A 4 bit digital liquid lens for variable focal length

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dc.contributor.authorLee, Dong Wooko
dc.contributor.authorCho, Young-Hoko
dc.date.accessioned2013-03-11T18:54:55Z-
dc.date.available2013-03-11T18:54:55Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-03-
dc.identifier.citationJOURNAL OF MICROMECHANICS AND MICROENGINEERING, v.20-
dc.identifier.issn0960-1317-
dc.identifier.urihttp://hdl.handle.net/10203/99986-
dc.description.abstractWe present a 4 bit digital liquid lens for variable focal length using a 4 bit actuator (b(1), b(2), b(3) and b(4) bit actuators). The 4 bit actuator, where 1, 2, 4 and 8 unit pneumatic actuators are serially connected with binary-combination, pushes a discrete fluidic volume into the lens in 2(4) different levels. Thus, the 4 bit digital actuation mode (b(4)b(3)b(2)b(1)) from (0000) to (1111) makes 2(4) different levels of lens curvature and focal length. Experimentally, we verify that the 4 bit actuator pushes the volume of 0.074 nl +/- 0.02 nl to the lens per one bit and changes the focal length from 3.63 mm to 38.6 mm in 16 levels. The present 4 bit digital liquid lens performs the focal length variation without requiring high-cost controllers or sensors for precise control of the pressure or fluidic volume, thus it is suitable for use in integrated optical systems.-
dc.languageEnglish-
dc.publisherIOP PUBLISHING LTD-
dc.titleA 4 bit digital liquid lens for variable focal length-
dc.typeArticle-
dc.identifier.wosid000275331300029-
dc.identifier.scopusid2-s2.0-77749333170-
dc.type.rimsART-
dc.citation.volume20-
dc.citation.publicationnameJOURNAL OF MICROMECHANICS AND MICROENGINEERING-
dc.identifier.doi10.1088/0960-1317/20/3/035029-
dc.contributor.localauthorCho, Young-Ho-
dc.type.journalArticleArticle-
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