HOME > NITTOH ZOOM(Products & Technologies) > Optical Elements > Aspherical lenses
Mold Design & Manufacture Plastic Molding Surface Treatment Optical Solutions Optical Elements

Aspherical lenses

Aspherical lenses have a complex curved surface which is neither flat not spherical. They are able to correct the spherical aberration and distortion of spherical lenses. In the past, a number of spherical lenses would be combined together to reduce aberration, but miniaturization and lightweighting was difficult and expensive because the brighter the lens, the more lenses were required to adjust the aberration. With aspherical lenses, fewer lenses are required because they do not cause aberration, which enables miniaturization, lightweighting and cost reductions.

Injection molded plastic lenses

Example Specifications
Outer diameterφ2mm～φ100mm
MaterialPMMA, PC, COP, etc.
Applications
Taking lens for DSC, viewfinder for DSLR, projector, etc.
Nittoh also has experience with mass production of high durability AR reflection coatings on PMMA.

Glass molded lenses

Example Specifications
Outer diameterφ30mm
MaterialS-LAM60
Surface accuracy0.2μm
Applications
Lens for DSC, lens for projector, lens for surveillance camera

Hybrid lenses

Example Specifications
Outer diameterφ50mm
Surface accuracy0.3μm
Applications
Lens for DSC, lens for projector, lens for surveillance camera

Glass and plastic ground lenses