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31 results about "Ophthalmic optics" patented technology
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Ophthalmic analysis apparatus and ophthalmic analysis program
ActiveUS20140112562A1Easy for examinerEasy to analyze resultsCharacter and pattern recognitionEye diagnosticsTomographyOphthalmic optics
An ophthalmic analysis apparatus is the ophthalmic analysis apparatus for obtaining analysis results of tomography images of a subject eye acquired at different dates by ophthalmic optical coherence tomography and outputting statistical information formed based on time-series data of the analysis results, and includes instruction receiving means for receiving selection instructions to select an analytical region on a subject eye from an examiner, and control means for respectively acquiring analysis results in the analytical region selected by the instruction receiving means with respect to tomography images acquired at the different dates and outputting the statistical information.
Owner:NIDEK CO LTD
Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics
InactiveUS20050142350A1Improve adhesionImprove scratch resistanceRecord information storagePhotomechanical treatmentMaterials scienceOphthalmic optics
Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics
Owner:ESSILOR INT CIE GEN DOPTIQUE
Process for treating an ophthalmic lens
InactiveCN1871180AReduce or even eliminate change issuesCoatingsThin material handlingEye lensChemical modification
The present invention relates to a process for treating an ophthalmic lens comprising two main sides the first one of which comprises a thin external organic or inorganic layer, comprising:- at least one treatment step for the second lens side through energetic and / or reactive species capable to perform a surface physical attack and / or chemical modification,- in option, at least one or more steps for depositing inorganic or organic layers carried out simultaneously or subsequently to the treatment step through said energetic and / or reactive species,characterized in that before the treatment step through energetic and / or reactive species, a deposition of a temporary protective layer is performed onto the thin external organic or inorganic layer.Application to ophthalmic optics.
Owner:ESSILOR INT CIE GEN DOPTIQUE
Small fundus camera
The invention provides a small fundus camera, and belongs to the technical field of medical ophthalmological optical instruments. The small fundus camera comprises a lens cone; an ocular objective lens, a camera lens group and a focusing module are sequentially arranged in the lens cone; the focusing module can be movably connected to the lens cone along the central axis direction of the lens cone; the focusing module is provided with an imaging detector and a fixation device; the imaging detector is arranged on the central axis of the lens cone; the fixation device is arranged on the side wall of the lens cone; an illuminating lamp is also arranged in the lens cone; and the illuminating lamp is positioned between the ocular objective lens and the camera lens group, faces the ocular objective lens, and is arranged far away from the central axis of the lens cone. According to the small fundus camera in the invention, the illuminating lamp is arranged in the lens cone in an inclined illuminating mode; furthermore, the fixation device is arranged in the focusing module, and serves as an identification point of a focusing system; the light path structure is simplified; and the volume of the whole camera is greatly reduced.
Owner:SHANGHAI EAGLEVISION MEDICAL TECH CO LTD
Opthalmological optical element and method for constructing opthalmological optical element
The present invention relates to an ophthalmological optical element (1), in particular a spectacle lens, comprising: a first refractive optical substrate (10) which has a positive or negative first optical power; a first diffractive optical element (21) which has a second optical power; a second diffractive optical element (22) which has a third optical power, wherein the first diffractive optical element (21) and the second diffractive optical element (22) have an opposing optical power, and wherein the first diffractive optical element (21) and the second diffractive optical element (22) interact at least partially achromatically. Furthermore, the present invention relates to a method for constructing an ophthalmological optical element of this type, and spectacles and a head-mounted display device comprising an ophthalmological optical element of this type.
Owner:TOOZ TECH GMBH
Calibration tool for ophthalmology optical imaging and biological parameter measuring instrument and using method of calibration tool
The invention relates to a calibration tool for an ophthalmology optical imaging and biological parameter measuring instrument and a using method of the calibration tool. The calibration tool comprises a first lens, a second lens and a PDMS mold body, wherein the first lens comprises a first curve and a first plane; the second lens comprises a second curve, a second plane and a third plane, and the second plane and the third plane are parallel; resolution ratio testing microspheres which are uniformly distributed are in the PDMS mold body; the first plane is attached to the second plane; the PDMS mold body is attached to the third plane and a part of the second curve; an empty chamber is formed between the third plane and the PDMS mold body; the first lens, the second lens, the PDMS mold body and the empty chamber are symmetric about the same axis; the curvature radius of the first lens is smaller than that of the second lens; a visual field angle scale and a resolution ratio line aligning pattern are arranged between the second curve and the PDMS mold body; and an image calibration line is arranged on the third plane.
