Multi-lens light emitting diode

Details Multi-lens light emitting diode Multi-lens light emitting diode

2006-12-26

2006-12-26

Husar, Stephen F (Department: 2875)

Illumination

Light source and modifier

Plural serial lens elements or components

C362S329000, C362S331000, C362S800000, C257S079000, C257S099000, C257S098000, C257S100000

Reexamination Certificate

active

07153000

ABSTRACT:
A multi-lens LED has multiple lenses and an intermediate layer interposed between the multiple lenses in order to radiate light emitted from an LED chip in a desired direction and/or at a desired beam angle. The first lens is centered behind the LED chip when seen in the propagation direction of light. The second lens has a concave structure and surrounds the first lens. The intermediate layer is interposed between the first and second lenses, so that light emitted from the LED chip can be radiated at a wide beam angle. When provided in the form of a hemisphere, the multi-lens LED can be attached, e.g., to a wall or a ceiling for interior lighting. On the other hand, when provided in the form of a semicylinder, the multi-lens LEDs can be arranged in arrays to be used, e.g., as a light source of an LCD backlight apparatus.

REFERENCES:
patent: 3875456 (1975-04-01), Kano et al.
patent: 6896381 (2005-05-01), Benitez et al.
patent: 2005/0224829 (2005-10-01), Negley et al.
patent: 2002-19579 (2002-03-01), None
patent: 10-0405453 (2003-11-01), None

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