Advanced Ray Tracing
Position of Wear Calculation Technology


A typical multifocal lens design is made assuming that light comes on the lens axis in the form of parallel lines.


Therefore, the images of the surface analysis of a typical multifocal lens design are as follows.

Astigmatic Power Graph wo sizes.jpg

However, considering what the eye actually sees, it is obvious that light comes from different angles.

Light Beam.jpg

And in the real usage, the visual areas of a multifocal lens will be as follows.

Oblique Astigmatism.jpg

Advanced Ray Tracing technology substantially increases the real usage performance of the lenses. This is because the optical deviation that occurs on the looks outside the optical center is almost eliminated thanks to this technology.

With this Advanced Ray Tracing technology, the refractions of the lights that pass through the lenses at thousands of different points including the cross looks are calculated by advanced programs and, the multifocal surface is optimized against oblique errors.

For all eyeglasses, the eye looks through the eyeglasses at different angles to see the objects around.

Angle Of Sight.jpg

The points used in analysis of Advanced Ray Tracing design are as below.


The structure of a typical multifocal lens optimized using the Advanced Ray Tracing technology is as follows.

Oblique Astigmatism-1.png

Advantages of Advanced Ray Tracing Technology

  • More quality optical performance for all prescriptions.

  • Wider visibility for the longsighted users.

  • Distance acuity with developed vision quality for the nearsighted users.

  • Advanced vision quality at far, medium and near sights.

Advantages of Advanced Ray Tracing Technology in Astigmatism

Surface Design_Eng.jpg