Daughter of Different Eyes

Chapter 28 Autofocus
By the way, it is the eyes that Guan Zhiyi is showing at this moment, which is very special. No wonder Qicai felt a little strange during the break just now.

This Guan Zhiyi's eyes will discharge when watching people, especially when watching Wu Xieli's lectures, she is full of electricity. It is clear that she wants to shock this handsome mature man so that the outside is burnt and the inside is tender, and then eat it in one bite.

On the podium, Wu Dawei held two round lenses in his hand and said to everyone:
"This is the original shape of the spectacle lens before it is processed into the frame. As you can see, it is round... Lenses can be basically divided into the following types according to the material they are made of:

The first one is made of glass, which is characterized by high light transmittance and relatively wear-resistant surface. The disadvantage is that it is relatively heavy and easy to break... The second is the lighter resin lens in your hand. The advantage is that it is lighter. It is light and not easy to break, but it also has disadvantages. Compared with glass lenses, its light transmittance is only 95%. If the surface is not used properly, it is easy to scratch.

However, modern lens processing technology is becoming more and more mature today. Most of the resin lenses have been hardened, and various coating technologies are used on the surface, which makes the resin lenses have higher light transmittance and more wear resistance, making the lenses more durable. Block ultraviolet rays, and even have the effect of blocking various electromagnetic radiation. "

Wu Xieli passed the lenses in his hands to the students, allowing them to experience the appearance and feel of lenses made of two different materials.

"In addition to these two materials, the lens also has some special materials. These special materials, such as crystal stone, are also made of polycarbonate material called PC space film, which is called "unbreakable" in the industry. Spectacle lenses have become popular in the market in recent years, and the light-transmitting panels of some bulletproof windows are made of this material."

When the students took turns to pass the spectacle lenses, Wu Xieli walked around and talked about it.

Sitting at the table in front of Qicai was a young boy named Shao Zhijie. The unique beauty of southerners could be seen clearly on his face. When he turned around and passed the lens to Qicai, Qicai read that he had a brief Short-circuited, afraid to look at the colorful colors, shy and abnormal, and the back of the ear is obviously red, which caused his delivery movement to be a little deformed.

Before Qicai could hold the lens, he nervously let go of it ahead of time, and one of the lenses fell to the ground!

Pop!

Qicai yelled secretly, ah, this is going to be bad!
Wu Xieli, who was walking here, bent down to pick up the undamaged lens, handed it to Qicai, and said with a smile:
"You see, this is the advantage of resin lenses, also known as safety lenses. They are not easy to break. If the glass lens fell on the floor just now, it would be broken all over the floor."

Ah, by accident, this handsome Wu Xieli turned it into a good random explanation, not bad!
Qicai flipped through the glasses lens in her hand, put it in front of her face, squinted one eye, looked through the lens for a while, her vision blurred for a while, and then became clear again in an instant like the focus of a camera.

Qicai felt strange, and picked up the lens of another glass. It was a presbyopic (hyperopic) convex lens with a thick center and thin edges. Qicai also placed it in front of the eyes.

what!
How can it be seen clearly?
Qicai discovers that her pupils can focus automatically!This is a function extended by Qicai's own mind-reading ability discovered by her. If she controls it well, wouldn't her eyes be directly used as telescopes and microscopes?
At the beginning, the auto focus was not very flexible in adjusting the colorful colors. She watched the words on the whiteboard fluctuate from big to small. The three words Wu Dawei left by Wu Xieli on it were sometimes close in front of her eyes, and each word was as big as a washbasin. , even the writing traces of the whiteboard pen are so obvious, and sometimes these three characters are as small as soybeans, but they are also very clear.

This was all observed by Qicai with the naked eye, but Qicai suspended further experiments and passed the lens to the back row.

Qicai's eyesight has always been very good. This is something she takes for granted. It is normal for her to see clearly from far and near. After passing the inspection of prescription lenses today, she discovered that this is also true. A special ability, automatic focus, seems to be able to zoom in on distant objects and zoom in on nearby objects. This is an amazing auxiliary ability.

I didn't notice that Yitong still has many abilities that I haven't discovered by myself, but this is already a very magical thing for Qicai. Yitong can read people's minds, and can control others when he is emotional. I express myself in words, and now I have discovered the function of eye pupil auto-focus
After introducing several kinds of lens materials, Wu Xieli explained the materials of the frames.

Only then did Qicai discover that a pair of glasses still contains so much knowledge. In the past, glasses frames were made of ox horn and tortoise shell (a kind of turtle) shell. The finished tortoise shell is still a very expensive and high-end product.

Qicai remembered the spectacle frames worn by some important people in the TV news, the kind of spectacle frames with tortoise shell pattern should be made of tortoise shell material.

The original bulky metal frames are now more and more evolving into lightweight alloy frames.The full-frame frame also adds more choices of half-frame, frameless and other styles.

In addition, there is another important frame material, which is the colorful plastic frame, which is divided into sheet material and injection molding frame, which further links glasses with fashion.It is precisely because of this kind of brightly colored plastic frame that glasses not only meet the needs of vision correction, but also become the darling of the fashion industry.

Only then did Qicai remember that Zhang Jie had a spectacle frame, but without lenses, it was purely for decoration. Zhang Jie also said that it was her sharp weapon for pretending to be cute, the ultimate weapon, so powerful!

Then Qicai remembered Susu's anti-sickness weapon, she would always wear those dark gray sunglasses for a few days every month!
It turns out that there are so many potential customer groups around me.

Qicai started to dream again, hehe, when I start to take orders for business performance, I must bring the three of them over to have a good meal, and they will start to drive a large number of sisters to be my loyal customers...

"Colorful! Let's talk about the advantages and disadvantages of glass lenses and resin lenses after comparing the two materials."

Wu Xieli suddenly called Qi Cai to stand up and answer questions.

Qicai regained her composure, stood up, and then replied: "Glass lenses are easy to break, but resin lenses are easier to scratch. Under the same prescription, glass lenses are heavier, while resin lenses are lighter... glass lenses are thinner. The skin of the resin lens is thicker!"

Everyone roared with laughter!

Thick skin, thick skin!
Faint food, why did I say one more word?
(Since we are talking about thick skin, please be thicker and ask for all kinds of support from everyone! Thank you Colorful~!)
(End of this chapter)