Abstract: To improve resolution while suppressing the number of light emitting elements arranged in an optical module. The optical module is provided with an optical element that converts a light beam emitted from the light emitting element into a substantially parallel light beam or a light beam having a predetermined angular width, and a diffraction element that diffracts the light beam to separate into a plurality of light beams. The diffraction element generates diffracted lights in n direction, and an angle ?x formed between one diffraction direction and a side in a direction in which the light emitting element is arranged satisfies tan?1 (b/3a). A diffraction angle ?x of the diffracted light satisfies m·sgrt((3?a){circumflex over (?)}2+?b{circumflex over (?)}2)/(2(2n+1)). Note that, ?a and ?b are angular differences of two light beams caused by inter-light emission distances a and b. Furthermore, n is a natural number, and m is a natural number excluding an integral multiple of 2n+1.

Abstract: [Object] To provide an illumination apparatus and a ranging apparatus, the illumination apparatus including a light-emitting element that includes a plurality of light emitter groups, the illumination apparatus being suitable to drive the light emitter for each light emitter group. [Solving Means] An illumination apparatus according to the present technology includes a light-emitting element and a drive circuit. The light-emitting element includes a plurality of first light emitters, a plurality of second light emitters, a lower electrode that is connected to the plurality of first light emitters and the plurality of second light emitters, a first upper electrode that is connected to each of the plurality of first light emitters, and a second upper electrode that is connected to each of the plurality of second light emitters.

Abstract: Provided is an electronic device capable of reducing the possibility of malfunction. An electronic device is provided with: a first substrate including a drive circuit; a second substrate including a light-emitting unit driven by the drive circuit and mounted on one surface side of the first substrate; and a light-shielding unit provided on the first substrate and configured to shield at least a part of the drive circuit from light emitted by the light-emitting unit.

Abstract: In an optical module that irradiates an object with a light beam and detects reflected light thereof, a linear light beam without distortion is emitted regardless of an incident angle of a scanned light beam. The light emitting unit includes a plurality of light emitting elements arranged in a predetermined direction. The converging unit converges the light beam emitted from each of the plurality of light emitting elements into a substantially parallel light beam or a light beam having a predetermined angular width at a predetermined diaphragm center point. The light conversion unit converts the light beam through the converging unit into a linear light beam in a line direction substantially orthogonal to the arrangement direction of the light emitting unit by the optical surface. The light detection unit detects reflected light from the object with respect to the linear light beam.

Abstract: A lighting device includes: a light-emitting element having multiple first light-emitting sections and multiple second light-emitting sections; a first optical member that causes multiple pieces of first light outputted from the multiple first light-emitting sections and multiple pieces of second light outputted from the multiple second light-emitting sections to be substantially collimated, and outputs the multiple pieces of first light and the multiple pieces of second light; and a second optical member that shapes beam shapes of the multiple pieces of first light, beam shapes of the multiple pieces of second light, or both the beam shapes of the multiple pieces of first light and the multiple pieces of second light, and outputs the multiple pieces of first light and the multiple pieces of second light in a manner that the beam shapes are different between the multiple pieces of first light and the multiple pieces of second light.

Abstract: The present technique reduces the wiring inductance between a semiconductor laser and a laser driver in a semiconductor laser driving apparatus. A semiconductor laser driving apparatus includes a substrate, a laser driver, and a semiconductor laser. The substrate incorporates the laser driver. The semiconductor laser has at least one light emitting point. The semiconductor laser is mounted on one surface of the substrate in such a manner that an electrode of the light emitting point and a pattern of the substrate are connected to each other via a bump. Connection wiring electrically connects the laser driver and the semiconductor laser to each other with a wiring inductance of 0.5 nanohenries or less. A sealing portion seals a connection terminal portion of the semiconductor laser for the substrate.

Abstract: [Object] To provide a light-emitting element that has a vertical-cavity surface-emitting laser structure and is suitable for a long-distance light irradiation, and a ranging apparatus. [Solving Means] A light-emitting element according to the present technology includes a plurality of light emitters, a first electrode terminal, and a second electrode terminal. The plurality of light emitters is a plurality of light emitters one-dimensionally or two-dimensionally arranged in a direction that is vertical to an optical axis corresponding to light that exits each of the plurality of light emitters, each of the plurality of light emitters being a vertical-cavity surface-emitting laser element, each of the plurality of light emitters including a first electrode and a second electrode, each of the plurality of light emitters emitting the light due to current flowing from the first electrode to the second electrode. The first electrode terminal is electrically connected to the first electrode.

