Peripheral optical element for redirecting light from an LED

Details Peripheral optical element for redirecting light from an LED Peripheral optical element for redirecting light from an LED

1995-11-01

1997-01-07

Ullah, Akm E.

Optical waveguides

With optical coupler

Input/output coupler

G02B 600, G02B 626, G02B 642

Patent

active

055925782

ABSTRACT:
A peripheral optical element efficiently collects light emitted by a light emitting diode (LED) to produce a high luminous intensity of emitted light within a limited viewing angle relative to an optical axis. An LED is positioned in the center of the peripheral optical element, the element comprising a base, a refractive and reflective surface, and an exiting surface. In one preferred embodiment of the present invention, the peripheral optical element is radially symmetric to form a ring element. In an alternative embodiment of the present invention an array of multiple peripheral optical elements is mounted in a frame to accommodate multiple LEDs, forming a light panel for power signaling applications.

REFERENCES:
patent: 4130343 (1978-12-01), Miller et al.
patent: 4181439 (1980-01-01), Tresch et al.
patent: 4277134 (1981-07-01), Upton, Jr.
patent: 5371347 (1994-12-01), Plesko
patent: 5519198 (1996-05-01), Plesko

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