Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1988-01-20
1990-02-27
McElheny, Jr., Donald
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
350320, G11B 700
Patent
active
049052160
ABSTRACT:
A method for constructing an optical head having a holographic diffraction grating for focusing a light beam on a photodetector is disclosed. The photodetector is first mounted in the optical head and the distance between the position where the hologram lens will be placed and the photodetector is measured. The holographic grating pattern which is etched onto the hologram leans is then created so that it will focus the laser beam at the measured distance. The hologram lens is then mounted in the optical head.
REFERENCES:
patent: Re31255 (1983-05-01), Geddes
patent: 3628849 (1969-06-01), Flamand et al.
patent: 4011400 (1977-03-01), Simons et al.
patent: 4124860 (1978-11-01), Johnson
patent: 4143402 (1979-03-01), Bricot et al.
patent: 4216357 (1980-08-01), Iwasaki et al.
patent: 4241999 (1980-12-01), Pouey
patent: 4253723 (1981-03-01), Kojima et al.
patent: 4307297 (1981-12-01), Groff et al.
patent: 4309605 (1982-01-01), Okabe
patent: 4334300 (1982-06-01), Arquie et al.
patent: 4351051 (1982-09-01), van Alem et al.
patent: 4354115 (1982-10-01), Warabisako et al.
patent: 4355858 (1982-10-01), Funato et al.
patent: 4397527 (1983-08-01), Geyer
patent: 4409631 (1983-10-01), Matsumoto
patent: 4458980 (1984-07-01), Ohki et al.
patent: 4462095 (1984-07-01), Chen
patent: 4504939 (1985-03-01), Eberly
patent: 4525625 (1985-06-01), Abe
patent: 4544843 (1985-10-01), Kern et al.
patent: 4558440 (1985-12-01), Tomita
patent: 4560249 (1985-12-01), Nishikawa et al.
patent: 4599714 (1986-07-01), Endo
patent: 4607368 (1986-08-01), Hori
patent: 4607914 (1986-08-01), Fienup
patent: 4624526 (1986-11-01), Tsukai et al.
patent: 4626679 (1986-12-01), Kuwayama et al.
patent: 4670869 (1987-06-01), Chen
patent: 4672593 (1987-06-01), Ojima et al.
patent: 4689481 (1987-08-01), Ono
patent: 4695992 (1987-09-01), Aoi
patent: 4700335 (1987-10-01), Aoi
patent: 4721368 (1988-01-01), Deguchi et al.
patent: 4731772 (1988-03-01), Lee
patent: 4733065 (1988-03-01), Hoshi et al.
patent: 4733067 (1988-03-01), Oinoue et al.
patent: 4736231 (1988-04-01), Ayabe et al.
patent: 4764931 (1988-08-01), Matsuda
patent: 4771411 (1988-09-01), Greve
patent: 4772784 (1988-09-01), Yoshitoshi et al.
patent: 4785438 (1988-11-01), Mizunoe
patent: 4787076 (1988-11-01), Deguchi et al.
patent: 4789977 (1988-12-01), Oudenhuysen et al.
patent: 4807212 (1989-02-01), Kaneda et al.
G. L. Rogers, "Artificial Holograms and Astigmatism", Proceedings of the Royal Society of Edinburgh, vol. LXIII-Part IV (No. 22), 1952.
Yu S. Mosyakin & G. V. Skrotskii, "Use of Holograms as Optical Elements" (Review), Soviet Journal of Quantum Electronics, vol. 2, No. 3, pp. 199-206, 1972.
Wai-Hon Lee, "Binary Synthetic Holograms", Appl. Opt., vol. 13, pp. 1677-1682, 1972.
O. Bryngdah, "Computer-Generated Holograms as Generalized Optical Components, Optical Engineering", vol. 14, No. 5, pp. 426-435, 1975.
McElheny Jr. Donald
Pencom International Corporation
LandOfFree
Method for constructing an optical head by varying a hologram pa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for constructing an optical head by varying a hologram pa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for constructing an optical head by varying a hologram pa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-178963