High-speed access mechanism for 90 mm 1-inch-high optical disk drive

A 90 mm, 1-inch-high optical disk drive with a 17-mm-high mechanism and a 27 ms seek time was developed using a separated optical system with an improved galvanomirror. This optical layout reduced the weight of the movable optical part to 7 g. The maximum acceleration of 127 m/s 2 was driven by 8 W....

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Published inJPN J APPL PHYS PART 1 REGUL PAP SHORT NOTE REV PAP Vol. 32; no. 11B; pp. 5381 - 5384
Main Authors TAKIZAWA, T, SHINODA, M, WAKABAYASHI, K, TAKAMINE, K, IKAWA, Y, GOTOH, Y, SATOH, I
Format Conference Proceeding Journal Article
LanguageEnglish
Published Tokyo Japanese journal of applied physics 01.11.1993
Subjects
Applied sciences
Electronics
Exact sciences and technology
Magnetic and optical mass memories
Storage and reproduction of information
Design
Optical system
Optical disk
Tracking
Performance characteristic
Optical memory
Drive mechanism
Storage access
Hysteresis
Actuator
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Summary:A 90 mm, 1-inch-high optical disk drive with a 17-mm-high mechanism and a 27 ms seek time was developed using a separated optical system with an improved galvanomirror. This optical layout reduced the weight of the movable optical part to 7 g. The maximum acceleration of 127 m/s 2 was driven by 8 W. The major component parts of the galvanomirror, such as the mirror holder and base, were made of anisotropic liquid-crystalline polymer. The use of this material, which has high rigidity and low thermal expansion, resulted in optical spot drifting due to mirror rotation of less than 3 µm from room temperature to 65°C.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.32.5381