Full-automatic light wave length measuring method and device

Abstract

The invention discloses a full-automatic light wave length measuring method and device. According to the method, the raster dispersion light splitting principle is mainly used, according to the Fraunhofer diffraction theory, when a parallel light beam is projected to a raster plane, light waves can be diffracted at each slot, diffraction light at all the slots are interfered with each other, when diffraction angles meet a raster equation, light in the diffraction angle directions can be overlaid to be enhanced, and light in other directions can be counteracted. Through constant rotating speed, the angles of emit-in light on a raster are continuously changed in a circulation mode, light with different wave lengths in the emit-in light can be screened out in sequence, finally, light intensity is converted to currents according to the photoelectric effect, and accordingly the wave length of the light screened at this time by the raster and the corresponding currents can be detected. The device is simple in structure, low in manufacturing cost, strong in universality and reliable and stable in working, test condition parameter control is accurate, the device can be used for full-automatic detection on the wave length of homogeneous light in the ultraviolet band, the visible band and the infrared band, and the device can also be used for detecting the wave length range contained by polychromatic light and corresponding intensity of light waves with various wave lengths.

Description

technical field [0001] The invention belongs to the field of analytical instrument measuring equipment, in particular, the invention relates to a fully automatic method and device for measuring the wavelength of light waves. Background technique [0002] At present, the measurement methods of monochromatic light wavelength mainly include: double slit interferometry wavelength, double prism measurement wavelength, Michelson interferometer measurement wavelength, Newton ring measurement wavelength and grating measurement wavelength, but no matter which of the above methods is used to measure Measuring the wavelength of monochromatic light requires manual operation, and requires a telescope to observe the spectral line. The measurement process is very complicated and the error is large. In addition, it is mainly used in the laboratory and cannot be widely promoted. [0003] At present, the popular optical wavelength meters in the market are Agilent 86120C optical wavelength met...

AI Technical Summary

Problems solved by technology

Obviously, both of the above two optical wavelength meters have defects that cannot be ignored: the measurement range is small, and they cannot be used to detect the wavelength of ultraviolet and visible light waves.

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