John Charles Iverson

US Patent:

20070086006, Apr 19, 2007

Filed:

Oct 18, 2005

Appl. No.:

11/253853

Inventors:

Matthew Ebersole - Sun Prairie WI, US
John Iverson - Stoughton WI, US

International Classification:

G01J 3/42

US Classification:

356319000

Abstract:

A spectrometer () includes a light source () providing output light () to the bundled input ends () of multiple light pipes (). The light pipes () branch into sets () between their input ends () and output ends (), with each set () illuminating a sample detector () (via a sample chamber ()) for measuring light scattered or emitted by a sample, or a reference detector () for obtaining a reference/datum measurement of the supplied light, so that comparison of measurements from the sample detector () and the reference detector () allows compensation of the sample detector measurements for drift. Efficient and accurate measurement is further assured by arraying the multiple light pipes () in each set () about the input bundle () so that each set receives at least substantially the same amount of light from the light source ().