λ/4 UV Fused Silica Plano-convex Lenses

A Plano-Convex (PCX) Lens is an optical element with a positive focal length and a flat-spherical surface profile. The lenses are designed for light focusing, collection, and collimating. Plano convex lens could also be used to decrease the focal length of a group of optical assemblies and enlarge images. Compared to Biconvex lenses, Plano-convex lenses have two unidentical sides and therefore work best for infinite conjugate ratios (objective distance: image distance). However, plano-convex lenses still reduce spherical aberrations to a quite low extent when the absolute conjugate ratio is greater than 5:1. For a conjugate ratio below 5:1, consider using plano-convex lenses in pair or biconvex lens.

UV Fused Silica, identical to JGS1, is the amorphous form of SiO2. 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 N-BK7, the material is more reliable for high-temperature environments and higher transmission to the ultraviolet spectrum. 

Hangzhou Shalom EO offers stocked and custom Plano Convex Lenses made of UV Fused Silica (JGS1) with excellent mechanical, and chemical rigidness. This page highlights the standard grade off-the-shelf λ/4 Irregularities, 40/20 S/D UV Fused Silica Plano-convex lenses, while high precision UVFS pcx lenses with λ/10 Irregularities and 10/5 S/D surface qualities made from Corning 7980 glass are also available.

Our UV Fused Silica plano-convex lenses are exquisite for various incorporations into detectors, imaging instruments, lasers, fiber lasers, etc. Focal lengths of these λ/4 UV Fused Silica plano-convex lenses range from 10-1000mm and are accessible for high precision UVFS pcx), while other focal lengths could be customized. The standard diameters are 6-75.0mm, tailored diameters are also possible. 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. The UVFS pcx lenses on this page are typically offered in uncoated versions, whilst custom v-coatings and BBAR coatings could also be arranged upon request.

Application Notes:

1. Because the refraction angles of the incident lights have a slight difference, the focal length of the two sides is also different. To minimize spherical aberration, engineers from Shalom EO suggest that when using the lens to focus collimated lights, the collimated lights should be projected to the curved surface of the lens; conversely, when using the lens to collimate a point light source, the light source should be incident on the flat surface.

2. Simplified Calculation of Focal Length of a Plano Convex Lens: focal length = R/(n-1), where R is the radius of curvature and n is the refractive index.

Specifications: