Is the Bright Moon Lens 1 60 an aspherical lens

The refractive index of the moon lens.

The lenses are basically aspherical lenses. For example, ultra-tough lenses, PMC lenses, and anti-blue light lenses.

The self-tinting lenses are all aspherical lenses.

The vast majority of lenses in the domestic market are self-proclaimed aspherical lenses, but pay special attention to it! The only authentic aspherical lenses that can be bought are a few brands such as Mingyue lenses.

Aspherical lenses, refers to aspherical lenses with refractive index.

Lens refractive index, the lens slips to the superscript74 refers to the refractive index of the lens, for myopia.

For glasses, the higher the refractive index of the lens, the thinner the edge thickness of the lens, all other parameters being the same.

However, the refractive index of the lens is not the higher the better, in general, the higher the refractive index of the lens, the Abbe number.

The lower it is, the more dispersion.

The more obvious. With the upgrading of lens material technology, this law is gradually being broken, such as refractive index lenses, which have a refractive index higher than67, but the Abbe number is higher than that of refractive index lenses and most refractive index lenses.

Material Classification:

Common lenses on the market are roughly divided into glass sheets, resin sheets, PC lenses, etc. according to the material.

Among them, glass has a strong ability to refract light, so the refractive index of glass lenses can also be achieved90。However, due to the fragile nature of glass lenses and the heavy material, they are generally only used for ultra-high myopiaGlass lenses are only selected for 90 refractive index lenses.

Due to impact resistance.

Strong, unfragile, and good light refraction ability, plastic lenses have attracted more and more attention and have now become the mainstream of the market.

With the development of the glasses market, consumers' awareness of plastic lenses continues to improve, and at the same time, higher requirements are put forward for the performance and function of products, which makes the sales of low refractive index lenses gradually decline, and lenses with high refractive index and excellent performance have attracted much attention from consumers.

In the past few years, there are very few manufacturers in the domestic market that independently develop and research high refractive index lenses, and high refractive index products are almost all imported, which is not only the most expensive, but also its quality and performance can not meet the requirements of consumer fuel concessions.

In recent years, some domestic manufacturers have built their own lens raw material factories, intervened in the research and development of lens raw materials, and independently developed a series of high refractive index lenses, including daily universal lenses, ultra-bright lenses, and anti-blue light lenses.

Smart self-tinting lenses.

Multi-effect protective lenses and progressive multi-focal lenses to meet the diversified needs of consumers.

Similarities and differences between the series of bright moon lenses:

1. Lenses, focusing on high refractive index and high Abbe number.

2. KR super tough lenses, which are not fragile and safer.

3. PMC ultra-bright lenses, focusing on high light transmittance, clearer, and light transmittance of more than 98%.

4. Anti-blue light lens, focusing on film reflection + substrate absorption double-effect anti-blue light technology.

5. Intelligent color-changing lenses, intelligent color-changing according to light and ultraviolet rays, to protect the eyes.

6. Progressive multifocal lenses, which are developed for students, white-collar workers, and middle-aged and elderly people, such as student reading and writing lenses, anti-fatigue lenses, and Weishi multifocal lenses, to solve the needs of users to switch between near, medium and far.

Bright Moon lens maintenance method:

1. When touching the eyes, do not touch the lenses with your hands, as they will leave fingerprints and stain the lenses, and the lenses will be worn after a long time.

2. If the lenses are dirty, do not wipe them with clothes or hard paper. After the lens is blurred by water vapor, wipe it with a soft paper towel, preferably with a cloth that is specially used to wipe the glasses.

3. When wiping the lenses, everyone should pay attention to wipe them in one direction to avoid rubbing back and forth to easily damage the lenses. When sleeping, the lenses should be wrapped in a glasses cloth and placed in the glasses case to avoid dust.

4. The cloth for wiping glasses should also be cleaned from time to time, and it can be washed and dried with soap or laundry detergent and placed in the box.

5. Glasses can not be wiped alone, they can be washed once a week or half a month, and finally cleaned with dish soap, which can block the sight with waterproof steam.

6. The cleaning method is: first rinse the dust on the mirror with water, then use neutral soap or detergent to clean, and finally rinse it with water and dry it with a glasses cloth.

It is the refractive index, which is an ultra-thin lens, and the moon lens is characterized by a 16-layer coating with a power error of less than 3 degrees.

Summary. The edge thickness of the moon lens lens ratio is thinner, and blue light protection and thinness can also be taken into account, which greatly helps to upgrade the wearing experience.

The edge thickness of the moon lens lens ratio is thinner, and blue light protection and thinness can also be taken into account, which greatly helps to upgrade the wearing experience.

Pit. Dear, the lenses of the same brand are not obvious to the naked eye, and if the lenses of the bright moon are compared with ordinary ones, then it is very easy.

It can be dissipated to see the same 600-degree refractive index and refractive index lens together, and it has to be said that the lens is thinner than nearly a 1 yuan coin.

The same calendar roll is 600 degrees, the refractive index limb is like the edge of the remaining lens thickness is, the refractive index lens is mm, the specific thickness.

Bright Moon Lenses and the Difference Between Myopia 650 Degrees How much is the difference between the Bright Moon Lenses and the thickness.

It is slightly thinner, and the span of thickness and thickness is larger, and the feature is that the number of Abbe is higher than that of, that is, the imaging quality will be better, and the cost-effective one will be selected if you want to save money. Thickness: For those who are highly myopic or pursue thinness, there is no other special way to control the frame size of the high refractive index lenses except for slipping and base sheds, and then you think about your power there, you can't call the plate with the flat light, so the thinness is relative, and you can make a balance between what you can accept and what you can achieve in reality.