Brand: Outai Optics

Series: Lens series

Type: Curved lunar lens (customizable)

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

When used, the positive meniscus lens can shorten the focal length, thereby increasing the numerical aperture NA of the system without introducing significant spherical aberrations.

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