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Laser Plane Interferometers

 

 

Introduction
Fizeau interferometer is a precise instrument based on equal thickness interferometer, which can detect the surface shape of optical elements, the wavefront aberration of optical lens and the homogeneity of optical materials. The measurement accuracy is generally 1/10-1/100, which is the average wavelength of the light source for detection.
 
  Technical data
Tesr Type:Fizeau interferometry
Test Beam:Φ60mm
Test Wavelength:635nm(Semiconductor laser)
Alignment:Simple two spot alignment
Alignment View:±0.5degrees
Reference mirror:PV: λ/20
Spherical reference mirror:PV: λ/10