Abstract: Night-vision relay lens system with adiffractive/refractive hybrid lens which relays theimage between the phosphor image plane of an imageintensifying tube and a 35 mm film single-lens reflexcamera was designed and made. The optical systemconsists of 5 lenses including 1 diffractive/refractivehybrid lens, whereas the conventional all refractivelens system has 7 lenses. After design and manufacturewe compared the optical performances of both two lenssystems. Since diffractive/refractive hybrid lens hasan excellent feature to correct chromatic aberrationsin the broad bandwidth visible spectral region, wecould obtain the much higher resolution and betterimage quality from the lens system with the hybrid lensthan those from the conventional lens system. Thediffractive surface was fabricated withphotolithographic methods to get 8 leveled zonestructure and its micro profiles were inspected withscanning electron microscopy and atomic forcemicroscope.!6
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