Electromagnetically operated linearly sliding shutter for a vari

Details Electromagnetically operated linearly sliding shutter for a vari Electromagnetically operated linearly sliding shutter for a vari

1995-12-18

1998-02-24

Bayerl, Raymond J.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 32, 345 33, 345 84, 345108, 345111, E09F 0930

Patent

active

057215642

ABSTRACT:
An electromagnetically operated, linearly sliding shutter is provided for a light source emanating from a fiber optic light guide, used for example, in a variable display such as those providing information to motorists on highways. For such a display a plurality of shutters in an array is provided with individual shutters being operable under computer control to occlude or allow passage of light in a predetermined pattern. The shutter may include a base unit having bores to hold the end of the fiber optic guide and control electromagnetic coils, and a shutter unit having a slide movable into and out of the path of light from the guide. The shutter unit may be sealed against entry of dust and dirt.

REFERENCES:
patent: 4163332 (1979-08-01), Salam
patent: 4794391 (1988-12-01), Costa et al.
patent: 4819357 (1989-04-01), Salam
patent: 5160921 (1992-11-01), Killinger
patent: 5337077 (1994-08-01), Browne
patent: 5351065 (1994-09-01), Killinger

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