Optical spectrophotometer having a multi-element light source

Details Optical spectrophotometer having a multi-element light source Optical spectrophotometer having a multi-element light source

1992-06-09

1993-10-26

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

250553, 356310, 372 53, G01J 328, G01J 310, G01J 332

Patent

active

052570860

ABSTRACT:
A spectrophotometer includes an array of light emitting diodes configured for activation in successive Hadamard encodement patterns, a diffraction grating, an optical slit, a detector and electronic controls including a computer. In operation, the diffraction grating disperses and collimates radiation from the array and directs selected spectral components through the slit onto the detector whereupon the computer performs a Hadamard analysis on the detector signals.

REFERENCES:
patent: 3910701 (1975-10-01), Henderson et al.
patent: 5073029 (1991-12-01), Eberly et al.
patent: 5139335 (1992-08-01), Lundeen et al.
Swift et al "Hadamard Transform Imager and Imaging Spectrometer", Applied Optics, vol. 15, #6, Jun. 1976, pp. (1595-1609).

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