Print Email Facebook Twitter Design of a 2DOF eye-scanning device Title Design of a 2DOF eye-scanning device Author Bruining, J.G. Contributor Sponck, J.W. (mentor) Faculty Mechanical, Maritime and Materials Engineering Department Precision & Microsystems Engineering (PME) Date 2017-02-23 Abstract Strabismus, or “crossed eyes”, is a condition in which the eyes do not line up in the same direction when focusing on an object. The DAISY is a device that is designed to measure Strabismus on young children, this has to be done quickly in order to not lose the attention of the child. In order to calibrate the main measuring principle, the visual axis of the good eye needs to be determined. This can be done by taking multiple pictures of the eye from different angles. The focus of this thesis is to find a way to do this within 1 second. A new scanning method that uses a set of lenses of opposite optical power has been developed. The advantages of this method are: Low amount of planar movement required, relatively compact, dynamically balanced and resonant mode motion is possible. Three experiments have shown that this concept indeed works and that the models used to predict the performance are accurate. A 1:5 scale demonstrator has been designed and manufactured in order to test the chosen scanning strategy. The design of the demonstrator also shows a typical design implementation of the proposed concept. It has been shown that the design of the demonstrator can be scaled up to full-scale, making it a viable option to use in the DAISY. Subject StrabismusDAISYOptical scanningLenses To reference this document use: http://resolver.tudelft.nl/uuid:fd1ac83d-d22d-4d6e-89eb-9182937c7cae Embargo date 2019-02-23 Part of collection Student theses Document type master thesis Rights (c) 2017 Bruining, J.G. Files PDF report.pdf 19.15 MB Close viewer /islandora/object/uuid:fd1ac83d-d22d-4d6e-89eb-9182937c7cae/datastream/OBJ/view