Cart
| Code | 670123 | Type | Metallic Concave Mirror | |
| Optical Component Material | Borofloat 33 | Diameter | 50.8mm | |
| Diameter Tolerance | +0.0 / -0.1mm | Clear Aperture | 80% CA | |
| Center Thickness | 9mm | Thickness Tolerance | ±0.25mm | |
| Edge Thickness | 10.1mm | Operating Wavelength Range | 480nm – 20.0μm | |
| Focal Length | -150mm | Coating | Silver coating with SiO₂ protective layer | |
| Reflectivity | Ravg > 96%a @ 480nm – 2.0μm Ravg > 97.5%a @ 2.0 – 20μm |
Surface Quality (Scratch/Dig) | 40/20 | |
| Surface Flatness (@633nm) | λ/4 | Package Quantity | 1 | |
| Damage Threshold | 0.50J/cm² @ 1550nm, 190fs, 100Hz, Ø11.47μm (100 pulses) |
Substrate Material: Borofloat glass
Operating Wavelength: 480 nm – 20.0 μm (Silver coating)
Protective Layer: SiO₂ overcoat
LBTEK offers silver-coated metallic concave mirrors with diameters of Ø12.7 mm, Ø25.4 mm, and Ø50.8 mm. These mirrors are well-suited for broadband applications such as beam focusing, collimation, collection, and imaging. Metallic concave mirrors provide high reflectivity across a wide spectral range without introducing chromatic aberrations, as the reflection occurs at the metallic surface.
The silver coating, however, is prone to oxidation and discoloration in high-humidity environments. To address this, LBTEK applies a SiO₂ protective layer to isolate the silver film from direct contact with air. While this coating improves durability, silver mirrors should still be stored and used only in low-humidity, room-temperature environments.
Always wear latex gloves or finger cots when handling to prevent contamination from oils or residues.
Handle with care and avoid touching the reflective surface or edges.
Product evaluation
%High praise
There are comments