Abstract:
A spectrum analysis camera (300) which can, by itself, deliver both an ordinary color picture and a picture for spectrum analysis and a spectrum analysis system. In the CCD (charge-coupled device) section of the camera (300); one photosensitive unit is constituted by n (at least two) photosensors (S₁-S₉). The n photosensors (S₁-S₉) are set so as to have detection wavelength ranges which do not overlap each other. The spectrum analysis is performed using the output signals of the individual photosensors (S₁-S₉) in Fig. 3(b). On the other hand, the color picture is formed using R (red); G (green) and B (blue) signals which are created by synthesizing the output signals of the respective photosensors (S₁-S₉).
Abstract:
Appareil destiné à produire des informations pondérées sur le temps d'évanouissement (par ex. une image pondérée sur le temps d'évanouissement) d'un échantillon luminescent comprenant une source d'excitation lumineuse disposée de manière à illuminer l'échantillon, un dispositif permettant de moduler ou de pulser l'intensité de l'excitation lumineuse de manière cyclique prédéterminée, un dispositif de détection des photons émis par l'échantillon en résultat de sa luminescence, un dispositif de stockage des données représentatives des photons détectés, les données stockées étant pondérées en tant que fonction de la différence de phase entre la détection des photons et la modulation à variation cyclique, et un dispositif permettant de produire des informations pondérées sur le temps d'évanouissement à partir des données stockées.
Abstract:
Apparatus for quantitative analysis of a material sample, such as whole grain, as a function of optical characteristics thereof includes a light source and a solid state detector of silicon or other suitable construction. A material sample is positioned between the light source and the detector, and light energy is focused through the sample onto the detector at a plurality of preselected wavelengths in the near-infrared range of 800-1100 nm. Illumination wavelength is selectively controlled by an opaque disc having a central axis and a plurality of apertures around the periphery at uniform radius from the disc axis. A plurality of filter elements are carried by the disc over respective ones of the peripheral apertures and have transmission characteristics corresponding to the plurality of preselected wavelengths. The filter elements are carried in a continuous circumferential array around the disc periphery, with the array including at least one opaque section for chopping light energy incident on the detector. The disc is rotated about its axis in a continuous motion so that each filter element in turn intersects light energy transmitted through the sample. Analysis electronics is responsive to light energy incident on the detector at the plurality of preselected wavelengths to indicate a preselected characteristic of the material sample.
Abstract:
Die wesentlichen Schritte des erfindungsgemässen Verfahrens zur Messung und Auswertung von Lichtfleck-Intensitätsprofilen, hier sind es Laserintensitätsprofile, sind folgende: Aus dem Strahlengang des kurzzeitigen optischen Ereignisses wird ein Teil der Energie ausgekoppelt und deren Energiedichte in zwei Raumrichtungen (vorzugsweise orthogonal zum Photoneneinfall) digitalisiert bzw. quantisiert. Das zur Lichtintensität proportionale Signal jedes Digits bzw. Quants wird gespeichert. Gleichzeitig ist auch die Gesamtenergie über dem gespeicherten Lichtfleck ermittelt worden. In einem nachfolgenenden Verfahrensschritt, wird aus diesen Informationen die Lichtverteilung auf einer Fläche gegenüber einer zu dieser Fläche nicht parallelen Achse abgebildet. Dieses eine Vorgehen liefert das gesuchte Intensitätsprofil, also die Energieverteilung über die Messfläche die bei dem kurzzeitigen optischen Ereignis eingefallen ist.
Abstract:
An automatic refractometer comprising a photosensitive device having a relatively narrow dynamic range in the form of a linear scanned array including a plurality of photoelectric elements each providing an output pulse during a scan and the amplitude of each pulse being determined by the amount of illumination of the corresponding element by incident light, an optical system for directing light onto the array in a manner such that the particular photoelectric elements of the array which are illuminated by the light are determined by the index of refraction of a light transmitting substance placed in operative association with the optical system, a circuit for converting signals from the array into digital signals containing information as to the amplitudes of the signals from the array, a digital processing circuit for storing respective signals from reference and sample substances placed in operative association with the optical system and for computing the index of refraction of the sample substance by means of a comparison of the stored reference and sample information, and apparatus for providing a read out of the computed result. The digital processing circuit also calculates the percent solids in the sample substance, and the circuit also includes a plurality of channels for containing information to provide different interpretations of the index of refraction computed thereby. The circuit for converting array signals into digital signals comprises a peak detector circuit for detecting peak amplitudes of signals obtained from scanning the array and an analog-to-digital converter for providing digital signals containing information as to peak amplitudes of the array signals. There is also provided arrangements for measuring the temperatures of the sample substance and comparing to a reference for applying a temperature correction to the computed index of refraction, monitoring and regulating the temperature of the component of the optical system to which the sample substance is exposed, and monitoring and regulating the intensity of light incident on the array.
Abstract in simplified Chinese:本发明揭露一种分光光度计,包括一光检测单元、一电路单元、一饱和判断单元以及一测定结果运算单元;其中光检测单元将所接受之光转换为电子信号并予以输出;电路单元包括复数个增益放大器与复数个模拟数码转换器(Analog-to-Digital Converters,ADC),增益放大器将来自于光检测单元所输出之信号予以放大为复数个光增益,且模拟数码转换器将光增益转换为数码信号,并予以输出为复数个光量数据;饱和判断单元判断来自于电路单元之各光量数据是否饱和;测定结果运算单元系根据饱和判断单元之判断结果,使用光量数据中的一部分或全部的光量数据,计算所接受之光的测定结果。