Gradual change photochromic and electrochromic polarized spectacle lens and production method thereof

Abstract

The invention relates to a gradual change photochromic and electrochromic polarized spectacle lens and a production method thereof. The spectacle lens comprises a photochromic resin lens (1), a gradual change front polarized film (2), a liquid crystal box (3), a gradual change back polarized film (4), and a transparent resin lens (5). The production method of the spectacle lens comprises the following steps: placing the photochromic resin lens, the gradual change front polarized film, the liquid crystal box, the gradual change back polarized film and a resin protection lens in a glass die in sequence; applying UV photosensitive adhesive in the intervals among all layers; tightly clamping with a die and irradiating with ultraviolet light for 10 to 20 minutes; dissembling from the die after photosensitive adhesive is completely solidified, polishing edges; and obtaining finished lens with standard optical parameters, no impairment and no bubbles after examination. By adopting the invention, the lens has the double functions of sheltering from sunshine in day time and sheltering from glaring light at night. The transmittance of the lens is larger than or equal to 95%. The transmittance raises from 20% to 80% gradually from top to bottom on the film surface.

Description

technical field [0001] The invention relates to the technical field of spectacle lens manufacturing, in particular to a progressive photochromic and electrochromic polarized spectacle lens. Background technique [0002] In the existing manufacturing industry of polarized spectacle lenses, without exception, polarized films with the same overall color depth are used to produce spectacle lenses. This is because the purpose of polarized spectacle glasses is only to block strong direct sunlight However, at night, the traditional polarized lenses with the same overall color depth are too low in light transmittance, generally only 20-40%, and cannot be used by drivers to block the glare of oncoming vehicles. , while not affecting the clear observation of the road ahead, so that the wearer can only give up the use of traditional polarized glasses at night. [0003] Chinese patent ZL200520047480.3 discloses a technical solution of a resin photochromic lens with anti-dazzling night ...

AI Technical Summary

Problems solved by technology

[0002] In the existing manufacturing industry of polarized spectacle lenses, without exception, polarized films with the same overall color depth are used to produce spectacle lenses. This is because the purpose of polarized spectacle glasses is only to block strong direct sunlight However, at night, the traditional polarized lenses with the same overall color depth are too low in light transmittance, generally only 20-40%, and cannot be used by drivers to block the glare of oncoming vehicles. , while not affecting the clear observation of the road ahead, so that the wearer can only give up the use of traditional polarized glasses at night

[0003] Chinese patent ZL200520047480.3 discloses a technical solution of a resin photochromic lens with anti-dazzling night vision. The anti-dazzling method that takes into account passing cars at night is to add a layer of selective light reduction film on the surface of the resin photochromic lens. , this method is fixed to the light blocking degree of the incident light, and cannot change its own light blocking degree following the change of the incident light intensity to meet the user's requirements

In addition, Chinese patents 1263328.3, 200620116281.8, the manufacturing method of polarizing lenses, and the polarizing technology involved in the published patent documents are all just mentioned to solve the single function of the polarizer to block the sun, and can block the sun during the day and can see clearly at night. Gradient photochromic and electrochromic polarizing glasses that block strong lights while on the road have not seen related reports and products

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