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    Optical distance measuring apparatus
    1.
    发明授权
    Optical distance measuring apparatus 失效
    光学距离测量装置

    公开(公告)号：US5239353A

    公开(公告)日：1993-08-24

    申请号：US846817

    申请日：1992-03-06

    申请人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    发明人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    IPC分类号： G01S7/48 ,  G01S17/36

    CPC分类号： G01S17/36

    摘要： A two-eyed type optical distance measuring apparatus operable in accordance with a phase difference detecting process to optically measure a distance between the apparatus and an object to be measured is disclosed. To determine the distance between the apparatus and the object to be measured, a phase difference between the phase of a reflected light beam reflected from the object to be measured and the optical phase of a reference light beam derived from partial division of a distance measuring light beam emitted from a light source is detected and calculated. The apparatus includes as essential components a light source disposed in a housing on the light emitting side to emit a modulated distance measuring light beam therefrom toward the object to be measured, a light receiving element positioned in a housing on the light receiving side and a reference light introducing mechanism for introducing a part of the modulated distance measuring light beam emitted from the light source into the light receiving element via an optical fiber. To prepare the reference light beam, a shade is arranged at the intermediate part of the housing on the light emitting side. In addition, an iris mechanism is disposed on the incident side of the optical fiber to variably adjust an optical quantity of the reference light beam.

    Optical distance measuring apparatus
    2.
    发明授权
    Optical distance measuring apparatus 失效
    光学测距仪

    公开(公告)号：US5204732A

    公开(公告)日：1993-04-20

    申请号：US846811

    申请日：1992-03-06

    申请人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    发明人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    IPC分类号： G01S7/48 ,  G01S17/36

    CPC分类号： G01S17/36

    摘要： An optical distance measuring apparatus is disclosed which is operable in accordance with a phase difference detecting process wherein a processing system including a central processing unit and a digital type mix-down circuit detects and calculates a phase difference between the electrical phase of a signal output from a light receiving portion in response to receipt of a reflected light beam and the electrical phase of a reference signal output from a reference oscillator so as to determine a distance between the apparatus and a object spaced at a distance to be measured with reference to the electrical phase of a local oscillation signal output from a local oscillator. A second circuit system of the processing system on the light receiving side includes a ladder resistance type attenuation circuit, a multiplexer, an veriable gain current amplifier, a wave shape correcting circuit and a signal amplitude detecting circuit. When the signal amplitude detecting circuit detects that the signal derived from the reflected light beam has an amplitude in excess of a predetermined value, the central processing unit controls the multiplexer so as to reduce a magnitude of the amplitude. In addition, an optical distance measuring apparatus operable in accordance with a time difference detecting process is disclosed.

    摘要翻译： 公开了一种光学距离测量装置，其可以根据相位差检测处理操作，其中包括中央处理单元和数字型混合降低电路的处理系统检测并计算输出的信号的电相位之间的相位差 响应于接收到反射光束的光接收部分和从参考振荡器输出的参考信号的电相，以便确定设备与被测量距离之间的物体之间的距离 从本地振荡器输出的本地振荡信号的相位。 光接收侧处理系统的第二电路系统包括梯形电阻型衰减电路，多路复用器，可验证增益电流放大器，波形校正电路和信号幅度检测电路。 当信号幅度检测电路检测到从反射光束导出的信号具有超过预定值的幅度时，中央处理单元控制多路复用器以减小振幅的大小。 此外，公开了一种根据时差检测处理可操作的光学距离测量装置。

    Light irradiating apparatus having light emitting diode used as light source
    3.
    发明授权
    Light irradiating apparatus having light emitting diode used as light source 失效
    具有用作光源的发光二极管的光照射装置

    公开(公告)号：US5257173A

    公开(公告)日：1993-10-26

    申请号：US801943

    申请日：1991-12-03

    申请人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    发明人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    IPC分类号： F21K99/00 ,  F21V8/00 ,  G02B6/00 ,  G02B6/32 ,  F21V5/04

    CPC分类号： G02B6/0008 ,  G01S7/4814 ,  G01S7/4818 ,  G02B6/32 ,  G02B6/0001 ,  Y10S362/80

    摘要： A light source is constituted by a plurality of light emitting units which are arranged opposite to a light irradiating lens such that light emission from a part of the light source is changed to light emission from the whole surface of the light source and vice versa. In addition, a light irradiating apparatus having a light emitting diode used therefor as a light source comprises optical fiber(s) arranged between the light emitting diode and a light emitting lens such that a light emitted from the light emitting diode can be conducted to the light irradiating lens is disclosed. One end of each optical fiber is located at the position in the vicinity of the light emitting diode and other end of the same is located at the position substantially coincident with the focus of the light irradiating lens. In another embodiment, an optical fiber employable for an optical radar system has an outlet end of the optical fiber which is formed by two inclined surfaces in a wedge-shaped configuration. An inlet end of the optical fiber is formed at a right angle relative to an optical axis of the optical fiber.

