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US 5,177,501 AGranted
Electrooptical recording device
AssigneeAlcatel
InventorUlrich Seyfried
Life of this patent
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Abstract
An electro-optical recording device for use in dot matrix color recording which uses three identically configured arrays of light gates is described. The three identically configured light gate arrays are arranged relative to one another at such an angle that their optical axes intersect in the recording plane.
Claims9
An electro-optical recording device, for use in dot matrix color recording on a color sensitive medium, comprising:
- three identically configured light gate arrays disposed at an angle to one another such that optical axes of said light gate arrays intersect in a recording plane of a record carrier, each of said arrays having a plurality of light gates arranged in rows transversely to a direction of advance of said record carrier and activatable by an associated actuating circuitry;
- wherein for each of said light gate arrays a gradient index lens and an analyzer are provided, the gradient index lens being disposed between an associated light gate array and the recording plane and oriented along the optical axis of the associated light gate array, the analyzer being disposed between the associated light gate array and the gradient index lens;
- and
- wherein said three light gate arrays are enclosed in a light tight housing, and for each of said light gate arrays a polarizer is provided disposed in a cover of said housing in the optical axis of each of the light gate arrays.
1 more element
In awn electro-optical recording device, for use in dot matrix color recording on a color sensitive medium, an arrangement comprising:
- a light tight housing having a cover;
- a plurality of light gate arrays disposed inside said housing, each of said light gate arrays having a respective optical axis;
- and
- a plurality of polarizers disposed in said cover of said housing, each of said polarizers being associated with one of said plurality of light gate arrays, an associated polarizer being disposed in the optical axis of an associate light gate array.
1 more element
Dependencies are inferred from the claim text.