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1. 发明授权

US5389956A Techniques for improving droplet uniformity in acoustic ink printing 失效
标题翻译：提高声墨印刷液滴均匀性的技术
公开(公告)号：US5389956A
公开(公告)日：1995-02-14
申请号：US931804
申请日：1992-08-18
申请人： Babur B. Hadimioglu , Butrus T. Khuri-Yakub , Richard L. Weisfield , Eric G. Rawson
发明人： Babur B. Hadimioglu , Butrus T. Khuri-Yakub , Richard L. Weisfield , Eric G. Rawson
IPC分类号： B41J2/015 , B41J2/14 , B41J2/04
CPC分类号： B41J2/14008
摘要： Techniques for improving droplet uniformity in acoustic ink printing. Row to row variations in an average droplet characteristic are reduced by controlling the electric power applied to the droplet ejectors of the individual rows. By applying the proper power to each row, the average droplet characteristic from the individual rows are made substantially. Another technique varies the efficiency of the individual droplet ejectors by physically trimming (such as with a laser) one or more of its components. Trimming may be performed on a droplet ejector's transducer, varactor, one or more associated resistors, or one or more capacitors. Yet another technique controls droplet ejector efficiency by electrically controlling the capacitance of a varactor associated with each droplet ejector, and thus each droplet ejector's efficiency. The voltage applied to each varactor may be controlled as a function of its column (to improve column to column uniformity), row (to improve row to row uniformity) or as a function of its column and row (to control the efficiency of the individual droplet ejector).
摘要翻译：提高声墨印刷液滴均匀性的技术。通过控制施加到各行的液滴喷射器的电力来减小平均液滴特性中的行排列变化。通过对每行施加适当的功率，基本上实现来自各行的平均液滴特性。另一种技术通过物理地修整（例如用激光）其一个或多个组件来改变各个液滴喷射器的效率。可以在液滴喷射器的换能器，变容二极管，一个或多个相关联的电阻器或一个或多个电容器上执行修整。另一种技术通过电控制与每个液滴喷射器相关联的变容二极管的电容以及因此每个液滴喷射器的效率来控制液滴喷射器的效率。施加到每个变容二极管的电压可以作为其列的函数来控制（以提高列到列的均匀性），行（以提高行到行均匀性）或者作为其列和行的函数（以控制个体的效率液滴喷射器）。

2. 发明授权

US4687284A Bright fiber-free biconically tapered couplers 失效
标题翻译：光纤无光纤双锥形耦合器
公开(公告)号：US4687284A
公开(公告)日：1987-08-18
申请号：US646548
申请日：1984-09-04
申请人： Eric G. Rawson , Lawrence C. Stewart
发明人： Eric G. Rawson , Lawrence C. Stewart
IPC分类号： G02B6/28
CPC分类号： G02B6/2856
摘要： A biconically tapered passive star optical coupler has mutually exclusive input and output optical fibers, so that optical power injected into any one of the input fibers is relatively uniformally distributed to all of the output fibers.
摘要翻译：双锥形无源星形光耦合器具有相互排斥的输入和输出光纤，使得注入任何一个输入光纤的光功率相对均匀地分布到所有输出光纤。

3. 发明授权

US4603421A Incoherent composite multi-emitter laser for an optical arrangement 失效
标题翻译：用于光学布置的不相干复合多发射体激光器
公开(公告)号：US4603421A
公开(公告)日：1986-07-29
申请号：US444145
申请日：1982-11-24
申请人： Donald R. Scifres , Eric G. Rawson
发明人： Donald R. Scifres , Eric G. Rawson
IPC分类号： H04B10/02 , G02B6/28 , G02B6/42 , H01S5/00 , H01S5/40 , H04B10/18 , H04B10/28 , H01S3/19
CPC分类号： H04B10/2507 , G02B6/2808 , G02B6/425 , H01S5/4031 , H01S5/4025 , H01S5/4056
摘要： A multi-emitter extended source solid state laser designed to omit light beams at multiple wavelengths within a narrow total spectral bandwidth, that is, a relatively incoherent composite output beam of narrow total spectral bandwidth, is used as the input to a multimode optical fiber of an optic communications link or network. By providing an incoherent composite laser input beam to the fiber, modal noise due to coherence effects are virtually eliminated so that such effects no longer affect network performance. In addition, because the source is extended, a more uniform illumination of the fiber face is achieved. An exemplary multi-emitter laser would consist of an array of simultaneously driven emitting regions or cavities which operate in multiple longitudinal modes.
摘要翻译：多发射器扩展源固态激光器被设计为在狭窄的总光谱带宽内省略多个波长的光束，即窄的总光谱带宽的相对非相干的复合输出光束作为多模光纤的输入光通信链路或网络。通过向光纤提供非相干复合激光输入光束，实际上消除了由于相干效应引起的模态噪声，使得这种效应不再影响网络性能。另外，由于光源被延伸，所以实现了光纤面的更均匀的照明。示例性的多发射器激光器将由以多个纵向模式操作的同时驱动的发射区域或空腔的阵列组成。

