Thermal emitted radiation detecting device

Details Thermal emitted radiation detecting device Thermal emitted radiation detecting device

G - Physics

08

G

G08G 1/16 (2006.01) B60Q 1/52 (2006.01) B60R 1/00 (2006.01) G01J 5/00 (2006.01) G01S 3/785 (2006.01) G08G 1/0962 (2006.01)

Patent

CA 2157237

A thermal emitted radiation detecting device is configured to detect objects in visual blind spots of a vehicle. A low cost differential detector is used which is sensitive to temperature change. Optics train two different fields of view on the detector and switch between the two fields of view to provide a blind spot field of view and a reference field of view. The presence of a vehicle in the blind spot field of view results in a temperature difference between the two fields of view. The resulting detector output signal is compared to predetermined threshold levels and then used to provide an indication, either visual or audible. Several embodiments of optics and switching fields of view are provided.

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