Owner:NAT INST OF METROLOGY CHINA
Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics
InactiveUS7560508B2Improve scratch resistanceImprove optical qualityCoatingsThin material handlingMaterials scienceOphthalmic optics
Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics.
Owner:ESSILOR INT CIE GEN DOPTIQUE
Thermally influenced changeable tint device
A device is provided. The device includes a base ophthalmic optic, a changeable tint element disposed over the base ophthalmic element, and a transparent heating element adapted to heat the changeable tint element. The transparent heating element is preferably adapted to heat the entire area of the changeable tint element.
Owner:ESSILOR INT CIE GEN DOPTIQUE
Spatial self-positioning ophthalmic optical coherence tomography system
InactiveCN112842252AReal-time identification and trackingReduce the difficulty of operationEye diagnosticsOphthalmology departmentVisual servoing
The invention provides a spatial self-positioning ophthalmic optical coherence tomography system which comprises a first depth camera, a second depth camera, an RGB camera, a mechanical arm, a main control mechanism, an OCT scanning probe and a machine shell, the main control mechanism is installed in the machine shell, is in signal connection with the mechanical arm and is used for driving the mechanical arm, the first depth camera is installed on the machine shell, one end of the mechanical arm is installed on the machine shell, the other end of the mechanical arm is in driving connection with the OCT scanning probe, and the second depth camera and the RGB camera are both installed on the OCT scanning probe. A human face, human eye and pupil three-level positioning mode is adopted, the depth camera and the RGB camera are used as a visual servo positioning system for three-level positioning of the mechanical arm, target human eyes are recognized and tracked in real time, positioning is accurate, performance is reliable, manpower is replaced with the mechanical arm, the automation degree is high, the operation difficulty of doctors is lowered, the examination efficiency is improved, and the spatial self-positioning ophthalmic optical coherence tomography system can be suitable for a scene in which a traditional table type ophthalmology OCT instrument cannot be used.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method for fully automatically measuring eyeball parameters
ActiveCN113397476ASmall footprintFast measurementEnergy saving control techniquesOthalmoscopesPupil diameterLight spot
The invention discloses a method for fully automatically measuring eyeball parameters. The problem of an ophthalmic optical biological measuring instrument in the prior art that the focusing speed is low and an optical system is complicated in structure is solved. The method for fully automatically measuring the eyeball parameters comprises the following steps: S1, starting up light source equipment; S2, carrying out light source imaging; S3, carrying out human eye focusing; S4, measuring the eyeball parameters; and S5, correcting a corneal curvature radius. Whether focusing is accurate or not can be judged according to the offset of a light spot formed by the light source imaging during human eye focusing, the judgment is relatively convenient, the focusing is relatively rapid, the corneal curvature radius, the cornea transverse diameter, the pupil diameter and the eye axis diameter of eyes can be measured synchronously, the measuring speed is increased, multiple functions can be achieved through a single device, the structure is compact, and the practicability is good; and meanwhile, the cornea curvature radius can be corrected through a correction formula according to different corneas after measurement, so that measurement can be more accurate.
Owner:浙大宁波理工学院
Ophthalmic optical coherence tomography scanner and eye scanning image acquisition method
PendingCN111643049AImprove detection efficiencyImprove detection accuracyOthalmoscopesOptical scannersIris image
The invention discloses an ophthalmic optical coherence tomography scanner and an eye scanning image acquisition method, and relates to the field of medical instruments. The ophthalmic optical coherence tomography scanner comprises a controller, a base, a driving mechanism arranged on the base and an optical head assembly arranged on the driving mechanism, wherein the optical head assembly is provided with an iris camera group; the controller can position the ocular surface according to an iris image, collected by the iris camera group, of a detected object and control the driving mechanism todrive the optical head assembly to move according to a positioning result, so that the optical head assembly can obtain an eye scanning image of the detected object. The position of the optical headassembly is automatically adjusted instead of being manually adjusted, so that the effect of improving the detection efficiency and precision of the optical head assembly is achieved.
