Polymer composition and material with improved characteristics of turbidity and light transmission, modificator and method of producing polymer composition
SUBSTANCE: polymer composition comprises a polymer matrix and crosslinked copolymer microspheres. Crosslinked copolymer microspheres represent an alternating copolymer formed from monomers with anhydride, amide and/or imide groups, and olefin monomers and/or furan and its derivatives, and crosslinked by the crosslinking agent. Preferably, the composition has a turbidity of, at least, 92%, and a light transmission of, at least, 55%, more preferably a turbidity of, at least, 95%, and a light transmission of, at least, 59%.
EFFECT: material produced from the polymer composition for the present invention, has excellent light-scattering properties, which contributes to energy savings, low cost, and easy production.
30 cl, 1 tbl, 25 ex
SUBSTANCE: method includes heat treatment and formation of regions with modified optical properties. Heat treatment is carried out before the step of forming microoptical raster and includes forming heat-sealed layers on two opposite surfaces of a plate. The heat-sealed layers are formed by irradiating a plate made of porous optical material with laser radiation, the surface of the plate being in contact with a laser radiation-absorbing plate. After forming a heat-sealed layer on the second surface of the plate, microoptical raster is formed in the same layer. The raster is formed by irradiating the plane of forming regions, which is superimposed with the laser beam focusing plane, with laser radiation.
EFFECT: producing microoptical raster from positive microoptical elements on porous glass plates and higher optical power of microoptical elements in the raster.
31 dwg, 1 tbl
SUBSTANCE: system comprises a laser beam source (1), a laser beam collimator (2) and a focusing device (3). An optical element (5) is placed between the collimator and the focusing device (3) and is designed to branch the system for distributing the laser beam power in a first direction at an angle to the axis of the collimated laser beam. In the system according to a first version, a bifocal element (6) is placed either between the optical element (5) and the collimator (2) or between the optical element (5) and the focusing device (3). In a second version, a bifocal element (6) is placed between the collimator (2) and the focusing device (3).
EFFECT: homogeneity of power distribution of laser radiation in the welded area.
22 cl, 9 dwg
SUBSTANCE: electrical circuit parameters are controlled by transmitting an optical signal through light filters to a surface of liquid crystals which, by passing through said surface and deviating by a certain angle corresponding to the wavelength, falls on a photocell which enables current of the controlled circuit to flow through a branch where said control element is located, thereby increasing or reducing the required current or voltage value, and also enabling to carry out time delay and switching methods.
EFFECT: high accuracy of controlling an electrical circuit and setting a signal time delay by transmitting and converting an optical signal.
SUBSTANCE: when two diffraction optical elements are placed next and parallel to each other at a certain distance, the combination optically corresponds to a single diffraction optical element which acts as a lens, an axicon, a phase changer or a spiral retarder. If one of the diffraction optical elements rotates relative the other about a common central axis, the optical property of the device, for example, focal distance, refractive power, spiral index or phase shift, varies continuously.
EFFECT: high efficiency and compactness.
20 cl, 15 dwg
SUBSTANCE: optical resonator has a transparent flat plate bounded by total internal reflection surfaces, an optical element for inputting collimated radiation into the resonator and outputting radiation, as well as fastening elements. The number of total internal reflection surfaces is increased to 3, 4, 5 and 6, wherein said surfaces are side faces of a plate, which can be flat or arched cylindrical or spherical, while their axes of symmetry are uniformly distributed in one plane and cross at one point. The optical element for inputting and outputting radiation lies on one of these faces.
EFFECT: high Q-factor.
2 cl, 8 dwg
FIELD: organic chemistry.
SUBSTANCE: invention relates, in particular, to novel tetrapyrrole macroheterocycles - diphenyloctaalkylporphynes that can be used as a coloring substance of optical filters. Invention describes 5-(3'-allyloxyphenyl)-2,3,7,8,12,18-hexamethyl-13,17-dibutylporphyne (I) and 5-(2'-allyloxyphenyl)-2,3,7,8,12,18-hexamethyl-13,17-dibutylporphyne (II) as a coloring substance of optical filters. These compounds show maximum absorption in the range 624 nm and can be used for preparing colored polymers used as optical filter.
EFFECT: valuable properties of compounds.
FIELD: optics; instrument engineering.
