Lens cap for optical module, optical module, and method for manufacturing lens cap for optical module

A lens cap for an optical module includes: a barrel of a metal material; and a press lens of glass and held in the barrel. The coefficient of linear expansion of the glass is 6 to 8 ppm/K, and the coefficient of linear expansion of the metal material is at least 10 ppm/K at 150° C. to 800° C. and no...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA KOICHI, MATSUSUE AKIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	A lens cap for an optical module includes: a barrel of a metal material; and a press lens of glass and held in the barrel. The coefficient of linear expansion of the glass is 6 to 8 ppm/K, and the coefficient of linear expansion of the metal material is at least 10 ppm/K at 150° C. to 800° C. and no more than 8 ppm/K at up to 100° C. or below.