High-definition spectrum precise control high-color contrast lens and preparation method thereof

Abstract

The invention discloses a high-definition spectrum precise-control high-color contrast lens and a preparation method thereof, the transmittance of the prepared lens in a visible light wave band of 400-700nm forms a high-fall wave crest and a high-fall wave trough through precise proportioning of specific toner, troughs with transmittance lower than 40% are respectively formed at the junctions of three primary colors, including 490-500nm (blue-green junction), 600-610nm (green-red junction) and 670-680nm (red-black junction), so that stray light is effectively filtered, and color interference and visual distortion are reduced; and the transmittance is greater than 70% near the central wavelengths of blue, green and red light, so that the bright and clear view is ensured. The design enables the lens to form high-contrast wave amplitudes at different wave bands, remarkably improves the spectrum precision control high-color contrast ratio, enables the visual experience to be clearer, more real and more exquisite, and is high in color rendition degree. The lens is suitable for the field of various optical lenses, including myopic lenses, protective lenses and sunglass lenses, not only can meet the requirement for comfortable vision in an indoor low-light environment, but also can resist outdoor strong light stimulation, and ensures a high-definition and high-contrast visual field.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and particularly relates to a high-definition spectrum precision-controlled high-color contrast lens and a preparation method thereof. Background Art

[0002] Traditional color-changing lenses often face the problem of stray light interference at the junction of the three primary color spectra. This not only causes color distortion but may also lead to visual fatigue, affecting the visual experience of the wearer. To address this issue, some products that attempt to reduce stray light interference by deepening the lens color have emerged on the market. However, while these dark-colored color-changing lenses eliminate stray light, they reduce the light transmittance in each wavelength band, resulting in a significant decline in the light transmission performance of the lens. When wearing such lenses daily, the wearer may feel that the line of sight is dim, thus affecting normal visual activities and the convenience of daily life. In addition, the application scenarios of such dark lenses are relatively limited and are more suitable for protective use in strong light environments, rather than for daily wear lens types such as myopia lenses that require high light transmittance and a clear field of view.

[0003] In the prior art, there are also patents such as CN112592573A that disclose a high-contrast high-definition lens and a preparation method thereof, which prepare a high-contrast high-definition lens through a specific dye combination. This patent discloses a lens prepared from an organic resin, a phthalocyanine dye, a cyanine dye, and an azo nickel metal compound. While this solution eliminates stray light, it also significantly reduces the light transmittance in the main wavelength bands, thereby affecting the overall light transmission performance of the lens. In addition, the gap between the lowest transmittance and the highest transmittance is small, resulting in limited contrast improvement and difficulty in meeting the wearer's requirements for a high-definition and high-contrast field of view under different lighting conditions. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-definition spectrum precision-controlled high-color contrast lens and a preparation method thereof, which can effectively reduce the transmittance of specific junction light while maintaining a high light transmittance in the main wavelength bands, so that the lens has the effects of high definition, spectrum precision control, high-color contrast, and no distortion.

[0005] To achieve the above object, the solution of the present invention is: a preparation method of a high-definition spectrum precision-controlled high-color contrast lens, comprising the following steps:

[0006] S1. Weigh the following raw materials by weight parts: 100 parts of organic resin, 0.6 - 0.9 parts of blue absorption dye, 0.7 - 1.1 parts of vanadium complex of heterocyclic compound, and 0.3 - 0.6 parts of phthalocyanine organic dye;

[0007] The blue absorption dye is obtained from Jiangxi Luote Chemical Co., Ltd., and the model is KLOTSORB VL 490K;

[0008] The vanadium complex of the heterocyclic compound is obtained from Yamada Chemical Co., Ltd. in Japan, with the model number FDR-001 604nmBlue;

[0009] The phthalocyanine organic dye is obtained from Titanium Sun Chemical Pigment Co., Ltd., with the model number Blue K7104LW;

[0010] S2. After mixing and stirring the weighed raw materials evenly, granulation is carried out;

[0011] S3. The granulated raw materials are subjected to dehumidification and drying treatment;

[0012] S4. The dried raw materials are melted and then injected into a lens mold for molding.

