Abstract: There is provided a projector including a plurality of laser diodes and a rectangular display device on to which light emitted from the plurality of laser diodes is shone, wherein the display device is disposed so that a direction of a major axis of an elliptic section of light emitted from each of the plurality of laser diodes becomes substantially parallel to a direction of longer sides of the display device.

Abstract: There is provided a light source unit having an excitation light shining device in which a plurality of semiconductor light emitting elements are arranged in rows and columns so that in the plurality of semiconductor light emitting elements, the direction of a major axis of an elliptic cross section of a light beam emitted from one semiconductor light emitting element is normal to the directions of major axes of elliptic cross sections of light beams emitted from adjacent light emitting elements.

Abstract: A light source unit having a luminescent material plate tight sealing construction with a dust-proof measure where a luminescent material plate is sealed tight from a circumference thereof by attaching tightly a luminescent material plate holding metallic plate to a collective lens and a projector having the light source unit are provided. The light source unit has an excitation light source device emitting excitation light and a luminous light emitting device, and the luminous light emitting device includes a luminescent material plate on to which excitation light from the excitation light source device is shone to emit luminous light of a different wavelength from the excitation light, a substrate on which the luminescent material plate is rested, a collective lens covering the luminescent material plate, and a lens holder holding the collective lens, whereby the luminescent material plate is sealed tight by at least the substrate and the collective lens.

Abstract: There is provided a light source unit having an excitation light shining device in which a plurality of semiconductor light emitting elements are arranged in rows and columns so that in the plurality of semiconductor light emitting elements, the direction of a major axis of an elliptic cross section of a light beam emitted from one semiconductor light emitting element is normal to the directions of major axes of elliptic cross sections of light beams emitted from adjacent light emitting elements.

Abstract: There is provided a projector including a plurality of laser diodes and a rectangular display device on to which light emitted from the plurality of laser diodes is shone, wherein the display device is disposed so that a direction of a major axis of an elliptic section of light emitted from each of the plurality of laser diodes becomes substantially parallel to a direction of longer sides of the display device.

Abstract: A light source unit having a luminescent material plate tight sealing construction with a dust-proof measure where a luminescent material plate is sealed tight from a circumference thereof by attaching tightly a luminescent material plate holding metallic plate to a collective lens and a projector having the light source unit are provided. The light source unit has an excitation light source device emitting excitation light and a luminous light emitting device, and the luminous light emitting device includes a luminescent material plate on to which excitation light from the excitation light source device is shone to emit luminous light of a different wavelength from the excitation light, a substrate on which the luminescent material plate is rested, a collective lens covering the luminescent material plate, and a lens holder holding the collective lens, whereby the luminescent material plate is sealed tight by at least the substrate and the collective lens.

Abstract: A blood pressure measurement device includes a case, an electrocardiogram electrode, a pulse wave sensor, an estimation portion, and a display portion. The case has a peripheral surface to be held with both hands. The electrocardiogram electrode detects an electrocardiogram signal associated with a movement of a heart through at least one of the hands. The pulse wave sensor detects a pulse wave signal associated with the movement of the heart through a least one of the hands. The estimation portion estimates a blood pressure based on the electrocardiogram signal and the pulse wave signal. The display portion displays the blood pressure estimated by the estimation portion.

Abstract: A wearable input device includes a pair of ring-shaped signal electrodes and a current sensor arranged in parallel in the direction of the axis of a finger. The current sensor is provided outside an area sandwiched between the signal electrodes. An alternating current signal is applied between the signal electrodes. When the top end of the finger with this device worn thereon is brought into contact with any other body site, a current flows through the current measure point of the current sensor. When the top end of the finger is not in contact with any other body site, no current flows through the measurement point of the current sensor. Based on the measured current, it is determined whether the finger is in contact with any other body site. A command is outputted to an external device according to the result of the determination.

