Spectrophotometer
A spectrophotometer and spectrophotometer technology, which is applied in the directions of spectrometry/spectrophotometry/monochromator, analytical materials, optical radiation measurement, etc. Large and other problems, to achieve the effect of suppressing drift, high S/N, and high stability of transmitted light
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[0027] refer to figure 1 , the first example of the spectrophotometer of the present invention will be described. The spectrophotometer of this example has first and second light sources 1 and 2, a sample cell 5, a detection optical system, a detection optical system computing unit, a light source monitoring optical system, a light source monitoring system computing unit, and a computer 17. The detection optical system has a dichroic mirror 3 , an imaging lens 7 , a polychromator 10 and a one-dimensional image sensor 12 . A two-dimensional image sensor may also be used instead of the one-dimensional image sensor 12 . The detection optical system computing unit has an amplifier 15 and an A / D converter 16 .
[0028] The light source monitoring optical system has first and second optical fibers 21A, 21B, first and second lenses 23A, 23B, and first and second light source monitoring photodetectors 24A, 24B. The optical fibers 21A, 21B may also be optical fiber bundles. The lig...
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