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Proceedings Paper

Application of a diffractive/refractive hybrid lens for a night-vision relay lens system
Author(s): Young Ghi Hong; Young Joon Kim; Chul Koo Lee
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Paper Abstract

Night-vision relay lens system with a diffractive/refractive hybrid lens which relays the image between the phosphor image plane of an image intensifying tube and a 35 mm film single-lens reflex camera was designed and made. The optical system consists of 5 lenses including 1 diffractive/refractive hybrid lens, whereas the conventional all refractive lens system has 7 lenses. After design and manufacture we compared the optical performances of both two lens systems. Since diffractive/refractive hybrid lens has an excellent feature to correct chromatic aberrations in the broad bandwidth visible spectral region, we could obtain the much higher resolution and better image quality from the lens system with the hybrid lens than those from the conventional lens system. The diffractive surface was fabricated with photolithographic methods to get 8 leveled zone structure and its micro profiles were inspected with scanning electron microscopy and atomic force microscope.

Paper Details

Date Published: 18 June 1998
PDF: 10 pages
Proc. SPIE 3291, Diffractive and Holographic Device Technologies and Applications V, (18 June 1998);
Show Author Affiliations
Young Ghi Hong, Samsung Aerospace Industries Ltd. (Canada)
Young Joon Kim, Samsung Aerospace Industries Ltd. (Japan)
Chul Koo Lee, Samsung Aerospace Industries Ltd. (South Korea)

Published in SPIE Proceedings Vol. 3291:
Diffractive and Holographic Device Technologies and Applications V
Ivan Cindrich; Sing H. Lee, Editor(s)

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