Title :
Development of an adjustment system for optical pickup
Author :
Ahn, Chang-Hoon ; Hong, Yong-Ho ; Dong-Hwal Lee ; Lee, Man Hyung
Author_Institution :
Dept. of Intelligent Mech. Eng., Pusan Nat. Univ., South Korea
fDate :
31 Aug-4 Sep 1998
Abstract :
The optical pickup is the major part of the CD-ROM drive. For the optical pickup to have good characteristics, adjustment is needed. Therefore for the adjustment of the optical pickup, a system must be devised which has the precision mechanism, servo drive and measurement circuit unit characteristics of a CD-ROM drive and which can also perform an adjustment function as well. The mechanism part must be designed so that the clamping and unclamping of the CD and the work, that is, the optical pickup is easy to use. It is also equipped with the adjustment bit driver to align optical elements. The circuit part must have the pickup servo drive and a robust structure. It must also have a specified measurement circuit module for adjustment. This paper shows the development of the system for the adjustment of an optical pickup
Keywords :
CD-ROMs; compensation; disc drives; electric actuators; measurement systems; optical elements; pick-ups; servomechanisms; CD clamping; CD unclamping; CD-ROM drive; adjustment bit driver; adjustment system; auto power control; focusing servo; measurement circuit module; measurement circuit unit characteristics; optical elements alignment; optical pickup; phase compensation; pickup servo drive; precision mechanism; robust structure; servo drive; tracking servo; CD-ROMs; Clamps; Driver circuits; Frequency; Manufacturing; Measurement units; Mechanical engineering; Power control; Servomechanisms; Space technology;
Conference_Titel :
Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE
Conference_Location :
Aachen
Print_ISBN :
0-7803-4503-7
DOI :
10.1109/IECON.1998.722926