By the way, it is the kind of eyes that Guan Zhiyi revealed at this moment, which is very special, no wonder it made Qicai feel a little strange during the recess just now.

This Guan Zhiyi's eyes will discharge when she looks at people, especially now when she watches Assistant Manager Wu's lectures, she is full of electricity, and she is obviously going to electrify this handsome mature man to the outside and tender inside, and then eat it in one bite.

On the podium, Wu Dawei held two round lenses in his hands and said to everyone:

"That's the original shape of the spectacle lens that hasn't been processed into the inside of the frame, and as you can see, it's round...... Lenses can be divided into the following types according to the material they are made of:

The first is made of glass, which is characterized by high light transmittance and wear-resistant surface, while the disadvantage is that it is heavier and easy to break...... The second is the relatively light resin lens on the hand, the advantage is that it is lighter and not easy to break, but it also has disadvantages, compared to the glass lens, its light transmittance is only 95%, and the surface is easy to wear if it is not used properly.

However, today, modern lens processing technology is becoming more and more mature, most of the plastic lenses have been hardened, and various coating technologies are used on the surface, which makes the plastic lenses more transparent and wear-resistant, so that the lenses have the effect of blocking ultraviolet rays and even blocking various electromagnetic radiation. ”

Assistant Wu passed on the lenses on his hands to the students, so that everyone could feel the appearance and feel of the lenses of two different materials.

"In addition to these two materials, of course, there are some special materials, these special materials, such as crystal, and a kind of polycarbonate material referred to as PC space film, which is jokingly called unbreakable spectacle lens in the industry, has also become popular in the market in recent years, and some bulletproof window light transmission panels are made of this material."

When the students took turns to check the spectacle lenses, Assistant Wu talked eloquently while pacing.

Sitting at the table in front of Qicai is a little boy, named Shao Zhijie, the kind of beauty unique to southerners can be seen on his face at a glance, when he turned around to pass the lens to Qicai, Qicai read that he had a short short circuit, did not dare to look at Qicai, shyly and very abnormal, and the back of the ear root was clearly red, which led to his passing action a little deformed.

Before Colorful could hold the lens, he nervously let go early, so one of the lenses fell to the ground!

Smack!

Colorful secretly shouted, ah, this is going to be terrible!

Wu Xieli, who was pacing here, bent down to pick up the intact lens, handed it to Qicai's hand, and said with a smile:

"You see, this is the advantage of plastic lenses, also known as safety lenses, it is not easy to break, if it is a glass lens that has just fallen to the floor, it will be shattered."

Ahh

Qicai looked at the glasses lens in his hand, put it in front of him, squinted his eyes, looked through the lens for a while, his vision blurred for a while, and then instantly became clear like the focus of the camera.

Qicai felt strange, and picked up the lens of the other glass, which was a presbyopia (farsighted) convex lens with a thick center and thin edges, and Qicai also put it in front of the eye.

Hey!

How can I see it clearly?

Colorful found that her pupils could autofocus! This is a function extended of the ability to read minds discovered by Colorful Colors.,If it's well controlled.,Wouldn't your eyes be directly used as a telescope and microscope?

At the beginning of the autofocus, the colorful adjustment was not particularly flexible, she looked at the words on the whiteboard flickering big and small, the three words left by Wu Xieli Wu Dawei, sometimes close in front of her eyes, each word basin is so big, even the writing traces of the whiteboard marker are so obvious, and sometimes these three words are as small as soybeans, but they are also very clear.

This is all observed by Qicai with the naked eye, but Qicai pauses for further realization, and passes the lenses to the back row.

Colorful eyesight has always been very good, this is something she takes for granted, seeing far and near is very clear, it is a very normal thing for her, in today's inspection of the lens with a degree, she found that this is also a special ability, autofocus, as if the distant scene can be zoomed in, and the near object can be magnified, which is a very amazing auxiliary ability.

I didn't pay attention to whether the different pupils still have a lot of abilities that have not been discovered by themselves.,But this is already a very magical thing for Qicai.,The different pupil reads people's minds.,When you're excited, you can also control others.,Express what he thinks about himself in words.,Now I've discovered the function of pupil autofocus.

After introducing the materials of several lenses, Assistant Wu explained the materials of the frames.

Qicai found out that a pair of glasses still contains so much knowledge, and there were even cow horns and tortoiseshell (a kind of turtle) shell to make zuò glasses frames, and the tortoiseshell finished product is still a very expensive high-end product.

Qicai remembered the glasses frames worn by some important people on the TV news, the kind of glasses frames with turtle shell patterns, which should be made of tortoiseshell material.

Metal frames that used to be bulky are now increasingly evolving into lightweight alloy frames. Full-rim frames also add more options for half-rim, bezel-less, and more.

Another important material for the frame is the colourful plastic frame, which is divided into sheet and injection molded frames, which further associate eyewear with fashion. It is precisely with this brightly colored plastic frame that glasses are becoming more and more not only to meet the needs of vision correction, but also to become the darling of the fashion industry.

Qicai only remembered that Zhang Jie had a glasses frame, but there were no lenses, it was purely for decoration, Zhang Jie also said that it was her tender and cute weapon, the ultimate weapon, so powerful!

Then Qicai remembered Su Su's anti-fainting weapon again, and she always had to wear the pair of dark gray lens sunglasses for a few days every month!

It turns out that there are so many potential customers around me.

Colorful began to think about it again, hehe, when I start to take orders to do performance, I must pull the three of them over to have a good consumption, and they will start to drive a large number of sisters to be their loyal customers......

"Colorful! Let's talk about the advantages and disadvantages of glass lenses and plastic lenses. ”

Assistant Wu suddenly called Qicai to stand up and answer the question.

Qicai took his mind, stood up, and then replied: "The glass lens is easy to break, while the resin lens is easier to grind, under the same power, the glass lens is heavier, and the resin is lighter...... The glass lens is thinner, and the plastic lens skin is thicker! ”

Everyone laughed!

Thicker skin, thicker skin!

Sickness, why did I say one more pizzy?

(Since it is said that the skin is thicker, then the skin is thicker and asks for all kinds of support from everyone!) Colorful thank you~! ）