SUBSTANCE: transreflector has device for reflecting radiation incident onto it from the first direction and device for transmitting light coming from the in direction being opposite to first one. Device for transmitting light has transparent material having first and second surfaces and constructions with bases adjacent to first surface of transparent material and side walls to come together at the direction to second surface of mentioned transparent material. Device for radiation reflection has reflecting material connected with base of assembly. Sum of part of light reflected relatively light coming from first direction and part of light transmitted relatively light coming from opposite direction exceeds 100%.
EFFECT: improved brightness; reduced effect of glares; improved efficiency.
14 cl, 7 dwg
SUBSTANCE: this flat lens is made from blank is made from high-temperature plastic straining of plate produced from Al2O3 crystal Z-cut. Mirror axis of said plate is aligned with that of male die with working surface described by 4th degree polynomial y = ΣKakxk, where y, x are coordinates of cross-section with centre at mirror axis, ak are factors describing the focal length and lens depth at k = 1…4. Flat lens inlet and outlet surfaces are planes perpendicular to mirror axis of the blank and lens. Flat lens outlet surface and blank have common point at lens mirror axis. Outlet surface is defined by required depth of the flat lens.
EFFECT: lens for parallel light beam directed perpendicular to part inlet surface.
SUBSTANCE: invention refers to transparent silicone hydrogels. What is presented is silicone hydrogel prepared by polymerisation of mixture of monomers containing (a) 30-98 wt % of at least one silicone (meth)acrylamide monomer and (b) 1-50 wt % of at least one non-silicone (meth)acrylamide monomer containing two or more hydroxyl groups in its molecule; wherein weight percentage is calculated from a total amount of monomer and polymer components in the monomer mixture, and a total amount of monomers (a) and (b) makes 90 wt % or more in relation to the total amount of the monomer and polymer components in the monomer mixture. There are also presented a medical device, an ophthalmic lens and a contact lens made of the above silicone hydrogel.
EFFECT: presented silicone hydrogel has the high content of acrylamide monomer and the excellent balance of humidity, elasticity, wetting ability and transparency, and is applicable to produce lenses having the excellent characteristics.
19 cl, 4 tbl, 27 ex
FIELD: physics, optics.
SUBSTANCE: invention relates to a laser beam focusing head for laser cutting, a method and an apparatus for laser cutting of a metal component. The focusing head comprises a collimating lens (13) and a focusing lens (14). The collimating lens (13) and the focusing lens (14) are made of ZnS and have peripheral thickness of at least 5 mm. A deflecting mirror (15) operating at an inclination angle (α) from 40° to 50° is placed between the collimating lens (13) and the focusing lens (14) on the path of the laser beam. The laser cutting apparatus comprises a solid-state laser device (SL) emitting a laser beam with wavelength of 1.06 mcm to 1.10 mcm and power of 0.1 kW to 25 kW, said focusing head and a conveying fibre (CF) connecting the solid-state laser device (SL) and the focusing head.
EFFECT: invention provides a stable focusing position of a laser beam during cutting.
13 cl, 5 dwg, 1 tbl
SUBSTANCE: invention relates to the field of optical nanotechnologies, optical instrument-making, rocket, space, laser optics, quantum and optical nanoelectronics, useful for display, television and medical technology. The optical coating is a thin layer (100 nm or less) coating based on carbon nanotubes with the magnitude of inhomogeneities on the nanometer level. For application of carbon nanotubes on the substrate a slot CO2-laser is used with the laser beam controlled in power. The optical element consists of the coating based on carbon nanotubes and a hygroscopic substrate. The substrates of KBr, NaCl, KCl are used for providing functioning of this optical coating up to the middle infrared region of the spectrum. The coating is able to function in the infrared regions of the spectrum.
EFFECT: increased moisture resistance of the coating.
SUBSTANCE: invention relates to a method of forming a transparent doped layer containing zinc oxide on a polymer substrate for optoelectronic devices and a transparent doped layer. The method includes contacting a polymer substrate with at least one precursor containing a dopant and zinc, and exposing to ultraviolet light during chemical vapour deposition to decompose at least one precursor and deposit a layer on the polymer substrate. The polymer substrate is selected from a group consisting of fluoropolymer resins, polyesters, polyacrylates, polyamides, polyimides and polycarbonates. The contacting step is carried out at pressure approximately equal to atmospheric pressure.
EFFECT: providing a chemical vapour deposition method for depositing doped zinc oxide films on polymer substrates for use in optoelectronics.
