λ/10 UV Fused Silica Plano-concave 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 system or condense images. Plano-concave lenses are often incorporated into Galilean beam expanders, also as components to increase the focal length of an optical instrument, or 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 the best type of negative lens to decrease spherical aberration, coma, and distortion. 

UV Fused Silica is the amorphous form of Silicon Dioxide. The material features superior transmission in the UV region and could be utilized for wavelengths ranging from Ultraviolet (UV) to Near-infrared (NIR) spectrum. Other than UV transmission, UV-grade fused silica glass also excels in terms of low thermal expansion, high optical homogeneities, and the absence of fluorescence under UV radiation. Compared with NBK7, the material is more reliable for high-temperature environments and has better transparency to ultraviolet lights. 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. If you are looking for lower costs, Shalom also provides lambda/4 irregularities, 40/20 S/D JGS1 PCV Lenses.

Hangzhou Shalom EO offers stocked and custom Plano Concave Lenses made from Corning High Purity UV Fused Silica Glass (Corning HPFS Glass), or JGS1 with excellent mechanical, and chemical rigidness(The lenses in the stock list are made from Corning 7980-0F, 7980-1D). These lenses could be applied for wavelengths ranging from 200-2200nm, and are high-precision lenses with irregularities of λ/10, and surface qualities of 10/5 S/D. The UV Fused Silica plano concave lenses are exquisite for various incorporations into laser scanners, remote sensing,  imaging instruments, fiber lasers, interferometers, etc.  The focal lengths of the stocked UV Fused Silica plano-convex lenses differ from -25mm to -100mm, while other focal lengths could be customized. Each piece of the lens will undergo strict inspection in Shalom EO’s in-house labs before dispatch, to assure tight tolerance and secure your interest.

To further enhance the transmission of the UVFS plano-concave lens, Broadband Anti-reflection (BBAR) coatings could be furnished to accommodate the requirements for multi-wavelength and tunable lasers. V coatings, which are a special form of AR coatings that deliver an ultra-low reflection at a narrow band of designed wavelengths are available, too. These coated lenses are in particular advantageous for elevating the efficiencies of complex optical instruments. Besides, Uncoated UV Fused Silica plano concave lenses are also accessible in Shalom EO.