DICHROIC POLARIZER AND METHOD FOR ITS MANUFACTURING Russian patent published in 2000 - IPC

FIELD: optical instruments. SUBSTANCE: device has film, which has at least one dichroic organic substance, which molecules or fragments of molecules are flat. In addition, at least, some film piece has crystalline structure. Said dichroic substance has at least one maximum of absorption spectral curve in spectral bands 400-700 nm and/or 200-400 nm and 0.7-13 mcm. Method for manufacturing polarizer involves deposition of film with dichroic substance on substrate, application of orienting force to it and drying. Conditions for film deposition and amount of orienting force conform to condition that at least one maximal value on absorption spectral curve in spectral band within 0.7-13 mcm is not less than 0.8. Crystalline structure of at least some film piece is designed as three-dimensional crystal grid, which is shaped by molecules of dichroic organic substance. EFFECT: increased spectral range, improved polarization characteristics. 20 cl, 1 tbl