Gradient-index rod lens made by a double ion-exchange process

Gradient-index rod lenses with a parabolic-index profile have been fabricated by a double Na-Ag ion-exchange process, and their optical characteristics have been evaluated. The numerical aperture and minimum focused spot diameter of the 2-mm diam rod lens were 0.58 and 2.5 microm for lambda = 0.63 m...

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Veröffentlicht in:	Applied Optics 1988-02, Vol.27 (3), p.496-499
Hauptverfasser:	OHMI, S, SAKAI, H, ASAHARA, Y, NAKAYAMA, S, YONEDA, Y, IZUMITANI, T
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Lenses, prisms, and mirrors Optical elements, devices, and systems Optics Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Gradient-index rod lenses with a parabolic-index profile have been fabricated by a double Na-Ag ion-exchange process, and their optical characteristics have been evaluated. The numerical aperture and minimum focused spot diameter of the 2-mm diam rod lens were 0.58 and 2.5 microm for lambda = 0.63 microm, respectively. Because of the high diffusing rate for Ag ions, this technique offers the possibility of making large-sized (larger than 10 mm-diam) rod lenses for photographic uses.
ISSN:	0003-6935 1559-128X 1539-4522
DOI:	10.1364/AO.27.000496