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Electronic rangefinder apparatus

  • US 5,616,903 A
  • Filed: 01/26/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 01/26/1995
  • Status: Expired due to Fees
First Claim
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1. A rangefinder apparatus comprising:

  • a scope including a transparent display disposed at a plane of focus between an occular and objective lens, said display having a reticle scale thereon provided with a series of numerical units in displayed vertically ascending order, said units being calibrated in relation to distance of a target from said display, said first recording means including a display counter on said display for displaying a selected said one of said units appearing on said reticle scale, and means for incrementing said display counter until the selected said one of said units is displayed which corresponds to said unit most closely aligned with an upper edge of the target object;

    first recording means for recording one of said units on said scale corresponding to the height of a target object viewed through said display;

    second recording means for recording a known height of said target object viewed in said display;

    programmable control means for calculating the distance of said target object from said display based on said recorded one of said units and said recorded known height; and

    means for displaying said range calculated by said control means.

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