WO2023227651A1 - Procédé et dispositif de mesure optique d'une surface optiquement active d'un corps d'échantillon au moins partiellement transparent - Google Patents

Procédé et dispositif de mesure optique d'une surface optiquement active d'un corps d'échantillon au moins partiellement transparent Download PDF

Info

Publication number
WO2023227651A1
WO2023227651A1 PCT/EP2023/063894 EP2023063894W WO2023227651A1 WO 2023227651 A1 WO2023227651 A1 WO 2023227651A1 EP 2023063894 W EP2023063894 W EP 2023063894W WO 2023227651 A1 WO2023227651 A1 WO 2023227651A1
Authority
WO
WIPO (PCT)
Prior art keywords
test specimen
reflection
fluid
highly viscous
measured
Prior art date
Application number
PCT/EP2023/063894
Other languages
German (de)
English (en)
Inventor
Regina LÖFFELMANN
Original Assignee
Rodenstock Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rodenstock Gmbh filed Critical Rodenstock Gmbh
Publication of WO2023227651A1 publication Critical patent/WO2023227651A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0207—Details of measuring devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
    • G01M11/025—Testing optical properties by measuring geometrical properties or aberrations by determining the shape of the object to be tested
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
    • G01N2021/9583—Lenses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/064—Stray light conditioning

