Rear indicating device for an automobile

Details Rear indicating device for an automobile Rear indicating device for an automobile

1993-06-08

1997-06-03

Husar, Stephen F.

Illumination

Sound equipment illuminator

362 26, 362293, B60Q 126

Patent

active

056347081

ABSTRACT:
A rear indicator device for an automobile arranged inwardly of and adjacent to a rear window. The device includes a light guide plate 2, a hologram 2 arranged in the light guide plate 2 and an irregular shaped prism having a first section having an apex angle .phi.1 at which the light beam from a light source 5 is subjected to a refraction so that the light beam is flattened. The flattened beam is again introduced into the prism at a second section which is in face to face contact with the light guide plate 2, so that the light beam is transmitted inside the light guide plate 2 toward the hologram 3, whereat the light beam is introduced into the hologram at a predetermined angle of incidence, so that a horizontal light beam of a predetermined wave length is obtained in a rear direction of the automobile to indicate the braking of the automobile.

REFERENCES:
patent: 4892369 (1990-01-01), Moss
patent: 5101193 (1992-03-01), Smith et al.
patent: 5106174 (1992-04-01), Smith

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