Video display apparatus

Details Video display apparatus Video display apparatus

1996-01-24

1997-08-12

Malloy, Daniel P.

Optical: systems and elements

Projection screen

With lens

359459, 362 1, 362800, 362806, 362812, F21V 2900

Patent

active

056571593

ABSTRACT:
A video display apparatus has a dot matrix of LEDs mounted on an LED matrix board, and a unitary reflecting member made of metal such as aluminum or the like mounted on the LED matrix board. The reflecting member has slanted reflecting surfaces disposed vertically one on each side of each of the LEDs for reflecting light emitted from the LEDs with narrow vertical directivity. The video display apparatus can provide a wide angle of view in the horizontal direction, and a narrow angle of view in the vertical direction for preventing light from being scattered in the vertical direction to maintain a desired level of luminosity.

REFERENCES:
patent: 4630180 (1986-12-01), Muraki et al.
patent: 5390093 (1995-02-01), Himeno et al.
patent: 5400228 (1995-03-01), Kao
patent: 5473469 (1995-12-01), Magocs et al.

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