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.
Concave convex lens, also known as crescent lens, can reduce the spherical aberration and produce the minimum straight incident light focus. It is based on the relative curvature of the two surfaces. A crescent lens can be a positive lens or a 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)