Let's follow the football photographers of Russia, visit Russia to dedicate high-altitude sights.

Here is highly confidential, not allowing ordinary people to enter, let alone take pictures. We will witness the complete sight production line.

This factory was surrounded by military highways. When the guard saw Aslant's camera, even to reject him, he had a special pass.

This is a glass cube that will be cut into a lens and constitute the core portion of the sight.

Some such optical glass blanks are imported from China. According to engineers, China's previous optical glass is very poor, but it is getting better now.

Aslax, why do you have imported Chinese glass? The engineer said that this glass is manufactured in Russia, the price is three times the price. The figure is a high-intensity special optical glass manufactured by Russia.

They must first cut glass cubes into thick sheets.

However, usually China's partners will process optical glass into semi-finished products and then send them to them.

These polishing machines have been 40 years old and work very well.

It is women who work here because of small work intensity, and this work needs to be careful.

This is the future sight lens.

It is now placed in the inside of the polishing machine.

It is about to start grinding.

This tool will polish the glass blank.

While polishing, special liquids need to be added to keep it moist.

Engineers are demonstrating the principle of polishing.

Tools used to measure the curvature of the lens.

If the curvature of the lens is not enough, the grinding will be grind.

Grind the various tools for different models of lenses.

Aslan says these lens blanks seem like attractive candies.

This machine is used to cut huge glass cubes.

Worker showing a sawing plate.

Cut glass blank.

This is just the first step in production.

This is a manual polishing machine.

Just cutting the blanks must perform manual polishing.

Handmade grinding needs to rely on workers' experience.

Waiting for polishing lens blank.

The polished machine is being polished.

The lens contrast before and after polishing.

This machine is used to handle the glass thickness just cut.

Each glass lens needs to be pasted before the deep grinding.

The preliminary polishing lens blank will be made next step.

The lens limiter has been applied to high temperature resin.

Then insert it into another tool, press firm and stick the tool.

Put in cold water.

Remove the first spherical tool.

These lenses are fixed to the polishing tool, very interesting.

Sometimes, I have to hammer ...

There are many such tools on the equipment frame.

Aslan said, here is the most impressive.

Various lense blanks waiting for polishing are fixed to the tool.

There are many polishing machines here.

The lens blank will carry out further polishing.

Put the lens blank fixed in the spherical tool into the polishing machine.

This time you can polish a lot of lenses, which usually takes one to four hours.

There are various tools and machine equipment in the polishing workshop.

Just for a purpose - polished lens.

Polish all kinds of glass blanks into qualified lenses.

The large diameter lens is being polished here.

Different polishing machines complete the processing of different specification lenses.

Use diamond powder to polish the lens.

This step is quite key.

This polishing machine is produced in 1958.

However, it has also been further improved by technology improvement.

After polishing the lens, the surface layer will be plated with a film and looks sparkling.

Coated workbench.

The lens after the coating.

Many devices have been upgraded.

The lens looks gains and brighter.

If you want to remove these lenses, you need to enter the tool into the electric oven for bake.

High temperature baking can melt the resin adhesive.

Excend excess resins with a razor.

Fine machining is to enter the next step.

Remove resins and other residues with acetone.

Finally finished lens.

Perform measurement and test is qualified.

The lady is responsible for examining the quality of the lens.

The testing tool is very accurate.

It seems that this eyeglasses have subtle defects or scratches.

This device will polish the edge of the lens to cause its optical center with the geometry center.

Complete the polished eyeglasses.

This is a very old machine, but it has been upgraded and connected to a computer.

Pack the eyeglasses.

Grinding the edge of the lens.

Then check again.

This lens is basically in line with the installation requirements.