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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US2020132817A1
OPTICAL DISTANCE MEASUREMENT APPARATUS
Publication/Patent Number: US2020132817A1 Publication Date: 2020-04-30 Application Number: 16/720,553 Filing Date: 2019-12-19 Inventor: Ueno, Akifumi   Hata, Takehiro   Kashiwada, Shinji   Assignee: DENSO CORPORATION   IPC: G01S7/4861 Abstract: An optical distance measurement apparatus according to an aspect of the disclosure includes an irradiator, a plurality of SPADs, a plurality of signal output units, a response number detector, a timing identifier, and a timing corrector. The response number detector detects a response number representing the number of responding one of the SPADs based on a pulse signal. The timing identifier identifies a temporary timing based on a state of variation in the response number along a time series and identifies a detection timing representing a timing when the optical distance measurement apparatus detects light in accordance with the temporary timing. The timing corrector acquires a correction time representing a time difference between the temporary timing and a true timing corresponding to a distance to an object and sets a timing corrected from the temporary timing by the correction time as the detection timing. An optical distance measurement apparatus according to an aspect of the disclosure includes an irradiator, a plurality of SPADs, a plurality of signal output units, a response number detector, a timing identifier, and a timing corrector. The response number detector detects a ...More Less
2 US10612973B2
Light detection device
Publication/Patent Number: US10612973B2 Publication Date: 2020-04-07 Application Number: 16/013,047 Filing Date: 2018-06-20 Inventor: Hata, Takehiro   Kashiwada, Shinji   Ueno, Akifumi   Assignee: DENSO CORPORATION   IPC: H03K5/1534 Abstract: A light detection device has light receiving parts, edge detection circuits and an addition unit. Each light receiving part has a quench resistance, a SPAD and a pulse signal output part. The SPAD responses incident photons, i.e. incident light. The quench resistance and pulse signal output part generate and transmit a pulse signal to a corresponding edge detection circuit when the SPAD receives and responds to the incident light. The edge detection circuits and the addition unit detects the number of edges during a period from a previously received CLK signal to a currently received CLK signal every time it receives a CLK signal transmitted at a predetermined period. The edge represents a state change from a first state which receives no pulse signal to a second state which receives the pulse signal. A light detection device has light receiving parts, edge detection circuits and an addition unit. Each light receiving part has a quench resistance, a SPAD and a pulse signal output part. The SPAD responses incident photons, i.e. incident light. The quench resistance and pulse ...More Less
3 US2020018853A1
PHOTODETECTOR
Publication/Patent Number: US2020018853A1 Publication Date: 2020-01-16 Application Number: 16/584,033 Filing Date: 2019-09-26 Inventor: Hata, Takehiro   Ozaki, Noriyuki   Kimura, Teiyu   Azuma, Kenta   Kashiwada, Shinji   Assignee: DENSO CORPORATION   IPC: G01S17/10 Abstract: A light reception array unit receives light irradiated from an irradiation unit and reflected from an object, and outputs in parallel a pulse signal respectively output from a plurality of light reception units. A timer unit measures an elapsed time since an input of an irradiation timing signal. A response acquisition unit acquires a number of responses, which is a number of the light reception units outputting the pulse signal, at each fixed cycle timing, and outputs an adjusted number of responses obtained by subtracting a bias value from the number of responses or dividing the number of responses by the bias value. An address of a memory is associated with a timer value measured by the timer unit. A histogram generation unit integrates and stores, in a memory address specified from a timer value, the adjusted number of responses as data at that address. A light reception array unit receives light irradiated from an irradiation unit and reflected from an object, and outputs in parallel a pulse signal respectively output from a plurality of light reception units. A timer unit measures an elapsed time since an input of an ...More Less
4 US2020018831A1
LIGHT DETECTOR
Publication/Patent Number: US2020018831A1 Publication Date: 2020-01-16 Application Number: 16/582,290 Filing Date: 2019-09-25 Inventor: Azuma, Kenta   Ozaki, Noriyuki   Kashiwada, Shinji   Kimura, Teiyu   Takai, Isamu   Matsubara, Hiroyuki   Assignee: DENSO CORPORATION   IPC: G01S7/486 Abstract: A light detector is provided to include a light receiving array having a plurality of light receivers respectively outputting pulse signals upon incidence of photons. A delay setting value is set which is used to adjust a time interval from when the pulse signals are output from the light receiving array to when a response number, which is a specified number of the light receivers outputting the pulse signals, is acquired. A light detector is provided to include a light receiving array having a plurality of light receivers respectively outputting pulse signals upon incidence of photons. A delay setting value is set which is used to adjust a time interval from when the pulse signals are output from ...More Less