Owner:SUZHOU BIGVISION MEDICAL TECH CO LTD
Lying type ophthalmic optical observation bracket
ActiveCN111759485AStable observation environmentEasy transferOperating tablesSurgical microscopesMedical equipmentOphthalmology department
The invention discloses a lying type ophthalmic optical observation bracket, and belongs to the technical field of ophthalmic medical equipment. The observation bracket includes a fixing base, a rotating rod I, a rotating rod II, a rotating joint, an optical support, and adjusting device and an optical observation device; an adjusting wheel is rotated to adjust angles and rotates to drive an adjusting screw rod to rotate; the adjusting screw rod is in screw transmission with a rotating wheel; the rotating wheel drives a shaft II to rotate; the shaft II rotates to drive a bevel gear II to rotate; and the bevel gear II is in meshing transmission with a bevel gear I. Thus, a cylindrical jacket frame is driven to rotate, and the purpose of adjusting optical observation angles and fixing the optical observation device can be achieved. The observation bracket is fixed on a hospital bed and can be dismounted, so that the observation bracket is convenient in transferring; the provided observation bracket is mainly applied when the observation device and patients cannot sit up during ophthalmic surgery; and the observation bracket is convenient in using and simple in operation.
Owner:昌乐县妇幼保健院
Method of producing a substrate which is coated with a mesoporous layer and use thereof in ophthalmic optics
ActiveUS8182866B2Improve stabilityTime stableRadiation applicationsVacuum evaporation coatingOrganic solventReactive agent
The invention relates to a method of producing a substrate which is coated with a mesoporous layer and to the use thereof in ophthalmic optics. The inventive method comprises the following steps comprising: preparing a precursor sol containing (i) a precursor agent that is selected from compounds having formula M(X)4 (I), in which X is a hydrolysable group and M represents silicon or a tetravalent metal and mixtures thereof, (ii) at least one organic solvent, (iii) at least one pore-forming agent and (iv) water; depositing a film of the precursor sol on a main surface of the substrate; optionally consolidating the mesoporous structure of the deposited film; eliminating the pore-forming agent; and recovering the substrate coated with the mesoporous layer. The method is characterized in that: (i) the pore-forming agent is eliminated at a temperature of less than or equal to 150° C.; and (ii) the method comprises a step involving the introduction of at least one reactive agent bearing at least one hydrophobic group, before the deposition step and / or after said step.
Owner:ESSILOR INT CIE GEN DOPTIQUE
Portable non-mydriasis fundus camera
The invention discloses a portable non-mydriasis fundus camera, and relates to the field of medical ophthalmic optics instruments. The portable non-mydriasis fundus camera comprises an optical systemand a control unit, wherein the optical system comprises a positioning light path, a focusing light path and an illumination imaging light path; a group of vari-focus lens and an image sensor are shared by the positioning light path, the focusing light path and the illumination imaging light path; the positioning light path and the focusing light path respectively comprise one or more dual-opticalwedges; and the control unit is used for controlling the positioning light path, the focusing light path and the illumination imaging light path, and is used for performing treatment on the shot fundus images. The portable non-mydriasis fundus camera disclosed by the invention is small in volume, and convenient to carry, can also realize quick positioning of working distance and accurate focusing, and the photo forming quality and photo forming rate are simultaneously guaranteed; and a user can safely and conveniently use the portable non-mydriasis fundus camera.
Owner:南京览视医疗科技有限公司
Ophthalmic optical imaging diagnostic system
ActiveCN113545744ADoes not affect functionPerformance is not affectedOthalmoscopesOphthalmology departmentLight beam
The invention relates to the field of ophthalmology imaging, in particular to an ophthalmic optical imaging diagnostic system. The ophthalmic optical imaging diagnostic system comprises a scanning imaging module, and the scanning imaging module comprises an anterior segment scanning imaging mode and a fundus scanning imaging mode; in the fundus scanning imaging mode, the scanning imaging module is sequentially provided with a first lens group, a second lens group and a third lens group along the emission direction of a light beam in an imaging light path; in the anterior segment scanning imaging mode, the first lens group and the third lens group are simultaneously removed from the scanning imaging module. According to the ophthalmic optical imaging diagnostic system, the anterior segment imaging mode and the fundus imaging mode can be switched by switching the lens group in one light path, normal functions and use of other light paths are not affected, and operation is simpler and more convenient.
