The Optical Knowledge Portal
Information – Education – Certification

Fields of knowledge

The INFO Portal is free to use and offers comprehensive knowledge on a wide range of topics relating to optics.
Fascinating video tutorials and documentation make complex aspects of the “science of light” easy to understand.
Whether in ophthalmic optics, long-range optics, microscopy, medicine or technology, all videos have been produced by experts in the relevant areas and are thus recognised throughout the industry.
An expert committee regularly evaluates our video content and ensures it is topical.

Profit from our first-hand knowledge and experience! 



Most recent articles. For further information on other topics, go to the navigation menu.

Understanding iris coloboma

Coloboma comes from the Greek word “κολοβωμα” that can be translated as curtailed, mutilated or defect.

read more

Protecting the eyes during outdoor activities

After a long day at work, our eyes welcome the sun when we go outside cycling, hiking or golfing, on…

read more

Types of ophtalmic lenses

According to DIN EN 13666: 2013:10, a single-vision lens “is designed to provide a single dioptric power”.…

read more

Virtual image

Unlike the image created by a video magnifier or bright field magnifier, the virtual image formed by…

read more

Galilean systems

The magnification offered by Galilean systems usually ranges between 1.8x and approx. 2.7x. The field…

read more


Click on the individual topics for more information.