COLOR VISUALIZER OF FIELDS OF OPTICAL DENSITY Russian patent published in 1998 - IPC

FIELD: color visualization of gradient of two-dimensional distribution of refractive index in gas and condensed media in real time. SUBSTANCE: color visualizer of field of optical density has forming objective with dichromatic slit source in front Fourier plane Fourier-coupled to forming receiving objective in which rear Fourier plane biquad Faucault-Gilbert filter matched with slit source is positioned, videocamera with image processing system and videoregister arranged in series. It is supplemented with second dichromatic slit source orthogonal to first one and optically coupled to biquad Faucault-Gilbert filter, commutator of dichromatic slit sources and synchronizer which output is connected to controlling inputs of commutator of dichromatic slit sources, videoregister and image processing system. EFFECT: enhanced accuracy and stability of color visualizer. 1 dwg