Abstract: A surface emission laser driving method according to an embodiment of the present technology includes the following two steps. (A) Generating drive pulses to be sequentially outputted to, out of a plurality of surface emission lasers disposed on a same substrate, each of the surface emission lasers selected as light-emission targets, on the basis of the number of surface emission lasers selected as the light-emission targets and a monitoring temperature that is immediately prior to light emission of each of the surface emission lasers selected as the light-emission targets. (B) Outputting the generated drive pulses to each of the surface emission lasers selected as the light-emission targets.

Abstract: A generation unit generates adjustment information to adjust a first clock indicating a timing of illumination of a laser beam to scan on a screen, based on a scanning position to be scanned by the laser beam. On the basis of the adjustment information, adjustment unit adjusts the first clock to a second clock different from the first clock. Then, in synchronization with the second clock, the laser beam is allowed to illuminate as a pixel. This may be applicable to a projection apparatus for projecting an image on the screen, for example.

Abstract: A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.

Abstract: A generation unit generates adjustment information to adjust a first clock indicating a timing of illumination of a laser beam to scan on a screen, based on a scanning position to be scanned by the laser beam. On the basis of the adjustment information, adjustment unit adjusts the first clock to a second clock different from the first clock. Then, in synchronization with the second clock, the laser beam is allowed to illuminate as a pixel. This may be applicable to a projection apparatus for projecting an image on the screen, for example.

Abstract: A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.

Abstract: A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.

Abstract: A generation unit generates adjustment information to adjust a first clock indicating a timing of illumination of a laser beam to scan on a screen, based on a scanning position to be scanned by the laser beam. On the basis of the adjustment information, adjustment unit adjusts the first clock to a second clock different from the first clock. Then, in synchronization with the second clock, the laser beam is allowed to illuminate as a pixel. This may be applicable to a projection apparatus for projecting an image on the screen, for example.

Abstract: Disclosed herein is a laser driving circuit, including: a plurality of laser driving video current generation circuits configured to generate a plurality of kinds of laser driving current for driving a plurality of laser light sources configured to emit laser light having wavelengths different from each other based on an inputted video signal; a high frequency superposition section configured to superpose a high frequency signal having a frequency higher than a frequency band of the video signal on the laser driving current generated by the laser driving video current generation circuits; and a waveform correction section configured to correct a waveform of the high frequency signal.

Abstract: Disclosed herein is a laser driving circuit, including: a plurality of laser driving video current generation circuits configured to generate a plurality of kinds of laser driving current for driving a plurality of laser light sources configured to emit laser light having wavelengths different from each other based on an inputted video signal; a high frequency superposition section configured to superpose a high frequency signal having a frequency higher than a frequency band of the video signal on the laser driving current generated by the laser driving video current generation circuits; and a waveform correction section configured to correct a waveform of the high frequency signal.

Abstract: A generation unit generates adjustment information to adjust a first clock indicating a timing of illumination of a laser beam to scan on a screen, based on a scanning position to be scanned by the laser beam. On the basis of the adjustment information, adjustment unit adjusts the first clock to a second clock different from the first clock. Then, in synchronization with the second clock, the laser beam is allowed to illuminate as a pixel. This may be applicable to a projection apparatus for projecting an image on the screen, for example.

Abstract: A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.

Abstract: A generation unit generates adjustment information to adjust a first clock indicating a timing of illumination of a laser beam to scan on a screen, based on a scanning position to be scanned by the laser beam. On the basis of the adjustment information, adjustment unit adjusts the first clock to a second clock different from the first clock. Then, in synchronization with the second clock, the laser beam is allowed to illuminate as a pixel. This may be applicable to a projection apparatus for projecting an image on the screen, for example.

Abstract: Disclosed herein is a laser driving circuit, including: a plurality of laser driving video current generation circuits configured to generate a plurality of kinds of laser driving current for driving a plurality of laser light sources configured to emit laser light having wavelengths different from each other based on an inputted video signal; a high frequency superposition section configured to superpose a high frequency signal having a frequency higher than a frequency band of the video signal on the laser driving current generated by the laser driving video current generation circuits; and a waveform correction section configured to correct a waveform of the high frequency signal.