Optic for LEDs and other light sources
First Claim
Patent Images
1. An apparatus comprising:
- an LED light source;
a thermal management element coupled to the LED light source to manage heat generated by the LED light source;
a primary reflector with at least one reflective surface oriented to collect light from the LED light source and direct collected light into a first reflected beam;
at least one central inclined reflector surface disposed to receive light from the LED light source;
at least one corresponding angled mirror surface disposed to collect light from the central inclined reflector surface and to direct the collected light into a second reflected beam, andat least two inclined central reflector surfaces and at least two corresponding angled mirror surfaces, where the primary reflector has a first elliptical surface characterized by a first and second focus, where each inclined central reflector surface has a second surface, and where the LED light source is disposed at or near the first focus of the first elliptical surface of the primary reflector, where the shape and angular orientation of each of the inclined central reflector surfaces is defined by the second elliptical surface, and where each of the angled mirror surfaces is defined by a normal to the angled mirrored surface which normal is a bisector of the between a first ray reflected from the corresponding central inclined reflector surface to the corresponding angled mirror surface and a second ray reflected from the angled mirror surface to the second focus of the first elliptical surface of the primary reflector.
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Accused Products
Abstract
An LED lighting device comprises an LED light source; a thermal management element coupled to the LED light source to manage heat generated by the LED light source; a primary reflector with at least one reflective surface oriented to collect light from the LED light source and direct collected light into a first reflected beam; at least one central inclined reflector surface disposed to receive light from the LED light source; and at least one corresponding angled mirror surface disposed to collect light from the central inclined reflector surface and to direct the collected light into a second reflected beam (see FIG. 1).
52 Citations
21 Claims
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1. An apparatus comprising:
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an LED light source; a thermal management element coupled to the LED light source to manage heat generated by the LED light source; a primary reflector with at least one reflective surface oriented to collect light from the LED light source and direct collected light into a first reflected beam; at least one central inclined reflector surface disposed to receive light from the LED light source; at least one corresponding angled mirror surface disposed to collect light from the central inclined reflector surface and to direct the collected light into a second reflected beam, and at least two inclined central reflector surfaces and at least two corresponding angled mirror surfaces, where the primary reflector has a first elliptical surface characterized by a first and second focus, where each inclined central reflector surface has a second surface, and where the LED light source is disposed at or near the first focus of the first elliptical surface of the primary reflector, where the shape and angular orientation of each of the inclined central reflector surfaces is defined by the second elliptical surface, and where each of the angled mirror surfaces is defined by a normal to the angled mirrored surface which normal is a bisector of the between a first ray reflected from the corresponding central inclined reflector surface to the corresponding angled mirror surface and a second ray reflected from the angled mirror surface to the second focus of the first elliptical surface of the primary reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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generating light from an LED light source; reflecting light from the LED light source by a primary reflector with at least one reflective surface oriented to collect light from the LED light source and direct collected light into a first reflected beam; reflecting light from the LED light source by at least one central inclined reflector surface to at least one corresponding peripherally positioned angled mirror surface; and reflecting light from the angled mirror surface into a second reflected beam, where reflecting light from the LED light source by a primary reflector comprises reflecting light from the LED light source, which is disposed at or near a first focus of a first elliptical surface of the primary reflector, and which light is reflected by the first elliptical surface of the primary reflector, where reflecting light from the LED light source by at least one central inclined reflector surface comprises reflecting light by at least two second elliptical surfaces of two corresponding central inclined reflector surfaces to at least two corresponding angled mirror surfaces, and where reflecting light from the angled mirror surface into a second reflected beam comprises reflecting light from the angled mirror surface to a second focus of the first elliptical surface of the primary reflector. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification