CN111624772A - Glasses and glasses anti-fog method - Google Patents
Glasses and glasses anti-fog method Download PDFInfo
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- CN111624772A CN111624772A CN202010574293.XA CN202010574293A CN111624772A CN 111624772 A CN111624772 A CN 111624772A CN 202010574293 A CN202010574293 A CN 202010574293A CN 111624772 A CN111624772 A CN 111624772A
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- temperature sensor
- lens
- temperature
- transparent conductive
- metal electrode
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- 239000011521 glass Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims description 67
- 239000002184 metal Substances 0.000 claims description 67
- 239000010408 film Substances 0.000 claims description 64
- 239000000463 material Substances 0.000 claims description 11
- 239000010409 thin film Substances 0.000 claims description 10
- 229910001006 Constantan Inorganic materials 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical compound [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/08—Anti-misting means, e.g. ventilating, heating; Wipers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Eyeglasses (AREA)
Abstract
The invention provides glasses, which comprise a glasses frame and lenses arranged on the glasses frame, and further comprise a first temperature sensor used for sensing the ambient temperature; a second temperature sensor for sensing a lens temperature; the transparent conductive heating film is arranged on at least one surface of the lens; a battery connected to the frame; and a control unit electrically connected to the first temperature sensor, the second temperature sensor, the transparent conductive heating film, and the battery, respectively. The control unit controls the battery to supply power to the transparent conductive heating film based on a difference between an ambient temperature and a lens temperature, so that the transparent conductive heating film heats the lens. Above-mentioned glasses can the self-heating lens in order to prevent that the lens from hazing, have promoted the convenience that glasses used. The invention also provides an anti-fog method for the glasses.
Description
Technical Field
The invention relates to the field of intelligent wearing, in particular to glasses and a glasses anti-fog method.
Background
Currently, glasses are essential to many people, such as myopia glasses, presbyopic glasses, and the like, and VR glasses are also beginning to be accepted by many consumers as a novel intelligent wearable device.
In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: when a person wearing the glasses enters the high-temperature area from the low-temperature area, water vapor in the air can be condensed and fogged on the lenses, and the sight of the user of the eyes is influenced. In addition, when the VR glasses are used in a low-room-temperature environment in winter, water vapor evaporated from the face and eyes and water vapor in breath can be condensed and fogged on the surfaces of the VR glasses, and normal use is affected.
Disclosure of Invention
In view of the above, there is a need for glasses and a method for preventing fogging of glasses to solve the above problems.
An embodiment of the present invention provides glasses, including a frame and lenses disposed on the frame, the glasses further including:
a first temperature sensor for sensing an ambient temperature;
a second temperature sensor for sensing a lens temperature;
the transparent conductive heating film is arranged on at least one surface of the lens;
a battery connected to the frame; and
the control unit is respectively electrically connected with the first temperature sensor, the second temperature sensor, the transparent conductive heating film and the battery, and the control unit controls the battery to supply power to the transparent conductive heating film based on the difference value of the ambient temperature and the temperature of the lens so as to heat the transparent conductive heating film to the lens.
Above-mentioned glasses include first temperature sensor, second temperature sensor, transparent conductive heating membrane, battery and the control unit, can be less than ambient temperature certain level at the lens temperature after, automatically to transparent conductive heating membrane power supply, thereby heat the lens, prevent the lens fogging, it influences the sight to avoid producing water smoke on the lens, the easy puzzlement that the fog caused the user of glasses has been solved, and solved the problem that the lens led to the fact wearing and tearing to the lens that need clean after the glasses fogging, the convenience and the life that glasses used have been promoted.
In some embodiments, the first temperature sensor and the second temperature sensor are both thin film thermocouples for converting the sensed temperature signal into a thermoelectromotive force signal and transmitting the thermoelectromotive force signal to the control unit, respectively;
and the control unit judges whether the difference value between the lens temperature and the environment temperature meets a preset condition or not based on the thermal electromotive force signal.
Because the first temperature sensor and the second temperature sensor are both film type thermocouples, the volume is small and the temperature measurement precision is high.
In some embodiments, the first temperature sensor is disposed on the frame and the second temperature sensor is disposed on the lens.
