Infrared circular dichroism measuring apparatus and infrared...

Details Infrared circular dichroism measuring apparatus and infrared... Infrared circular dichroism measuring apparatus and infrared...

2006-02-21

2006-02-21

Smith, Zandra V. (Department: 2877)

Optics: measuring and testing

By light interference

Having polarization

Reexamination Certificate

active

07002692

ABSTRACT:
The object of the invention is to provide an infrared circular dichroism measuring apparatus that improves the measuring time and the measuring accuracy.An infrared circular dichroism measuring apparatus101comprising: AC signal extractors110–112where an interference light beam from an IR light source102which has passed an interferometer103is converted into a clockwise and a counterclockwise circularly polarized light beams and is irradiated on a sample to extract from a detected signal of detector107an interferogram by each of the circularly polarized light beams; DC signal extractors113, 112for extracting an interferogram by the IR absorption of the sample; a calculator114for figuring out the circular dichroism; and a selective transmitter120for narrowing down the wavelength region to be measured based on an IR absorption wavelength region corresponding to a vibration mode of the structure to be measured in the sample molecule.

REFERENCES:
patent: 5708504 (1998-01-01), Hopkins
patent: 5788632 (1998-08-01), Pezzaniti et al.
patent: 6070093 (2000-05-01), Oosta et al.
patent: 0 916 945 (1999-05-01), None
patent: A 2000-206036 (2000-07-01), None
patent: WO 01/63231 (2001-08-01), None

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