LOW STRAY LIGHT VEILING GLARE OBJECTIVE LENS FOR NIGHT VISION SYSTEMS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jul 22, 2010
app pub date -
Jan 22, 2009
filing date -
Jan 22, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A lens includes first and second opposing surfaces extending radially from an optical axis in an optical system for passing light received from an object. The lens includes a peripheral edge extending between the first and second surfaces. A portion of the peripheral edge has at least either a positive slope or a negative slope with respect to the optical axis. The positive or negative slope of the peripheral edge is configured to reduce glare from stray light received from the first surface. A portion of the peripheral edge may be shaped in a sawtooth pattern or an approximate sinusoidal pattern. The peripheral edge of the lens is also configured to direct light that is received from the object toward light traps which are disposed adjacent to the lens.
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Cited Art Landscape
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