US PATENT SUBCLASS 356 / 334
.~.~.~ With diffraction grating means

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

300  DF  BY DISPERSED LIGHT SPECTROSCOPY {10}
331  DF  .~ With monochromator structure {1}
332  DF  .~.~ Having adjustable color or bandwidth {2}
334.~.~.~ With diffraction grating means

DEFINITION

Classification: 356/334

With diffraction grating means:

(under subclass 332) Subject matter wherein the dispersive element is a diffraction grating.