Sapphire Optical Ball Lens

Ruby or ruby doped sapphire owes its red color to traces of chromium oxide chromium content for ruby balls is typically 0 5.

Sapphire optical ball lens.

Balls hemispheres synthetic sapphire bearings and ruby bearings are recognized universally as the ideal material for instruments. Sapphire optics and sapphire custom shapes including sapphire balls sapphire lenses sapphire prisms and mechanical parts hold a unique place in the world of optics. A sapphire lens ball lens and prism all exhibit exceptional performance in a number of applications that require extreme mechanical optical thermal and chemical robustness. From figure 2 the na of an n bk7 ball lens is about 0 22 for d d 0 3 to 0 35.

Index of refraction of ball lens 1 5168 numerical aperture of fiber optic 0 22. You would need an n bk7 ball lens with a diameter greater than 6mm 2mm 0 33 to couple a 2mm laser source into a 0 22 na fiber. 0 15mm in sapphire balls ruby balls ceramic balls glass fused silica lens and more. Sapphire half ball lenses are available to simplify mounting or system integration.

Sapphire and ruby half ball hemispherical lenses feature a very short back focal length with the convenience of a flat surface for easy mounting. Sapphire spheres ruby ball glass balls ceramic balls and fused silica balls can be made with drilled holes ground into hemispherical lenses drum ball lenses and given an ar coating to minimize reflection for optical applications. Sapphire features a high index of refraction and excellent broadband transmission characteristics. Ball half ball lenses february 17 2017 ball lenses are polished spherical lenses made by optical glass fused silica sapphire or other optical materials which has relatively high transmission rate for diode with antireflection coating.

Sapphire and ruby ball lenses are both made from al 2 0 3. Edmund optics offers a variety of sapphire optical components for a range of applications including ball lenses spherical lenses or windows. Series msb spheres can be used not only as ball bearings but also as spacers in metrology applications check valve ball seats piston valve seats in flow meters bar code readers and fiber optics. While their physical and chemical properties are basically the same their optical properties are somewhat different.

Mechanical optical ball lens and hemispheres from dia. Series msb spheres can also be ground and polished in half or to a specific diameter and center thickness to make an inexpensive plano convex lens. Sapphire ball lenses feature high refractive indices ideal for minimizing the distance between fiber output and lens. Ruby half ball lenses are easier to see and therefore easier to handle for physical applications.

Equation 3 yields d d 0 33 for na 0 22. Fiber optics flow meters.