Aspherical Lenses (ASF)

Aspherical Lenses (ASF) are characterized by a non-spherical curved surface obtained by means of a turning off-axis of Spherical lenses. They are mainly used close to a light source as they are able to converge the rays incident side.

Biconvex - Plano Convex - Meniscus - Plano Concave - Biconcave

Materials:
Optical glasses - Germanium (Ge) - Silicon (Si) - Zinc Selenide (ZnSe) - Zinc Sulfide (ZnS) - Calcium Fluoride (CaF2) - Magnesium fluoride (MgF2) - Fused Silica (SiO2) - Plastics - Other materials

Coatings:
- monolayer and multilayer
- antireflection (AR) for visible (VIS)
- antireflection (AR) for near infrared (NIR)
- antireflection (AR) for infrared (IR)
- antireflection (AR) for ultraviolet (UV)
- Indium-tin Oxide coatings (ITO)
- other