Abstract: A gas sensor includes a light receiving element, a light emitting element, an integrated circuit, a lead frame, and a sealing member configured to seal these into a package. The lead frame includes at least one die pad portion and a plurality of terminal portions, the die pad portion includes a first region having a first thickness and a second region having a second thickness thinner than the first thickness, the integrated circuit is arranged on the second region of the die pad portion, the light emitting element is electrically connected to at least one of the plurality of terminal portions, the light receiving element is electrically connected to the integrated circuit and is arranged on the opposite side to the light emitting element with the integrated circuit interposed therebetween, and the integrated circuit is electrically connected to at least one of the plurality of terminal portions.

Abstract: An optical filter for an optical device comprises a substrate and a multilayer film having a plurality of layers with different refractive indexes formed on at least one side of the substrate. The multilayer film has a structure in which a first layer and a second layer are alternately stacked. The first layer has a refractive index of 1.2 or more and 2.5 or less, and the second layer has a refractive index of 3.2 or more and 4.3 or less in a wavelength range of 6 ?m to 10 ?m. The optical filter includes a wavelength range having an average transmittance of 70% or more with a width of 50 nm or more in a wavelength range of 6 ?m to 10 ?m, and has a maximum transmittance of 10% or more in a wavelength range of 12.5 ?m to 20 ?m.

Abstract: A gas sensor includes, in a single housing section, a substrate mounting surface 31 mounted with a substrate including a light emitter and a light receiver and a mirror section including plural reflectors. Then, in the housing section, all of the plural reflectors are integrally molded on an inner surface of the housing section to multiple reflect light emitted from the light emitter and cause the light to enter the light receiver in an opposing direction of one side and the other side in an extension direction of the substrate mounting surface.

Abstract: The position detection apparatus is provided comprising: an acquisition section that acquires a magnetic field pattern from a detection target apparatus comprising a detection unit having a plurality of magnetic sensor sections and a moving unit configured to provide the magnetic field pattern corresponding to the position with respect to the detection unit to the plurality of magnetic sensor sections; a reference pattern output section that outputs reference patterns respectively corresponding to each of a plurality of candidate positions of the moving unit with respect to the detection unit; and a detection section that detects which of the plurality of candidate positions is a position of the moving unit with respect to the detection unit based on a result of comparison of the acquired magnetic field pattern and the reference pattern corresponding to each of the plurality of candidate positions.

Abstract: Provided is a gas detection device that is compact and can perform accurate measurement. The gas detection device includes a light-emitting section (10), a light-receiving section (20), and a light-guiding section (30) that guides light from the light-emitting section (10) to the light-receiving section (20). The light-guiding section (30) includes a mirror (50) and has a shape of part of at least one spheroid. The mirror (50) is provided at a position of or in proximity to a first focal point of the spheroid. The light-emitting section (10) and the light-receiving section (20) are each provided at a position of or in proximity to a focal point of the spheroid that is not the first focal point. The light-emitting section (10) and the light-receiving section (20) are arranged in parallel to a major axis direction of the spheroid.

Abstract: Provided are a gas concentration measurement system, gas concentration computation section, and gas concentration measurement method enabling high-accuracy gas concentration measurement. The gas concentration measurement system includes: a gas concentration measurement section (10a) including a light-emitting element (11) and a first sensor element; a light-emitting element drive section that drives the light-emitting element; a signal acquisition section (21) that acquires at least an output signal of the first sensor element, a first drive signal that is a first voltage value or first current value of the light-emitting element, and a second drive signal that is a second voltage value or second current value of the light-emitting element; and a computation section (22) that computes gas concentration based on signals acquired by the signal acquisition section.

Abstract: A program may cause a computer to perform the steps of: acquiring a target posture information indicating a target posture of a movable member with m degrees of freedom components associated with a movement or rotation of the movable member; deriving a correction information indicating a corrective component for correcting an error in respective target positions of m+n positions of the movable member due to at least one of n degrees of freedom components other than m degrees of freedom, based on at least one value of m+n values corresponding to m+n positions of the movable member indicated in respective position informations; deriving respective target positions of each of m+n positions of the movable member based on m degrees of freedom components and the corrective component; and outputting respective target position informations indicating the respective target positions to each of m+n control circuits.

