Holographic memory read by a laser array
Номер патента: CA2022126A1
Опубликовано: 23-06-1991
Автор(ы): Eung-Gi Paek
Принадлежит: Bell Communications Research Inc
Опубликовано: 23-06-1991
Автор(ы): Eung-Gi Paek
Принадлежит: Bell Communications Research Inc
Реферат: A holographic memory read-out system in which multiple pages of information are angularly multiplexed onto a recording medium, either planar or volume. For read-out of the hologram, a selected one of a plurality of surface-emitting semiconductor lasers arranged in a two-dimensional array is activated. The coherent output beam is passed through a collimating lens which produces a coherent plane-wave having a direction dependent upon which laser in the array produced the output beam. The plane-wave uniformly irradiates the recording medium to thereby diffract a selected image at a set angle to an imaging apparatus.
Holographic memory with moving memory medium
Номер патента: US3976354A. Автор: Michael F. Braitberg,Tzuo-Chang Lee. Владелец: Honeywell Inc. Дата публикации: 1976-08-24.