CN213399109U - Glasses lens structure for trapped wave filtering correcting achromatopsia and amblyopia - Google Patents
Glasses lens structure for trapped wave filtering correcting achromatopsia and amblyopia Download PDFInfo
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Abstract
The utility model discloses a trapped wave filters glasses lens structure of correcting achromatopsia colour weakness, this structure include lens substrate and multilayer coating film layer, multilayer the coating film layer is arranged in producing trapped wave filtering effect separation and blocks the wave band of the visual pigment overlap region spectrum absorption/response curve in the different types of cone cells. For the patient, the spectrum transmittance of the lens is that for the patient, the original red light which can cause green response is filtered, and the partial spectrum which can cause green stimulation is filtered, and only the more red part is left, so that the patient with red and green weakness can have certain discrimination ability on red and green; the original green light which can cause red response is filtered by the lens, partial spectrum which can cause red stimulation is filtered, and only greener part is left, so that the red and green weak patient can have obvious discrimination capability on red and green.
Description
Technical Field
The utility model relates to a lens technical field especially relates to a trapped wave filters glasses lens structure of correcting achromatopsia colour weakness.
Background
The human eye has the ability to distinguish between black and white and color because of the presence of rods and cones on the retina of the human eye. The rod cells can detect the brightness information of different external environments, and the cone cells are mainly used for distinguishing various colors, wherein the cone cells can be divided into L, M, S red, green and blue cone cells. Each cone cell has different spectral response degrees to the incident spectrum, the L-type red cone cell mainly responds to the long wave region of the visible spectrum, the S-type blue cone cell responds to the short wave region of the visible spectrum, and the M-type green cone cell responds to the middle wave band of the visible spectrum. Under normal conditions, the spectral response curves of L-type red cone cells and M-type green cone cells are shifted by about 40nm, the hue and shade seen by people with normal color vision exceed one million chroma, but when the spectral response curves of the M-type green cone cells and the L-type red cone cells are close to or even coincide with each other, the color vision of human eyes is abnormal to generate red-green blindness and red-green weakness, the seen color range is greatly reduced, the color of a visual field is poor in saturation and fades, and some colors can cause disorder or are difficult to distinguish. At least 8 out of every 100 men (8%) and 1 out of 200 women (0.5%) have red-green vision impairment (CVD), amounting to about 1300 million patients in the united states and about 3.5 million patients worldwide. There is currently no drug or other medical treatment to treat or correct this color vision disorder.
The existing similar color blindness and color weakness correcting lens is formed by adding special toner into color master batch to form a certain special proportion content before injection molding of lens material, and then mixing, injecting and injection molding together. The color blindness and color weakness correcting lens produced in the market at present has the following defects: the used material has heavy smell, the comfort of a wearer is influenced, and when the product is injection molded and injection molded, the injection molding working temperature is usually 260 ℃ and 280 ℃ or above, the special toner is easy to cause carbonization/black spots, the survival rate is less than 90 percent, the barrier property is easy to lose efficacy, and the reject ratio is up to more than 20 percent.
SUMMERY OF THE UTILITY MODEL
The utility model provides a trapped wave filters glasses lens structure of correcting achromatopsia colour weakness.
The utility model provides a following scheme:
an eyeglass lens structure for correcting color blindness and color weakness by notch filtering, comprising:
the lens comprises a lens substrate and a plurality of coating film layers, wherein the coating film layers are mutually overlapped and formed on one side of the lens substrate; the plurality of coating film layers are used for generating a trap filtering effect to block and block the wave bands of the spectrum absorption/response curves of the visual pigment overlapping regions in different types of cone cells;
the first layer of the multiple coating film layers is a film series film stack which traps blue-green side band color;
the second layer of the plurality of coating film layers is a coupling superposed film layer;
the third layer of the plurality of coating film layers is a film series film stack for trapping red and green side bands and blocking colors.
Preferably: the central wavelength of the trapped wave for blocking the film series stack of the blue-green side band color is 490 nanometers.
Preferably: the film system structure of the film system film stack with the color of the blue-green side band blocked by the trapped wave is Sub [ L/2 HL/2]Λ6Air；
L represents a low-refractive index coating material silicon dioxide coating film layer with the optical film thickness of one quarter of the central wavelength;
h represents a high-refractive-index film material titanium pentoxide film layer with the central wavelength of one fourth of the optical film thickness.
Preferably: the coupling superposition film layer is a layer L layer with the thickness of one quarter of the optical wavelength film;
l represents a low refractive index coating material silicon dioxide coating film layer with the optical film thickness of one fourth of the central wavelength.
Preferably: the central wavelength of the notch of the film stack for blocking the red and green side bands is 580 nanometers.