Because first temperature sensor with second temperature sensor is the film thermocouple, thereby first temperature sensor locates on the mirror holder and is convenient for the sensing ambient temperature, second temperature sensor locates on the lens, for example one side of lens to be convenient for the temperature of sensing lens.
In some embodiments, the first temperature sensor and the first temperature sensor each comprise:
a substrate; and
and the thermocouple unit is arranged on one side of the base material and comprises a first metal electrode and a second metal electrode, and one end of the first metal electrode is connected with one end of the second metal electrode.
The first metal electrode and the second metal electrode are made of metals of different materials, and when the temperature of the part to be measured changes, thermoelectromotive force is generated between the first metal electrode and the second metal electrode, so that the temperature of the part to be measured is obtained.
In some embodiments, the first metal electrode comprises a first extension and a first connection connected, and the second metal electrode comprises a second extension and a second connection connected;
the first extending part and the second extending part are arranged in parallel at intervals, and the first connecting part and the second connecting part are connected.
By arranging the first extension part and the second extension part at intervals, interference between different electrodes is avoided.
In some embodiments, the number of the thermocouple units is multiple, and the multiple thermocouple units are connected in sequence;
the first metal electrodes and the second metal electrodes are alternately arranged in series.
Through connecting a plurality of thermocouple units in series, the thermoelectromotive force of detection has been enlargied manyfold, has improved temperature measurement precision.
In some embodiments, the first metal electrode is made of copper, and the second metal electrode is made of constantan;
the thickness of the first metal electrode and the second metal electrode is 50 nm-300 nm.
The copper-constantan thermocouple has the advantages of low cost, good stability, high precision and good reproducibility; the thickness of the first metal electrode and the second metal electrode is smaller, so that the volume of the thermocouple is further ensured to be smaller.
In some embodiments, the transparent conductive heating film includes a transparent conductive thin film, a positive bus bar and a negative bus bar, the transparent conductive thin film is a metal oxide thin film or a metal mesh thin film, and the positive bus bar and the negative bus bar are respectively disposed on two sides of the transparent conductive thin film.
The transparent conductive heating film adopts a transparent metal oxide film or a metal grid film, so that the electric heating can be realized, and the transmittance of the lens is not influenced.
In some embodiments, the glasses further comprise a circuit board and a data interface connected to the circuit board, and the control unit is disposed on the circuit board.
The circuit board can bear the control unit, and the data interface can be used for charging the battery and inputting and outputting information.
The invention also provides a glasses anti-fog method, which is applied to the glasses in any embodiment, and the glasses anti-fog method comprises the following steps:
the first temperature sensor and the second temperature sensor respectively sense the ambient temperature and the lens temperature and send corresponding temperature signals to the control unit;
the control unit calculates a difference value between the ambient temperature and the lens temperature and judges whether the difference value meets a preset condition or not;
when the difference value meets the preset condition, the control unit controls the battery to supply power to the transparent conductive heating film, so that the transparent conductive heating film heats the lens.
According to the anti-fog method for the glasses, the transparent conductive heating film can be automatically powered after the temperature of the lenses is lower than the ambient temperature by a certain level, so that the lenses are heated, the lenses are prevented from being fogged, the condition that the sight is influenced by water mist generated on the lenses is avoided, the problem that the glasses are easy to fogged and cause troubles to users is solved, and the convenience in use of the glasses is improved.
Drawings
Fig. 1 is a perspective view of glasses according to a first embodiment of the present invention.
Fig. 2 is a schematic view of the constituent modules of the eyeglasses according to the first embodiment of the present invention.
Fig. 3 is a schematic view of a first temperature sensor in the glasses of fig. 1.
Fig. 4 is a schematic view of the structure of the lenses of the glasses shown in fig. 1.
Fig. 5 is a schematic structural view of a first temperature sensor in glasses according to a second embodiment of the present invention.
Fig. 6 is a schematic structural view of a first temperature sensor in glasses according to a third embodiment of the present invention.
Fig. 7 is a schematic structural view of a transparent conductive heating film in glasses according to a fourth embodiment of the present invention.
Fig. 8 is a flowchart of a glasses anti-fog method according to a fifth embodiment of the present invention.
