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US 8,011,803 B2Granted
LED automotive fog lamp
AssigneeThe Hong Kong Polytechnic University
InventorsChi Fai Cheung, Sandy To, Wing Bun Lee, Jin Bo Jiang, Wen Kui Wang
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Abstract
A fog lamp may include a Lambertian LED, a collimating lens encompassing the Lambertian LED, a collimating surface including a total internal reflective surface and encompassing the collimating lens, and a corrugated surface attached to the collimating surface at an acute angle with respect to an optic axis of the corrugated surface.
Claims20
A fog lamp, comprising:
- a Lambertian LED;
- a collimating lens encompassing said Lambertian LED;
- a collimating surface comprising a total internal reflective surface and encompassing said collimating lens;
- and
- a corrugated surface attached to said collimating surface at an acute angle with respect to an optic axis of said collimating surface.
2 more elements
A method of making a fog lamp, comprising:
- providing a Lambertian LED;
- encompassing said Lambertian LED with a collimating lens;
- encompassing said collimating lens with a collimating surface;
- and
- attaching a corrugated surface to said collimating surface at an acute angle with respect to an optic axis of said collimating surface.
2 more elements
Dependencies are inferred from the claim text.