Optics Valley Technical Series Webinar: A New Method of Optical Alignment Using Bessel Beams скачать в хорошем качестве

Optics Valley Technical Series Webinar: A New Method of Optical Alignment Using Bessel Beams

Prior to the invention of the HeNe laser, van Heel used a zone plate to create a light beam that propagated like a laser pointer and used the beam for alignment. He did not realize the beam was a version of what is now called a Bessel beam. In this webinar, Robert Parks of Optical Perspectives Group, will show that with current technology, Bessel beams are created with a core a fraction the diameter of a HeNe laser beam. These beams travel through optical systems as though they are a single ray. Because the beam core is analogous to a theoretical single ray, the beam position and angle can be measured in any axial plane in a lens system. Using this analogy, Mr. Parks will show how Bessel beams are used for optical alignment.