Abstract:
A microlithographic projection exposure apparatus has a measuring device (54), by which a sequence of measurement values can be generated, and a processing unit (48) for processing the measurement values. To this end, the processing unit has a processing chain which comprises a plurality of digital signal processors (DSPl, DSP2, DSP3), the first digital signal processor (DSPl) in the processing chain being connected to the measuring device (54) in order to receive the sequence of measurement values. Furthermore, each subsequent digital signal processor (DSP2, DSP3) in the processing chain is connected to a respectively preceding digital signal processor (DSPl, DSP2) in the processing chain. The digital signal processors (DSPl, DSP2, DSP3) are programmed so that each digital signal processor (DSPl, DSP2, DSP3) processes only a fraction of the measurement values and generates processing results therefrom, and forwards the remaining fraction of the measurement values to the respective next digital signal processor (DSP2, DSP3) in the processing chain for processing.
Abstract:
The process allows to record onto a photographic emulsion or to visualize on a monitor, by means of a camera provided with a suitable sensor-detector, the different optic phenomena activated, on the surface to be investigated, by the I.R and U.V. radiations, so as to obtain quality information of extensive kind and not destructive or invasive manner for reaching, through a comparison with the visible image, the realization of homogeneity and non-homogeneity maps provided with the spectral absorption, reflection and transmission of the different elements present in the surface and in the layers immediately below said surface.
Abstract:
A system and method are described for performing tear film structure measurement. A broadband light source illuminates the tear film. A spectrometer measures respective spectra of reflected light from at least one point of the tear film. A color camera performs large field of view imaging of the tear film, so as to obtain color information for all points of the tear film imaged by the color camera. A processing unit calibrates the camera at the point measured by the spectrometer so that the color obtained by the camera at the point matches the color of the spectrometer at the same point. The processing unit determines, from the color of respective points of the calibrated camera, thicknesses of one or more layers of the tear film at the respective points. Other applications are also described.
Abstract:
The invention relates to a method for monitoring a property of the appearance of the teeth of a patient, said method including the following consecutive steps: A) acquiring, by means of a first acquisition apparatus, at least one first two-dimensional image of said teeth and of a first reference gauge, referred to as "initial image"; B) acquiring, by means of a second acquisition apparatus, at least one second two-dimensional image of said teeth and of a second reference gauge having the same appearance as the first reference gauge, referred to as "updated image"; C) standardising the initial and updated images such that the representations of the first and second reference gauges on the standardised initial and updated images have the same appearance; D) before or after step C, marking the same region of the teeth on the initial and updated images; and E) comparing the appearance of said region in the standardised initial and updated images.
Abstract:
The invention relates to a method for optimising initial discriminating information extracted from a two-dimensional image of the dental arches of a patient, referred to as "acquired image", by means of a three-dimensional digital reference model of at least one portion of an arch of the patient, said method including the following steps: C1. assessing the quality of the initial discriminating information and a quality threshold, filtering so as to keep only the initial discriminating information that has quality higher than the quality threshold, and defining "the discriminating information to be tested" as being the initial discriminating information selected; C2. testing a consistency between the discriminating information to be tested and said reference model; C3. assessing the result of the test and, in accordance with said assessment: adding discriminating information that was not kept to the discriminating information to be tested and/or deleting discriminating information from the discriminating information to be tested, and then returning to step C2. or; defining the optimal discriminating information as being the discriminating information to be tested.
Abstract:
The invention relates to a method for monitoring the shape of the teeth of a patient, including the following steps: a) producing a three-dimensional digital model of at least one portion of an arch of the patient, preferably of the arches of the patient, or "initial reference model"; b) acquiring at least one two-dimensional image of the arches of the patient, referred to as "updated image", under actual acquisition conditions; c) analysing each updated image and producing, for each updated image, an updated map relating to a piece of discriminating information; d) optionally determining, for each updated image, rough virtual acquisition conditions that approximate said actual acquisition conditions; e) searching each updated image for a final reference model corresponding to the shape of the teeth, and optionally to the positioning of the teeth, during the acquisition of the updated image; and f) comparing the shapes of the initial reference model and of the reference model obtained at the end of the preceding steps, referred to as "final reference model", in order to determine the deformation and/or the movement of the teeth between steps a) and b).
Abstract:
A disclosed remote work system (100) includes a light source (102) and a nonlinear converter (108A-N) optically coupled to and remote from the light source. The nonlinear light converter converts a narrowband light pulse received from the light source to a converted spectrum light pulse. The system also includes a work element (110A-N) coupled to the nonlinear light converter. The work element performs a work operation using the converted spectrum light pulse. A related remote work method includes generating a narrowband light pulse and conveying the narrowband light pulse to a remote location (114). The method also includes converting the narrowband light pulse to a converted spectrum light pulse at the remote location. The method also includes performing a sense operation or work operation at the remote location using the converted spectrum light pulse.
Abstract:
The present invention is in the field of multi spectrum vision aid, use thereof, and a method using the aid. The present invention relates in a first aspect to a multi spectrum vision aid comprising at least two transparent elements, in a second aspect to use thereof and in a third aspect to a method of distinguishing elements in a population.
Abstract:
Impinging electromagnetic radiation generates pairs of majority and minority carriers in a substrate. A spectrometer device for detection of electromagnetic radiation impinging on a substrate comprises means for generating, in the substrate, a majority carrier current; at least one detection region for collecting generated minority carriers, the minority carriers being directed under influence of the majority carrier current; and means for determining spectral information based on minority carriers collected at the at least one detection region.