Coupling lens, illuminating device, and electronic device
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United States of America Patent
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Dec 29, 2015
Grant Date -
Oct 13, 2011
app pub date -
Dec 15, 2009
filing date -
Dec 17, 2008
priority date (Note) -
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Abstract
A coupling lens for coupling first light having a first wavelength from a first light source with a second light having a second wavelength from a second light source disposed adjacent to the first light source in substantially the same direction includes a first surface disposed to face the first and second light sources, the first surface including a first region transmitting the first light and having a first region curvature and a second region transmitting the second light and having a second region curvature, and a second surface opposite to the first surface and having a second-surface curvature. A position of a center of the first region curvature differs from a position of a center of the second region curvature. A center of the second surface curvature and the center of the first region curvature are disposed on an optical axis of the first or second light source.
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