Abstract:
Presently disclosed is a lighting system and methods of using the lighting system for in vitro potency assay for photofrin. The lighting system includes a lamp housing, a first lens, an infrared absorbing filter, an optical filter, and a second lens. The lamp housing includes a lamp and a light-port. In operation, broad spectrum light from the lamp exits the lamp housing by passing through the light-port. The first lens then collimates the broad spectrum light that exits the lamp housing through the light-port. The infrared absorbing filter then passes a first portion of the collimated broad spectrum light to the optical filter and absorbs infrared light of the broad spectrum light. The optical filter then passes a second portion of the collimated broad spectrum light to the second lens. The second lens then disperses the second portion of the collimated light to provide uniform irradiation of a cell culture plate. A method of using the lighting system for studying a photosensitizer is also disclosed.
Abstract:
A method comprising the steps of: generating one or more first, correlated photon pairs, each pair consisting of two photons with a wavelength » 1 and a wavelength » 2 , respectively, thereby generating a first and a second photon beam with wavelengths » 1 and » 2 , respectively, wherein preferably » 1 ‰ » 2 ; separating the photons of wavelength » 1 and the photons of wavelength » 2 ; illuminating an object with the photons having the wavelength » 1 ; generating one or more second, correlated photon pairs, each pair consisting of two correlated photons with a wavelength » 1 ' and a wavelength » 2 ', respectively, thereby generating a third and a fourth photon beam with wavelength » 1 ' and wavelength » 2 ', respectively wherein » 1 ' = » 1 and » 2 ' = » 2 ; and overlapping photons of wavelength » 1 generated in the first step with photons of wavelength » 1 generated in the fourth step, such that photons of wavelength » 1 generated in either step are indistinguishable; overlapping photons of wavelength » 2 generated in step with photons of wavelength » 2 generated in the fourth step, such that photons of wavelength » 2 generated in either step are indistinguishable; and using the overlapped photons of wavelength » 2 for imaging and/or spectroscopy of the object; such that the photons that illuminate the object are not detected.
Abstract:
Disclosed is an illumination source apparatus comprising a high harmonic generation medium (910), a pump radiation source and a spatial filter (940). The pump radiation source emits a beam (900) of pump radiation having a profile comprising no pump radiation in a central region of the beam and excites the high harmonic generation medium so as to generate high harmonic radiation (920). The pump radiation (950) and the generated high harmonic radiation are spatially separated beyond the focal plane of the beam of pump radiation. The spatial filter is located beyond a focal plane of the beam of pump radiation, and blocks the pump radiation. Also disclosed is a method of generating high harmonic measurement radiation optimized for filtration of pump radiation therefrom.
Abstract:
Eine Vorrichtung (1) zur Konzentrationsbestimmung einer Gaskomponente ist mit einer Strahlungsquelle (30) zu einer Abstrahlung (31) einer Lichtabstrahlung oder Wärmeabstrahlung in einem infraroten Wellenlängenbereich einer Detektoranordnung (40) mit mindestens zwei zu einer Erfassung der von der Strahlungsquelle (30) erzeugten Lichtabstrahlung oder Wärmeabstrahlung in einer Winkelanordnung (52, 62) geeignet ausgebildeten Detektorelementen (50, 60) und zwei zugeordneten Detektorelementen (50, 60) Filterelementen (51, 61) ausgestaltet. Zumindest eines der zwei Detektorelemente (50, 60) ist in einer Winkelanordnung (52, 62) in Bezug zu einer vertikalen Achse (32) ausgerichtet, so dass sich bedingt durch die Winkelanordnungen (52, 62) ein Überlappungsbereich (65) ergibt. Der Überlappungsbereich (65) bewirkt, dass Dämpfungen in der Lichtausbreitung, welche beispielsweise durch Gasmoleküle oder Feuchtigkeit (400) bedingt sein können, sich auf beide Detektorelemente (50, 60) auswirken und damit hinsichtlich der Konzentrationsbestimmung kompensiert sind.
Abstract:
PROBLEM TO BE SOLVED: To provide a spectrophotometric device for reducing an instrumental error between a plurality of spectrophotometric devices.SOLUTION: The spectrophotometric device 1 is configured to measure the spectral reflectivity of an object 9 to be measured, and to calculate the color value of the object 9 to be measured on the basis of the color-matching function and spectral reflectivity of an XYZ colorimetric system, and characterized to include an irradiation section for irradiating the object 9 to be measured with the rays of light having spectral intensity distribution in which relative intensity in a wavelength giving a peak value z in the color-matching function is 0.5 or more, in which the relative intensity is 1.