5 US2020044098A1
LIGHT DETECTOR
Publication/Patent Number: US2020044098A1 Publication Date: 2020-02-06 Application Number: 16/583,674 Filing Date: 2019-09-26 Inventor: Azuma, Kenta   Kimura, Teiyu   Ozaki, Noriyuki   Kashiwada, Shinji   Hata, Takehiro   Takai, Isamu   Matsubara, Hiroyuki   Assignee: DENSO CORPORATION   IPC: H01L31/02 Abstract: A light detector is provided to include a detection module, and a monitoring SPAD. The detection module includes an SPAD that is an avalanche photodiode operable in Geiger mode; the detection module is configured to perform light detection by applying, to the SPAD, a reverse bias voltage in a reverse direction. The monitoring SPAD has characteristics identical to characteristics of the SPAD in the detection module. The reverse bias voltage is generated to be applied to the SPAD in the detection module based on (i) a reference breakdown voltage set from a breakdown voltage generated across the monitoring SPAD in Geiger mode and (ii) a predetermined excess voltage. A light detector is provided to include a detection module, and a monitoring SPAD. The detection module includes an SPAD that is an avalanche photodiode operable in Geiger mode; the detection module is configured to perform light detection by applying, to the SPAD, a reverse ...More Less
6 US2020044109A1
PHOTODETECTOR
Publication/Patent Number: US2020044109A1 Publication Date: 2020-02-06 Application Number: 16/598,295 Filing Date: 2019-10-10 Inventor: Azuma, Kenta   Ozaki, Noriyuki   Kashiwada, Shinji   Kimura, Teiyu   Takai, Isamu   Matsubara, Hiroyuki   Ohta, Mitsuhiko   Hiratsuka, Shigeyoshi   Assignee: DENSO CORPORATION   KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO   IPC: H01L31/107 Abstract: A photodetector includes: a photoreceptor provided with a SPAD that is configured to respond to incidence of a photon, and as the response of the SPAD, configured to output a pulse signal; and a pulse rate control circuit configured to control sensitivity of the photoreceptor to have a pulse rate as the number of pulse signals outputted per unit time from the photoreceptor to be a set value set in advance, (i) in a set range including the set value, (ii) in a set range of the set value or more, or (iii) in a set range of the set value or less. A photodetector includes: a photoreceptor provided with a SPAD that is configured to respond to incidence of a photon, and as the response of the SPAD, configured to output a pulse signal; and a pulse rate control circuit configured to control sensitivity of the photoreceptor to ...More Less
7 US2020018832A1
PHOTODETECTOR AND DISTANCE MEASUREMENT APPARATUS
Publication/Patent Number: US2020018832A1 Publication Date: 2020-01-16 Application Number: 16/584,093 Filing Date: 2019-09-26 Inventor: Azuma, Kenta   Ozaki, Noriyuki   Kashiwada, Shinji   Kimura, Teiyu   Takai, Isamu   Matsubara, Hiroyuki   Ohta, Mitsuhiko   Hiratsuka, Shigeyoshi   Assignee: DENSO CORPORATION   IPC: G01S7/486 Abstract: A photodetector includes plural detectors. Each of the plural detectors has a single photon avalanche diode (hereinafter referred to as SPAD) which responds to incidence of a photon. The plural detectors include at least a first detector and a second detector. The SPAD has a recovery time period until the SPAD reaches a next photon-responsive state, in response to the SPAD responding to the incidence of the photon. The recovery time period of the SPAD in the first detector is different from the recovery time period of the SPAD in the second detector. A photodetector includes plural detectors. Each of the plural detectors has a single photon avalanche diode (hereinafter referred to as SPAD) which responds to incidence of a photon. The plural detectors include at least a first detector and a second detector. The SPAD has a ...More Less
8 US10156720B2
Information display apparatus
Publication/Patent Number: US10156720B2 Publication Date: 2018-12-18 Application Number: 14/910,279 Filing Date: 2014-07-24 Inventor: Ando, Hiroshi   Kashiwada, Shinji   Assignee: DENSO CORPORATION   IPC: G02B27/01 Abstract: An information display apparatus reflects light representing information off a projection target to display the information as a virtual image, and includes a projector, at least two image forming devices and a focus adjusting device. The projector projects the light representing information. The image forming devices, to which the light from the projector is projected, are on an optical path from the projector to the projection target. At least one of the image forming devices is at a distance from the projector different from that of other image forming devices. The focus adjusting device adjusts a focal length of one optical system on an optical path from the projector to each of the image forming devices such that the light from the projector is in focus at each of the image forming devices. An image of information on each of the image forming devices is reflected off the projection target. An information display apparatus reflects light representing information off a projection target to display the information as a virtual image, and includes a projector, at least two image forming devices and a focus adjusting device. The projector projects the light ...More Less
