Abstract:
There is set forth herein a light energy exciter that can include one or more light sources. A light energy exciter can emit excitation light directed toward a detector surface that can support biological or chemical samples.
Abstract:
Detection system comprising an examination region, a one-piece optical element including a focusing portion to concentrate light received from the examination region and a guiding portion to homogenize light received from the focusing portion, and a detector configured to detect homogenized light received from the guiding portion.
Abstract:
A fluorescence detection apparatus is provided which comprises a sample holder (4) for holding stationarily sample vessels deployed along a circle line or concentric circle lines having different radiuses, a partition plate (3) connected to a driving means (7) to be rotatable around the center of the circle line or concentric circle lines, optical means (5) for excitation light and optical means (6) for fluorescence light fixed respectively to the partition plate to be rotatable in integration therewith, a first light guide (1) constituted of numerous optical fibers, a photosensor (2), and a light source (8) for generating the excitation light, wherein the partition plate, the optical means for excitation light, and the optical means for fluorescence are integrally rotated, and thereby the fluorescence of the sample arranged along the circle line is successively detected and the detected fluorescence is transmitted to the photosensor. This fluorescence detection apparatus is useful in real-time monitoring of fluorescence signals, and satisfies the requirements of precise temperature control, quick treatment of many samples, high sensitivity, high reliability, low cost, and small size of the apparatus.
Abstract:
Ein Meßkopf, insbesondere für ein Handgerät zur Erfassung von photometrischen Daten, verfügt über eine Beleuchtungsoptik mit einer Asphäre, die eine ringförmig um die Symmetrieachse des Meßkopfes laufende Mulde aufweist, welche im Querschnitt die Gestalt eines Ellipsensegments hat. Die Meßoptik (116) zum Erfassen des vom Meßfleck (57) remittierten Lichtes bildet einen runden Meßfleck (57) auf eine Ellipse am Eintrittsspalt (59) des Monochromators (55) ab, wozu eine sphärisch/zylindrische Linse (132) sowie ein erster Glasstab (148) und ein Glasstab (149) verwendet werden, die jeweils zylindrische Flächen (154, 155, 156, 157) aufweisen, deren zugeordnete Zylinderachsen gekreuzt sind.
Abstract:
L'invention permet de déterminer la couleur à donner en particulier à une prothèse dentaire à partir de la mesure de la couleur des dents adjacentes dans la bouche du patient. Un instrument (44) à fibre optique permet de capter la lumière réfléchie par une dent (50) et de la transmettre à l'entrée d'un spectrocolorimètre (12, 14) associé à un microprocesseur (10), pour déterminer la réflectance spectrale diffuse de la dent et calculer les composantes trichromatiques de ses couleurs apparentes pour divers types d'éclairage. L'invention s'applique notamment à la détermination des couleurs des prothèses dentaires.
Abstract:
Vorrichtung zur Messung der Lichtstreuung in stark streuenden dispersen Medien. Bei dieser Meßvorrichtung wird aus einer Lichtquelle, bevorzugt aus einem He-Ne Laser Licht in eine Meßzelle gestrahlt, in der sich das zu untersuchende Medium befindet. Das aus der Küvette austretende Licht wird mit einem Lichtdetektor (Photomultiplier) gemessen. Um den Einfluß von Fremdlicht auszuschalten, ist es vorteilhaft, dem Laser einen Chopper nachzuschalten und das am Photomultiplier empfangene Meßsignal in einem Lock-in Verstärker mit angeschlossenem Rechner und Schreiber am Ausgang des Photomultipliers zu verarbeiten.
Abstract:
A detection device comprises a chip holder, a light source, a light-guide rod, a wavelength separation filter, and an optical sensor. Given the relationship between the angle of incidence and light intensity of fluorescence on a light reception surface of the optical sensor, the optical transmittance of the wavelength separation filter at the dominant wavelength of the rays of fluorescence incident on the light reception surface at a peak angle of incidence at which the light intensity is the highest is greater than the optical transmittance of the wavelength separation filter at the dominant wavelength of the rays of excitation light incident on the light reception surface at the peak angle of incidence and is higher than the optical transmittance of the wavelength separation filter at the dominant wavelength of the rays of fluorescence incident on the light reception surface at an angle of incidence of 0 DEG.
Abstract:
This detection device has a holder, light irradiation unit, angle adjustment unit, light receiving sensor, light receiving optical system, optical filter, and a control unit. The light receiving optical system guides light from a detection chip to the light receiving sensor. The optical filter is disposed in the light receiving optical system, blocks a part of plasmon scattered light, and passes, out of the light emitted from the detection chip, a part of the plasmon scattered light, and fluorescence emitted from a fluorescent material. The light receiving sensor detects the fluorescent light, and the part of the plasmon scattered light, which have been emitted from the detection chip and passed the optical filter. On the basis of the detection results of the plasmon scattered light, the control unit controls the angle adjustment unit, and adjusts the incident angle of the excitation light to a predetermined incident angle.
Abstract:
In a sample analyzing apparatus, an injector assembly injects a reagent onto a sample, and luminescent light from the sample is transmitted to a detector. The assembly may be movable toward and away from the sample. The assembly may include one or more needles that communicate with one or more reservoirs supplying reagent or other liquids. The assembly may include a light guide for communicating with the detector. A cartridge may be provided in which the assembly, one or more reservoirs, and one or more pumps are disposed. The cartridge and/or the apparatus may be configured for enabling rinsing or priming to be done outside the apparatus. The cartridge and/or the apparatus may include one or more types of sensors configured for detecting, for example, the presence of liquid or bubbles in one or more locations of the apparatus and/or the cartridge.