Multi-channel imaging spectrometer

Details Multi-channel imaging spectrometer Multi-channel imaging spectrometer

2007-08-03

2008-11-11

Evans, F. L (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S326000

Reexamination Certificate

active

07450230

ABSTRACT:
A multi-channel imaging spectrometer, comprising an image acquiring unit, an optical detection element, a dispersion element and a lens module comprising a collimating lens module and a focusing lens module. The design of the lens module achieves elimination of primary aberrations such as coma and distortion through separating the collimating lens module and the focusing lens module, having identical structures with the collimating lens module, by a distance that is defined between a rear principle point of the collimating lens module and a front principle point of the focusing lens module and is twice of a front focal length of the focusing lens module. In addition, the lens module is also designed to exhibit linear dispersion for applied spectrum such that focus for each wavelength of the spectrum is linearly distributed on the imaging plane of the spectrometer so as to reduce the dispersion aberration.

REFERENCES:
patent: 5297555 (1994-03-01), Martens
patent: 6552788 (2003-04-01), Castle
patent: 7414718 (2008-08-01), Wang et al.
patent: 2005/0162649 (2005-07-01), Kryszczynski et al.
patent: 1245114 (2005-12-01), None

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