The mounting system of lenses in ASPIICS coronagraph

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00469353" target="_blank" >RIV/61389021:_____/16:00469353 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24210/16:00000655

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2257230" target="_blank" >http://dx.doi.org/10.1117/12.2257230</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2257230" target="_blank" >10.1117/12.2257230</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The mounting system of lenses in ASPIICS coronagraph

Popis výsledku v původním jazyce

This article describes the mounting system of lenses in a coronagraph ASPIICS (Association of Spacecraft for Polarimetric Imaging Investigation of the Corona of the Sun). ASPIICS is developed and produced in cooperation of twenty partners from seven countries. It is a part of the ESA's PROBA-3 mission, which includes a formation flight of a pair of satellites at orbit. Coronagraph itself consists of three objectives, where the last one is composed by one objective tube for each lens plus holder and Lyot stop. To achieve high accuracy of mounting of the individual lenses, it was necessary to achieve tight geometric and dimensional tolerances for manufacturing of the objectives barrels. In order to minimize the stress and to prevent the displacement of the lens from ideal position during a temperature change on orbit, an athermal solution was proposed. This is achieved by inserting a Teflon ring of a suitable thickness between the lens surface, objective barrel and the spring washer with a precisely defined contact force. It was necessary to find a suitable technological process of manufacturing, because of the specific behavior of PTFE during turning and complex design of other parts. All parameters of mounting system were repeatedly verified by a thermo mechanical analysis in FEM software, based on te sts of real parts.

Název v anglickém jazyce

The mounting system of lenses in ASPIICS coronagraph

Popis výsledku anglicky

This article describes the mounting system of lenses in a coronagraph ASPIICS (Association of Spacecraft for Polarimetric Imaging Investigation of the Corona of the Sun). ASPIICS is developed and produced in cooperation of twenty partners from seven countries. It is a part of the ESA's PROBA-3 mission, which includes a formation flight of a pair of satellites at orbit. Coronagraph itself consists of three objectives, where the last one is composed by one objective tube for each lens plus holder and Lyot stop. To achieve high accuracy of mounting of the individual lenses, it was necessary to achieve tight geometric and dimensional tolerances for manufacturing of the objectives barrels. In order to minimize the stress and to prevent the displacement of the lens from ideal position during a temperature change on orbit, an athermal solution was proposed. This is achieved by inserting a Teflon ring of a suitable thickness between the lens surface, objective barrel and the spring washer with a precisely defined contact force. It was necessary to find a suitable technological process of manufacturing, because of the specific behavior of PTFE during turning and complex design of other parts. All parameters of mounting system were repeatedly verified by a thermo mechanical analysis in FEM software, based on te sts of real parts.

Druh

D - Stať ve sborníku

CEP obor

JV - Kosmické technologie

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1206" target="_blank" >LO1206: Moderní optické systémy a technologie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of SPIE 10151, Optics and Measurement International Conference 2016

ISBN

978-1-5106-0753-8

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

SPIE, Society of Photo-Optical Instrumentation Engineers

Místo vydání

Bellingham

Místo konání akce

Liberec

Datum konání akce

11. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000393154700031