-
公开(公告)号：US11940564B2
公开(公告)日：2024-03-26
申请号：US17236359
申请日：2021-04-21
发明人： Yusuke Ito , Takayuki Yanagisawa , Hiroshi Aruga , Masaharu Imaki , Wataru Yoshiki , Shumpei Kameyama
CPC分类号： G01S7/4817 , G02B26/101
摘要： A laser radar device includes: a light source for outputting laser light; a scanner for causing the laser light to scan; a first optical system for receiving the laser light caused to scan by the scanner and incident on the first optical system and emitting the incident laser light in such a manner that a horizontal component of the incident laser light is different from a horizontal component of the laser light to be emitted; and a second optical system for receiving the laser light caused to scan by the scanner and incident on the second optical system and emitting the incident laser light in such a manner that an incident area of the incident laser light in the horizontal direction is the same as an incident area of the first optical system in the horizontal direction, and an emission area of the incident laser light is different from an emission area of the first optical system.
-
公开(公告)号：US11933903B2
公开(公告)日：2024-03-19
申请号：US16976401
申请日：2018-03-29
发明人： Shumpei Kameyama , Eisuke Haraguchi , Yutaka Kajiyama , Nobuki Kotake , Takayuki Yanagisawa , Toshiyuki Ando
摘要： An optical transmission unit (3) transmits an optical signal having a light intensity set as a Low level component of a pulse. An optical partial reflector (6) is provided on a path through which transmission light is transmitted from a circulator (5) to the atmosphere, and reflects the optical signal. A detection unit (11) performs coherent detection on reception light using, as local light, a signal in a Low level section in the optical signal reflected by the optical partial reflector (6).
-
公开(公告)号：US11327176B2
公开(公告)日：2022-05-10
申请号：US16756043
申请日：2017-12-27
IPC分类号： G01P3/36 , G01S17/58 , G01S7/4911 , G01S7/4912
摘要： A laser radar device includes: a primary light source configured to combine laser beams having different wavelengths to generate primary light; an optical splitter configured to split the primary light into transmission light and reference light; an optical modulator configured to modulate the transmission light to generate modulated transmission light; an optical transmitter/receiver system configured to emit the modulated transmission light into an external space and receive light scattered or diffused by a target; an optical combiner configured to combine the reference light and the received light to generate an optical beat signal; and a photodetector circuit configured to perform an optical-to-electrical signal conversion of the optical beat signal to generate a received signal; and a signal processing circuit configured to calculate a measurement value related to the target on the basis of the received signal.
-
公开(公告)号：US09337609B2
公开(公告)日：2016-05-10
申请号：US14390901
申请日：2013-04-25
CPC分类号： H01S3/11 , G02F1/3523 , G02F2001/3503 , H01S3/063 , H01S3/067 , H01S3/0805 , H01S3/09415 , H01S3/1061 , H01S3/113
摘要： Provided is a passively Q-switched element or the like, which enables mode selection without increasing the number of components in a resonator in a Q-switched pulse laser or the like that oscillates in a great number of high-order modes and which is also applicable to a waveguide type laser in which a mode cannot be controlled spatially. By combining a saturable absorber (2) with a transparent material (3) which is transparent to a laser oscillation wavelength or the like, a passively Q-switched element having a mode selection function and a passively Q-switched laser device in which a passively Q-switched element has a mode selection function, and a planar waveguide type passively Q-switched element and passively Q-switched laser device are provided.
摘要翻译： 提供一种无源Q开关元件等，其能够在不增加在大量高阶模式下振荡的Q开关脉冲激光器等中的谐振器中的分量的数量的情况下进行模式选择，并且也是 适用于其中空间不能控制模式的波导型激光器。 通过将可饱和吸收体（2）与对激光振荡波长等透明的透明材料（3）组合，具有模式选择功能的无源Q开关元件和被动Q开关激光装置，其中被动地 Q开关元件具有模式选择功能，并且提供平面波导型无源Q开关元件和被动Q开关激光器件。
-
公开(公告)号：US11248902B2
公开(公告)日：2022-02-15
申请号：US17089071
申请日：2020-11-04
IPC分类号： G01B9/02 , G01B11/02 , G01B9/02017 , G01B9/02002 , G01B9/02004
摘要： An optical distance measurement device includes: a photodetector including PDs for receiving interference light output from an optical interference unit and outputting detection signals of the interference light; and a switch for selecting one of the detection signals output from the PDs, in which a distance calculation unit calculates a distance to a measurement object on the basis of the detection signal selected by the switch.