Definitions

  • the present invention relates to a method and a device for the optical measurement of an at least partially transparent test specimen with an optically effective first surface and an opposite second surface in reflection geometry, as well as the use of a reflection-reducing, highly viscous fluid in such a method.
  • a surface of a test specimen can be scanned using an arrow height measuring device in order to create a profile of the surface.
  • a disadvantage of this tactile measurement is that it carries the risk of scratching the surface.
  • Contactless, optical methods are known as an alternative to these contact-based measuring methods. These methods include irradiating light onto the test specimen and detecting the light in reflection and/or transmission geometry that is changed by an optically effective surface of the test specimen.
  • the measurement result can be falsified or impaired by backside reflections, i.e. reflections on a surface of the test specimen that is opposite the surface irradiated with light.
  • Another way to reduce back reflection is to coat the back of the test specimen with a sealing wax.
  • removing the paint after measurement is time-consuming and requires the use of solvents that may be harmful to health and/or the environment.
  • the object of the present invention to provide an alternative method and a corresponding device for reducing a backside reflection during the optical measurement of an at least partially transparent test specimen with an optically effective first surface and an opposite second surface in reflection geometry to provide which does not have the disadvantages of the known methods.
  • the method should be easy to use and non-destructive.
  • a method for optically measuring an at least partially transparent test specimen with an optically effective first surface and an opposite second surface comprising the following steps: i) applying a reflection-reducing, highly viscous fluid to the second surface of the test specimen; ii) performing the optical measurement; and iii) detachment of the reflection-reducing, high-viscosity fluid.
  • the method according to the invention is used to optically measure an at least partially transparent test specimen with an optically effective first surface.
  • the test specimen to be measured does not have to be transparent over the entire extent of the first surface, but can, for example, have a non-transparent edge area.
  • the test specimen In order to be suitable for the method according to the invention, the test specimen must therefore only be transparent in the area relevant for the measurement.
  • test specimen is optically effective. This means that incident light rays are refracted at the first surface.
  • test specimens for which the method according to the invention is suitable include semi-finished products and finished products of optical lenses as well as casting molds made from (mineral) glass, in particular for optical lenses or their (semi-)finished products.
  • Finished lenses differ from semi-finished lenses in that a second surface, which is opposite the first surface, has also been ground and is therefore also optically effective.
  • the method according to the invention serves as a final check for the quality of the lens. Since, as explained in detail below, the method according to the invention can be carried out without causing damage and the highly viscous fluid can be removed from the test specimen using simple means, the method according to the invention is particularly suitable for measuring finished products of optical lenses.
  • the material of the test specimen is not particularly limited as long as it is at least partially transparent and at least one surface of the test specimen can be brought into an optically effective state.
  • the test specimen can be made of plastic or mineral glass.
  • test specimens made of mineral glass for example silicate glass
  • a rear reflection increasingly occurs when optically measured in reflection geometry, which makes it impossible to measure a test specimen without prior treatment of the back.
  • the method according to the invention is therefore particularly suitable for test specimens made of mineral glass.
  • the irradiated light is reflected on the first surface and the optical effectiveness of the first surface is determined based on the deviation of the reflected light from the irradiated light.
  • part of the irradiated light is not reflected on the first surface, but passes through it and hits the second surface of the test specimen and can be reflected on it.
  • the light used for measurement can, for example, be white or visible light or have a specific wavelength or wavelength range.
  • the light can be in a wavelength range of 380nm to 800nm or from 400nm to 780nm.
  • only wavelength ranges can also be used, for example ultraviolet light (UV-C: 100 to 280 nm, UV-B: 280 to 315 nm and / or UV-A: 315 to 380 nm), violet light with 380-450 nm , blue light 450-495 nm, green light 495-570 nm, yellow light 570-590 nm, orange light 590-620 nm, red light 620-750 nm, infrared light (IR-A: 780 to 1400 nm and/or IR-B: 1400 to 3000 nm) or mixtures thereof.
  • UV-C 100 to 280 nm
  • UV-B 280 to 315 nm
  • UV-A 315 to 380 nm
  • the reflection-reducing, high-viscosity fluid of the present invention serves to suppress this secondary reflection.
  • a fluid is considered to reduce reflection if it suppresses the secondary reflection, particularly in the wavelength range used for measurement, by at least 50%, preferably 75%, more preferably 90% and particularly preferably 99%.
  • the fluid used in the process of the present invention is highly viscous. This means that the fluid is adjusted so that it is liquid enough to be applied to the second surface of the test specimen without bubbles and without destruction and at the same time is viscous enough not to drip off the test specimen.
  • the reflection-reducing fluid has a viscosity in the range from about 10,000 mPas to about 100,000 mPas, preferably about 20,000 mPas to about 50,000 mPas.
  • the viscosity can be determined using a rotational viscometer (e.g. Ametek DV2T viscometer with spindle RV-5 at a temperature of 23°C and a rotation frequency of 20 rpm.
  • the aforementioned viscosity values marked “about” can be up to 10%, preferably up to 5%, up or down, but in particular represent the exact value.