Owner:TOWARDPI (BEIJING) MEDICAL TECH LTD
Ophthalmic Optical Imaging and Biological Parameter Measuring Instrument Calibration Tool and Using Method
The invention relates to a calibration tool for an ophthalmic optical imaging and biological parameter measuring instrument and a method for using the same. The calibration tool includes: a first lens with a first curved surface and a first plane; a second lens with a second curved surface and parallel second and third planes; and a PDMS phantom with a hollow chamber and a uniform Distributed resolution test microspheres, wherein the first plane and the second plane are bonded together, the third plane and the PDMS phantom are bonded together, the empty chamber is adjacent to the third plane, and the first lens, the second lens , the PDMS phantom and the cavity have a common axis, wherein the radius of curvature of the first lens is smaller than the radius of curvature of the second lens, and the bottom radius of the PDMS phantom is smaller than the radius of the third plane, wherein the second curved surface has a visual Field angle scale and resolution line pair pattern with spoke-shaped resolution test pattern and thin lines for image registration on the third plane.
Owner:NAT INST OF METROLOGY CHINA
Method for collecting fundus images and fundus camera
PendingCN112006650AImprove experienceGuaranteed shooting qualityPhotographyOthalmoscopesBeam splitterOphthalmology department
The embodiment of the invention discloses a method for collecting fundus images and a fundus camera, and relates to the technical field of medical ophthalmic optical instruments. The method specifically comprises the following steps: an illumination imaging light path is started, and a light beam of the illumination imaging light path is at least reflected by a polarizing beam splitter, then is projected to an aspheric objective lens and then enters pupils to the fundus; light reflected by the fundus sequentially passes through the aspheric objective lens and the polarizing beam splitter and enters an observation control device; and the observation control device supports real-time preview of fundus images, and the fundus images are collected after the work distance positioning is completed. By the adoption of the method, self-adaption to the pupil size is achieved, the observed preview images are consistent with the shot fundus images, adjustment can be conducted at any time accordingto the preview effect, shooting time is shortened while shooting quality is guaranteed, the whole shooting process is simple and convenient, imaging quality is high, and user experience is good.
Owner:南京览视医疗科技有限公司
Free-form surface single-focus astigmatism lens for hyperopia correction and design method
PendingCN114815306ASmall sizeReduce the overall diameterSpectales/gogglesOptical partsPupillary distanceAspheric lens
The invention belongs to the field of ophthalmic optics, and provides a free-form surface single-focus astigmatism lens for hyperopia correction and a design method, the lens is a circular positive lens, the outer surface is a spherical surface or an aspheric surface, and the inner surface is a toroidal surface; the method comprises the following steps: firstly, comprehensively considering a single-eye independent pupil distance, a nose bridge width, a pupil height, a lens edge cutting margin, selected lens frame data and prescription parameters of a lens fitting person to obtain the minimum diameter of the lens; the cutter edge position is set according to the base arc position of the scattered sheet in the toroidal curved surface, so that the cutter edge position is close to the optical center of the lens as far as possible, the center thickness of the lens is reduced to the maximum extent, and the lens subjected to edge cutting and racking obtains the optimal light and thin effect; the inner surface of the lens adopts a toroidal curved surface design, so that off-axis aberration at the periphery of the lens is eliminated, the clear view field at the periphery of the lens is expanded, and the contrast sensitivity of imaging is enhanced; compared with an aspheric lens with an optical design surface on the outer surface, the aspheric lens has the advantage of comfort.
Owner:SUZHOU MASON OPTICAL CO LTD +1
Process for treating an ophthalmic lens
InactiveCN1871180BReduce or even eliminate change issuesCoatingsThin material handlingEye lensChemical modification
Owner:ESSILOR INT CIE GEN DOPTIQUE
Ophthalmic optical testing system and method
PendingUS20210109375A1Improve rendering capabilitiesBetter of optionsOptical axis determinationLens position determinationOptical axisPupil
An ophthalmic optical testing system / method allowing human eye characteristics modeling and evaluation of a lens under test (LUT) is disclosed. The system and method incorporate an axial positioning platform (APP) allowing tip / tilt / rotation about a vertical or horizontal axis of an optical retention framework (ORF) containing a cassette support tower (CST). The CST retains a pupil lens fixture (PLF) incorporating pinhole or light blocking device (POL). The ORF mates to a corneal and test longitudinal axis positioning platforms (LAP) that are attached respectively to a corneal lens fixture (CLF) retaining corneal lens optics (CLO) and a test lens fixture (TLF) retaining an lens under test (LUF) and LUT. The LAPs allow longitudinal adjustment of lenses along a common optical axis (LOA) pathway. APP positioning, LAP adjustments, and selection of CLO / PLO / LUT permit LOA optical characteristics to be adjusted and tested.
