Ar Coating Bk7 Fused Silica Double Concave Spherical Lens Laser and Imaging

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or moulded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.

Bi-concave lenses are useful for a wide range of beam expansion or negative imaging applications, Also, they can be used in laser beam expander, optical characterreaders, viewers, and projection systems. These lenses are manufactured from BK7A or UV Fused Silica. These bi-concave lenses may be combined with other lenses to form complex imaging systems. These lenses are manufactured from BK7A or Fused Silica, and coating with AR/AR@450-650nm, 450nm-650nm is broadband wavelength of visible light, it has high applicability. We can also customize all kinds of wavelengths according to our requirements.

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