Lenses are used to focus or disperse light through use of curved surfaces of a specific medium. Typically lenses are made of glass but they can also be made other transparent materials like plastic or crystalline materials. The first lenses were simple magnifying glasses that were used to read small text and through trial and error evolved into a primitive version of the reading glasses many of use today. Applications for lenses are exceptionally diverse but the most common uses today are for Microscopy, Laser Machining, Sensing, Machine Vision, Satellite Imaging and Astronomy. Some of the most common types include spherical lenses, aspherical lenses, achromatic lenses, cylindrical lenses, Fly-Eye lens, and anamorphic lenses. If our extensive selection of catalog lenses do not meed your needs, please send us a request for a custom lens made to your specifications.