Abstract: An optical semiconductor device includes: a substrate having a (100) face as a surface; a first protrusion protruding from the substrate in a first direction and including a first mesa having a laminate structure in which a plurality of semiconductor layers are layered on the surface in the first direction, the first mesa including an active layer as one of the semiconductor layers; and a second protrusion protruding from the substrate in the first direction at a position distance from the first protrusion in a second direction intersecting with the first direction, and the second protrusion having a laminate structure in which a plurality of semiconductor layers are layered on the surface in the first direction. An end face in the first direction of the second protrusion has a substantially polygonal shape, and each side of the end face is non-parallel to a virtual line extending in [0-11] direction.

Abstract: An optical semiconductor device includes: a substrate; a first protrusion protruding from the substrate in a first direction and including a first mesa having a laminate structure in which a plurality of semiconductor layers are layered on the substrate in the first direction, the first mesa including an active layer as one of the semiconductor layers; and a second protrusion protruding from the substrate in the first direction at a distance from the first protrusion in a second direction intersecting with the first direction, the second protrusion having a same laminate structure as the laminate structure of the first mesa, wherein one of the plurality of semiconductor layers is exposed at an end portion of the second protrusion in the first direction.

Abstract: An optical apparatus includes a mirror configured to irradiate light onto a target and to guide reflected light from the target, a first motor configured to rotate the mirror about a first axis, a second motor configured to rotate the mirror about a second axis, and a processor configured to control the first motor and the second motor. An intersection of the first axis and a reflective surface of the mirror is located at a position different from the second axis. A reflection optical axis surface including a reflection optical axis as an optical axis of the reflected light passing through the intersection of the reflective surface is not parallel to a plane including the second axis.

Abstract: A measurement apparatus includes a mirror configured to irradiate an object with scanning light and to reflect reflected light from the object, a first driving unit configured to rotate the mirror about a first axis parallel to a horizontal direction, a second driving unit configured to rotate the mirror about a second axis parallel to a vertical direction, and a processor configured to control the first driving unit and the second driving unit and to acquire data on a shape of the object based on the reflected light. The processor acquires information about control of the second driving unit based on a lower limit value of a rotational speed of the second driving unit, which allows the second driving unit to rotate at a constant speed, and a target value of density of the data.

Abstract: A light source includes: a seed light source configured to output incoherent seed light having a predetermined bandwidth; and a booster amplifier that is a semiconductor optical amplifier configured to optically amplify the seed light entered through a first end facet and output the amplified light through a second end facet. The booster amplifier has nL being set, which is a product of a refractive index n and a chip length L, so as to simultaneously suppress relative intensity noise (RIN) and ripple in the amplified light.

Abstract: An image processing apparatus according to the present invention calculates, even in a case where a region of a part as an observation target included in an image capturing range is different between a plurality of medical images in different time phases, a degree of slippage of the region of the part as the observation target with high accuracy.

Abstract: A light source includes: a seed light source configured to output incoherent seed light with a predetermined bandwidth; and a booster amplifier that is a semiconductor optical amplifier configured to optically amplify the seed light input from a first facet, and output the amplified seed light as amplified light from a second facet, wherein the first facet and the second facet of the booster amplifier are subjected to a reflection reduction treatment, the booster amplifier is configured to operate in a gain saturated state, and relative intensity noise (RIN) and ripple are simultaneously suppressed in the amplified light.

Abstract: An information processing apparatus acquires projection data obtained by dividing a subject into first and second divided areas and capturing the first and second divided areas, the projection data including first projection data obtained by capturing a dynamic state of the subject in a first capturing range including the first divided area and second projection data obtained by capturing the dynamic state of the subject in a second capturing range including the second divided area. The apparatus acquires similarity relating to the dynamic state of the subject on a basis of projection data of a first partial area and projection data of a second partial area, and acquires a first timing for reconstructing an image of the first divided area and a second timing for reconstructing an image of the second divided area, on a basis of the similarity.

Abstract: An image processing apparatus includes processing circuitry configured: to obtain a plurality of images taken so as to include a target site of a subject in temporal phases; and to calculate an index indicating a state of an adhesion at a boundary between a first site of the subject corresponding to a first region and a second site of the subject corresponding to a second region, by using classification information used for classifying each of pixels into one selected from between a first class related to the first region and a second class related to a second region positioned adjacent to the first region in a predetermined direction, on a basis of mobility information among the images in the temporal phases with respect to the pixels in the images that are arranged in the predetermined direction across the boundary between the first region and the second region of the images.

Abstract: An image processing apparatus according to the present invention calculates, even in a case where a region of a part as an observation target included in an image capturing range is different between a plurality of medical images in different time phases, a degree of slippage of the region of the part as the observation target with high accuracy.

