公开(公告)号：US07292387B2

公开(公告)日：2007-11-06

申请号：US11332555

申请日：2006-01-12

Applicant: Hanna J. Hoffman ,  David S. Spence ,  Alan B. Petersen ,  James D. Kafka

Inventor： Hanna J. Hoffman ,  David S. Spence ,  Alan B. Petersen ,  James D. Kafka

IPC: G02F1/35 ,  G02F2/02

CPC classification number: G02F1/35 ,  G02F1/3534 ,  G02F1/3544

Abstract: Frequency conversion methods are taught wherein non-collinear phase matching configurations may be implemented in non-linear crystals used in three wave mixing processes such that the frequency conversion efficiency is enhanced through walk-off compensation while also maximizing conversion efficiency. The harmonic conversion techniques are especially applicable to sum frequency process, and in particular to third harmonic generation.

Abstract translation: 提出了变频方法，其中可以在三波混频处理中使用的非线性晶体中实现非共线相位匹配配置，使得通过离散补偿增强频率转换效率，同时最大化转换效率。 谐波转换技术特别适用于和频处理，特别适用于三次谐波生成。

公开(公告)号：US07003011B2

公开(公告)日：2006-02-21

申请号：US10233140

申请日：2002-08-30

Applicant: James D. Kafka ,  Dirk Sutter

Inventor： James D. Kafka ,  Dirk Sutter

IPC: H01S3/09

CPC classification number: H01S3/0627 ,  H01S3/0604 ,  H01S3/0621 ,  H01S3/094057 ,  H01S3/09415 ,  H01S3/1688

Abstract: An optical system has a high power diode pump source and a thin disk gain media. An optical coupler is positioned between the diode pump source and the thin disk gain media. The optical coupler produces a beam with a large numerical aperture incident on the thin disk gain media.

Abstract translation: 光学系统具有高功率二极管泵浦源和薄盘增益介质。 光耦合器位于二极管泵浦源和薄盘增益介质之间。 光耦合器产生入射到薄盘增益介质上的具有大数值孔径的光束。

公开(公告)号：US06853655B2

公开(公告)日：2005-02-08

申请号：US10301801

申请日：2002-11-20

Applicant: Kevin Holsinger

Inventor： Kevin Holsinger

IPC: H01S3/08 ,  H01S3/098 ,  H01S3/109 ,  H01S3/13 ,  H01S3/131

CPC classification number: H01S3/13 ,  H01S3/094038 ,  H01S3/1022 ,  H01S3/1305 ,  H01S3/1312

Abstract: A laser system includes a pump source that produces a first output. The pump source has a feedback loop with a first summing junction and a first command that has step quantization or digitized set point. An output device is coupled to the pump source to receive the first output and produce a second output. A feedback loop is coupled to the first summing junction. The feedback loop includes a second summing junction coupled to at least a portion of the second output. The second summing junction receives a second command and provides an input to the first summing junction. The feedback loop reduces the step quantization from the first output to provide finer control step of a property of the second output.

Abstract translation: 激光系统包括产生第一输出的泵浦源。 泵浦源具有具有第一求和点和具有步长量化或数字化设定点的第一命令的反馈回路。 输出装置耦合到泵浦源以接收第一输出并产生第二输出。 反馈回路耦合到第一求和接点。 反馈回路包括耦合到第二输出的至少一部分的第二求和结。 第二求和点接收第二命令并向第一求和结点提供输入。 反馈环路从第一输出减少步长量化，以提供第二输出的特性的更精细的控制步骤。

公开(公告)号：US5179270A

公开(公告)日：1993-01-12

申请号：US348861

申请日：1989-05-08

Applicant: Andrew P. Taussig ,  Nicholas N. Tabet ,  Blake L. Isaacs

Inventor： Andrew P. Taussig ,  Nicholas N. Tabet ,  Blake L. Isaacs

IPC: G06K7/10 ,  G06K17/00 ,  G07G1/00

CPC classification number: G06K7/10851 ,  G06K17/0022 ,  G07G1/0045

Abstract: An optical scanner for use at a checkout counter determines information relating to products to be purchased, including coded label data. The scanner supplies the information to a cash register system. The scanner includes a scanner controller for reading coded labels on the products. The scanner further includes an interface circuit, mounted in said scanner and receiving power therefrom, for providing coded label data to said cash register system.

