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31. 发明授权

US08613704B2 Subsystems and methods for non-contact corneal deformation 有权
标题翻译：非接触性角膜变形的子系统和方法
公开(公告)号：US08613704B2
公开(公告)日：2013-12-24
申请号：US13013102
申请日：2011-01-25
申请人： David A. Luce
发明人： David A. Luce
IPC分类号： A61B3/16
CPC分类号： A61B3/165
摘要： An ophthalmic instrument that discharges a fluid pulse to deform the cornea of a test subject is improved by reducing the working distance between a nosepiece or a discharge tube from which the fluid pulse is discharged and the eye of the test subject. The invention improves measurement repeatability and patient comfort.
摘要翻译：通过减少流体脉冲被排出的鼻梁或放电管与受试者的眼睛之间的工作距离，可以改善排出流体脉冲以使测试对象的角膜变形的眼科仪器。本发明提高了测量重复性和患者舒适度。

32. 发明申请

US20090093698A1 Method And Apparatus For Determining True Intraocular Pressure 有权
标题翻译：用于确定真实眼内压的方法和装置
公开(公告)号：US20090093698A1
公开(公告)日：2009-04-09
申请号：US12335566
申请日：2008-12-16
申请人： David A. Luce
发明人： David A. Luce
IPC分类号： A61B3/16
CPC分类号： A61B3/165
摘要： A method and apparatus for measuring intraocular pressure of an eye use an empirically derived function wherein an inward applanation pressure P1 and an outward applanation pressure P2 obtained during a corneal deformation cycle caused by a fluid pulse are separately weighted so as to minimize cornea-related influence on the intraocular pressure value calculated by the function. In one embodiment, the function is optimized, at least in part, to minimize change in calculated IOP between measurements made before surgical alteration of the cornea and measurements made after surgical alteration of the cornea.
摘要翻译：用于测量眼睛眼压的方法和装置使用经验导出的功能，其中在由流体脉冲引起的角膜变形循环期间获得的向内压迫压力P1和向外压迫压力P2被分别加权，以便最小化与角膜相关的影响对由功能计算出的眼内压值。在一个实施例中，该功能被优化，至少部分地最小化在角膜手术改变之前进行的测量和角膜手术改变后进行的测量之间的计算IOP的变化。

33. 发明授权

US6159148A Non-contact tonometer having non-linear pressure ramp 失效
标题翻译：非接触式眼压计具有非线性压力斜坡
公开(公告)号：US6159148A
公开(公告)日：2000-12-12
申请号：US114698
申请日：1998-07-13
申请人： David A. Luce
发明人： David A. Luce
IPC分类号： A61B3/16
CPC分类号： A61B3/165
摘要： A non-contact tonometer having a fluid pulse generating system for causing corneal applanation is improved by changing the pressure versus time characteristics of the fluid pulse from a linearly increasing relationship of the prior art to a non-linearly increasing relationship which reduces the impulse energy delivered to the eye during testing for purposes of patient comfort. In a preferred embodiment, an automatically driven piston for producing an air pulse is provided with a linearly increasing current source for driving the piston mechanism, whereby the pressure ramp of the air pulse increases as a squared function of time to reduce impulse energy delivered to the eye.
摘要翻译：具有用于引起角膜压扁的流体脉冲产生系统的非接触式眼压计通过将流体脉冲的压力对时间特性从现有技术的线性增加关系改变为非线性增加关系而改善，这降低了递送的脉冲能量在测试期间为了患者舒适的目的。在优选实施例中，用于产生空气脉冲的自动驱动的活塞设置有用于驱动活塞机构的线性增加的电流源，由此空气脉冲的压力斜坡随时间的平方函数而增加，以减少传递到眼。

34. 发明授权

US5984476A Ophthalmic instrument having self-calibrating optical system 失效
标题翻译：具有自校准光学系统的眼科仪器
公开(公告)号：US5984476A
公开(公告)日：1999-11-16
申请号：US233881
申请日：1999-01-20
申请人： David A. Luce , Douglas H. Hoover
发明人： David A. Luce , Douglas H. Hoover
IPC分类号： A61B3/10 , A61B3/103
CPC分类号： A61B3/103
摘要： An objective refractor, having light source and detection paths intersecting at a beamnsplitter uses light normally lost during testing of an eye to self-calibrate for optical errors introduced during production of the instrument.
摘要翻译：具有在光束分离器处相交的光源和检测路径的客观折射器使用在眼睛测试期间通常损失的光，以对于在仪器生产期间引入的光学误差进行自校准。

