Spectropotometer with a field restrictor and its application to

Details Spectropotometer with a field restrictor and its application to Spectropotometer with a field restrictor and its application to

1996-12-18

1998-05-12

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01J 304, G01N 2127

Patent

active

057514208

ABSTRACT:
A zoom lens is provided between the sample and the slit of a spectrophotometer to change the size of the image of the sample on the slit plane. The picture of the sample is taken by the zoom lens and is shown on a display screen, on which a window is superimposed. When the operator changes the location of the window, the sample is moved accordingly, and when the operator changes the size of the window, the focal length of the zoom lens is changed, whereby the size of the measurement area is changed. By changing the size of the measurement area on the slit plane while the size of the elementary photo-sensors of a photo-detector is unchanged, the resolution of the two-dimensional spectrophotometry can be changed.

REFERENCES:
patent: 3527536 (1970-09-01), Alpen
patent: 3740147 (1973-06-01), Kallet
patent: 4119364 (1978-10-01), Takahashi
patent: 4917492 (1990-04-01), Koishi
patent: 5301007 (1994-04-01), Ukon
patent: 5497267 (1996-03-01), Ishikawa et al.
Mutter et al "Spot Locator for Microscopis Spectrophotometer" IBM Tech. Disc. Bull. vol. 21, #6, pp. 2456-2459, Nov. 1978.
Kazuo Yamaba et al., "Neuberger Memorial Seminar on Color Reproduction", vol. 1184, Dec. 14-15, 1989, pp. 168-176.

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