公开(公告)号：US5055743A

公开(公告)日：1991-10-08

申请号：US346469

申请日：1989-05-02

Applicant: John P. Ekstrand

Inventor： John P. Ekstrand

IPC: H01J1/20 ,  H01J3/02 ,  H01S3/038 ,  H05B6/02 ,  H05H1/46

CPC classification number: H05H1/46 ,  H01J1/20 ,  H01J3/025 ,  H01S3/038 ,  H05B6/02 ,  H01S3/0382

Abstract: An improvement for a vacuum tube or a plasma tube comprises a cathode loop formed of a material suitable for induction heating. A support structure mounted inside the vacuum tube supports the cathode loop at a cathode position. A power supply mounted outside the vacuum tube includes an induction coil wrapped around the tube near the cathode position and generates an alternating electromagnetic field at the cathode position to induce heat in the cathode loop so that electrons are released into the vacuum tube. Finally, a DC bias is applied to the cathode through the support structure. The improved plasma tube with an induction heated cathode is particularly useful for an ion laser gain medium.

Abstract translation: 真空管或等离子体管的改进包括由适于感应加热的材料形成的阴极环。 安装在真空管内的支撑结构在阴极位置支撑阴极环。 安装在真空管外部的电源包括在阴极位置附近围绕管缠绕的感应线圈，并在阴极位置产生交变电磁场，以在阴极环中引起热量，使得电子释放到真空管中。 最后，通过支撑结构将直流偏压施加到阴极。 具有感应加热阴极的改进的等离子体管对离子激光增益介质特别有用。

公开(公告)号：US5026157A

公开(公告)日：1991-06-25

申请号：US380611

申请日：1989-07-14

Applicant: Peter S. Winckler

Inventor： Peter S. Winckler

IPC: G01C15/00

CPC classification number: G01C15/002

Abstract: Motion damping apparatus is provided for use in a light beam projector including a light beam and a pendulous compensator adapted to movably support a mirror for deflecting the light beam to compensate for tilting of the projector. The apparatus comprises at least one motion damping plate formed of an electrically conducting material and coupled to the pendulous compensator. Magnets are positioned adjacent the damping plate for generating a magnetic field through which the plate passes as the result of motion of the pendulous compensator such that the motion is damped by the interaction of magnetic fields produced by the magnets and by eddy currents generated in the plate by its movement within a magnetic field. The motion damping plate preferably is curvilinear and coupled to the pendulous compensator to move in substantial conformity with a corresponding curvilinear plane defined by the movement of the pendulous compensator. In this way, the plate can be closely spaced to the magnets for efficient damping operation with the spacing being substantially maintained without contact between the plate and the magnets throughout the operating range of the pendulous compensator.

Abstract translation: 运动阻尼装置被提供用于包括光束和下摆补偿器的光束投影仪，其适于可移动地支撑反射镜以偏转光束以补偿投影仪的倾斜。 该装置包括由导电材料形成并耦合到下摆补偿器的至少一个运动阻尼板。 磁铁位于阻尼板附近，用于产生磁场，作为下摆补偿器运动的结果，板通过该磁场，使得运动受到由磁体产生的磁场和由板产生的涡流相互作用而被阻尼 通过其在磁场内的移动。 运动阻尼板优选地是曲线的并且耦合到下摆补偿器以基本上与由下摆补偿器的运动限定的相应曲线平面移动。 以这种方式，板可以与磁体紧密地间隔开以有效地进行阻尼操作，其间隔基本上保持在板和磁体之间，在整个减震补偿器的整个工作范围内都不接触。

公开(公告)号：US5021646A

公开(公告)日：1991-06-04

申请号：US470287

申请日：1990-01-25

Applicant: Scot R. Weinberger ,  Thomas W. Hoppe

Inventor： Scot R. Weinberger ,  Thomas W. Hoppe

IPC: G01N27/447

CPC classification number: G01N27/44721 ,  G01N27/44708

Abstract: An electrophoresis instrument includes a capillary tube mounted in an air cooled cartridge. The cartridge also supports a spherical lens which is part of the optical detection apparatus. The cartridge rests in a manifold which includes the sample and buffer reservoirs. The temperature of the capillary tube is controlled by measuring the electrical resistance of the capillary tube during the electrophoresis process and then cooling or heating the cartridge by circulating temperature controlled air over the tube. The optical path associated with the instrument is a fiber optic bundle bifurcated close to dual detectors into a reference arm and a sample arm so as to provide similar reference and sample optical paths. The instrument may be used for controlling temperature in gradient electrophoresis and detecting neutral markers in determining electro-osmotic flow.

Abstract translation: 电泳仪包括安装在空气冷却筒中的毛细管。 墨盒还支持作为光学检测装置的一部分的球面透镜。 墨盒位于包含样品和缓冲液储存器的歧管中。 通过在电泳过程中测量毛细管的电阻，然后通过将温度受控的空气循环通过管冷却或加热来控制毛细管的温度。 与仪器相关联的光路是将近双重检测器分叉到参考臂和样品臂中的光纤束，以便提供相似的参考和样品光路。 该仪器可用于控制梯度电泳中的温度和检测中性标记物以确定电渗流。

公开(公告)号：US5005329A

公开(公告)日：1991-04-09

申请号：US312696

申请日：1989-02-17

Applicant: Theodore H. Schorr

Inventor： Theodore H. Schorr

IPC: G06K7/10 ,  G07G1/00

CPC classification number: G06K7/10871 ,  G07G1/0045

Abstract: A soft compliant seal is attached to either an anchored or a loose reinforcement ring to provide a non-hermetic seal against liquids or particulates in order to maintain a space between two windows substantially free of all foreign matter.

