-
公开(公告)号：US20210373350A1
公开(公告)日：2021-12-02
申请号：US17319230
申请日：2021-05-13
Applicant: DENSO CORPORATION
Inventor： Toshihiro ODA , Yuki KAMATA , Koichi OYAMA
Abstract: A beam deflection system includes 2M laser light sources configured to emit laser lights, each laser light source being configured to switch two different center wavelengths to each other. The 2M laser light sources are divided into two sets of M types. The laser lights emitted from the two sets of M types of laser light sources are combined and input to a beam deflector. When (i) N is defined as an integer satisfying an expression of “1≤N≤M”, and (ii) center wavelengths of Nth laser light sources of the two sets of M laser light sources are defined as λN and λM+N, an expression of “λ1
-
公开(公告)号：US20160054562A1
公开(公告)日：2016-02-25
申请号：US14831996
申请日：2015-08-21
Applicant: DENSO CORPORATION
Inventor： Yusuke KAWAI , Kenichi SAKAI , Koichi OYAMA , Hideaki NISHIKAWA
CPC classification number: G02B26/0825 , B81B3/00 , G02B26/0858
Abstract: An optical scanner includes a substrate having a rigid body and a beam, and a layered body having multiple layers, including a lower conductive layer, a interlayer insulation film and an upper conductive layer, the layered body layered on and protruding outward from the rigid body and the beam. The layered body is patterned to form a resonance scanner portion and a vari-focal mirror, the resonance scanner portion (i) made as a part of the layered body and (ii) having an actuator part, and the vari-focal mirror made as a part of the layered body. The layered body including the resonance scanner portion and the vari-focal mirror is patterned to form a mirror driving wire. In such structure, the size of the optical scanner is reduced, and a frequency change of the resonance scanner portion due to the voltage application to the mirror driving wire is suppressed.
Abstract translation: 一种光学扫描仪包括具有刚体和光束的基板，以及具有多层的层叠体，包括下导电层，层间绝缘膜和上导电层，所述层叠体层叠在刚体上并向外突出 和梁。 将层叠体图案化以形成共振扫描仪部分和变焦镜，将谐振扫描器部分（i）制成为层状体的一部分，以及（ii）具有致动器部分，并且可变焦镜形成为 分层体的一部分。 将包括谐振扫描器部分和变焦镜的层状体图案化以形成镜驱动线。 在这种结构中，减少了光学扫描器的尺寸，并且抑制了由于施加到反射镜驱动线的电压引起的谐振扫描器部分的频率变化。
-
公开(公告)号：US20200088876A1
公开(公告)日：2020-03-19
申请号：US16690370
申请日：2019-11-21
Applicant: DENSO CORPORATION
Inventor： Tomoki TANEMURA , Koichi OYAMA , Taku SUZUKI , Daisuke INOUE
Abstract: A distance measurement sensor that detects a distance to an object based on heterodyne detection using light generated from a light source and another light received by a light receiver, includes: a scanning unit which scans the light in a first direction; a diffusing lens which diffuses the light in a second direction; multiplexers which multiplex the light and the another light to provide optical signals, respectively; and a processor which detects the distance to the object based on the optical signals. The light receiver has light receiving antennas in the second direction. The multiplexers are connected to the light receiving antennas, respectively. The processor performs a parallel processing for detecting the distance to the object based on the optical signals with respect to the light receiving antennas individually.
-
公开(公告)号：US20190064509A1
公开(公告)日：2019-02-28
申请号：US16080038
申请日：2017-01-12
Applicant: DENSO CORPORATION
Inventor： Koichi OYAMA , Takashi KATSUMATA , Tetsuya ENOMOTO , Yumi MARUYAMA
Abstract: A variable focus mirror includes a base portion, a first piezoelectric element, a reflection surface portion, and a second piezoelectric element. The base portion has a plate shape with a recessed portion on a back surface. The first piezoelectric element is arranged on a front surface of the base portion where the recessed portion is arranged. The reflection surface portion is arranged on the first piezoelectric element. The reflection surface portion is arranged opposite to the base portion with respect to the first piezoelectric element. The second piezoelectric element is arranged on the front surface of the base portion. The second piezoelectric element covers the part of the base portion where the recessed portion is arranged and the part of the base portion outside the recessed portion. The second piezoelectric element is separated from the first piezoelectric element.
-
公开(公告)号：US20230327406A1
公开(公告)日：2023-10-12
申请号：US18193980
申请日：2023-03-31
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , MIRISE Technologies Corporation , QD LASER, Inc.
Inventor： Hitoshi YAMADA , Yuki KAMATA , Koichi OYAMA , Yutaka OHNISHI , Kenichi NISHI , Keizo TAKEMASA
CPC classification number: H01S5/3412 , C09K11/7492 , B82Y20/00
Abstract: In a semiconductor device, a quantum dot group includes a stack of plural quantum dot layers having different central wavelengths at which respective gains are maximum. A part of or all of the quantum dot layers are stacked so that the central wavelengths sequentially shifts along a stacking direction. The quantum dot group includes a longest wavelength layer group composed of some quantum dot layers including a longest wavelength layer having a longest central wavelength and at least one quantum dot layer stacked on the longest wavelength layer. The longest wavelength layer or the longest wavelength layer group has a larger gain at the central wavelength than the gain at the central wavelength of each of the other quantum dot layers.