Preferably: the film system structure of the film system film stack for trapping blue-green side band color is Sub [ A/2 BA/2 ]]Λ6Air；
A represents a low refractive index coating material silicon dioxide coating film layer with the optical film thickness of one quarter of the central wavelength;
b represents a high-refractive-index film material titanium pentoxide film layer with the central wavelength of one fourth of the optical film thickness.
Preferably: the lens substrate is made of any one of a glass substrate, a polycarbonate substrate, a nylon substrate, a polymethyl methacrylate substrate, an acrylic substrate, an MR-8 substrate, an MR-7 substrate and a TAC polarizer substrate.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
by the utility model, a glasses lens structure for correcting color blindness and color weakness by trapped wave filtering can be realized, and in an implementation mode, the structure can comprise a lens substrate and a plurality of coating film layers, wherein the coating film layers are mutually overlapped and formed on one side of the lens substrate; the plurality of coating film layers are used for generating a trap filtering effect to block and block the wave bands of the spectrum absorption/response curves of the visual pigment overlapping regions in different types of cone cells; the first layer of the multiple coating film layers is a film series film stack which traps blue-green side band color; the second layer of the plurality of coating film layers is a coupling superposed film layer; the third layer of the plurality of coating film layers is a film series film stack for trapping red and green side bands and blocking colors. For the patient, the spectrum transmittance of the lens is that for the patient, the original red light which can cause green response is filtered by the lens, so that the partial spectrum which can cause green stimulation is filtered, and only the more red part is left, so that the patient with red and green weakness can have certain discrimination ability on red and green; the original green light which can cause red response is filtered by the lens, partial spectrum which can cause red stimulation is filtered, and only greener part is left, so that the red and green weak patient can have obvious discrimination capability on red and green. The structure that this application provided still has the rete compactness, and the hardcoat layer uses for a long time durable, and the wavelength drift is little, can clean, resistant high low temperature, corrosion-resistant characteristics.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a spectacle lens structure for correcting color blindness and color weakness by notch filtering according to an embodiment of the present invention;
FIG. 2 is a graph of the spectral absorption/response of normal red, green and blue cones;
fig. 3 is a graph of the spectral frequency response of cone cells from a red-green dyschromatopsia/trichromatopsia patient.
In the figure: the lens comprises a lens substrate 1, a film series film stack 2 for trapping blue-green side band color, a coupling superposition film layer 3 and a film series film stack 4 for trapping red-green side band color.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
A new research conducted by cooperation of the California university Davis Eye Center (UC Davis Eye Center) and the French INSERM stem cell and brain research discovers that the color vision of red-green color vision defects (or abnormal trichromatism) of the most common types can be enhanced by adopting special glasses lenses designed by the spectral notch with advanced technology; in the research, the contrast is also realized, when the color blindness test object does not wear the glasses, the color identification and the color experience expansion also prove that the special glasses lens has great difference with the glasses.
The application provides a glasses lens structure for correcting achromatopsia and achromatopsia by Notch negative filtering, which aims to increase the interval between color channels and enhance chroma/chromatic aberration response to help achromatopsia patients to see colorful and splendid colors with rich visual fields more vividly and more clearly, can enhance the color reaction of trichromatism (red-green vision defect) after long-term use, can lead to stronger chromatic aberration contrast response increase after being continuously used for more than two weeks, and is still effective when testing is carried out under the condition of not using the special Filter, the change modification of the photosensitive signal activates the plastic receptor rear matrix in the brain, thereby proving self-adaptive visual response and being capable of recovering vision.
The application provides a negative optical filtering of trapped wave corrects glasses lens structure of achromatopsia colour weakness adopts the band-pass of trapped wave technique separation to block the wave band of the visual pigment overlap region spectral absorption/response curve in the different kinds of cone cells. Notch filtering, also known as negative filtering, can attenuate light in a particular wavelength range (the stop band) to a very low level with little or low intensity loss through most wavelengths.
Notch filtering techniques can pass most wavelengths and attenuate light within a particular wavelength range (the stop band) to very low levels. The notch filtering technology is to suppress the transmittance in a specific wavelength range band, and to improve the transmittance outside the band, so that very little light can transmit in the specific wavelength range band, and has the advantages of high transmittance, deep cut-off, narrow cut-off band and the like.
The normal human eye senses the red, green and blue cone cells stimulated by the color vision, the visual pigments in the cone cells of different types have different spectrum absorption/response curves, when the external spectrum is transmitted to the retina, the three cells have different frequency responses, different stimulation signals are generated and transmitted to a plastic receptor rear matrix in the brain through the optic nerve, and the color vision is formed. For example, the Spectral frequency response of cone cells of red-green amblyopia (abnormal trichromatism) is abnormal, and a Spectral Overlap region (Spectral Overlap) is generated, so that when the cone cells which are originally responsible for green are stimulated by red-bias light, the cone cells also generate response, thereby causing the abnormal color vision.
