公开(公告)号：US20240019296A1

公开(公告)日：2024-01-18

申请号：US17900419

申请日：2022-08-31

Applicant: Interdisciplinary Consulting Corporation

Inventor： David Alan Mills ,  William C. Patterson

IPC: G01J1/04 ,  G01J1/44 ,  G01J1/42

CPC classification number: G01J1/0437 ,  G01J1/44 ,  G01J1/4228 ,  G01J2001/4242

Abstract: A readout circuit for an amplitude modulating sensor includes a first and second wavelength light source; an optical coupler coupled to receive a first light signal from the first wavelength light source and a second light signal from the second wavelength light source; a frequency selector that allows for the first light signal to pass to the amplitude modulating sensor; and a detector system coupled to the optical coupler to receive the first light signal and the second light signal after the first light signal is modulated by the amplitude modulating sensor and independently detect the two signals. The detector system generates electronic signals representing the modulated first light signal and the second light signal and removes a common mode signal of the modulated first light signal and the second light signal, removing common mode noise or attenuation in the modulated first light signal.

公开(公告)号：US20190195834A1

公开(公告)日：2019-06-27

申请号：US16227950

申请日：2018-12-20

Applicant: Infineon Technologies AG

Inventor： Matthias EBERL ,  Franz JOST

IPC: G01N29/24 ,  G01J1/16 ,  G01N21/17 ,  G01J1/42

CPC classification number: G01N29/2425 ,  G01J1/1626 ,  G01J1/42 ,  G01J2001/4242 ,  G01N21/1702 ,  G01N2021/1704 ,  G01N2291/021

Abstract: An apparatus containing an optical emitter configured to emit optical radiation is provided. Further, the apparatus includes a first hermetically sealed measurement cell filled with a first gas. The first gas is configured to absorb the optical radiation at least partially at one or more predetermined wavelengths. Additionally, the apparatus includes a first microphone arranged in the measurement cell and configured to generate a first microphone signal on a basis of a photoacoustic excitation of the first gas by the optical radiation. The apparatus moreover includes an evaluation circuit configured to take the first microphone signal as a basis for generating a first measurement signal indicating an emission intensity of the optical emitter at the one or more predetermined wavelengths.

公开(公告)号：US10062254B1

公开(公告)日：2018-08-28

申请号：US15478142

申请日：2017-04-03

Applicant: Alexander Paul

Inventor： Alexander Paul

IPC: G08B13/18 ,  G08B13/184 ,  G01V8/14 ,  G01J1/44 ,  G01J1/02

CPC classification number: G08B13/184 ,  G01J1/0228 ,  G01J1/0411 ,  G01J1/0414 ,  G01J1/0422 ,  G01J1/0488 ,  G01J2001/4238 ,  G01J2001/4242 ,  G01V8/14 ,  H04B1/38

Abstract: Systems and methods for intrusion detection, including an intrusion detection device configured to send a light source to a retroreflector and receive reflected light from the retroreflector. An alarm is activated if the light source is not detected by the intrusion detection device. The intrusion detection device includes a computing device coupled to a preamplifier, a superregenerative receiver, and a digitizer.

公开(公告)号：US20180238734A1

公开(公告)日：2018-08-23

申请号：US15960507

申请日：2018-04-23

Applicant: Apple Inc.

Inventor： Steven P. Hotelling ,  Marcelo M. Lamego

IPC: G01J1/44 ,  A61B5/021 ,  A61B5/145 ,  A61B5/01 ,  A61B5/1455 ,  A61B5/024 ,  A61B5/11 ,  A61B5/00 ,  A61B5/08

CPC classification number: G01J1/44 ,  A61B5/02427 ,  A61B5/7225 ,  A61B5/7228 ,  G01J1/0228 ,  G01J1/18 ,  G01J2001/0257 ,  G01J2001/4242 ,  G01J2001/444

Abstract: An electronic device includes one or more light sources for emitting light toward a body part of a user and one or more optical sensors for capturing light samples while each light source is turned on and for capturing dark samples while the light source(s) are turned off. A signal produced by the one or more optical sensors is filtered and demodulated produce multiple demodulated signals each associated with a light source. Each signal associated with the light source(s) is analyzed to estimate or determine a physiological parameter of the user.

公开(公告)号：US20170336259A1

公开(公告)日：2017-11-23

申请号：US15597329

申请日：2017-05-17

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoichi KAWADA

IPC: G01J3/14 ,  G01N21/25 ,  G01J3/447

CPC classification number: G01J3/14 ,  G01J3/0224 ,  G01J3/28 ,  G01J3/42 ,  G01J3/447 ,  G01J2001/4242 ,  G01N21/255 ,  G01N21/3581 ,  G01N21/552

Abstract: A total reflection spectroscopic measurement device includes a terahertz wave generation unit, an internal total reflection prism, a detection unit configured to detect the terahertz wave, an electric field vector measurement unit configured to measure an electric field vector of the terahertz wave, and an analysis unit configured to acquire information about an optical constant of the object to be measured. Proportions of S polarization component and P polarization component of the terahertz wave are constant. The analysis unit acquires the information about the optical constant on the basis of a ratio between S polarization component and P polarization component of the measured electric field vector when the object is not arranged on the total reflection surface and a ratio between S polarization component and P polarization component of the measured electric field vector when the object is arranged on the total reflection surface.

