He Rui optics' negative meniscus lenses are designed to minimize spherical aberration. These N-BK7, UV fused silica, calcium fluoride, and zinc selenide lenses consist of a convex surface and a concave surface where the concave surface has the greater radius of curvature. In combination with another lens, a negative meniscus lens will decrease the NA of the system. A negative meniscus lens is a common element in beam expanding applications.
| Material | optical glass,N-BK7 , Fused Silica, sapphire,Si,Ge,CaF2,LiF,BaF2 |
| Dimensions | 3-400mm |
| Dimension Tolerance | ±0.01mm |
| Thickness Tolerance | ±0.01mm |
| Center thickness | >1mm |
| Focal Length tol. | ±1% |
| Centration | 3 arc minutes |
| Surface Quality | 80/50 60/40 40-20 20-10 |
| Clear Aperture | >90% |
| Wavelength Range | Substrate Material |
| 180nm-8.0μm | Calcium Fluoride (CaF2) |
| 185 nm-2.1 um | UV Fused Silica |
| 200 nm- 5.0 um | Sapphire |
| 200 nm- 6.0 um | Magnesium Fluoride (MgF2) |
| 220 nm to >50 um | CVD Diamond Windows |
| 230 nm- 1.1 um | UV Fused Silica. Textured Antireflective surface |
| 250 nm- 1.6 um | UV Fused Silica, for 45° AOI |
| 250 nm- 26 um | Potassium Bromide (KBr) |
| 350 nm- 2.0 um | N-BK7 |
| 600 nm- 16 um | Zinc Selenide (ZnSe) |
| 1.2- 8.0 um | Silicon (Si) |
| 1.9- 16 um | Germanium (Ge) |
| 2- 5 μm | Barium Fluoride (BaF2) |
| 1.2- 8.0 um | Silicon (Si) |
| 1.9- 16 um | Germanium (Ge) |
| 2- 5 μm | Barium Fluoride (BaF2) |
He Rui Optics produces a variety of precision optical components with experienced engineers and advanced equipment.We can produce standard and customized optical lens,mirror,filter,prism,windows,crystal,wafers.If you have any requirement,please contact us
Tags: Optical Lenses Optical windows Optical Prisms Optical filters Optical Mirrors Optical Crystals Silicon Wafers Silicon lens cylindrical lenses laser optics infrared optics uv optics
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