Traditional spherical lenses will produce spherical aberration. Spherical lenses have undesirable characteristics (called spherical aberration). This characteristic causes the light to be diffracted the farther away from the optical axis of the lens. Spherical aberration leads to a decrease in image clarity. Aspheric lenses The shape is optimized for excellent imaging properties. The main advantage is the ability to correct spherical aberration. Aspheric lenses can not only effectively eliminate spherical aberration, but also eliminate other forms of aberration produced by the lens.
Aspheric lenses are single element designs that help reduce the number of lenses in multi-lens optical assemblies. In other words, unlike traditional lenses, which have a spherical shape, aspheric lenses have more complex surfaces. The reduction in total component count not only helps reduce system size or weight, but also simplifies the assembly process. In this way, its structural design is more compact and more powerful than similar systems based on spherical lenses. Incorporating aspherics into applications such as focusing the output of laser diodes not only reduces overall cost, but also outperforms components designed using traditional spherical
Optical Lenses.
-Materials: almost all types of glass, silica, germanium, silicon, infrared lenses, glass-ceramics
-Diffraction limited mass (Strehl maximum 0.99)
-Surface roughness value as low as RMSi≤50nm
-High-end optical coating
Fused quartz Aspheric Lens
-Surface roughness RMSi≤20nm
-Suitable for high power laser applications
-High-end off-the-shelf optics with lowest roughness (Rq≤0.5nm) to reduce scattering
-Available in 7 standard coatings (customized coatings available upon request)
-Laser-induced damage threshold 12 J/cm², 100 Hz, 6 ns, 532 nm
-Test equipment application
-Beam focusing application
-Beam collimation applications