87-973 10mm Dia. UVFS Aspheric Lens; EFL=8mm; NA=0.63 Uncoated

The 87-973 is a high-quality aspheric lens, 10mm in diameter, manufactured by Edmund Optics. This lens, designed for use in the ultraviolet spectrum, is made from UV fused silica, a material known for its excellent transparency in the UV range. The lens is uncoated, offering a numerical aperture (NA) of 0.63 and an effective focal length (EFL) of 8mm.

The lens's geometry is defined by its inner and outer radii, both of which are 0mm, indicating a circular shape. The lens has a thickness of 3.05mm at the edge and 8mm at the center. The first and second radii of curvature (r1 and r2) are 3.668mm and 0mm, respectively, while the back focal length (bfl) is 2.52mm.

The lens's aspheric design is further defined by its conic constant (k1), which is -0.6304671. The lens does not have any higher-order aspheric terms (k2, k3, etc.). The NA, a measure of the lens's light-gathering ability, is 0.63. The lens's front surface has a decentering of 0.00030257272, a slope of 1.3317495e-05, a curvature of -4.5097314e-07, a conic constant of 6.2444029e-08, a spherical aberration of -2.2976468e-09, and a coma of 5.0463285e-11.

This lens is a versatile choice for applications requiring high-performance UV optics. Its uncoated design makes it suitable for use in systems where anti-reflection coatings are not necessary or desirable.