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1.56 Semi Finished Blue Cut Bifocal Photo grey optical lenses

1.56 Semi Finished Blue Cut Bifocal Photo grey optical lenses Featured Image
  • 1.56 Semi Finished Blue Cut Bifocal Photo grey optical lenses
  • 1.56 Semi Finished Blue Cut Bifocal Photo grey optical lenses
  • 1.56 Semi Finished Blue Cut Bifocal Photo grey optical lenses

Short Description:

Under the sunlight, the color of the lens becomes darker and the light transmittance decreases when it is irradiated by ultraviolet and short-wave visible light. In the indoor or dark lens light transmittance increases, fade back to bright. The photochromism of lenses is automatic and reversible. Color-changing glasses can adjust the transmittance through the lens color change, so that the human eye can adapt to the changes of environmental light, reduce visual fatigue, and protect the eyes.


Product Detail

Product Tags

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Production Details

Place of Origin:

Jiangsu

Brand Name:

BORIS

Model Number:

Photochromic lens

Lenses Material:

SR-55

Vision Effect:

Bifocal lens

Coating Film:

UC/HC/HMC/SHMC

Lenses Color:

White(indoor)

Coating Color:

Green/Blue

Index:

1.56

Specific Gravity:

1.28

Certification:

CE/ISO9001

Abbe Value:

38

Diameter:

75/70mm

Design:

Crossbows and others
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Blue light is harmful to eyes mainly in myopia, cataract, and macular disease.

1, harmful band of blue light energy can penetrate the lens directly to the retina, causing retinal pigment epithelial cell atrophy and even death, cell death will lead to visual decline, and this damage is irreversible!

2. Due to the short wavelength of blue light, the focus of blue light in the glasses will be before the retina. In order to see clearly, the eyeball must be in a state of tension.

3. Blue light can inhibit the secretion of melatonin, which is an important hormone affecting sleep. This is also the reason why playing mobile phone or computer before bed can cause poor sleep quality or insomnia.

Production Introduction

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Informally single focus lenses, that is only one optical center of the lens, then the corresponding single lens piece is double lens, the double light piece is to focus on a pair of glasses, there are two, the first half of the lens is usually normal prescription lenses, used to see in the distance, and the lower part is added a certain degree, the lens to look at nearby.

Product Process

Production Process

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