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Off-Axis Parabolic Mirror

Shanghai Optics is one of top custom optical manufacturers from China. With over 55 years of experience in optics manufacturing, we provide most cost effective solutions for our customers worldwide.

Off-axis paraboloids are excellent for collimation of a point source and for collecting of light from a distant source. The focal point is located outside of the collection area so that shadowing is eliminated.

These paraboloids are hand polished from large blanks of metal. They are finished to an accuracy of /10 and are provided with a measured interferogram. The back surface is ground so that when mounted the mirror normal bisects the angle between the focal axis and the collimated axis.

  • Perfect for collimating point sources
  • Spherical and chromatic aberration free
  • Standard diameters from 2.5 to 10.0 inches
Formula

Off-Axis Parabolic Mirror Factory Standard – Contact us for manufacturing limit or custom specifications

SpecificationDimension
MaterialAluminum
Diameter rangemmoff-axis x 2 + diameter </= 280
Diameter tolerancemm+0, -0.2
Focal length tolerance+/- 1 %
Off-axis distance tolerancemm+6, -0
Surface accuracy1/10 lambda RMS
Surface quality60-40
NoteOptics design available upon request

 

SpecificationDimensionPart Number
OAPM-15-10OAPM-30-20OAPM-45-10OAPM-60-20
Type15° Off-Axis30° Off-Axis45° Off-Axis60° Off-Axis
Diametermm25.450.8025.450.8
Effective Focal Length EFLmm387.6054.45148.79135.45
Y Offsetmm3.9527.204.144.62
Noteother size and custom coating are available upon request

 

Off-Axis Parabolic Metal Mirrors

Part NumberFocal Length  Diameter, DThickness, TeOff-axis distance,Off-axis angle
(m)(Inches)(mm)(mm)OAD(mm)degrees
0.52.563.515606.9
0.75376.215806.1
12.563.55603.4
14101.6171106.3
1.25376.215803.7
1.255127201004.6
1.56152.4251003.8
24101.6171103.2
25127201002.9
28203.2331504.3
2.510254451754
36152.4251001.9
48203.2331502.2
510254421752


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