Abstract: Provided are a gas sensor system, a gas sensor control device, and a control method that enable high-accuracy measurement without causing a user to wait. The gas sensor system (1) includes: a gas sensor (10) that performs concentration measurement of a measurement target gas in air; a heater (17) that heats the gas sensor; an air intake port (11) and an air discharge port (12) that are connected to the gas sensor; and a control device (20) that performs heating control of operating the heater so as to heat the gas sensor. The control device acquires temperature information for the gas sensor and temperature information for a space from which the air intake port takes in air and performs the heating control based on the temperature information for the gas sensor and the temperature information for the space from which the air intake port takes in air.

Abstract: Provided is a magnetic field measuring apparatus for: acquiring the measurement data measured by a magnetic sensor array that is configured by arraying the plurality of magnetic sensor cells to form a surface covering at least a part of a target object to be measured; performing signal separation on a magnetic field spatial distribution indicated by the measurement data based on a position and magnetic sensitivity of each magnetic sensor; generating a calibration magnetic field at a position on a straight line that can be drawn without crossing the plurality of magnetic sensor cells from the measurement space outside the measurement space; and calibrating a sensor error for the magnetic sensor based on a separation error in a case where signal separation has been performed on a spatial distribution of the calibration magnetic field.

Abstract: Provided is an infrared optical device that is easy to produce and has high performance. The infrared optical device having a peak at a center wavelength ? includes: a semiconductor substrate; and a thin film laminate portion including a first reflecting layer, an active layer, a p-type semiconductor layer, and a first electrode layer formed on the semiconductor substrate in stated order. The first reflecting layer and the p-type semiconductor layer are directly connected to the active layer. The first reflecting layer is constructed through layering of a low-refractive-index layer that is an n-type semiconductor layer and a high-refractive-index layer. The low-refractive-index layer is placed closest to the active layer in the first reflecting layer. The active layer and the p-type semiconductor layer each have a higher refractive index than the low-refractive-index layer. The center wavelength ? is 7 ?m or more at room temperature.

Abstract: Provided are a gas sensor system, a gas sensor control device, and a control method that enable high-accuracy measurement without causing a user to wait. The gas sensor system (1) includes: a reception section (30) that receives a startup signal from externally to the gas sensor system; a gas sensor (10) that performs concentration measurement of a measurement target gas in air; an air intake port (11) and an air discharge port (12) that are connected to the gas sensor; at least one fan (13); and a control device (20) that starts up the gas sensor through reception of the startup signal, that acquires temperature information for the gas sensor, and that, based on the temperature information for the gas sensor, performs cooling control of operating the fan so as to cool the gas sensor from startup of the gas sensor, before initiation of the concentration measurement.

Abstract: Provided is a gas sensor that can suppress characteristic variation caused by deformation of a semiconductor substrate. The gas sensor (1) includes a substrate (redistribution layer 30), a light-emitting element (11) provided at a front surface (30a) or embedded in the substrate, a light-receiving element (12) that is provided at the front surface or embedded in the substrate and that receives light emitted from the light-emitting element, and a plurality of external connection terminals (40) at a rear surface (30b) that is an opposite surface to the front surface of the substrate. At least a portion of the plurality of external connection terminals is electrically connected to the light-emitting element and the light-receiving element. The plurality of external connection terminals is arranged such that, in plan view, the light-emitting element and the light-receiving element are not present on a line linking any two external connection terminals.

Abstract: Provided is a sensor system having an improved SNR. The sensor system (1) includes: a sensor (gas sensor 10) including a light-emitting element (11) and a detecting element (light-receiving element 12) that detects a signal that is based on light emitted from the light-emitting element; and a computation device (20) that, by taking an interval in which the light-emitting element emits light as an ON interval and an interval in which the light-emitting element does not emit light as an OFF interval, uses the signal as detected in the ON interval and the signal as detected in a plurality of the OFF interval to compute one measurement value.