  • the occurrence of secondary reflections on the second surface of the test specimen can be suppressed, for example, by adapting the refractive index of the highly viscous fluid to the refractive index of the test specimen. Reflections generally occur at interfaces in which the refractive index of the propagation medium changes. For this reason, the refractive index of the highly viscous fluid preferably differs by 10% or less from the refractive index of the test specimen. In a preferred embodiment, the refractive index of the highly viscous fluid deviates from the refractive index of the test specimen by 5% or less, more preferably 1% or less.
  • the highly viscous fluid can be adjusted so that it absorbs the light irradiated and passing through the transparent test specimen.
  • pigments that absorb in the wavelength range of the irradiated light can be added to the highly viscous fluid.
  • black pigments such as metal oxides, in particular iron oxide, (charcoal), graphite or soot, can be added.
  • the highly viscous fluid absorbs the light passing through the test specimen to at least 75%, more preferably at least 90% and particularly preferably at least 99%.
  • the reflection-reducing, highly viscous fluid is applied to the second surface of the test body.
  • the method used for application is not further limited and includes, among others, a dip coating method, a spin coating method, a transfer coating method and a knife coating method.
  • the viscosity and wetting properties of the reflection-reducing fluid can be adjusted so that good adhesion to the test specimen is achieved.
  • the surface tension of the fluid can be reduced using surface-active substances, such as surfactants, in order to achieve improved wetting properties.
  • the highly viscous, reflection-reducing fluid has a surface tension of less than 62.5 mN/m.
  • the surface tension is particularly preferably between about 29 mN/m and about 60 mN/m, in particular between about 45 mN/m and about 60 mN/m.
  • the aforementioned surface tension values marked “approximately” can deviate upwards or downwards by up to 5%, preferably up to 1%, but in particular represent the exact value.
  • the surface tension can be determined using the known ironing or tear-off method.
  • the optical measurement of the first, optically effective surface of the test specimen is carried out in reflection geometry.
  • corresponding methods are known to a person skilled in the art.
  • the reflection-reducing, highly viscous fluid is removed from the test specimen.
  • the fluid as a whole can be removed from the test specimen without leaving any residue.
  • the fluid can be reused for further measurements.
  • the fluid can be removed with a suitable solvent.
  • the solvent is water and the fluid is water-soluble.
  • water-soluble means that at least 50 g, preferably 100 g, of the fluid dissolve completely in one liter of water at a temperature of 20 ° C.
  • the method can preferably be carried out automatically.
  • the test specimen can be moved to a dispenser by means of a manipulator or a transport device, for example a roller conveyor, which applies or dispenses a predetermined amount of the highly viscous, reflection-reducing fluid onto the second surface of the test specimen.
  • the fluid can be distributed by rotating the test piece or by spreading it using a tool so that the fluid essentially covers the entire second surface of the test piece.
  • Carrying out the optical measurement can also be done automatically, in particular after the test specimen has been moved using the manipulator or the Transport device was relocated to a measuring device.
  • the result of the measurement can be transmitted from the measuring device to a memory or an external computer using a data line.
  • the removal of the reflection-reducing, high-viscosity fluid from the test specimen can also be carried out automatically, in particular after the test specimen has been moved to a cleaning device by means of the manipulator or the transport device.
  • the detachment can advantageously be carried out by rinsing with a jet of a cleaning fluid or by immersing it in a cleaning fluid, the cleaning fluid in particular being water.
  • One aspect of the present invention relates to a reflection-reducing, high-viscosity fluid comprising:
  • a further aspect of the present invention relates to the use of the reflection-reducing, highly viscous fluid in a method according to the invention.
  • the reflection-reducing high-viscosity fluid in particular the foam, preferably contains saccharides, in particular mucopolysaccharide and/or glycosaminoglycans such as aloverose or acemannan and/or D-glucose or D-mannose, which are contained in aloe vera juice.
  • the foam or fluid can contain or have aloe vera juice, the foam preferably having a mass fraction of about 0.5% to about 40%, preferably about 1% to about 30%, in particular about 1% to about 5% Aloe vera juice, preferably from the leaves of Aloe Barbadensis.
  • aloe vera juice advantageously enables the production of a particularly smooth fluid with stable viscosity.
  • a device for carrying out a method for optically measuring an at least partially transparent test specimen with an optically effective first surface and an opposite second surface in reflection geometry is proposed, the method being defined by the features described above.
  • the device has: a holder for the test specimen to be measured; a manipulator; a pretreatment unit for applying a high-viscosity, reflection-reducing fluid to a second surface opposite the first of the test specimen to be measured; a measuring unit for recording a reflection measurement by irradiating a measuring position on the surface of the test specimen to be measured with light and detecting at least part of the light reflected by the test specimen during the irradiation; a post-treatment unit for removing the highly viscous, reflection-reducing fluid located on the second surface of the test specimen to be measured.
  • the receptacle for the test specimen to be measured can be any receptacle that is designed to hold the test specimen to be measured.
  • the receptacle can, for example, consist of a base or support plate or include a base or support plate.
  • the holder can contain a holder for the test specimen to be measured.
  • the manipulator also referred to as a transport device, is not further restricted as long as it is designed to displace the receptacle with the test specimen to be measured relative to the pre-treatment unit, relative to the measuring unit and relative to the post-treatment unit.
