China Customized Optical Telescope Eyepieces, Bk7 Cylindrical Lens with Round, Rectangular, Square, Find details about China Optical Lens, Biconvex Lens from Customized Optical Telescope Eyepieces, Bk7 Cylindrical Lens with Round, Rectangular, Square
Design Wavelengths | 1016 nm, 1330 nm, and 1550 nm |
AR Coating Range | 1050 - 1700 nm |
Reflectance over AR Coating Range (0° AOI) | Ravg < 0.5% |
Diameters Available | 5 mm, 6 mm, 6.35 mm, 8 mm, 1/2, 1, 30 mm, or 2" |
Diameter Tolerance | +0.00/-0.10 mm |
Focal Length Tolerance | ±1% |
Surface Quality | 40-20 Scratch-Dig |
Spherical Surface Powera | 3λ/2 |
Spherical Surface Irregularity (Peak to Valley) | λ/4 |
Centration | <3 arcmin |
Clear Aperture | >90% of Diameter |