Design and evaluation of a Blu-ray pickup head system for determining the tilt angle and displacement of the test plane

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/51021

Title:	Design and evaluation of a Blu-ray pickup head system for determining the tilt angle and displacement of the test plane
Authors:	Sun,WS;Tien,CL;Chung,TY;Lin,YN;Lee,JY;Hsieh,DY;Lin,TW
Contributors:	光電科學與工程學系
Keywords:	DISC PICKUP;PROFILOMETER
Date:	2011
Issue Date:	2012-03-27 18:15:44 (UTC+8)
Publisher:	國立中央大學
Abstract:	We present an optical system design for determining the tilt angle and displacement of the test plane. The proposed optical system consists of a Blu-ray pickup head and a pigtailed laser diode with a uniform Gaussian beam. The optical system is evaluated by two optical design software packages, Code V and LightTools. A quadrant detector is used to detect the relative relationship of the V(A), V(B), V(C) and V(D) output signals, which can be used to measure the tilt angle and displacement on the test plane. Both the tilt angle and displacement on the test plane can be determined from the change in the beam shape on the quadrant detector. The proposed system can generate a circular uniform beam shape to reduce the misjudgment and to enhance the measurement accuracy. Various simulation cases are presented in detail to show the feasibility of the proposed system. (C) 2011 Elsevier Ltd. All rights reserved.
Relation:	OPTICS AND LASERS IN ENGINEERING
Appears in Collections:	[Department of Optics and Photonics] journal & Dissertation

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