Method of making lenses for dental glasses. RU patent 2505845.
 Method for light-protective filtering with zonal adaptation and apparatus for realising said method / 2482526In the method and apparatus, unnecessarily bright light from each scene zone is reduced to a level normal for eyesight, while realising in elements of a light-protective modulator placed in front of eyes, compensating values of optical transmission selectively for all zones. In the method and apparatus, an auxiliary optical modulator is made half-tone. The auxiliary optical modulator enables to carry out an iteration process of zonal compression of the dynamic range of light brightness between local regions, coming from the scene into the aperture of the measuring photodetector, operation of which is invariable on the linear section of the transfer characteristic at the operating point with maximum slope. |
 Light-sensitive composition for light filters for protective and preventive purposes / 2466173Light-sensitive composition contains 2,2-n-dianisyl-5,6-benzo-[2H]-chromene and 1,3,3-trimethyl-6'-formyl-8'-allyl-spiro-indoline-2,2'-[2H]-chromene in molar ratio 1:0.8-1.6, respectively. Photochromic polymer materials obtained from said composition have optimum optical properties needed to satisfy physiologically based requirements for protective and preventive optical materials: when illuminated with daylight, they "cut" off the spectral region from 400 to 555 nm, while keeping intensity of light incident on eyes with wavelength greater than 555 nm at a level of less than 30%, and in conditions of low-intensity dusk illumination provide full transmission of light with wavelength greater than 400 nm. |
 Stabilisation of photochromic systems / 2405793Invention discloses photochromic compositions containing polymer material, a photochromic dye, hydroxyphenyltriazine UV radiation absorber and an optional light stabiliser selected from a group of sterically hindered amines. |
 Composition hardened by polymerisation / 2360932Described is composition hardened by polymerisation, containing 100 wt parts of composition, including from 10 to 80% wt, of bifunctional monomer, such as 2,2-bis(4-methacryloyloxypolyethoxyphenyl)propane; from 1 to 15% wt, of polyfunctional monomer, such as trimethaclylate trimethylpropane; from 5 to 89% wt, of polymerised monomer, different from first two, for instance diacrylate tetraethylene glycol; from 0.001 to 5 wt parts of chromane; and from 0.001 to 0.5 wt parts of light-stabiliser, such as bis(2,2,6,6-tetramethyl-4-pyperidyl)sebacinate. Also described is method of obtaining of hardened product and hardened product. |
 Glasses for safe driving / 2350989Invention is related to the field of optical instrument-making. Technical result is provided by the fact that anti-blinding glasses comprise frame, oculars with polarisation filter, liquid-crystal light modulator (LCLM) of rectangular shape, which is made of autonomously controlled cells, photoelectric cell. At that according to invention along half-perimeter of LCLM, in compliance with rows of LCLM-cells, horizontal and vertical rows of photoelectric cells are located, being installed at different angles and oriented in ocular plane so that at least one LCLM cell that lies on straight line passing through central area of eye ground and light source correspond to two photoelectric cells, one from vertical and one from horizontal row that register the most intense light flux from light source located in coverage area. |
| Plastic lens and method for making the same / 2283765 Plastic lens intended to absorb ultraviolet light with wavelength around 400 nm may be made from composition comprising (A) lens material monomer containing diethylene glycol bis(allyl) carbonate, (B) organic peroxide-based polymerization initiator, (C) cobalt compound selected from at least taw following: CoO-Al2O3 and CoO-Al2O4, and (D) at least one ultraviolet light-absorbing compound selected from 2-hydroxy-4-octyloxybenzophenone, 2,2',4,4'-terahydroxy-4-octyloxybenzophenone, and 2,2',4'-trihydroxy-4-octyloxybenzophenone. Invention also concerns lens manufacture method comprising: mixing compartment A, compartment B, fluid with cobalt containing compartment C with dispersant, and compartment D; pouring resulting mixed fluid into mold; and polymerization of the fluid in mold to form plastic lens. |
 Antiglaring spectacles for drivers / 2274439Spectacles comprises rim, glasses, and darkening semitransparent screens that overlap a part of the glasses. The darkening semitransparent screens are applied to the left halves of the both glasses of the spectacles from the side of oncoming vehicles from the vertical symmetry axis, passing through the optical center of the glasses, to the spectacles rim. The bridge between the glasses has two slides and adjusting screw with left and right threads for adjusting the distance between the centers. |
 Counter-dazzling glasses / 2273039Counter-dazzling glasses have frame with glasses, protective screen with cells and a matrix of light-sensitive elements, electrically connected to protective screen, additionally included is infrared eye pupil position indicator, generating signal under effect from infrared radiation from pupil, gate matrix with normally darkened cells and slit formed in it imitating eye pupil position, adjusting assemblies. Gate matrix is electrically connected to infrared pupil position indicator through adjustment assemblies, is mounted with possible letting of dazzling radiation through slit formed in it onto matrix of light-sensitive elements and following transmission of signal to it for darkening of protective screen cells for protecting pupil from dazzling radiation. |
 Plastic lens and process of making plastic lens / 2271026Process of making plastic lens related to techniques used for making lenses which can be applied in ophthalmology and optical engineering. Plastic lens proposed is capable if absorbing UV radiation. Lens has light yellow color. Plastic lens has plastic substrate based on derivation of benzophenone which is presented by formula I given in the description, where R is linear or branched alkyl group having 2 to 12 atoms of carbon or alkoxyl group having 2 to 12 atoms of carbon. |