  • This can be understood as a movement of the recording towards the units that are realized as immobile also a movement of the respective units to an immovably realized holder for the test specimen to be measured, as well as combinations thereof.
  • at least one actuator can be used as a preferred manipulator, which converts control commands received from a control device into a movement and thus shifts the holder for the test specimen to be measured to the individual units. This can be realized cost-effectively, for example, by mounting the holder on a roller conveyor.
  • the roller conveyor can carry out a movement, in particular a linear one, with the units being arranged along the direction of movement of the roller conveyor.
  • one or more actuators can be used as the preferred manipulator(s), which move the respective units to the holder.
  • only one actuator can be used (for example for cost reasons), which causes a displacement of a holder, with the units pretreatment unit, measuring unit and post-treatment unit being arranged on this holder.
  • the pretreatment unit, measuring unit and post-treatment unit can be arranged on a rotatable holder like in a carousel, with one of the units being moved into direct proximity to the receptacle for the test specimen to be measured by executing a rotary movement of the holder in order to carry out the intended use for the respective unit steps to carry out.
  • the pretreatment unit also referred to as a pretreatment station, is designed to apply a highly viscous, reflection-reducing fluid according to one aspect of the present application to a second surface of the test specimen to be measured, which is opposite the first surface to be measured.
  • the pretreatment unit can be implemented, for example, as a dispenser or dispenser, which, connected to a reservoir containing the highly viscous, reflection-reducing fluid, applies or dispenses the fluid onto the second surface of the test specimen to be measured.
  • the fluid can be distributed by rotating the test specimen or by spreading it using a tool, so that, for example, the fluid essentially covers the entire second surface of the test specimen. There is also a diving or Transfer coating of the second surface of the test specimen to be measured with the fluid is possible.
  • the pretreatment unit can also be designed to clean the test specimen to be measured before applying the fluid.
  • the measuring unit also referred to as a measuring device or reflection detection unit, can comprise at least one light source for irradiating the test specimen with light (measuring light) and at least one detector for detecting at least part of the light reflected by the test specimen during the irradiation.
  • the light source may be any suitable light source and may include one or more LEDs, lamps (e.g., white light lamps), lasers (such as tunable lasers or frequency doubling lasers), etc.
  • Such a measuring unit can be a spectrometer familiar to those skilled in the art, having a suitable light source and a detector.
  • the after-treatment unit also referred to as an after-treatment station or cleaning device, is designed to detach or remove the highly viscous, reflection-reducing fluid from the second surface of the test specimen.
  • the after-treatment unit is not further restricted and can be implemented in different ways, as long as it is designed to remove the fluid from the test specimen, in particular without leaving any residue.
  • the detachment can advantageously be carried out by rinsing with a jet of a cleaning fluid or by immersing it in a cleaning fluid, the cleaning fluid in particular being water.
  • the fluid can also be removed or removed from the surface using a tool.
  • the pretreatment unit can also form a common unit with the aftertreatment unit.
  • the fluid removed after the measurement can remain within the common pre- and post-treatment unit and, without a transport route, can be reused and reapplied from there in a subsequent, further measurement.
  • the The post-treatment unit can also be designed to clean the test specimen to be measured after the fluid has been removed.
  • the device can further comprise a control device.
  • the control device can be designed to control and/or regulate the manipulator and/or the pre-treatment and/or post-treatment unit and/or the measuring unit.
  • the control device can further comprise further units, such as a storage unit (for example for at least temporarily storing the recorded data of the optical measurement), an input unit for inputting data, an output unit for outputting data (such as information and/or commands ), a communication unit for communicating data both from and to the control unit and / or to the individual units of the control device, and / or to other units.
  • the communication between the individual units of the control unit and/or external units can take place via suitable interfaces, both wireless and wired.
  • the input unit may include, for example, a computer mouse and/or a computer keyboard and/or a touch-sensitive screen and/or another suitable input unit.
  • the input unit can be part of the control device or can be connected to the control device by means of a suitable data connection.
  • the output unit can, for example, comprise at least one computer screen for outputting or displaying text and/or images and/or graphics, and/or at least one loudspeaker for outputting audio data.
  • the output unit can be part of the control device or can be connected to the control device by means of a suitable data connection.
  • the device is particularly suitable for being integrated into a production line.
  • the device can be at least partially automated.
  • the sequence of individual or all steps of the method carried out by the device Optical measurement of the at least partially transparent test specimen can be controlled and/or regulated, for example, by means of the control device.
  • the device can be automatically loaded with a test specimen to be measured. This can be done using a suitable manipulator.
  • the optical measurement(s) can also be carried out automatically and/or after the measurement has been carried out, the test specimen to be measured can be automatically unloaded from the device again.
  • the device can accordingly have a loading unit, which is designed to position the test specimen to be measured in the receptacle, and/or a discharge unit, which is designed to remove the test specimen to be measured from the receptacle.
