Specifically shaped for 45° angle applications to fold optical paths. They provide high reflectivity and are commonly used in compact imaging and projection systems.
Circular Clear Aperture at 45°Angle of Incidence: This is the most defining characteristic of elliptical mirrors. When an elliptical mirror is rotated by 45° about its minor axis, the projection of the incident light beam onto the mirror surface forms a perfect circular clear aperture. This makes it highly suitable for use as a 45° bending or turning mirror within an optical path.
| Material | K9, BK7, FS, UVFS, CaF₂, ZnSe |
| Diameter 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 |
Hengpu also offers high-reflectivity coatings, including Aluminum, Gold, Silver, and UV-Enhanced Aluminum.
Protected Gold Coatings: Enhances reflectivity across the visible and infrared (IR) spectrums.
Protected Silver Coatings: Provides higher reflectivity than aluminum coatings in the visible and near-infrared (NIR) spectrums.
Protected Aluminum Coatings: Boosts reflectivity within the visible light range.
UV-Enhanced Aluminum Coatings: Delivers enhanced reflectivity in both the ultraviolet (UV) and visible spectrums.
