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Spherical reflectors

High-order curved primary mirrors


Name Inspection item Inspection result (mm) Inspection item Inspection result (mm)
526 high-order curved primary mirror Outer diameter 525.9126 Center thickness 60.9572
Effective aperture φ516 Top's radius of curvature 2348.756
Aperture of light outlet Guaranteed by machining K value Guaranteed by machining
Surface finish 80/50 Off-axis distance 460.0
Surface roughness Guaranteed by machining Diameter of back hole φ100.0
Edge thickness difference 0.0157 Depth of back hole 20.0
Edge thickness 75.0065

Surface flatness precision value:

Spherical lens

Name Inspection item Inspection result Inspection item Inspection result
252 spherical lens Outer diameter φ251.9434 N 0.5
Edge thickness 12.36 △N 0.25;0.25
Center thickness 50.0317 Centration Unmeasurable
R1 866.1178 Surface finish IV
R2 293.40792 Clear aperture φ246; φ246
NO. Wavelength (nm) Reflectivity
1 518.00 0.129
2 532.00 0.107
3 637.00 0.086
4 656.00 0.148
5 1072.00 0.119
6 1085.00 0.148

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