Lyot stop

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A Lyot[1] stop is an optic stop, invented by French astronomer Bernard Lyot, that reduces the amount of flare caused by diffraction of other stops and baffles in optical systems.

Lyot Stop is located at the image of the objective formed by a field lens, with an aperture slightly smaller than the objective image. Example of applications can be found in Ref.[2]

See also[edit]


  1. ^ Lyot, Bernard (1939). "The Study of the Solar Corona and Prominences without Eclipses (George Darwin Lecture, delivered by M. Bernard Lyot, Assoc.R.A.S., on 1939 May 12)". Monthly Notices of the Royal Astronomical Society. 99: 580–594. Bibcode:1939MNRAS..99..580L. doi:10.1093/mnras/99.8.580. 
  2. ^ "The near-infrared camera SWIRCAM". Retrieved 25 December 2012. 

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