Optics: measuring and testing – By shade or color – Trichromatic examination
Patent
1996-05-08
1998-04-14
McGraw, Vincent P.
Optics: measuring and testing
By shade or color
Trichromatic examination
356407, 356419, 250226, G01J 351
Patent
active
057399158
ABSTRACT:
An electro-optical system is devised for scanning a color document into electrical signals for reproduction of the color document. The electro-optical system comprises a white light source for generating a beam of white light for illuminating the color document being scanned. A self-focus lens array consisting of at least a first row, a second row, and a third row of rod lenses is used to focus the reflected light from the color document onto a linear photosensor array. To separate the reflected light into RGB components, a first strip of red filter film is attached to one end of the first row of rod lenses; a second strip of green filter film is attached to one end of the second row of rod lenses; and a third strip of blue filter film is attached to one end of the third row of rod lenses. The light passing through the self-focus lens array causes the linear photosensor array to generate electrical signals representative of the amounts of the red, green, and blue components in the reflected light. The color filter films are low-cost and easy to assemble, allowing the manufacture cost for the electro-optical system to be significantly reduced.
Chuang Hsiu-Hua
Gau Jen-Jr
McGraw Vincent P.
United Microelectronics Corp.
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