HIGHLY ACCURATE FLATNESS AND PARALLELISM IN THE MANUFACTURE OF THIN SAPPHIRE FLAT LENSES

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28241

Title:	HIGHLY ACCURATE FLATNESS AND PARALLELISM IN THE MANUFACTURE OF THIN SAPPHIRE FLAT LENSES
Authors:	CHANG,RS;CHERN,DC
Contributors:	光電科學研究所
Date:	1994
Issue Date:	2010-06-29 19:44:44 (UTC+8)
Publisher:	中央大學
Abstract:	Electro-optic products sometimes require sapphire plate tenses of high quality that are highly accurate in terms of flatness and parallelism and are in a scratch-free condition. This is difficult to achieve by conventional methods (for example, with a general polishing machine, single-sided polishing machine, etc.). In addition, the preparation of the laps and the lapping process are inconvenient and time consuming. We have designed a new method for lapping sapphire flat lenses that is based on the mechanism of the correction of a double-sided lapping machine's lapping plate and the measurement of highly accurate parallelism by means of lateral shearing interference. This method can accurately and efficiently lap extremely hard sapphire flat lenses.
Relation:	OPTICAL ENGINEERING
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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