Remote control light transmitter employing a cylindrical lens
First Claim
1. A lens for transmitting light formed of optical material and having a front light transmitting surface, planar side surfaces, a planar top surface and a planar bottom surface, said front surface being cylindrical about an axis of curvature, said side surfaces being convergent toward a first line located rearwardly of said front surface and said top and bottom surfaces being convergent toward a second line located rearwardly of said front surface.
5 Assignments
0 Petitions
Accused Products
Abstract
A light transmitter for use in a light activated T.V. remote control system. A modified cylindrical lens having a wide horizontal dispersion angle and a reduced vertical dispersion angle is directly coupled to a light emitting diode. The resulting combination provides a controlled light dispersion suitable for transmitting to a distant receiver location.
53 Citations
16 Claims
- 1. A lens for transmitting light formed of optical material and having a front light transmitting surface, planar side surfaces, a planar top surface and a planar bottom surface, said front surface being cylindrical about an axis of curvature, said side surfaces being convergent toward a first line located rearwardly of said front surface and said top and bottom surfaces being convergent toward a second line located rearwardly of said front surface.
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5. A transmitter for transmitting light comprising a lens formed of optical material having a front surface, said front surface being cylindrical about an axis, said axis being located rewardly of said front surface;
- side surfaces;
a top surface;
a bottom surface; and
further comprising a light emitting diode located within said optical materials. - View Dependent Claims (6, 7, 8, 9, 10, 16)
- side surfaces;
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11. A lens for transmitting light formed of optical material and having a front light transmitting surface, planar side surfaces, a planar top surface and a planar bottom surface, said front surface being cylindrical about an axis of curvature, said side surfaces being convergent toward a first line located rearwardly of said front surface and said top and bottom surfaces being convergent toward a second line located rearwardly of said front surface and means for mounting a light emitting diode within said optical material.
- 12. A lens for transmitting light formed of optical material and having a front light receiving surface, planar side surfaces, a planar top surface, a planar bottom surface, and a rear surface, said front surface being cylindrical about an axis of curvature, said side surfaces subtending the length of said front surface and said top and bottom surfaces subtending the arc of said front surface, said side surfaces being convergent toward a first line located rearwardly of said front surface, and said top and bottom surfaces being convergent toward a second line located rearwardly of said rear surface, and said rear surface having a cavity therein for receiving a light emitting diode.
Specification