Category : Spectroscopy, colorimetry, photometry, fluometry > Spectrometers

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LORD Ingénierie, French specialist in line scan cameras, has developed a tool capable of giving information on the spectral distribution of the light diffused by an object ; this information can notably be used to measure colour density (colorimetry).
The " standard " version of this product consists of a fibreoptic (recuperation of diffused light), a diffraction pattern, and a LORD standard line scan camera (CCD 2048 pixel resolution sensor). This gives, via the video line, information directly connected to the spectral distribution of the diffused light (according to the characteristics of the sensors wave length sensitivity, the effectiveness of the diffraction pattern and the fibre’s absorption).
In addition, LORD Ingénierie can supply versions that integrate embedded microprocessor and/or wired-in logic intelligence which allow video information to be processed and the colorimetric co-ordinates to be supplied directly at output.

Specifications of " standard " model :
2048 pixel sensor, 14 m m x 200 m m.
The pixels are averaged 4 by 4 (pixels 1,2,3 and 4 correspond to " macropixel " N°1 ; pixels 2045 to 2048 to " macropixel " 512.). Consequently the apparent size of a pixel is 56 x 2000 m m. The spectrometer’s output is 512 pixels.
Of these 512 pixels, only 350 are effectively used. This implies that the sensor has been designed in such a way that a spectrum 300nm wide (typically 430 to 730 nm) would occupy at sensor level an area 350 x 56 m m (19.6 mm). This means therefore, a dispersion at CCD level of approximately 15 nm/mm.
The line frequency is 900 Hz.

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