Researchers have combined theory and practice in a step-by-step method that eliminates much of the guesswork of using freeform lenses. Lenses and mirrors with freeform surfaces enable designers to ...

The technical definition of a telephoto lens is one with a focal length greater (or longer) than 50mm (on the 35mm/full frame forma), but the telephoto range is more generally accepted to begin at ...

LEWISVILLE, Texas, July 16, 2025 /PRNewswire/ -- Ophthalmic lens technology leader HOYA Vision Care announced today the launch of HOYA Polarized Lenses with Lumacore™ Mirrors. The patented technology ...

Kenko has announced the second version of its 400mm f/8 telephoto mirror lens. The new version features optical tweaks to improve image quality, compared to the previous model (which came out in July ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. 2020 was supposed to be the year of vision, which we ...