Plano-Concave lenses have one flat surface, and one surface that curves inwards. This results in a negative focal length and negative spherical aberration, so PL-Cc lenses can be used to balance out aberrations of other lenses in the system. To maximize the use of PL-Cc lenses in a system to reduce spherical aberration, coma and distortion, object and image should be at absolute conjugate ratios greater than 5:1 and less than 1:5. They can be used for image reduction or to diverge light and are often utilized to increase the focal lengths in lens systems.
Higher precision specifications available upon request. Please contact us with your specific requirement.