BARRINGTON, N.J., 29 Nov. 2007. Edmund Optics in Barrington, N.J., is introducing the Techspec precision aspheric lenses of UV fused silica that combine an aspheric element with proprietary grinding and polishing equipment.
The lenses feature low f-numbers for light gathering and focusing, as well as several coating options. They are for collecting and focusing low-intensity UV sources including fluorescent dyes, fluorophores, and mercury light sources.
The lenses are computer optimized to eliminate spherical aberration and minimize higher order aberrations. The UV fused silica substrate offers a low coefficient of thermal expansion and a high operating temperature, for tightly toleranced applications in the visible as well as in the infrared.
The lenses provide a clear aperture of 90 percent, and are manufactured to a 60-40 surface quality with a surface accuracy as low as 0.75-micron RMS and a diameter tolerance of +0.0/-0.1 millimeters.
The lenses are available with a 25-millimeter diameter, at focal lengths of 25 and 30 millimeters. Additional diameters, focal lengths, and coating options are to be released in early 2008. Techspec UV Precision Aspheric Lenses are RoHS compliant.
For more information contact Edmund Optics online at www.edmundoptics.com.