OBJECTIVE LENS DRIVER

PURPOSE:To ensure the accurate control of an objective lens by forming the 1st and 2nd parallel grooves having a 90 deg. mutual angle to the support members in both focusing and tracking directions and providing steel balls put with pressure into an elastic member between both parallel grooves. CONS...

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Bibliographic Details
Main Authors MIYAMOTO MITSUNORI, KOUNO TOMOMUNE, TOUFUSA NOBUYUKI, ITOU MASAYUKI, UNNO YUKIO
Format Patent
LanguageEnglish
Published 26.12.1984
Edition3
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PURPOSE:To ensure the accurate control of an objective lens by forming the 1st and 2nd parallel grooves having a 90 deg. mutual angle to the support members in both focusing and tracking directions and providing steel balls put with pressure into an elastic member between both parallel grooves. CONSTITUTION:An objective lens 10 which focuses a light spot to the surface of a disk is welded to a bobbin 11 made of a rigid material. Then mobile coils 12 and 13 for shift in directions F and T respectively are wound fixedly around the bobbin 11. When a current is flowed to the coil 12, the lens 10 is shifted smoothly in the direction F by the 1st parallel grooves 16a and 16b as well as steel balls 17a-17e which are put with pressure into an elastic member. When a current is flowed to the coil 13, the lens 10 is shifted smoothly toward T by the 2nd parallel grooves 18b and 18c and the balls 17a-17e respectively.
Bibliography:Application Number: JP19830105180