POSITIVE MENISCUS, NEGATIVE MENISCUS

Positive meniscus lenses are designed to minimize spherical aberration and are usually used in small fnumber applications 
 (f#〈2.5). For 2.5 f#〈10, meniscus lenses can also improve image quality and reduce spot size.

Negative Meniscus lenses are offered as an alternative to other negative lenses and are particularly appropriate for the high index IR materials. They are commonly used in beam expanding applications where minimal spherical aberration is desired.

MOS Meniscus Lenses are designed to customers requirements. Both sides can be coated with an MOS high efficiency narrowband, anti-reflective coating

EXAMPLE 1: MN25030K05063NA is a round negative meniscus lens, 25mm diameter, 30mm focal 

Length, and it is made of BK7, CT is 5mm, and design wavelength is 633nm, A/R coated both sides. 

EXAMPLE 2: ML10020G05A06NA is a positive meniscus lens, 1”in diameter, focal length is 2”, 

material is Germanium, CT is 5mm, wavelength is 10.6 microns, A/R coated both sides.