LENS FOR HOLOGRAPHIC SYSTEMS Russian patent published in 1999 - IPC

FIELD: optical measurements. SUBSTANCE: lens for holographic systems has concentric spherical meniscus and biconvex lens so placed on one optical axis in homogeneous medium that their principal optical axes coincide. In this case examined object is located in front focal plane of lens and radiation detector is positioned in rear one. Source of coherent light situated at will illuminates examined object. Thanks to this each point of examined object is source of secondary waves. Concentric spherical meniscus functions as multi- beam interferometer and biconvex lens throws image of obtained interference picture on radiation detector. Lens for holographic systems makes it feasible to generate holographic image of examined object recording both phase and amplitude components of signal. Matrix of photosensitive elements based on charge-coupled devices with high resolving power is chosen in the capacity of radiation detector. EFFECT: generation of high-quality holographic image, simplified design and reduced dimensions of lens. 1 cl, 1 dwg