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公开(公告)号：US5153751A
公开(公告)日：1992-10-06
申请号：US692379
申请日：1991-04-26
CPC分类号： G02B27/0103 , G02B2027/0109 , G02B2027/0116 , G02B2027/0118 , G02B2027/012
摘要： The invention relates to a holographic display element which includes a reflection hologram and is attached to, for example, an automobile windshield so as to project light rays carrying images of display information onto the display element from a luminous source in the car. When external light such as sunlight coming is diffracted by the reflection hologram there is a possibility that visible light ranging from 570 nm (greenish yellow) to 780 nm (red) is diffracted into a certain range of angles in a horizontal plane and makes a strange impression on persons viewing the windshield from the outside. According to the invention another reflection hologram having different diffraction characteristics is superposed on the first hologram on the outer side in order that diffraction of visible light into the aforementioned range of angles may become inconspicuous. In one embodiment the second hologram diffracts light of 570-780 nm at angles outside the aforementioned range of angles thereby to prevent undesirable diffraction by the first hologram. In another embodiment the second hologram diffracts different wavelengths into the range of angles so that additive color mixing with visible light diffracted from the first hologram results in whitening of diffracted light or reduction in the excitation purity of diffracted light as viewed outside the vehicle.
摘要翻译： 本发明涉及一种全息显示元件，其包括反射全息图，并且附接到例如汽车挡风玻璃，以便将来自汽车中的发光源的显示信息的图像的光线投射到显示元件上。 当诸如阳光的外部光被反射全息图衍射时，存在从570nm（绿黄色）到780nm（红色）的可见光在水平面中衍射到一定角度范围并产生奇怪的可能性 从外面观看挡风玻璃的人的印象。 根据本发明，具有不同衍射特性的另一反射全息图在外侧叠加在第一全息图上，以便将可见光衍射到上述角度范围内可能变得不显眼。 在一个实施例中，第二全息图以上述角度范围外的角度衍射570-780nm的光，从而防止第一全息图的不期望的衍射。 在另一个实施例中，第二全息图将不同的波长衍射成角度范围，使得从第一全息图衍射的可见光的附加色混合导致衍射光的白化或降低衍射光的激发纯度，如在车辆外部观察的。
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公开(公告)号：US5333071A
公开(公告)日：1994-07-26
申请号：US811437
申请日：1991-12-23
CPC分类号： G02B5/32 , B60Q1/302 , Y10S359/90
摘要： A holographic display apparatus reconstructs an image by projecting a beam of a luminous source to a holographic sheet including a plurality of holograms. The holograms are arranged so that the central axes of images recorded in the holographic sheet are directed in a same direction, in the diverging direction, or in a converging direction. Additionally, each hologram has a first focal distance f1 (mm) and a second focal distance f2 (mm) which are in a relationship such that f1.ltoreq.f2/28+50 and f1
摘要翻译： 全息显示装置通过将光源的光束投影到包括多个全息图的全息片来重建图像。 全息图被布置成使得记录在全息图片中的图像的中心轴线沿发散方向或会聚方向指向相同的方向。 此外，每个全息图具有第一焦距f1（mm）和第二焦距f2（mm），其具有使得f1
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公开(公告)号：US06269204B1
公开(公告)日：2001-07-31
申请号：US09405216
申请日：1999-09-27
申请人： Tomohisa Ishikawa
发明人： Tomohisa Ishikawa
IPC分类号： G02B628
CPC分类号： H04B10/27 , G02B6/29332 , G02B6/29385 , H04B10/071 , H04B10/272 , H04J14/0226 , H04J14/0258 , H04J14/0276 , H04J14/0282
摘要： Disclosed herein is a system including a first optical fiber transmission line, a plurality of second optical fiber transmission lines, a branching section for optically connecting these first and second optical fiber transmission lines, a monitor device optically connected to the first optical fiber transmission line, and a plurality of reflecting sections respectively provided in the vicinity of open ends of the second optical fiber transmission lines. The monitor device outputs monitor light through the first optical fiber transmission line and the branching section to each of the second optical fiber transmission lines. The reflecting sections reflect the monitor light to thereby generate identification optical signals having different patterns for respectively identifying the second optical fiber transmission lines. With this configuration, the monitor device can detect an abnormality in each of the second optical fiber transmission lines according to the presence of absence of the corresponding identification optical signal.