35. 发明授权

US5825457A Keratometric illumination system 失效
标题翻译：角膜照明系统
公开(公告)号：US5825457A
公开(公告)日：1998-10-20
申请号：US867622
申请日：1997-06-02
申请人： David A. Luce , Joseph L. Zelvin
发明人： David A. Luce , Joseph L. Zelvin
IPC分类号： A61B3/107 , A61B3/10
CPC分类号： A61B3/107
摘要： A keratometer includes illuminating optics centered along a common measurement axis in alignment with a patient's cornea and with area detection means of the keratometer. A conical reflector is positioned with its apex facing a source of collimated light, such that light incident upon the conical reflector is divided into rays expanding radially outward from the measurement axis. A frusto-conical reflector surrounds the conical reflector to receive the radially expanding rays and redirect them along the measurement axis as an annulus of light large enough to pass around the area detector to a mire ring occluder and refractor which pass a refined converging annulus of light to the cornea.
摘要翻译：角膜曲率计包括沿着与患者角膜对准的公共测量轴线的中心的照明光学器件以及角膜曲率计的区域检测装置。圆锥形反射器被定位成其顶点面向准直光源，使得入射到锥形反射器上的光被分成从测量轴径向向外扩展的光线。锥形反射器围绕圆锥形反射器，以接收径向扩张的光线并将其沿着测量轴线重新定向，作为足够大的光环，以便将区域检测器通过到通过光纤环封闭器和折射器，其通过精细的会聚光环到角膜

36. 发明授权

US5587748A Joystick override control for an ophthalmic instrument 失效
标题翻译：用于眼科仪器的操纵杆超驰控制
公开(公告)号：US5587748A
公开(公告)日：1996-12-24
申请号：US331137
申请日：1994-10-28
申请人： David A. Luce , Donald E. Miller
发明人： David A. Luce , Donald E. Miller
IPC分类号： A61B3/00 , A61B3/10 , A61B3/14 , A61B3/15 , A61B3/16
CPC分类号： A61B3/145 , A61B3/0075 , A61B3/152
摘要： An alignment override control for effecting automatic vertical alignment of a test axis of an ophthalmic instrument with the center of an eye is disclosed. The test axis is associated with optical alignment means of the instrument vertically movable by an elevation motor controlled by a motor drive. A joystick and a pair of directional switches are connected to the motor drive for manual positioning of the test axis. When the eye comes within a field of view defined by the optical means, the override control disconnects the switches and automatically signals the elevation motor to effect automatic alignment using signal information originating from the optical means.
摘要翻译：公开了一种用于实现眼科仪器的测试轴与眼睛中心的自动垂直对准的对准覆盖控制。测试轴与仪器的光学对准装置相关联，可通过马达驱动器控制的升降马达垂直移动。操纵杆和一对定向开关连接到电机驱动器，用于手动定位测试轴。当眼睛进入由光学装置限定的视野内时，超控控制断开开关并且自动地向升降电机发出信号，以使用来自光学装置的信号信息进行自动对准。

37. 发明授权

US3991645A Electronic musical instrument with exponential keyboard and voltage controlled oscillator 失效
标题翻译：具有指定键盘和电压控制振荡器的电子音乐仪器
公开(公告)号：US3991645A
公开(公告)日：1976-11-16
申请号：US479444
申请日：1975-06-14
申请人： David A. Luce
发明人： David A. Luce
IPC分类号： G10H5/00 , G10H1/00 , G10H5/04
CPC分类号： G10H5/002 , Y10S84/08 , Y10S84/18 , Y10S84/20
摘要： An electronic musical instrument includes an oscillator for generating a signal at a frequency corresponding to that associated with a depressed key of the keyboard. The key selects a control voltage, from an exponential voltage divider, for controlling the frequency of a voltage controlled oscillator, which produces a frequency which is directly proportional to the control voltage and inversely proportional to a reference voltage. The reference voltage compensates for variations in the level of the supply voltage, so that the oscillator frequency is independent of the supply voltage.

38. 发明授权

US3974461A Wide dynamic range voltage controlled filter for electronic musical instruments 失效
标题翻译：用于电子乐器的宽动态范围电压控制滤波器
公开(公告)号：US3974461A
公开(公告)日：1976-08-10
申请号：US479487
申请日：1974-06-14
申请人： David A. Luce
发明人： David A. Luce
IPC分类号： G10H1/053 , G10H1/14 , H03G5/02 , H03H11/04 , G10H1/04 , H03H7/10
CPC分类号： G10H1/14 , Y10S84/09
摘要： A voltage controlled filter for an electronic synthesizer incorporates a plurality of individual voltage controlled filter stages connected in cascade with a variable feedback interconnecting the input and output stages. Each of the stages is controlled by application of a series of pulses, with the period between successive pulses determining the cutoff frequency of the filter. Application of pulses to the filter stages at different pulse repetition rates changes the cutoff frequency of the filter and modifies the relative amplitudes of different frequency components of an audio signal to be passed by the filter. The filter is suited for use with high level signals and provides an extremely wide dynamic range through a very high signal-to-noise ratio.
摘要翻译：用于电子合成器的电压控制滤波器包括与互连输入和输出级的可变反馈级联连接的多个单独的压控滤波器级。通过施加一系列脉冲来控制每个级，其中连续脉冲之间的周期确定滤波器的截止频率。以不同的脉冲重复率将脉冲施加到滤波器级改变滤波器的截止频率并且修改要由滤波器传递的音频信号的不同频率分量的相对幅度。该滤波器适用于高电平信号，并通过非常高的信噪比提供极宽的动态范围。