-
Patent Agency Ranking
公开(公告)号：US20210305779A1
公开(公告)日：2021-09-30
申请号：US17210939
申请日：2021-03-24
Inventor： Yuki KAMATA , Koichi OYAMA , Hiroyuki TARUMI , Kiichi HAMAMOTO , Haisong JIANG
Abstract: A semiconductor light emitting element includes an optical waveguide having a first and second waveguide provided with a width that allows propagation of light in a second-order mode or higher and a multimode optical interference waveguide provided with a wider width than the first and second waveguide and arranged at a position therebetween. The semiconductor light emitting element further includes a first optical loss layer facing the first waveguide in an active-layer crossing direction for causing a loss of light that is propagating in the first waveguide in the second-order mode or higher and a second optical loss layer facing the second waveguide in an active-layer crossing direction for causing a loss of light that is propagating in the second waveguide in the second-order mode or higher, the active-layer crossing direction being orthogonal to a surface of an active layer.
-
公开(公告)号：US20180039074A1
公开(公告)日：2018-02-08
申请号：US15547218
申请日：2016-03-25
Applicant: DENSO CORPORATION
Inventor： Koichi OYAMA , Hideaki NISHIKAWA , Yusuke KAWAI , Kenichi SAKAI
IPC: G02B26/10 , H01L41/047 , G02B5/08 , G02B26/08 , G02B7/182
CPC classification number: G02B26/10 , B81B3/007 , B81B2201/042 , B81B2203/0109 , B81B2203/0154 , B81B2203/019 , G02B5/08 , G02B7/1821 , G02B26/0858 , G02B26/105 , H01L41/0471 , H01L41/0477 , H01L41/0946 , H02N2/10
Abstract: A reflector has a reflective surface on first and second directions. Each of torsion beams extends to each opposite side of the reflective surface in the first direction. Each of coupling portions is to each opposite side of the reflector in the first direction and includes a central portion with U-shape having two projection portions and a bottom portion joined to the torsion beam. The projection portions include first concave portions opposing across the torsion beam by being penetrated in thickness direction. Each first concave portion extends in the second direction from an opening to a side surface facing the torsion beam towards an opposite side surface up to a bottom. A distance between the bottoms of the first concave portions across the torsion beam is greater than a distance between the side surfaces each facing the torsion beam of the projection portions.
-
公开(公告)号：US20140320943A1
公开(公告)日：2014-10-30
申请号：US14258130
申请日：2014-04-22
Applicant: DENSO CORPORATION
Inventor： Koichi OYAMA , Hideaki NISHIKAWA , Akio TSUGE , Kenichi SAKAI , Hiroyuki WADO
IPC: G02B26/08
CPC classification number: G02B26/0858 , B81B3/0043 , B81B2201/042 , B81B2203/0154
Abstract: An optical scanning device has a reflecting portion and a supporting body for supporting the reflecting portion. The reflecting portion has a reflecting surface for reflecting light beam. A pair of outside beam members is arranged between the reflecting portion and the supporting body in a longitudinal direction of the device. The device also has a first driving portion, one end of which is connected to the supporting body, while the other end of which is connected to a driving point of the reflecting portion. When the first driving portion is inflected, the reflecting portion is oscillated in a twisting vibration manner at a first axis. The driving point of the reflecting portion is located at a position separated from the first axis.
Abstract translation: 光学扫描装置具有反射部分和用于支撑反射部分的支撑体。 反射部具有用于反射光束的反射面。 一对外梁构件沿着装置的纵向方向布置在反射部分和支撑体之间。 该装置还具有第一驱动部分，其一端连接到支撑体，而另一端连接到反射部分的驱动点。 当第一驱动部分弯曲时，反射部分以第一轴线的扭转振动方式摆动。 反射部的驱动点位于与第一轴分离的位置。
-
公开(公告)号：US20220317299A1
公开(公告)日：2022-10-06
申请号：US17695882
申请日：2022-03-16
Inventor： Taku SUZUKI , Masashige SATO , Koichi OYAMA , Yoshiki MATSUMOTO
Abstract: A distance measuring device includes: a modulated light output unit configured to output a modulated light; a transmitting scanner configured to emit an input light, which is one branched light of the modulated light, as an emitted light; a receiving scanner into which the emitted light reflected by a target object is incident as an incident light, the receiving scanner outputting the incident light as a reflected light; and a measuring unit configured to measure a distance to the target object by combining the reflected light and a reference light which is the other branched light of the modulated light. The modulated light output unit outputs at least two modulated lights having modulation frequencies different from each other by chirping the modulation frequencies to approach each other.
-
公开(公告)号：US20220158415A1
公开(公告)日：2022-05-19
申请号：US17501497
申请日：2021-10-14
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , MIRISE Technologies Corporation , QD LASER, Inc.
Inventor： Yuki KAMATA , Hiroyuki TARUMI , Koichi OYAMA , Keizo TAKEMASA , Kenichi NISHI , Yutaka ONISHI
Abstract: The semiconductor laser device includes: an activation layer having at least one first quantum dot layer and at least one second quantum dot layer having a longer emission wavelength than the first quantum dot layer. The gain spectrum of the active layer has the maximum values at the first wavelength and the second wavelength longer than the first wavelength corresponding to the emission wavelength of the first quantum dot layer and the emission wavelength of the second quantum dot layer, respectively. The maximum value of the gain spectrum at the first wavelength is defined as the first maximum value, and the maximum value of the gain spectrum at the second wavelength is defined as the second maximum value. The first maximum value is larger than the second maximum value.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.013 seconds)