摘要翻译： 本发明公开了一种系统，包括第一光纤传输线，多条第二光纤传输线，用于光纤连接这些第一和第二光纤传输线的分支部分，与第一光纤传输线光学连接的监视器， 以及分别设置在第二光纤传输线的开口端附近的多个反射部。 监视器装置通过第一光纤传输线和分支部将监视光输出到每个第二光纤传输线。 反射部分反射监视光，从而产生具有不同图案的识别光信号，以分别识别第二光纤传输线。 利用这种结构，监视装置可以根据是否存在对应的识别光信号来检测每个第二光纤传输线中的异常。
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公开(公告)号：US07642495B2
公开(公告)日：2010-01-05
申请号：US12109972
申请日：2008-04-25
申请人： Tomohisa Ishikawa
发明人： Tomohisa Ishikawa
CPC分类号： G01J1/32
摘要： A light source error detection system and method including monitoring a plurality of characteristics of a light source and controlling the light source based on a plurality of monitored results. The system and method control the light source differently for a first case when only one of the monitored characteristics is abnormal than a second case when more than two of the monitored characteristics are abnormal. In controlling the light source, an output power of the light source is decreased with different time constant for the first case and the second case.
摘要翻译： 一种光源误差检测系统和方法，包括监视光源的多个特性并基于多个监视结果控制光源。 当仅有一个监测特性异常时，系统和方法对于第一种情况不同地控制光源，而当超过两个监测特性是异常时，系统和方法不同地控制光源。 在控制光源时，对于第一种情况和第二种情况，光源的输出功率以不同的时间常数减小。
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公开(公告)号：US5936753A
公开(公告)日：1999-08-10
申请号：US874667
申请日：1997-06-13
申请人： Tomohisa Ishikawa
发明人： Tomohisa Ishikawa
IPC分类号： H04B10/07 , H04B10/077 , H04B10/079 , H04B10/27 , H04B10/272 , H04B10/294 , H04B10/297 , H04B10/54 , H04B10/564 , H04J14/00 , H04J14/02 , H04Q11/00 , H04B10/08
CPC分类号： H04B10/272 , H04B10/0793 , H04B10/07955 , H04B10/0799 , H04J14/0226 , H04J14/0232 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04B2210/08 , H04J14/0298 , H04Q11/0062 , H04Q2011/0039
摘要： An optical network system for bidirectional transmission between a main system (e.g., central station) and a plurality of auxiliary systems (e.g., subscriber's stations). The main system outputs a main optical signal to a main fiber. The auxiliary systems output auxiliary optical signals to a plurality of auxiliary fibers, respectively. The main fiber and the auxiliary fibers are network-connected by a connecting unit. The main system has a detector for detecting the auxiliary optical signals and a control signal generator for generating a control signal including data for designating a specific auxiliary system whose auxiliary optical signal is not detected. The main optical signal in the auxiliary fiber corresponding to the specific auxiliary system is attenuated according to the control signal. Accordingly, laser hazard in each auxiliary system is prevented.
摘要翻译： 一种用于在主系统（例如，中心站）和多个辅助系统（例如，用户站）之间进行双向传输的光网络系统。 主系统将主光信号输出到主光纤。 辅助系统分别将辅助光信号输出到多个辅助光纤。 主纤维和辅助纤维通过连接单元进行网络连接。 主系统具有用于检测辅助光信号的检测器和用于产生控制信号的控制信号发生器，该控制信号包括用于指定不检测辅助光信号的特定辅助系统的数据。 对应于特定辅助系统的辅助光纤中的主光信号根据控制信号衰减。 因此，防止了每个辅助系统中的激光危险。
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公开(公告)号：US5854702A
公开(公告)日：1998-12-29
申请号：US694343
申请日：1996-08-08
IPC分类号： H04B10/40 , H01S5/068 , H04B10/079 , H04B10/272 , H04B10/50 , H04B10/564 , H04B10/60 , H04B10/67 , H04B10/69 , H04B10/00
CPC分类号： H04B10/40 , H04B10/0795
摘要： An optical module includes a photodiode disposed in front of a laser diode with an offset from an optical axis of the laser diode, for monitoring the power of an optical beam emitted from the laser diode in a forward direction. The optical module further achieves switching between a transmission mode and a reception mode in response to a drive current supplied to the laser diode.
