Measuring head

Details Measuring head Measuring head

1989-01-24

1990-05-29

McGraw, Vincent P.

Optics: measuring and testing

Of light reflection

With diffusion

356328, G01N 2127, G01N 2147, G01J 310

Patent

active

049290843

ABSTRACT:
A measuring head, in particular a manual device for the determination of photometric data, includes an optical illuminating device with an aspherical mirror having a groove which extends in an annular manner around an axis of rotational symmetry of the groove, and which, in cross-section, has the configuration of an elliptical segment. The measuring optics to detect the light reflected from a measuring spot forms a round measuring spot on an ellipse at the inlet slit of a monochromator, for which a spherical/cylindrical lens, a first glass rod and a second glass rod are used, the glass rods being provided with cylindrical surfaces, the associated cylinder axes of which are crossed with each other.

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Proceedings of the Society of Photo-Optical Instrumentation Engineers, vol. 240, "Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena", Jun. 29-Aug. 1, 1980 San Diego, J. M. Lerner, Diffraction gratings ruled and holographic--a review, pp. 82-88.
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Patent Abstract of Japan, vol. 11, No. 370 (p. 642) (2817), Dec. 3, 1987--"Photoelectric Colorimeter Which Can Measure Density"--Japanese Patent Pub. No. 62-142240, Jun. 25, 1987.
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