Abstract: Methods and systems are described for optimizing particular protocol parameters used in phase contrast magnetic resonance (PCMR) imaging. Optimal settings for PCMR protocol parameters such as coordinates, field of view (FOV), frequency/phase encoding lines, number of excitations (NEX), slice thickness, views per segment (VPS), and coil setting may be determined based upon the cut position/orientation of an image containing a vessel of interest, vessel size, length of the vessel segment, and heart rate. An optimal velocity encoding gradient (VENC) for PCMR may also be determined that both avoids aliasing and ensures an adequate signal-to-noise ratio.

Abstract: Asymmetric rotating stray light baffles are provided for conformal dome two-axis seekers having arch corrector optics mounted on the outer gimbal. A pair of side skirt baffles are mounted on opposite sides of the arch corrector optics on the outer gimbal extending forward beyond the transparent arch adjacent but not touching the inner surface of the dome and extending aft beyond the forward most receiver optic for all fields of regard (FOR).

Abstract: Provided is a vibration actuator comprising a drive unit that generates a drive force; a vibrating component that vibrates according to the drive force from the drive unit; a rotating body that receives the vibration of the vibrating component to rotate; and a converting section that changes a contact force between the vibrating component and the rotating body according to size of a load acting on the rotating body.

Abstract: To provide a lubricant deterioration detecting device having a high degree of freedom in arranging within the bearing assembly or the like and capable of stably detecting the status of deterioration of the lubricant without being affected by the thickness of the lubricant and a change in temperature and also to provide a detector incorporated bearing assembly equipped with such lubricant deterioration detecting device, the lubricant deterioration detecting device includes a light source, a plurality of light detecting components for detecting rays of light emitted from the light source and subsequently transmitted through a lubricant, and a determining unit. The plural light detecting components have respective light detecting faces sequentially displaced in position. The determining unit compares respective signal strengths of outputs from the plural light detecting components to detect the status of deterioration of the lubricant.

Abstract: It is an object to provide a photoelectric conversion device which can solve the problem of leakage current or noise caused when the photoelectric conversion device is connected to an external circuit by amplifying the current flows through the photoelectric conversion element, and which can widen dynamic range of the output voltage which is obtained in accordance with the current flowing through the photoelectric conversion element. The photoelectric conversion device includes a voltage detection circuit, and a photoelectric conversion circuit including a photoelectric conversion element, a current mirror circuit, and a field effect transistor. The current mirror circuit is a circuit which amplifies and outputs a photocurrent generated at the photoelectric conversion element. The voltage detection circuit is connected to the gate terminal of the field effect transistor so as to detect generated voltage.

Abstract: An apparatus includes an array containing N sub-diffraction limit light sensors each having an associated light absorption activation threshold for switching from a reset state to an activated state, where the light absorption activation values lie within a range of values. The apparatus further includes a processor connected with a memory including computer program code, where the memory and computer program code are configured to, with the processor, cause the apparatus at least to perform estimating an intensity of light that illuminates the array based on electrical outputs of the array.

Abstract: In a target detecting technique using a laser sensor, misdetection can be reduced while maintaining a wide detecting range. A target detecting method for detecting a target by emitting a laser beam diagonally downward from an installing position of a laser emitting and receiving portion. The method includes the steps of: obtaining distance information from the laser emitting and receiving portion to an object to be detected; determining, when the object to be detected approaches the laser emitting and receiving portion, whether the tracking of the object to be detected is stopped or not; and determining, when the tracking of the object to be detected is stopped, whether the object to be detected is the target or a non-target based on distance information immediately before the tracking of the object to be detected is stopped.

Abstract: A light source lamp cooling apparatus according to the present invention includes: diaphragm air compressor (31); an ejector which ejects cooling air directly onto a portion to be cooled of a light source lamp in lamp unit (10); pressure detector (43) which detects pressure of the cooling air by means of pressure sensor (42) inserted in piping; air piping which connects air compressor (31) and the ejector; and a lamp controller which controls turning off of the light source lamp according to the air pressure detected by pressure detector (43). Air compressor (31) is driven at a high control frequency and a hollow, flexible silicon tube is used as air piping to reduce pulsation of air.

Abstract: A photoelectric encoder includes: a scale; a detection head; fibers through which light that is to be irradiated on the scale and light reflected by the scale propagates; first and second cables each having a space in which the fibers are partially disposed; and a case that encloses a light source that supplies light to one of the fibers and a light-sensitive element that receives the reflected light propagating through the others of the fibers and converts the received light into an electric signal. The first cable, the second cable, and the case are disposed in this order in the direction of propagation of the reflected light. The positions of the fibers are fixed relative to one another inside the first cable in the direction orthogonal to the direction of length of the fibers and variable relative to one another inside the second cable in the orthogonal direction.

