INFRARED RADIATION LIMITER Russian patent published in 2004 - IPC

FIELD: optics.

SUBSTANCE: device has positive lens and a mirror in front of said lens. On front surface of lens a non-linear optical element is applied in form of film of vanadium dioxide, and on back portion of lens a reflective cover is applied with an aperture in central portion. Vanadium dioxide film on front surface of lens may be applied with aperture in central portion, in which a mirror is placed in form of deflector cover, and on back surface of lens may be applied a reflective cover with an aperture in central portion, in which a second film of vanadium dioxide is placed.

EFFECT: lesser dimensions and weight of limiter as well as higher precision of supporting of temperature of non-linear optical element.

2 cl, 2 dwg