Abstract: Experiments and approximate analysis are given for spherical aberration interference rings and for convection distortion arising in the thermal self-defocusing effects produced by laser ...

I've tried and tested many telescopes over the years to ensure you're choosing the right kit for you. These five steals offer superb views of planets, galaxies, nebulas and stars.

Sony has announced the full-frame mirrorless Alpha 1 II and G Master standard zoom FE 28-70mm f/2 lens, both available in ...

Canon's latest patent submission hints at a new lineup of super-telephoto primes that could offer better value without ...

In April, Sigma announced the development of the four prime lenses alongside the 18-50mm F/2.8 DC DN and the 10-18mm F/2.8 DC DN zooms. The 18-50mm F/2.8 DC DN was released in June while the 10-18mm F ...

Sign in / sign up and request update access to the Carl Rowe page.

Sign in / sign up and request update access to the Leanne Powers page.

Evident recently announced the release of its IXplore™ IX85 automated inverted microscope system. With an industry-leading 26 ...

Compared with traditional spherical and aspherical optical surfaces ... Keywords: Basic theory of freeform optics, Design methods of freeform optics, Aberration theory and tolerancing of freeform ...