  • the loading unit and/or the unloading unit can also be implemented as separate units (for example in a production line).
  • the loading unit and/or unloading unit can be connected to the control device by means of a suitable data connection and can be controlled and/or regulated accordingly by the control device.
  • the device can be designed in such a way that both surfaces of a test specimen can be measured within the device.
  • the device can be designed to displace the test specimen in such a way that both its first and second surfaces can be measured within the device.
  • the test specimen can be displaced, for example, using a suitable displacement device, which can be part of the manipulator.
  • the test specimen to be measured is held firmly in the receptacle, whereby a tilting or rotation or an otherwise supported movement of the receptacle with the test specimen can take place within the device after the first surface of the test specimen has been measured.
  • the present invention provides an improved method for optically measuring an at least partially transparent test specimen and a device for carrying out such a method, in which the occurrence of disturbing secondary reflections can be reduced.
  • Figure 1 Schematic drawing of an arrangement for carrying out the method according to the invention using a highly viscous fluid as a reflection-reducing agent in a reflection measurement
  • Figure 2 Schematic drawing of a device for carrying out an optical measurement of an at least partially transparent test specimen.
  • FIG. 1 shows an exemplary embodiment for the use of the reflection-reducing, high-viscosity fluid according to the invention.
  • the arrangement shown in FIG. 1 can be used to characterize a transparent test specimen 10 by means of a measurement taking place in reflection.
  • This has a light source 30 which irradiates the test specimen 10 to be examined with light 40.
  • the arrangement has a detection unit 20 (in particular as part of a measuring unit), which is suitable for detecting light 41 reflected by the test specimen 10.
  • the detection unit 20 can have means for reducing scattered light, for example a lens hood or a tube.
  • the test specimen 10 to be measured is positioned in the arrangement such that a first surface can be measured by means of reflection measurement.
  • the first surface faces the light source 30 or the detection unit 20 during the measurement.
  • the test specimen 10 was measured or Characterization of its first surface, provided on its second surface facing away from the light source with a reflection-reducing, high-viscosity fluid 1 according to the invention.
  • the fluid 1 absorbs light 42, which is emitted by the light source 30 and transmitted on the first surface.
  • the second surface can of course also be measured or characterized.
  • the test specimen 10 is positioned upside down and positioned with its second surface towards the light source 30, the first surface then being previously provided with the reflection-reducing, high-viscosity fluid according to the invention.
  • FIG. 2 shows a schematic drawing of a device 8 for carrying out an optical measurement of an at least partially transparent test specimen 10.
  • the optical measurement is carried out according to the method for optical measurement described above according to one aspect of the present application.
  • a roller conveyor is arranged within the device as a preferred manipulator 82, on which a receptacle 81 for the test specimen 10 to be measured, shown here as a spectacle lens, is arranged.
  • the device also has a pretreatment unit 83.
  • the pretreatment unit 83 is preferably implemented as a dispenser which applies a highly viscous, reflection-reducing fluid to a surface of the test specimen.
  • the device has a measuring unit 84.
  • the measuring unit can be a spectrometer familiar to those skilled in the art, which is designed to record a reflection measurement of the surface of the test specimen to be measured.
  • the device also has a post-treatment unit 85, which is designed to remove the fluid applied by the pre-treatment unit 83 from the test specimen after the measurement has been carried out.
  • the device also has a control device 80, which has a processor as the preferred computing unit and a hard drive as the preferred one Storage unit, a monitor as the preferred output unit and a keyboard as the preferred input unit.
  • the control device also has a communication unit.
  • the control device 80 is designed to control and/or regulate the manipulator 82 and/or the pre-treatment unit 83 and/or the post-treatment unit 85 and/or the measuring unit 84.
  • the present invention is further described by the following non-limiting examples, particularly with regard to the preparation of the antireflective high viscosity fluid.
  • the following components are used to produce the reflection-reducing, high-viscosity fluid:
  • the dispersion can take place in water, ethanol, acetone or a mixture thereof. However, only water is preferably used, since ethanol or acetone are flammable and represent hazardous substances that evaporate quickly and thereby change the properties of the reflection-reducing, high-viscosity fluid and also pollute the environment.
  • the polymer dispersion can contain or be mixed with a benzisothiazolinone from the compound class of isothiazolinones in a mass fraction of less than one percent, for example 1,2-benzisothiazol-3(2H)-one (CAS No. 2634-33-5), which acts as a biocide and therefore has preservative properties.
  • a benzisothiazolinone from the compound class of isothiazolinones in a mass fraction of less than one percent, for example 1,2-benzisothiazol-3(2H)-one (CAS No. 2634-33-5), which acts as a biocide and therefore has preservative properties.
  • the polymer dispersion can also contain or be mixed with 2-(2-butoxyethoxy)ethyl acetate (CAS No. 124-17-4) in a mass fraction of less than one percent in order to adjust the spreadability of reflection-reducing, highly viscous fluid, since it is at 20 ° C has a viscosity of 1.79 mPas and a surface tension of 28.5 mN/m.
  • the polymer dispersion can have a viscosity of about 4,000 mPas to about 20,000 mPas, preferably about 8,000 mPas to about 15,000 mPas.
  • the above-mentioned viscosity is determined using the Brookfield method, preferably with a rotational viscometer (e.g. Ametek DV2T viscometer with spindle RV-5) at a temperature of 23 ° C and a rotation frequency of 20 rpm.
