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Instytut Optyki Stosowanej | Date: 2017-03-08

The optical system of a chromatic confocal sensor with visual inspection consists of a spectrometric branch for measuring the working distance and a visual branch for visual observation, which are equipped with a common front objective (1) with apochromatic correction, prismatic beam splitter (2) which is responsible for the division into branches, illuminator, lenses forming a beam of light in the spectrometric branch, and a photocoupler (5) which introduces white light and redirects received monochromatic light, whose wavelength corresponds to the variable working distance, to the spectrophotometer (6). The spectrometric branch contains, between the prismatic beam splitter (2) and the photocoupler (5), a chromatic telescope-like lens system (3) and an additional transceiver objective (4) with apochromatic correction, whose numerical aperture is the same as the numerical aperture of the front objective (1). The visual branch contains a tubular objective (8) and an additional beam splitter (9) between the tubular objective (8) and the visual illuminator (10), wherein the tubular objective (8) is located between the prismatic beam splitter (2) and the additional beam splitter (9) which passes the white light beam from the visual illuminator (10) and reflects the beam sent from the tubular objective (8), and an adjustable objective (11), for instance an eyepiece, is located on the path of the reflected beam.

Wojtas J.,Military University of Technology | Bielecki Z.,Military University of Technology | Mikolajczyk J.,Military University of Technology | Szabra D.,Military University of Technology | And 5 more authors.
Przeglad Elektrotechniczny | Year: 2010

The preliminary outcomes of investigations concern a sensor of explosive materials vapours are presented. In the sensor concentration measurements of nitrogen oxides with cavity enhanced absorption spectroscopy method (CEAS) is applied. It is one of the most sensitive optoelectronic gas detection technique. There are two diagnostics lanes provide to parallely detect both nitric oxide (NO) and nitrous oxide (N2O) trace concentrations. To achive high sensitivity there will be used two quantum cascade lasers (QCL), the lasing wavelength of which will be from ranges: 5.23μm-5.29μm (for NO) and 4.46μm-4.48μm (for N2O).

Czech E.,Bialystok Technical University | Jaroszewicz Z.,Instytut Optyki Stosowanej | Tabaka P.,Technical University of Lodz | Fryc I.,Bialystok Technical University
Przeglad Elektrotechniczny | Year: 2015

The paper presents an analysis of the impact of spectral properties of spectroradiometer electro-optical bench (ie. diffraction grating, CCD detector) on the measurement accuracy of spectral power distribution of light sources. Analysis were performed for electro-optical spectroradiometric systems which were built on different combinations of diffraction gratings and detektors. © Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved.

Agency: European Commission | Branch: FP7 | Program: BSG-SME | Phase: SME-1 | Award Amount: 1.22M | Year: 2010

In Europe 16 Million workers operate in low visibility environments, including roadway construction personnel and vehicle operators, utility workers, survey crews, emergency responders, railway workers and accident site investigators, school crossing guards, parking and toll gate personnel, airport ground crews and law enforcement personnel directing traffic, parking service attendants, workers in warehouses with equipment traffic, shopping cart retrievers, sidewalk maintenance workers, and delivery vehicle drivers, to name a few. Statistics report that every year 6000 are injured by vehicles or human operated equipment, because of a lack of visibility, specially in night time operations. To address this issue and minimise accidents, the EU launched directives 89/656/EEC and 89/686/EEC, which oblige employers to make available high visibility clothes to their employees. State-of-the-Art solutions consist in applying reflective material stripes onto the garment surface. Lion-tex suggests an innovative product for high visibility garments, which exploits the lenticular effect. In the project three objectives are defined: first of all to develop a portfolio of innovative 3D lenticular effects, that will be exploited on 3D surfaces (like textiles) instead of flat substrates; second objective is to develop an industrial plotter for textiles that allows, all at once, the printing of interlaced images made of reflective and fluorescent ink and the deposition of resins through a jetting device for constructing the lenticular layer; finally a new set of high visibility garments will be prototyped, demonstrating not only the higher efficiency of this product in protection, but also the lower cost, with respect to the state of the art, for a stronger SMEs competitiveness.