[0013] Furthermore, the organic resin is polycarbonate, polyurethane resin, CR-39 resin or PMMA.

[0014] Furthermore, the raw materials used for preparing the high-definition spectral precision control high-color contrast lens, by weight, include 100 parts of organic resin, 0.7 - 0.8 parts of blue absorption dye, 0.9 - 1.0 parts of vanadium complex of heterocyclic compound, and 0.4 - 0.5 parts of phthalocyanine organic dye.

[0015] Furthermore, the raw materials used for preparing the high-definition spectral precision control high-color contrast lens, by weight, include 100 parts of organic resin, 0.75 - 0.8 parts of blue absorption dye, 0.95 - 1.0 parts of vanadium complex of heterocyclic compound, and 0.45 - 0.5 parts of phthalocyanine organic dye.

[0016] Furthermore, the raw materials used for preparing the high-definition spectral precision control high-color contrast lens, by weight, include 100 parts of polycarbonate, 0.77 parts of blue absorption dye, 0.99 parts of vanadium complex of heterocyclic compound, and 0.47 parts of phthalocyanine organic dye.

[0017] Furthermore, the raw materials used for preparing the high-definition spectral precision control high-color contrast lens, by weight, include 100 parts of polycarbonate, 0.85 parts of blue absorption dye, 1.05 parts of vanadium complex of heterocyclic compound, and 0.3 parts of phthalocyanine organic dye.

[0018] Furthermore, the raw materials used for preparing the high-definition spectral precision control high-color contrast lens, by weight, include 100 parts of polycarbonate, 0.6 parts of blue absorption dye, 0.7 parts of vanadium complex of heterocyclic compound, and 0.6 parts of phthalocyanine organic dye.

[0019] The present invention also provides a high-definition spectral precision-controlled high-color contrast lens, which is prepared by the above-mentioned preparation method. The transmittance of the lens forms high-drop peaks and valleys in the visible light band of 400-700 nm. Among them, valleys with a transmittance lower than 40% are formed at 490-500 nm, 600-610 nm, and 670-680 nm bands at the junction of the three primary colors to filter out the stray light generated in these bands. In the remaining main visible light bands, peaks with a transmittance greater than 70% are formed near the central wavelengths of blue, green, and red light, and a high contrast is formed with the valleys.

[0020] After adopting the above solution, the beneficial effects of the present invention are as follows:

[0021] For the high-definition spectral precision-controlled high-color contrast lens and its preparation method of the present invention, dyes with narrow-band absorption for specific spectra are selected to achieve the high-drop peak and valley structure of the lens in the visible light band. Among them, the blue absorption dye is for absorbing light at 490 nm - 500 nm (blue-green junction); R001-604 dye is for absorbing light at 600 nm - 610 nm (green-red junction); phthalocyanine organic dye is for absorbing light at 670 nm - 680 nm (red-black junction).

[0022] This special spectral transmittance characteristic enables the lens to form valleys with a light transmittance less than 40% at the junction of the three primary color spectra, effectively filtering out the stray light generated in these areas, greatly reducing the color interference and visual distortion phenomena. At the same time, the light transmittance of the lens in the three main visual bands of blue, green, and red remains above 70%, ensuring sufficient brightness transmission. In addition, a high contrast amplitude is formed between the peaks and valleys of the light transmittance of the lens in different bands, greatly enhancing the high contrast of the lens and making the visual experience clearer and more real.

