Color picture reader

  • Inventors: SUGINO OSAMU
  • Assignees: Canon Inc
  • Publication Date: February 07, 1992
  • Publication Number: JP-H0437358-A

Abstract

PURPOSE: To read color picture information on an original with high accuracy by utilizing a color decomposition element comprising a linear blazed diffraction grating and a detection means comprising three line sensors mounted on one and the same board for reading the information. CONSTITUTION: An adjustment means 104 consists of a holder 104a supporting a detection means 4, a ball screw 104b moving the holder 104a, a motor 104c moving the ball screw 104b and a control section 104d controlling the motor 104c. A scattered reflection light from a color picture on an original face 1 is scanned by a scanning means 102, the luminous flux from the scanning means 102 is collected by a projection optical system 2 and decomposed into three color lights via a linear blazed diffraction grating 3 and the image of the color picture on an original face 1 is formed respectively to three line sensors 4a, 4b, 4c. Thus, the color picture on the original face 1 is sequentially and digitally read by the detection means 4. COPYRIGHT: (C)1992,JPO&Japio

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