Light-emitting device for image taking and image-taking apparatus having same
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United States of America Patent
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Sep 9, 2008
Grant Date -
Sep 21, 2006
app pub date -
Mar 1, 2006
filing date -
Mar 17, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light-emitting device is disclosed which enables efficient use of luminous flux and achieves a desired light emission characteristic. The light-emitting device has an optical member which has an emergence surface and a plurality of optical portions, each of the optical portions including a first surface which directs light incident thereon to the emergence surface. The plurality of first surfaces are inclined on the same side with respect to the emergence surface. The light-emitting device also has a light guiding member which directs light from a light source to the plurality of optical portions from one side of a direction in which the plurality of optical portions are arranged.
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