39. 发明授权

US3969968A Musical instrument with means for scanning keys 失效
标题翻译：用于扫描钥匙的乐器的乐器
公开(公告)号：US3969968A
公开(公告)日：1976-07-20
申请号：US491160
申请日：1974-07-22
申请人： Melville Clark, Jr. , David A. Luce
发明人： Melville Clark, Jr. , David A. Luce
IPC分类号： G10H1/18 , G10H1/00
CPC分类号： G10H1/185 , G10H2210/211 , G10H2210/401 , G10H2210/411 , G10H2230/175 , G10H2230/181 , G10H2230/185 , G10H2230/191 , G10H2230/195 , G10H2230/225 , G10H2250/475
摘要： A new, performer played, real time, multitional, multimbral musical instrument consists of speed and force sensitive keys in which time domain multiplexing is used to find and associate one and only one tone generator, not otherwise busy, with any key that is depressed. The sound generator disclosed can provide very realistic simulations of the flute, oboe, trumpet, French horn, trombone through the provision of various types of modulations in amplitude and frequency of the various partials, as is characteristic of each instrument simulated, and filtered noise. Glissandi are provided from one note to another and are controlled from the pair of keys involved by the relative pressure with which they are depressed. For the nonpercussive tonalities, the speed with which a key is depressed, which is determined by differentiating the force, may be used to cause the attack transient to behave in a manner very characteristic of the instrument being simulated. The force with which a key is depressed is determined from the rate of rise of the potential across a capacitive keying system excited through a resistor. Percussive sound generators are provided also; the intensity of the notes generated by these generators is determined by the speed with which the associated key is depressed. The force with which the associated key is depressed can be used to determine the rate of automatic repetition of the note. The speed with which a key is depressed can also be used for nonpercussive instruments to alter the character of the attack transient.
摘要翻译：一个新的，表演者演奏的，实时的，多时间的多重乐器包括速度和力敏感键，其中使用时域复用来发现和关联一个和唯一一个音调发生器，而不是以其他方式忙碌与任何被按下的键。公开的声发生器可以通过提供各种偏差的幅度和频率的各种类型的调制来提供对长笛，双簧管，喇叭，法国号，长号的非常逼真的模拟，如模拟的每个乐器的特征和滤波的噪声。 Glissandi从一个音符提供给另一个音符，并且由相关压力所涉及的一对键控制，并且它们被压下。对于非敲击性色调，可以使用通过区分力来确定键被按压的速度，以使得攻击瞬态以正在被模拟的仪器的非常特征的方式表现。键被按下的力由电阻通过电阻激励的电容键控系统的电位上升率确定。还提供冲击声发生器; 这些发生器产生的音符的强度由相关键被按下的速度决定。关联键被按下的力可用于确定音符的自动重复速率。按键的速度也可以用于非打击乐器来改变攻击瞬态的特征。

40. 发明授权

US3943456A Signal generator for electronic musical instrument, employing variable rate integrator 失效
标题翻译：电子乐器信号发生器，采用可变速率积分器
公开(公告)号：US3943456A
公开(公告)日：1976-03-09
申请号：US479486
申请日：1974-06-14
申请人： David A. Luce
发明人： David A. Luce
IPC分类号： G10H5/00 , G10H1/043 , H03K4/50 , H03K4/90 , G10H1/00 , G06G7/18 , H03K4/10
CPC分类号： G10H1/043
摘要： An electronic musical instrument incorporates apparatus for producing, on either a triggered or a repetitive basis, a wave form which is employed to produce a variety of musical sounds upon being connected to a loudspeaker. The generator is provided with means for independently modifying the wave shape and frequency of a repetitive signal, each without changing the other.
摘要翻译：电子乐器包括用于在触发或重复基础上产生在连接到扬声器时用于产生各种音乐声音的波形的装置。该发生器具有用于独立地修改重复信号的波形和频率的装置，而不改变另一个信号。

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