Optical glass 185 nm - 2.1 μm UV Fused Silica Plano-Convex Spherical Lenses

These uncoated UV-Grade Fused Silica Plano-Convex lenses are available in sizes ranging from Ø2 mm to Ø75 mm. UV-grade fused silica offers high transmission in the deep UV and exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications from the UV to the near IR. In addition, UV fused silica has better homogeneity and a lower coefficient of thermal expansion than N-BK7.

Plano-convex lenses can focus a collimated beam or collimate light from a point source. To minimize the introduction of spherical aberration, a collimated light source should be incident on the curved surface of the lens when being focused and a point light source should be incident on the planar surface when being collimated. When image quality is not critical, plano-convex lenses can also be used as a substitute for achromatic doublets.

The focal length of each lens can be calculated using a simplified thick lens equation:

f = R/(n-1),

where n is the index of refraction and R is the radius of curvature of the lens surface. These lenses are fabricated from UV-Grade Fused Silica, which has an Abbe Number of 67.82; this value is an indicator of the dispersion.

When deciding between a plano-convex lens and a bi-convex lens, both of which cause collimated incident light to converge, it is usually preferable to choose a plano-convex lens if the desired absolute magnification is either less than 0.2 or greater than 5. Between these two values, bi-convex lenses are generally preferred.

Map optics technology provides uncoated, coated anti - reflection film of double - concave mirror sheet.
Anti-reflection membrane options include UV, VIS, NIR, and SWIR.
Germanium, silicon, or zinc selenide substrates are suitable for infrared applications, while fused quartz is suitable for uv applications.