Anti-blue-light resin lens made from fluorescent masking agent

Abstract

An anti-blue-light resin lens made from a fluorescent masking agent is manufactured in the following steps of (1) monometer preparation, (2) pouring, solidification, demoulding and stabilization and (3) hardening and film coating according to percentage by weight. According to the anti-blue-light resin lens, the broadband fluorescent masking agent is added into a lens monometer according to a certain ratio and is evenly dispersed, as a result, 99 percent of ultraviolet light, with wave length ranging from 220 nanometers to 380 nanometers, harmful to the human body can be attenuated through absorption, part of purple light and blue light with wave length ranging from 400 nanometers to 480 nanometers is attenuated through absorption in a relatively linear mode at the same time, in this way, original anti-blue-light capacity of a lens is remarkably improved on the premise that high light transmittance of the lens is guaranteed, and the blue light attenuation rate is increased to over 40 percent from originally 10-20 percent after film coating, linear adjustment of blue light frequency attenuation is realized, and the anti-blue-light resin lens has the advantages of being advanced in technology, simple in process, high in practicability and capable of selectively adjusting the blue light frequency attenuation rate.

Description

technical field [0001] The invention relates to the technical field of production and application of anti-blue light resin lenses, in particular to an anti-blue light resin lens produced by using a fluorescent masking agent. Background technique [0002] Scientific research has proved that blue light with a wavelength of 400-480nm is potentially harmful to people's eyes due to its short wavelength and high energy. Blue light can directly penetrate the crystal and reach the retina of the fundus, causing eye discomfort, visual fatigue, and retinal pigmentation The decline of epithelial cells, long-term exposure to high-intensity blue light will cause retinal macular degeneration, resulting in blurred vision and decreased vision. In view of the damage caused by blue light to people's eyes has been medically confirmed and confirmed, it has gradually aroused medical attention. The industry and the glasses manufacturing industry have attached great importance to it, and various le...

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Problems solved by technology

[0002] Scientific research has proved that blue light with a wavelength of 400-480nm is potentially harmful to people's eyes due to its short wavelength and high energy. Blue light can directly penetrate the crystal and reach the retina of the fundus, causing eye discomfort, visual fatigue, and retinal pigmentation The decline of epithelial cells, long-term exposure to high-intensity blue light will cause retinal macular degeneration, resulting in blurred vision and decreased vision. In view of the damage caused by blue light to people's eyes has been medically confirmed and confirmed, it has gradually aroused medical attention. The industry and the glasses manufacturing industry have attached great importance to it, and various lens products that reduce and prevent blue light from passing through have emerged; The blue light absorber (olp melanin powder) is used to absorb and scatter blue light energy, reducing the passage of blue light. It is reported that when the amount of olp melanin powder added is 600-800ppm, the finished product can block more than 90% of blue light , but olp melanin powder is a broad-spectrum light-absorbing material. Its advantage is that the shielding coefficient for high-frequency short-wave light such as purple light and blue light is greater than the attenuation shielding coefficient for low-frequency light waves, but it has no window absorption frequency itself, so it cannot be realized. The rectangular attenuation characteristic curve of blue light, while attenuating blue light, also reduces the passage of other frequency colored light, reducing the overall light transmittance of the lens

[0003] Chinese patent 201320761157.7 anti-blue light lens increases the vacuum evaporation In2o3 film layer and Ti2o3 film layer on the substrate, and cooperates with the overlapping filtering effect of other evaporation film layers, so that the blue light attenuation rate reaches more than 40%, effectively filtering the blue light radiation; China Patent 201320664107.7 is a coated anti-blue light resin lens, which also has the effect of attenuating blue light by vacuum-depositing films with different refractive indices on the surface of the substrate, but the technical solutions of the above two patent documents follow the technology of superimposed attenuation route, it is impossible to form a window regulation for the strong and targeted attenuation and shielding effect of blue light. At the same time, the multi-layer evaporated film layer also causes a relative increase in production costs.

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