Twyman-Green interferometer with NIR wavelength

Twyman-Green-Interferometer von 4D Technology

  • Wavelength: 1064nm 
  • For telescope optics, large mirrors and optical systems (also in real time) 
  • Vibration-independent dynamic interferometer 
  • Small compact designs  
  • For maximum repeatability and precision 
  • 4MP camera for high-resolution images 
  • Measurements under 30µsec 

Contact person: Mr. Michael Zerbin

The PhaseCam from 4D Technology is a high-precision Twyman-Green interferometer with NIR wavelength that is widely used in science and industry. It is used both for measuring wavefronts and for analyzing optical components. This allows it to detect even the smallest deviations in the optics, thus always ensuring high quality. This makes this laser interferometer an indispensable tool for the optics industry and science.

The PhaseCam offers a high-resolution sensor and simple manual control. Combined with the full-featured analysis software, it delivers impressive performance. Thanks to 4D Technology's patented Dynamic Interferometry® technology, the high-speed phase sensor enables wavefront measurements in less than 30 microseconds. This allows the PhaseCam to be used in almost all conditions without the need for vibration isolation.

The user-friendly "4Sight Focus" software offers an all-round, worry-free package. It makes measuring telescope optics, large mirrors and optical systems much easier. The laser interferometer is versatile because it is suitable for measuring large, focal optics and optical systems, such as concave telescope mirrors and lens systems. It is also ideal for testing afocal components with a small aperture, such as flat mirrors and collimators. In addition, it can also measure adjusting elements such as scanning mirrors.

Interferometer wavelength options

If you want to carry out measurements in clean room conditions, there are specially adapted systems. As standard, this laser interferometer is available with NIR wavelengths of 532 nm and 632.8 nm for the visible range and 1064 nm and 1550 nm for the short-wave infrared range. For special applications, we also offer interferometers with MWIR wavelengths and even options up to 10.6 µm in the long-wave infrared range. This way you can find the right solution for your specific requirements.

Applications

  • concave mirrors 
  • Fast alignment of complex optical systems 
  • Wavefront transmission errors in focal systems (TWE) 
  • Large primary mirrors 
  • Concave secondary mirrors 
  • Segmented mirrors 
  • Cryovac and thermal tests 
  • Adaptive optics 
  • Use in cleanrooms (cleanroom version) 
  • Quality control in production 
  • Electronic Speckle Pattern Interferometry 

data sheet

PhaseCam NIR Data Sheet

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