4. 发明授权

US4233589A Active T-coupler for fiber optic local networks which permits collision detection 失效
标题翻译：用于光纤局域网的有源T型耦合器，允许进行碰撞检测
公开(公告)号：US4233589A
公开(公告)日：1980-11-11
申请号：US43391
申请日：1979-05-25
申请人： Eric G. Rawson , Robert M. Metcalfe
发明人： Eric G. Rawson , Robert M. Metcalfe
IPC分类号： H04B10/29 , H04L12/413 , H04Q9/00 , H04B9/00
CPC分类号： H04B10/29 , H04L12/413
摘要： An active T-coupler for fiber optic local networks which permits collision detection wherein two input 36, 44 optical fibers are coupled to photodetectors 360, 440, respectively. Two output 34, 46 optical fibers are coupled to receive light from light sources 340, 460. Driving sources 340, 460 are gate circuits 342, 462, which function in a manner similar to an OR gate, via driver circuits 341, 461. These OR gates receive electrical signals from the host station or an input light fiber detector. Further, the input detectors 360, 440 provide electrical signals to the driving OR gates 342, 462 to pass the signal on, i.e. repeat, or drive OR gate 370 to transmit the signal to the host station. Thus the coupler can act as an optical repeater or transmit originally generated light signals in either the forward or reverse directions. Further, the host station can monitor the electrical signals from the input detectors to detect the occurrence of a data collision while transmitting and thereby react appropriately.
摘要翻译：用于光纤局部网络的有源T耦合器允许碰撞检测，其中两个输入端36,44光纤分别耦合到光电检测器360,440。两个输出34,46光纤被耦合以接收来自光源340,460的光。驱动源340,460是通过驱动器电路341,461以类似于或门的方式起作用的门电路342,462。这些或门从主站或输入光纤检测器接收电信号。此外，输入检测器360,440向驱动或门342,462提供电信号以传递信号，即重复或驱动或门370，以将信号传送到主机站。因此，耦合器可以用作光中继器或者在正向或反向方向上发送原始产生的光信号。此外，主机可以监视来自输入检测器的电信号，以便在发送时检测数据冲突的发生，从而适当地进行反应。

5. 发明授权

US06414807B1 Method and apparatus for optically sensing accurate clock patterns 失效
公开(公告)号：US06414807B1
公开(公告)日：2002-07-02
申请号：US09120695
申请日：1998-07-22
申请人： Charles A. Bates , Lawrence M. Bryant , David S. Kuo , Eric G. Rawson
发明人： Charles A. Bates , Lawrence M. Bryant , David S. Kuo , Eric G. Rawson
IPC分类号： G11B509
摘要： A disk drive system is described for forming and reading precise optically detectable patterns on rotating members of a disk and spindle assembly used in data storage system. In particular the invention describes a magnetic disk drive employing a laser system to form and sense optical clock patterns placed on the rotating members of the disk drive. These optically detectable patterns are used to create an accurate clock track. The clock may be used to create multiple accurate magnetic patterns on one or more disks attached to a disk and spindle assembly in a magnetic data storage system. By successively changing the radius at which the magnetic patterns are created it is then possible to create multiple magnetic patterns at successive radii with all such magnetic patterns having a precise geometric relationship to each other. Alternatively, the accurate clock pattern may stand alone as an encoder. Additionally, the laser system may also be used to form textured surfaces on a disk to control the flying characteristics of a magnetic head slider assembly. These textured surfaces may also serve as a resting area for the magnetic head slider assembly when the disk is not spinning.