12 cl, 1 tbl, 8 dwg, 2 ex
SUBSTANCE: group of inventions relates to a polimerisation-able photochromic isocyanate composition, containing a photochromic compound, to a photochromic mesh optical material and to a method of its obtaining. The polimerisation-able photochromic isocyanate composition includes. wt.p.: an organic photochromic compound 1-15; a polymerisation catalyst 0.01-5, polymerisable compounds 100. The polymerisable compounds contain, wt.p.: diisocyanates and/or oligoisocyanurateisocyanates 60-100, monoisocyanates 0-40. The catalyst is used in an amount of 0.01-5 wt.p. per 100 wt.p. of the polymerisable compounds. Also described is the photochromic mesh optical material - the product, obtained by thermal hardening of the polymerisation-able composition, described above, at least, on one surface of a sheet of a transparent substrate, made of polymethylmethacrylate, polycarbonate, polyethyleneterephthalate, cellulose derivatives, polyvinyl alcohol, polyvinylchloride, polyvinylidenchloride, polyethers, polyurethanes. Also described is a method of obtaining the photochromic mesh optical material.
EFFECT: obtaining the polymerisation-able photochromic isocyanate composition with high adhesion ability and product based on it with high optical properties, such as transparency, colourlessness, or colouration, and long-term exploitation.
13 cl, 2 tbl, 25 ex
FIELD: physics, optics.
SUBSTANCE: invention can be used in optical systems of UV, visible and IR optical, optoelectronic and laser devices. A flat-concave lens is made of a plastically deformed piece part, wherein an integral flat surface is perpendicular to an axis of symmetry of the piece part and formed from an apex of the piece part at x0<H, wherein H is the thickness of the piece part. An output surface of the lens has a profile providing measuring the thickness hy=h0×n0/ny, wherein h0 is the lens thickness in the centre, n0 is an ordinary beam refraction index, while ny is an extraordinary beam refraction index at a distance Y from the lens centre. The piece part is made by the plastic deformation of a parallel-sided plate of a crystal Z-section by the central annular bend. The lens surface is formed by removing an excessive layer of the material from the piece part.
EFFECT: producing the leucosapphire lens forming the flat wavefront of extraordinary beams and transparent within 25,000-2,000 cm-1 for a parallel beam of light perpendicular to the input surface.
2 cl, 1 dwg
SUBSTANCE: invention relates to improved method of obtaining workpieces from silver halides and their solid solutions for fibrous infrared lightguides, which includes application on silver halide crystal-core of crystalline shell of crystalline silver halide with refraction index lower than in crystal-core, and thermal processing. Shell on crystal-core is applied by ion-exchange diffusion in ion-exchange source, as the latter taken is finely disperse silver halide powder with coarseness 1-20 mcm, diffusion is carried out at temperature, close to melting temperature of crystal-core in atmosphere of mixture of vapours of halides, included into composition of crystal material and powder, taken in equal ratio under pressure 0.2-0.5 atm.
EFFECT: method makes it possible to reduce optic loss of lightduides, operating in infrared spectrum range.
SUBSTANCE: multilayered coating contains three successive layers with an even thickness: a lower mirror metal radio-reflecting skin-layer of pure aluminium, an intermediate protective thermoregulatory dielectric layer of zirconium dioxide and an upper protective wear-resistant highly strong diamond-like carbon layer.
EFFECT: provision of the operation in extreme conditions of open space due to the application of a thin substrate-envelope from a polymer composite material.
3 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to a monocrystal with a garnet-type structure to be used in optical communication and laser processing devices. This monocrystal is described by general formula (Tb3-xScx)(Sc2-yAly)Al3O12-z, where 0<x<0.1; 0≤y≤0.2; 0≤z≤0/.3.
EFFECT: translucent monocrystal that can inhibit cracking at cutting.
5 cl, 3 dwg, 1 tbl, 5 ex
SUBSTANCE: invention is referred to light engineering, in particular to polymer luminescent composites used for arrangement of general and local lighting. The polymer luminescent composite excited by blue light-emitting diode contains transparent polycarbonate with melt flow index of 6-40 g/10 min, photoluminiscent phosphor - yttrium- gadolinium alumogallic garnet activated by cerium with formula of (YGd)3(AlGa)5O12:Ce, powdered polyethylene wax with particle size of 18-30 mcm, heat stabiliser - Ultranox 626 and Tinuvin 360.
EFFECT: suggested composite provides reduced intensity of blue light and increased illumination.
6 dwg, 2 tbl, 14 ex