Refractive-diffractive spectrometer

Details Refractive-diffractive spectrometer Refractive-diffractive spectrometer

2006-09-12

2006-09-12

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

Reexamination Certificate

active

07106440

ABSTRACT:
A diffraction grating and a prism with the appropriate characteristics are employed to provide a combined dispersive characteristic that is substantially linear over the visible spectrum. Radiation from the grating and prism is collimated by a lens towards a detector array. The grating or a telecentric stop between the grating and prism is placed at a focal point of the lens in a telecentric arrangement so that equal magnification is achieved at the detector array. If the detector array is replaced by a plurality of optical channels, a multiplexer/demultiplexer is obtained.

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Notification of Transmittal of the International Search Reoprt or the Declaration, issued in corresponding PCT Appln. No. PCT/US02/37057, International Searching Authority, European Patent Office, dated Apr. 4, 2003, 5 pages.

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