Czyzewski A.,Instytut Optyki Stosowanej | Galas J.,Instytut Optyki Stosowanej | Kryszczynski T.,Instytut Optyki Stosowanej | Litwin D.,Instytut Optyki Stosowanej | And 2 more authors.
Przeglad Elektrotechniczny | Year: 2012

The dynamic development of the automotive industry, as well as the increasing number of cars enforces continuous improvement of safety of the road user. One of the elements that affects safety on the road is correctly designed and clearly visible regardless of weather conditions, traffic signs and signals. In this article some propositions of practical, modern optical setups, developed in the Institute of Applied Optics and ready for implementation are presented.

The system is composed of the femtosecond laser (FS), the photonic optical fibre (SF), the optical system with the light-splitting element (DW) and two optical channels (KO1, K02) and the interferometric system, particularly in a form of the VAWI interferometer situated in the optical axis of the measurement beam emerging from the optical system. The first optical channel (KO1) includes the monochromator (MCR) with the condenser (K) forming the measurement beam and the monochromator (MCR) at the entrance is connected to the photonic optical fibre (SF). The mirror system of the second optical channel (KO2) includes the moveable mirror (ZP) which changes the optical path length of the second beam in the mentioned second optical channel (KO2). The tested material (M) is placed in the measurement area situated in the crossing of the measurement beam and the second beam delivered via the optical channel (KO2).

Refractive optical element for athermalizing an infrared imaging system, said element being detachably mounted to the latter and having a circular base and a convex surface with an helical profile, the radial jog of which ascending helically from the lower edge (1) to the upper edge (2) of the jog.

Instytut Optyki Stosowanej | Date: 2015-12-23

The torch consists of an inner tube (1), a coaxially positioned outer tube (2), and at least three electrodes (3), whose tips are evenly spaced around the torch axis inside the outer tube (2). At the end of outer tube (2) there are evenly spaced electrode ports (3), extending in parallel to the torch axis from the outer tube end edge (2). In addition, the torch comprises a cylindrical head (4) sized to fit the outer diameter of the outer tube (2) provided with the same number of electrode ports (3). In another embodiment, the torch is provided with at least six electrodes (3) spaced in two planes perpendicular to the torch axis, while the head (4) has the same number of ports, wherein the difference in depth of every second port corresponds to the distance between the planes.

Instytut Optyki Stosowanej | Date: 2013-10-18

The excitation source consists of at least three identical electrodes arranged symmetrically in relation to the axis of the central tube, which supplies an analytical sample, and electrode cooling agent supply and removal systems. The electrodes are mounted in an electrically isolated metal housing so that the electrode tops are placed at the central tube outlet, and their ends are shorted in the power supply point with the microwave connections embedded in the housing on the extension of the electrode longitudinal axis and the connections are coupled with the microwave power source, the length of each electrode is L, where L is the length of the microwave. Each electrode has a hollowed longitudinal flow chamber for the cooling agent connected with metal side tubes, which supply and remove the cooling agent, while outside tube ends are electrically shorted with the housing.

The system includes a laser beam transmitter, a CCD array connected to a signal processing and analysing device, and a diffractive element with a variable focal length situated in the optical axis of the system between the transmitter and the CCD array. The diffractive element is composed of a pair of identical and parallel zone plates (P) rotationally mounted in respect to each other in the optical axis of the system. Each zone plate (P) has equally arranged elliptical zones situated around the plate centre, forming a wavefront focusing in the shape of a focal cross falling onto the CCD array. Another system comprises a spatial light modulator (SLM) situated on the laser beam path forming a diffractive element with a variable focal length in the form of a hyperbolic zone plate forming a wavefront focusing in the shape of a focal cross falling onto the CCD array.

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