Abstract: A photodetector includes a semiconductor substrate; a light receiving part for signal detection and an infrared light receiving part which are formed in the semiconductor substrate and are covered at least by first color filters having a common color; and second color filters which overlap with the first color filters on the infrared light receiving part and are configured to block light in a wavelength range transmitting through the first color filters.

Abstract: A photodetector includes a semiconductor substrate; a light receiving part for signal detection and an infrared light receiving part which are formed in the semiconductor substrate and are covered at least by first color filters having a common color; and second color filters which overlap with the first color filters on the infrared light receiving part and are configured to block light in a wavelength range transmitting through the first color filters.

Abstract: A composite photodiode includes a first photodiode, a second photodiode, and a third photodiode, each of which has an anode and a cathode. The cathode of the first photodiode is connected to a first circuit connection node, the anode of the first photodiode is commonly connected to the anode of the second photodiode and is connected to a second circuit connection node, the cathode of the second photodiode is commonly connected to the cathode of the third photodiode and is connected to a third circuit connection node, and the anode of the third photodiode is connected to a fourth circuit connection node.

Abstract: A light emitting unit emits light including first light and second light. A light receiving unit outputs a signal of a level in accordance with intensity of incoming light. A first optical sensor is configured to outputs a first signal of a level in accordance with intensity of the first light entering the light receiving unit. A second optical sensor outputs a second signal of a level in accordance with intensity of the second light entering the light receiving unit. Based on the second signal, a controller determines whether or not the living body information sensor and a surface of the living body are in close contact with each other. The controller generates the information related to the living body based on the first signal obtained when the living body information sensor and the surface of the living body are in close contact with each other.

Abstract: A proximity sensor which is capable of facilitating a measure against crosstalk for different sets is provided. The proximity sensor includes a light emitting device, and a light receiving device including a plurality of light receiving parts, wherein the light receiving device has a function of arbitrarily selecting any of the plurality of light receiving parts.

Abstract: An optical sensor (10) includes a first switch (SW1) and a second switch (SW2), these switches are switched between a first step and a second step and thus the coupling of light receiving portions (photodiodes) and three analog-to-digital converters (ADCs) is switched. In the first step of the switch, photocurrents generated in a blue light receiving portion (BLUE), a green light receiving portion (GREEN) and a red light receiving portion (RED) are processed in real time. In the second step, photocurrents generated in an infrared light receiving portion (Ir), an environmental light receiving portion (CLEAR) and the green light receiving portion (GREEN) are processed. The photocurrents of the infrared light receiving portion (Ir) and the environmental light receiving portion (CLEAR) generated in the first step are calculated from a ratio of the two photocurrents measured in the green light receiving portion (GREEN).

Abstract: A pulse wave sensor includes: a white LED emitting white light to a human body; a G sensor converting, into a first electrical signal, green light included in light emitted from the white LED and reflected within the human body; an R sensor converting, into a second electrical signal, red light included in the light emitted from the white LED and reflected within the human body; and an arithmetic control unit configured to generate a signal showing a heart rate based on a level difference between the first electrical signal and the second electrical signal. Therefore, a distance between the G sensor and the R sensor does not have to be increased, so that an apparatus can be reduced in size.

Abstract: Disclosed is a mobile device comprising an acceleration detection unit for detecting acceleration relative to the device; a condition identification unit; and a power supply controller which determines, from a combination of the output of the acceleration detection unit and the output of the condition identification unit, whether or not to begin to supply power to the device.

Abstract: An optical sensor device includes at least two light receiving units in which a plurality of types of light receiving elements is integrated in the same vertical structure. In addition, the optical sensor device further includes a switch unit configured to select at least one of the light receiving elements in each of the light receiving units in a time-division manner.

Abstract: A proximity sensor includes: a support substrate having a main surface and a rear surface; a surface emission laser; a light receiving part; and a resin body, wherein the surface emission laser is disposed on the main surface so as to emit light in a direction away from the rear surface; wherein the resin body is made of a light transmissive resin, and is disposed on the main surface so as to cover the surface emission laser and the light receiving part, and a portion of the resin body between the surface emission laser and the light receiving part is formed of the same light transmissive resin as the other portions, and wherein the light receiving part is disposed at a position at which the light emitted from the surface emission laser is reflected at an object and reflected light from the object is incident onto the light receiving part.

Abstract: A visible light communication system comprising a first electronic device having a display part and a second electronic device 20 having a brightness sensor, visible light communication between the first electronic device and the second electronic device occurring as a result of the brightness sensor detecting visible light (solid arrow) output from the display part.

Abstract: A proximity sensor which is capable of facilitating a measure against crosstalk for different sets is provided. The proximity sensor includes a light emitting device, and a light receiving device including a plurality of light receiving parts, wherein the light receiving device has a function of arbitrarily selecting any of the plurality of light receiving parts.

Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.

Abstract: A photodetector includes a semiconductor substrate; a light receiving part for signal detection and an infrared light receiving part which are formed in the semiconductor substrate and are covered at least by first color filters having a common color; and second color filters which overlap with the first color filters on the infrared light receiving part and are configured to block light in a wavelength range transmitting through the first color filters.

Abstract: A pulse wave sensor includes: a white LED emitting white light to a human body; a G sensor converting, into a first electrical signal, green light included in light emitted from the white LED and reflected within the human body; an R sensor converting, into a second electrical signal, red light included in the light emitted from the white LED and reflected within the human body; and an arithmetic control unit configured to generate a signal showing a heart rate based on a level difference between the first electrical signal and the second electrical signal. Therefore, a distance between the G sensor and the R sensor does not have to be increased, so that an apparatus can be reduced in size.

Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.

Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.

Abstract: Disclosed is a semiconductor device, comprising a driver that causes first through third infrared LEDs to emit light sequentially at prescribed times; an infrared light sensor that receives infrared light that is emitted by the first through the third infrared LEDs and reflected by a reflecting object, and generates photoelectric currents at levels corresponding to the intensity of the received infrared light; an amplifier that generates first through third infrared light information, on the basis of the photoelectric current that is generated by the infrared light sensor, and which denote the intensity of the infrared light; an A/D converter; and a linear/logarithmic converter apparatus. It is thus possible to sense the movement of the reflecting object on the basis of the first through the third infrared light information.

Abstract: An optical sensor device includes at least two light receiving units in which a plurality of types of light receiving elements is integrated in the same vertical structure. In addition, the optical sensor device further includes a switch unit configured to select at least one of the light receiving elements in each of the light receiving units in a time-division manner.

Abstract: Disclosed is a mobile device comprising an acceleration detection unit for detecting acceleration relative to the device; a condition identification unit; and a power supply controller which determines, from a combination of the output of the acceleration detection unit and the output of the condition identification unit, whether or not to begin to supply power to the device.