1.74 Blue Cut Spin Photochromic Gray HMC Optical lenses

Short Description:

Resin lens is the lens formed by chemical synthesis and polishing with resin as raw materials. Resin lens has obvious advantages, its weight is light, wearing more comfortable; Secondly, the resin lens has strong impact resistance and is not fragile and safer; At the same time, the resin lens also has a good light transmission; In addition, resin lenses are easy to be reprocessed to meet special needs. Finally, coupled with the innovation and improvement of coating process, resin lenses also have good wear resistance, so they have become the mainstream of lenses in the market.

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Product Detail

Product Tags

Production Details

Place of Origin:	Jiangsu	Brand Name:	BORIS
Model Number:	Photochromic Lens	Lenses Material:	SR-55
Vision Effect:	Single Vision	Coating Film:	HC/HMC/SHMC
Lenses Color:	White(indoor)	Coating Color:	Green/Blue
Index:	1.74	Specific Gravity:	1.47
Certification:	CE/ISO9001	Abbe Value:	32
Diameter:	75/70/65mm	Design:	Asperical

What use can the lens have, for example: prevent blue light, control myopia, reduce fatigue and so on, these all belong to the function.
Some functions of the lens can be realized by the membrane layer, such as anti-blue light, anti-glare and so on;
Some can be achieved through the lens surface design, such as fatigue resistance is progressive design, correct strabismus is additional prism, etc.;
Some need to change the properties of the lens substrate to achieve, such as color change, dyeing, impact resistance, etc.
Generally speaking,functional lens, price is higher, must make A choice according to his actual demand so. Select the feature you need. To prevent blue light, don't look at discoloration. Choosing lenses according to their function will not go astray.
In addition, functions can be superimposed, such as anti-blue color progressive lenses, also some.

Production Introduction

The refractive index:
This is one of the most common lens parameters, the refractive index, by definition, is the ability of a lens to bend light.
Under the same conditions, the higher the refractive index, the thinner the lens.
The common refractive index is 1.50 (1.49, 1.51), 1.56 (1.55), 1.61 (1.60, 1.59), 1.67 (1.66), 1.71, 1.74 (1.73). The refractive index of some materials in parentheses will be deviated from the standard refractive index value, which also belongs to the normal category.
All of these are the refractive index of resin lenses (no way, they are all resin lenses now), which gets thinner and thinner in the future, that is to say, 1.67 refractive index lens is thinner than 1.56, and 1.74 is the thinest..