| Place of Origin |
China (Mainland) |
| Brand Name |
HLL |
| Model Number |
HLL-094HG |
optical lens Plano convex lenses, Plano concave lenses, Bi-convex lenses, Bi-concave lenses, meniscus lenses, achromatics lenses, ball lens specification: o Material: Bk7, Quartz, Caf2, Sapphire.oDiameter: 2.5-45mm .o Diameter tolerance: 0.05 to 0.1mm.o Edge thickness: 1mm +/- 0.10mm.o Focal length: 0.1% to 2% .o Surface quantity: 80/50 to 20/10 .oCentration: 1 to 3Arc minuteso Fringes: 1 to 5o Coating: No or AR.