Material: optical glass K9, quartz, fused silica, BK7， sapphire
Size: φ 5mm~260mm
Dimensional tolerance: -0.02~0.1mm
Center thickness tolerance: -0.02~0.1mm
Curvature radius tolerance:<0.001mm
Surface finish: 10/5~60/40
Surface type: λ/8 to λ/2
Aperture:>90%
Inverted edge: ＜ 0.3mm * 45 °
Coating: Coating with anti reflective film
If you have different requirements, please consult customer service.
A crescent lens, also known as a concave convex lens, can reduce the spherical aberration and produce the minimum straight incident light focus. It is based on the relative curvature of two surfaces, and can be a positive or negative lens. The center of a negative meniscus lens is thinner than its periphery, while the center of a positive meniscus lens is thicker than its periphery.
The Meniscus Lens is a special type of lens that consists of a convex surface on one side (outward curvature) and a concave surface on the other side (inward curvature), forming a crescent shaped lens as a whole, hence its name.
Imaging equipment (cameras, microscopes, telescopes)
Laser technology (processing, communication, sensing)
Consumer electronics (AR/VR, glasses, displays)
Industry and Research (Measurement, Projection, Aerospace)