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4D dynamic laser interferometers enable precision measurement of plano and spherical elements, as well as prisms, corner cubes, aspheres, and optical systems. Production-oriented features make it easy to set up and efficiently test part after part, even in the presence of significant vibration and air turbulence.

Related Products PhaseCam Family FizCam Family 4Sight Analysis Software

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Remote Cavity Measurements

For Fizeau measurements, the "cavity" is the space between the test and reference surfaces. Most phase-shifting Fizeau interferometers require that the reference flat be mechanically translated to acquire the phase data, which usually requires the reference to be physically attached to the interferometer.

4D's FizCam 2000, which employs patented Dynamic Interferometry, does not require the reference to be mechanically translated, so no moving parts or ...

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