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15
2022-10
The difference between polarized sunglasses and ordinary sunglasses
The damage of ultraviolet rays to the human body is cumulative, that is to say, the longer the exposure to the sun, the greater the damage of ultraviolet rays. When choosing sunglasses, do not think t...
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10
2022-10
Classification of sunglasses lenses
Classification of sunglasses lenses There is no big difference in the appearance of the lenses, but the safety of lenses made of different materials is worlds apart. At present, the four most co...
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29
2022-09
Precautions when using optical lenses
1. Wear finger cots when using optical lenses. If there are substances such as acid and salt that are easy to corrode the glass surface on your hands, do not touch the optical lenses directly, which w...
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28
2022-09
Identifying true and false polarized sunglasses
The core of the polarized lens is the polarizing film. The polarizing film has a dichroic transparent film, which allows the light in the direction parallel to the transmission ax...
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24
2022-09
Precautions when using optical lenses
1. Wear finger cots when using optical lenses. If there are substances such as acid and salt that are easy to corrode the glass surface on your hands, do not touch the optical lenses directly, which w...
More
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19
2022-09
How to choose sunglasses lenses?
Common visible light contains high-energy ultraviolet rays, and ultraviolet rays can be divided into UVA, UVB, and UVC according to different wavelengths. The ozone layer can isolate most of UVB and U...
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16
2022-09
Processing technology, process and quality inspection of optical lenses
There are very few materials available in the infrared band. Generally, Si, Ge, ZnSe, ZnS and MgF2 are commonly used. Among them, hot-pressed ZnS and MgF2 are generally only used as fairings. Generall...
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13
2022-09
Why did resin lenses replace glass lenses?
Glass lenses are the earliest lenses, but with the development of technology and the improvement of people's material living standards, the status of glass lenses is gradually replaced by resin le...
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