Description of the main elements
Thermocouple unit 32
Second connecting portion 3244
Transparent conductive heating film 50
Transparent conductive film 51
Negative electrode bus bar 53
Conducting wire 90
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
It is further noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1, a pair of glasses 100 according to a first embodiment of the present invention includes a frame 10, a lens 20, a first temperature sensor 30, a second temperature sensor 40, a transparent conductive heating film 50, and a battery 60.
The frame 10 provides structural support for the eyeglasses 100. in this embodiment, the frame 10 includes two temples, but the structure of the frame 10 is not limited thereto and can be any structure that provides support, such as a rimless nose pad plus temple combination, a single frame and sling chain combination, and the like. In addition, if the glasses 100 are VR glasses, the frame 10 can be a housing.
The lens 20 is disposed on the frame 10 and can be, but is not limited to, a glass lens, a resin lens, a PC lens, etc.
The first temperature sensor 30 is used to sense the ambient temperature and the second temperature sensor 40 is used to sense the temperature of the lens 20. In this embodiment, the first temperature sensor 30 is disposed on the frame 10 and the second temperature sensor 40 is disposed on one side of the lens 20.
The transparent conductive heating film 50 is disposed on at least one surface of the lens 20, and the transparent conductive heating film 50 can convert electrical energy into thermal energy when powered on to heat the lens 20.
The battery 60 is attached to the frame 10. in particular, the battery 60 can be disposed in the frame 10 or attached to the frame 10.
Referring to fig. 1 and 2, the glasses 100 further include a control unit 70, and the control unit 70 is disposed in the frame 10 and electrically connected to the first temperature sensor 30, the second temperature sensor 40, the transparent conductive heating film 50 and the battery 60, respectively.
The control unit 70 receives the temperature information sent by the first temperature sensor 30 and the second temperature sensor 40, and controls the battery 60 to supply power to the transparent conductive heating film 50 based on the difference between the lens temperature and the ambient temperature, so that the transparent conductive heating film 50 heats the lens to prevent the lens from fogging.
Specifically, the control unit 70 may calculate a difference between the ambient temperature and the lens temperature, determine whether the difference meets a preset condition, and control the battery 60 to supply power to the transparent conductive heating film 50 when the difference meets the preset condition.
The condition meeting the preset condition may be that the difference reaches a preset threshold, exceeds a preset threshold, or is within a preset range.
It is understood that the preset condition can be set according to requirements.
In this embodiment, the glasses 100 further include a circuit board 80, the circuit board 80 is disposed in the frame 10, and the circuit board 80 can be connected with a data interface 81, where the data interface 81 is used for charging the battery 60 and implementing input and output information, such as a USB interface, a type-C interface, and the like.
The control unit 70 is disposed on the circuit board 80, the control unit 70 may be a Micro Control Unit (MCU), a data processing chip, or an information processing unit having a data processing function, and the control unit 70 can perform calculation, storage, amplification, and signal processing functions.
The glasses 100 further include a wire 90, and the first temperature sensor 30, the second temperature sensor 40, the transparent conductive heating film 50, the battery 60 and the circuit board 80 are electrically connected through the wire 90.
In one embodiment, the first temperature sensor 30 and the second temperature sensor 40 are thin film thermocouples, and are respectively configured to convert the sensed temperature signal into a thermoelectromotive signal and transmit the thermoelectromotive signal to the control unit 70. The control unit 70 determines whether the difference between the lens temperature and the ambient temperature meets a preset condition based on the thermo-electromotive force signal.
In this embodiment, a first temperature sensor 30 is provided on the frame 10 to facilitate sensing of ambient temperature, and a second temperature sensor 40 is provided on the lens 20, e.g., on a side of the lens 20, to facilitate sensing of the temperature of the lens 20.
Because the first temperature sensor 30 and the second temperature sensor 40 are both film type thermocouples, the size is small, the temperature measurement precision is high, and the influence on the use convenience of the glasses 100 is avoided.
Fig. 3 is a schematic structural diagram of the first temperature sensor 30, and since the first temperature sensor 30 and the second temperature sensor 40 have the same structure, the second temperature sensor 40 is omitted in the present application.
The first temperature sensor 30 includes a base material 31 and a thermocouple unit 32 disposed at one side of the base material 31. The thermocouple unit 32 includes a first metal electrode 322 and a second metal electrode 324, and one end of the first metal electrode 322 is connected and conducted with one end of the second metal electrode 324 to form a connection.
