Optical Lenses
Plano-concave Lens is a bulk optical singlet with a flat side and a convex side, which contribute to a negative focal length and a negative spherical aberration. Plano concave lens diverges collimated light beams from a virtual focus and could be used to spread a collimated light beam, increase the focal length of an optical instrument, etc. Plano-concave lenses are often incorporated into Galilean beam expanders, also as components to balance out the spherical aberration, improving image qualities. When the absolute conjugate ratio is greater than 5:1(that is, the absolute value of objective distance: image distance), a Plano-concave lens is an excellent option to decrease spherical aberration, coma, and distortion.
Hangzhou Shalom EO offers stocked and custom Plano-concave Lenses, where you can browse and shop Off-the-Shelf N-BK7 Plano Concave Lenses, Off-the-Shelf UVFS Plano Concave Lenses, Off-the-Shelf CaF2 Plano Concave Lenses and custom Plano concave lenses made from a wide assortment of optical materials including sapphire, ruby, Flint Glass/BaF2/Ge/Si, etc. Shalom EO is a proficient and capable supplier and manufacturer of optical lens components. Shalom EO also leverages a stringent inspection procedure to ensure that the actual parameters of the lenses abide by our published specifications. Our inspection procedure includes an in-process checking stage of the optical properties of lenses and a final test of coatings, dimension precisions, and the visual observation of scratch/dig, apertures, inclusions, etc.
We provide stocked and custom N-BK7 Plano-concave Lenses with a diameter range of 0.5-300mm, that ensure simple incorporation into various instruments like laser scanners, remote sensing, and imaging instruments, fiber lasers, interferometers, etc. that ensures simple incorporation into various instruments like laser scanners, remote sensing, and imaging instruments, fiber lasers, interferometers, etc. laser scanners, remote sensing, and imaging instruments, fiber lasers, interferometers, etc. The focal lengths of the stocked N-BK7 Plano-concave lenses differ from -25mm to -100mm, while other focal lengths could be customized. These N-BK7 lenses feature λ/4-λ irregularities and 40/20 scratch/dig. Plano Concave Lenses made from Corning High Purity UV Fused Silica Glass (Corning HPFS Glass), or JGS1 with excellent mechanical, and chemical rigidness are available in high-precision versions with irregularities of λ/10, and surface qualities of 10/5 S/D and normal versions with irregularities of λ/4-λ, and surface qualities of 40/20. Our CaF2 Plano concave lenses (standard) have diameters ranging from 12.7mm to 25.4mm and focal lengths ranging from -18mm to -500mm. These stock CaF2 plano-convex lenses are currently available in uncoated versions, but custom coatings including Broadband AR Coatings (BBAR) with superior broadband performance, V coatings with minimized reflection over a narrow waveband, and MgF2 with high price-competitiveness are all procurable through inquiries.
