Light emitting diode device

Details Light emitting diode device Light emitting diode device

1997-09-15

2000-04-18

Cariaso, Alan

Illumination

Light modifier

Reflector

362800, 362308, 313512, F21V 700

Patent

active

060507071

ABSTRACT:
An rectangularly shaped illumination area utilizing an LED device having a high utilization efficiency in light flux and having an economical manufacturing cost is attained. Herein a light flux emitted from an LED chip 1 and then reflected by reflective surfaces of a horn 11 toward a lens 12 is concentrated into corner FIGS. 14 located in diagonal directions of the rectangular shape 4 while another light flux emitted from the LED chip 1 and directly incident to the lens 12 is focused by the lens on an area having an elliptic FIG. 13, which is inscribed in the rectangle area 4.

REFERENCES:
patent: 3676668 (1972-07-01), Collins et al.

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