LED RETROFIT LENS FOR FLUORESCENT TUBE
First Claim
1. A lens, comprising:
- an elongated body running along a longitudinal axis, said body comprising at least one light entry surface, at least one exit surface, and at least one mount surface defining a mounting plane;
wherein said body is shaped to redirect at least some light that impinges said light entry surface in a direction away from a normal axis that is perpendicular to said mounting plane.
4 Assignments
0 Petitions
Accused Products
Abstract
Light fixtures having light bar elements therein. In order to mimic the size and appearance of fluorescent bulbs in existing troffer-style and surface-mount fixtures, LEDs are may be arranged on light bars with integrated lenses to both diffuse the light and shape the output beam. One or more LEDs can be mounted, sometimes in clusters, along the length of a base of the light bar which can then be inserted into a fixture. An elongated lens is mounted to the base over the LEDs so that light emitted from the LEDs interacts with the lens before it escapes the fixture. These elongated lenses may be extruded from a diffusive material, for example, and can be shaped in various ways. For example, the lenses may be shaped to disperse more light to the sides, i.e., in a direction away from a normal axis that is perpendicular to the base.
16 Citations
24 Claims
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1. A lens, comprising:
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an elongated body running along a longitudinal axis, said body comprising at least one light entry surface, at least one exit surface, and at least one mount surface defining a mounting plane; wherein said body is shaped to redirect at least some light that impinges said light entry surface in a direction away from a normal axis that is perpendicular to said mounting plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light bar, comprising:
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an elongated reflective base running along a longitudinal axis and defining a normal axis perpendicular to said base; at least one light emitter on said base; and an elongated lens on said base such that light from said at least one light emitter impinges on said lens, said lens shaped to redirect at least some light from said at least one emitter away from said normal axis. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A light fixture, comprising:
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a fixture housing; at least one light bar attached to said housing, each of said light bars comprising; an elongated reflective base running along a longitudinal axis and defining a normal axis perpendicular to said base; at least one light emitter on said base; and an elongated lens on said base such that light from said at least one light emitter impinges on said lens, said lens shaped to redirect at least some light from said at least one emitter away from said normal axis; and a control circuit to control said at least one light emitter. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification