Abstract:
Device for detecting and counting particles which are fluorescent or made fluorescent, carried by a solid support, and a process for detecting said particles by means of said device. The device for detecting and counting particles which are normally present or may be contained in the form of contaminants in a liquid or gas fluid, or in a product in particular a food or hygenic product, by fluorimetry, comprises a light source (10), means for focusing(12) a beam from said light source and at least one means for detecting (40) the fluorescent light emitted by the particles present (60), and also comprises: a support (50) suitable for collecting particles which are naturally fluorescent or have been made fluorescent by means of at least one suitable stain chosen from the group which comprises the vital stains, the stains with a positive viability and fluorescent substances carried by antibodies and/or nucleic probes; means for scanning (21, 31, 35) the totality of the support surface to be analysed by said light beam; and a microprocessor (45) provided with at least one means for recording and counting simultaneously electrical signals transmitted by the detection device(s) (40) and the scanning system (21, 31, 35).
Abstract:
PROBLEM TO BE SOLVED: To provide systems and techniques for measuring the characteristics such as the stress or the like of a sample by using optical techniques. SOLUTION: In sample characteristics measuring systems, light may be incident on a sample 110 in the form of a pre-defined pattern which impinges on the surface of a wafer, and the reflection of the pattern is detected at a detector 115. The information indicating a change in the pattern after reflection can be used for determining one or more sample characteristics and/or one or more pattern characteristics such as stress, warpage, and curvature. A probe beam 108 can be coherent light with a single wavelength or light with multiple wavelengths. The pattern can be generated by the transmission of light through a diffraction grating or hologram. A light source 120 can be incoherent or multi-wavelength. The pattern can be generated by imaging the pattern arranged on a mask on the sample and re-imaging the pattern by the detector. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a mapping measurement apparatus for implementing mapping measurement using a simple apparatus constitution. SOLUTION: The mapping measurement apparatus 10 is provided with a light irradiating means 12 for irradiating a sample with a light and a light detecting means 14 for detecting a light reflected from or transmitted through the sample via an aperture 16, limits the light detected by the light detecting means 14 to the light from a predetermined measured region by leading the light reflected from or transmitted through the sample to the aperture 16, and implements the mapping measurement within a predetermined range of the sample by changing and measuring the measured region. A detecting scan mirror 18 is provided on an optical path from the sample 28 to the aperture 16, and has a reflecting face with a movable orientation. Since the reflecting face of the scan mirror 18 is variable in an incident direction of the reflected light or the transmitted light, the measured region detected by the light detecting means 14 can be changed. COPYRIGHT: (C)2005,JPO&NCIPI
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.
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).
Abstract:
A part scanning and part calibration apparatus and mechanism for the inspection of printed circuit boards and integrated circuits. The invention provides a method of inspecting small parts (30) that utilizes a camera (22) and two rotating mirrors (16, 18) to provide an image of a pattern masked reticle upon which a precise pattern has been deposited. A third overhead mirror (14A) is provided to view the part (30) under inspection from another perspective. State values of a system are provided that create a triangulation of the scene whereby certain dimensions of the system can be calibrated. The method and apparatus of the invention allow the elimination of a second camera and utilization of an imaging camera that is of lower resolution and thus lower cost than previously known schemes. By knowing the precise location of the camera and the optical access of each rotatable mirror the method of the invention allows the calibration of the remaining state variables of the system. A precise reticle mask (10) is provided with dot patterns which provide an additional set of information which is needed to calibrate the system. The method proceeds by inspecting the reticle and retaining the state values as the reticle is scanned. By scanning more than one dot pattern the missing state values can be resolved using an iterative trigonometric solution.
Abstract:
다채널 형광 검출 모듈 및 이를 포함하는 핵산 분석 시스템이 개시된다. 일 실시예에 따른 핵산 분석 시스템은, 미세 유체 소자를 포함하는 다수의 카트리지들이 각각 배치될 수 있는 다수의 적재부; 직선 운동을 하는 가동자를 구비하는 리니어 액추에이터를 포함하는 이송 모듈; 및 상기 가동자에 고정되어 상기 가동자와 함께 이동하는 것으로, 상기 카트리지에 여기광을 조사하고 상기 카트리지 내의 샘플로부터 발생한 형광을 검출하는 형광 검출 모듈;을 포함하며, 상기 다수의 적재부들은 상기 가동자의 직선 운동 궤도를 따라 일렬로 배열될 수 있다.