Field multiplexed dispersive imaging spectrometer

Details Field multiplexed dispersive imaging spectrometer Field multiplexed dispersive imaging spectrometer

2006-08-15

2006-08-15

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S334000

Reexamination Certificate

active

07092088

ABSTRACT:
A field multiplexed dispersive imaging spectrometer (20). The novel system includes foreoptics (22) for receiving incoming electromagnetic energy, a disperser (24) disposed to receive energy from the foreoptics (22), and a focal plane array (28) disposed to receive energy from the disperser (24). The disperser (24) is a computer generated holographic disperser designed to disperse light into several, overlapping diffraction orders. In the preferred embodiment, the disperser (24) is designed with greater energy in the central, undiffracted order than in the other diffracted orders. The system (20) also includes a processor (30) which takes the data detected by the focal plane array (28) and generates a representation of the input image in several color bands using an iterative restoration algorithm (32).

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Descour et al., “Demonstration of a computed-tomography imaging spectrometer using a computer-generated hologram disperser”, Jun. 1, 1997, Applied Optics (USA) vol. 36, No. 16, pp. 3694-3698.
Schau et al., “Restoration Target Recognition, and Countermeasure Removal using the Computed Tomographic Imaging Spectrometer (CTIS)”, Apr. 1, 2002, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery VIII, vol. 4725.
M. Descour et al: “Demonstration oif a computed-tomography imaging spectrometer using a computer-generated hologram disperser”; Applied Optics, vol. 36, No. 16, Jun. 1, 1997, pp. 3694-3698, XP002309633, New York (the whole document).

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