Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1986-05-23
1992-10-27
Shepperd, John W.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
2502011, 369 4414, 369122, 385 1, G11B 700, G11B 2110, G11B 509, G01J 120
Patent
active
051595869
ABSTRACT:
A device for processing optical data comprising a transparent substrate for a light to be applied, light source for projecting the diverging light onto one surface of the substrate substantially perpendicularly to the surface, lens provided on the substrate for causing the projected light to emerge obliquely or vertically upward from the other surface of the substrate and focusing the emergent light, photodetector provided on the substrate for receiving the light reflected from above, focusing drive mechanism for adjusting the position of the substrate upward or downward, and tracking drive mechanism for adjusting the position of the substrate laterally.
REFERENCES:
patent: 3668404 (1972-06-01), Lehovec
patent: 4085423 (1978-04-01), Tsunoda
patent: 4190775 (1980-02-01), Sakurai
patent: 4418980 (1983-12-01), Keil
patent: 4425023 (1984-01-01), Matsumoto
patent: 4478483 (1984-10-01), Sprague
patent: 4570191 (1986-02-01), Stefano
patent: 4611883 (1986-09-01), Myer
patent: 4672187 (1987-06-01), Fujita et al.
patent: 4737946 (1988-04-01), Yamashita
patent: 4747090 (1988-05-01), Yamashita
T. Suhara, K. Kobayashi, H. Nishihara and J. Koyama, "Graded-index Fresnel lenses for integrated optics", Applied Optics, vol. 21, No. 11, p. 1666, Jun. 1, 1982.
D. Heitmann and R. V. Pole, "Two-dimensional focusing holographic grating coupler", Appl. Phys. Lett., 37(7), p. 585, Oct. 1, 1980.
K. Takizawa, "Electrooptic Fresnel lens-scanner with an array of channel waveguides", Applied Optics, vol. 22, No. 16, p. 2468, Aug. 15, 1983.
Hanada Keiji
Ogata Shiro
Yamashita Tsukasa
Glembocki Christopher R.
Omron Tateisi Electronics Co.
Shepperd John W.
LandOfFree
Device for processing optical data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for processing optical data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for processing optical data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-911151