9 US2018372538A1
LIGHT DETECTION DEVICE
Publication/Patent Number: US2018372538A1 Publication Date: 2018-12-27 Application Number: 16/013,047 Filing Date: 2018-06-20 Inventor: Hata, Takehiro   Kashiwada, Shinji   Ueno, Akifumi   Assignee: DENSO CORPORATION   IPC: G01J1/44 Abstract: A light detection device has light receiving parts, edge detection circuits and an addition unit. Each light receiving part has a quench resistance, a SPAD and a pulse signal output part. The SPAD responses incident photons, i.e. incident light. The quench resistance and pulse signal output part generate and transmit a pulse signal to a corresponding edge detection circuit when the SPAD receives and responds to the incident light. The edge detection circuits and the addition unit detects the number of edges during a period from a previously received CLK signal to a currently received CLK signal every time it receives a CLK signal transmitted at a predetermined period. The edge represents a state change from a first state which receives no pulse signal to a second state which receives the pulse signal. A light detection device has light receiving parts, edge detection circuits and an addition unit. Each light receiving part has a quench resistance, a SPAD and a pulse signal output part. The SPAD responses incident photons, i.e. incident light. The quench resistance and pulse ...More Less
10 JP6149506B2
RADAR DEVICE
Publication/Patent Number: JP6149506B2 Publication Date: 2017-06-21 Application Number: 2013106210 Filing Date: 2013-05-20 Inventor: Hoashi, Yoshiaki   Fujisawa, Takayoshi   Kashiwada, Shinji   Assignee: DENSO CORP   IPC: G01S7/497 Abstract: PROBLEM TO BE SOLVED: To provide a radar device capable of reducing the effect of an internal reflection wave (clutter) in an analog processing manner.SOLUTION: In a radar device 1
11 US2016178902A1
INFORMATION DISPLAY APPARATUS
Publication/Patent Number: US2016178902A1 Publication Date: 2016-06-23 Application Number: 14/910,279 Filing Date: 2014-07-24 Inventor: Ando, Hiroshi   Kashiwada, Shinji   Assignee: DENSO CORPORATION   IPC: G02B27/01 Abstract: An information display apparatus reflects light representing information off a projection target to display the information as a virtual image, and includes a projector, at least two image forming devices and a focus adjusting device. The projector projects the light representing information. The image forming devices, to which the light from the projector is projected, are on an optical path from the projector to the projection target. At least one of the image forming devices is at a distance from the projector different from that of other image forming devices. The focus adjusting device adjusts a focal length of one optical system on an optical path from the projector to each of the image forming devices such that the light from the projector is in focus at each of the image forming devices. An image of information on each of the image forming devices is reflected off the projection target. An information display apparatus reflects light representing information off a projection target to display the information as a virtual image, and includes a projector, at least two image forming devices and a focus adjusting device. The projector projects the light ...More Less
12 DE112014003685T5
Informationsanzeigevorrichtung
Title (English): Information display device
Publication/Patent Number: DE112014003685T5 Publication Date: 2016-05-12 Application Number: 112014003685 Filing Date: 2014-07-24 Inventor: Ando, Hiroshi   Kashiwada, Shinji   Assignee: Denso Corporation   IPC: B60K35/00 Abstract: Eine Informationsanzeigevorrichtung reflektiert Licht
13 JP6015367B2
RADAR DEVICE
Publication/Patent Number: JP6015367B2 Publication Date: 2016-10-26 Application Number: 2012247478 Filing Date: 2012-11-09 Inventor: Hoashi, Yoshiaki   Fujisawa, Takayoshi   Kashiwada, Shinji   Assignee: DENSO CORP   IPC: G01S7/481 Abstract: PROBLEM TO BE SOLVED: To reduce a noise caused by unnecessary reflected light
14 JP2016200483A
WIRELESS MEASURING SYSTEM OF RESONANT ELEMENT
Publication/Patent Number: JP2016200483A Publication Date: 2016-12-01 Application Number: 2015080481 Filing Date: 2015-04-10 Inventor: Tanaka, Shuji   Shibata, Takayuki   Takizawa, Yoshinori   Kashiwada, Shinji   Assignee: DENSO CORP   TOHOKU UNIV   IPC: G01R27/26 Abstract: PROBLEM TO BE SOLVED: To provide a wireless measuring system of a resonant element capable of being manufactured at a relatively low cost and easily
