The design and fabrication of multiple dichroic beamsplitters for the MIRI spectrometer (4.8-29μm)

  • Martyn Wells, Gary Hawkins, Goran Olofsson
  • October 2004, SPIE
  • DOI: 10.1117/12.551151

Infrared Filters for the JWST Space Telescope

What is it about?

The spectrometer sub-system of the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) contains four channels which spectrally multiplex the incoming radiation.

Why is it important?

The Mid-Infrared Instrument (MIRI) for the JWST is a thermal-infrared imager and spectrometer currently being developed by an international consortium comprising the a consortium of European partners, the European Space Agency, the Jet Propulsion Laboratory, and an international science team.


Dr Gary J Hawkins
University of Reading

This paper describes the design of the dichroics together with a spectral performance model developed to simulate the system spectral throughput for each of the four channels of the MIRI instrument. Details of the spectral design, manufacture, testing and mounting of the dichroics are presented together with the opto-mechanical layout of the instrument.

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The following have contributed to this page: Dr Gary J Hawkins