-
公开(公告)号：US4305663A
公开(公告)日：1981-12-15
申请号：US125011
申请日：1980-02-27
Applicant: Charles V. Perkins , John R. Firth
Inventor： Charles V. Perkins , John R. Firth
Abstract: A dual beam spectrophotometer includes a radiation chopper, a monochrometer, and a diffraction grating moved by a stepper motor. The chopper includes a gate pulse generator which produces gate pulses G.sub.S and G.sub.R corresponding to periods during which radiation from the source passes through a sample cell and a reference cell respectively. A stepper motor drive circuit produces pulses to step the stepper motor which are synchronized with the chopping cycle by means of the G.sub.R and G.sub.S pulses. The stepper motor is arranged to step an equal number of times in each half of a chopping cycle. A further condition which is preferably satisfied is that the first pulse of a sequence should start in the opposite half of the chopping cycle from that in which the first pulse started in a previous chopping cycle. At low stepping rates the motor will step twice in one chopping cycle and then pause for several cycles before again stepping twice.
Abstract translation: 双光束分光光度计包括辐射斩光器，单色仪和由步进电机驱动的衍射光栅。 斩波器包括门脉冲发生器，其产生对应于来自源的辐射通过样本池和参考单元的周期的栅极脉冲GS和GR。 步进电机驱动电路通过GR和GS脉冲产生脉冲以步进与斩波周期同步的步进电机。 步进电机被布置成在斩波周期的每一半中相等次数。 优选满足的另一个条件是序列的第一个脉冲应该在斩波周期的相反一半开始，其中第一个脉冲在先前的斩波周期中开始。 在低步进率下，电机将在一个斩波周期中步进两次，然后暂停几个周期，然后再次步进两次。
-
公开(公告)号：US4178099A
公开(公告)日：1979-12-11
申请号：US846646
申请日：1977-10-31
Applicant: Lowell F. Williams
Inventor： Lowell F. Williams
CPC classification number: G02B26/108 , G01J3/06 , G01S3/789 , G02B5/09
Abstract: A wide field of view is scanned to determine spectral and positional infotion of a point source of optical radiation. The wide field of view is optically scanned by a scanner having an instantaneous narrow field of view to sequentially direct radiation from successive scanned portions of the field onto a detector included in an image plane of radiation. An optical dispersion means for the radiation is provided in a first optical path that includes the scanning means and the detector. A second optical path between the source and detector includes the scanning means, but does not include the dispersion means. The dispersion means and the scanning means cause a convolution of spectral energy from the source in the image plane, resulting in a displacement of the relative occurrence times, during a scan, of a wavelength of the radiation as it impinges on the image plane via the two optical paths. A processing circuit measures the displacement, amplitude and spectral content to provide a visual indication of the angular position of the radiation source. The use of two optical channels also provides a simplified cross correlation system for comparison of spectral sources with respect to a reference.
Abstract translation: 扫描宽视野以确定光辐射点光源的光谱和位置信息。 通过具有瞬时窄视野的扫描仪对宽视场进行光学扫描，以将来自场的连续扫描部分的辐射顺序地引导到包括在辐射图像平面中的检测器。 在包括扫描装置和检测器的第一光路中提供用于辐射的光学分散装置。 源和检测器之间的第二光路包括扫描装置，但不包括色散装置。 分散装置和扫描装置引起来自图像平面中的光谱能量的卷积，导致在扫描期间当辐射的波长经由图像平面撞击在图像平面上时的相对发生时间的位移 两条光路。 处理电路测量位移，幅度和光谱含量以提供辐射源的角位置的视觉指示。 使用两个光通道还提供了一个简化的互相关系统，用于比较光源与参考光源。
-
公开(公告)号：US4095897A
公开(公告)日：1978-06-20
申请号：US726838
申请日：1976-09-27
Applicant: Yoshio Tsunazawa , Masanao Nishida
Inventor： Yoshio Tsunazawa , Masanao Nishida
CPC classification number: G01J3/06
Abstract: A wavelength driving device for use in monochromators, wherein at least two wavelength driving cams of different peripheral contours are provided, which alternatively operate for different portions of the whole wavelength range to be covered by the device. The device is also provided with means which enables easy correction of deviations of dispersion of the prism from the design value.
