公开(公告)号：US3877812A

公开(公告)日：1975-04-15

申请号：US32824073

申请日：1973-01-31

Applicant: WILKS SCIENTIFIC CORP

Inventor： THOMPSON DUANE T

IPC: G01J3/00 ,  G01J3/08 ,  G01J3/427 ,  G01J3/433 ,  G01N21/31 ,  G01J3/02 ,  G01J3/42

CPC classification number: G01J3/02 ,  G01J3/0232 ,  G01J2003/1213 ,  G01N21/314

Abstract: There is disclosed a multiple wavelength infrared spectrometer. It includes an optical chopper and a pendulum-like filter carrier which inserts a plurality of filters sequentially into the radiation beam. Filter changes occur during an opaque period of the chopper and each filter remains in place for a predetermined number of radiation pulses. The radiation passes through the sample and onto a detector which produces an electrical signal. An electronic circuit operates upon the signal so produced to provide an output proportional to sample absorbance.

Abstract translation: 公开了一种多波长红外光谱仪。 它包括一个光斩波器和一个将多个滤波器顺序插入到辐射束中的摆式滤波器载体。 在斩波器的不透明时段期间发生滤波器变化，并且每个滤波器保持在预定数量的辐射脉冲的适当位置。 辐射通过样品并进入产生电信号的检测器。 电子电路根据所产生的信号进行操作，以提供与样品吸光度成比例的输出。