Data storage and readout optical head using a single substrate h

Details Data storage and readout optical head using a single substrate h Data storage and readout optical head using a single substrate h

1986-02-13

1989-08-08

Faber, Alan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

350 9612, 350 9614, 350 9618, 369 44, 369 45, G11B 7135, G02B 612

Patent

active

048559865

ABSTRACT:
An optical head for optical storage and readout of information on or from an optical recording medium using a light beam comprises a single substrate having a waveguide on one of its opposite surfaces, a deflector portion disposed on the substrate to deflect the light beam passing through the waveguide at an adjustable angle, and a converging portion for converging the light beam to be emitted from the waveguide. The converging portion comprises a plurality of convergence electrodes which are disposed on a part of the waveguide. The convergence electrodes are spaced apart from each other in a direction perpendicular to the direction of propagation of the light beam through the part of the waveguide such that the part of the waveguide possesses, as a consequence of an electrooptic effect, a distribution of refractive index which permits adjustment of the focal point of the converged light beam.

REFERENCES:
patent: 3795433 (1974-03-01), Channin
patent: 4070092 (1978-01-01), Burns
patent: 4175827 (1979-11-01), McMahon
patent: 4348079 (1982-09-01), Johnson
patent: 4413270 (1983-11-01), Sprague
patent: 4425023 (1984-01-01), Matsumoto et al.
patent: 4470661 (1984-09-01), Matsumoto
patent: 4478483 (1984-10-01), Sprague
patent: 4548464 (1985-10-01), Auracher et al.
patent: 4637681 (1987-01-01), Yamamoto et al.
patent: 4747090 (1988-05-01), Yamashita et al.
Takizawa, Electro-Optic Fresnel Lens-Scanner with an Array of Channel Waveguides, Applied Optics, vol. 22, No. 16, Aug. 15, '83, pp. 2468-2473.
Matsunaga et al., "Optical Waveguide Isolator in Ti diffused LiNbO.sub.3 ", Optics Communications, Dec. 1978, vol. 27, No. 3, pp. 361-364.
Tsao et al., "Photodeposition of Ti and Application to Direct Writing of Ti: LiNbO.sub.3 Waveguides", Appl. Phys. Lett., vol. 42, No. 7, Apr. 1983, pp. 559-561.

Affiliated with

Also associated with

Rating

Data storage and readout optical head using a single substrate h does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data storage and readout optical head using a single substrate h, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data storage and readout optical head using a single substrate h will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-911378