 Goggles-trainers / 2270467Goggles-trainers can be used for production of vision devices, for example, of goggles for improving and correcting vision. Goggles-trainer has frame and lenses made for formation of transparent holes onto non-transparent background. Lenses are made in form liquid crystal screens connected to microchip. Versions of selected non-transparent arrays are put into memory of microchip. Any array has transparent holes of specific size. To control size of transparent holes, illumination detector and range finder are introduced into goggles. Range finder and illumination detector are connected with microchip. To change spectral characteristics of liquid crystal screens depending on illumination, light spectral composition detector is introduced into goggles which detector is connected with microchip. Besides, microchip is connected with power supply and control buttons. Lenses are coated with toned film having specific spectral characteristics. |
 Colour filter substrate and liquid crystal display device / 2472187Present colour filter substrate has a structure wherein adjacent colour filters have corresponding protrusions which protrude towards each other and are in contact with each other on a light-protective element, a structure wherein regions of the colour filter for adjacent points of the same colour are partially joined on a protective element, or a structure wherein said structures are joined. |
 Colour filter substrate and liquid crystal display device / 2469362Colour filter substrate has a first coloured layer of a display element, a light-screening layer and a second coloured layer of a display element, lying side by side on the substrate. The light-screening layer includes a first wide part and lies such that it partially overlaps the edge of the first coloured layer of the raster element and the second coloured layer of the raster element. The first wide part includes a protrusion which protrudes to the first coloured layer of the image element. The colour filter substrate includes a first multilayer cross-piece having a first wide part and a second coloured layer. The first coloured layer of the cross-piece has a colour similar to that of the first coloured layer of the image element, and is connected to the first coloured layer of the raster element only at the base of the protruding part. |
 Protective light filter / 2458369Protective light filter has a component which absorbs laser radiation and a reflecting narrow-band dielectric coating. In order to operate in the visible spectral region, the absorbing component of the light filter is made from material which resonantly absorbs at laser wavelengths, having high optical density in the region of laser radiation spectral lines. The reflecting narrow-band dielectric coating of the disclosed device with reflection coefficient on laser wavelengths R≥0.95 is deposited on the surface of the absorbing component on the side where laser radiation falls on the light filter. |
 Composition with high resistivity / 2408041Described is a black matrix formed by depositing a curable coating composition on a substrate, followed by curing, development and drying of the coating. The curable coating composition contains binder and at least one modified pigment which contains at least one organic group bonded to the pigment and having formula -X-I, where X is directly bonded to the pigment and denotes an arylene or heteroarylene or alkylene group, I is a non-polymer group containing at least one ion group or at least one ionisable group. The cured coating contains approximately 30 wt % or more of the modified pigment in terms of the weight of the cured coating. The invention also describes a curable coating composition, a cured coating, a method of increasing resistivity of the coating and regulation method thereof. |
 Uv-protective composition for polyesters / 2405178Composition which absorbs UV-radiation at 390 nm contains a matrix based on one or more polyesters selected from a group consisting of polyethylene terephthalate, polyethylene isophthalate, polypropylene terephthalate, polybutylene terephthalate, poly(1,4-cyclohexylene dimethylene terephthalate) and polyethylene-2,6-napthylene dicarboxylate and mixtures thereof, where polyethylene naphthalate (PEN) is present in an amount of approximately 0.2 wt % in terms of total weight of the composition, and polyoxyalkylene UV-absorber is present in amount of approximately 0.1 wt % in terms of total weight of the composition, methods of preparing said composition (versions) and a product which prevents passage of UV light at 390 nm. |
 Neutral light filter / 2402050Neutral light filters are used in optical devices, particularly as attenuators which reduce radiation intensity. The neutral light filter consists of alternating layers of crystalline gallium monoselenide GaSe and gallium nanoparticles. Said light filter has a holder which has a heat carrier channel. |
 Hologram filter (versions) / 2376617Hologram filter relates to devices for filtering optical radiation. The filter consists of a transparent substrate, coated with a transparent polymer film which contains a reflection hologram, and a protective layer adjacent to the polymer film. In the first version, the protective layer is in form of an optical wedge, the working surface of which, except the radiation inlet window in the thin part of the wedge, is coated with a reflecting layer. In the second version the filter additionally contains a mirror, placed opposite the reflecting hologram with possibility of varying the angle between the mirror and the hologram. Upon double passage of radiation through the reflecting hologram at different angles of incidence, a narrow spectral peak of the passing radiation is obtained at the output. |
 Optic device / 2339061Optic device includes objective lens and case, and at least one device with electrically adjustable light absorption or light reflection, including at least two parts, where each part can change light flux pass rate depending on electric signal magnitude fed to the part, and at least one correction matrix consisting of at least two elements, each element connected electrically to respective part of device with electrically adjustable light absorption or light reflection, and can produce electric signal, depending on intensity of incident light flux. |
