Dynamic information storage or retrieval – With particular cabinet structure
Patent
1980-11-17
1983-06-21
Wolff, John H.
Dynamic information storage or retrieval
With particular cabinet structure
369 76, 369111, 358906, G11B 100, G11B 718
Patent
active
043897177
ABSTRACT:
By means of a radiation beam, an apparatus writes or reads information on an information surface of a rotary optical information disc (21), which apparatus comprises an objective frame (16) on which an objective (17) for concentrating the radiation beam to a radiation spot is mounted by means of a parallel guide (19) in such a way that it can move in the direction of its optical axis (18). The objective is protected against dust, contaminants and mechanical damage by means of stationary plane-parallel radiation-transparent shielding means (22), which are interposed between the objective and the rotary information disc, the lens system of the objective being corrected for the optical properties of the shielding means.
REFERENCES:
patent: 3839601 (1974-10-01), Kimura et al.
patent: 3842197 (1974-10-01), Broussaud et al.
patent: 3977684 (1976-08-01), Camerik
patent: 4003091 (1977-01-01), Wright
patent: 4106057 (1978-08-01), Van Vroenhoven
patent: 4183069 (1980-01-01), Roullet et al.
Kawecki, "Protective Shield for Laser Lens", IBM Tech. Disc. Bulletin, vol. 13, No. 10, Mar. 1971, p. 3165.
Briody Thomas A.
McElheny Jr. Donald
Myer Robert T.
Tamoshunas Algy
U.S. Philips Corporation
LandOfFree
Apparatus for writing and/or reading information on a rotary inf does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for writing and/or reading information on a rotary inf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for writing and/or reading information on a rotary inf will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2113211