Spectrophotometer for quickly measuring spectrum

A spectrophotometer, a technology for measuring spectra, applied in the direction of spectrometry/spectrophotometry/monochromator, measuring device, optical radiation measurement, etc., can solve the problem of slow measurement speed of spectrophotometer, taking a few minutes, Problems such as real-time measurement cannot be used to achieve the effects of solving measurement errors, improving measurement speed, and improving accuracy
CN1752739AInactive Publication Date: 2006-03-29SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Publication Date
2006-03-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a spectrophotometer for quickly measuring optical spectrum. It includes a light source, on the main optical path of light source output successively are set spectrophotometric system, colour wheel, third reflecting mirror, concave reflecting mirror, diffraction grating, slit and receiver, the output end of said receiver is connected with a data processor and a controller. It is characterized by that the described light source is formed from a broad spectrum halogen tungsten lamp, a deuterium lamp and switchover type first half-transmitting half-reflecting mirror on the optical path of light source output. The described slit is positioned between the described light source and second half-transmitting half reflecting mirror, and between the slit and second half-transmitting half-reflecting mirror also is set a collimating composite lens, and between the described concave reflecting mirror and the described receiving system also is set a convergent lens, and the described receiver is an array of CCD.
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Description

technical field

[0001] The invention relates to a spectrum measuring instrument, in particular to a spectrophotometer for fast spectrum measurement. Background technique

[0002] As a spectral measuring instrument, a spectrophotometer can measure the spectral curves of a sample such as reflection, transmission, and absorption. It is a very important testing instrument in physics, chemistry, and life sciences.

[0003] The existing spectrophotometer structure diagram is as follows Figure 6 As shown, it mainly performs dispersion separation through the diffraction grating 12, and then uses the slit 3 to select light of a single wavelength as the measurement light. By rotating the angle of the grating 12, light with different wavelengths passes through the slit 3, so that continuous monochromatic light can be obtained. Since the detector 18 can only obtain data of a single wavelength every time the data is collected, the measurement speed of the existing spectrophotometer is ...

Claims

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