Title:
【発明の名称】自動較正カラー結像装置用分光装置
Document Type and Number:
Japanese Patent JPH04500593
Kind Code:
A
Abstract:
Spectrometer apparatus, for self-calibrating a color image scanner of the line scanner or area scanner type, comprises a member, having an optical slit, movable into position on an optical axis of the scanner between its polychromatic light source and its focusable lens in a plane occupied by a color image when it is scanned. A diffraction grating is similarly movable onto the optical axis, a given distance from an image sensor of the scanner. The light source illuminates the slit and the diffraction grating disperses transmitted polychromatic light according to its wavelength, forming duplicate spectra off-axis across respective halves of the image sensor, with longer wavelengths being diverted to respectively higher angles.
Inventors:
Mirci, James Roger
Application Number:
JP50118590A
Publication Date:
January 30, 1992
Filing Date:
October 30, 1989
Export Citation:
Assignee:
Eastman Kodak Company
International Classes:
G01J3/36; G01J3/04; G01J3/28; H04N1/00; H04N1/04; H04N1/19; H04N1/46; G01J3/40; (IPC1-7): G01J3/36; H04N1/04
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)