What does numerical aperture actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

The numerical aperture of a spherical lens, abbreviated NA, can be calculated from the effective focal length and thediameter of the input source. For collimated incident light, when the refractive ...

We saw much more detail last week into European research consortium (they are here) IMEC’s 32 nm platform. One of the most revealing looks was into the tangle of decisions surrounding lithography for ...

A paper titled "Three-dimensional large-aperture lens antennas with gradient refractive index," published in SCIENCE CHINA Information Sciences, 2013, No. 12, investigates the principles and ...