Abstract: This imaging device comprises: an image sensor which converts an optical image, captured by pixels arranged in an array on an imaging surface, into an image signal and outputs the image signal; a modulation unit which is provided to a light-receiving surface of the image sensor and modulates the intensity of light; and an image processing unit which carries out image processing on an output image output by the image sensor. The modulation unit has a grating substrate and a first grating pattern formed on a first surface of the grating substrate facing a surface of the image sensor near the light-receiving surface. The grating pattern is configured from a plurality of concentric circles having pitches which are inversely proportional to the distance from the origin point of at least one reference coordinate, the concentric circles do not overlap with each other within the grating pattern.

Abstract: An imaging device includes: an image sensor that outputs, as an image signal, light received at a light-receiving surface; a phase modulation element provided in close to the light-receiving surface, which has a grating pattern composed of multiple zones arranged in a concentric form to modulate the phase of light passing through the grating pattern toward the surface; and an image processing unit that executes image processing for the image signal output from the sensor. The spacing between the phase modulation element and the image sensor is set so that the duty ratio of the full width at half maximum for a bright section to the width for one period of a projection image of the concentric grating pattern is 0.5 or less in the case of light incidence from a point light source disposed at a distance of a subject in the axial direction of a concentric circle of the grating pattern.

Abstract: An imaging device includes: a modulator with a first pantoscopic grating pattern, which is configured to modulate light intensity by passage through the first pantoscopic grating pattern; an image sensor configured to convert light passing through the modulator, to image data, and output the image data; and an image processing unit configured to conduct image processing of restoring an image with the use of the image date output from the image sensor, and the imaging device is characterized in that: the first pantoscopic grating pattern is configured to include multiple basic patterns; and each of the basic patterns has the shape of a concentric circle.

Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a real pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate a complex sensor image including a complex number, from an image obtained by executing predetermined positioning for the sensor image taken through the real pattern; and an image processing unit configured to restore an image, based on an operation with the complex sensor image and data of a pattern for reconstruction.

Abstract: An imaging device includes: an image sensor including a plurality of light-receiving elements, configured to generate a sensor image by photoelectrically converting received light through the light-receiving elements; and a modulating unit configured to modulate the intensity of the light received by the image sensor, through a real pattern provided at a predetermined distance from a light-receiving surface of the image sensor, and the imaging device is characterized in that the width of an aperture of the real pattern provided for the modulating unit is determined, based on the predetermined distance and a two-dimensional size of the image sensor.

Abstract: This imaging device comprises: an image sensor which converts an optical image, captured by pixels arranged in an array on an imaging surface, into an image signal and outputs the image signal; a modulation unit which is provided to a light-receiving surface of the image sensor and modulates the intensity of light; and an image processing unit which carries out image processing on an output image output by the image sensor. The modulation unit has a grating substrate and a first grating pattern formed on a first surface of the grating substrate facing a surface of the image sensor near the light-receiving surface. The grating pattern is configured from a plurality of concentric circles having pitches which are inversely proportional to the distance from the origin point of at least one reference coordinate, the concentric circles do not overlap with each other within the grating pattern.

Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a grating pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate, from the sensor image, a complex sensor image comprising a complex number; and a data transmission unit configured to transmit the complex sensor image.

Abstract: An optical transmission device that is provided at a first site includes: an optical transmitter that transmits a first optical signal that includes first ID information to a second site using a first wavelength; and an optical receiver that receives a second optical signal that includes second ID information and that is transmitted using the first wavelength from the second site. When the first ID information matches the second ID information, the optical transmitter transmits a wavelength report that indicates a second wavelength to the second site using the first wavelength. When the optical receiver receives a completion report that indicates the wavelength report has been received at the second site, the optical transmitter transmits an optical signal to the second site using the second wavelength, and the optical receiver ceases to receive an optical signal of the first wavelength from the second site.

Abstract: A wavelength reallocation assisting method provides information relating to wavelength allocation to optical lines in a wavelength division multiplexing optical network in which a plurality of nodes are connected by optical fibers. The wavelength reallocation assisting method includes: outputting first allocation state information that indicates a sum of bandwidths of respective wavelength slots used by at least one of the optical lines among a plurality of wavelength slots that are available in the wavelength division multiplexing optical network; and outputting second allocation state information that indicates a maximum value of individual used bandwidths obtained with respect to the respective optical fibers, each of the individual used bandwidths indicating a sum of bandwidths of wavelength slots allocated to corresponding optical lines established in a corresponding optical fiber.

Abstract: A mobile communication terminal A performs near field communication with another mobile communication terminal B by a near field communication unit and obtains a communication distance with another mobile communication terminal B. An information acquisition unit acquires information on another mobile communication terminal B, information on the mobile communication terminal A, or both of the information when the communication distance to the other mobile communication terminal B is equal to or more than a threshold. An abnormality determination unit determines an abnormal state of the mobile communication terminal A based on information (position information, wearing information, or the like) acquired by the information acquisition unit. When the abnormality determination unit determines that the mobile communication terminal A is in the abnormal state, a lock unit locks the mobile communication terminal A, the other mobile communication terminal B or both of those mobile communication terminals.

Abstract: An imaging device includes: an image sensor that outputs, as an image signal, light received at a light-receiving surface; a phase modulation element provided in close to the light-receiving surface, which has a grating pattern composed of multiple zones arranged in a concentric form to modulate the phase of light passing through the grating pattern toward the surface; and an image processing unit that executes image processing for the image signal output from the sensor. The spacing between the phase modulation element and the image sensor is set so that the duty ratio of the full width at half maximum for a bright section to the width for one period of a projection image of the concentric grating pattern is 0.5 or less in the case of light incidence from a point light source disposed at a distance of a subject in the axial direction of a concentric circle of the grating pattern.

