Esco Optics has been producing top quality catalog optics and custom precision optical components for 65 years. ITAR registered, US based manufacturing in ...

Jan 16, 2016 — What does an ND filter do? A neutral density (ND) filter is a type of dark filter that easily attaches to the front of a camera lens, to ...

What we refer to as the Fresnel Zone is actually an infinite series of zones between the two antennas. The innermost one is circular in cross section; the rest ...

Dec 7, 2021 — The ribbed side of the fresnel always goes against the ground glass. A fresnel is a lens and as such the ground glass has to be moved back the ...

Starting in 1963, HOYA introduced the first anti-reflective coating coating for mineral lenses to the market. 60 years of coating evolution has led us to ...

The second edition of Theory and Practice of Optics and Refraction has been thoroughly revised and updated keeping in mind the tremendous advances which ...

2023717 — What is the field of view? Field of view refers to the area that your camera lens can capture in a scene or object. It's like the camera's ...

Dec 31, 2022 — Inexpensively made Fresnel lenses make poorer quality images than traditional glass lenses because of a problem called spherical aberration: ...

Oct 4, 2024 — Physical optics deals primarily with the nature and properties of light itself. Geometrical optics has to do with the principles that govern the ...

Longpass filters are optical filters that reflect short wavelengths while transmitting, or passing, long wavelengths. Conversely, Shortpass filters transmit ...

Here we use cookies (cookies) for the website to work in a good way for you. By continuing to browse, you agree that we use cookies.What are cookies? I understand