Optical arrangement for imaging object scene on detector unit, has lens which consists of two optical units, and optical filter, where lens is telecentric and filter is arranged in intermediate level between optical units

摘要

The optical arrangement (2) has a lens (4) which consists of two optical units (6,8), and an optical filter (16). The lens is telecentric and the filter is arranged in an intermediate level between the optical units. The optical filter is a polarizing filter or a non-linear optical filter or a color filter. A cooling cover (24) is provided for shielding a detector unit (18) from thermal radiation.