
将可见激发光照射到可旋转基材上的磷光体上的光源单元和包括该光源的投影仪
- Patent Title: Light source unit which shines visible excitation light onto phosphors on a rotatable base material, and projector including the light source
- Patent Title (中): 将可见激发光照射到可旋转基材上的磷光体上的光源单元和包括该光源的投影仪
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Application No.: US12464989Application Date: 2009-05-13
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Publication No.: US08354790B2Publication Date: 2013-01-15
- Inventor: Masakuni Iwanaga
- Applicant: Masakuni Iwanaga
- Applicant Address: JP Tokyo
- Assignee: Casio Computer Co., Ltd.
- Current Assignee: Casio Computer Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz, Goodman & Chick, PC
- Priority: JP2008-127947 20080515
- Main IPC: H01J1/62
- IPC: H01J1/62 ; H01J63/04 ; F21V21/30
Abstract:
A projector comprises a light source unit 63, a display device, a cooling fan, a light source side optical system for guiding light from the light source unit 63 to the display device, a projection side optical system for projecting an image emitted from the display device on to a screen, and a projector control unit for controlling the light source unit 63 and the display device. In addition, this light source unit 63 has a plurality of fan-shaped segment areas on a circular transparent base material 130 which can be controlled to rotate, layers 131 of different phosphors which emit light of predetermined wavelength bands by receiving excitation light being disposed on at least two of the segment areas on the transparent base material 130, and comprises an excitation light source 72 which shines excitation light within a visible light wavelength band on to the phosphors.
Public/Granted literature
- US20090284148A1 LIGHT SOURCE UNIT AND PROJECTOR Public/Granted day:2009-11-19
Information query
