
◆ Features
ZF7L optical glass is a type of heavy flint glass characterized by its high refractive index and high dispersion. It is specifically designed for correcting chromatic aberration in optical systems.
High-precision surface figure control and strict material specifications.
High optical uniformity and low stress birefringence ensure the consistency of optical performance.
◆ Common Specifications
Material | ZF7L |
Coating | Uncoated |
Surface Quality | 60/40 |
Surface Flatness | λ/2@633nm
|
◆ Applications
Imaging optical systems
Substrates for beam-splitting elements of spectrometers
Industrial inspection windows
Optical experimental components for education and scientific research
Dimensional requirements: The outer diameter and thickness shall be determined based on the spatial layout of the optical system and the beam size.
Mounting configuration: All circular lenses from Mloptic can be mounted on standard lens sleeves, fixed lens mounts, and various coaxial mounting plates.
Cleaning taboos: Do not use abrasive cleaning agents or hard tools (such as metal brushes) for cleaning, as they may damage the surface optical quality. It is recommended to use optical-specific cleaning agents such as anhydrous ethanol or isopropyl alcohol, and gently wipe with a soft, lint-free cloth. After cleaning, the surface must be thoroughly dried to prevent contamination from residual liquids.
Transportation and storage: Optical surfaces must be strictly protected during transportation. When packaging, direct contact between protective films and optical surfaces is prohibited to prevent contamination by foreign substances or scratches.


Material | ZF7L | Diameter | Φ25 mm |
Diameter Tolerance | 0.0/-0.3mm | Thickness | 3mm |
Thickness Tolerance | ±0.1 mm | Clear aperture | >90%CA |
Coating | Uncoated | Surface Flatness | λ/2@633nm
|
Surface Quality | 60/40 |


Material | HWB780 | Diameter | Φ25 mm |
Diameter Tolerance | 0/-0.2mm | Thickness | 3mm |
Thickness Tolerance | ±0.1mm | Clear aperture | Φ24mm |
Coating | Uncoated | Parallelism | 3' |
Surface Quality | 40/20 | Surface Flatness | 2.5λ@633nm |


Material | HWB830 | Diameter | Φ10 mm |
Diameter Tolerance | ±0.05mm | Thickness | 3mm |
Thickness Tolerance | ±0.05mm | Clear aperture | 65%CA |
Coating | AR coating | Reflectance | Rmax<0.25%@865nm±50nm |
Surface Quality | 60/40 | Surface Flatness | λ/14 RMS@633nm |
Parallelism | 1' | Angle of incidence | 0°~10° |