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Optical coordinate position input device

  • US 4,742,221 A
  • Filed: 05/19/1986
  • Issued: 05/03/1988
  • Est. Priority Date: 05/17/1985
  • Status: Expired due to Fees
First Claim
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1. An optical coordinate input device comprising:

  • a plurality of light emitting elements arranged in a row;

    a plurality of light receiving elements arranged in a row opposite the row of light emitting elements so as to form a plurality of light rays from each light emitting element to each corresponding light receiving element;

    a holding frame for shielding and holding said row of light receiving elements in proper alignment to receive light from the corresponding light emitting elements, said frame being formed by a front wall having a plurality of light receiving openings each for receiving light ray from a corresponding light emitting element, a row of containing cavities in an interior portion of the frame in back of said front wall wherein a respective light receiving element is inserted in each one of said cavities, and a plurality of pressing portions projecting from a rear wall of said frame each for elastically pressing a rear part of a respective light receiving element into a corresponding cavity so that it is integrally fitted therein for proper alignment of the light receiving element; and

    a circuit substrate mounted on the rear wall of said holding frame for electrically connecting respective terminals from each of the light receiving elements to an operating circuit.

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