Optical lens and backlight module incorporating the same
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United States of America Patent
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Sep 29, 2015
Grant Date -
Jan 2, 2014
app pub date -
Jun 28, 2013
filing date -
Jun 29, 2012
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Abstract
An optical lens is adapted for used in a light source that has an optical axis, and includes a light-entering surface, a light-exiting surface, and a modified reflection surface. The light-entering surface has two first ends. The light-exiting surface defines a light-exiting surface profile that is concave toward the light source and that has two second ends. The modified reflection surface defines two modified reflection surface profiles. Each of the first ends is connected to a corresponding one of the second ends by a corresponding one of the modified reflection surface profiles. The modified reflection surface profiles are concave in the same direction as the light-exiting surface profile.
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