6. 发明授权

US5212379A Fiber optical monitor for detecting motion based on changes in speckle patterns 失效
标题翻译：光纤监视器，用于根据斑点图案的变化检测运动
公开(公告)号：US5212379A
公开(公告)日：1993-05-18
申请号：US802868
申请日：1991-12-06
申请人： Antonio B. Nafarrate , Eric G. Rawson
发明人： Antonio B. Nafarrate , Eric G. Rawson
IPC分类号： A61B5/113 , G01P13/00
CPC分类号： A61B5/6892 , A61B5/113 , G01P13/00
摘要： A motion monitor using coherent or partially coherent light passing through an optical fiber which is in contact or close to an object whose motion is to be monitored. An optical speckle pattern is formed near the output of the optical fiber which pattern changes as the fiber moves in response to the motion of the object being monitored. An optical detector monitors all or a part of the speckle pattern and electronically processes the optical detector's electrical output signals to derive information on the status of the object being monitored.
摘要翻译：使用相干或部分相干光通过光纤的运动监视器，该光纤接触或靠近要监视其运动的物体。在光纤的输出端附近形成光学斑纹图案，该图案随着光纤响应被监视物体的运动而移动而改变。光学检测器监测散斑图案的全部或一部分，并且电子处理光学检测器的电输出信号以得到关于被监测物体的状态的信息。

7. 发明授权

US5122818A Acoustic ink printers having reduced focusing sensitivity 失效
标题翻译：具有降低聚焦灵敏度的声墨打印机
公开(公告)号：US5122818A
公开(公告)日：1992-06-16
申请号：US682859
申请日：1991-04-05
申请人： Scott A. Elrod , Edward A. Richley , Eric G. Rawson
发明人： Scott A. Elrod , Edward A. Richley , Eric G. Rawson
IPC分类号： B41J2/14
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： To improve the tolerance of acoustic ink printers to changes in their free ink surface levels, provision is made for significantly reducing the effect of half wave resonances on the acoustic power density of the acoustic beam or beams that are incident on the free ink surface of such a printer, thereby reducing its focusing sensitivity. Some of the approaches that are taken to accomplish this rely upon acoustic losses to damp out the halfwave resonances and anti-resonances, while others employ multi-frequency rf voltage pulses for driving the droplet ejector or ejectors so that the acoustic power perturbations caused by the half wave resonances and anti-resonances of the different frequencies tend to neutralize each other. Indeed, the use of an acoustically lossy ink to dampen the half wave resonances and anti-resonances is compatible with selecting the frequency content of the acoustic radiation to neutralize them, so a combination of those two techniques can be employed, if desired, to carry out this invention.
摘要翻译：为了提高声墨水打印机对其自由墨水表面水平的变化的公差，提供了显着减少半波共振对入射在这样的自由墨表面上的声束或声束的声功率密度的影响打印机，从而降低其聚焦灵敏度。为实现这一目的而采取的一些方法依赖于声学损耗来衰减半波共振和抗共振，而其它方法则采用多频率rf电压脉冲来驱动液滴喷射器或喷射器，使得由声波损耗引起的声功率扰动不同频率的半波共振和反共振倾向于相互中和。实际上，使用声学损耗的油墨来抑制半波谐振和抗共振与选择声辐射的频率含量以中和它们是相容的，因此如果需要，可以采用这两种技术的组合来携带本发明。

8. 发明授权

US4035068A Speckle minimization in projection displays by reducing spatial coherence of the image light 失效
标题翻译：通过减少图像光的空间相干性，投影显示中的斑点最小化
公开(公告)号：US4035068A
公开(公告)日：1977-07-12
申请号：US590250
申请日：1975-06-25
申请人： Eric G. Rawson
发明人： Eric G. Rawson
IPC分类号： G02B27/48 , G02B23/00 , G02B13/20 , G03B21/00
CPC分类号： H04N9/3161 , G02B27/48 , H04N9/3108
摘要： An optical system for minimizing the speckle observed in a projected image, the image being produced by a projection display device. Coherent or non-coherent light illuminates the projection display device image and an image thereof is formed at an intermediate image plane. A narrow angle diffuser is positioned at the intermediate image plane and produces an enlarged illuminating aperture at the Fourier transform plane. The relatively large angle subtended by the illuminating aperture at a second image plane reduces the spatial coherence of the image formed thereat.
摘要翻译：一种用于最小化在投影图像中观察到的斑点的光学系统，该图像由投影显示装置产生。相干或非相干光照亮投影显示装置图像，并且其图像形成在中间图像平面处。窄角漫射器位于中间像平面处，并在傅立叶变换平面处产生放大的照明孔。在第二像面处由照明孔对着的较大的角度减小了在其上形成的图像的空间相干性。

