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Patent Searching and Data


Title:
LIGHT SOURCE DEVICE AND PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2018/173284
Kind Code:
A1
Abstract:
This high-illuminance light source device allows the number of excitation light sources to be increased without enlarging a fluorescent rod provided therefor. The light source device includes: a fluorescent rod (101) containing a fluorescent substance; at least one light-guide element (103) comprising a first end face, a second end face having a smaller surface area than that of the first end face, and a lateral face section whereby incoming light from the first end face is reflected and focused onto the second end face, the second end face being optically joined to a face other than the light-emitting face of the fluorescent rod; a plurality of excitation light sources (12) disposed so as to face the first end face of the light-guide element (103); and a dichroic film (105) provided on a face other than the light-emitting face of the fluorescent rod (101), and having the characteristics of transmitting excitation light and reflecting fluorescent light.

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Inventors:
KATO ATSUSHI (JP)
TAKAHASHI ISAO (JP)
NAGASE NORIKO (JP)
Application Number:
JP2017/012134
Publication Date:
September 27, 2018
Filing Date:
March 24, 2017
Export Citation:
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Assignee:
NEC DISPLAY SOLUTIONS LTD (JP)
International Classes:
F21S2/00; F21V8/00; G03B21/14
Foreign References:
JP2008536266A2008-09-04
JP2014010181A2014-01-20
JP2006511056A2006-03-30
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (JP)
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