Designed for use at conjugates of infinity and the focal length, our polymer aspheres fit standard ½” and 1” lens mounts and have a relatively narrow field of view.
Lenses are available uncoated or with broadband antireflection (AR) coatings. Custom coatings can also be specified for particular wavelength ranges or performance goals.
Below is an overview of our stock polymer aspheres. Download the full polymer aspheres list for more information about lenses for visible, near-infrared, and ultraviolet light applications.
Naming Key Example:
ASP-PCX-0.5-0.5P-PMMA
ASP [asphere] - PCX [plano-convex] - 0.5 [inch mount size] - 0.5P [inch focal length, positive] -PMMA [material]; DCX = double-convex
Mounting dimensions for PCX lenses:
OD: Outer diameter
CA: Clear aperture
CT: Center thickness
ET: Edge thickness
EFL: Effective focal length
BFL: Back focal length
OD lenses:
1/2" (12.7 mm) OD lenses all have a CA of 0.450" (11.4 mm). 1" (25.4 mm) OD lenses all have a CA of 0.940" (23.9 mm). Lenses are made from acrylic (PMMA), with index n = 1.49 and Abbe number VD = 61.4, and exhibit low birefringence. Typical surface figure tolerance is P-V < 3 µm, mostly power. Typical surface finish is RMS < 5 nm. Centering is held to < 50 µm.
