Processing Tolerances & Precision Standard of Optical Glass Dome
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- publisher
- FELIX GLASS
- Issue Time
- Apr 30,2026
Summary
We control strict processing tolerance for BK7 & K9 optical glass dome, with ±0.01mm precision, roundness and flatness control for high-end optical equipment.

Precision tolerance directly determines the overall performance and assembly matching effect of optical glass dome. High-precision BK7 and K9 glass dome plays a key role in optical imaging, sensor protection and high-end optical system applications.
Our factory implements strict standard on dimensional tolerance, spherical roundness and surface flatness of each optical dome. The conventional processing tolerance can reach ±0.02 mm, and customized ultra-precision optical glass dome can be controlled within ±0.01 mm.
Every glass dome will pass multi-stage quality inspection, including surface defect detection, wall thickness testing and radian calibration. With super smooth polishing, uniform internal stress and no imaging distortion, our products effectively ensure high light transmittance and clear imaging performance.
Standardized production flow and strict quality inspection make our precision optical glass dome keep stable performance even under harsh environment and high-precision working conditions. We also support custom size and coating for all kinds of optical dome projects.
If you need custom optical glass dome with specific tolerance requirements, feel free to contact us for technical support and quotation