Abstract:
A fluorescence spectrophotometer system may be implemented in scanning fluorescence polarization detection applications. A wavelength and area scanning fluorescence spectrophotometer system may include a light source, an excitation double monochromator, an excitation/emission light transfer module, an emission double monochromator, a high speed timer-counter circuit board, a precision positioning apparatus for positioning a sample relative to the focal plane of the excitation light, and polarizing filters at the excitation side and the emission side. The system may be operative to analyze more than one fluorescent compound in the sample; additionally or alternatively, the system enables analysis of samples from selected ones of a plurality of samples.
Abstract:
Disclosed are improvements in ellipsometer and the like systems capable of operating in the Vacuum-Ultra-Violet (VUV) to Near Infrared (NIR) wavelength range, and methodology of use.
Abstract:
An optical processor includes a light source (20), a grating device (23), a first lens (24), a reflector (25), a second lens (26), an array of mirror cells (28), a color wheel (29), and a third lens (30). The light source is for generating a number of light beams. The grating device is for reflecting and dispersing the generated light beams. The first lens is for imaging the reflected and dispersed light beams. The reflector is for reflecting the imaged light beams. The second lens is for correcting any aberration of the reflected light beams. The array of mirror cells is for reflecting the light beams received from the second lens. The color wheel is for coloring the reflected light beams. The third lens is for projecting the colored light beams onto a display.
Abstract:
A color measurement instrument includes a housing and illuminators, a two-dimensional photodetector array, and an optics system within the housing. A UV filter wheel closes the housing to prevent contaminants from entering the housing. The filter wheel supports UV filters and non-UV glass that can be selectively aligned with the illuminators. The photodetectors can be read in parallel, and each photodetector includes a unique spectral filter. The optics system delivers light from the sample target area equally to each of the photodetectors.
Abstract:
An array microscope scans a slide in rapid sequence at different wavelengths to record multiple spectral images of the sample. Full spatial resolution of the image sensor is realized at each color because pixels are not shared between spectral bands. The object and detector are placed at conjugate distances selected to produce substantially equal magnification with minimum chromatic aberration at all wavelengths to ensure registration of all images. Spectral analysis is carried out by combining the images captured at each wavelength. The greater-than-RGB spectral resolution provided by the combination of images enables the isolation and display of the effects produced by the contemporaneous use of more than two stains on a tissue for improved pathological analysis.
Abstract:
A hand-held portable modular spectrometer unit. The unit includes a detachable head containing a light source and optical components for detecting spectral information from light reflected from or transmitted through a target and a processor for converting the detected spectral information into digital information. The unit also includes a plug-in rechargeable power supply and a control module for controlling the components in the measurement head. The controller includes a computer processor for analyzing the digital information produced by the measurement head and a display monitor for displaying spectral information produced by the control unit. In preferred embodiments several measuring heads are available. Each of these measurement heads includes a spectrometer.
Abstract:
The present invention relates to instruments used to analyze materials with light-absorbing properties and their methods of use. More specifically, the invention relates to the use of adjustable optical filters whereby light-absorption can be measured in more detail and with greater variables than what is currently known in the art.
Abstract:
A handheld photoelectric measurement device includes a housing (G) which at its underside is provided with a measurement window (F) through which the photoelectric measurement of the surface of the measurement object is carried out. An illumination arrangement is positioned in the housing for impinging the measurement object through the measurement window with illumination light from two mutually perpendicular directions in space under a defined, relative small angle of incidence range. The housing further includes an optical pickup arrangement for the capture of the measurement light remitted by the measurement object through the measurement window under a defined, relatively small pickup angle range, a photoelectric converter arrangement provided by the pickup arrangement with the captured measurement light for conversion of the measurement light into corresponding electric measurement signals, and an electronic processing arrangement for the electric measurement signals. The housing (G) is at its forward side provided with a lateral measurement niche (N) which can be opened or closed to the outside by a movable wall portion. The measurement window (F) is positioned in the region of the measurement niche (N) in such a way that the measurement window is freely visible when the measurement niche is opened. Furthermore, a motor drive is provided for movement of the wall portion to thereby open or close the measurement niche (N).
Abstract:
A variable wavelength ultraviolet lamp. An apparatus for selectively producing one or more of a plurality of wavelength distributions of light is provided, comprising a primary light source having a primary wavelength distribution, at least one wavelength-transforming material that, in response to illumination by the primary light source produces secondary light having a wavelength distribution different from the primary light wavelength distribution, the wavelength-transforming material being disposed on a substrate external to the primary light source, and a wavelength-transforming material selection mechanism for placing at least a portion of one or more selected wavelength-transforming materials in front of the primary light source, in a selected preferred direction of light emission from the apparatus, such that the selected wavelength-transforming materials emit from the apparatus light having a wavelength distribution different from the primary light wavelength distribution.
Abstract:
An improvement in a wavelength division multiplexer and/or a dense wavelength division multiplexer (WDM/DWDM) is achieved by incorporating an electronically reconfigurable diffraction grating (108). The introduction of the electronically reconfigurable diffraction grating (108), which is typically fabricated using MEMS (microelectromechanical systems) technology, improves the compact design, durability, and dynamic functionality of the WDM/DWDM system.