CAMERA OPTICAL MODULE OF ATHERMALIZATION FAR INFRARED

摘要

The present invention relates to a camera optical module for non-thermalization far-infrared rays as a far-infrared camera optical system, including: a first lens as a diffractive optical element applied with non-thermalization to minimize the focal distance variations against the temperature variations and as a meniscus lens molded to have a first surface to be convex toward an object; a second lens applied with non-thermalization to minimize the focal distance variations against the temperature variations as a meniscus lens molded to have a third surface facing the first lens to be convex toward the first lens; and a far-infrared filter placed in the rear side of the second lens to allow only far-infrared rays among incident rays to pass through. The camera optical module for non-thermalization far-infrared rays is capable of detecting living thins or objects in a long distance and is applicable to various fields (a night guard, a CCTV for crime prevention, and the like).