Fusible link actuators for deformable mirrors

Fusible link actuators for deformable mirrors

A construction for a deformable mirror is disclosed in which each of the electrodistortive actuators used to selectively impart deformations to the mirror's reflecting facesheet are mechanically fastened to the facesheet and may be disengaged from the facesheet by operating a fusible link. In o...

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Hauptverfasser: EALEY, MARK A, WELLMAN, JOHN A
Format: Patent
Sprache:eng
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OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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creator EALEY
MARK A
WELLMAN
JOHN A
description A construction for a deformable mirror is disclosed in which each of the electrodistortive actuators used to selectively impart deformations to the mirror's reflecting facesheet are mechanically fastened to the facesheet and may be disengaged from the facesheet by operating a fusible link. In one preferred embodiment the fusible link consists of a layer of thermoplastic material covering an electrical resistive element located between the top of the actuator and the point on the facesheet at which the actuator is mechanically bonded to the facesheet. Heat generated by the resistive element may be used to melt the thermoplastic material fastening the actuator to the facesheet. The second preferred embodiment provides a fusible link consisting of an electrocapacitive layer sandwiched between two electrically-conducting layers. When an electrical signal is applied to the two chemical conducting layers, the electrocapacitive layer is mechanically severed from the actuator, thereby permitting the actuator to be removed from contact with the facesheet.
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In one preferred embodiment the fusible link consists of a layer of thermoplastic material covering an electrical resistive element located between the top of the actuator and the point on the facesheet at which the actuator is mechanically bonded to the facesheet. Heat generated by the resistive element may be used to melt the thermoplastic material fastening the actuator to the facesheet. The second preferred embodiment provides a fusible link consisting of an electrocapacitive layer sandwiched between two electrically-conducting layers. When an electrical signal is applied to the two chemical conducting layers, the electrocapacitive layer is mechanically severed from the actuator, thereby permitting the actuator to be removed from contact with the facesheet.</description><language>eng</language><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PHYSICS</subject><creationdate>1991</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=19910806&amp;DB=EPODOC&amp;CC=US&amp;NR=5037190A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19910806&amp;DB=EPODOC&amp;CC=US&amp;NR=5037190A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>EALEY; MARK A</creatorcontrib><creatorcontrib>WELLMAN; JOHN A</creatorcontrib><title>Fusible link actuators for deformable mirrors</title><description>A construction for a deformable mirror is disclosed in which each of the electrodistortive actuators used to selectively impart deformations to the mirror's reflecting facesheet are mechanically fastened to the facesheet and may be disengaged from the facesheet by operating a fusible link. 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When an electrical signal is applied to the two chemical conducting layers, the electrocapacitive layer is mechanically severed from the actuator, thereby permitting the actuator to be removed from contact with the facesheet.</description><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</subject><subject>OPTICS</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1991</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNB1Ky3OTMpJVcjJzMtWSEwuKU0syS8qVkjLL1JISQWSuYkg2dzMoiKgMA8Da1piTnEqL5TmZpB3cw1x9tBNLciPTy0uSExOzUstiQ8NNjUwNje0NHA0JqwCAD_zKcQ</recordid><startdate>19910806</startdate><enddate>19910806</enddate><creator>EALEY; MARK A</creator><creator>WELLMAN; JOHN A</creator><scope>EVB</scope></search><sort><creationdate>19910806</creationdate><title>Fusible link actuators for deformable mirrors</title><author>EALEY; MARK A ; WELLMAN; JOHN A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5037190A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1991</creationdate><topic>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</topic><topic>OPTICS</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>EALEY; MARK A</creatorcontrib><creatorcontrib>WELLMAN; JOHN A</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>EALEY; MARK A</au><au>WELLMAN; JOHN A</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Fusible link actuators for deformable mirrors</title><date>1991-08-06</date><risdate>1991</risdate><abstract>A construction for a deformable mirror is disclosed in which each of the electrodistortive actuators used to selectively impart deformations to the mirror's reflecting facesheet are mechanically fastened to the facesheet and may be disengaged from the facesheet by operating a fusible link. In one preferred embodiment the fusible link consists of a layer of thermoplastic material covering an electrical resistive element located between the top of the actuator and the point on the facesheet at which the actuator is mechanically bonded to the facesheet. Heat generated by the resistive element may be used to melt the thermoplastic material fastening the actuator to the facesheet. The second preferred embodiment provides a fusible link consisting of an electrocapacitive layer sandwiched between two electrically-conducting layers. When an electrical signal is applied to the two chemical conducting layers, the electrocapacitive layer is mechanically severed from the actuator, thereby permitting the actuator to be removed from contact with the facesheet.</abstract><oa>free_for_read</oa></addata></record>
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subjects OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
title Fusible link actuators for deformable mirrors
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