Abstract: A light source including a light-emitting device including a substrate, and a first light-emitting element and a second light-emitting element that are located on the substrate. The light source further includes a drive circuit to supply a current to drive the light-emitting device, a switch configured to switch between a first state of supplying a current to only the first light-emitting element and a second state of supplying a current to only the second light-emitting element, and a timing controller configured to control a timing of an operation of the switch. A light emission peak wavelength of the first light-emitting element is 430 nm or greater and less than 490 nm. A light emission peak wavelength of the second light-emitting element is 490 nm or greater and less than 570 nm. A forward voltage of the second light-emitting element is less than a forward voltage of the first light-emitting element.

Abstract: There are provided a trailer tracking apparatus, a trailer tracking method, and a trailer tracking system. The trailer tracking apparatus includes: an acquisition unit configured to acquire, from at least one camera configured to capture an image of a predetermined movement path of a trailer in a yard, a captured image of the camera; a database configured to store identification information on the trailer and information on a position of the trailer in the yard based on the captured image of the camera in association with each other; and a visualization processing unit configured to output information on a current position of the trailer specified by a visualization instruction from an external browser apparatus to the external browser apparatus based on the database.

Abstract: A blocking mechanism of a privacy protection shutter for a camera is provided on an outer edge portion of a display of an electronic device. The privacy protection shutter includes a rotation pivot with which the privacy protection shutter is rotatable; a blocking portion that covers a lens of the camera to disable the camera to image at a block position; and an operation portion configured to cause the privacy protection shutter to rotate with the rotation pivot so as to move the blocking portion between the block position and an open position at which the lens is not covered by the blocking portion.

Abstract: A ranging device includes: a light projection circuit configured to project laser light; a light receiving circuit configured to receive reflected light of the laser light projected by the light projection circuit; and a processor configured to: measure a time from a time when the light projection circuit projects the laser light to a time when the light receiving circuit receives the reflected light; calculate a first distance from the light projection circuit to the light receiving circuit via a ranging target, by using the time; and specify a third distance between the light projection circuit and the ranging target, by using a light projection angle of the laser light, the first distance, and a second distance between the light projection circuit and the light receiving circuit when a ratio of the first distance with respect to the second distance is equal to or less than a predetermined threshold.

Abstract: A light-emitting device includes first and second light-emitting elements arranged along a first direction; at least one light-transmissive member having a lateral surface and covering the upper surfaces of the first and second light-emitting elements; and a light-reflective member in contact with at least portions of the lateral surfaces of the first and second light-emitting elements, and the lateral surface of the light-transmissive member. The light-transmissive member has first and second surfaces exposed from the light-reflective member and located above the upper surfaces of the first and second light-emitting elements, respectively. The light-reflective member includes a first portion located between the first surface and the second surface in the first direction above the first and second surfaces. The first portion includes at least one concave curved surface in a first cross-section extending along the first direction and perpendicular to the upper surface of the first light-emitting element.

Abstract: A scanning-type distance measurement apparatus that includes a two-dimensional micro electro mechanical system (MEMS) mirror that reflects a laser beam includes: a memory; and a processor coupled to the memory and configured to: drive, on an axis that controls an angle of view out of two axes orthogonal to each other of the two-dimensional MEMS mirror, the axis of the two-dimensional MEMS mirror with a drive signal; and control a scanning angle range of the laser beam when a drive waveform of the drive signal is offset by an offset amount to shift a center angle of the scanning angle range, on the basis of the offset amount according to a shift direction from the center angle.

Abstract: A light emitting device includes at least three light emitting elements arranged side by side, and one or more light transmissive members each containing a phosphor and covering the light emitting elements. The at least three light emitting elements include two outer light emitting elements arranged on outer sides, and an inner light emitting element arranged between the two outer light emitting elements and having a different peak emission wavelength than a peak emission wavelength of the two outer light emitting elements. The phosphor has a longer peak emission wavelength than the peak emission wavelengths of the outer light emitting elements and the peak emission wavelength of the inner light emitting element. The two outer light emitting elements and the inner light emitting element are connected in series.

Abstract: A light-emitting device includes first and second light-emitting elements arranged along a first direction; at least one light-transmissive member having a lateral surface and covering the upper surfaces of the first and second light-emitting elements; and a light-reflective member in contact with at least portions of the lateral surfaces of the first and second light-emitting elements, and the lateral surface of the light-transmissive member. The light-transmissive member has first and second surfaces exposed from the light-reflective member and located above the upper surfaces of the first and second light-emitting elements, respectively. The light-reflective member includes a first portion located between the first surface and the second surface in the first direction above the first and second surfaces. The first portion includes at least one concave curved surface in a first cross-section extending along the first direction and perpendicular to the upper surface of the first light-emitting element.

Abstract: A light-emitting device includes first and second light-emitting elements arranged along a first direction; at least one light-transmissive member having a lateral surface and covering the upper surfaces of the first and second light-emitting elements; and a light-reflective member in contact with at least portions of the lateral surfaces of the first and second light-emitting elements, and the lateral surface of the light-transmissive member. The light-transmissive member has first and second surfaces exposed from the light-reflective member and located above the upper surfaces of the first and second light-emitting elements, respectively. The light-reflective member includes a first portion located between the first surface and the second surface in the first direction above the first and second surfaces. The first portion includes at least one concave curved surface in a first cross-section extending along the first direction and perpendicular to the upper surface of the first light-emitting element.

