| 摘要 |
PROBLEM TO BE SOLVED: To obtain a bright projected video while reducing aberration, miniaturizing a condensing lens and miniaturizing a projector as a whole by making an emission diaphragm very close to a point light source. SOLUTION: The projector 1 includes: the point light source 20 equipped with a fluorescence emitting body 9 arranged on the end face 4b of an optical fiber 4 for propagating exciting light L and excited by the exciting light L to emit fluorescence L<SB>1</SB>; a condensing optical system 10 for condensing the fluorescence L<SB>1</SB>emitted from the point light source 20; a reflection type display element 11 for reflecting the fluorescence L<SB>1</SB>condensed by the condensing optical system 10 and superposing a video signal thereon; and the emission diaphragm 12 for converging the fluorescence L<SB>2</SB>on which the video signal is superposed by the reflection type display element 11. The emission diaphragm 12 and the point light source 20 are arranged side by side near the front side focal plane of the condensing optical system 10. COPYRIGHT: (C)2007,JPO&INPIT
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