Principles of AR Coatings

How Do AR (Anti-reflective) Coatings Work? The Problem: No Time for Reflection As light passes through a lens from air, it experiences a change in index of refraction. When that occurs, some of the incident light is transmitted through the lens medium and refracted...

Polarized Lenses

Far More than Eliminating Glare Photographers often use polarized lenses on their cameras to obtain bolder colors and deeper contrast in their photos. In the same way polarized lenses remove the glare and improve the visual quality of a photograph, polarized...

Polarized Colors, Efficiency, and Use

Polarized Colors, Efficiency, and Use - Color Polarizing Efficiency Trans-mission Use Gray C 98% 25% Reduces the maximum amount of visible light and allows for true color recognition. Good for bright sunny days and heavy glare situations. Best uses include driving,...

The Problem with UV 400 Treatments

Have you ever had the chance and check a pair of lenses that were treated with a UV solution some three to six month after the were made and handed to the patient? There is a good chance, that you will have a big surprise, your UV Meter ( if the instrument measures at...

Photochromic Lenses

Photochromic is a generic term to define a lens with a characteristic of changing state from clear to sunglass dark when exposed to light. Over the years this option has been available in many different chemical, material, and color combinations; as well as offered by...

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