High Quality Bk7 20mm Half Ball Lens

A Ball Lens consists of a highly transparent spherical ball, usually made of solid glass (fused silica) or another optical material with index of refraction less than. Most ball lenses are made with small diameters - a few millimeters or even less than a millimeter.  The optical physics can be understood by realizing these lenses are, equivalently, two plano-convex lenses separated by a parallel plane. Spherical aberration is inherent in all ball lenses, but becomes a problem if light propagation isn't restricted to a small fraction of the lenses cross-section.  The ratio of the diameter of the ball lens and the diameter of the input source is denoted as d/D, and when this number increases, the focus spot size at the back focal length of the lens also increases.

 

• DG Optics provides a wide-ranging supply of ball lenses to meet project-specific wavelength requirements.
• Material options include: 
• --quartz (260-2500 nm), 
• --sapphire (0.17-5.5 μm)
• --BK7 (or equivalent) (250-2500 nm),
• --UV-grade fused silica (170-2500 nm)
• --as well as B270 (320-2600 nm) and borosilicate (or equivalent) (310-2700 nm) material options.

DG OPTOELECTRONIS Co., Ltd. specialized in manufacturing kinds of optical precision components and lenses. with years' hard work and positive innovation, we have became an optical company integrating lens optical design, production, development and sales. Our company has strong production capacity, in possession of the domestically top production line and excellent workers, which mainly are composed of researchers and technicists of the Chinese Academy of Sciences, they are experienced and can produce wide range of optical articles. The prime products are spherical lens, windows, Prisms, achromatic lens, cylindrical lens, laser optical components, infrared optical components, various crystals and some other relative items. In addition, our company has independently developed a magnifier, microscope, telescope and kinds of conversion lenses. aerospace, industry, scientific, medical instrument, photoelectric device, optical communication and mechanical equipment and so on. 80% of our items are sold abroad, in the meantime we also cooperate with internal companies, we offer OEM service! Over the years, with the concept of " integrity, innovation, quality first ", we constantly provide our clients with the best products and perfect service, sincerely welcome domestic and foreign customers to establish cooperation with us, creating a bright future in optical field!