  • the polymer dispersion can have a density of about 0.95 g/m 3 to about 1.1 g/m 3 .
  • a mass fraction of about 26% of a foam comprising water, at least one emulsifier, at least one surfactant and at least one saccharide, in particular a monosaccharide and/or a polysaccharide.
  • the emulsifier can preferably contain stearic acid, a polyethylene glycol derivative (PEG derivative) or a polypropylene glycol derivative (PPG derivative) such as Ceteareth-50, Methyl Gluceth-20 and/or Laureth-23.
  • PEG derivative polyethylene glycol derivative
  • PPG derivative polypropylene glycol derivative
  • the surfactant can preferably contain sodium dodecyl polyoxyethylene sulfate (sodium laureth sulfate), sodium polynaphthalene sulfonate and/or potassium stearate.
  • the saccharide can preferably have a monosaccharide, for example galactose, glucose, xylose, mannose, mucopolysaccharide and/or glycosaminoglycans such as aloverose or acemannan, which are contained in aloe vera juice.
  • the saccharide can preferably have a polysaccharide, for example D-glucose and/or D-mannose, which are also contained in aloe vera juice. It goes without saying that the saccharide can also have a mixture of the above-mentioned monosaccharides and/or polysaccharides.
  • the foam can preferably further contain at least one of the following ingredients: a moisturizer, a pH regulator, a buffer substance, a thickener, a preservative.
  • the moisturizer can preferably contain glycerin, palmitic acid and/or coconut caprate or a mixture thereof.
  • a triethanolamine can preferably be contained in the foam as a pH regulator. More preferably, potassium hydroxide can be contained in the foam as a buffer substance. More preferably, xanthan gum and/or water-soluble cellulose or hydroxypropyl methyl cellulose can be contained in the foam as a thickener.
  • the aqueous solution can preferably be a solution of sodium chloride, in particular with a mass fraction of about 9g per liter of water, or a Ringer's solution (Solutio Ringeri).
  • the diluent can contain at least one preservative.
  • the aqueous solution can contain sodium edetate (EDTA) and/or polyhexanide or polysametilene biguanides or polysametilene biguanides (PHMB), in particular with a concentration of approximately 0.0001% to 0.001%.
  • the diluent may contain at least one gelling agent, such as hyaluronic acid, preferably in a concentration of about 0.2% to about 2%.
  • the paint can have a density of about 1.05 to about 1.35 g/cm 3 .
  • the at least one pigment or the pigment mixture is designed to emit light in a specific wavelength, preferably in a proportion of more than 50%, particularly preferably in a proportion of more than 75% and in particular in a proportion of more than 90% or more than 95% to absorb.
  • the specific wavelength can, for example, be visible light in a wavelength range of 380nm up to 800nm or from 400nm to 780nm.
  • the wavelength ranges that are used for measuring a transparent body can also be absorbed, for example ultraviolet light (UV-C: 100 to 280 nm, UV-B: 280 to 315 nm and / or UV-A: 315 to 380 nm), violet light at 380-450 nm, blue light at 450-495 nm, green light at 495-570 nm, yellow light at 570-590 nm, orange light at 590-620 nm, red light at 620-750 nm , infrared light (IR-A: 780 to 1400 nm and/or IR-B: 1400 to 3000 nm) or mixtures thereof.
  • the at least one pigment can be iron oxide black or carbon black or the pigment mixture can have at least one or both of the aforementioned pigments.
  • the aforementioned mass proportions are variable to a small extent, for example in order to adjust the viscosity of the reflection-reducing, high-viscosity fluid, without, however, impairing the reflection-reducing effect.
  • the stated mass fractions can vary by approximately 5 to 10% of the stated mass fraction, so that the sum of all mass fractions again amounts to 100%.
  • a preferred composition of the reflection-reducing, high-viscosity fluid can be made from ingredients that are easy to obtain and are ecologically and health-friendly.
  • the polymer dispersion can preferably be a white glue, which is available as commercially available craft glue or wood glue, for example under the brand name “PONAL” from Henkel, (2.) as the foam, a shaving foam, which is available, for example, under the brand name “Isana” as “shaving foam Sensitive with Aloe Vera” is available from dm, (3.) as a diluent a contact lens combination solution, which is available, for example, under the brand name "visiomax” contact lens care product combination solution for soft contact lenses from dm, and (4.) a black acrylic paint, which is available, for example, under the brand name “AKADEMIE” as “Acryl color - 23000 - Fine artist acrylic color” from Schmincke.
  • 17 g of the shaving foam is mixed with 37 g of craft glue in a glass bowl until a viscous mass is formed. A teaspoon (equivalent to about 6 g) of color is added to this mixture and equally distributed. Finally, 7 g of the combination solution are slowly added and mixed in until the mixture easily separates from the bowl while stirring.
  • the mass obtained in this way is left to stand in the air for a day with occasional stirring in order to dry or thicken, in particular in order to achieve a desired viscosity of approximately 10,000 mPas to 100,000 mPas, and then stored in an airtight manner.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Geometry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention concerne un procédé et un dispositif (8) de mesure optique d'un corps d'échantillon (10) au moins partiellement transparent avec une première surface optiquement active et une seconde surface opposée à celle-ci. Le procédé est mis en œuvre à l'aide d'une géométrie de réflexion et comprend les étapes suivantes : i) l'application d'un fluide de réduction de réflexion hautement visqueux (1) sur la seconde surface du corps d'échantillon (10) ; ii) la réalisation du processus de mesure optique ; et iii) l'élimination du fluide de réduction de réflexion hautement visqueux (1).
PCT/EP2023/063894 2022-05-24 2023-05-24 Procédé et dispositif de mesure optique d'une surface optiquement active d'un corps d'échantillon au moins partiellement transparent WO2023227651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022113090.8A DE102022113090B4 (de) 2022-05-24 2022-05-24 Verfahren zur optischen Vermessung eines zumindest teilweise transparenten Probekörpers
DE102022113090.8 2022-05-24

