초록 ▼

A dual-band detector that absorbs incident radiation in a first range of wavelengths and that absorbs incident radiation in a second range of wavelengths. The dual-band detector includes a semiconductor substrate and a first microbridge detector level disposed above the semiconductor substrate. The

A dual-band detector that absorbs incident radiation in a first range of wavelengths and that absorbs incident radiation in a second range of wavelengths. The dual-band detector includes a semiconductor substrate and a first microbridge detector level disposed above the semiconductor substrate. The first microbridge detector level includes an active area that absorbs incident radiation in one of the first range of wavelengths and the second range of wavelengths. In one embodiment, the semiconductor substrate includes a detector that detects incident radiation in the other of the first and second range of wavelengths. In another embodiment, the dual-band microbridge detector also includes a second microbridge detector level. The second microbridge detector level also includes an active area that absorbs incident radiation in an alternative one of the first range of wavelengths and the second range or wavelengths. With this apparatus, the dual-band detector can operate in a first range of wavelengths and also in a second range of wavelengths. In addition, this apparatus can be fabricated using existing processing techniques.

대표청구항 ▼

[ What is claimed is:] [1.] An imaging system, comprising:a lens that receives an electromagnetic signal, focuses the electromagnetic signal and outputs a focussed electromagnetic signal;a focal plane array including a plurality of dual-band detector devices disposed in the focal plane array, wherei

[ What is claimed is:] [1.] An imaging system, comprising:a lens that receives an electromagnetic signal, focuses the electromagnetic signal and outputs a focussed electromagnetic signal;a focal plane array including a plurality of dual-band detector devices disposed in the focal plane array, wherein each dual-band detector device detects the focussed signal, converts the focussed signal into a sensed signal and outputs the sensed signal to provide a plurality of sensed signals at an output of the focal plane array, and wherein each dual-band detector device includes:a semiconductor substrate including a detector device that is responsive to the focussed signal in a first band of wavelengths; anda microbridge detector disposed above the semiconductor substrate, including a sensing element that is responsive to the focussed signal in a second band of wavelengths, and support legs that support the microbridge detector above the semiconductor substrate and that couple a detected signal provided by the sensing element to the semiconductor substrate;a focal plane array processor that receives the plurality of sensed signals, processes the plurality of sensed signals to correct any gain and any offset errors between each of the plurality of sensed signals, and that outputs a plurality of processed signals;a display processor that receives the plurality of processed signals, converts the plurality of processed signals into a display signal suitable for output to a display, and that outputs the display signal; andthe display that receives the display signal and displays the display signal so as to display an image of a scene or object that emitted the electromagnetic signal.