    摘要翻译： 光源由与光照射透镜相对设置的多个发光单元构成，使得来自光源的一部分的光发射变为来自光源的整个表面的发光，反之亦然。 此外，具有用作光源的发光二极管的光照射装置包括布置在发光二极管和发光透镜之间的光纤，使得从发光二极管发射的光可以被传导到 公开了光照射透镜。 每个光纤的一端位于发光二极管附近的位置，其另一端位于与光照射透镜的焦点基本一致的位置。 在另一个实施例中，可用于光学雷达系统的光纤具有光纤的出口端，该出口端由楔形构型的两个倾斜表面形成。 光纤的入口端相对于光纤的光轴成直角。

    Optical distance measuring apparatus
    4.
    发明授权
    Optical distance measuring apparatus 失效

    公开(公告)号：US5210587A

    公开(公告)日：1993-05-11

    申请号：US845681

    申请日：1992-03-04

    申请人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    发明人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    IPC分类号： G01S17/36 ,  G01S17/42

    CPC分类号： G01S17/36

    摘要： An optical distance measuring apparatus operable in accordance with a phase difference detecting process, comprises a processing system including a central processing unit and first and second local oscillating circuits which serve to detect and calculate a phase difference between the electrical phase of a modulated signal outputted from a reference oscillator electrically connected to a light source via a modulating circuit and the electrical phase of a demodulated signal outputted from a demodulating circuit electrically connected to a light receiving portion so as to determine a distance between the apparatus and an object to be measured based on the detected phase difference with reference to the electrical phase of a reference signal outputted from the reference oscillator. A first local oscillating signal is outputted from the first local oscillating circuit and it is then subjected to frequency conversion together with the demodulated signal in a mixer so as to output a first intermediate frequency, while a second local oscillating signal is outputted from the second local oscillating circuit and it is then subjected to frequency conversion in a mixer together with the demodulated signal so as to output a second intermediate frequency signal. One of the first and second intermediate frequency signals is selected depending on the present distance between the apparatus and the object to be measured.

    Apparatus for measuring a distance between two running vehicles using light wave
    5.
    发明授权
    Apparatus for measuring a distance between two running vehicles using light wave 失效
    用于使用光波测量两个行驶车辆之间的距离的装置

    公开(公告)号：US5251000A

    公开(公告)日：1993-10-05

    申请号：US988782

    申请日：1992-12-10

    申请人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Takao Seto ,  Kazuhisa Iwasaki ,  Hideki Kitamura ,  Yasushi Senoo

    发明人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Takao Seto ,  Kazuhisa Iwasaki ,  Hideki Kitamura ,  Yasushi Senoo

    IPC分类号： B60R21/00 ,  B60W30/00 ,  G01C3/06 ,  G01S17/93 ,  G01C3/08

    CPC分类号： G01S17/936

    摘要： To measure a distance between two running vehicles a measurement signal is first generated by irradiating a light beam toward an article to be measured and then receiving the reflected light beam from the article. A reference signal and the measurement signal generated in the above way are input to a digital mix-down circuit which comprises two-stage flip-flop circuit to determine a phase difference between the reference signal and the measurement signal. The apparatus includes a clock delay circuit for delaying the high-going (rising) edge of the measurement signal while the reference signal is going high at an output terminal of a flip-flop circuit on the input side of the digital mix-down circuit, and a data delay circuit for delaying the down-going (falling) edge of the reference signal input into a data terminal of the flip-flop circuit. Usually, the clock delay circuit is electrically connected to the digital mix-down circuit via the data delay circuit, while the data delay circuit is electrically connected directly to the digital mix-down circuit. Alternatively, both the clock delay circuit and the data delay circuit may be electrically connected directly to the digital mix-down circuit.