Abstract: An optical integrated device includes a substrate a passive waveguide region and an active region. The active region and the passive waveguide region include a first mesa structure having an upper cladding portion formed of a same material as the upper cladding layer. The passive waveguide region includes a second spot size converter having the first mesa structure, a second mesa structure having a first core portion, a lower cladding portion, and a second core portion that are formed of same materials as the first core layer, the lower cladding layer, and the second core layer, respectively. The second mesa structure has a width wider than a width of the first mesa structure, and the width of the first mesa structure continuously changes along a longitudinal direction in which light is guided through the second core portion, the width being along a direction perpendicular to the longitudinal direction.

Abstract: An image projection apparatus includes an optical element configured to change a light amount of light emitted from the light source, an information acquirer configured to acquire information on a gradation of the image signal, a corrector configured to correct the image signal in accordance with a change in the light amount, and a controller configured to correct the image signal based on at least one of first correction data used to correct the image signal in accordance with the change in the light amount caused by controlling the optical element, and second correction data used to correct the image signal in accordance with the change in the light amount caused by controlling the supply power.

Abstract: According to one embodiment, a support information-generation apparatus includes processing circuitry. The processing circuitry extracts a vertebral body region from a medical image and calculates a first volume of a vertebral body targeted for treatment by percutaneous vertebroplasty. The processing circuitry estimates a second volume of the targeted vertebral body related to an estimated shape. The processing circuitry calculates, based on a difference between the first volume and the second volume, a volume of an object to be inserted so as to deform the targeted vertebral body into the estimated shape.

Abstract: An optical element has a substrate; and first to third optical waveguides formed on the substrate and each having a lower clad layer, a core layer, and an upper clad layer, the core layer having a larger refractive index than the lower clad layer and the upper clad layer. The first optical waveguide is optically connected to the second optical waveguide, and the second optical waveguide is optically connected to the third optical waveguide. The first to third optical waveguides have a mesa structure formed in a mesa shape in which at least the upper clad layer and an upper part of the core layer project above the lower clad layer. The core height of the third optical waveguide is lower than the core height of the first optical waveguide. The mesa width of the third optical waveguide is narrower than the mesa width of the first optical waveguide.

Abstract: A display apparatus includes a light source, a light amount control unit configured to control an amount of light emitted from the light source, an image processing unit configured to control a signal level of the image signal, and a control unit configured to control the light amount control unit and the image processing unit based on the image signal. The control unit performs control such that, when the image signal changes, the signal level of the image signal controlled by the image processing unit becomes a signal level corresponding to the changed image signal more quickly than the light amount controlled by the light amount control unit reaches a light amount corresponding to the changed image signal.

Abstract: A semiconductor optical integrated device includes: a substrate; at least a lower cladding layer, a waveguide core layer, and an upper cladding layer sequentially layered on the substrate, a buried hetero structure waveguide portion having a waveguide structure in which a semiconductor cladding material is embedded near each of both sides of the waveguide core layer; and a ridge waveguide portion having a waveguide structure in which a semiconductor layer including at least the upper cladding layer protrudes in a mesa shape. Further, a thickness of the upper cladding layer in the buried hetero structure waveguide portion is greater than a thickness of the upper cladding layer in the ridge waveguide portion.

Abstract: According to one embodiment, a nuclear medicine diagnostic apparatus includes a counting unit, a region of interest setting unit, a normalization unit, and an image generation unit. The counting unit counts radiation emitted from radioisotopes in an imaging region of an object. The ROI setting unit sets a region of interest (ROI) in the imaging region. The normalization unit determines association between count values and pixel values of display pixels for the ROI in accordance with a distribution of the count values of the display pixels corresponding to the ROI. The image generation unit generates an image of the ROI based on the association between the count values and the pixel values for the ROI.

Abstract: According to one embodiment, a support information-generation apparatus includes processing circuitry. The processing circuitry extracts a vertebral body region from a medical image and calculates a first volume of a vertebral body targeted for treatment by percutaneous vertebroplasty. The processing circuitry estimates a second volume of the targeted vertebral body related to an estimated shape. The processing circuitry calculates, based on a difference between the first volume and the second volume, a volume of an object to be inserted so as to deform the targeted vertebral body into the estimated shape.

Abstract: An optical integrated device includes a substrate a passive waveguide region and an active region. The active region and the passive waveguide region include a first mesa structure having an upper cladding portion formed of a same material as the upper cladding layer. The passive waveguide region includes a second spot size converter having the first mesa structure, a second mesa structure having a first core portion, a lower cladding portion, and a second core portion that are formed of same materials as the first core layer, the lower cladding layer, and the second core layer, respectively. The second mesa structure has a width wider than a width of the first mesa structure, and the width of the first mesa structure continuously changes along a longitudinal direction in which light is guided through the second core portion, the width being along a direction perpendicular to the longitudinal direction.

Abstract: An image output apparatus according to the present invention includes: communicating units; an acquiring unit configured to acquire, for each of the communicating unit connected to an image display apparatus, correspondence information; a setting unit configured to set, for each of the communicating unit, an output mode; and an outputting unit configured to output, for each of the communicating unit, image data based on an output mode set with respect to the communicating unit, wherein the setting unit automatically sets a first output mode with respect to a communicating unit for which the correspondence information has been acquired.