Spectrophotometer

Details Spectrophotometer Spectrophotometer

1994-09-29

1995-12-05

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356326, G01J 328

Patent

active

054734274

ABSTRACT:
A spectrophotometer using a charge coupled device array as an image receiver characterised in that an image of its entrance slit is tilted with respect to columns of pixels in the charge coupled device array and in which the height of the image of the entrance slit on the charge coupled device array is arranged to extend over two or more rows of pixels so that the image of the entrance slit is skewed over pixels in two adjacent columns. Means are provided to analyse the output of the pixels to provide information on the intensity distribution of each spectral line with respect to wavelength having a resolution greater than that of the pitch of the pixels in each row of the charge coupled device array. Preferably, the pixels of the charge coupled device array are arranged in perpendicular columns and rows and the image of the entrance slit is tilted with respect to columns of the charge coupled device array so that the rows of pixels on the charge coupled device array are generally aligned with the dispersion direction of the or each spectral order.

REFERENCES:
patent: 3163698 (1964-12-01), Saunderson et al.
patent: 4669880 (1987-06-01), Nelson et al.
patent: 4940325 (1990-07-01), Becker-Ross et al.

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