公开(公告)号：US4180327A

公开(公告)日：1979-12-25

申请号：US843790

申请日：1977-10-20

Applicant: Yoshio Maeda ,  Koichi Matsumoto ,  Seigo Kamitake

Inventor： Yoshio Maeda ,  Koichi Matsumoto ,  Seigo Kamitake

IPC: G01J3/08 ,  G01J3/42

CPC classification number: G01J3/42 ,  G01J3/08

Abstract: Monochromatic light emitted from a monochromator is split into two light beams. These light beams are detected by a photodetector and converted into corresponding electric signals after having been transmitted, respectively, through a sample to be analyzed and a reference placed in the respective beam paths. The signal corresponding to the light beam transmitted through the sample and the signal corresponding to the light beam transmitted through the reference are converted into digital signals which are subsequently stored in respective digital storages or memories. The signal corresponding to the light beam transmitted through the reference is compared with a value in a predetermined range. The resultant value is then converted into an analog signal for operating a sensitivity regulator thereby to adjust the sensitivity of the photodetector. Thus, the signal corresponding to the light beam transmitted through the reference (reference light signal) is so controlled as to lie in a predetermined range. From the digital signals stored in the digital memory, ratio between the sample light signal and the reference light signal is arithmetically calculated by a digital processor unit for determining the transmittance of the sample. Since the reference light signal is prevented from significant variation and the calculation of the signal ratio is effected on the basis of digital technique, the measurement accuracy is remarkably enhanced.

Abstract translation: 从单色仪发射的单色光被分成两束光束。 这些光束被光电检测器检测，并且在分别通过要分析的样本和放置在各个光束路径中的参考之后被转换成相应的电信号。 对应于通过样本传输的光束的信号和对应于通过参考的光束的信号被转换成数字信号，随后将其存储在相应的数字存储器或存储器中。 将与通过参考的光束相对应的信号与预定范围内的值进行比较。 然后将所得到的值转换成用于操作灵敏度调节器的模拟信号，从而调节光电检测器的灵敏度。 因此，通过参考（参考光信号）传输的光束对应的信号被控制在预定范围内。 从存储在数字存储器中的数字信号，采样光信号和参考光信号之间的比例由用于确定样品的透射率的数字处理器单元算术计算。 由于参考光信号被防止显着变化，并且基于数字技术来实现信号比的计算，所以测量精度显着提高。

公开(公告)号：US4125329A

公开(公告)日：1978-11-14

申请号：US721108

申请日：1976-09-07

Applicant: Park French ,  William H. Conaway

Inventor： Park French ,  William H. Conaway

IPC: G01J3/50 ,  A61C19/04 ,  G01J3/02 ,  G01J3/08 ,  G01J3/51 ,  H03M1/00 ,  G01J3/46 ,  G01J3/48

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/08 ,  G01J3/51 ,  G01J3/524 ,  H03M1/0624 ,  G01J3/465 ,  H03M1/52

Abstract: A tristimulus colorimeter employs a multiplexed dual slope integrator digital voltmeter wherein unknown and reference light beams are compared by sequentially applying unknown and reference electrical signals representative of the two respective light beams to the non-inverting and inverting inputs, respectively, of the integrator amplifier. Moreover, a compensating circuit provides for compensation of the colorimeter output signals with respect to reflectance error encountered in the optics portion of the colorimeter.

Abstract translation: 三色激光色度计采用多路复用双斜率积分器数字电压表，其中通过分别将表示两个相应光束的未知参考电信号和参考电信号分别对应于积分放大器的同相和反相输入来进行比较未知和参考光束。 此外，补偿电路提供了对于色度计的光学部分中遇到的反射率误差的色度计输出信号的补偿。

公开(公告)号：US3862804A

公开(公告)日：1975-01-28

申请号：US35434173

申请日：1973-04-25

Applicant: HOFFMANN KONRAD THANISCH

Inventor： HOFFMANN KONRAD THANISCH

IPC: G01N21/27 ,  G01J3/08 ,  G01J3/42 ,  G01N21/48

CPC classification number: G01J3/08

Abstract: An electronic spectrophotometer for measuring the reflectance of colored samples relative to a reference standard. A switching mirror directs light from a monochromator on a sample and a reference standard that are spaced apart. Reflections therefrom fall on a common photoelectric detector and the resultant signals are amplified, separated and indicated as a quotient between sample and standard reflectance.

Abstract translation: 一种用于测量有色样品相对于参考标准物的反射率的电子分光光度计。 切换镜将来自单色仪的光引导到样品上并且间隔开的参考标准。 其反射落在公共光电检测器上，所得到的信号被放大，分离并表示为样品和标准反射率之间的商。

公开(公告)号：US3853407A

公开(公告)日：1974-12-10

申请号：US35330773

申请日：1973-04-23

Applicant: SENSORES CORP

Inventor： DEWEY C

IPC: G01J3/42 ,  G01J3/427 ,  G01N21/27 ,  G01N21/31 ,  G01J3/48 ,  G01N21/34

CPC classification number: G01N21/314 ,  G01J3/08

Abstract: A multiple path spectrophotometer system is disclosed in which the beam from a radiation source is selectively directed over a plurality of different paths which may contain sample material or reference material and is detected by a single detector. The radiation source is operable to provide a beam at a plurality of alternately selectable wavelengths and the detector detects the absorption effects of material within the selected path. The method uses three sequential paths in which one path has negligible absorption, one has known selective absorption and one has unknown selective absorption to be determined.

