Abstract:
An optical system for detecting light from a 2D area of a sample (36) comprises a collection lens (34) for collecting light from a collection region of the sample. A light detector (44) is positionally fixed with respect to the sample, and a reflector arrangement (61) directs collected light to the detector. The reflector arrangement comprises movable components and the collection lens (34) is movable relative to the sample. The collection lens and the movable components are configurable to define different collection regions, and the movement of the components effects a direction of the light from the collection region to a substantially unchanged area of the light detector (44). This arrangement avoids the need for a bulky detector in order to detect signals from a 2D sample area formed by scanning across the sample. This enables a more compact, cheaper and simpler solution.
Abstract:
Es wird ein optoelektronischer Sensor (10) zur Erfassung von Objekten in einem Überwachungsbereich (20) angegeben, der Folgendes aufweist: eine Frontscheibe (38), einen Lichtsender (12) zum Aussenden eines Lichtstrahls (16), eine bewegliche Ablenkeinheit (18) zur periodischen Abtastung des Überwachungsbereichs (20) mit dem Lichtstrahl (16), einen Lichtempfänger (26) zum Erzeugen eines Empfangssignals aus dem von den Objekten remittierten Lichtstrahl (22), mindestens einen Testlichtsender (42), mindestens einen Testlichtempfänger (44) und mindestens einen Testlichtreflektor (48), die einen Testlichtpfad (46a-b) durch die Frontscheibe (38) aufspannen, und eine Auswertungseinheit (32), die dafür ausgebildet ist, aus dem Empfangssignal Informationen über die Objekte in dem Überwachungsbereich (20) zu gewinnen sowie eine beeinträchtigte Lichtdurchlässigkeit der Frontscheibe (38) aus einem Testlichtsignal zu erkennen, das der Testlichtempfänger (44) aus von dem Testlichtsender (42) ausgesandtem und an dem Testlichtreflektor (48) reflektierten Testlicht erzeugt. Dabei ist der Testlichtreflektor (48) mit der Ablenkeinheit (18) mitbewegt angeordnet.
Abstract:
The invention relates to a package (1) that has a screw closure (2) comprising a neck (7) and a closing cap (9) with a side wall (10). The neck (7) has a first section (14) with a first diameter (15) and a second section (17) with a second diameter (18), the first diameter (15) being smaller than the second diameter (18). The second section (17) is closer than the first section (14) to a packing volume. The closing cap (9) has a sealing ring (23) which runs circumferentially, approximately parallel to and at a spacing from said side wall (10), and in an inwardly offset manner, said ring comprising a sealing bead (26). When the screw closure (2) is closed, this sealing ring (23) extends beyond the first section (14) of the neck (7), in the direction of the packing volume, such that it at least partially reaches into the second section (17) of the neck (7). The invention additionally relates to a screw closure (2), a closing cap (9), and to a method for producing such a screw closure (2).
Abstract:
PROBLEM TO BE SOLVED: To provide a microscope capable of performing simply and accurately optical adjustment of pumping light and erasing light, and showing surely super-resolution effect. SOLUTION: This microscope has a light source 21 for pumping light for emitting the pumping light; a light source 21 for erasing light for emitting the erasing light; light synthesizing means 23-26 for synthesizing coaxially the pumping light and the erasing light; a condensing means 62 for condensing the synthesized light; scanning means 44, 45 for scanning a sample by the synthesized light; a detection means 50 for detecting a light response signal generated from the sample, a wavelength selection element 42 arranged in an optical path for the synthesized light, and having an erasing light selection domain having a high wavelength selection characteristic to the erasing light and a pumping light selection domain having a high wavelength selection characteristic to the pumping light; and a space modulation element 43 arranged in the optical path for the synthesized light, for performing space modulation of the erasing light corresponding to the erasing light selection domain of the wavelength selection element. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
Quantitative fluorescence imaging systems and methods using angular illumination to obtain automatic focus information. Laser scanning (e.g., point or line scanning) with angular illumination in combination with an area imaging sensor, such as with a bi-telecentric scanner, is used to determine sample height (relative to a detection axis orthogonal to a platform holding the sample) and also correct for sample height in subsequent scans.
Abstract:
A medical imager, primarily for use in oral and dental applications. The imager has a source for providing a plurality of collimated beams of non-ionising radiation, in particular near-infrared light, and a plurality of correlated detectors. Each detector is arranged to receive unscattered light from one or part of one of said collimated beams and scattered light from one or more other beams. The imager further comprises means for using both the unscattered and scattered light to form an image.
Abstract:
The invention relates to a system for carrying out fibered multiphoton microscopic imagery of a sample (10) for use in endoscopy or fluorescence microscopy. This system comprises: a femtosecond pulsed laser (1, 2) for generating a multiphoton excitation laser radiation; an image guide (8) comprised of a number of optical fibers and permitting the sample to be illuminated by a point-by-point scanning in a subsurface plane; pre-compensating means (4) for pre-compensating for dispersion effects of the excitation pulses in the image guide (8), these means being situated between the pulsed laser and the image guide (8); scanning means for directing, in succession, the excitation laser beam in a fiber of the image guide, and; in particular, an optical head (9) for focussing the excitation laser beam exiting the image guide in the sample (10).