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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.

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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