GRIN LENS, Gradient Index Lenses, Gold plated coating available for the application of Collimator, Fiber Optics, Isolator, MEMS
GRadient INdex lens or GRIN lens is used to focus and collimate light sources. It is widely used in both active and passive fiber-optics components, MEMs and imaging system. Grin Lens Advantage: When light rays travels between air and glass, it will change its direction according to the change of index of refraction of the traveled medium. As illustrated in Fig 1., conventional lens focus light beam by bending lights at its surface through controlling the lens shape and smoothness of its surface. Unlike conventional lenses, GRIN lenses focus light by gradually varying the index of refraction within the lens material, rather than the thickness, of the optical element. Through a precisely controlled radial variation of the lens material’s index of refraction from the optical axis to the edge of the lens, GRIN lens can smoothly and continually redirect light beam to point of focus without the need to tightly-control the surface curvature. See Fig 2.
In fiber optics applications, Grin Lens with flat or angle polished surfaces are used to collimate light emitted from an optical fiber or to focus an incident beam into an optical fiber. AR coatings are usually applied to the end faces to avoid unwanted back reflection. The index of refraction of Grin Lens rod is expressed in the following formula:
Red Optronics supply low insertion loss Grin Lens at competitive price. In addition, we offer gold plated/coated Grin-Lens and C-Lens for demanding telecom applications.
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Red Optronics supplies high quality Grin Lens at competitive price.. Please contact us and get a free quote. For more information, please visit our website at: http://www.redoptronics.com
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