[0023] This lens is applicable to a variety of optical lens fields, including myopia lenses, protective lenses, and sunglasses, which can not only meet the comfortable visual needs in low-light indoor environments but also resist strong outdoor light stimuli, ensuring high definition and high contrast vision. Brief Description of the Drawings

[0024] Figure 1 is the amplitude spectrum diagram of Embodiment 1 of the present invention;

[0025] Figure 2 is the amplitude spectrum diagram of Embodiment 2 of the present invention;

[0026] Figure 3 is the amplitude spectrum diagram of Embodiment 3 of the present invention;

[0027] Figure 4 is the amplitude spectrum diagram of Comparative Example 1 of the present invention;

[0028] Figure 5 is the amplitude spectrogram of Comparative Example 2 of the present invention;

[0029] Figure 6 is the amplitude spectrogram of Comparative Example 3 of the present invention;

[0030] Figure 7 is the amplitude spectrogram of Comparative Example 4 of the present invention. Detailed Embodiments

[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] The present invention provides a method for preparing a high-definition spectral precision-controlled high-color contrast lens. The raw materials used for preparing the high-definition spectral precision-controlled high-color contrast lens, by weight, include 100 parts of an organic resin, 0.6 - 0.9 parts of a blue absorption dye, 0.7 - 1.1 parts of a vanadium complex of a heterocyclic compound, and 0.3 - 0.6 parts of a phthalocyanine organic dye.

[0033] The organic resin can be selected from, but not limited to, commercially available high-performance and high-transparency thermoplastic or thermosetting resin materials such as polycarbonate, polyurethane resin, CR-39 resin, or PMMA (polymethyl methacrylate). These resin materials all have good processing properties and optical properties, and can meet various requirements for lens preparation.

[0034] The blue absorption dye is the blue absorption dye of model LOTSORB VL 490K provided by Jiangxi Luote Chemical Co., Ltd., and its appearance is red powder. The LOTSORB VL 490K dye can absorb visible light of specific wavelengths, especially light in the blue light region, and the maximum absorption wavelength is 490nm - 495nm.

[0035] The vanadium complex of the heterocyclic compound is a coloring dye of model FDR-001 604nmBlue provided by Yamada Chemical Co., Ltd. of Japan, and the maximum absorption wavelength of this dye is about 604nm.

[0036] The phthalocyanine organic dye is of the model provided by Titanium Sun Chemical Pigment (Shanghai) Co., Ltd. Phthalocyanine blue dye of BlueK 7104LW, with a dark blue powder appearance, and the components are as follows: [N,N,N',N',N",N"-hexaethyl-29H,31H-phthalocyanine-C,C,C-trimethylammonium(2-)-N29,N30,N31,N32] copper, with a CAS number of 28654-73-1. This type of phthalocyanine blue dye has high light resistance, high weather resistance, high temperature resistance, and good anti-twist performance. It is widely used in industries such as plastics and plastics, as a colorant or pigment. This dye is targeted at absorbing light with wavelengths of 670 - 690 nm, which helps to form a low transmittance trough at the red-black junction in the lens.

[0037] The method for preparing the high-definition spectral precision control high-color contrast lens includes the following steps:

[0038] S1. Weigh the above-mentioned raw materials according to the stated parts by weight;

[0039] S2. After mixing and stirring the weighed raw materials evenly, add them to a granulator for granulation;

[0040] S3. Put the granulated raw materials into a dehumidifying dryer for dehumidifying and drying treatment;

[0041] S4. Add the dried raw materials to an injection molding machine to melt them, and inject them into a lens mold under high temperature and high pressure for molding. After cooling and solidifying, a lens with high definition and spectral precision control high-color contrast can be obtained.

[0042] The high-definition spectral precision control high-color contrast lens prepared by the method of the present invention forms high-drop peaks and troughs in the transmittance within the visible light band of 400 - 700 nm. Among them, at the junction of the three primary colors, including 490 - 500 nm (blue-green junction), 600 - 610 nm (green-red junction), and 670 - 680 nm (red-black junction), troughs with a transmittance lower than 40% are respectively formed to filter the stray light generated in these regions. In the remaining main visible light bands, including near the central wavelengths of blue, green, and red light, peaks with a transmittance greater than 70% are formed, with sufficient brightness transmission, making the field of view brighter and forming a high contrast with the troughs.