Abstract translation: 一种用于单色仪的波长驱动装置，其中提供了不同外围轮廓的至少两个波长驱动凸轮，其可替代地操作用于由装置覆盖的整个波长范围的不同部分。 该装置还具有能够容易地校正棱镜的色散偏离设计值的装置。
-
公开(公告)号：US4047818A
公开(公告)日：1977-09-13
申请号：US626440
申请日：1975-10-28
Applicant: Alfred Steinbatz
Inventor： Alfred Steinbatz
CPC classification number: G01J3/06
Abstract: An adjustable filter regulator for a microspectrophotometer including adjustment means connected to a scale for controlling the setting of the interference filter wherein the filter is moveably connected to a servomotor; follower circuit, differential amplifier, and signal transmitter.
Abstract translation: 一种用于显微分光光度计的可调滤光器调节器，包括连接到刻度尺的调节装置，用于控制干涉滤光器的设置，其中过滤器可移动地连接到伺服电动机; 跟随器电路，差分放大器和信号发射器。
-
公开(公告)号：US4003657A
公开(公告)日：1977-01-18
申请号：US565706
申请日：1975-04-07
Applicant: Rostislav Sovicka
Inventor： Rostislav Sovicka
CPC classification number: G02B26/0808 , G01J3/06 , G02B7/004
Abstract: The position of a diffraction grating in a spectral device is controlled by an arm fixed to a rotatable table supporting the grating. The arm rests against a cam receiving a straight line motion in a direction parallel to the light beam impinging on the grating and passing beyond the rotation axis of the rotatable table.
Abstract translation: 衍射光栅在光谱器件中的位置由固定到支撑光栅的可旋转台的臂来控制。 手臂靠在与平行于光束入射在光栅上并超过可旋转台的旋转轴线的方向上接受直线运动的凸轮。
-
Patent Agency Ranking
公开(公告)号：US4000946A
公开(公告)日：1977-01-04
申请号：US633512
申请日：1975-11-20
Applicant: Allan S. Way , Stanley L. Pratt
Inventor： Allan S. Way , Stanley L. Pratt
CPC classification number: G01J3/06
Abstract: A tracking accuracy control system for a spectrophotometer utilizing stepper motors for controlling the wavelength drive and chart drive system. An exact ratio between the wavelength drive motor and chart drive motor is maintained under variable speed conditions by utilizing an error signal which normally operates the reference beam attenuator, this error signal being transmitted through an absolute value circuit to produce a voltage whose magnitude is the absolute value of the error signal. This absolute value is then transmitted through a fast attack, slow release hold-over circuit to control a voltage controlled oscillator in such a way as to reduce wavelength scan speed in an amount proportional to the error while simultaneously controlling chart speed in an exact ratio to the scan speed. The output of the voltage controlled oscillator is a pulse train having a frequency proportional to the magnitude of the absolute value of error signal.
Abstract translation: 用于分光光度计的跟踪精度控制系统，利用步进电机控制波长驱动和图表驱动系统。 通过利用通常操作参考光束衰减器的误差信号，波长驱动电机和图表驱动电机之间的精确比例保持在变速条件下，该误差信号通过绝对值电路传输，以产生幅度为绝对值的电压 误差信号的值。 然后通过快速攻击，缓慢释放保持电路传输该绝对值，以控制压控振荡器，以便以与误差成比例的量减少波长扫描速度，同时以精确的比率控制图表速度 扫描速度。 压控振荡器的输出是具有与误差信号的绝对值的大小成比例的频率的脉冲串。
-
公开(公告)号：US3917407A
公开(公告)日：1975-11-04
申请号：US41411073
申请日：1973-11-08
Applicant: PYE LTD
Inventor： NEWSTEAD RONALD ALFRED
CPC classification number: G01N21/3103 , G01J3/12
Abstract: Apparatus for automatically fine tuning a monochromator wherein an electrical oscillator drives an electromechanical transducer which varies the monochromator wave length and a detector responsive to the radiation beam from the monochromator controls a D.C. amplifier which servo controls the bias to the transducer.
