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PHOTOGRAPHING MEANS

  • US 3,690,233 A
  • Filed: 07/29/1970
  • Issued: 09/12/1972
  • Est. Priority Date: 07/29/1970
  • Status: Expired due to Term
First Claim
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1. In a traffic monitoring system for obtaining an identifiable photograph of the facial features of a driver of a vehicle having a windshield, the combination comprising:

  • detecting means responsive to the presence of a passing vehicle to produce a signal indicating the presence of such vehicle;

    a camera comprising a shutter and loaded with a film which is sensitive to the visible deep red and the near infra-red portions of the electromagnetic spectrum;

    actuating means connected to receive said signal and responsive thereto for operating the shutter;

    flash illuminating means for producing a beam of radiant energies consisting substantially of radiations of frequencies no higher than that of the visible deep red frequencies and for directing the beam along a first line of sight wherein some of said raDiant energies pass through the windshield onto the driver'"'"''"'"'s face and are reflected therefrom to the camera, the flash illuminating means being positioned where it is ahead of the vehicle when said signal occurs and being energizable for producing said beam of radiant energies, and the camera being positioned to receive radiant energies of said beam reflected from the driver'"'"''"'"'s face at the time of said operation of the shutter;

    energizing means responsive to actuation of the camera shutter for energizing the flash illuminating means; and

    filtering means for blocking from entry into the camera substantially all radiations of frequencies higher than that of visible deep red light.

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