General Optics
Variable-Radius Mirrors
Improve CO₂ laser cutting efficiency with this optic that enables dynamic focus depth adjustment and compensation for focal length variations across the working table.
The Variable-Radius Mirror is a unique component that permits beam divergence to be adjusted on-the-fly by varying the optic's radius of curvature with water or air pressure. They can be supplied in a large range of custom configurations.
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Variable-Radius Mirror (VRM) Capabilities
Coherent employs proprietary design techniques to accurately model VRM shape, predict how it will deform under pressure, and optimize it for a specific application.
Typical Copper VRM Specifications |
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Pressurization Method |
Water |
Air |
Mirror Diameter |
57.1 mm |
79.0 mm |
Clear Aperture |
35 mm |
50 mm |
Radii range |
-6 m to 6 m 3 m to Plano Plano to 3 m 1.2 m to -1.6 m |
|
Pressurization Range |
3 to 12 bar |
0 to 12 bar |
Angle of Incidence |
Near normal |
45° |
Pointing Stability |
≤ 30 arc seconds |
|
Reflectivity |
> 99.8% @ 10.6µm |
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