Abstract: A gas sensor includes a light receiving element, a light emitting element, an integrated circuit, a lead frame, and a sealing member configured to seal these into a package. The lead frame includes at least one die pad portion and a plurality of terminal portions, the die pad portion includes a first region having a first thickness and a second region having a second thickness thinner than the first thickness, the integrated circuit is arranged on the second region of the die pad portion, the light emitting element is electrically connected to at least one of the plurality of terminal portions, the light receiving element is electrically connected to the integrated circuit and is arranged on the opposite side to the light emitting element with the integrated circuit interposed therebetween, and the integrated circuit is electrically connected to at least one of the plurality of terminal portions.

Abstract: An optical device comprises an optical filter having a substrate and a multilayer film, and an infrared light emitting and receiving device having a first conductive-type semiconductor layer, an active layer, and a second conductive-type semiconductor layer. The multilayer film has layers with different refractive indexes formed on at least one side of the substrate, in which first and second layers having refractive indexes of 1.2 or more and 2.5 or less, and 3.2 or more and 4.3 or less, respectively, in a wavelength range of 6 ?m to 10 ?m are alternately stacked. The optical filter includes a wavelength range having an average transmittance of 70% or more with a width of 50 nm or more in a wavelength range of 6 ?m to 10 ?m, and has a maximum transmittance of 10% or more in a wavelength range of 12.5 ?m to 20 ?m.

Abstract: Provided is an AD converter, including: an analog signal input circuit, configured to be input with an analog input signal, and output a first analog output signal based on the analog input signal and a second analog output signal based on the analog input signal at different timing; an integral circuit, configured to integrate the first analog output signal and the second analog output signal and output the first integral signal and the second integral signal; a predictive circuit, configured to predict an integral signal output after the output by the integral circuit based on the first integral signal and the second integral signal output by the integral circuit, and output a predictive integral signal; and a quantization circuit, configured to generate a digital signal with the predictive integral signal quantized.

Abstract: A driving control apparatus, a device, an optical module, and a driving control method will be provided, the driving control apparatus including: an acquiring unit to acquire a detection signal depending on a detection result of sensing a position of a driving target object; a driving control unit to generate a driving signal to move the driving target object to a target position based on the detection signal; an oscillation detecting unit to detect oscillation in a signal at a predetermined object point on a signal path from the detection signal to the driving signal; and an oscillation suppressing unit to suppress oscillation of the signal path according to detection of the oscillation.

Abstract: Provided is an apparatus with a gas detection function capable of detecting a detection target gas with high accuracy. An apparatus with a gas detection function comprises: a housing (10); a vibration source (20); and a gas measurement unit (40) located inside the housing and demarcated by a partition, wherein the vibration source is located outside the gas measurement unit, the gas measurement unit includes a detector (41) located on a substrate (30), and a gas detection space (42) provided with a hole (43) through which a gas passes, and a frequency f expressed by the following Formula (1): f = c 2 ? ? ? S VL Formula ? ( 1 ) is 500 Hz or more, where V is a volume of the gas detection space, S is a cross-sectional area of the hole, L is an effective length of the hole, and c is a sound speed.

Abstract: Provided is an infrared detecting device with a high SNR. The infrared detecting device includes: a semiconductor substrate 10; a first layer 21 having a first conductivity type on the semiconductor substrate; a light receiving layer 22 on the first layer; and a second layer 23 having a second conductivity type on the light receiving layer. A part of the first layer, the light receiving layer, and the second layer form a mesa structure, the light receiving layer contains AlxIn1-xSb (0.05<x<0.18), and at least a part of side surfaces of the mesa structure are covered with a protective layer, and part of the protective layer that is in contact with side surfaces of the light receiving layer is made of silicon nitride.

Abstract: There is provided a power supply device configured to boost an input voltage to output an output voltage, the power supply device including: an oscillator circuit configured to receive the input voltage and to output an oscillation signal; a step-up circuit configured to output a boost voltage based on the oscillation signal; a first hysteresis comparator and a second hysteresis comparator configured to compare boost voltages with threshold values; a first switch that is connected between the oscillator circuit and the step-up circuit and that is controlled based on a comparison result of the first hysteresis comparator; and a second switch that is connected to an output terminal configured to output the output voltage and that is controlled based on a comparison result of the second hysteresis comparator.