According to the glasses lens structure for correcting achromatopsia and achromatopsia through notch negative light filtering, for a patient, the spectrum transmittance of the lens is enabled to be that for the patient, the original red light which can cause green response is filtered through the lens, so that partial spectrums which can cause green stimulation are filtered, and only the redder parts are left, so that the red and green patients can have certain discrimination ability on red and green; the original green light which can cause red response is filtered by the lens, partial spectrum which can cause red stimulation is filtered, and only greener part is left, so that the red and green weak patient can have obvious discrimination capability on red and green. The structure that this application provided still has the rete compactness, and the hardcoat layer uses for a long time durable, and the wavelength drift is little, can clean, resistant high low temperature, corrosion-resistant characteristics.
Examples
Referring to fig. 1, a spectacle lens structure for correcting color blindness and color weakness by notch filtering according to an embodiment of the present invention is shown in fig. 1, and the spectacle lens structure includes a lens substrate 1 and a plurality of coating film layers, wherein the plurality of coating film layers are stacked on each other and formed on one side of the lens substrate; the plurality of coating film layers are used for generating a trap filtering effect to block and block the wave bands of the spectrum absorption/response curves of the visual pigment overlapping regions in different types of cone cells;
the first layer of the multiple coating film layers is a film series film stack 2 with a trapped wave for blocking blue and green side bands; specifically, the central wavelength of the notch for blocking the film stack with the blue-green side band color is 490 nanometers. The film system structure of the film system film stack for trapping and blocking the blue-green side band color is Sub [ L/2H L/2 ]]Λ6Air；
L represents a low-refractive index coating material silicon dioxide coating film layer with the optical film thickness of one quarter of the central wavelength;
h represents a high-refractive-index film material titanium pentoxide film layer with the central wavelength of one fourth of the optical film thickness.
The second layer of the plurality of coating film layers is a coupling superposed film layer 3; the coupling stack film layer is a quarter-optical wavelength film thickness L layer.
The third layer of the plurality of coating film layers is a film series film stack 4 for trapping red and green side band colors. The central wavelength of the notch of the film stack for blocking the red and green side bands is 580 nanometers. The film system structure of the film system stack for trapping and blocking the blue-green side band color is Sub [ A/2B A/2 ]]Λ6Air；
A represents a low refractive index coating material silicon dioxide coating film layer with the optical film thickness of one quarter of the central wavelength;
b represents a high-refractive-index film material titanium pentoxide film layer with the central wavelength of one fourth of the optical film thickness.
The application provides a coating film rete structure membrane system principle is that the notch separation bluish-green side takes the color membrane system and the notch separation red green side takes the color membrane system two lambda 4 multilayer membrane system membrane piles that pile up from top to bottom add one deck and superpose behind the coupling layer L layer in the middle of the stack, finally forms one kind and strains out the complete correction achromatopsia anomalous trichromatism lens rete of the biggest spectral band of spectrum overlapping in those red green vision anomaly patients, here the coupling layer of superpose for the thick L layer of one deck quarter optical wavelength membrane. As can be seen from fig. 3, the overlapping region of the blue and green spectra is formed around 490nm, so the center wavelength of the trap for the blue-green side-band color film stack that is blocked by the trap provided by the present application is selected to be 490 nm. The overlapping region of the red and green spectra is formed around a wavelength of 580 nm. Therefore, the central wavelength of the notch of the film stack for blocking the red and green side bands is 580 nanometers.
The final overall film system is:
Sub 1.56{[L/2 H L/2]Λ6L[A/2 B A/2]Λ6}1.56Air
l and A each represents a low refractive index film material (SiO) having a central wavelength of one quarter of the optical film thickness2) Silicon dioxide coating film layer。
H and B each represents a high refractive index film material (Ti) having a central wavelength of one quarter of the optical film thickness3O5) A titanium pentoxide coating film layer.
The number of cycles of the membrane layer of the membrane stack is 6.
When the film is prepared, various factors are comprehensively considered and selected in aspects of transparency of film materials, absorption of the film materials, mechanical firmness, chemical stability, film stress and the like. The adopted hardware technology is electron beam evaporation coating and Ion Beam Assisted Deposition (IBAD), has the advantages that the prepared film is firm in adhesion, compact in structure and good in environmental stability, and completely meets related environmental test requirements.
