Design of Double Cassegrain reflective mirrors for optical system of IR cameras

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28054

Title:	Design of Double Cassegrain reflective mirrors for optical system of IR cameras
Authors:	Chang,R;Wang,SW;Chien,PH
Contributors:	光電科學研究所
Date:	2009
Issue Date:	2010-06-29 19:40:59 (UTC+8)
Publisher:	中央大學
Abstract:	IR optical systems such as Petzval doublet refractive lenses or Cassegrain reflective mirrors are either expensive or poor in image quality. Taking advantage of the low cost of reflective mirrors, here we present an optical design of Double Cassegrain reflective mirrors consisting of two sets of Cassegrain reflectors facing each other symmetrically. This symmetry also cancels many aberrations besides the chromatic aberration-free nature of reflective mirrors. Design results show that this system is better than Cassegrain reflectors in aberration correction and image resolution, but cheaper than Petzval doublet refractive lenses systems in price. IR cameras with this optical system could be widely used for body temperature measurement and security check.
Relation:	OPTICAL REVIEW
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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