Abstract: A heat-dissipating device used in a projection display apparatus with an air outlet includes a fence module, at least one resilient member, and a shape memory alloy module. The fence module is disposed at the air outlet and includes at least one guiding plate with a pivot. The resilient member exerts a first force on the guiding plate to enable the guiding plate to rotate on the pivot, and the shape memory alloy module deforms when heated to exert a second force on the guiding plate to enable the guiding plate to rotate on the pivot.

Abstract: A light source module adapted to be used in a projection apparatus includes a first LED device, a second LED device, and a light switching element. The first LED device emits a first light beam along a first light path during a first time period. The second LED device emits a second light beam along a second light path during a second time period. The light switching element is disposed at an intersection of the first light path and the second light path for permitting one of the first light beam along the first light path and the second light beam along the second light path to be transmitted along a third light path.

Abstract: A projector adapted to perform display by projecting an image on a projection surface, includes: a light source; a light modulator adapted to modulate light from the light source into image light representing the image; a projection optical system adapted to project the image light modulated by the light modulator on the projection surface; a keystone distortion correction section adapted to perform a keystone distortion correction process for correcting keystone distortion of the image to be projected on the projection surface; a detection section adapted to detect start of movement of the projector; and a control section adapted to cancel the keystone distortion correction process in the keystone distortion correction section in response to detection of start of movement of the projector in the detection section.

Abstract: A laser projector can generate a pulse signal capable of being generated according to the resolution of the clock signal, the pulse signal having a basic period and a basic pulse width each infinitely approximated to the characteristics of the resonance frequency. Moreover, because the laser projector can generate a pulse signal capable of correcting the errors led to be included in the approximated pulse signal, the laser projector can drive the scanning section with a horizontal vibration width corresponding to the resonance frequency, and can suitably display a projected image on a projection plane.

Abstract: A rear projection type image display apparatus. The apparatus includes a projector that projects an image having a relatively high luminance, and a transmission type screen installed at an image formation plane of a projection light from the projector. The apparatus also includes a first polarizing plate having a first polarization direction disposed in front of an exit pupil of the projector, and a second polarizing plate having a second polarizing direction that is substantially orthogonal to the first polarizing direction disposed near a rear surface side opposite to an irradiation surface of the transmission type screen.

Abstract: In a radiation image detection apparatus having a radiation image detector that includes the following stacked in the order listed below: a bias electrode, a photoconductive layer, a substrate side charge transport layer, and an active matrix substrate, the radiation image detector does not include an area adjacent to the interface between the substrate side charge transport layer and photoconductive layer having an oxygen or chlorine element density not less than two times the average density of oxygen or chlorine element in the substrate side charge transport layer.

Abstract: A rear projection image display apparatus that includes one or more projectors that project an image having a high luminance, a first screen having a fibrous texture and that diffracts light incident from the one or more projectors in accordance with a fiber roughness of the fibrous texture, and a second screen attached to the first screen on a side of the first screen opposite the one or more projectors and that diffuses light incident from the first screen and outputs the diffused light.

Abstract: An optical switch having a housing, a light source and a light detector. The light source and light detector are located remote from the housing. The light source is connected to the housing with a first light guide, and the light detector is connected to the housing with a second light guide. The first and second light guide cables have distal ends positioned through the housing and are optically aligned but separated by a gap. The switch includes a device to interrupt a light beam that is usually adapted to removably occupy the gap. The switch may be embodied in a float, and includes part of the switch as a glowable member.

Abstract: The invention relates to a device comprising a photosensitive element producing an electric charge as a function of the radiation incident thereon and a charge integrator connected to the photosensitive element and converting the charge to a voltage. According to the invention, the device comprises a comparator capable of comparing the voltage delivered by the integrator with a threshold voltage, and a memory unit for storing the instant when the voltage delivered by the integrator exceeds the threshold voltage.

Abstract: A chip-stacked image sensor obtained by embodying an image sensor cell in two chips and combining the chips with each other is provided. The chip-stacked image sensor includes first and second semiconductor chips. The first semiconductor chip includes a plurality of image signal sensing cells for generating image charges corresponding to image signals sensed by at least four photodiodes and outputting the generated image charges through at least two common terminals and a plurality of image charge transmission pads. The second semiconductor chip includes a plurality of image signal conversion cells for converting the image signals into electrical signals and a plurality of image charge receiving pads. Here, the image charges generated by the image signal sensing cells are transmitted to corresponding image signal conversion cells via the plurality of image charge transmission pads and the plurality of image charge receiving pads.

Abstract: An autofocus apparatus and a method achieve a higher level of speed and robustness, and are particularly suited for fluorescence microscopy of biological samples, automated microscopy and scanning microscopy. A high speed is achieved via a light pattern in the sample, detected spatially resolved by a detector generating at least two signals corresponding to a reflex pattern of the light pattern. The two signals are subtracted generating a positioning signal and the focus of the objective in the sample is adjusted depending on the positioning signal.