-
公开(公告)号：US10985521B2
公开(公告)日：2021-04-20
申请号：US16319758
申请日：2016-08-17
摘要： A problem with a conventional waveguide type laser device is that in the case in which an isotropic laser medium is used for a core, linearly polarized light is not provided. A ridge waveguide laser device of the present disclosure includes: a substrate; a core joined to the substrate and having a laser medium, the core having a refractive index higher than that of the substrate; and a cladding joined to the core, constituting a ridge waveguide together with the core, and made from a birefringent material having ordinary and extraordinary refractive indices lower than the refractive index of the core, the ordinary and extraordinary refractive indices being different.
-
公开(公告)号：US09923332B2
公开(公告)日：2018-03-20
申请号：US15526631
申请日：2016-01-08
CPC分类号： H01S3/1307 , G02F1/37 , G02F1/377 , H01S3/0405 , H01S3/042 , H01S3/0632 , H01S3/08072 , H01S3/08077 , H01S3/094049 , H01S3/0941 , H01S3/10053 , H01S3/109 , H01S3/23 , H01S3/2383 , H01S3/2391 , H01S5/4062
摘要： A device includes: at least one laser element with light emitting points to output fundamental waves in a one-dimensional array; a wavelength converting element to carry out wavelength conversion of the incident fundamental waves, and to output wavelength converted light rays; and an output mirror to reflect the fundamental waves, and to transmit the wavelength converted light rays resulting from the wavelength conversion by the wavelength converting element. The wavelength converting element is disposed between the laser element and the output mirror, and the distance between the position of a waist of the fundamental waves output from the laser element and the output mirror is set in accordance with a Talbot condition under which the adjacent light emitting points cause phase synchronization with each other.
-
公开(公告)号：US20150188281A1
公开(公告)日：2015-07-02
申请号：US14412360
申请日：2012-11-26
CPC分类号： H01S3/08086 , G02F1/3534 , G02F1/37 , G02F1/377 , H01S3/0621 , H01S3/0632 , H01S3/08054 , H01S3/0809 , H01S3/09415 , H01S3/10061 , H01S3/109 , H01S3/1653
摘要： Because a laser device is constructed in such a way that the laser device includes a solid-state laser element 3 that has gains for plural different wavelengths in plural different axial directions, and an optical element that has a characteristic of making an optical loss increase with increase in light intensity for each of light beams with the wavelengths, and the solid-state laser element 3 and the optical element are constructed in such a way as to be included in a resonator for fundamental waves which are generated by the solid-state laser element 3, and the laser device oscillates at two or more wavelengths, outputted light beams with the plural different wavelengths can be acquired by using the single solid-state laser element 3. As a result, a small, cheap, and easy to produce laser device can be acquired.
摘要翻译： 因为激光装置是这样构成的，即激光装置包括固体激光元件3，该固体激光元件3在多个不同的轴向上具有多个不同波长的增益，以及具有使光学损耗增加的特性的光学元件随着 增加具有波长的每个光束的光强度，并且固态激光元件3和光学元件被构造成包括在由固态激光器产生的基波的谐振器中 元件3，并且激光器件以两个或更多个波长振荡，可以通过使用单个固态激光器元件3获得具有多个不同波长的输出光束。结果是，小而便宜且容易产生激光 设备可以被采集。
-
公开(公告)号：US11965985B2
公开(公告)日：2024-04-23
申请号：US17039076
申请日：2020-09-30
摘要： A laser radar device includes a first signal sequence converting unit that converts a transmission signal generated by a transmission signal generating unit into a first pulse signal sequence; a second signal sequence converting unit that converts a reception signal outputted from a reflected light receiving unit into a second pulse signal sequence; and a range calculating unit that calculates a range to a ranging target from a time difference between a time at which transmission light is irradiated by a light irradiating unit and a time at which reflected light is received by the reflected light receiving unit, and an acceptance or refusal selecting unit calculates a degree of match between the first pulse signal sequence and the second pulse signal sequence, and selects or discards the range calculated by the range calculating unit on the basis of the degree of match.
-
公开(公告)号：US10422951B2
公开(公告)日：2019-09-24
申请号：US16302032
申请日：2016-06-14
摘要： Disclosed is a planar waveguide including: a core (11) which is a flat plate through which light propagates; a cladding (12) which is a flat plate for reflecting the light in a state of being joined to an upper surface of the core (11); and a cladding (13) which is a flat plate for reflecting the light in a state of being joined to a lower surface of the core (11), in which each of the claddings (12) and (13) is a multilayer film in which multiple films made from different materials are layered. As a result, a material having a low index of refraction can be used as the material of the core (11), and the limit on materials usable as the material of the core (11) is relaxed.
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.021 秒)