 Optical filter / 2331907Optical filter includes an active element of zinc-cadmium telluride Cd1-xZnxTe (0≤x<1) nanoparticle layer with nanoparticle size of 5-10 nm and layer thickness of 30-50 nm, the layer being grown on a passive element surface of crystal zinc telluride (ZnTe). Variable "x" in the formula Cd1-xZnxTe allows giving specific spectral cutoff position within the wavelength range of 0.550 micron (x=1) to 0.838 micron (x=0). |
 Neutral colour filter / 2331906Neutral colour filter consists of intermittent layers of crystal gallium monoselenide GaSe and gallium nanoparticles and maintains uniform attenuation of radiation with wavelength of 2.5-15 micron. Attenuation rate can be adjusted by increasing or reducing number of gallium particle layer. |
 Fastening device with resilient tape and item containing such device / 2491874Disclosed is a fastening device locking resilient tape including multiple engagement sections positioned in the longitudinal direction so that to enable unlocking. The fastening device includes a fastener holder and a pair of sliding fasteners mounted on the fastener holder so that to enable sliding. The fastener holder includes a pair of stop pins spaced relative each other and a pair of guide surfaces. The pair of resilient tapes is accordingly suspended on the stop pins. The guide surfaces are slanted in opposite directions relative to the plane passing through the stop pins pair. The sliding pin has a ratchet-wheel projection designed so that to enable engagement with the resilient tape engagement section as well as a sliding surface designed so that to enable surface junction with the fastener holder guide surface. The sliding fastener may move between the unlocked position (wherein the engagement section pushes the ratchet-wheel projection in the first direction to ensure the resilient tape movement between the ratchet-wheel projection and the spot pin) and the locked position (wherein the engagement section pushes the ratchet-wheel projection in the second direction (opposite to the first one) so that the ratchet-wheel projection presses the resilient tape to the stop pin. |
FIELD: physics.
SUBSTANCE: method involves layer-by-layer sputtering of metals on lenses. Successive magnetron sputtering of Ti and Cu metal is carried without temperature action, wherein composition of said metals enables to obtain an effect of colour change under the action of UV radiation from transparent to orange in order to protect the eyeball from burns.
EFFECT: combining the functions of protection from mechanical damages and UV radiation during treatment, which increases efficiency of the dentist.
1 dwg
The invention relates to medical technique. Currently the patient in dentistry are two kinds of plastic glasses: medical transparent dental glasses and serve to protect the eyeball from mechanical and chemical damage, and dental glasses with orange coating to prevent burns when hit by UV rays while using helium lamp in the process of tooth filling. And he is another kind of dental points are widely distributed on the market of dental technology (us - China, the company «» - Ukraine).
Disadvantage of treatment in dentistry is the discomfort associated with the change of one type of points to another when working with the same patient during treatment.
The aim of the invention is obtaining this type of dental points, combining the functions of protection from mechanical damage and from ultraviolet radiation during treatment, which allows to increase productivity of a dentist.
This goal is achieved by replacing the plastic lenses of the lens glass with sprayed protective coating, providing simultaneous protection against mechanical influences and ultraviolet. The effect of spraying of protective coating in an amber color when hit ultraviolet rays, thereby protecting the eyeball from the burn. The essence of the method consists in that on the surface of the glass is formed by 2-layer metallization by magnetron sputtering of a certain thickness (Figure 1). Spraying is carried out on the installation magnetron sputtering «Leybold-Z600» at room temperature under the following conditions: the first layer metal - titanium (Ti), the deposition - 5 min, the thickness of the sprayed layer is 30 + or-2 nm; the second layer metal - copper (cu), the spraying of 3 min and thickness 75±5 nm.
The proposed method allows obtaining a protective layer lenses, which can reflect ultraviolet light, thus protecting the eyeball from the burn.
The essence of the invention of the following examples.
Example 1. The process is carried out at the installation magnetron sputtering in argon with a flow rate of 150 l/H. the First layer metal - titanium (Ti), the spraying of 10 min, thickness spraying 67 nm; the second layer metal - copper (cu), the spraying of 5 minutes, the thickness of the spraying 120 nm.
Example 2. The process is carried out at the installation magnetron sputtering in argon with a flow rate of 150 l/H. the First layer metal - titanium (Ti), the spraying of 5 min, deposition thickness of 30 nm; the second layer metal - copper (cu), the spraying of 3 min, thickness spraying 75 nm.
Example 3. The process is carried out at the installation magnetron sputtering in argon with a flow rate of 150 l/H. the First layer metal - titanium (Ti), the spraying of 3 min, thickness spraying 20 nm; the second layer metal - copper (cu), the spraying of 2 min, deposition thickness of 50 nm. Literature
1. http://www.hivcc.com
2. http://www.mirou.ua
A method of manufacturing lenses for dental points, including layer-by-layer coating on the lenses metals, wherein the conduct consistent magnetron deposition of metals Ti and C without thermal effects, a composition which allows you to get the effect of a change color under ultraviolet radiation from transparent to orange for the protection of the eyeball from the burn.