Abstract translation: 公开了一种多路径分光光度计系统，其中来自辐射源的光束被选择性地定向在可以包含样本材料或参考材料并且由单个检测器检测的多个不同路径上。 辐射源可操作以提供多个可交替选择的波长的光束，并且检测器检测材料在所选路径内的吸收效应。 该方法使用三个顺序路径，其中一个路径具有可忽略的吸收，一个具有已知的选择性吸收，并且一个具有未知的选择吸收被确定。

公开(公告)号：US3843226A

公开(公告)日：1974-10-22

申请号：US33999473

申请日：1973-03-12

Applicant: LKB PRODUKTER AB

Inventor： PERSON T

IPC: G01J1/04 ,  G01J1/36 ,  G01J3/08 ,  G02B27/00

CPC classification number: G01J3/08 ,  G01J1/36

Abstract: System for periodicially shifting a light beam between two axially displaced paths consists of a rotary assembly subdivided into at least three angularly displaced segments, one of the segments allowing the beam to pass through the assembly along one path, the other two segments comprising axially aligned radially spaced oppositely directed conically shaped reflectors arranged to axially displace the beam when it impinges on one of them.

公开(公告)号：US3837744A

公开(公告)日：1974-09-24

申请号：US85880269

申请日：1969-09-17

Applicant: ENVIRONMENTAL DATA CORP

Inventor： EGAN D ,  HOLSTROM G ,  LORD H

IPC: G01J3/08 ,  G01J3/28 ,  G01J3/42 ,  G01J3/457

CPC classification number: G01J3/42 ,  G01J3/0229 ,  G01J3/08 ,  G01J3/457 ,  G01J2003/2866

Abstract: A spectrometer according to this disclosure includes optical means for receiving radiation from a region which may or may not contain particular materials to be monitored. Spectrum display means is provided for displaying the spectrum of received radiation. A first output means having first apertures is disposed to pass an image of absorption lines associated with the particular material being monitored, and second output means having second apertures is disposed to pass an image of continuum associated with the particular material.

Abstract translation: 根据本公开的光谱仪包括用于接收来自可以包含或可以不包含要监视的特定材料的区域的辐射的光学装置。 提供频谱显示装置用于显示所接收的辐射的频谱。 具有第一孔的第一输出装置设置成通过与被监测的特定材料相关联的吸收线的图像，并且设置具有第二孔的第二输出装置以通过与特定材料相关联的连续体的图像。

公开(公告)号：US3787121A

公开(公告)日：1974-01-22

申请号：US3787121D

申请日：1972-12-18

Applicant: BAXTER LABORATORIES INC

Inventor： MARCUS B ,  LOWY G ,  CONLON J

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/08 ,  G01J3/12 ,  G01J3/42 ,  G01J3/427

CPC classification number: G01J3/02 ,  G01J3/0232 ,  G01J3/0237 ,  G01J3/06 ,  G01J3/08 ,  G01J3/12 ,  G01J3/42 ,  G01J3/427

Abstract: A spectrophotometer of the two-beam type employing two adjustable monochromators and employing a rotating chopper disc to provide time-sharing operation, such as split-beam operation, dual wavelength operation, or other desired modes of operation. The chopper disc motor is stabilized by a fiber optic feedback system and cooperating electronic system utilizing light beams reflected by the underside of the chopper disc and photo diodes responding to these reflections. The main optical system includes an adjustable lens element coupled to one of the monochromators to compensate for variations in refractive index of the lens element with wavelength. The electronic readout system is gated by the chopper disc stabilizing system to maintain synchronism of the readout signals with the two monochromatic excitation beams.

Abstract translation: 采用两个可调单色器的双光束型分光光度计，并采用旋转斩光盘来提供分光操作，例如分光束操作，双波长操作或其它所需操作模式。 斩波盘电机由光纤反馈系统和协同电子系统稳定，利用由斩波盘的下侧反射的光束和响应于这些反射的光电二极管。 主光学系统包括耦合到单色仪中的一个的可调透镜元件，以补偿具有波长的透镜元件的折射率变化。 电子读出系统由斩波盘稳定系统门控，以保持读出信号与两个单色激发光束的同步。

公开(公告)号：US3465143A

公开(公告)日：1969-09-02

申请号：US3465143D

申请日：1965-12-09

Applicant: BAUSCH & LOMB

Inventor： DOONAN DOUGLAS D

IPC: G01J1/36 ,  G01J3/08 ,  H01H36/00

CPC classification number: H01H36/006 ,  G01J1/36 ,  G01J3/08

公开(公告)号：US2975669A

公开(公告)日：1961-03-21

申请号：US45241654

申请日：1954-08-26

Applicant: JARRELL ASH COMPANY

Inventor： JARRELL RICHARD F ,  FASTIE WILLIAM G

IPC: G01J3/12

CPC classification number: G01J3/12 ,  G01J3/08

公开(公告)号：US2551833A

公开(公告)日：1951-05-08

申请号：US77651947

申请日：1947-09-27

Applicant: STERLING DRUG INC

Inventor： EWING GALEN W

IPC: G01J3/08 ,  G01J3/51

CPC classification number: G01J3/51 ,  G01J3/08 ,  G01J3/501