Off-Axis Big Aperture Paraboloid Lenses Combination
Product Details
The traditional manual method is adopted to process the lager diameter paraboloid and hyperboloidlenswithBK7(ZKN4or Zerodur)material, useknife-edgeinstrument for test, with high processing accuracy,and the diameter can be within 900mm.surfaceaccuracy could beless than 1/40 lambda.Through high precision parallel light tube, combined processing method to ensure the image quality of primary and secondary mirror combined system.With knife-edge instrument, the spot size can be controlled within 0.02mm. can also process non-focal beam expansion system, that is, Parallel light comes inand parallel light comes out.Expansioncan be designed according to customerrequirements.
Through the way of sleeve, the combination could beobtained.
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Off-Axis Aspheric MirrorMaterial |
BK7, ZK N4 ,Zerodur ect. |
|
Diameter tolerance |
+0.0/-0.15mm |
|
Diameter of primary and secondary mirror |
≤900mm |
|
Structure of Primary and secondary mirror |
Paraboloid+ Paraboloid/ Paraboloid+Hyperboloid |
|
Type |
Primary and secondary mirror imaging/Afocal system |
|
Focal length tolerance |
±2% |
|
Clear aperture |
≥90% |
|
Light spot |
|
|
Surface Quality |
60-40 |
|
Bevel |
|
|
Coating |
Metal reflection coating/Dielectric reflection coating |
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