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

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

The invention provides a lens cap for an optical module, an optical module, and a method for manufacturing a lens cap for an optical module which can prevent an optical output variation and secure airtightness. The lens cap for an optical module includes: a barrel of a metal material; and a press le...

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Hauptverfasser: NAKAMURA KOICHI?, MATSUSUE AKIHIRO
Format: Patent
Sprache:eng
Schlagworte:
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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creator NAKAMURA KOICHI?
MATSUSUE AKIHIRO
description The invention provides a lens cap for an optical module, an optical module, and a method for manufacturing a lens cap for an optical module which can prevent an optical output variation and secure airtightness. The 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 DEG C to 800 DEG C and no more than 8 ppm/K at up to 100 DEG C or below.
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The 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 DEG C to 800 DEG C and no more than 8 ppm/K at up to 100 DEG C or below.</description><language>eng</language><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PHYSICS</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150325&amp;DB=EPODOC&amp;CC=CN&amp;NR=104459927A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150325&amp;DB=EPODOC&amp;CC=CN&amp;NR=104459927A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAKAMURA KOICHI?</creatorcontrib><creatorcontrib>MATSUSUE AKIHIRO</creatorcontrib><title>Lens cap for optical module, optical module, and method for manufacturing lens cap for optical module</title><description>The invention provides a lens cap for an optical module, an optical module, and a method for manufacturing a lens cap for an optical module which can prevent an optical output variation and secure airtightness. 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subjects OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
title Lens cap for optical module, optical module, and method for manufacturing lens cap for optical module
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