Publications (1)

Publication Number Publication Date
WO2023227651A1 true WO2023227651A1 (fr) 2023-11-30

Family

ID=86732487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/063894 WO2023227651A1 (fr) 2022-05-24 2023-05-24 Procédé et dispositif de mesure optique d'une surface optiquement active d'un corps d'échantillon au moins partiellement transparent

Country Status (2)

Country Link
DE (1) DE102022113090B4 (fr)
WO (1) WO2023227651A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050259247A1 (en) * 2004-05-21 2005-11-24 Cyr David G Apparatus and process for detecting inclusions
US20130293726A1 (en) * 2012-05-01 2013-11-07 Joel S. Armstrong-Muntner Lens Inspection System
US20170274490A1 (en) * 2014-10-07 2017-09-28 Shamir Optical Industry Ltd. Methods and apparatus for inspection and optional rework of blocked ophthalmic lenses
CN112964456A (zh) * 2021-02-08 2021-06-15 上海天马微电子有限公司 用于测试薄膜反射率的装置及薄膜反射率的测试方法
WO2021220267A1 (fr) * 2020-04-30 2021-11-04 Lumus Ltd. Caractérisation d'échantillon optique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3582183B1 (fr) 2018-06-11 2020-12-30 FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. Techniques déflectométriques
CN114935447A (zh) 2022-05-17 2022-08-23 深圳盛达同泽科技有限公司 眼镜片表面微透镜阵列的屈光测量装置及方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050259247A1 (en) * 2004-05-21 2005-11-24 Cyr David G Apparatus and process for detecting inclusions
US20130293726A1 (en) * 2012-05-01 2013-11-07 Joel S. Armstrong-Muntner Lens Inspection System
US20170274490A1 (en) * 2014-10-07 2017-09-28 Shamir Optical Industry Ltd. Methods and apparatus for inspection and optional rework of blocked ophthalmic lenses
WO2021220267A1 (fr) * 2020-04-30 2021-11-04 Lumus Ltd. Caractérisation d'échantillon optique
CN112964456A (zh) * 2021-02-08 2021-06-15 上海天马微电子有限公司 用于测试薄膜反射率的装置及薄膜反射率的测试方法

