Gold-Coated Off-Axis Parabolic Mirror TJFSGXLZPWMFSJ2010010
Off-axis parabolic (GMP) mirrors are front-surface mirrors whose reflecting surfaces are sections cut from a symmetric parent paraboloid. A highly reflective metallic coating enables dispersion-free focusing of collimated beams or collimation of point sources. The off-axis design separates incident and outgoing beams by a certain angle. An Off-Axis Parabolic Mirror (OAP) is an off-axis segment of a parabolic mirror with its optical axis separated from its geometric center. Key geometric parameters are stated in the source as: parent paraboloid focal length f=2R, where R is the vertex radius of curvature; off-axis distance d=f⋅tanθ, where θ is the off-axis angle; effective focal length EFL=2cosθf. Note: the table above shows only some mirror dimensions and parameters. Custom dimensions and parameters are supported.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Surface Figure Accuracy [Range; inspection standard: ISO 10110-5] | typical:λ/2~λ/20 (PV Value @632.8nm) |
| Off-Axis Angle Tolerance [Range; inspection standard: MIL-STD-810G] | typical:±0.5 arcmin |
| Focal Length Error [Range; inspection standard: DIN 3140] | typical:±0.1% |
| Surface Roughness [Range; inspection standard: ISO 4287] | typical:<0.5nm Ra |
| Coating reflectance [Range; inspection standard: ASTM E903] | typical:>98% (Metallic Coating)/>99% (Dielectric Coating) |
| Diameter | 76.2 mm |
| Focal length (EFL) | 228.6 mm |
| Coating | Gold High-Reflection Coating |
| Material | AL6061 |
| Reflecting Surface Quality | 40/20 |
| Height | 88.2 mm |
| Hole pattern | Through-Hole |
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Datasheet
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