INTEGRATED OPTICAL MODULE AND OPTICAL PICKUP

INTEGRATED OPTICAL MODULE AND OPTICAL PICKUP

PROBLEM TO BE SOLVED: To provide an integrated optical module and optical pickup that can reduce shift of an optical axis due to temperature changes. SOLUTION: This integrated optical module and optical pickup use, for the material of the holder 26, zirconia having a linear expansion coefficient clo...

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Bibliographische Detailangaben
Hauptverfasser: SHIMOZAWA RYOSUKE, UMEZAKI TAKESHI
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide an integrated optical module and optical pickup that can reduce shift of an optical axis due to temperature changes. SOLUTION: This integrated optical module and optical pickup use, for the material of the holder 26, zirconia having a linear expansion coefficient close to the borosilicate glass BK7 which is the material of the prism 23 and satisfying the relation of α1-α2