公开(公告)号：US3569709A

公开(公告)日：1971-03-09

申请号：US3569709D

申请日：1968-03-27

Applicant: OPTICAL COATING LABORATORY INC

Inventor： WANK MARTIN R

IPC: G02B23/12 ,  G02F1/133 ,  G01J1/48

CPC classification number: G02F1/132 ,  G02B23/12

Abstract: A thermal imaging system wherein an infared transmitting lens forms an image of an object from infared rays emitted by the object and projects the image on a film of liquid crystal material having a thermally responsive color spectrum. The film of liquid crystal material is heat biased to the characteristic temperature range at which the material exhibits thermally sensitive optical scattering properties to accentuate the thermally evoked image.