Owner:PERFECT IP
A flat lay ophthalmic optical observation stand
ActiveCN111759485BStable observation environmentEasy transferOperating tablesSurgical microscopesMedical equipmentOphthalmology department
The invention discloses a flat-bed ophthalmic optical observation support, belonging to the technical field of ophthalmic medical equipment, comprising a fixed seat, a first rotating rod, a second rotating rod, a rotating joint, an optical support, an adjustment device, an optical observation device, and a rotating adjustment wheel to adjust The rotation of the adjustment wheel drives the rotation of the adjustment screw, the adjustment screw and the screw of the wheel drive, the wheel drives the second shaft to rotate, the rotation of the second shaft drives the second bevel gear, and the second bevel gear meshes with the first bevel gear to drive, thereby driving the cylindrical The sleeve is rotated to achieve the purpose of adjusting the optical observation angle and fixing the optical observation device. The device is fixed on the hospital bed and is detachable for easy transfer. It is mainly used in the observation device during ophthalmic surgery and when the patient cannot sit and stand. Ophthalmic observation stand, the device is easy to use and easy to operate.
Owner:昌乐县妇幼保健院
Method and device for measuring an optical lens for individual wearing situations by an user
ActiveCN111971524AReliable determinationHigh clarityUsing optical meansRefractometersOphthalmology departmentEyewear
The present invention relates to the field of ophthalmic optics, in particular a device (10) for measuring the optical effect of an ophthalmic lens (100), in particular a spectacle lens, arranged in ameasurement volume (200), the device comprising a display system (20) configured for displaying a test structure (21); an image acquisition system (30) configured for acquiring image data of the teststructure from multiple viewpoints (31, 31', 31"), using imaging optical paths (32) which pass through the lens (100); and a computer unit (40), wherein the computer unit is configured for: determining a three-dimensional shape of the lens (100) on the basis of the image data; and calculating an optical effect of the lens (100) on the basis of its three-dimensional shape, wherein the lens (100) is a spectacle lens and the optical effect of the spectacle lens is calculated for a predetermined wearing position by an user. The present invention further relates to a corresponding method and to acomputer program.
Owner:CARL ZEISS VISION INT GMBH
System and method of calculating visual performance of an ophthalmic optical correction using simulation of imaging by a population of eye optical systems
A method of calculating clinical performance of an ophthalmic optical correction using simulation by imaging a series of objects of different sizes by each of a plurality of eye optical systems, each of the eye optical systems including the ophthalmic optical correction, the method comprising A.) at an object distance, calculating a set of indicia of image quality, each indicium of the set of indicia corresponding to an object in the series of objects when it is imaged by a given one of the plurality of eye optical systems, B.) at the object distance, comparing the set of indicia to a threshold to determine a just-discernable object size for the given one of the plurality of eye optical systems, and C.) repeating steps A and B for each eye optical system in the plurality of eye optical systems.
Owner:BAUSCH & LOMB INC
An ophthalmic optical imaging diagnosis system
ActiveCN113545744BPerformance is not affectedSimple structureOthalmoscopesOphthalmology departmentRadiology
The present application relates to the field of ophthalmic imaging, in particular to an ophthalmic optical imaging diagnostic system, including a scanning imaging module, which includes an anterior segment scanning imaging mode and a fundus scanning imaging mode; The emission direction of the light beam in the optical path is provided with the first lens group, the second lens group and the third lens group in sequence; in the anterior segment scanning imaging mode, the first lens group and the third lens group are removed from the scanning imaging module at the same time. The present application can switch the lens group in one optical path to realize the switching between the anterior segment imaging mode and the fundus imaging mode, without affecting the normal function and use of other optical paths, making the operation simpler and more convenient.
