Coaxial disc-mount for measuring flatness of computer-drive disc

Details Coaxial disc-mount for measuring flatness of computer-drive disc Coaxial disc-mount for measuring flatness of computer-drive disc

1996-08-15

1997-11-18

Font, Frank G.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356345, G01B 902

Patent

active

056893370

ABSTRACT:
An interferometer mounting mechanism that consists of a horizontal shaft rigidly connected to the interferometer in axial alignment with the optical path of the instrument and protruding through an opening in the center of the transmission flat. A sample stage adapted to receive a computer-drive disk is attached to the distal end of the shaft, so that the stage is directly and rigidly connected to the interferometer. The sample stage consists of a hub capable of retaining a disk in precise alignment with the transmission flat by hanging its center hole on two support posts and resting the disk on three pressure tips on the hub. A system of push-pull adjustment screws is provided to set the proper tip/tilt of the disk.

REFERENCES:
patent: 5416586 (1995-05-01), Trowlowe et al.
patent: 5457534 (1995-10-01), Lacey et al.

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