Lens for primarily-elongate light distribution
First Claim
1. A lens for distribution of light from a light emitter having an axis, the lens comprising:
- a refracting inner surface defining an inner cavity with a closed-perimeter opening defined in a base plane by substantially straight edge portions each adjoining a pair of curved edge portions, the refracting inner surface extending from the opening to terminate at a refracting inner end surface transverse the axis;
a refracting main output surface transverse the axis and having front and back edges and a pair of lateral edges therebetween;
a pair of refracting lateral output surfaces each extending from one of the main-output-surface lateral edges toward the base plane, the lateral output surfaces being configured to refract a portion of lateral light away from the axis; and
a reflecting surface positioned outwardly of and around the inner surrounding surface to receive substantially all forward and rearward light and a base-plane-adjacent portion of lateral light refracted by the inner surrounding surface for total internal reflection (TIR) toward the main output surface.
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Accused Products
Abstract
A lens for a primarily-elongate distribution of light from a light emitter having an axis with a lens base being substantially normal to the axis. The lens includes a substantially-rectangular emitter opening to a cavity defined by a refracting inner surface. The lens further includes a refracting main output surface transverse the axis and a reflecting surface extending from the lens base away from the axis outwardly of and around the inner surface. The reflecting surface receives substantially all forward and rearward light and a portion of lateral light refracted by the inner surface for total internal reflection (TIR) toward the main output surface which refracts such light into the elongate distribution. The lens is configured such that the other portion of the lateral light exits the lens away from the axis for wide-angle distribution along the elongate distribution.
206 Citations
36 Claims
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1. A lens for distribution of light from a light emitter having an axis, the lens comprising:
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a refracting inner surface defining an inner cavity with a closed-perimeter opening defined in a base plane by substantially straight edge portions each adjoining a pair of curved edge portions, the refracting inner surface extending from the opening to terminate at a refracting inner end surface transverse the axis; a refracting main output surface transverse the axis and having front and back edges and a pair of lateral edges therebetween; a pair of refracting lateral output surfaces each extending from one of the main-output-surface lateral edges toward the base plane, the lateral output surfaces being configured to refract a portion of lateral light away from the axis; and a reflecting surface positioned outwardly of and around the inner surrounding surface to receive substantially all forward and rearward light and a base-plane-adjacent portion of lateral light refracted by the inner surrounding surface for total internal reflection (TIR) toward the main output surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lens for distribution of light from a light emitter having an axis, comprising:
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an inner cavity defined by a refracting inner surface extending from an opening into the lens cavity with a closed-perimeter opening having substantially straight edge portions each adjoining a pair of curved edge portions; a refracting main output surface transverse the axis; and a reflecting surface extending from the base plane away from the axis outwardly of and around the inner surface and receiving substantially all forward and rearward light and a portion of lateral light refracted by the inner surface for total internal reflection (TIR) toward the main output surface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification