Abstract:
Gezeigt wird ein Gehäuse (1) für eine UV-Lichtquelle zur Verwendung in einem Verfahren zum Detektieren von bleihältigen Glasstücken in einem einschichtigen Materialstrom von Objekten aus vorwiegend Altglas. Um unerwünschte Wellenlängen, insbesondere jene des sichtbaren Lichts, aus dem Spektrum der UV-Lichtquelle zu eliminieren, wird vorgesehen, dass die UV-Lichtquelle (3) so in das Gehäuse mit zumindest einem Spiegelfilter (16) eingebaut werden kann, dass das Licht aus der UV-Lichtquelle (3) über zumindest einen Spiegelfilter (16) umgelenkt und gefiltert wird, nämlich durch zwei normal zueinander angeordnete Spiegelfilter (16) um 180° umgelenkt wird.
Abstract:
An NIR spectroscopy fluid analyzing system (1) using a series of LED's (21), each having its own preselected center wavelength, as illumination sources. These wavelengths have overlapping spectral widths, such that the measurement covers a broad spectrum. The LED's (21) illuminate the fluid sample sequentially, and subsequently the transmission absorbance through the sample and the reflectance or scattering from the sample is measured for the wavelength range of each LED. The measurements are performed using photodetectors (24,27,29). The concentrations of component parts of the fluid are expressed in the form of a polynomial, which is a function of the measured transmitted and/or reflected intensities, and of empirical coefficients, which are extracted by prior statistical analysis on measured intensities obtained from a large number of test samples having known concentrations of the component. A novel sample chamber (16), capable of performing optical absorption measurements on a flowing sample of fluid, is described.
Abstract:
The invention relates to a device (1) for emitting electromagnetic radiation, in particular UV radiation, comprising at least one radiating means (2) which only emits radiation at visible wavelengths. According to the invention, the device comprises a unit for detecting a functional error of the radiating means. In practice, the radiating means (2) is provided for emitting only UV radiation and/or IR radiation and is formed by a light diode. In an embodiment of the invention, the detection unit (3) is designed to continuously monitor the radiating means (2) for functional errors, and the device (1) comprises an open-loop and/or closed-loop control unit (4) which is provided to automatically switch off the radiating means (2) and/or display the functional error, upon detection of the functional error by the detection unit (3).
Abstract:
An illuminating and optical apparatus for inspecting soldering of PCB of the present invention comprises: a fixed member which forms a horizontal plane at the top thereof and a tilted plane at the side thereof; first illuminating means disposed at the upper plane of the fixed member for illuminating the inspecting part attached on the PCB; second illuminating means disposed at the tilted plane of the fixed member for illuminating the inspecting part to obtain an image whose shade is inverted to that obtained by the first illuminating means; control means for controlling brightness of the first and second illuminating means and turning on/off of power; and optical means disposed at the upper portion of the fixed member for photographing at large and small views the inspecting part illuminated by the first and second illuminating means under the control of the control means, thereby automatically inspecting the mounted and soldered states of various electronic parts on the surface of a printed circuit board of a surface mounting apparatus by evenly illuminating and photographing with an adequate view in accordance with the size thereof.
Abstract:
A method of "reading" the result of an assay effected by concentrating a detectable material in a comparatively small zone of a carrier in the form of a strip, sheet or layer through the thickness of which electromagnetic radiation such as visible light is transmissible, wherein at least a portion of one face or the carrier is exposed to incident electromagnetic radiation which is substantially uniform across the entire portion, the portion including the small zone, and electromagnetic radiation emerging from the opposite face of the carrier is measured to determine the assay result. Preferably the radiation is diffuse light.
Abstract:
Reflektierende bzw. geprägte Bereiche sollen für eine optische Inspektion über einen möglichst großen Winkelbereich möglichst einheitlich beleuchtet werden.
Abstract:
The invention relates to a device for optically detecting analytes in a sample, comprising optoelectronic components in the form of multiple optical detectors for receiving photons and multiple optical emitters for emitting photons, wherein at least three emitters are provided in a flat arrangement, not in a line, and at least three detectors are arranged in a flat arrangement, not in a line; and the emitters and/or the detectors have at least three different wavelength characteristics.
Abstract:
An impurity measuring device comprises a table (T) on which a sample (S) is placed with its fracture surface (h) upward, an illuminating means (7) for irradiating the fracture surface (h) with light (L) from a plurality of directions, an imaging means (10) for imaging the fracture surface (h) illuminated by the light (L), a dark and light coloring means for subjecting the imaged image to dark and light coloring, and a binarizing means for binarizing the image through comparison between the result of the dark and light coloring and a threshold value. Irradiating the fracture surface (h) with the light (L) from a plurality of directions ensures that the image obtained by imaging the fracture surface (h) is free from shading or optical irregularities due to minute irregularities in the fracture surface (h). Therefore, impurities in the sample (S) from the fracture surface (h) can be accurately detected by subjecting the image to dark and light coloring and binarization.
Abstract:
An impurity measuring device includes a table (T) on which a sample (S) is to be placed with its fracture surface (h) facing up, an illuminating means (7) for irradiating the fracture surface (h) with light (L) from a plurality of directions, an image sensing means for sensing an image of the fracture surface (h) irradiated with the light (L), continuous tone color image processing means for processing the sensed image into a continuous tone color image, and a binarizing means for binarizing the continuous tone color image through comparison between the result of the continuous tone color image processing and a threshold value. As the fracture surface (h) is irradiated with the light (L) from the plurality of directions, the image obtained by sensing the image of the fracture surface (h) is free from shading or optical irregularities caused by minute irregularities on the fracture surface (h). Therefore, impurities in the sample (S) can be accurately detected from the fracture surface (h) by subjecting the image to the continuous tone color image processing and binarization.