Illumination for scanners
AssigneeEastman Kodak Company
InventorRichard A. Sharman
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Abstract
Described herein is a method and apparatus for illuminating film containing emissive interlayers wherein dichroic filters are used both to determine the excitation bandwidth for the interlayers and to prevent excitation light entering a conventional color scanner.
Claims10
Apparatus for illuminating a multilayer photographic film material carrying an image and having at least one emissive interlayer, the apparatus comprising at least one light source for supplying excitation light at a predetermined wavelength for said at least one emissive interlayer in the film material, at least one dichroic filter element is used both to direct the excitation light onto the photographic film material and to redirect an emitted light at a further predetermined wavelength from each emissive interlayer to a sensor, the at least one dichroic filter element being arranged such that the excitation light and the emitted light travel along substantially the same path in the film material.
Dependencies are inferred from the claim text.