catflap.org Online Dictionary Query

  Hartmann diaphragm /hˈɑːtmən dˈaɪəfɹˌam/
  Hartmann'sche Blende
   see: diaphragm stop, lens stop, diaphragm, stop, diaphragm stops, lens stops, diaphragms, stops, aperture diaphragm, aperture stop, field stop, flare stop, focussed diaphragm, focused diaphragm, critical diaphragm, critical aperture, lamellar diaphragm, iris diaphragm, pinhole diaphragm, pinhole, pseudo-lens, natural diaphragm, telecentric stop