公开(公告)号：US20170059397A1

公开(公告)日：2017-03-02

申请号：US14983489

申请日：2015-12-29

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Lin Yang ,  Hung-Ching Lai ,  Chi-Chih Shen

IPC: G01J1/04 ,  G01J1/02 ,  G01J1/42 ,  G06F3/03

CPC classification number: G01J1/0422 ,  G01J1/0204 ,  G01J1/42 ,  G01J2001/4242 ,  G06F3/0304 ,  G06F3/0317

Abstract: An optical detecting module includes a housing, a light emitting component, an optical detecting component and an optical signal collecting component. The light emitting component is disposed inside the housing. The optical detecting component is disposed inside the housing to receive an optical detecting signal generated by the light emitting component. The optical signal collecting component is utilized to hold the light emitting component for signal collection. The optical signal collecting component includes an output portion, a bottom portion and at least one lateral portion. The light emitting component is disposed on the bottom portion, and an optical positive signal of the optical detecting signal is projected out of the housing through the output portion. The lateral portion is bent from the bottom portion to reflect an optical lateral signal of the optical detecting signal, and the optical lateral signal is projected out of the housing through the output portion.

Abstract translation: 光学检测模块包括壳体，发光部件，光学检测部件和光学信号收集部件。 发光部件设置在壳体内。 光学检测部件设置在壳体内部，以接收由发光部件产生的光检测信号。 光信号采集部件用于保持用于信号收集的发光部件。 光信号采集部件包括输出部分，底部部分和至少一个侧向部分。 发光部件设置在底部，光检测信号的光正信号通过输出部分从外壳突出。 横向部分从底部弯曲以反射光学检测信号的光学横向信号，并且光学横向信号通过输出部分从壳体中突出出来。

公开(公告)号：US20160328936A1

公开(公告)日：2016-11-10

申请号：US15148072

申请日：2016-05-06

Applicant: Siemens Schweiz AG

Inventor： Martin Fischer

IPC: G08B17/107 ,  G01J1/42 ,  G01N21/53

CPC classification number: G08B17/107 ,  G01J1/42 ,  G01J2001/4242 ,  G01N21/53 ,  G01N2201/125 ,  G08B29/145

Abstract: An open scattered light smoke detector for detecting smoke may include a light transmitter for emitting light, a light receiver spectrally matched to the light transmitter, and a control unit configured to repeatedly actuate the light transmitter, with a pulsed signal sequence, to emit corresponding light pulses, evaluate temporally a signal sequence received by the light receiver, and output a fire alarm if a received signal strength exceeds a minimum value for the smoke concentration. The control unit may be configured to switch the detector from a normal operating mode into a service mode if a phase angle between an emitted and received signal sequence, as determined on the detector side, increases by a minimum angular value which, in terms of the travel time, corresponds technically to an increase in the optical path length from the light transmitter to the light receiver of more than some predefined distance.

Abstract translation: 一种用于检测烟雾的开放式散烟检测器可以包括用于发射光的光发射器，与光发射器频谱匹配的光接收器，以及配置成用脉冲信号序列反复致动光发送器的控制单元，以发射相应的光 脉冲，暂时评估由光接收器接收的信号序列，并且如果接收信号强度超过烟浓度的最小值，则输出火警。 如果在检测器侧确定的发射和接收信号序列之间的相位角增加最小角度值，则控制单元可以被配置为将检测器从正常操作模式切换到服务模式，根据 行进时间在技术上对应于从光发射器到光接收器的光路长度的增加大于预定距离。

公开(公告)号：US20160146666A1

公开(公告)日：2016-05-26

申请号：US14950617

申请日：2015-11-24

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoichi KAWADA ,  Takashi YASUDA ,  Hironori TAKAHASHI

IPC: G01J1/44 ,  G01J1/42 ,  G01J1/04 ,  G01J4/04

CPC classification number: G01J1/44 ,  G01J1/0429 ,  G01J1/4228 ,  G01J3/0224 ,  G01J3/0262 ,  G01J3/42 ,  G01J3/433 ,  G01J3/4338 ,  G01J4/04 ,  G01J2001/4242 ,  G01N21/3581 ,  G01R15/241 ,  G01R29/0871

Abstract: In this electric field vector detection method, an electro-optic crystal, where a (111) surface of an optical isotropic medium is cut out, is used as a terahertz wave detection element. The method includes: causing polarization of probe light of ultrashort pulsed light to be circular polarization; allowing the probe light having circular polarization to enter the terahertz wave detection element and probing the terahertz wave; modulating the probe light, having probed the terahertz wave, by a rotating analyzer and detecting the modulated probe light by a photodetector; performing lock-in detection of a detection signal from the photodetector by a lock-in detector using a frequency based on a rotational frequency of the rotating analyzer as a reference signal; and detecting an electric field vector of the terahertz wave based on a detection signal from the lock-in detector.

