LUMINOUS FLUX IMAGE FORMATION SURFACE ADJUSTMENT METHOD

PROBLEM TO BE SOLVED: To provide a luminous flux image formation surface adjustment method for easily adjusting an image formation surface and can miniaturize an optical head and reduce its weight. SOLUTION: A collimator lens 200 is arranged in the common light path between a dichroic prism 106 and...

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Bibliographic Details
Main Author EMOTO KENGO
Format Patent
LanguageEnglish
Published 29.09.2000
Edition7
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:PROBLEM TO BE SOLVED: To provide a luminous flux image formation surface adjustment method for easily adjusting an image formation surface and can miniaturize an optical head and reduce its weight. SOLUTION: A collimator lens 200 is arranged in the common light path between a dichroic prism 106 and an objective lens 29, the collimator lens 200 is moved in the direction of a light axis and the luminous flux of one light source 22b is set to parallel light, and a light source 22a is moved in the direction of a light axis so that a surface where the parallel light forms an image by the objective lens coincides with a surface where the luminous flux of the other light source 2a forms an image by the objective lens for adjusting a luminous flux image formation surface.
Bibliography:Application Number: JP19990067140