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Display apparatus for elevator car

  • US 4,577,177 A
  • Filed: 05/31/1984
  • Issued: 03/18/1986
  • Est. Priority Date: 06/01/1983
  • Status: Expired due to Term
First Claim
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1. An apparatus for displaying image information within an elevator car, comprising a projector disposed in an elevator car and formed of a light deflector, a diminishing lens disposed on an entrance side of said light deflector, and an objective lens disposed on an exit side thereof;

  • a laser disposed on a stationary part for an elevator system including the elevator car to form a light source for generating a light beam, a signal source disposed on said stationary part to generate a modulating signal as determined by a piece of image information to be displayed, a light modulator disposed on said stationary part to modulate said light beam from said light source with said modulating signal from said signal source;

    an optical fiber for leading said modulated light beam from said light modulator to said diminishing lens included in said projector, and a set of electrical conductors for connecting said signal source to said light deflector;

    the arrangement being such that the light beam deflected by said light deflector is focussed on an inner surface of said elevator car by means of said objective lens.

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