Option 1Lenses with a refractive index of 74.
On the market: 1There are so many varieties of 74, and the difference is huge!Non-professionals must have expressed a confused expression. But I'm sure you'll know what to do when you're done reading this article. Before the introduction, you must first explain the basic knowledge, 1The raw material for 74, called MR-174, was supplied by Mitsui Chemicals Corporation of Japan.
Since it was developed by it, it enjoys patented technology, and internationally renowned lens manufacturers such as Zeiss, Essilor, Nikon, etc., are its purchasing partners.
First, domestic 174
Among the domestic lens companies, only Shanghai Conant has 174 monomers**. The market share of this brand of lenses is horribly low. Mingyue, Wanxin and other companies currently sell 174 lenses are purchased from other places and then produced. So the conclusion is simple, I don't recommend any domestic brand of 174。
The reason is cruel: small brands of lenses companies do not have stable production174 capacities, while produced 174 quality is also unstable. And the domestic brands in the larger brands sold 174, with the current production technology, is only in the let 174 lenses are the primary stage of qualified delivery. That is, in terms of optical performance, coating design, etc., it is the minimum standard. Also want to 174 can be oil-proofDo dyed sunglasses?Want to change color?Also anti-blue light?Stop dreaming!More importantly, on this most common green film 174 aspherical stock lenses, ** very unpopular, much higher than Korean brands, most domestic brands 174 does not support customization. As for the domestic brands that support customization, the production cycle is particularly long, ** higher, and the cost performance is extremely low.
Second, South Korea 174
Like Kemi, Daming has always been a pioneer in high refractive index lenses, whether it is raw materials, production experience or technical reserves, far better than domestic brands, and we recommend them. I believe you also have a certain understanding of Kemi and Daming, they are Korean brands, as early as more than 10 years ago, the market is indeed very popular South Korean parallel lenses, the packaging is Korean font, it looks particularly alternative, tall. At that time, in the wholesale market (Guangzhou Glasses City), only one or two stalls had this supply, which was very popular.
Later, I casually asked a stall that did a wholesale business of lenses, and it was all in stock. In addition, the packaging is very simple and there is no seal, not to mention consumers, even retailers can't tell the real from the fake. Later, under the introduction of my peers, I learned that if I want to buy **, there is only one safest way - to open an account and purchase in the province, and I have no worries since then. The packaging of the provincial ** is completely different from the Korean parallel goods above. It is conservatively estimated that in the glasses wholesale market, 90% of the smaller retail stores and e-commerce OEM groups are using the above 174 lenses. Even the small lens factory upstream thinks that the production of 174 The cost is too high to give up, then the company must have 174 varieties, the simplest solution is to apply the above-mentioned off-the-shelf lenses to the same.
3. Import 174
Take Essilor, Zeiss, Nikon, TAG Heuer, etc., for example, the 174 is another level in terms of quality and **. We have summarized the law, South Korea 174 such as Kemi, Daming and domestic 174 are all this light aqua blue. 174 will not. So the question arises again, which is better?The latter must be chosen, among the optical properties of the lens, there is one called turbidity, to put it bluntly, the purity is not high, there are no impurities in it, and the lenses have turned blue, what do you think?
If you want to choose the most cost-effective 1 among the international brands74, I would not hesitate to use the Zeiss new Qingrui series. The logic lies in:
1.The ZEISS brand and influence.
2.The new Qingrui series is ZEISS's most enduring series and is designed with scientific curvature.
3.The new Qingrui series of coatings has been upgraded to the highest-end diamond cube platinum film in the ZEISS system.
4.This 1The origin of 74 is Japan, and Essilor and Nikon are from the Philippines (even if the raw materials are the same, I prefer that the quality of Japanese production will be higher).
Compared with Essilor, you can find a fresh and sharp one. 67 retail price, much higher than Essilor. But fresh and sharp 174 is lower than Essilor!This alone can be bought directly!