Abstract: A network design device includes a processor. The processor determines a second wavelength allocation based on a first wavelength allocation that indicates a wavelength allocation for a plurality of optical lines established in a wavelength division multiplexing optical network. The processor searches for a disconnection target optical line that is requested to be disconnected in order to realize a transition from the first wavelength allocation to the second wavelength allocation from among the plurality of optical lines. The processor generates procedure information that indicates a procedure of the transition from the first wavelength allocation to the second wavelength allocation based on a difference between the first wavelength allocation and the second wavelength allocation and a searched disconnection target optical line.

Abstract: An imaging device includes: a modulator with a first pantoscopic grating pattern, which is configured to modulate light intensity by passage through the first pantoscopic grating pattern; an image sensor configured to convert light passing through the modulator, to image data, and output the image data; and an image processing unit configured to conduct image processing of restoring an image with the use of the image date output from the image sensor, and the imaging device is characterized in that: the first pantoscopic grating pattern is configured to include multiple basic patterns; and each of the basic patterns has the shape of a concentric circle.

Abstract: An optical information recording/reproducing device which records an interference pattern between a reference beam and a signal beam as a hologram in an optical information storage medium or reproduces information from the optical information storage medium, the optical information recording/reproducing device includes a light source unit which emits a light beam, a signal-beam/reference-beam optical unit which generates the signal beam and the reference beam from the light beam and irradiates the optical information storage medium, a spatial light modulator which adds information to the generated signal beam, a photodetection unit which detects a reproduced beam from the optical information storage medium and acquires a reproduced image constituted by a plurality of pixels arrayed in a lattice shape, and a signal processing unit which performs equalization processing to a first pixel of the reproduced image to have a target characteristic.

Abstract: A network design device includes a processor. The processor determines a second wavelength allocation based on a first wavelength allocation that indicates a wavelength allocation for a plurality of optical lines established in a wavelength division multiplexing optical network. The processor searches for a disconnection target optical line that is requested to be disconnected in order to realize a transition from the first wavelength allocation to the second wavelength allocation from among the plurality of optical lines. The processor generates procedure information that indicates a procedure of the transition from the first wavelength allocation to the second wavelength allocation based on a difference between the first wavelength allocation and the second wavelength allocation and a searched disconnection target optical line.

Abstract: An optical information recording/reproducing device which records an interference pattern between a reference beam and a signal beam as a hologram in an optical information storage medium or reproduces information from the optical information storage medium, the optical information recording/reproducing device includes a light source unit which emits a light beam, a signal-beam/reference-beam optical unit which generates the signal beam and the reference beam from the light beam and irradiates the optical information storage medium, a spatial light modulator which adds information to the generated signal beam, a photodetection unit which detects a reproduced beam from the optical information storage medium and acquires a reproduced image constituted by a plurality of pixels arrayed in a lattice shape, and a signal processing unit which performs equalization processing to a first pixel of the reproduced image to have a target characteristic.

Abstract: A wavelength reallocation assisting method provides information relating to wavelength allocation to optical lines in a wavelength division multiplexing optical network in which a plurality of nodes are connected by optical fibers. The wavelength reallocation assisting method includes: outputting first allocation state information that indicates a sum of bandwidths of respective wavelength slots used by at least one of the optical lines among a plurality of wavelength slots that are available in the wavelength division multiplexing optical network; and outputting second allocation state information that indicates a maximum value of individual used bandwidths obtained with respect to the respective optical fibers, each of the individual used bandwidths indicating a sum of bandwidths of wavelength slots allocated to corresponding optical lines established in a corresponding optical fiber.

Abstract: A processor executes the following processes. An obtainment process obtains a first number of lines, which represents a number of lines that are deleted after changing, among lines that pass through the same line route. An extraction process extracts a line for which a first demand, which is accommodated before and after changing, does not exist. The extraction process further extracts lines in descending order of a band of the first demand from among lines including first demands until a total number of extracted lines reaches the first number of lines when the number of the extracted lines is smaller than the first number of lines. Then, a fixation process fixes a first demand accommodated in a line that has not been extracted. A deletion process deletes the extracted lines. A determination process determines an order of changing line routes of demands.

Abstract: An optical information reproducing device which reproduces information from an optical information storage medium recording, as the information, a hologram which is an interference pattern between a signal beam and a reference beam, the hologram corresponding to an angle of the reference beam being a page, the device includes an image distortion learning unit which detects, based on a two-dimensional reproduction signal generated by reproducing the page, a marker which is a known pattern for detecting a position of two-dimensional data relating to the page, and learns a distortion amount which is the difference between a position of the detected marker and an ideal position, a detection unit which detects, based on the distortion amount, position information on the marker from the page, and an image distortion correction unit which corrects, based on the position information on the marker detected by the detection unit, an image distortion in the page.

Abstract: A transmission device is used for a network that includes a plurality of working paths and a plurality of protection paths bypassing a relevant working path for each working paths. The transmission device includes a data plane unit that transmits and receives data to and from other transmission devices; and a signaling processing unit that performs switching, when a signaling message requesting activation to switch to a first protection path corresponding to a first working path is received, from the first working path to the first protection path, wherein, when the first working path is configured as a subset of a second working path and a second protection path corresponding to the second working path is provided, the signaling processing unit performs switching from the first working path to the first protection path and performs switching from the second working path to the second protection path.