公开(公告)号：US5652654A

公开(公告)日：1997-07-29

申请号：US689391

申请日：1996-08-12

Applicant: George Asimopoulos

Inventor： George Asimopoulos

IPC: G01J3/08 ,  G01J3/28 ,  G01J3/42 ,  G01J3/18

CPC classification number: G01J3/2889 ,  G01J3/08 ,  G01J3/42 ,  G01J2003/2866

Abstract: A dual beam spectophotometer is described in which a beamsplitter is at least partially surrounded by a chopper, the combination of which provide sample and reference beams. An oscillating grating produces a monochromatic light beam scans a selected spectral range of wavelengths. The movement of a second chopper and of the oscillating grating is controlled to alternately pass sample and reference spectrums for detection by a detector and to block all radiation. Detected signals are processed for storage by suitable electronics and a computer. The electronics also control the motion of the oscillating grating and chopper. A set of beamsplitters with distinctly different sample-to-reference beam ratios are provided to add versatility to the spectrophotometer.

Abstract translation: 描述了一种双光束光谱仪，其中分束器至少部分地由斩波器包围，其组合提供了采样和参考光束。 振荡光栅产生单色光束扫描所选择的波长范围。 控制第二斩波器和振荡光栅的移动以交替地通过采样和参考光谱，以便由检测器检测并阻止所有辐射。 检测到的信号由适当的电子设备和计算机进行处理。 电子设备还可以控制振荡光栅和斩波器的运动。 提供了一组具有明显不同的样品与参比光束比的分光镜，以增加分光光度计的多功能性。