[0043] The beneficial effects of the present invention are verified through the following experiments:

[0044] For each example and comparative example, the raw materials are accurately weighed according to the raw material group ratio in Table 1. Then, lenses are prepared through the following steps: After mixing and stirring the weighed raw materials evenly, add them to a granulator for granulation; put the granulated raw materials into a dehumidifying dryer for dehumidifying and drying treatment; add the dried raw materials to an injection molding machine to melt them, and inject them into a lens mold under high temperature and high pressure for molding. After cooling and solidifying, a lens with high definition and spectral precision control high-color contrast can be obtained.

[0045] Finally, by comparing the transmittance of the lenses in the examples and the comparative examples at specific wavelengths, the effects of different raw material models and ratios on the optical properties of the lenses were analyzed.

[0046] Table 1 Raw material group ratios of each example and comparative example

[0047] Raw material Polycarbonate First toner Second toner Third toner Fourth toner Fifth toner Sixth toner Example 1 100 0.77 0.99 0.47 Example 2 100 0.85 1.05 0.3 Example 3 100 0.6 0.7 0.6 Comparative example 1 100 1.6 1.5 0.47 Comparative example 2 100 0.9 0.76 0.31 3.72 - Comparative example 3 100 0.99 0.47 0.77 Comparative example 4 100 0.77 0.99 0.47

[0048] In Table 1, the first color powder is a blue absorption dye with the model LOTSORB VL 490K provided by Jiangxi Luote Chemical Co., Ltd.; the second color powder is a coloring dye with the model FDR-001 604nm Blue provided by Yamada Chemical Co., Ltd. of Japan; the third color powder is a phthalocyanine blue dye with the model Blue K7104LW provided by Titanium Sun Chemical Pigment (Shanghai) Co., Ltd., with the CAS number 28654-73-1; the fourth color powder is an orange dye provided by Lanxess Chemical (China) Co., Ltd., with the CAS number 70546-25-7; the fifth color powder is a red dye provided by Lanxess Chemical (China) Co., Ltd., with the CAS number 21295-57-8; the sixth color powder is a yellow dye provided by Lanxess Chemical (China) Co., Ltd., with the CAS number 17772-51-9.

[0049] Table 2 Transmittance T (%) of the lenses in each example and comparative example at different wavelengths

[0050]

[0051] Example 1:

[0052] The lens in this example has a green appearance and a transmittance as high as 70%. Moreover, the solution in this example uses the least amount of color powder to achieve the best balance between color and transmittance effects.

[0053] From the spectrum Figure 1 and the spectral data in Table 2, it can be seen that the lens forms troughs with transmittances of 31.90T%, 32.05T%, and 31.00T% at three key wavelengths of 495nm, 605nm, and 675nm. These three troughs indicate that the lens can filter out the excess stray light at the intersection of the three primary colors. In the case of filtering out the stray light, the lens can present a true color situation, making the lens distortion-free. It minimizes the impact of the light at the intersection on normal vision, enhances the prominence of the target colors (i.e., the three colors of red, green, and blue) and their surrounding environment, and makes the object clearer.

[0054] Meanwhile, the lens maintained high transmittance at three wavelengths of 440 nm, 530 nm, and 635 nm, which were 76.30%, 80.00%, and 73.80% respectively. A distinct high-contrast amplitude was formed between these peaks and valleys, further enhancing the high-precision spectral control and high-color-contrast characteristics of the lens.

[0055] Example 2:

[0056] The raw materials used in this example refer to Table 1, and only the dosages of three dyes are different from those in Example 1. From Table 2 and Figure 2 It can be seen that the lens formed valleys with transmittance of 28.71%, 30.65%, and 36.66% at three key wavelengths of 495 nm, 605 nm, and 675 nm. And it maintained high transmittance at three wavelengths of 440 nm, 535 nm, and 630 nm, which were 79.1%, 82.3%, and 76% respectively. Compared with Example 1, the transmittance values changed slightly, but still maintained high clarity and high-precision spectral control and high-color contrast.

