Apparatus for lighting a passive display

Details Apparatus for lighting a passive display Apparatus for lighting a passive display

1981-07-20

1984-06-05

Nelson, Peter A.

Illumination

Revolving

362 29, 362 30, 362307, 362311, 362341, 362355, 362356, 362362, F21V 704

Patent

active

044532008

ABSTRACT:
Apparatus for front lighting a display includes a light distributing wedge, spaced from the front of the display to be lighted, through which the display can be viewed. A light source is provided aside the wedge to direct light to an inter space between the wedge and the display. A reflective surface is provided at the wide end of the wedge to reflect light incident upon it. Thus, light from the light source is directed onto the display through various reflecting and refracting paths, including directly onto the display from the light source, reflected from the interior surface of the wedge onto the display, and refracted and reflected within the wedge to be emitted in the direction of the display.

REFERENCES:
patent: 2681634 (1954-06-01), Polley
patent: 3029334 (1962-04-01), Anderson et al.
patent: 3246133 (1966-04-01), Hensleigh
patent: 3497686 (1970-02-01), Young
patent: 3729626 (1973-04-01), Thurlow et al.
patent: 3752974 (1973-08-01), Baker et al.
patent: 3808415 (1974-04-01), Hurst
patent: 4277817 (1981-07-01), Hehr
patent: 4282560 (1981-08-01), Kringel et al.
patent: 4323952 (1982-04-01), Proske
patent: 4387414 (1983-06-01), Hensleigh

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