Glass lens presenting colours in the lamplight is coated with various film, such as green film, blue film, purple film and golden film etc.

Lens presenting white is proved to be not coated.

3 times coating was adopted to the glass lens for different purpose:

The outer coating is for preventing dust and oil stain;

The middle coating is anti-reflecting and improving lighting performance;

The inner coating is for preventing scratching.

People wearing glass with these coatings will find vision object bright and clear, and their eyes will get relaxed.

A high-quality coating sometimes is even close to the cost of the lens, that makes the outstanding glasses brands distinguished with the low-quality producers.

So it’s very critical to use high-quality optical tool, the dome sectors, to apply coating for the lens.

ZhongShan JieJun is particularly producing top quality optical tooling.

Below is one of our tooling for your reference:

Dome Segments/Sectors

Product name: Dome Sectors, Calotte segments

Material: Aluminum, Stainless Steel

Radian tolerance: ±1mm,

Runout tolerance: ±0.5mm