LENS ASSEMBLY FOR OPTICAL RECORDING, HOUSING FRAME THEREOF AND METHOD FOR MANUFACTURING LENS ASSEMBLY FOR OPTICAL RECORDING

LENS ASSEMBLY FOR OPTICAL RECORDING, HOUSING FRAME THEREOF AND METHOD FOR MANUFACTURING LENS ASSEMBLY FOR OPTICAL RECORDING

PROBLEM TO BE SOLVED: To provide a lens assembly for optical recording, where increase in transmitted wave front aberrations is restrained, also an uncured adhesive does not remain, and a lens and a space ring are accurately fixed, and to provide its housing frame and a method for manufacturing the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SAKAI TERUO
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a lens assembly for optical recording, where increase in transmitted wave front aberrations is restrained, also an uncured adhesive does not remain, and a lens and a space ring are accurately fixed, and to provide its housing frame and a method for manufacturing the lens assembly for optical recording. SOLUTION: For this lens assembly for optical recording, where the lens 4 and the space ring 5 are fixed in a transparent lens frame 1 provided with a plurality of through-holes 3 at a cylinder part, a photosetting type adhesive substantially is completely cured by making it irradiated with light from outside of the transparent lens frame.