Determine the effective focal length, the back focal length, and the effective numerical aperture of a ball lens based on its diameter, its refractive index, and the diameter of the collimated beam entering or exiting the ball lens. The effective numerical aperture of the application can only be calculated if the user knows the beam diameter. Knowing the numerical aperture is particularly useful when using ball lenses to couple light from a fiber to a laser or to another fiber.Ball lenses are commonly used to improve signal quality in fiber coupling applications, or for use in bar code scanning Optical Glass Ball Lens,1mm Optical Glass Ball Lens,Hemispheric Lens Ball Lens,Optical Ball Lens Changchun Ruiqi Optoelectronics Co.,Ltd , https://www.ruiqi-optics.com
applications or endoscopy.
Half-Ball lenses are ideal for applications such as fiber communication,endoscopy, microscopy, laser measurement systems and
optical pick-up devices,Such as including H-K9L(N-BK7), Sapphire, CaF2, BaF2, ZnSe or custom materials upon request.
Ball lens and half ball lens feature short back focal lengths to minimize the distance needed from the ball Lens to the optical
Bearings should be cleaned before installation. When installing, you should use special tools to press the auxiliary bearing straight evenly, do not use hand hammer percussion, in particular, directly on the bearing percussion. When the bearing race and seat hole with loose, you should repair the seat hole or replace the bearing, do not use the bearing mating surface pitting or pad copper skin barely used. Bearings should be removed when using a suitable pull the bearings out, do not use chisels, hand hammer and other percussion bearings.