Lens Inclination Adjustment System

Details Lens Inclination Adjustment System Lens Inclination Adjustment System

1997-07-24

1999-04-20

Swann, Tod R.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, 369 53, 356359, G11B 709

Patent

active

058963626

ABSTRACT:
A lens adjustment system including a interferometer and an adjustment unit is used for adjusting an inclination of a lens of an optical data recording/reproducing device. The interferometer detects an inclination angle of the objective lens, then, the inclination of the lens is adjusted at the adjustment portion. There are two light sources: one is for the interferometer; and the other is for monitoring the inclination adjustment. The inclination adjustment unit has an optical element which prevents the beam projected toward the interferometer from being incident on an image receiving surface of the monitoring system, and only the beam for monitoring the inclination adjustment is observed when the inclination of the lens is being adjusted.

REFERENCES:
patent: 5317144 (1994-05-01), Oono et al.
patent: 5379105 (1995-01-01), Iki et al.
patent: 5432606 (1995-07-01), Noguchi et al.
patent: 5532987 (1996-07-01), Fujita et al.
patent: 5553052 (1996-09-01), Oono et al.
"Superresolution Readout System with Electrical Equalization for Optical Disks"by Takaya Tanabe, Applied Optics, vol. 34, No. 29, Oct. 10, 1995.
"Aberration Limits for Annular Gaussian Beams for Optical Storage"by T.C. Strand and H. Werlich, Applied Optics, No. 16, Jun. 1, l994.

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