Manufactured from N-BK7, these windows provide high surface quality and transmission for visible imaging. They are ideal for general industrial sensing and standard photography systems.
Optical windows are among the most fundamental components in optics, serving as flat, protective barriers to shield electronic components, sensors, and semiconductor devices within an optical path. They do not alter the magnification of a system and only affect the optical path length. Key mechanical and optical specifications for selecting the appropriate window for your specific application include transmittance, surface flatness, thickness, parallelism, and substrate material.
Hengpu offers high-precision optical windows fabricated from a wide variety of materials, including Zinc Selenide (ZnSe), Germanium (Ge), and Silicon (Si) windows optimized for Near-Infrared (NIR) and Infrared (IR) spectral bands.
| Material | K9, BK7, FS, UVFS, CaF₂, ZnSe |
| Diameter | 5-300 mm |
| Diameter tolerance | ±0.05 mm |
| Center thickness tolerance | ±0.05 mm |
| Angle error | <3 arc min |
| Surface accuracy | λ/4@ 633nm or λ/10@633nm |
| Surface quality (S/D) | 60/40 or 20/10 |
| Effective caliber | 90% |
| Edge reversal | <0.2*45° |
| Coating | Customized upon request |