Abstract translation: 用于自动微调单色器的设备，其中电振荡器驱动改变单色仪波长的机电换能器，并且响应于来自单色仪的辐射束的检测器控制一个D.C.放大器，其将伺服控制偏置到换能器。
-
公开(公告)号：US3868499A
公开(公告)日：1975-02-25
申请号：US45458974
申请日：1974-03-25
Applicant: GCA CORP
Inventor： AARONSON CHARLES D , RENDINA JOHN F , FANCY ROBERT D
CPC classification number: G01J3/06
Abstract: In the spectrometric apparatus disclosed herein, a monochromator provided with a stepping motor drive is controlled in a sequence of scanning operations by a memory which can be loaded by means of simple punch cards. The memory holds a plurality of multi-bit digital words, each word comprising a first portion which can designate a rate of scan and a second portion which can designate a destination value, stated in terms of wavelength. Each stored digital word also includes a plurality of control bits which affect the operation of the spectrometric apparatus and which can also be used for controlling apparatus external to the monochromator, e.g. a strip chart recorder.
Abstract translation: 在本文公开的光谱测量装置中，设置有步进电机驱动器的单色仪以可通过简单的穿孔卡加载的存储器的扫描操作的顺序来控制。 存储器保持多个多位数字字，每个字包括可以指定扫描速率的第一部分和可以指定以波长表示的目的地值的第二部分。 每个存储的数字字还包括影响光谱测量装置的操作的多个控制位，并且还可以用于控制单色仪外部的装置，例如， 条形图记录仪。
-
公开(公告)号：US3765742A
公开(公告)日：1973-10-16
申请号：US3765742D
申请日：1972-06-07
Applicant: AGA AB
Inventor： WALLES S
CPC classification number: G01J3/06 , G02B26/0816 , G02B27/147 , H04N3/08
Abstract: The present invention relates to a device to produce, starting from a slit scanned in its transverse direction, alternately two slits scanned at a certain angle to each other in their transverse directions in the same image plane. Starting with the slit scanned in its transverse direction, the device in accordance with the invention produces two slits scanned at a certain angle to each other in their transverse directions in the same image plane. This slit scanned in its transverse direction may be generated, for example, by means of a device comprising a straight, equilateral, transmitting polygonal cylinder placed behind a stationary slit which is arranged to rotate about its axis of symmetry parallel to the longitudinal direction of the slit. The two slits scanning in the same image plane at a certain angle to each other in their transverse directions are generated by means of the device built in accordance with the principles of the present invention by dividing the light alternately in time between two alternative ray paths. The device including a rotating glass disk with reflecting areas being used for the division and the ray paths have such optical characteristics that the timing of the scanning slits is not affected by wobble in the bearings of the rotating glass disk.
Abstract translation: 本发明涉及一种从沿其横向扫描的狭缝开始的两个切口，在相同的图像平面中以横向彼此以一定的角度交替地产生的装置。 从沿其横向扫描的狭缝开始，根据本发明的装置产生在相同图像平面中沿其横向以彼此以一定角度扫描的两个狭缝。 该狭缝在其横向上扫描可以例如通过包括设置在静止狭缝后面的直的等边透射多边形圆柱的装置来产生，该固定狭缝布置成围绕其平行于 狭缝
-
90.发明授权
公开(公告)号：US3614233A
公开(公告)日：1971-10-19
申请号：US3614233D
申请日：1970-05-08
Applicant: SAAB AB
Inventor： ASLUND NILS ROBERT DAHR
CPC classification number: G01J3/06 , G02B7/1821 , G02B26/10
Abstract: An optical apparatus for displaying spectral images is disclosed, the device including two reflecting planes fixed at right angles to each other but displaceable with respect to an image plane to permit a scanning of an optical image. Both reflecting planes are at a 45* angle with the image plane, and the line of intersection of the two reflecting planes oscillates in a direction which is transverse to the line of intersection of the reflecting planes, whereby the image is scanned sinusoidally past an opening in the image plane. A light-sensitive element behind the opening transforms the light into an electrical signal which corresponds in amplitude to the light intensity and which can be displayed on an oscilloscope. A sensing means tracks the swing movement, generating a signal which may be used as one coordinate axis of the oscilloscope display. A phase correction network is located between the sensing means and the oscilloscope so that the correct phase relationship between the oscillating swing and the display may be obtained.
-
-
-
-
-
-
-
-
-
Search Results
532
records
(took 0.058 seconds)
