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http://dx.doi.org/10.7736/KSPE.2012.29.12.1290

Design of Myopic Aspherical Ophthalmic Lenses with Peripheral Clear Vision and Properties of Its Ultra-Precision Machining  

Kim, Dong-Ik (Korea Basic Science Institute)
Huh, Myeng-Sang (Korea Basic Science Institute)
Lee, Gil-Jae (Korea Basic Science Institute)
Park, Soon-Sub (Korea Institute of Industrial Technology)
Won, Jong Ho (Div. of Mechanical Engineering, Chung-Nam Univ.)
Kim, Geon Hee (Korea Basic Science Institute)
Publication Information
Journal of the Korean Society for Precision Engineering / v.29, no.12, 2012 , pp. 1290-1295 More about this Journal
Abstract
Oblique astigmatism according to the rotation of the eye has to be removed for obtaining peripheral clear vision in ophthalmic lenses. For this reason, we calculated tangential and sagittal power using third-order approximation theory and then controlled conic constant for the difference of the two powers to converge to 0 regardless of the rotation angle of the eye. As a result, an aspherical ophthalmic lens without oblique astigmatism was designed. Also, we found optimal machining condition to the lens material using factorial design and finally fabricated the designed lens through ultra-precision machining with that condition.
Keywords
Third-Order Approximation; Oblique Astigmatism; Factorial Design; Ultra-Precision Machining;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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