CN113253486A

CN113253486A - Anti-glare high-contrast lens combination

Info

Publication number: CN113253486A
Application number: CN202010094623.5A
Authority: CN
Inventors: 许博义
Original assignee: Ecoshine Technology Co ltd
Current assignee: Ecoshine Technology Co ltd
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2021-08-13

Abstract

An anti-glare high-contrast lens combination comprises a lens and a filter layer arranged on the lens. The transmittance of the filter layer to visible light is 75-80%, and the blocking rate to light with wavelength of 570-590 nm is 20-30%. By blocking 20-30% of light with the wavelength of 570-590 nm, the anti-glare high-contrast lens combination can have the effects of resisting glare and improving contrast, and the transmittance of the anti-glare high-contrast lens combination for visible light is still 75-80%, so that the anti-glare high-contrast lens combination is also suitable for being worn at night.

Description

Anti-glare high-contrast lens combination

Technical Field

The invention relates to a lens for spectacles, in particular to an anti-glare high-contrast lens combination.

Background

Glare is glare, i.e., glare light, i.e., light having a light intensity exceeding the range of the eye load. When the eyes of the observer are stimulated by glare, there is a danger that the environment will be temporarily invisible. At present, most of the existing anti-glare lenses filter light in a specific polarization direction through a polarization principle so as to reduce the overall intensity of the light and solve the problem of glare caused by too strong light intensity. Although the effect of using a polarizer to treat glare is good, the intensity of light is excessively reduced, that is, the intensity of visible light is reduced to about half (50%) of the original intensity, which does not meet the regulatory requirement that the transmittance of visible light used for wearing at night needs to be greater than 75%, and thus the polarizer is not suitable for wearing at night, cannot have the effect of being used both day and night, and needs to be improved.

Disclosure of Invention

It is an object of the present invention to provide an anti-glare high contrast lens combination which overcomes at least one of the disadvantages of the prior art.

The anti-glare high-contrast lens combination comprises a lens and a filter layer arranged on the lens, wherein the transmittance of the filter layer to visible light is 75% -80%, and the blocking rate to light with the wavelength of 570-590 nm is 20% -30%.

According to the anti-glare high-contrast lens combination, the blocking rate of the lens or the filter layer to light with the wavelength of 400-420 nm is 75-100%.

According to the anti-glare high-contrast lens combination, the blocking rate of the lens or the filter layer to light with the wavelength of 420nm is 75% -100%.

According to the anti-glare high-contrast lens combination, the blocking rate of the lens or the filter layer to light with the wavelength of 450-460 nm is 40-60%.

According to the anti-glare high-contrast lens combination, the blocking rate of the lens or the filter layer to light with the wavelength of 455nm is 40% -60%.

According to the anti-glare high-contrast lens combination, the filter layer has a blocking rate of 35-50% for light with a wavelength of 780-1300 nm.

The transmittance of the filter layer to visible light is a%, a is an integer between 75 and 80, the blocking rate to light with wavelength of alpha nm is b%, alpha is an integer between 570 and 590, and b is an integer between 20 and 30. That is, the transmittance of the filter layer with respect to visible light is 75% to 80%, and the blocking rate with respect to light having a wavelength of 570nm to 590nm is 20% to 30%.

Among them, when the transmittance of visible light is less than 75%, it is not suitable for use at night and does not meet the legal requirements, and when the transmittance of visible light is more than 80%, the anti-glare effect is insufficient. Therefore, when the transmittance of visible light is limited to 75% to 80% as described above, the anti-glare high-contrast lens combination has the characteristic of being usable both day and night and has the anti-glare effect.

Since the human eye is most sensitive to the intensity of light having a wavelength of 570nm to 590nm, an anti-glare effect can be produced by blocking light having a wavelength of 570nm to 590nm, or by reducing the intensity of light having a wavelength of 570nm to 590 nm. In addition, since the crystalline lens slowly turns yellow after aging, which results in a decrease in the resolving power of the eye with respect to color, blocking light that falls within the yellow wavelength range (570nm to 590nm) at the same time can improve the resolving power of the eye with respect to color, thereby producing an effect similar to that of improving contrast. Therefore, the anti-glare high-contrast lens combination provided by the invention can simultaneously generate the anti-glare and contrast-improving effects by blocking 20% -30% of light with the wavelength of 570-590 nm.