15 DE102004012859B4
Anzeigevorrichtung zur Änderung einer Anzeigeposition auf der Grundlage einer äusseren Umgebung
Title (English): A display device that changes the display position according to the outdoor environment
Publication/Patent Number: DE102004012859B4 Publication Date: 2016-06-16 Application Number: 102004012859 Filing Date: 2004-03-16 Inventor: Ando, Hiroshi   Nakamura, Koji   Fujikawa, Takayuki   Kashiwada, Shinji   Kakizaki, Masaru   Assignee: Denso Corporation   IPC: B60R1/00 Abstract: Anzeigevorrichtung
16 US2016025580A1
PRESSURE SENSOR
Publication/Patent Number: US2016025580A1 Publication Date: 2016-01-28 Application Number: 14/770,207 Filing Date: 2014-02-04 Inventor: Ooya, Kouji   Kano, Kazuhiko   Teshigahara, Akihiko   Kashiwada, Shinji   Shibata, Takayuki   Toyoda, Inao   Assignee: DENSO CORPORATION   IPC: G01L9/00 Abstract: An antenna unit having an antenna coil pattern is disposed in a casing. A sensor unit has a surface acoustic wave detecting element including a first sensing electrode that generates and receives a surface acoustic wave and a first reflector that reflects the surface acoustic wave, which are provided on a substrate configured of a piezoelectric material, and a sensor coil pattern electrically connected to the first sensing electrode and coupled to the antenna coil pattern. The sensor unit is disposed in a pressure receiving portion, and a signal is transmitted between the sensor unit and the antenna unit by wireless communication resulting from a coil coupling. An antenna unit having an antenna coil pattern is disposed in a casing. A sensor unit has a surface acoustic wave detecting element including a first sensing electrode that generates and receives a surface acoustic wave and a first reflector that reflects the surface acoustic ...More Less
17 JP5915446B2
OPTICAL SCANNER
Publication/Patent Number: JP5915446B2 Publication Date: 2016-05-11 Application Number: 2012178262 Filing Date: 2012-08-10 Inventor: Wado, Hiroyuki   Nishikawa, Hideaki   Oyama, Koichi   Fujisawa, Takayoshi   Kashiwada, Shinji   Tsuge, Akio   Assignee: DENSO CORP   IPC: B81B3/00 Abstract: PROBLEM TO BE SOLVED: To suppress a change in scanning characteristics due to temperature change in an optical scanner using torsional vibration.SOLUTION: The optical scanner includes a mirror 31 having a reflection surface for reflecting the rays of light and an elastic connection parts 16a and 16b as a rotational axis k for making the mirror 31 generate torsional vibration PROBLEM TO BE SOLVED: To suppress a change in scanning characteristics due to temperature change in an optical scanner using torsional vibration.SOLUTION: The optical scanner includes a mirror 31 having a reflection surface for reflecting the rays of light and an elastic ...More Less
18 JP6024269B2
OPTICAL SCANNER
Publication/Patent Number: JP6024269B2 Publication Date: 2016-11-16 Application Number: 2012175076 Filing Date: 2012-08-07 Inventor: Wado, Hiroyuki   Takeuchi, Yukihiro   Nishikawa, Hideaki   Oyama, Koichi   Fujisawa, Takayoshi   Kashiwada, Shinji   Tsuge, Akio   Assignee: DENSO CORP   IPC: G02B26/08 Abstract: PROBLEM TO BE SOLVED: To autonomously suppress a change in scanning characteristics due to temperature change in an optical scanner using torsional oscillation.SOLUTION: The optical scanner includes: a light reflection part 13 having a reflection surface for reflecting optical beam; and elastic connecting parts 16a and 16b that serve as rotating shafts for torsionally oscillating the light reflection part 13. The optical scanner that oscillates the light reflection part 13 about the rotating shafts to scan the optical beam reflected by the reflection surface includes a thermal actuator mechanism. The thermal actuator mechanism is configured integrally with PROBLEM TO BE SOLVED: To autonomously suppress a change in scanning characteristics due to temperature change in an optical scanner using torsional oscillation.SOLUTION: The optical scanner includes: a light reflection part 13 having a reflection surface for reflecting optical ...More Less
19 JP5983493B2
PRESSURE SENSOR
Publication/Patent Number: JP5983493B2 Publication Date: 2016-08-31 Application Number: 2013064489 Filing Date: 2013-03-26 Inventor: Shibata, Takayuki   Kano, Kazuhiko   Teshigawara, Akihiko   Toyoda, Ineo   Oya, Koji   Kashiwada, Shinji   Assignee: DENSO CORP   IPC: G01L9/00 Abstract: PROBLEM TO BE SOLVED: To provide a pressure sensor capable of simplifying a structure under a high temperature environment.SOLUTION: In a casing 1
20 WO2015019567A1
INFORMATION DISPLAY DEVICE
Publication/Patent Number: WO2015019567A1 Publication Date: 2015-02-12 Application Number: 2014003903 Filing Date: 2014-07-24 Inventor: Ando, Hiroshi   Kashiwada, Shinji   Assignee: Denso Corporation   IPC: B60K35/00 Abstract: Provided is an information display device in which light that represents information is reflected by a subject-of-projection member (6)