Aspherical Mirrors

Off-axis Parabolic Mirrors SPA series

High-Precision, High-Quality

Off-axis Parabolic Mirrors SPA series
  • Surface accuracy of λ/6 has been achieved by a newly-developed latest replicating technology (conventional Shimadzu product:λ/2).
  • Stable quality due to premium quality master mirrors.
  • Proven mass-production technology secures steady supply of large quantities.
  • Non-Use of Specific Chemical Substances*1

*1. RoHS Directive: Directive on the restriction of the use of certain hazardous substances (mercury, cadmium, lead, hexavalent chromium, PBB and PBDE) in the EU. (EU Directive 2011/65/EC)

Off-axis parabolic mirror

This aspherical mirror, which focuses parallel light to the focus point without aberrations, or converts a point light source from the focuse point into parallel light without aberrations, is used in spectroscopic systems that require high resolution.

Product List(Table of Code Number)

Code Number*1 On-axis focal length
Off-axis focal length
Off-axis angle
Dimensions W×H(mm) Effective area FA(mm) Central thickness T(mm)
SPA 275-07-6060 275 279.1 7 60×60 Φ56 16
SPA 350-03-4040 350 351 3 40×40 Φ36 10

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(※1) Code Number Meaning :
Product List


Classification Replica parabolic mirror*1
Blank Material Soda glass
Dimensional Tolerance(W,H) 0/-0.2 mm
Central Thickness Tolerance(T) ±0.2 mm
On-axis Focal Length Tolerance(f) ±0.5%
Off-axis Angle Tolerance(θ) ±10'
Surface Accuracy Within λ /6*2
Effective area(FA) Ref table
Coating Aluminum
Scratches & Digs 80-50(as per MIL-O-13830A)
Thermal and Humidity Conditions for Storage 0°C to 50°C,50% RH max.(no conensation) *When temperature is from 0°C to 40°C,humidity should be 80% RH max.

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(*1):Paraboloidal surface is formed by resin.
(*2):λ =632.8nm

Schematic Diagram

Schematic DiagramSchematic Diagram
  • Paraboric Mirrors other than standard products are available
  • Specifications are subject to change without notice for improvement.
  • OEM prices are also available. Please contact Shimadzu for details.

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