The first metal electrode 322 and the second metal electrode 324 are made of metals of different materials, when the temperature of the to-be-measured portion changes, a thermal electromotive force is generated between the first metal electrode and the second metal electrode, and the temperature of the to-be-measured portion can be obtained by measuring the thermal electromotive force.
Specifically, in the present embodiment, the substrate 31 is a plate, and the material of the substrate 31 can be a thin film material such as polyethylene terephthalate (PET) or Polyimide (PI), but is not limited thereto. PET and PI material can compromise holistic pliability, stability, reliability, comparatively be fit for in the aspect of the heat conductivility, and have insulating properties simultaneously, can prevent to produce the error because the conduction of substrate 31 when measuring.
The first metal electrode 322 comprises a first extending portion 3222 and a first connecting portion 3224 connected, and the second metal electrode 324 comprises a second extending portion 3242 and a second connecting portion 3244 connected; the first extending part and the second extending part are arranged in parallel at intervals, and the first connecting part is connected with the second connecting part.
By providing the first extension 3222 and the second extension 3242 at an interval, interference between different electrodes is avoided.
The first extending portion 3222 and the second extending portion 3242 are both elongated. The first connecting portion 3224 is located at one end of the first extending portion 3222, and the second connecting portion 3244 is located at one end of the second extending portion 3242, that is, the first extending portion 3222 and the first connecting portion 3224 are L-shaped as a whole, and the second extending portion 3242 and the second connecting portion 3244 are L-shaped as a whole.
Specifically, the first extending portion 3222 and the second extending portion 3242 are disposed in parallel and spaced, and the first connecting portion 3224 is connected to the second connecting portion 3244, i.e., the first metal electrode 322 and the second metal electrode 324 are U-shaped integrally.
In the present embodiment, the first temperature sensor 30 and the second temperature sensor 40 use T-type thermocouples, that is, the first metal electrode 322 is made of copper, and the second metal electrode 324 is made of constantan. The thickness of the first metal electrode 322 and the second metal electrode 324 is 50nm to 300nm, thereby further ensuring that the volume of the thermocouple is small. The copper-constantan thermocouple has the advantages of low cost, good stability, high precision and good reproducibility, wherein the temperature measuring precision can reach +/-0.1 ℃, and the temperature measuring range is-200 ℃ to 350 ℃.
It is understood that in other embodiments of the present application, the materials of the first metal electrode 322 and the second metal electrode 324 are not limited to copper and constantan, and suitable metal materials may be selected according to the required detection range or cost considerations, for example, the first temperature sensor 30 and the second temperature sensor 40 use K-type thermocouples, and the first metal electrode 322 and the second metal electrode 324 are nickel-chromium and nickel-silicon or aluminum, respectively; as another example, the first temperature sensor 30 and the second temperature sensor 40 use E-type thermocouples, and the first metal electrode 322 and the second metal electrode 324 are nichrome and constantan, respectively.
The first temperature sensor 30 further includes two pads 33, the pads 33 being used to electrically connect the first temperature sensor 30 to the wires 90. The two bonding pads 33 are respectively disposed at one ends of the first metal electrode 322 and the second metal electrode 324 far away from the connection point.
It is understood that since the second temperature sensor 40 has the same structure as the first temperature sensor 30, the base material and the thermocouple unit are also included, and thus, detailed description thereof is omitted.
It is understood that in other embodiments of the present application, the first temperature sensor 30 and the second temperature sensor 40 are not limited to thermocouples, but may be resistance type temperature sensors.
Referring to fig. 4, the transparent conductive heating film 50 is disposed on at least one surface of the lens 20, the surface of the mirror surface 20 is a light incident surface and a light emitting surface of the lens 20, and the transparent conductive heating film 50 includes a transparent conductive film 51, a positive bus 52 and a negative bus 53.
In the present embodiment, the transparent conductive film 51 is a metal oxide film, such as Indium Tin Oxide (ITO), and it is understood that the transparent conductive film 51 may also be aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO), or the like.
The positive bus bar 52 and the negative bus bar 53 are respectively disposed at both sides of the transparent conductive film 51, and respectively serve as a positive electrode and a negative electrode of the transparent conductive heating film to supply current to the transparent conductive film 51.
