Multi-spectral two-dimensional imaging spectrometer

Details Multi-spectral two-dimensional imaging spectrometer Multi-spectral two-dimensional imaging spectrometer

1999-06-01

1999-11-09

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

250226, G01J 351

Patent

active

059824972

ABSTRACT:
A multi-spectral two-dimensional imaging spectrometer includes a combination of achromatic, well-corrected lenses for imaging a two-dimensional scene on an internal field stop. The light emanating from this intermediate image is collimated with another well-corrected lens. A spectral separation subassembly consisting of multiple dichroic filters divides the incident light into multiple, identical, and independent arms. The light in each arm is spectrally filtered based on the properties of the dichroic filters in the separation subassembly. An re-imaging subassembly composed of a well-corrected lens forms contiguous images onto a single two-dimensional detector array. The images are identical copies of the original object with each copy having a different spectral component and can be viewed on a standard monitor or alternatively on a computer employing an analog-to-digital conversion device.

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