MULTICHANNEL DIFFRACTION OPTICAL SPECTRAL DEVICE Russian patent published in 2025 - IPC G01J3/24 G02B5/18 

FIELD: measuring.

SUBSTANCE: invention relates to optical spectroscopy and a multichannel diffraction optical spectral device. Spectral device has series-arranged and optically coupled fibre-optic system for transmitting analysed radiation, a diffraction grating, a lens and a photoelectronic part. Diffraction grating is made with lines in the form of transparent strips with width a and opaque strips with width b and c, which form, within one grating period Tg, a sequence according to the formula: Tg=a+b+a+b+a+c, wherein a=1, b=1 and c=2.85. Photoelectronic part has a photodetector part, a central unit for processing the received signals and a personal computer. Photodetector part consists of at least three identical optical channels, each having series-connected photodetector unit, obtained signal amplification unit, analogue-to-digital conversion unit and received signal processing unit.

EFFECT: enabling simultaneous operation with different resolution and range of analysed wavelengths and high light intensity in higher diffraction orders.

1 cl, 4 dwg