Resin lens having infrared-resisting function and preparation method thereof

Abstract

The invention discloses a protective lens and a preparation method thereof and provides a resin lens having an infrared-resisting function and a preparation method thereof. An optic film layer which has high reflection to close-infrared and antireflection to the visible lights is plated on a concave side of a substrate of the resin lens, wherein the optic film layer is formed by stacking a material film with a low refractive index and another material film with a high refractive index. At least five layers of visible light antireflection films are plated on a convex side of the substrate. The resin lens having an infrared-resisting function of the invention majorly utilizes the interference principle of optic film. The resin lens having an infrared-resisting function made from the optical filters can efficiently prevent the natural light or the close-infrared band in environmental light from entering into the eyes, can be used under the condition of insufficient illumination or night due to the high transmissivity of the visible light, and will not influence the definition of human eyes.

Description

Technical field: [0001] The invention relates to an optical spectacle lens and a preparation method thereof. Background technique: [0002] The eyeball is mainly composed of the cornea, iris, lens, and retina. The refractive medium of the eye has a strong focusing effect, and the incident light beam is highly converged into a small spot, so that the energy density on the retina is higher than the incident energy density on the cornea. Increased by 104 to 105 times. The retina has no ability to regenerate, so if visual cells die, this part of the eye is permanently impaired. Retinal photoreceptors only need 8 to 10 photons in the blue and green spectrum to produce vision, and its energy is equivalent to 1.4×10 -5 J / cm 2 . Therefore, the eyeball is the most sensitive organ to light radiation, and a low dose of harmful radiation can cause serious damage to the retina, leading to vision loss and even blindness. [0003] Ocular tissue has different transmission, reflection a...

AI Technical Summary

Problems solved by technology

[0011] Sunglasses can provide a certain degree of infrared protection for the eyes, but their transmittance to visible light is usually below 30%, and they can only be used outdoors on sunny days. They cannot be worn in low light or night environments, especially when entering and exiting tunnels on highways It is very dangerous to wear sunglasses on the road

[0012] At present, there is no infrared protective lens on the market that can provide the same high transmittance as ordinary myopia lenses in the visible light band, and can effectively prevent near-infrared light from entering the eyes. It can be used by ordinary people daily.

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