Owner:TOWARDPI (BEIJING) MEDICAL TECH LTD
Ophthalmic optical system, ophthalmic device, and ophthalmic system
An optical system is capable observing a peripheral field away from a visual axis and includes a reflection mirror unit forming an image of an examined eye with two concave mirrors in an opposing arrangement facing each other at the examined eye side, this being the upstream side, of a first optical unit and a second optical unit. In the reflection unit there is a conjugate relationship between one focal point thereof and another focal point thereof. By forming an image of the examined eye using the reflection unit a distance can be secured between the examined eye and the optical system and a wide range of the examined eye can be observed.
Owner:NIKON CORP
Method for manufacturing a substrate coated with mesoporous antistatic film, and use thereof in ophthalmic optics
InactiveUS9534160B2Improve mechanical propertiesImprove adhesionSilicaOther chemical processesElectrostatic coatingRefractive index
The present invention relates to an article comprising a substrate having a main surface coated with a mesoporous antistatic coating, said coating having a refractive index lower than or equal to 1.5, and a silica based matrix functionalized by ammonium groups, said matrix having a hydrophobic character. Under certain conditions, the mesoporous antistatic coating is a single-layer anti-reflection coating or is part of a multi-layer anti-reflection coating. This invention further relates to a method for manufacturing said article, and to the use of a mesoporous coating having a silica based matrix functionalized by ammonium groups, as an antistatic coating.
Owner:ESSILOR INT CIE GEN DOPTIQUE
Method and apparatus for measuring optical lenses for various wearing situations of users
ActiveCN111971524BReliable determinationHigh clarityUsing optical meansRefractometersOphthalmologyEyewear
The invention relates to the field of ophthalmic optics, in particular to a device (10) for measuring the optical effect of an optical lens (100), in particular a spectacle lens, arranged in a measurement volume (200), the device comprising a display system (20) , the display system is configured to display a test structure (21); an image capture device (30) configured to use an imaging optical path (32) through the lens (100) from a plurality of viewpoints ( 31, 31', 31") to acquire image data of the test structure; and a computer unit (40), wherein the computer unit is configured to: determine a three-dimensional shape of the lens (100) based on the image data; and based on the image data The three-dimensional shape of the lens (100) calculates the optical effect of the lens, wherein the lens (100) is a spectacle lens and the optical effect of the spectacle lens is calculated for a user's intended wearing position. The present invention further relates to a corresponding method and a computer program.
Owner:CARL ZEISS VISION INT GMBH
Method and device for obtaining optic disc area from ophthalmic optical coherence tomography images
Owner:CHONGQING BIO NEWVISION MEDICAL EQUIP LTD
Method and device for obtaining optic disk area through ophthalmic optics coherence tomography images
The invention discloses a method and device for obtaining the optic disk area through ophthalmic optics coherence tomography images. The precise optic disk area is fast to obtain through the simple method and used for clinical analysis. The method comprises the steps that S101, the optic disk initial boundary circle is fitted after conversion is carried out on optic disk reference points of the multiple OCT images of an optic disk part many times; S102, moved coordinates of the k optic disk reference point are obtained through calculation and recorded into a storage container; S103, according to the moved coordinates of the k optic disk reference point, a refitted optic disk boundary circle is obtained by fitting the optic disk boundary circle; the S102 and the S103 are repeated, and all the optic disk reference points are moved to the correct position; S104, the area of the refitted optic disk boundary circle is calculated. The operation of selecting the optic disk reference points needing to be corrected is simple and accurate, the optic disk reference points found through the algorithm can be corrected to the accurate positions fast and conveniently, and accurate parameters like the optic disk area can be obtained through fast calculation after correction is finished.
Owner:CHONGQING BIO NEWVISION MEDICAL EQUIP LTD
Method for manufacturing a substrate coated with mesoporous antistatic film, and use thereof in ophthalmic optics
InactiveUS20160145479A1Improve mechanical propertiesImprove adhesionOther chemical processesProjector focusing arrangementRefractive indexSilica matrix
The present invention relates to an article comprising a substrate having a main surface coated with a mesoporous antistatic coating, said coating having a refractive index lower than or equal to 1.5, and a silica based matrix functionalized by ammonium groups, said matrix having a hydrophobic character. Under certain conditions, the mesoporous antistatic coating is a single-layer anti-reflection coating or is part of a multi-layer anti-reflection coating. This invention further relates to a method for manufacturing said article, and to the use of a mesoporous coating having a silica based matrix functionalized by ammonium groups, as an antistatic coating.
Owner:ESSILOR INT CIE GEN DOPTIQUE
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