Beam shaping system with surface treated lens and methods for making same
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United States of America Patent
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May 15, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1998
filing date -
Apr 19, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical system for distinguishing features of a target. A light source is located at a source position for generating a plurality of light rays emanating from the source position. A lens is positioned in front of the light source position. The lens has a first surface for receiving light rays emanating from the source position and a second surface, opposite the first surface, for outputting the received light rays. The first and second surfaces are separated by a thickness. The second surface having a first clear area for passing a first group of light rays through the lens. The second surface further includes a treated that is area separate from the first clear area. A method for treating an optical lens. A lens substrate formed of clear material is provided. The lens substrate has a first surface, a second surface opposite the first surface, and a thickness represented by a distance between the first and second surfaces. A treated area is formed on a portion of the second surface of the clear material. After the treated area is formed, the second surface includes the treated area and a separate first clear area different from the treated area.
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