Abstract translation: 在该电场矢量检测方法中，将光学各向同性介质的（111）面切出的电光晶体用作太赫兹波检测元件。 该方法包括：使超短脉冲光的探测光的极化成圆极化; 允许具有圆极化的探测光进入太赫兹波检测元件并探测太赫兹波; 通过旋转分析仪调制探测太赫兹波的探测器，并通过光电检测器检测调制的探测光; 通过锁定检测器使用基于旋转分析仪的旋转频率的频率作为参考信号来执行来自光电检测器的检测信号的锁定检测; 以及基于来自锁定检测器的检测信号检测太赫兹波的电场矢量。

公开(公告)号：US08829414B2

公开(公告)日：2014-09-09

申请号：US14010244

申请日：2013-08-26

Applicant: Apple Inc.

Inventor： Anthony M. Fadell ,  Achim Pantfoerder

IPC: G01J1/44 ,  H04W52/02 ,  G06F3/0488 ,  G06F3/038 ,  G06F1/32 ,  H04M1/725 ,  G06F3/0346 ,  G06F3/0485 ,  H04M1/02 ,  G01J1/42 ,  H04M1/22

CPC classification number: G01J1/4204 ,  G01J1/4228 ,  G01J1/44 ,  G01J2001/4242 ,  G06F1/3203 ,  G06F1/3231 ,  G06F3/0346 ,  G06F3/0383 ,  G06F3/0485 ,  G06F3/04883 ,  G06F2203/04808 ,  H04M1/0214 ,  H04M1/0245 ,  H04M1/22 ,  H04M1/72569 ,  H04M1/72572 ,  H04M2250/12 ,  H04W52/027 ,  Y02D10/173 ,  Y02D70/00

Abstract: Apparatuses and methods to sense proximity and to detect light. In one embodiment, an apparatus includes an emitter of electromagnetic radiation and a detector of electromagnetic radiation; the detector has a sensor to detect electromagnetic radiation from the emitter when sensing proximity, and to detect electromagnetic radiation from a source other than the emitter when sensing visible light. The emitter may be disabled at least temporarily to allow the detector to detect electromagnetic radiation from a source other than the emitter, such as ambient light. In one implementation, the ambient light is measured by measuring infrared wavelengths. Also a fence having a non-IR transmissive material disposed between the emitter and the detector to remove electromagnetic radiation emitted by the emitter. Other apparatuses and methods and data processing systems and machine readable media are also described.

Abstract translation: 感测接近和检测光的装置和方法。 在一个实施例中，一种装置包括电磁辐射发射器和电磁辐射检测器; 检测器具有传感器，用于在感测距离时检测来自发射器的电磁辐射，并且在感测可见光时检测来自发射器以外的源的电磁辐射。 可以至少暂时禁用发射器，以允许检测器检测来自除发射器之外的源的电磁辐射，例如环境光。 在一个实施方案中，通过测量红外波长来测量环境光。 还有一种围栏，其具有设置在发射器和检测器之间的非IR透射材料，以去除由发射器发射的电磁辐射。 还描述了其他装置和方法以及数据处理系统和机器可读介质。

公开(公告)号：US08699011B2

公开(公告)日：2014-04-15

申请号：US13696630

申请日：2011-05-10

Applicant: Henrik Hofvander ,  Bernard P Masterson ,  Andrew D Sappey ,  James Howell ,  David Owenby ,  Lee Sutherland ,  Michael J Estes

Inventor： Henrik Hofvander ,  Bernard P Masterson ,  Andrew D Sappey ,  James Howell ,  David Owenby ,  Lee Sutherland ,  Michael J Estes

IPC: G01N21/90 ,  G01N21/00

CPC classification number: G01J5/0014 ,  G01J3/4338 ,  G01J5/601 ,  G01J2001/4242 ,  G01L23/16 ,  G01N21/39 ,  G01N2021/399

Abstract: A method of absorption spectroscopy to determine a rapidly variable gas parameter. The method includes transmitting light from a synchronization light source to a synchronization detector. The transmitted light is periodically interrupted by a moving mechanical part between the synchronization light source and synchronization detector. The output from the synchronization detector is used to generate a repeating time signal having variable phase delay. This signal is used to control the timing of laser spectroscopy wavelength scans. Multiple spectroscopic scans may be repeated at multiple selected time signal phase delay and the results averaged for each phase. Apparatus for implementing the above methods are also disclosed.

Abstract translation: 用于确定快速变化的气体参数的吸收光谱法的方法。 该方法包括将光从同步光源传输到同步检测器。 透射光被同步光源和同步检测器之间的移动机械部分周期性地中断。 来自同步检测器的输出用于产生具有可变相位延迟的重复时间信号。 该信号用于控制激光光谱波长扫描的时序。 可以在多个选定的时间信号相位延迟下重复多个光谱扫描，并且每个相位的平均结果。 还公开了用于实现上述方法的装置。