Product Index：
| Name | Optical Lens |
| Material | K9, BK7, calcium fluoride, magnesium fluoride, JGS series, etc |
| Thickness Tolerance | ±0.02mm |
| Clear Aperture | ＞90% |
| Flatness | λ/4 @632.8nm |
| Transmission | ＞85% |
| Safe bevel | ＜0.2×45° |
| Focal Length Tolerance | ±2% |
| Surface finish | National standard level 3; Us Army mark 40-60 |
| Application | opticl system, photographic sysem, lighting system, laser, camera, monitor, projector, magnifier, telescope, polarizer, electronic instrument, led etc. |
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