Anti-ultraviolet contact lens

Abstract

An anti-UV contact lens mainly consists of a main substrate and an anti-UV material. The main substrate is hydroxyethylmethacrylate (HEMA), the anti-UV material contains an UV blocker and a photo initiator, wherein, the photo initiator basically consists of 2,4,6-trimethylbenzoyldiphenylphosphine oxide and benzoylformate initiator. The anti-UV contact lens can increase productivity without changing the original process, accelerate curing time of the UV blocker, and reduce defective rate.

Description

technical field [0001] The invention relates to contact lenses, in particular to a contact lens capable of resisting ultraviolet rays. Background technique [0002] By the way, it is known that in the production process of contact lenses, in terms of prescription, colored clothing, color, etc., all can be customized to meet the needs of users, but there are few on the market that can resist ultraviolet rays. Contact lenses, so users who wear contact lenses often need to use sunglasses to resist excessive ultraviolet rays when the sun is strong. In this way, for users who wear contact lenses, it is a burden. Not only does it cost more to buy sunglasses, but it also violates the original intention of wearing contact lenses, which in turn affects the user's ability to wear contact lenses. The will of eyeglasses, here, known contact lenses do have its place that can be improved. [0003] In order to solve the defects of the previous disclosure, it was developed to add ultravio...

AI Technical Summary

Problems solved by technology

[0002] By the way, it is known that in the production process of contact lenses, in terms of prescription, colored clothing, color, etc., all can be customized to meet the needs of users, but there are few on the market that can resist ultraviolet rays. Contact lenses, so users who wear contact lenses often need to use sunglasses to resist excessive ultraviolet rays when the sun is strong

In this way, for users who wear contact lenses, it is a burden. Not only does it cost more to buy sunglasses, but it also violates the original intention of wearing contact lenses, which in turn affects the user's ability to wear contact lenses. The wishes of the glasses, here, the known contact lenses do have their room for improvement

[0003] In order to solve the defects of the previous disclosure, it was developed to add ultraviolet absorbers to the main substrate of soft contact lenses, hydroxyethylmethacrylate (HEMA), to achieve the effect of anti-ultraviolet rays, and according to the needs of users, Add different ingredients or different amounts of UV absorbers to make UV-resistant contact lenses with different grades, but the current curing time in the manufacturing process of such UV-resistant contact lenses is usually longer, and during the curing process, it will There are many uncertain factors that cause the defect rate to be too high, so the production cost of this kind of anti-ultraviolet contact lens is also much higher than that of ordinary contact lenses

[0004] As mentioned above, known contact lenses do have defects in their design structure, to be improved