The transparent conductive heating film 50 is a transparent metal oxide film, which can realize the electric heating without affecting the transmittance of the lens.
Above-mentioned glasses 100 include first temperature sensor 30, second temperature sensor 40, transparent conductive heating film 50, battery 60 and the control unit 70, can be less than the certain level of ambient temperature at lens 20 temperature after, the automatic power supply to transparent conductive heating film 50, thereby heat lens 20, prevent that lens 20 from hazing, it influences the sight to avoid producing the water smoke on the lens 20, the puzzlement that glasses 100 hazed easily and led to the fact the user has been solved, and solved glasses and need clean the problem that the lens led to the fact wearing and tearing to the lens after hazing, the convenience and the life that glasses used have been promoted.
A second embodiment of the invention provides eyewear 100 substantially identical to the eyewear of the first embodiment, but the first and second temperature sensors 30, 40 have different configurations from the first embodiment. Referring to fig. 5, in the second embodiment, the first temperature sensor 30 includes two thermocouple units 32, and the two thermocouple units 32 are disposed opposite to each other and connected to each other.
The two pads 33 are respectively located at one end of the first metal electrode 322 of one thermocouple unit 32 and one end of the second metal electrode 324 of the other thermocouple unit 32.
In the present embodiment, by connecting two thermocouple units 32 in series, the thermal electromotive force between the electrodes is multiplied, which helps to improve the detection accuracy of the temperature.
A third embodiment of the present invention provides eyewear 100 substantially identical to eyewear 100 of the first embodiment, but the first temperature sensor 30 and the second temperature sensor 40 have different configurations from those of the first embodiment. Referring to fig. 6, in the third embodiment, the number of thermocouple units 32 in the first temperature sensor 30 is multiple, and the multiple thermocouple units 32 are sequentially connected. The plurality of first metal electrodes 322 and the plurality of second metal electrodes 324 are alternately and serially disposed.
In the present embodiment, the plurality of thermocouple units 32 are arranged in two rows to save occupied space. It is understood that thermocouple units 32 may also be arranged in one row, multiple rows, circles, or other shapes.
In the present embodiment, by connecting a plurality of thermocouple units 32 in series, the thermal electromotive force between the electrodes is amplified by a multiple, thereby further improving the accuracy of temperature detection.
The second temperature sensor 40 has the same structure as the first temperature sensor 30, and thus, the description thereof is omitted.
A fourth embodiment of the present invention provides eyeglasses 100 substantially identical to the eyeglasses of the first embodiment, but the structure of a transparent conductive heating film 50 is different from that of the first embodiment. Referring to fig. 7, the transparent conductive heating film 50 includes a transparent conductive film 51, a positive bus bar 52, and a negative bus bar 53. The positive bus bar 52 and the negative bus bar 53 are respectively disposed at both sides of the transparent conductive film 51, and respectively serve as a positive electrode and a negative electrode of the transparent conductive heating film 50 to supply current to the transparent conductive film 51.
In the present embodiment, the transparent conductive film 51 is a metal mesh film.
The transparent conductive heating film 50 is a transparent metal mesh film, which can realize the power-on heating without affecting the transmittance of the lens 20.
Referring to fig. 8, a fifth embodiment of the present invention provides an anti-fogging method for glasses, which is applied to the glasses 100 described in any of the above embodiments, and the anti-fogging method for glasses includes the following steps.
Step S1: the first and second temperature sensors 30 and 40 sense the ambient temperature and the lens temperature, respectively, and transmit corresponding temperature signals to the control unit 70.
In one embodiment, the first temperature sensor 30 and the second temperature sensor 40 are thin film thermocouples for converting the sensed temperature signals into thermoelectromotive force signals, respectively, and transmitting the thermoelectromotive force signals to the control unit 70, i.e., the temperature signals are transmitted in the form of thermoelectromotive force signals.
Step S2: the control unit 70 calculates a difference between the ambient temperature and the lens temperature, and determines whether the difference meets a preset condition.
The condition meeting the preset condition may be that the difference reaches a preset threshold, exceeds a preset threshold, or is within a preset range.
If the difference value meets the preset condition, the step S3 is executed; if not, the process returns to step S1, and continues to sense the ambient temperature and the lens temperature after a preset time.
