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Proximity detector

  • US 5,396,070 A
  • Filed: 03/14/1994
  • Issued: 03/07/1995
  • Est. Priority Date: 01/29/1991
  • Status: Expired due to Fees
First Claim
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1. A proximity detecting system for manned motor vehicles and trailers for said vehicles comprising transmitter means producing a zone of infra-red radiation, receiver means having a zone of sensitivity to the infra-red radiation intersecting with the zone of infra-red radiation of the transmitter means, and indicating means indicating the amplitude of a signal from the receiver means, the transmitter and receiver means together comprising at least three units spaced along a line with the units being alternately transmitter units and receiver units, the zones of the transmitter units and the receiver units both being divergent and the receiver and transmitter units being spaced substantially equally along said line of units, wherein each such unit has a polar diagram with at least two distinct directions of high magnitude approximately coplanar with the line of units and is constructed from a plurality of elements behind a common aperture, the axis of each element through the aperture forming one of the directions of high magnitude.

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