Abstract translation: 柔性柔顺密封件连接到锚固或松散的加强环上以提供对液体或微粒的非气密密封，以便保持基本上不含所有异物的两个窗之间的空间。

公开(公告)号：US5001716A

公开(公告)日：1991-03-19

申请号：US500576

申请日：1990-03-28

Applicant: Bertram C. Johnson ,  Richard L. Herbst ,  Glen R. Blevins

Inventor： Bertram C. Johnson ,  Richard L. Herbst ,  Glen R. Blevins

IPC: H01S3/115

CPC classification number: H01S3/115

Abstract: A Q-switch for a laser having a resonant cavity including an output coupler, a gain medium and a retro-reflecting mirror is mounted in the resonant cavity between the gain medium and the retro-reflecting mirror. The Q-switch comprises a polarizer and a phase retarding element (such as a Pockels cell) which includes a birefringent substrate for inducing a controllable phase retardation in the cavity mode in response to an applied electric field. A tiltable mount supports the phase retarding element so that the lasing axis lies essentially in a plane of the crystallographic axis 45.degree. from the direction of polarization, and lies at an adjustable angle relative to the crystallographic axis. A control circuit supplies an applied electric field within the substrate having a first magnitude in a first state and a second magnitude in a seocnd state. In the first state, the phase retarding element induces 90.degree. rotation in a round trip for the cavity mode. In the second state, the phase retarding element induces effectively no rotation (0.degree. or 180.degree.) for the cavity mode. Therefore, the resonant cavity achieves a high extinction ratio by proper adjustment of the adjustable angle.

Abstract translation: 具有包括输出耦合器，增益介质和回射反射镜的谐振腔的激光器的Q开关安装在增益介质和后向反射镜之间的谐振腔中。 Q开关包括偏振器和包括双折射基底的相位延迟元件（例如普克尔斯单元），用于响应于所施加的电场在空腔模式中诱发可控相位延迟。 可倾斜安装座支撑相位延迟元件，使得激光轴基本上位于离极化方向45°的结晶轴的平面中，并且相对于结晶轴位于可调节的角度。 控制电路在第一状态下具有第一幅度的第一幅度和第二幅度的第一幅度提供衬底内施加的电场。 在第一状态下，相位延迟元件在腔模式的往返中引起90度旋转。 在第二状态下，相位延迟元件对于空腔模式不会有效地引起旋转（0°或180°）。 因此，谐振腔通过可调节角度的推进调整实现了高消光比。

公开(公告)号：US5001406A

公开(公告)日：1991-03-19

申请号：US260008

申请日：1988-10-19

Applicant: Donald S. Peterson

Inventor： Donald S. Peterson

IPC: H02P6/06

CPC classification number: H02P6/06

Abstract: The operating speed of a brushless DC motor is maintained at a desired speed by controlling the voltage level of power supplied to the motor. The motor includes a rotor carrying permanent magnets, cooperating electromagnets contained in a stationary armature and Hall effect devices for sensing the operating speed and position of the rotor. Circuitry connected to the Hall effect devices generates angular sector signals corresponding to activation periods or periods during which power is applied to the electromagnets to operate the motor. A processor connected to one of the Hall effect devices monitors the operating speed of the motor and generates an error signal representative of the difference between the operating speed of the motor and a desired reference speed. A power supply is controlled by the processor to generate power having a voltage level corresponding to the error signal. Switching transistors are connected between the electromagnets and the circuitry for generating the angular sector signals to apply power from the power supply to each of the electromagnets during the entirety of its corresponding activation period to maintain the motor speed at the desired reference speed.

Abstract translation: 通过控制提供给电动机的电力的电压电平，将无刷直流电动机的运行速度保持在期望的速度。 电动机包括承载永磁体的转子，包含在固定电枢中的配合电磁体和霍尔效应装置，用于感测转子的运行速度和位置。 连接到霍尔效应器件的电路产生对应于激活周期或时间段的角扇区信号，在该周期或周期期间，向电磁体施加电力以操作电动机。 连接到霍尔效应装置中的一个的处理器监视电动机的运行速度，并产生代表电动机的运行速度与期望的参考速度之差的误差信号。 电源由处理器控制以产生具有与误差信号相对应的电压电平的电力。 开关晶体管连接在电磁体和用于产生角扇区信号的电路之间，用于在整个相应的激活周期期间将功率从电源施加到每个电磁体，以将电动机速度维持在期望的参考速度。