Meizu MX2 was officially released on the evening of the 27th. This product is equipped with an 8 million pixel back lit camera, and has 1080P full HD camera capability, which has greatly improved the performance compared with the previous generation. According to the official introduction, this camera is mainly built for image quality. It uses the best BSI sensor, plus an independent image processing chip. It also has five optical lenses and a blue glass filter with four layers of coating. This blue glass filter has little contact with the previous products. What is the beauty of it? Here we might as well introduce it.

What is the beauty of the blue glass filter of Meizu MX2 rear lens?

First, learn about blue glass. Blue glass is very common in optical applications. It is a kind of optical filter. Those who are familiar with photography should know more about it. Blue glass filter is mainly used to eliminate infrared light and trim the incoming light. Because the blue wavelength has a high transmittance, it has better penetrability than the red orange glass filter, and can block the light whose spectrum falls at 640~650nm. It can be used in optical instruments or detection instruments that need to correct the color, or represent blue and need low reflection, such as video lens filters, automatic optical detection, optical instruments, detection instruments, etc.

Blue glass filter (picture)

In addition to some professional equipment, blue glass is also widely used in consumer products. In addition to Meizu MX2, Apple has already used this technology. For example, the rear camera of iPhone 4S and iPhone 5 uses blue glass material to correct the color deviation generated in the process of taking pictures. With the rapid development of the smart phone and tablet computer markets, the demand of the global optical filter market is also gradually increasing, which is increasingly used in consumer products, but users generally do not care too much.

Blue glass filter technology is also used in iPhone 5

Of course, filters also have their disadvantages, that is, no filter can make the imaging of celestial bodies brighter, because all filters will absorb certain wavelengths, making objects darker. But generally speaking, this kind of influence is small and can be ignored. On the contrary, the advantages brought by blue glass are more obvious.

In addition, the coating on the surface of the blue glass filter also has a certain role: first, it increases the light transmittance of the lens. The raw material for making the lens is glass. Although the glass is transparent, it also has a light blocking effect. The experiment shows that each piece of glass is light blocking 8%, and the lens is composed of multiple pieces of glass. A layer of film (oxide pick) can greatly improve the light transmittance and reduce the light transmission loss; Secondly, it can prevent stray light from interfering with the image and improve the image definition.

Now let's take a look at the official photo samples of Meizu:

About the author