Abstract: A light-source device includes a plurality of light emitters; and a plurality of optical elements through which laser beams emitted from the plurality of light emitters pass. The plurality of optical elements includes: a first optical element configured to emit a laser beam of a first divergence angle; and a second optical element configured to emit a laser beam of a second divergence angle smaller than the first divergence angle.

Abstract: A detection apparatus includes a light source device, including a plurality of light-emitting elements, configured to irradiate light onto a detection target by dividing an illuminance area into a plurality of illuminance regions; and circuitry configured to switch an illuminance level at each of the plurality of illuminance regions with a plurality of illuminance levels; detect a plurality of detection data of the detection target at the plurality of illuminance regions by switching the illuminance level at each of the plurality of illuminance regions with the plurality of illuminance levels when irradiating the light onto the detection target; and synthesize the plurality of detection data of the detection target.

Abstract: A lighting module includes a voltage-current controller to control power externally supplied, a capacitor charged with power supplied from the voltage-current controller, a laser light source to emit laser light driven by a current from the capacitor, first and second FETs electrically connected in series to the laser light source, and circuitry that controls a first voltage value applied to the first FET and a second voltage value applied to the second FET, to control a resistance value of the second FET. The first FET controls a pulse width of the current flowing through the laser light source in accordance with the first voltage value applied to a gate thereof. The second FET changes in resistance value in accordance with the second voltage value applied to a gate thereof and controls, with the resistance value, a peak value of the current flowing through the laser light source.

Abstract: A light source module, a distance-measuring apparatus, and a mobile object. The light source module includes a first substrate, a light source disposed on the first substrate to emit light, the light source having a first terminal and a second terminal, a field-effect transistor disposed on the first substrate, the field-effect transistor having a third terminal and a fourth terminal, and a charge storage unit disposed on the first substrate, the charge storage unit having a fifth terminal and a sixth terminal. In the light source module, the first terminal and the sixth terminal are coupled to each other, the second terminal and the third terminal are coupled to each other. In the light source module, the fourth terminal and the fifth terminal are at an equivalent electrical potential. The distance-measuring apparatus includes the light source module. The includes the distance-measuring apparatus.

Abstract: A light source device includes a light source and a projection optical system. The light source includes a plurality of light emitters. The projection optical system is configured to emit light emitted from the light source. A light emission amount per unit area in a light emission region of the light source corresponding to an irradiated region where a magnification of the projection optical system is relatively large, is larger than a light emission amount per unit area in a light emission region corresponding to an irradiated region where a magnification of the projection optical system is relatively small.

Abstract: An optical element includes a first surface; and a second surface facing the first surface; a light-transmissive portion to transmit and diverge a light beam incident on the light-transmissive portion from outside of the first surface to emit a diverging light beam to outside of the second surface; and a light-deflecting portion to deflect a light beam incident on the first surface from the outside of the first surface, in a direction different from a direction of specular reflection on the first surface outside the first surface.

Abstract: An oral drug includes powdered poly (R)-3-?-hydroxybutyric acid having a weight-average molecular weight of 10,000 to 700,000. The oral drug includes the powdered poly (R)-3-?-hydroxybutyric acid having (a) a purity of 70% or more and (b) a weight-average molecular weight of 10,000 to 590,000. The oral drug includes the powdered poly (R)-3-?-hydroxybutyric acid having (a) a purity of 90% or more and (b) a weight-average molecular weight of 10,000 to 590,000. An oral drug for increasing a ketone body concentration in blood that includes powdered poly (R)-3-?-hydroxybutyric acid having a weight-average molecular weight of 10,000 to 700,000. According to the present disclosure, an increased ketone body concentration in the blood is sustained for a longer period of time.

Abstract: A lighting module includes a voltage-current controller to control power externally supplied, a capacitor charged with power supplied from the voltage-current controller, a laser light source to emit laser light driven by a current from the capacitor, first and second FETs electrically connected in series to the laser light source, and circuitry that controls a first voltage value applied to the first FET and a second voltage value applied to the second FET, to control a resistance value of the second FET. The first FET controls a pulse width of the current flowing through the laser light source in accordance with the first voltage value applied to a gate thereof. The second FET changes in resistance value in accordance with the second voltage value applied to a gate thereof and controls, with the resistance value, a peak value of the current flowing through the laser light source.

Abstract: A light-source device includes a plurality of light emitters; and a plurality of optical elements through which laser beams emitted from the plurality of light emitters pass. The plurality of optical elements includes: a first optical element configured to emit a laser beam of a first divergence angle; and a second optical element configured to emit a laser beam of a second divergence angle smaller than the first divergence angle.

Abstract: A detection apparatus includes a light source device, including a plurality of light-emitting elements, configured to irradiate light onto a detection target by dividing an illuminance area into a plurality of illuminance regions; and circuitry configured to switch an illuminance level at each of the plurality of illuminance regions with a plurality of illuminance levels; detect a plurality of detection data of the detection target at the plurality of illuminance regions by switching the illuminance level at each of the plurality of illuminance regions with the plurality of illuminance levels when irradiating the light onto the detection target; and synthesize the plurality of detection data of the detection target.

