公开(公告)号：US5471260A

公开(公告)日：1995-11-28

申请号：US331016

申请日：1994-10-28

Applicant: David A. Luce ,  Joseph L. Zelvin

Inventor： David A. Luce ,  Joseph L. Zelvin

IPC: G05G9/047 ,  A61B3/00 ,  A61B3/10 ,  G06F3/033

CPC classification number: A61B3/0075

Abstract: The disclosure relates to a joystick for positioning a test axis of an ophthalmic instrument relative to an eye of a patient. In a preferred embodiment, the joystick includes an actuator extending therefrom and arranged to alternately engage a pair of motor control switches incident to slight rotation of the joystick in opposite directions, thereby activating a motor drive to raise and lower the test axis.

Abstract translation: 本公开涉及一种用于定位眼科仪器相对于患者眼睛的测试轴线的操纵杆。 在优选实施例中，操纵杆包括从其延伸的致动器，并被布置成交替地接合一对电动机控制开关，这些电动机控制开关入射到操纵杆的相反方向上的微小旋转，从而启动电动机驱动器以升高和降低测试轴。

公开(公告)号：US5381196A

公开(公告)日：1995-01-10

申请号：US90541

申请日：1993-07-13

Applicant: David A. Luce ,  Bernard Grolman

Inventor： David A. Luce ,  Bernard Grolman

IPC: A61B3/028 ,  A61B3/032 ,  A61B3/06 ,  A61B3/09 ,  A61B3/02

CPC classification number: A61B3/022 ,  A61B3/032 ,  A61B3/06 ,  A61B3/09

Abstract: A device for testing visual contrast sensitivity is disclosed whereby the contrast between a vectographically polarized test symbol and a reference background may be continuously varied by changing the direction of polarization of a polarization analyzer situated along the test axis. The invention is practiced by providing a chart projector or a conventional refractor with a rotatable analyzer.

Abstract translation: 公开了用于测试视觉对比敏感度的装置，通过改变位于沿测试轴的偏振分析器的偏振方向，可以连续地改变矢量极化测试符号和参考背景之间的对比度。 通过提供具有可旋转分析器的图表投影仪或常规折射器来实施本发明。

公开(公告)号：US3997863A

公开(公告)日：1976-12-14

申请号：US564753

申请日：1975-04-03

Applicant: David A. Luce

Inventor： David A. Luce

IPC: G10H1/055 ,  H01C10/28 ,  H01C9/00

CPC classification number: H01C10/28 ,  G10H1/0558 ,  Y10S84/07

Abstract: A control apparatus for determining the pitch of the sound produced by an electronic music synthesizer incorporates a conductive ribbon having a manually adjustable contact with a second conductive element, the second element comprising an elongate helically wound resistance element supported by being cemented in a groove in a base member.

Abstract translation: 用于确定由电子音乐合成器产生的声音的音调的控制装置包括具有与第二导电元件的可手动调节的触点的导电带，第二元件包括细长的螺旋缠绕的电阻元件，该元件通过胶合在凹槽中 基地会员

公开(公告)号：US3981218A

公开(公告)日：1976-09-21

申请号：US479443

申请日：1974-06-14

Applicant: David A. Luce

Inventor： David A. Luce

IPC: G10H5/00 ,  G10H1/02

CPC classification number: G10H5/002

Abstract: A separate group of function preset controls is provided for each of a plurality of individually adjustable functions, to select predetermined values for such functions or, alternatively, to allow manual adjustment thereof. A supervisory preset control is provided for controlling the operation of several different function preset controls, in accordance with an overall plan including predetermined settings for a plurality of functions. In one mode of operation of the supervisory preset control, each of the function preset controls is placed in its manually adjustable mode, so that the individual functions are all controlled by manual adjustment. In other modes of operation, each of the function preset controls is placed in one of its fixed modes, to establish a predetermined fixed combination of function settings.

Abstract translation: 为多个可单独调节的功能中的每一个提供单独的一组功能预置控制，以选择这些功能的预定值，或者替代地允许其手动调整。 根据包括多个功能的预定设置的总体方案，提供监控预设控制来控制若干不同功能预设控制的操作。 在监控预置控制的一种操作模式中，功能预置控制中的每一个都被置于其手动可调模式中，使得各个功能都通过手动调节来控制。 在其他操作模式中，每个功能预置控制被置于其固定模式之一中，以建立功能设置的预定固定组合。

公开(公告)号：US3969969A

公开(公告)日：1976-07-20

申请号：US490385

申请日：1974-07-22

Applicant: Melville Clark, Jr. ,  David A. Luce

Inventor： Melville Clark, Jr. ,  David A. Luce

IPC: G10H1/055 ,  G10H1/18 ,  G10H1/02

CPC classification number: G10H1/0558 ,  G10H1/185 ,  G10H2210/211 ,  G10H2210/401 ,  G10H2210/411 ,  G10H2230/175 ,  G10H2230/181 ,  G10H2230/191 ,  G10H2230/195 ,  G10H2230/225 ,  G10H2250/475

Abstract: A new, performer played, real time, multitonal, 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.

公开(公告)号：US3968717A

公开(公告)日：1976-07-13

申请号：US491159

申请日：1974-07-22

Applicant: Melville Clark, Jr. ,  David A. Luce

Inventor： Melville Clark, Jr. ,  David A. Luce

IPC: G10H1/18 ,  G10H1/02

CPC classification number: G10H1/188 ,  G10H2210/211 ,  G10H2210/401 ,  G10H2210/411 ,  G10H2230/175 ,  G10H2230/181 ,  G10H2230/191 ,  G10H2230/195 ,  G10H2230/225 ,  G10H2250/475

Abstract: A new, performer played, real time, multitonal, 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.

公开(公告)号：US3968716A

公开(公告)日：1976-07-13

申请号：US490386

申请日：1974-07-22

Applicant: Melville Clark, Jr. ,  David A. Luce

Inventor： Melville Clark, Jr. ,  David A. Luce

IPC: G10H1/18 ,  G10H3/00

CPC classification number: G10H1/188 ,  G10H2210/211 ,  G10H2210/401 ,  G10H2210/411 ,  G10H2230/175 ,  G10H2230/181 ,  G10H2230/185 ,  G10H2230/191 ,  G10H2230/195 ,  G10H2230/225 ,  G10H2250/475

Abstract: A new, performer played, real time, multitonal, 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.

Abstract translation: 一个新的，表演者演奏的，实时的，多人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，而不是其他忙碌与任何按下的键。 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。

公开(公告)号：US08613704B2

公开(公告)日：2013-12-24

申请号：US13013102

申请日：2011-01-25

Applicant: David A. Luce

Inventor： David A. Luce

IPC: A61B3/16

CPC classification number: A61B3/165

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090093698A1

公开(公告)日：2009-04-09

申请号：US12335566

申请日：2008-12-16

Applicant: David A. Luce

Inventor： David A. Luce

IPC: A61B3/16

CPC classification number: A61B3/165

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US6159148A

公开(公告)日：2000-12-12

申请号：US114698

申请日：1998-07-13

Applicant: David A. Luce

Inventor： David A. Luce

IPC: A61B3/16

CPC classification number: A61B3/165

Abstract: 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.

Abstract translation: 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。