摘要翻译： 光学模块包括设置在激光二极管的前面，具有偏离激光二极管的光轴的光电二极管，用于监视从激光二极管向前发射的光束的功率。 光模块还响应于提供给激光二极管的驱动电流而实现在传输模式和接收模式之间的切换。
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公开(公告)号：US20110052207A1
公开(公告)日：2011-03-03
申请号：US12805690
申请日：2010-08-13
IPC分类号： H04B10/04
CPC分类号： H01S5/0687 , H01S5/141 , H04B10/572
摘要： An optical transmission device in which: a first cyclic filter with a fixed transmission wavelength characteristic and a second cyclic filter with a variable transmission wavelength characteristic are combined, and the transmission wavelength characteristic of the second cyclic filter is changed according to a target wavelength, to thereby control the relative phase relationship of the transmission wavelength characteristics of the first and second cyclic filters. Moreover a light source is controlled according to a monitored value of the transmittance of the second cyclic filter with respect to the control target light, to thereby match the wavelength of the control target light with the target wavelength. Consequently, it is possible, with a simple configuration using a combination of two cyclic filters, to variably control wavelength at arbitrary wavelength intervals at a high level of precision.
摘要翻译： 一种光传输装置，其特征在于：组合具有固定透射波长特性的第一循环滤波器和具有可变透射波长特性的第二循环滤波器，并且根据目标波长将第二循环滤波器的透射波长特性改变为 从而控制第一和第二循环滤波器的透射波长特性的相对相位关系。 此外，根据第二循环滤波器相对于控制目标光的透射率的监测值来控制光源，从而将控制目标光的波长与目标波长相匹配。 因此，通过使用两个循环滤波器的组合的简单配置，可以以高精度可变地控制任意波长间隔的波长。
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公开(公告)号：US20080265132A1
公开(公告)日：2008-10-30
申请号：US12109972
申请日：2008-04-25
申请人： Tomohisa Ishikawa
发明人： Tomohisa Ishikawa
IPC分类号： G01J1/44
CPC分类号： G01J1/32
摘要： A light source error detection system and method including monitoring a plurality of characteristics of a light source and controlling the light source based on a plurality of monitored results. The system and method control the light source differently for a first case when only one of the monitored characteristics is abnormal than a second case when more than two of the monitored characteristics are abnormal. In controlling the light source, an output power of the light source is decreased with different time constant for the first case and the second case.
摘要翻译： 一种光源误差检测系统和方法，包括监视光源的多个特性并基于多个监视结果控制光源。 当仅有一个监测特性异常时，系统和方法对于第一种情况不同地控制光源，而当超过两个监测特性是异常时，系统和方法不同地控制光源。 在控制光源时，对于第一种情况和第二种情况，光源的输出功率以不同的时间常数减小。
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9.发明授权Electronic musical instrument having automatic sound signal generation and a rhythm-play function based on manual operation 失效电子乐器具有自动声音信号产生和基于手动操作的节奏播放功能
公开(公告)号：US4972755A
公开(公告)日：1990-11-27
申请号：US361826
申请日：1989-06-01
申请人： Yoichiro Tajima , Hideo Yamaya , Tomohisa Ishikawa
发明人： Yoichiro Tajima , Hideo Yamaya , Tomohisa Ishikawa
摘要： A plurality of pad operating means for manual operation are provided on a keyboard panel of an electronic keyboard musical instrument. When an operator operates the pad operating means using the keyboard during melody play, an operation signal is supplied to a CPU, and a rhythm sound corresponding to the operated pad is generated under control of the CPU. An automatic sound signal generator is provided for generating and outputting sound signals according to a designated rhythm, and selectively stops such sound signal generation. A sounding system is provided for sounding the signals received thereby.
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公开(公告)号：US4656428A
公开(公告)日：1987-04-07
申请号：US736444
申请日：1985-05-21
申请人： Tomohisa Ishikawa
发明人： Tomohisa Ishikawa
CPC分类号： G10H7/02 , G10H1/42 , G10H7/06 , G10H2230/321
摘要： A step signal of which the period varies according to random data is derived from a step pulse generator, and is supplied to an address counter. By the output data from the address counter, an address of a waveform ROM is specified. From a waveform ROM, the waveform based on the random data is output in the form of a distorted waveform signal. Using this output signal of the distorted waveform, a cymbal sound, for example, is generated in a musical tone generator.
摘要翻译： 根据随机数据，周期变化的阶跃信号从步进脉冲发生器导出，并被提供给地址计数器。 通过来自地址计数器的输出数据，指定波形ROM的地址。 从波形ROM中，以失真的波形信号的形式输出基于随机数据的波形。 使用该畸变波形的输出信号，例如在乐音发生器中产生钹音。
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