Safety application of holographic material

Details Safety application of holographic material Safety application of holographic material

1992-02-25

1993-08-24

Lerner, Martin

Optical: systems and elements

Holographic system or element

359522, 359523, G02B 532, G03H 100

Patent

active

052393968

ABSTRACT:
A holographic diffraction media is disposed on a physical object in a highly visible position so as to enhance the human visibility of the object, and therefore the safety of humans using or associated with the object. The media may be a piece of thin plastic (polyester) film with an adhesive backing, with a release paper that is removed when it is desired to attach the film to the object. The object may be a road marker, road sign, a paved road itself (i. e. the holographic media may be a lane divider or a side strip for the road), a spoked wheel, a tire with a hubcap or wheel cover, a propeller, a safety vest, or a jogging shoe (affixed to the upper heel exterior of the shoe). The holographic diffraction media is inexpensive, light weight, and is more visible in environments with low and/or diffuse light than are reflectors.

REFERENCES:
patent: 4681324 (1987-07-01), Karabed et al.
patent: 4838965 (1989-06-01), Bussard
patent: 4878719 (1989-11-01), Wreede et al.
patent: 4893887 (1990-01-01), Coates
patent: 4913504 (1990-04-01), Gallagher
patent: 4947299 (1990-08-01), Lin

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