Brand: Outai Optics

Series: Lens series

Type: Curved lunar lens

Specification: Material: Quartz glass, H-K9L

Diameter: 18mm 24mm

Center thickness: 5.7mm 5.5mm

Front curvature radius R1:18.59mm 20.422mm

After curvature radius R2: -49.886mm-43.022mm

Anti-reflection film: AR400 ~ 700nm

Finish: 40-20

Transmitted wavefront error: < λ/4@633nm

Features: Meniscus lens is divided into positive meniscus lens and negative meniscus lens. Meniscus lenses are used to reduce spherical aberration to a greater extent

To obtain a smaller focus and less aberration than the flat convex lens, to improve the image quality. To combine with another lens

When used, a positive meniscus lens can shorten the focal length, thereby increasing the system without introducing significant spherical aberrations

The numerical aperture NA.

Applications: Positive meniscus lenses are often used for beam focusing, while negative meniscus lenses are often used for beam expanding applications.