1.56 Blue Cut Bifocal Flat Top Photochromic Gray HMC Optical lenses
Production Details
Place of Origin: |
Jiangsu |
Brand Name: |
BORIS |
Model Number: |
Photochromic Lens |
Lenses Material: |
SR-55 |
Vision Effect: |
Bifocal |
Coating Film: |
HC/HMC/SHMC |
Lenses Color: |
White(indoor) |
Coating Color: |
Green/Blue |
Index: |
1.56 |
Specific Gravity: |
1.28 |
Certification: |
CE/ISO9001 |
Abbe Value: |
35 |
Diameter: |
70/28mm |
Design: |
Asperical |
What kind of lens do old people choose?
After the elderly determine the diopter, you can choose bifocal lens, the advantage is that a pair of glasses can choose to see the distant scene or see the near object, which can reduce the trouble of taking off and wearing two pairs of glasses. If available, progressive multifocal lenses may be considered. Compared with bifocal lenses, progressive multifocal lenses have the following advantages: from far to near without interrupting the line of sight, the middle distance becomes clear; Beautiful appearance, no visible interval; No image jumps.
Blue blocking lenses are not the same color as normal lenses: blue blocking lenses are light blue or yellowish, while normal lenses are clear and colorless.
Production Introduction
The method of identifying anti-blue light glasses
1. Look at the packaging check anti-counterfeiting: the normal brand of anti-blue light glasses lenses have relevant anti-counterfeiting code on the packaging, for users to query, you can check whether the product is normal according to the anti-counterfeiting code.
2. Check the fog display anti-counterfeiting code: the lens itself has a fog display anti-counterfeiting code, which can be displayed by taking a breath on the lens, and the authenticity can be checked by logging in the official website of the lens brand.
3. Blue light pen irradiation: Use the blue light pen to illuminate the lens. For the lens without blue light blocking function, the blue light basically penetrates through the lens, while for the blue light blocking lens, most of the blue light is blocked by the lens.