Also Published As

Publication number Publication date
DE102022113090A1 (de) 2023-11-30
DE102022113090B4 (de) 2024-03-21

Similar Documents

Publication Publication Date Title
DE112015001461B4 (de) Mikroskopbetrachtungsbehälter und dessen Verwendung
DE69527763T2 (de) Sauerstoffdurchlässige Kontaktlinse mit hydrophiler Oberfläche und Verfahren zur Herstellung derselben
DE2515869C3 (de) Verfahren und Vorrichtung zur Herstellung von vorbeschichteten Objektträgern
DE602004000552T2 (de) Anti-Streu-Beschichtung für Fenster von Polierkissen
WO2006111446A1 (fr) Procede de polissage fin/structuration de matieres dielectriques thermosensibles au moyen d'un rayonnement laser
DE2826363C2 (de) Deckfolie zur Verwendung in mikroskopischen Färbeverfahren und Verfahren zu ihrer Herstellung
DE2118942A1 (de) Verfahren und Vorrichtung zur Betrachtung bzw. Untersuchung mikroskopischer Gegenstände
DE69833835T2 (de) Verfahren zur Bestimmung der Dicke eines optischen Prüfkörpers
DE112018002495T5 (de) Durchsichtiger Gegenstand und Verfahren zur Herstellung eines durchsichtigen Gegenstands
DE102022113090B4 (de) Verfahren zur optischen Vermessung eines zumindest teilweise transparenten Probekörpers
EP1635167A1 (fr) Procédé pour la mesure quantitative de dépôts sur des surfaces solides
DE102017010280B4 (de) Verwendung eines Mittels zur reversiblen flüchtigen Mattierung oder Beweißung von optisch schwer oder nicht messbaren Objekten
DE2635449C3 (de) Verfahren zum gleichzeitigen Anfärben und Versiegeln einer biologischen Probe und flüssige Formulierung zur Durchführung des Verfahrens
DE1772105B1 (de) Vorrichtung zur Bestimmung der photometrischen Transmission geschliffener Diamanten
EP3111191B1 (fr) Procédé et dispositif de détermination d'un effet barrière d'un revêtement sur un substrat
DE202016007328U1 (de) Vorrichtung zur temporären Beschichtung und optischen Messung von Objekten
EP2028480B1 (fr) Procédé et dispositif pour l'inspection d'un objet de contrôle
Alizadeh Cleaning and restoration of an oil painting with a polymer gel in Iran
DE19743590C2 (de) Verfahren zur Herstellung von Proben zur Analyse von Restaurierungsobjekten
DE10150566A1 (de) Verfahren zum Prüfen von Kunststoffen
DE2737845A1 (de) Verfahren zum anfaerben und versiegeln einer biologischen probe, die an einem mikroskopischen objekttraeger haftet und luftgetrocknet ist, insbesondere einer blutprobe
DE904353C (de) Verfahren und Vorrichtung zum Untersuchen der Oberflaechenbeschaffenheit von Koerpern
DE1900808A1 (de) Untersuchungsgeraet fuer einen Pruefstoffstrom sowie Untersuchungsverfahren
DE1100282B (de) Verwendung einer Pigmentdispersion zur Abtoenung von Sicherheitsglas gegen Lichtblendung
WO2005017508A1 (fr) Procede pour caracteriser des structures de surface et utilisation dudit procede pour modifier, reconcevoir et produire des materiaux

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23729670

Country of ref document: EP

Kind code of ref document: A1