Lens for preferential-side distribution
First Claim
1. A lens for distribution of light from a light emitter having an axis, the lens comprising a light-distribution wall having a base, a light-receiving inner surface and an outward surface, the light-distribution wall being configured for internal redirection of light entering the wall through the inner surface toward the outward surface for total internal reflection therefrom toward a main light-output surface which is transverse the axis, the base being bordered by inward and outward closed-perimeter edges each comprising at least four substantially straight edge portions joined by concave edge portions, the light-receiving inner surface defining an emitter cavity and extending from the base inward edge forming a closed-perimeter opening into the emitter cavity, the outward surface extending from the base outward edge toward the main light-output surface.
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Accused Products
Abstract
A lens for distribution of light from a light emitter having an axis, the lens including a (1) base forming a substantially rectangular opening to an emitter cavity defined by an inner surface, (2) a main output surface transverse the axis, (3) a reflecting surface positioned to reflect light received from the inner surface toward the main output surface, the reflecting surface including front and back curvatures and a pair of substantially-identical lateral curvatures each adjoining the front and back curvatures. Configuration of the lateral curvatures differs from configurations of the front and back curvatures, which differ from one another.
211 Citations
43 Claims
- 1. A lens for distribution of light from a light emitter having an axis, the lens comprising a light-distribution wall having a base, a light-receiving inner surface and an outward surface, the light-distribution wall being configured for internal redirection of light entering the wall through the inner surface toward the outward surface for total internal reflection therefrom toward a main light-output surface which is transverse the axis, the base being bordered by inward and outward closed-perimeter edges each comprising at least four substantially straight edge portions joined by concave edge portions, the light-receiving inner surface defining an emitter cavity and extending from the base inward edge forming a closed-perimeter opening into the emitter cavity, the outward surface extending from the base outward edge toward the main light-output surface.
- 17. A lens for preferential-side distribution of light from a light emitter having an axis, the lens comprising a light-distribution wall having a base, an inner surface and an outward surface, the light-distribution wall being configured for internal redirection of light entering the wall through the inner surface toward the outward surface for total internal reflection therefrom toward a main light-output surface which directs light toward the preferential side, the base being bordered by inward and outward closed-perimeter edges each comprising at least four substantially straight edge portions joined by concave edge portions, the inner surface defining an emitter cavity and extending from the base inward closed-perimeter edge forming a closed-perimeter opening into the emitter cavity, the outward surface extending from the base outward edge toward the main output surface and including front and back curvatures and a pair of substantially-identical lateral curvatures each adjoining the front and back curvatures, the front and back curvatures extending from longer sides of the base edge than do the lateral curvatures.
- 25. A lens for a distribution of light from an LED light emitter having an axis, the lens comprising a light-distribution wall having a base, a light-receiving inner surface and an outward surface, the light-distribution being configured for internal redirection of light entering the wall through the inner surface toward the outward surface for total internal reflection therefrom toward a main output surface which is transverse the axis and directs light toward the preferential side, the base being bordered by inward and outward closed-perimeter edges each comprising at least two pairs of substantially straight edgeportions joined by concave edge portions, the substantially straight edge portions of one pair of at least one of the edges being longer than the substantially straight edge portions of another pair of such at least one of the edges, the light-receiving inner surface defining an emitter cavity and extending from the base inward closed-perimeter edge which forms a closed-perimeter opening into the emitter cavity, the outward surface extending from the base outward closed-perimeter edge toward the main output surface.
Specification