Substitute for missing qr

Abstract

Abstract AN IMAGING SYSTEM INCLUDING AN IMAGING MEMBER IN WHICH IMAGES HAVING IMAGE AND BACKGROUND AREAS WHICH OPTICALLY AFFECT INCIDENT LIGHT DIFFERENTLY IN SOME RESPECT SUCH AS, FOR EXAMPLE, OPTICAL ROTATION, RETARDATION, DICHROSIM, ETC. ARE FORMED. THE IMAGES ARE READ OUT IN REFLECTION BY AN OPTICAL READOUT SYSTEM AS DESCRIBED IN THE FIGURE WHICH INCLUDES A READOUT LIGHT SOURCE IS A COLLIMATING LENS 20, A CORRECTION PRISM 22 ARRANGED ADJACENT TO THE IMAGING MEMBER AND ADAPTED SO THAT THE ANGLE OF INCIDENCE OF THE READOUT ILLUMINATION TO THE FRONT SURFACE OF THE PRISM IS SUCH THAT IT RESULTS IN TOTAL INTERNAL REFLECTANCE AND A FIELD LENS 24 WHICH COLLECTS THE INFORMATION-MODULATED ILLUMINATION FOCUSES IT AT AN OUTPUT IMAGE PLANE 26. PREFERABLY, THE READOUT ILLUMINATION IS NORMAL TO THE SIDE SURFACE OF THE PRISM AND THE INFORMATION-MODULATED ILLUMINATION EXIST NORMAL OF THE FRONT SURFACE OF THE PRISM. IN A PREFERRED EMBODIMENT THE IMAGED MEMBER COMPRISES AN OPTICALLY NEGATIVE LIQUID CRYSTALLINE LAYER HAVING AREAS IN THE GRANDJEAN TEXTURE AND AREAS IN THE FOCAL-CONIC TEXTURE. A PREFERRED IMAGING MEMBER 10 COMPRISES A PAIR OF ELECTRODES AT LEAST ONE OF WHICH IS TRANSPARENT SANDWICHED AROUND A LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL AND A LAYER OF AN OPTICALLY NEGATIVE LIQUID CRYSTALLINE MATERIAL.

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