Position detector and mount therefor for a centrifugal analyzer

Details Position detector and mount therefor for a centrifugal analyzer Position detector and mount therefor for a centrifugal analyzer

1985-09-24

1987-09-22

LaRoche, Eugene R.

Optics: measuring and testing

By inspection with agitation or rotation

Of container contents

250231SE, 356246, G01N 2190, G01N 110

Patent

active

046951644

ABSTRACT:
A relative position detector has a photodetector arrangement for providing light and responding to the intensity of the light when reflected thereto. A member such as a cylindrical pin having a surface reflective of the light, convex to the photodetector arrangement, and movable relative thereto reflectively sweeps the light across the photodetector arrangement for responding thereto to produce a continuously-curving response indicating with its peak the position detected. The continuously-curving response can be differentiated in a peak detector for even more precise position detection. A mount which may be used for the photodetector arrangement has a support member and a member having a lower coefficient of thermal expansion slidably supported thereon, except for one fixed point.

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patent: 4157802 (1979-06-01), May, Jr.
patent: 4506339 (1985-03-01), Kuhnlein
patent: 4515889 (1985-05-01), Klose et al.
patent: 4557600 (1985-12-01), Klose et al.

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