Illumination – Plural light sources – With modifier
Patent
1996-12-06
1998-11-10
Husar, Stephen F.
Illumination
Plural light sources
With modifier
362336, 362338, 362800, F21V 500
Patent
active
058333550
ABSTRACT:
The present invention provides for a lamp assembly which can be utilized in overhead signaling or lighting applications such as in traffic signal lamps or illuminated overhead road signs. The assembly includes a lens that optimizes and redirects light in a desirable direction in order to meet certain regulations. The lens of the present invention is designed to power portions of light emitted from an LED while allowing other portions to pass through the lens unaided. The lens of the present invention works in combination with specific LEDs to efficiently redirect light emitted from the LEDs. The assembly includes a circuit board including a plurality of rows of LEDs and the lens, which has an exterior surface and an interior surface. The interior surface of the lens comprises a plurality of rows of horizontal bands with a single band being associated with a row of the LEDs. Each of the bands has an upper region and a lower region used to redirect some light rays downward, allow some rays to travel uninterrupted and redirect some light horizontally.
REFERENCES:
patent: 4729076 (1988-03-01), Masami et al.
patent: 4733335 (1988-03-01), Serizawa et al.
patent: 4862330 (1989-08-01), Machida et al.
patent: 5515253 (1996-05-01), Sjobom
patent: 5528474 (1996-06-01), Roney et al.
Critelli John M.
Grossman Hyman
Yang Yubo
You Chenhua
Dialight Corporation
Husar Stephen F.
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