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Robust Design of an Optical Micromachine for an Ophthalmic Application

Sieber, Ingo; Martin, Thomas; Gengenbach, Ulrich

Abstract (englisch): This article describes an approach to the robust design of an optical micromachine consisting of a freeform optics, an amplification linkage, and an actuator. The robust design approach consists of monolithic integration principles to minimize assembly efforts and of an optimization of the functional components with respect to robustness against remaining assembly and manufacturing tolerances. The design approach presented involves the determination of the relevant tolerances arising from the domains manufacturing, assembly, and operation of the micromachine followed by a sensitivity analysis with the objective of identifying the worst offender. Subsequent to the above-described steps, an optimization of the functional design of the freeform optics with respect to a compensation of the effects of the tolerances is performed. The result leads to a robust design of the freeform optics and hence ensures a defined and optimal minimum performance of the micromachine in the presence of tolerances caused by the manufacturing processes and the operation of the micromachine. The micromachine under discussion is the tunable optics of an ophthalmic implant, an artificial accommodation system recently realized as a demonstration model at a scale of 2:1. The artificial accommodation system will be developed to replace the human crystalline lens in the case of a cataract.

Zugehörige Institution(en) am KIT Institut für Angewandte Informatik (IAI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.3390/mi7050085
ISSN: 2072-666X
URN: urn:nbn:de:swb:90-546649
KITopen ID: 1000054664
HGF-Programm 43.22.03; LK 01
Erschienen in Micromachines
Band 7
Heft 5
Seiten 85
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte robust design; tolerance analysis; freeform optics; optical modeling and simulation; design optimization; ophthalmic implant
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