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US 2004/0170017 A1Published application
Long distance illuminator
AssigneeCantronic Systems Inc.
InventorsJames Zhan, Junjiang Han, Meigen Xia, Meibo Zhang
Life of this patent
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Abstract
An illuminator, which may be an infrared illuminator, has an array of LEDs. The LEDs are mounted to an apertured substrate. Air flow through apertures in the substrate cools the LEDs. A fan forces air through the apertures. A collimating plate reduces divergence of a light beam issuing from the LEDs. The illuminator is suitable for long range illumination, for example in night vision systems or surveillance systems. An infrared illuminator may be combined with an infrared camera to provide a night vision system.
Claims32
An illuminator comprising:
- a housing;
- a substrate within the housing;
- a plurality of LEDs arranged in an array and mounted to the substrate;
- wherein the substrate is apertured adjacent to each of the LEDs in the array.
1 more element
Dependencies are inferred from the claim text.