    Apparatus and method of warning rear-end collision
    6.
    发明授权
    Apparatus and method of warning rear-end collision 失效
    警告后端碰撞的装置和方法

    公开(公告)号：US5502432A

    公开(公告)日：1996-03-26

    申请号：US988675

    申请日：1992-12-10

    申请人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Yasushi Senoo

    发明人： Yukio Ohmamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Yasushi Senoo

    IPC分类号： B60R21/00 ,  B60W30/00 ,  G01S13/93 ,  G08G1/16 ,  B60Q1/00

    CPC分类号： G01S13/931 ,  G01S2013/9325 ,  G01S2013/9353 ,  G01S2013/9375

    摘要： A warning apparatus for warning of possible rear-end collision of a given vehicle having the warning apparatus with another vehicle preceding the given vehicle includes: a computer; a distance sensor for measuring a vehicle-to-vehicle distance to the another preceding vehicle; and a velocity sensor for measuring the velocity of the given vehicle. The computer computes a relative velocity of the given and the another preceding vehicle from a differential of the vehicle-to-vehicle distance and then computes an anticipated rear-end collision time by dividing of the vehicle-to-vehicle distance by the relative velocity of the given vehicle. The computer corrects the anticipated rear-end collision time in response to an acceleration and the relative velocity. The computer produces a warning of signal and an alarm is provided in response to the corrected anticipated rear-end collision time. A method of warning of a possible rear-end collision comprises the step of: detecting a vehicle-to-vehicle distance between a given vehicle and the another vehicle preceding the given vehicle; detecting a velocity of the given vehicle; computing an anticipated rear-end collision time T.sub.a of the given vehicle with the another vehicle, with an equation: ##EQU1## and producing a warning in response to the computed anticipated rear-end collision time T.sub.a.

    摘要翻译： 用于警告具有警告装置的给定车辆与给定车辆之前的另一车辆可能的后端碰撞的警告装置包括：计算机; 距离传感器，用于测量与前一车辆的车辆间距离; 以及用于测量给定车辆的速度的速度传感器。 计算机根据车辆到车辆距离的差分来计算给定车辆和另一前车辆的相对速度，然后通过将车辆到车辆距离除以相对速度来计算预期的后端碰撞时间 给定的车辆。 计算机响应于加速度和相对速度来校正预期的后端碰撞时间。 计算机产生信号警告，响应修正的预期后端碰撞时间而提供报警。 警告可能的后端碰撞的方法包括以下步骤：检测给定车辆与给定车辆之前的另一车辆之间的车辆与车辆的距离; 检测给定车辆的速度; 用另一车辆计算给定车辆的预期后端碰撞时间Ta，其方程为：所计算的预期后端碰撞时间Ta。

    Optical distance measuring apparatus
    8.
    发明授权
    Optical distance measuring apparatus 失效
    光学测距仪

    公开(公告)号：US5317375A

    公开(公告)日：1994-05-31

    申请号：US841049

    申请日：1992-02-25

    申请人： Yukio Omamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    发明人： Yukio Omamyuda ,  Shigeru Kimura ,  Toru Tanabe ,  Kazuhisa Iwasaki ,  Takao Seto ,  Hideki Kitamura ,  Kazuhiko Sugimura ,  Yasushi Senoo

    IPC分类号： G01S7/481 ,  G01S7/497 ,  G01C3/08

    CPC分类号： G01S7/4812 ,  G01S7/497

    摘要： An optical distance measuring apparatus operable in accordance with an optical intensity modulating process to optically measure a distance between a driver's vehicle and a vehicle running ahead of his vehicle includes a light emitting portion serving as a light source to emit a distance measuring light beam, an optical lens system, a light receiving portion for receiving a reflected light reflected from the vehicle running ahead of the driver's vehicle through the optical lens system, and a processing system for correcting phase delay between the distance measuring light beam and the reflected light beam utilizing reference light beams emitted from a plurality of reference light sources to determine the distance. A processing system for determining the distance based on a time difference between the time when the distance measuring light beam is emitted from the light emitting portion and the time when the reflected light beam is received by the light receiving portion may be substituted for the processing system for the correcting phase delay between the distance measuring light beam and the reflected light beam. In addition, the system includes an apparatus for mounting on a vehicle body optical distance measuring apparatuses, each operable as a light emitting/receiving portion.

    摘要翻译： 光学距离测量装置可以根据光强度调制过程进行光学测量，以测量驾驶员与前方车辆之间的距离，包括用作发射测距光束的光源的发光部分， 光学透镜系统，用于通过光学透镜系统接收从驾驶车辆前方行驶的车辆反射的反射光的光接收部分，以及利用参考来校正距离测量光束和反射光束之间的相位延迟的处理系统 从多个参考光源发射的光束以确定距离。 用于基于从发光部分发射距离测量光束的时间与由光接收部分接收反射光束的时间之间的时间差来确定距离的处理系统可以代替处理系统 用于校正距离测量光束和反射光束之间的相位延迟。 另外，该系统包括用于安装在车身上的光学距离测量装置的装置，每个可测量装置可用作发光/接收部分。