Instytut Optyki Stosowanej

Warsaw, Poland

Instytut Optyki Stosowanej

Warsaw, Poland

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Patent
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.


The system contains a source of light in the form of a light emitting diode (LED) and a rod lens (1) with a square cross-section at the base, with a perimeter in the face part in the shape of a sharp-angled truncated cone, terminated in the vertex part with a flat circular surface, and the lens on its equilateral base has a 2nd degree convex aspheric circular perimeter surface. The source of light is a tri-colour light emitting diode (1), while the 2nd degree convex aspheric circular perimeter surface has a hyperboloid shape.


Patent
Instytut Optyki Stosowanej | Date: 2017-06-21

A chromatic confocal distance sensor for measuring inner diameters of hollow objects, comprising a fibre optic coupler (9) connected to a light source and a spectrometer, and a double mirror (2) dividing two light beams from two terminals of the fibre optic coupler (9) into two measuring branches, and a double telecentric lens placed on the optical axis between the double mirror (2) and the fibre optic coupler (9), said double telecentric lens being composed of an aperture diaphragm (5) placed in the focal planes of a chromatic part (3, 4) and an apochromatic part (6, 7, 8), said chromatic part (3, 4) being placed at the double mirror (2) side of the aperture diaphragm (5), and said apochromatic part (6, 7, 8) being placed at the fibre optic coupler (9) side of the aperture diaphragm (5). Furthermore, the reflecting surfaces of the double mirror (2) form a right angle, such that diametrally opposed points on the inner surface of the hollow object are measured.


Patent
Instytut Optyki Stosowanej | Date: 2017-06-21

The optical system comprises a source of light and two plano-convex rod lenses (2, 3) of the same cross-section size at the base, the first of which (3) has a face part in the form of a sharp-angled truncated cone, while the second rod lens (2) is placed in the optical axis between the first rod lens (3) and the source of light in the form of a tri-colour light emitting diode (1), whereby the base of the first rod lens (3) has a spherical convex surface, while the second rod lens (2) has an ellipsoid convex surface from the side of the first rod lens (3).


Patent
Instytut Optyki Stosowanej | Date: 2017-07-05

The spectrometer comprises an entrance slit (1), a collimator mirror (2), a diffraction grating (3), a focusing mirror (4), an exit slit (5), and two additional exit slits (6, 7) behind which there are separate photodetectors (8, 9). Both additional exit slits (6, 7) are located symmetrically in relation to the first exit slit (5) which constitutes the nominal slit of the monochromator.


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.


Patent
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.


Patent
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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