Aluminum Plated Off-axis Parabolic Mirror
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INOUIRY
Aluminum-coated off-axis parabolic reflectors can separate the focus from the light path in space, realize light source collimation and parallel light focusing at a specific angle, and support infinite focus. The total reflection design can eliminate the absorption loss and phase delay introduced by the transmission optical element. The off-axis parabolic mirror with a small hole has a light-transmitting hole at a specified angle on the mirror body, which can realize the coaxial propagation of two light waves in space.
The off-axis angle of the off-axis parabolic reflector is 90° or 45°. The “off-axis angle” means that the focused beam and the collimated beam are perpendicular, that is, the propagation axis of the collimated beam should be perpendicular to the substrate, so as to achieve an ideal focusing effect, as shown in the figure on the right.
The off-axis parabolic reflector is made of high-quality aluminum, and its parabola is coated with a metal reflective film. There are three types: protected gold, protected silver, and UV-enhanced aluminum.
The average reflectivity of the protected gold off-axis parabolic mirror in the 0.65-12um band can reach more than 96%,
The average reflectivity of the protected silver off-axis parabolic mirror in the 0.45-2um band can reach more than 95%;
The average reflectivity of the UV-enhanced aluminum off-axis parabolic mirror in the 250-450nm band can reach more than 85%.
Technical parameters with Aluminum Al Coated Off Axis Parabolic Mirror
| Diameter: | 12.7mm, 25.4mm, 38.1mm, 50.8mm, 76.2mm, 101.6mm, 127mm, 152.4mm, 177.8mm, 203.2mm optional or custom according to your requirement |
|---|---|
| Clear aperture: | >90% |
| Reflection focal length: | 15.0mm-152.4mm optional or custom |
| Focal length tolerance: | ±1% |
| Reflectivity: | Ravg >96% |
| Off-axis angle: | 90°/45° |
| Surface quality: | 40/20 (scratches/pits) |
| Surface flatness: | λ/4 (@633 nm) / custom |
| Surface roughness: | <100 Å / custom |
| Coated: | Aluminum , Sliver, Gold coated |
spectral curve with off axis parabolic reflective lens
Inventory Parameters with AL coated Off Axis Parabolic Reflector
| Diameter (mm) | Reflection effective focal length (mm) | alignment hole | Coating |
|---|---|---|---|
| 12.7 | 15-152.4 | With or without holes | Aluminum coated |
| 25.4 | 15-152.4 | With or without holes | Aluminum coated |
| 38.1 | 15-152.4 | With or without holes | Aluminum coated |
| 50.8 | 15-152.4 | With or without holes | Aluminum coated |
| 76.2 | 15-152.4 | With or without holes | Aluminum coated |
| 101.6 | 15-152.4 | With or without holes | Aluminum coated |
| 127 | 15-152.4 | With or without holes | Aluminum coated |
| 152.4 | 15-152.4 | With or without holes | Aluminum coated |
| 177.8 | 15-152.4 | With or without holes | Aluminum coated |
| 203.2 | 15-152.4 | With or without holes | Aluminum coated |
If you are interested and need custom Elliptical Mirrors or bulk orders, please contact our sales team: info@borisuns.com
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