Abstract: The light-emitting device includes a first light-emitting element having an emission peak wavelength of 430 nm or more and less than 490 nm, a second light-emitting element having an emission peak wavelength of 490 nm or more and 570 nm or less, a support body at which the first light-emitting element and the second light-emitting element are disposed, and a light-transmissive member containing a red phosphor and covering the first light-emitting element and the second light-emitting element. A content density of the red phosphor in the light-transmissive member in a space between the first and second light-emitting elements is higher in a part below an upper surface of the second light-emitting element than in a part above the upper surface thereof.

Abstract: A laser sensor includes: a micro electro mechanical systems (MEMS) mirror that performs scanning in a reflection direction of laser light of a light emitting device on a first axis in a resonance direction and a second axis in a non-resonant direction; and a processor that performs control that synchronizes a drive cycle of the second axis with the drive cycle of the second axis of the MEMS mirror mounted on another laser sensor, using a timing designated based on the drive cycle of the first axis.

Abstract: There is provided an information processing apparatus installed in a mobile object, the information processing apparatus including: a hardware processor that detects entry/exit of a user into/from the mobile object; and controls a security level in the mobile object, in accordance with entry/exit of a user into/from the mobile object.

Abstract: A light-emitting device includes first and second light-emitting elements arranged along a first direction; at least one light-transmissive member having a lateral surface and covering the upper surfaces of the first and second light-emitting elements; and a light-reflective member in contact with at least portions of the lateral surfaces of the first and second light-emitting elements, and the lateral surface of the light-transmissive member. The light-transmissive member has first and second surfaces exposed from the light-reflective member and located above the upper surfaces of the first and second light-emitting elements, respectively. The light-reflective member includes a first portion located between the first surface and the second surface in the first direction above the first and second surfaces. The first portion includes at least one concave curved surface in a first cross-section extending along the first direction and perpendicular to the upper surface of the first light-emitting element.

Abstract: A distance measuring apparatus includes: a plurality of two-dimensional scanning laser sensors; and a control circuit configured to control the plurality of two-dimensional scanning laser sensors, wherein each of the two-dimensional scanning laser sensors includes a light projection system configured to project laser light for scanning a measurement target, and a light reception system configured to outputs a signal corresponding to a distance to the measurement target by using a multi-division light receiving element configured to receive return light of the laser light reflected by the measurement target, and the control circuit is configured to synchronize a scanning timing of the laser light projected by a light projection system of each of adjacent two-dimensional scanning laser sensors among the plurality of two-dimensional scanning laser sensors, and cause the adjacent two-dimensional scanning laser sensors to horizontally scan the laser light in a direction opposite from each other.

Abstract: A light emitting device includes at least three light emitting elements arranged side by side, and one or more light transmissive members each containing a phosphor and covering the light emitting elements. The at least three light emitting elements include two outer light emitting elements arranged on outer sides, and an inner light emitting element arranged between the two outer light emitting elements and having a different peak emission wavelength than a peak emission wavelength of the two outer light emitting elements. The phosphor has a longer peak emission wavelength than the peak emission wavelengths of the outer light emitting elements and the peak emission wavelength of the inner light emitting element. The two outer light emitting elements and the inner light emitting element are connected in series.

Abstract: A head-mounted display to be mounted on a head of the user includes a display panel to display an image, a lighting device to supply light to the display device, the lighting device including at least one light source including a blue light emitting element emitting blue light, and a red phosphor to emit red light when excited by the blue light from the blue light emitting element, the red phosphor including a complex fluoride red phosphor and a nitride red phosphor having a content ratio smaller than that of the complex fluoride red phosphor, a lighting controller to control driving of the light source in synchronization with the image display by the display device so that a one-frame display period in the display device includes a turn-on period and a turn-off period, and a lens.

Abstract: The light-emitting device includes a first light-emitting element having an emission peak wavelength of 430 nm or more and less than 490 nm, a second light-emitting element having an emission peak wavelength of 490 nm or more and 570 nm or less, a support body at which the first light-emitting element and the second light-emitting element are disposed, and a light-transmissive member containing a red phosphor and covering the first light-emitting element and the second light-emitting element. A content density of the red phosphor in the light-transmissive member in a space between the first and second light-emitting elements is higher in a part below an upper surface of the second light-emitting element than in a part above the upper surface thereof.

Abstract: A light emitting device includes at least three light emitting elements arranged side by side, and one or more light transmissive members each containing a phosphor and covering the light emitting elements. The at least three light emitting elements include two outer light emitting elements arranged on outer sides, and an inner light emitting element arranged between the two outer light emitting elements and having a different peak emission wavelength than a peak emission wavelength of the two outer light emitting elements. The phosphor has a longer peak emission wavelength than the peak emission wavelengths of the outer light emitting elements and the peak emission wavelength of the inner light emitting element. The two outer light emitting elements and the inner light emitting element are connected in series.

Abstract: An electrode set for chemical reaction includes a substrate, and electrodes for reduction and oxidation reactions alternately arranged on the same surface of the substrate.

Abstract: The light-emitting device includes a first light-emitting element having an emission peak wavelength of 430 nm or more and less than 490 nm, a second light-emitting element having an emission peak wavelength of 490 nm or more and 570 nm or less, a support body at which the first light-emitting element and the second light-emitting element are disposed, and a light-transmissive member containing a red phosphor and covering the first light-emitting element and the second light-emitting element. A content density of the red phosphor in the light-transmissive member in a space between the first and second light-emitting elements is higher in a part below an upper surface of the second light-emitting element than in a part above the upper surface thereof.