When the blocking rate of the filter layer to the light with the wavelength of 570nm to 590nm is lower than 20%, the anti-glare and contrast improvement effects are not good, and when the blocking rate of the filter layer to the light with the wavelength of 570nm to 590nm is greater than 30%, the problem that the visible light transmittance is lower than 75% may occur. Therefore, the blocking rate for light having a wavelength of 570nm to 590nm should be limited to 20% to 30% as described above.

Preferably, the blocking rate of the lens or the filter layer for light with a wavelength of β nm is c%. Beta is an integer of 400 to 420, and c is an integer of 75 to 100. That is, the blocking rate of the lens or the filter layer for light with the wavelength of 400nm to 420nm is 75% to 100%.

Because the light with the wavelength of 400 nm-420 nm belongs to the part with stronger energy in the solar visible light, the light with the wavelength of 400 nm-420 nm is greatly blocked, and the damage of the solar visible light to eyes can be effectively reduced.

When the blocking rate of the lens or the filter layer to the light with the wavelength of 400-420 nm is lower than 75%, the damage of the solar visible light to eyes can not be effectively reduced, and in addition, because the identification rate of human eyes to the light with the wavelength of below 420nm is not high, the light with the wavelength has little help to vision, the defect is greater than the benefit, the light can be shielded as much as possible and even completely shielded, and the visibility is not easily influenced.

Preferably, the blocking rate of the lens or the filter layer for light with a wavelength of γ nm is d%, γ is an integer between 450 and 460, and d is an integer between 40 and 60. That is, the blocking rate of the lens or the filter layer for light with a wavelength of 450nm to 460nm is 40% to 60%.

Because the light with the wavelength of 450 nm-460 nm is the blue light wavelength of the 3C product or the automobile lamp, the light with the wavelength of 450 nm-460 nm, especially the most common light with the wavelength of 455nm, is filtered, the damage of the 3C product or the automobile lamp to eyes is reduced, and the problem of physiological clock disorder possibly caused by blue light stimulation is solved.

Preferably, the light with a wavelength of δ nm is blocked by the filter layer with a blocking rate of e%, δ is an integer between 780 and 1300, and e is an integer between 35 and 50. That is, the filter layer has a blocking ratio of 35% to 50% with respect to light having a wavelength of 780nm to 1300 nm.

Because the light with the wavelength of 780 nm-1300 nm belongs to infrared rays, the light with the wavelength of 780 nm-1300 nm is blocked, the temperature brought by the light can be reduced, namely, the heat insulation effect can be generated. When the blocking rate of the filter layer to light with the wavelength of 780 nm-1300 nm is lower than 35%, the filter layer cannot effectively insulate heat.

The anti-glare high-contrast lens combination has the following effects: by blocking 20-30% of light with the wavelength of 570-590 nm, the anti-glare effect and the effect similar to the contrast improvement can be produced, the penetration rate of visible light is still 75-80%, and the anti-glare film is suitable for being used at night and has the characteristic of being used both day and night.

Drawings

Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a fragmentary view illustrating example 1 of an anti-glare high contrast lens assembly of the present invention.

Detailed Description

EXAMPLE 1

Referring to fig. 1, example 1 of the anti-glare high-contrast lens assembly of the present invention is prepared by mixing 0.18g of blue dye, 0.027g of green dye, 0.5 g of infrared absorber, 1 g of dispersant, 30g of binder, and 70g of solvent to form a coating. Then, the coating is applied to a transparent (about 85-90% of visible light transmittance) lens 11 to form a film, so as to obtain the anti-glare high-contrast lens assembly 1 of example 1. That is, embodiment 1 includes the lens 11 and a filter layer 12 formed on the lens 11 by the coating material. The technique of forming a layer on the lens 11 by using the coating material is common knowledge, and can be performed by a known method such as coating or impregnation, for example, and thus will not be described in detail here.

The purchased sources of the various drugs used in this example 1 and the following examples and comparative examples are shown in table 1, and the specific dosage forms and amounts of the ingredients and the corresponding property tests described below are shown in tables 2 to 5.

Penetration and Barrier Rate testing

The transmission or blocking rate of example 1 for different wavelengths of light was measured with a spectrophotometer available from Hitachi corporation and model No. UH4150 and recorded in table 2.