[0057] Example 3:

[0058] The raw materials used in this example refer to Table 1, and only the dosages of three dyes are different from those in Example 1. From Table 2 and Figure 3 It can be seen that the lens formed valleys with transmittance of 27.4%, 39.55%, and 25.2% at three key wavelengths of 500 nm, 610 nm, and 680 nm. And it maintained high transmittance at three wavelengths of 445 nm, 535 nm, and 640 nm, which were 74.8%, 78.5%, and 82.3% respectively, being a high-clarity and high-precision spectral control and high-color-contrast lens.

[0059] Comparative Example 1:

[0060] The raw materials used in this example refer to Table 1. Among them, due to the excessive addition amounts of the first color powder and the second color powder, the prepared lens could not meet the requirements of high clarity and high-precision spectral control and high-color contrast.

[0061] From Table 2 and Figure 4It can be seen that although the lens has low transmittance at three wavelengths of 495 nm, 605 nm, and 675 nm, with troughs of 20.6%, 22%, and 31% respectively, the transmittance at wavelengths of 440 nm and 530 nm is low, only about 50%. This indicates that the transmittance of the lens to blue light and green light is low, significantly reducing the contrast between the peaks and troughs. Therefore, the lens may exhibit problems such as color distortion and image blurring during actual use, especially in situations that require high contrast and color accuracy, such as outdoor activities, driving, or precision visual work. This distortion phenomenon is mainly due to the imbalance of spectral characteristics caused by improper addition of dyes, which in turn affects the overall visual performance of the lens.

[0062] Comparative Example 2:

[0063] The raw materials used in this example refer to Table 1. During the preparation of the lens in this comparative example, on the basis of the raw materials in Example 1, a fourth color powder was additionally added. The addition of this dye did not bring the expected performance improvement, but instead caused the prepared lens to fail to meet the requirements of high definition, precise spectral control, and high color contrast.

[0064] From Table 2 and Figure 5 It can be seen that although the lens has low transmittance at three wavelengths of 510 nm, 610 nm, and 680 nm, with troughs of 22.9%, 38.3%, and 36.2% respectively, the transmittance at a wavelength of 440 nm is low, only 62%. This indicates that the lens has a strong absorption or reflection of blue light, resulting in a large degree of attenuation when blue light passes through the lens. At the same time, there are problems of small wave amplitude and poor contrast.

[0065] Comparative Example 3:

[0066] The raw materials used in this example refer to Table 1. During the preparation of the lens in this comparative example, the first color powder in Example 1 was replaced with a fifth color powder, and the prepared lens could not meet the requirements of high definition, precise spectral control, and high color contrast.

[0067] From Table 2 and Figure 6 It can be seen that although the lens has low transmittance at the junction of the three primary colors, the transmittance at a wavelength of 440 nm is low, only 48.3%. This indicates that the transmittance of the lens to blue light is low, which in turn affects the overall light transmittance performance and contrast of the lens.

[0068] Comparative Example 4:

[0069] The raw materials used in this example refer to Table 1. During the preparation of the lens in this comparative example, the third color powder in Example 1 was replaced with a sixth color powder, and the prepared lens could not meet the requirements of high definition, precise spectral control, and high color contrast.

[0070] From Table 2 andFigure 7 It can be seen that the transmittance of the lens is relatively high at a wavelength of 675 nm, which is 46%. This indicates that the lens cannot effectively absorb the light at the junction of red and black, that is, it cannot effectively filter the stray light here. In addition, the transmittance at a wavelength of 635 nm is relatively low, only 58.8%. This shows that the transmittance of the lens to red light is low, which in turn affects the clarity and contrast of the lens.

[0071] The above description is only the preferred embodiment of the present invention and does not limit the design of this case. All equivalent changes made according to the key design of this case fall within the protection scope of this case.