When the structure is manufactured, the distance between a lens substrate and an evaporant is 50 cm-80 cm, the temperature of growing crystals of the substrate is 40-60 ℃, the oxygen charging amount is 30-100 SCCM, the beam current density is 100 mA-120 mA, and the vacuum degree is 1 multiplied by 10^ (3) Pa-8 multiplied by 10^ (3) Pa when the structure works; ion bombardment for 3-5 minutes before coating, and low refractive index coating material (SiO)2) The deposition rate of the silicon dioxide is 0.8 nm/s-6.0 nm/s; high refractive index film material (Ti)3O5) The deposition rate of the titanium pentoxide is 0.5 nm/s-5.0 nm/s, and the power of the electron gun is kept at 50% -80%; the anode voltage of the electron gun is 100-130V, and the anode current is 3A-10A; cathode voltage is 20V-50V, and cathode current is 12A-20A; and after the plating is stopped, the temperature is reduced for half an hour, and then the lens is taken out from the air-filled vacuum chamber.
The lens substrate Sub includes, but is not limited to, the following: glass substrates of optical lenses and sunglasses, and substrates of polycarbonate PC, nylon PA, CR-39, PMMA, AC acrylic, MR-8 and MR-7 other resin lenses and TAC polaroids.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. An eyeglass lens structure for correcting color blindness and color weakness by notch filtering, comprising:
the lens comprises a lens substrate and a plurality of coating film layers, wherein the coating film layers are mutually overlapped and formed on one side of the lens substrate; the plurality of coating film layers are used for generating a trap filtering effect to block and block the wave bands of the spectrum absorption/response curves of the visual pigment overlapping regions in different types of cone cells;
the first layer of the multiple coating film layers is a film series film stack which traps blue-green side band color;
the second layer of the plurality of coating film layers is a coupling superposed film layer;
the third layer of the plurality of coating film layers is a film series film stack for trapping red and green side bands and blocking colors.
2. The eyewear lens structure of claim 1, wherein the notch filters the blue-green sideband color film stack at a notch center wavelength of 490 nm.
3. The spectacle lens structure for notch-filtered correction of achromatopsia and achromatopsia as recited in claim 2 wherein said notch-blocking blue-green sideband color film system film stack has a Sub [ L/2H L/2 ] film system structure]Λ6Air；
L represents a low-refractive index coating material silicon dioxide coating film layer with the optical film thickness of one quarter of the central wavelength;
h represents a high-refractive-index film material titanium pentoxide film layer with the central wavelength of one fourth of the optical film thickness.
4. The spectacle lens structure for notch-filtered correction of achromatopsia and achromatopsia as recited in claim 1, wherein said coupling stack film layer is a quarter-wavelength film thick L layer;
l represents a low refractive index coating material silicon dioxide coating film layer with the optical film thickness of one fourth of the central wavelength.
5. The eyewear lens structure of claim 1, wherein the notch filters the red and green sidebands color film stack and the notch center wavelength is 580 nm.
6. The eyewear lens structure of claim 5, wherein the film system structure of the notch-blocking blue-green side band color film system stack is Sub [ A/2B A/2 ]]Λ6Air；
A represents a low refractive index coating material silicon dioxide coating film layer with the optical film thickness of one quarter of the central wavelength;
b represents a high-refractive-index film material titanium pentoxide film layer with the central wavelength of one fourth of the optical film thickness.
7. The spectacle lens structure for notch-filtered correction of achromatopsia and achromatopsia as recited in claim 1, wherein said lens substrate is made of any one of glass substrate, polycarbonate substrate, nylon substrate, polymethyl methacrylate substrate, acrylic substrate, MR-8 substrate, MR-7 substrate, TAC polarizer substrate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022449345.9U CN213399109U (en) | 2020-10-29 | 2020-10-29 | Glasses lens structure for trapped wave filtering correcting achromatopsia and amblyopia |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022449345.9U CN213399109U (en) | 2020-10-29 | 2020-10-29 | Glasses lens structure for trapped wave filtering correcting achromatopsia and amblyopia |
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| CN213399109U true CN213399109U (en) | 2021-06-08 |
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| CN202022449345.9U Active CN213399109U (en) | 2020-10-29 | 2020-10-29 | Glasses lens structure for trapped wave filtering correcting achromatopsia and amblyopia |
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Address after: No. 10 Hutou Road, Haicang District, Xiamen City, Fujian Province, 361000 Patentee after: Eyepol Polarizing Technology (XIAMEN) Co.,Ltd. Address before: 361028 area a on the first floor, area a on the second floor, area a on the third floor, area a on the fourth floor and area a on the fifth floor, no.128-3, Houxiang South Road, Haicang District, Xiamen City, Fujian Province Patentee before: EYEPOL POLARIZING TECHNOLOGY (XIAMEN) Co.,Ltd. |
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