An optical component formed of a material that blocks noise-causing visible
and near-infrared rays selectively or as a whole while transmitting
far-infrared rays to the extent possible, and a method for producing the
component. The component is produced by adding at least one additive that
blocks visible and near-infrared rays to a ceramic material of ZnS, ZnSe,
or Ge. The component is most suitable for a particular purpose or use of
an optical component, such as a window or lens to be used in a
high-performance infrared apparatus, because noise-causing visible and
near-infrared rays are blocked.