Claims

1. A method for preparing a high-definition spectrum precisely controlled high-color contrast lens, characterized in that: It includes the following steps: S1. Weigh the following raw materials by weight parts: 100 parts of organic resin, 0.6 - 0.9 parts of blue absorption dye, 0.7 - 1.1 parts of vanadium complex of heterocyclic compound, and 0.3 - 0.6 parts of phthalocyanine organic dye; The blue absorption dye is obtained from Jiangxi Luote Chemical Co., Ltd., with the model number KLOTSORB VL 490K; The vanadium complex of the heterocyclic compound is obtained from Yamada Chemical Co., Ltd. of Japan, with the model number FDR - 001 604nm Blue; The phthalocyanine organic dye is obtained from Titanium Yang Chemical Pigment Co., Ltd., and the model is Blue K7104LW; S2. After mixing and stirring the weighed raw materials evenly, granulation is carried out; S3. The granulated raw materials are subjected to dehumidification and drying treatment; S4. The dried raw materials are melted and then injected into a lens mold for molding.

2. The preparation method of a high-definition spectral precision-controlled high-color contrast lens according to claim 1, characterized in that: The organic resin is polycarbonate, polyurethane resin, CR - 39 resin or PMMA.

3. The preparation method of a high-definition spectral precision-controlled high-color contrast lens as described in claim 1, characterized in that: The raw materials used for preparing the high - definition spectral precision - controlled high - color - contrast lens, by weight parts, include 100 parts of organic resin, 0.7 - 0.8 parts of blue absorption dye, 0.9 - 1.0 parts of vanadium complex of heterocyclic compound, and 0.4 - 0.5 parts of phthalocyanine organic dye.

4. The preparation method of a high-definition spectral precision-controlled high-color contrast lens according to claim 1, characterized in that: The raw materials used for preparing the high - definition spectral precision - controlled high - color - contrast lens, by weight parts, include 100 parts of organic resin, 0.75 - 0.8 parts of blue absorption dye, 0.95 - 1.0 parts of vanadium complex of heterocyclic compound, and 0.45 - 0.5 parts of phthalocyanine organic dye.

5. The preparation method of a high-definition spectral precision-controlled high-color contrast lens according to claim 1, characterized in that: The raw materials used for preparing the high - definition spectral precision - controlled high - color - contrast lens, by weight parts, include 100 parts of polycarbonate, 0.77 parts of blue absorption dye, 0.99 parts of vanadium complex of heterocyclic compound, and 0.47 parts of phthalocyanine organic dye.

6. The preparation method of a high-definition spectrum precision-controlled high-color contrast lens according to claim 1, characterized in that: The raw materials used for preparing the high - definition spectral precision - controlled high - color - contrast lens, by weight parts, include 100 parts of polycarbonate, 0.85 parts of blue absorption dye, 1.05 parts of vanadium complex of heterocyclic compound, and 0.3 parts of phthalocyanine organic dye.

7. The preparation method of a high-definition spectral precision-controlled high-color contrast lens according to claim 1, characterized in that: The raw materials used for preparing the high - definition spectral precision - controlled high - color - contrast lens, by weight parts, include 100 parts of polycarbonate, 0.6 parts of blue absorption dye, 0.7 parts of vanadium complex of heterocyclic compound, and 0.6 parts of phthalocyanine organic dye.

8. A high-definition spectral precision control high-color contrast lens, characterized in that: Prepared by the preparation method according to any one of claims 1 to 7, the transmittance of the lens forms high - drop peaks and valleys in the visible light band of 400 - 700nm. Among them, valleys with a transmittance lower than 40% are formed in the bands of 490 - 500nm, 600 - 610nm, and 670 - 680nm at the junction of the three primary colors to filter the stray light generated in these bands. In the remaining main visible light bands, peaks with a transmittance greater than 70% are formed near the central wavelengths of blue, green, and red light, and a high contrast is formed with the valleys.

Images