Abstract: A projector including a light source unit, a display device and a projector control means, wherein the light source unit includes a fluorescent plate 130 including fluorescent material layers 131 disposed adjacent for emitting light in predetermined wavelength ranges by absorbing light, a diffusion plate 140 including a diffusion layer 141 disposed adjacent to the fluorescent material layers 131 for emitting light in a diffusing fashion, a light source for shining light on the layers 131, 141, a driving device for rotating the plates 130, 140, and a light cut-off plate 160 having a light cut-off portion 161, the light cut-off plate 160 capable of rotating together with the plates 130, 140 and movable so that the light cut-off portion 161 covers an area on the diffusion plate 140 where light is to be shone by the locked state being released when the diffusion plate 140 comes off.

Abstract: A projector is provided which includes a distance measuring unit which can accurately measure distances to a plurality of points on a surface of a screen using light rays. The projector of the invention has the distance measuring unit for measuring distances to the plurality of points on the surface of the screen, which includes a plurality of light ray units for irradiating light rays onto the screen and one light receiving element for receiving the light rays which are reflected on the surface of the screen, and a tilt angle calculation unit for calculating a tilt angle of the screen relative to the projector based on the distances to the plurality of points on the surface of the screen which are measured by the distance measuring unit.

Abstract: A projector includes a light source unit, a light source-side optical system for guiding light from the light source unit to a display device, the display device, a projection-side optical system for projecting an image emitted from the display device on to a screen, and a distance measuring system 1 and has a projector control unit for controlling the light source unit and the display device. In addition, the distance measuring system 1 has a laser beam emitter 2 for emitting a laser beam to a distance measurement target object, a receiving lens 4 for concentrating reflected light from the distance measurement target object and a receiving element 3 for receiving the reflected light from the distance measurement target object which has passed through the receiving lens 4, and optical axes of the receiving lens 4 and the receiving element 3 are made to be aligned with an optical axis of the emitted laser beam.

Abstract: A projector including a light source unit, a display device and a projector control means, wherein the light source unit includes a fluorescent plate 130 including fluorescent material layers 131 disposed adjacent for emitting light in predetermined wavelength ranges by absorbing light, a diffusion plate 140 including a diffusion layer 141 disposed adjacent to the fluorescent material layers 131 for emitting light in a diffusing fashion, a light source for shining light on the layers 131, 141, a driving device for rotating the plates 130, 140, and a light cut-off plate 160 having a light cut-off portion 161, the light cut-off plate 160 capable of rotating together with the plates 130, 140 and movable so that the light cut-off portion 161 covers an area on the diffusion plate 140 where light is to be shone by the locked state being released when the diffusion plate 140 comes off.

Abstract: A wearable input device includes a pair of ring-shaped signal electrodes and a current sensor arranged in parallel in the direction of the axis of a finger. The current sensor is provided outside an area sandwiched between the signal electrodes. An alternating current signal is applied between the signal electrodes. When the top end of the finger with this device worn thereon is brought into contact with any other body site, a current flows through the current measure point of the current sensor. When the top end of the finger is not in contact with any other body site, no current flows through the measurement point of the current sensor. Based on the measured current, it is determined whether the finger is in contact with any other body site. A command is outputted to an external device according to the result of the determination.

Abstract: A projector includes a light source unit, a light source-side optical system for guiding light from the light source unit to a display device, the display device, a projection-side optical system for projecting an image emitted from the display device on to a screen, and a distance measuring system 1 and has a projector control unit for controlling the light source unit and the display device. In addition, the distance measuring system 1 has a laser beam emitter 2 for emitting a laser beam to a distance measurement target object, a receiving lens 4 for concentrating reflected light from the distance measurement target object and a receiving element 3 for receiving the reflected light from the distance measurement target object which has passed through the receiving lens 4, and optical axes of the receiving lens 4 and the receiving element 3 are made to be aligned with an optical axis of the emitted laser beam.

Abstract: A projector is provided which includes a distance measuring unit which can accurately measure distances to a plurality of points on a surface of a screen using light rays. The projector of the invention has the distance measuring unit for measuring distances to the plurality of points on the surface of the screen, which includes a plurality of light ray units for irradiating light rays onto the screen and one light receiving element for receiving the light rays which are reflected on the surface of the screen, and a tilt angle calculation unit for calculating a tilt angle of the screen relative to the projector based on the distances to the plurality of points on the surface of the screen which are measured by the distance measuring unit.