Apparatus for multiple positioning of a planar sample at a repea

Details Apparatus for multiple positioning of a planar sample at a repea Apparatus for multiple positioning of a planar sample at a repea

1999-01-19

2000-07-04

Font, Frank G.

Optics: measuring and testing

Sample, specimen, or standard holder or support

74 182, 269 21, 2481811, G01N 2101

Patent

active

060846666

ABSTRACT:
An apparatus for rotationally positioning a disk on a stationary stage at a constant and repeatable distance and angle for a device to perform an operation on several positions of the disk surface is disclosed. The disk apparatus has a manipulating member that operates from a central portion of the stationary stage. The member raises the disk, rotates the disk to a new position and sets the disk back down on a planar portion of the same stationary stage. The apparatus uses vacuum to secure the disk to the stage and to the member during manipulation. The member is raised by a spring and lowered by vacuum. The apparatus is easily incorporated into an optical system for performing reflectance and transmitance on both side of the disk simultaneously allowing for the analyses of the disk layers for composition and consistency.

REFERENCES:
patent: 4226569 (1980-10-01), Gerard et al.
patent: 4781520 (1988-11-01), Balter
patent: 5353112 (1994-10-01), Smith
patent: 5579113 (1996-11-01), Papst et al.

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