In one embodiment, the control unit 70 calculates a difference between the ambient temperature and the lens temperature according to the thermal electromotive force signals sent by the first temperature sensor 30 and the second temperature sensor 40 and determines whether the difference meets a preset condition.
Step S3: the control unit 70 controls the battery 60 to supply power to the transparent conductive heating film 50 so that the transparent conductive heating film 50 heats the lens.
After the heating for the preset time, the control unit 70 controls the battery 60 to cut off the power to the transparent conductive heating film 50.
The anti-fog method for the glasses can automatically supply power to the transparent conductive heating film 50 after the temperature of the lenses 20 is lower than the ambient temperature by a certain level, so that the lenses 20 are heated, the fogging of the lenses 20 is prevented, the phenomenon that the sight is affected by water mist generated on the lenses 20 is avoided, the trouble that the glasses 100 are easily fogged to users is solved, and the convenience and the service life of the glasses 100 in use are improved.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (10)
1. The utility model provides a pair of glasses, includes the mirror holder and locates the lens on the mirror holder, its characterized in that, glasses still include:
a first temperature sensor for sensing an ambient temperature;
a second temperature sensor for sensing a lens temperature;
the transparent conductive heating film is arranged on at least one surface of the lens;
a battery connected to the frame; and
the control unit is respectively electrically connected with the first temperature sensor, the second temperature sensor, the transparent conductive heating film and the battery, and controls the battery to supply power to the transparent conductive heating film based on the difference value between the ambient temperature and the lens temperature so that the transparent conductive heating film heats the lens.
2. The eyeglasses according to claim 1, wherein said first temperature sensor and said second temperature sensor are thin film thermocouples for converting the sensed temperature signals into thermoelectromotive signals and transmitting the thermoelectromotive signals to said control unit, respectively;
and the control unit judges whether the difference value between the lens temperature and the environment temperature meets a preset condition or not based on the thermal electromotive force signal.
3. The eyewear of claim 2, wherein the first temperature sensor is disposed on the frame and the second temperature sensor is disposed on the lens.
4. The eyewear of claim 2, wherein the first temperature sensor and the first temperature sensor each comprise:
a substrate; and
and the thermocouple unit is arranged on one side of the base material and comprises a first metal electrode and a second metal electrode, and one end of the first metal electrode is connected with one end of the second metal electrode.
5. The eyewear of claim 4, wherein the first metal electrode comprises a first extension and a first connection that are connected, and the second metal electrode comprises a second extension and a second connection that are connected;
the first extending part and the second extending part are arranged in parallel at intervals, and the first connecting part and the second connecting part are connected.
6. The eyeglasses according to claim 4, wherein the number of said thermocouple units is plural, and the plural thermocouple units are connected in sequence;
the first metal electrodes and the second metal electrodes are alternately arranged in series.
7. The eyeglasses according to claim 4 or 6, wherein the first metal electrode is made of copper, and the second metal electrode is made of constantan;
the thickness of the first metal electrode and the second metal electrode is 50 nm-300 nm.
8. The eyeglasses according to claim 1, wherein the transparent conductive heating film comprises a transparent conductive film, a positive bus bar and a negative bus bar, the transparent conductive film is a metal oxide film or a metal mesh film, and the positive bus bar and the negative bus bar are respectively arranged on two sides of the transparent conductive film.
9. The eyeglasses according to claim 1, further comprising a circuit board and a data interface connected to the circuit board, wherein the control unit is disposed on the circuit board.
10. An eyeglass antifogging method applied to the eyeglass of any one of claims 1 to 9, the eyeglass antifogging method comprising:
the first temperature sensor and the second temperature sensor respectively sense the ambient temperature and the lens temperature and send corresponding temperature signals to the control unit;
the control unit calculates a difference value between the ambient temperature and the lens temperature and judges whether the difference value meets a preset condition or not;
when the difference value meets the preset condition, the control unit controls the battery to supply power to the transparent conductive heating film, so that the transparent conductive heating film heats the lens.
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| CN202010574293.XA CN111624772A (en) | 2020-06-22 | 2020-06-22 | Glasses and glasses anti-fog method |
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| CN202010574293.XA CN111624772A (en) | 2020-06-22 | 2020-06-22 | Glasses and glasses anti-fog method |
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