9. 发明授权

US6048050A Electrorheological based droplet ejecting printer 失效
标题翻译：电流变液滴喷墨打印机
公开(公告)号：US6048050A
公开(公告)日：2000-04-11
申请号：US140658
申请日：1993-10-21
申请人： Robert W. Gundlach , Eric G. Rawson
发明人： Robert W. Gundlach , Eric G. Rawson
IPC分类号： B41J2/045 , B41J2/015 , B41J2/055 , B41J2/06 , B41J2/14 , B41J2/135
CPC分类号： B41J2/06 , B41J2/14008 , B41J2002/061 , B41J2002/14322
摘要： Electrorheological based acoustic droplet ejectors and their applications in acoustic print heads are described. The droplet ejectors include an acoustic transducer which generates acoustic energy into a fluid well holding an electrorheological fluid such that the fluid's free surface is adjacent electric field electrodes. The acoustic energy is such that droplets are ejected from the fluid as long as a lower voltage is applied to the electrodes. However, when a higher voltage is applied to the field electrodes, the electrodes produce an electric field through the fluid which causes the viscosity of the fluid to increase sufficiently that droplet ejection is prevented. When used in a print head, the electrorheological fluid is an ink. Further, many (perhaps thousands) of individual droplet ejectors are formed in the print head. By controlling droplet ejection from the individual print heads, an image can be produced on a recording medium.
摘要翻译：描述了基于电流变学的声学液滴喷射器及其在声学打印头中的应用。液滴喷射器包括声学换能器，其将声能产生到保持电流变流体的流体井中，使得流体的自由表面是相邻的电场电极。只要较低的电压施加到电极上，声能就能使液滴从流体喷出。然而，当对场电极施加较高的电压时，电极通过流体产生电场，这导致流体的粘度增加，从而防止液滴喷射。当用于打印头时，电粘滞性流体是油墨。此外，在打印头中形成许多（可能数千个）单独的液滴喷射器。通过控制从各个打印头的液滴喷射，可以在记录介质上产生图像。

10. 发明授权

US5216451A Surface ripple wave diffusion in apertured free ink surface level controllers for acoustic ink printers 失效
标题翻译：表面波纹扩散在无孔墨水表面液位控制器的声学墨水打印机
公开(公告)号：US5216451A
公开(公告)日：1993-06-01
申请号：US815002
申请日：1992-12-27
申请人： Eric G. Rawson , Scott A. Elrod , Babur B. Hadimioglu , Calvin F. Quate , Butrus T. Khuri-Yakub
发明人： Eric G. Rawson , Scott A. Elrod , Babur B. Hadimioglu , Calvin F. Quate , Butrus T. Khuri-Yakub
IPC分类号： B41J2/14
CPC分类号： B41J2/14008
摘要： The free ink surface levels of acoustic ink printers are controlled by cap structures that have substantially non-retroreflective aperture configurations. The non-retroreflective configurations of the apertures of these cap structures cause diffusive scattering or directional deflection of the reflected surface ripple waves, thereby significantly reducing the time that is required for the oscillatory perturbations, which are caused by reflection of the surface ripple waves that are generated during the droplet ejection process, to dissipate to a negligibly low amplitude in the critical local areas of the ejection sites. This, in turn, increases the droplet ejection rates at which printers having such cap structures can be operated asynchronously.
摘要翻译：声学墨水打印机的自由墨水表面水平由具有基本上非回射孔径配置的盖结构控制。这些盖结构的孔的非回射结构引起反射表面纹波的漫射散射或方向偏转，从而显着减少振荡扰动所需的时间，这是由表面波纹波的反射引起的在液滴喷射过程中产生，以在喷射位置的关键局部区域中消散到可忽略的低振幅。这又增加了具有这种帽结构的打印机可以异步操作的液滴喷射速率。

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