Adding a rotational hyperbolic mirror after the parabolic one can reduce the F-number and thus the focal spot size significantly. As reported in Advanced Photonics Nexus, this secondary focusing ...

Illustration of the working principle of dynamic z-scanning for auto-focusing. Dynamic beam shaping is achieved by a single TAG lens operating at 140-380kHz in a dual beam path setup (probing beam in ...

There have been important technological advancements made in the nondestructive testing (NDT) industry with total focusing method (TFM) capable inspection devices becoming more common. In terms of ...

IT is a well-known fact that divergent electron beams of uniform velocity can be focused by means of magnetic fields. This focusing device is used, for example, in cathode ray oscillographs. It has ...

Mindfulness is everywhere these days. Hundreds of new books have been written about it. Major corporations offer programs on it to their employees. Top-tier universities, like Harvard, Brown, Oxford, ...

I'm not talking about speed in regards to aperture, but rather the ability to focus quickly on things like moving subjects. Sure, it's party due to the camera motor (in this case, a D1x) but are some ...

Flow cytometry is a technique that is used to detect and measure the chemical and physical characteristics of a cell population. This technique, which was first used in the 1950s, can also be used to ...