Test for Heat insulation

The thermal insulation effect of example 1 was tested with a diaphragm temperature tester available from lin technologies and having a model number L300. The thermal insulation effect is expressed as a reduced temperature difference and is reported in table 2.

EXAMPLES 2 to 7 AND COMPARATIVE EXAMPLES 1 to 3

Examples 2 to 7 and comparative examples 1 to 3 are similar to example 1, except that the formulation and the amount of each component used in each example or each comparative example are different, and the test evaluation results are also different. The actual dosage forms used in examples 2 to 7 and comparative examples 1 to 3, the amounts of the respective components used, and the corresponding test results are shown in tables 2 to 5.

In example 5, 0.7g of an infrared absorber was mixed with 0.4g of ATO and NIR10210.3 g, respectively, to give a total amount of 0.7 g. Example 6 an infrared absorber was prepared by mixing FDN0100.2g and ATO 0.4g to give a total of 0.6 g. Example 7 does not have blue dye added and the lens 11 has the ability to block light at wavelengths of 420nm and 450 nm.

Comparison of results

As can be seen from examples 1 to 7, examples 1 to 7 have anti-glare and contrast-improving effects because the blocking rate of examples 1 to 7 for light having a wavelength of 570nm to 590nm is 20 to 30%. On the other hand, in comparative example 2, since the light blocking ratio for the wavelength of 570nm to 590nm is only 15%, the effects of glare resistance and contrast improvement are not obtained.

As can be seen from examples 1 to 7, examples 1 to 7 can satisfy the regulatory requirements for use at night and can be used both day and night, since examples 1 to 7 have a transmittance of 76% to 80% for light (i.e., visible light) having a wavelength of 400nm to 780 nm. In contrast, in comparative example 1, since the transmittance of visible light is only 72%, the material is not suitable for use at night but only for use during the day, which is not in accordance with the regulations.

From the examples 1 to 7, it can be seen that, since the blocking rate of the examples 1 to 7 for the light (i.e., infrared light) with the wavelength of 780nm to 1300nm is 35% to 50%, the heat insulation temperature difference of the examples 1 to 7 can reach more than 3 ℃, even 5 ℃, which is enough to see that the examples 1 to 7 can effectively insulate heat and improve the comfort when wearing in a sunny day. In contrast, in comparative example 3, since comparative example 3 has a blocking rate of only 10% with respect to infrared light, the heat insulating temperature difference is only 1 ℃, and the heat insulating effect felt by the wearer cannot be produced, and the wearing comfort cannot be improved.

In summary, the anti-glare high-contrast lens assembly 1 of the present invention has the following effects: by blocking 20-30% of light with the wavelength of 570-590 nm, the effects of glare resistance and contrast improvement are achieved, the penetration rate of visible light is still 75-80%, the requirements of regulations are met, and the LED lamp is suitable for being used at night and has the characteristic of being capable of being used both day and night.

The above description is only an embodiment of the present invention, and the scope of the claims of the present invention is not limited thereto, and the equivalent modifications made by the contents of the claims and the description of the present invention are also intended to be covered by the scope of the claims of the present invention.

Claims

1. An anti-glare high-contrast lens assembly comprises a lens and a filter layer disposed on the lens, wherein: the transmittance of the filter layer to visible light is 75-80%, and the blocking rate to light with wavelength of 570-590 nm is 20-30%.

2. The anti-glare high-contrast lens combination according to claim 1, wherein: the blocking rate of the lens or the filter layer to light with the wavelength of 400 nm-420 nm is 75% -100%.

3. The anti-glare high-contrast lens combination according to claim 1, wherein: the blocking rate of the lens or the filter layer to light with the wavelength of 420nm is 75-100%.

4. The anti-glare high-contrast lens combination according to claim 1, wherein: the blocking rate of the lens or the filter layer to the light with the wavelength of 450 nm-460 nm is 40% -60%.

5. The anti-glare high-contrast lens combination according to claim 1, wherein: the blocking rate of the lens or the filter layer to the light with the wavelength of 455nm is 40-60%.

6. The anti-glare high-contrast lens combination according to any one of claims 1 to 5, wherein: the filter layer has a blocking rate of 35-50% for light with a wavelength of 780-1300 nm.