Abstract: An optical device includes an array light source including a plurality of light emitting elements and configured to emit mutually incoherent light; and a lens array including a plurality of lenses and configured to transmit light emitted from the light emitting elements. Light emitted from one light emitting element of the plurality of light emitting elements of the array light source is incident on at least two lenses of the plurality of lenses of the lens array.

Abstract: A pulsed electromagnetic-wave generator includes an excitation light source, a laser resonator, a pulse generating unit, and a wavelength converting unit. Excitation light from the excitation light source enters the laser resonator. The pulse generating unit is configured to generate a pulsed light group including at least two or more pulses with different frequencies (?) and different oscillation timings (t) in one excitation process of the excitation light source, an oscillation frequency difference (??) between the pulses in the pulsed light group being an integral multiple of a Free Spectral Range (FSR) of the laser resonator. The pulsed light group enters the wavelength converting unit. The wavelength converting unit is configured to generate a pulsed electromagnetic wave in which a wavelength of each pulse in the pulsed light group is converted.

Abstract: A method for producing a blood glucose spike suppressor includes preparing a culture solution containing bacteria capable of accumulating poly(R)-3-hydroxybutyric acid therein, recovering a residue containing granules of poly(R)-3-hydroxybutyric acid by performing a solid-liquid separation on the culture solution, and generating a powder of poly(R)-3-hydroxybutyric acid by drying the residue.

Abstract: A distance measurement device configured to measure a distance to at least one object to be measured includes a light receiving element; a condenser optical system configured to focus light onto the light receiving element, and having field curvature aberration; and a variable deflector disposed in an optical path between the light receiving element and the condenser optical system. The light receiving element receives light deflected by the variable deflector.

Abstract: A terahertz wave generation apparatus includes a plurality of laser light sources configured to generate laser beams respectively having different wavelengths; and a terahertz wave generating element configured to receive the laser beams having different wavelengths and generate a terahertz wave from the laser beams. The plurality of laser light sources include fiber laser light sources respectively including parameters that can be controlled independently, and the terahertz wave generating element includes a nonlinear optical crystal.

Abstract: A pulsed electromagnetic-wave generator includes an excitation light source, a laser resonator, a pulse generating unit, and a wavelength converting unit. Excitation light from the excitation light source enters the laser resonator. The pulse generating unit is configured to generate a pulsed light group including at least two or more pulses with different frequencies (?) and different oscillation timings (t) in one excitation process of the excitation light source, an oscillation frequency difference (??) between the pulses in the pulsed light group being an integral multiple of a Free Spectral Range (FSR) of the laser resonator. The pulsed light group enters the wavelength converting unit. The wavelength converting unit is configured to generate a pulsed electromagnetic wave in which a wavelength of each pulse in the pulsed light group is converted.

Abstract: A terahertz wave generation apparatus includes a plurality of laser light sources configured to generate laser beams respectively having different wavelengths; and a terahertz wave generating element configured to receive the laser beams having different wavelengths and generate a terahertz wave from the laser beams. The plurality of laser light sources include fiber laser light sources respectively including parameters that can be controlled independently, and the terahertz wave generating element includes a nonlinear optical crystal.

Abstract: A vehicular pointer-type residual quantity meter comprises: a display panel that has a scale part which allows a driver to recognize a residual quantity, and a non-scale part that differs from the scale part; a pointer unit that is disposed behind the display panel; a pointer driver body unit that carries out a movement of the pointer unit in a real space; and a control unit that controls the pointer driver body unit in so that the pointer unit indicates one of metering regions in the scale part in replay to a current residual quantity. The control part controls the pointer driver body unit so that when the residual quantity decreases to zero, the pointer unit moves from a metering region corresponding to a zero residual quantity in a direction opposite to a metering region corresponding to a residual quantity value greater than zero to the non-scale part of the display panel.

Abstract: A vehicular pointer-type residual quantity meter comprises: a display panel that has a scale part which allows a driver to recognize a residual quantity, and a non-scale part that differs from the scale part; a pointer unit that is disposed behind the display panel; a pointer driver body unit that carries out a movement of the pointer unit in a real space; and a control unit that controls the pointer driver body unit in so that the pointer unit indicates one of metering regions in the scale part in replay to a current residual quantity. The control part controls the pointer driver body unit so that when the residual quantity decreases to zero, the pointer unit moves from a metering region corresponding to a zero residual quantity in a direction opposite to a metering region corresponding to a residual quantity value greater than zero to the non-scale part of the display panel.

Abstract: In the present invention, while making it feel as though a prescribed image is moving, the burden of information recognition on a user is reduced. A measurement device is provided with a display device that displays images in a display region and a control unit that controls such display operation. At least a portion of the content of a first image displayed in a first position in the display region and the content of a second image displayed in a second position in the display region are shared. The control unit causes the display device to do the following: erase the first image displayed in the first position; after the first image is erased, to move a pattern image showing a prescribed pattern from the first position to the second position; and after the pattern image is moved to the second position, to display the second image in the second position.