摘要:
The present invention relates to a method and apparatus for generating an optical bit slot window in which N bit slots having the same logical state are generated. A switching device is used which is coupled to an optical pulse source which generates optical pulses in successive bit slots, each optical pulse representing a logical state. Switching signals are then applied to a switching input of the switching device so as to selectively switch a connection between the input and an output. Consequently the logical state of the output is controlled to generate the required N bit slot window.
摘要:
A first light intensity modulating level (1) has a substrate (10) carrying a matrix (30) of elements (31) each having a controllable light transmissivity and devices (32,33,34) responsive to input data signals for controlling the transmissivity of the individual light transmissive elements (31) to store at the first level (1) a pattern which, when an operating light beam (0) is incident on the first level (1), provides an input two-dimensional image at the first level (1) representing the input data. A sequence of further light modulating levels (2,3,4,5,...n) are provided on the first level (1). Each further level (2,3,4,5,...n) has a substrate (10) carrying a matrix (30) of further controllable light transmissive elements (31) and devices (32,33,34) for enabling the light transmissivity of separate further elements of that further level (2,3,4,5,...n) to be controlled. At least one level (1,2,3,4,5...or n) is provided with light responsive elements (34) for modifying the light transmissivity of the light transmissive elements (31) in response to the light incident on that level (1,2,3,4,5,...n). The final level (n) provides a display screen (D) for displaying, when the operating light beam (0) is incident on the first level, an output two-dimensional image derived from the input two-dimensional image and modified by the sequence of levels.
摘要:
An optical information transmitting device for transmitting information on a light beam emitted by a light source, includes an electronic circuit board, and an optical input/output port mounted on the electronic circuit board. The optical input/output port has a glass substrate attached to the electronic circuit board, a first array of optical sensors for absorbing a portion of a light beam applied thereto from the light source and photoelectrically converting the portion of the light beam, and for transmitting the remainder of the light beam therethrought, and a second array of spacial light modulators for modulating the transmittance with respect to a light beam applied thereto, the first and second arrays being disposed on a surface of the glass substrate in superposed relationship to each other. A motherboard comprises a substrate and a coaxial lens array of lenses spaced at equal intervals along an optical axis on the substrate, with conjugate focusing planes of equal magnification being disposed between adjacent ones of the lenses. A method of manufacturing the motherboard is also disclosed.
摘要:
Computer-processed or computer-generated objects can be used to build holograms (10) whose images are close to or stradddle the hologram surface (10). No preliminary or first hologram is required. The hologram (10) is built up from a number of contiguous, small elemental pieces (12). Unorthodox views from inside the object (30) are required for the creation of these elements (12). One method of generating the views employs unique object manipulations. The computational transformations ensure that no singularities arise and that more or less conventional modeling and rendering routines can be used. With a second method, a multiplicity of conventional object views are collected. Then all pixels (22) in these conventional viewplanes (20) are reassigned to new and different locations in the new viewplanes (20) for the element views (22). These methods may be used to build rainbow holograms or full parallax holograms. When properly executed they are visually indistinguishable from other types.
摘要:
An optical information transmitting device for transmitting information on a light beam emitted by a light source, includes an electronic circuit board, and an optical input/output port mounted on the electronic circuit board. The optical input/output port has a glass substrate attached to the electronic circuit board, a first array of optical sensors for absorbing a portion of a light beam applied thereto from the light source and photoelectrically converting the portion of the light beam, and for transmitting the remainder of the light beam therethrough, and a second array of spatial light modulators for modulating the transmittance with respect to a light beam applied thereto, the first and second arrays being disposed on a surface of the glass substrate in superposed relationship to each other. A motherboard comprises a substrate and a coaxial lens array of lenses spaced at equal intervals along an optical axis on the substrate, with conjugate focusing planes of equal magnification being disposed between adjacent ones of the lenses. A method of manufacturing the motherboard is also disclosed.
摘要:
An optical arrangement permutes elements of a multi-dimensional array by projecting an input element array onto an output plane via a plurality of optical paths. Each optical path provides a relative shift in its projection on the output plane whereby there is a prescribed permutation of elements.
摘要:
On décrit un processeur de signaux optiques (10) ainsi qu'un procédé de traitement des informations optiques. Ledit processeur (10) comprend au moins une unité de couplage optique (12), chaque unité (12) étant munie de deux coupleurs optiques (12A, 12B) qui sont connectés de telle manière que les canaux principaux (14) sont connectés en séries avec un temps de retard de durée prédéterminée dans le canal principal (14) entre les capteurs adjacents (12A, 12B). Les unités de couplage optique (12) sont disposées en étages, le nombre de ces unités de couplage (12) ou étages déterminant la programmation ultérieure de chaque fraction du signal optique d'entrée ou de la séquence de code. En d'autres termes, si le code d'entrée a une longueur de M bits, alors il est nécessaire de recourir à M étages de coupleur optique pour traiter ce code et déterminer si le code correspond à la séquence de code préréglé. Les étages peuvent être accouplés pour traiter une séquence d'impulsions optiques qui correspond du point de vue du nombre au nombre d'étages de couplage optique du système. Les sorties de chaque étage sont reliées à un dispositif d'addition optique (24) par le biais d'aiguillages optiques (18) pour traiter simultanément les informations codées et déterminer si le traitement est parvenu ou non à faire correspondre les informations.
摘要:
Le procédé est destiné à la détection, la reconnaissance et l'exploitation de séquences significatives de signaux modulés sur une fréquence porteuse, mêlées à d'autres signaux, du type selon lequel on génère une séquence test correspondant à la séquence à reconnaître toutes deux de profils coordonnés, puis que l'on transforme les signaux électriques de ces séquences en signaux ultrasonores, puis que l'on conduit la séquence test (X) et une séquence reçue (W) après transformation en signaux ultrasonores à un unique corps cristallin (50) du genre cellule de Bragg, pour que ces deux séquences (X et W) parcourent parallèlement ledit corps cristallin unique (50). Selon l'invention, on dirige simultanément un faisceau laser (Y) dans l'unique et même corps cristallin (50), mais dans une direction sensiblement perpendiculaire à la précédente, c'est-à-dire à l'angle de Bragg afin que les rayons du faisceau laser soient défléchis dans une direction par la séquence test (X) et aussi dans la même direction par la séquence reçue (W), puis que l'on analyse les rayons résultants (Z) à leur sortie de l'unique corps cristallin (50), puis que l'on extrait les rayons défléchis (Z4, Z′₁-Z′₂) des rayons résultants Z, puis que, pour chaque bit des séquences (W et X), l'on considère afin de les comparer, les rayons (Z) non défléchis, les rayons (Z′, Z′₁) défléchis une fois et les rayons (Z′₂)défléchis deux fois.