請用此 Handle URI 來引用此文件: http://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/112049
標題: Wide-field Digital Holography for Ophthalmic Lens Metrology and Its Application in Ocular Vision Correction
Wide-field Digital Holography for Ophthalmic Lens Metrology and Its Application in Ocular Vision Correction
作者: 鄭超仁
Cheng, Chau-Jern
Pragati Shukla
Pragati Shukla
關鍵字: none
Digital Holography
Ophthalmic Lens
Wide Field of View
Telecentric Lens
公開日期: 2020
摘要: none
We have designed a Wide-Field Digital Holography (WF-DH) system for metrology of ophthalmic lenses over the full field of view within a single camera acquisition. For the developed WF-DH system, the reflection wavefront from the object surface is recorded as a digital hologram using a modified Michelson interferometer. The wide-field of view is achieved by employing a telecentric lens geometry. The recorded hologram is reconstructed to obtain the phase of the lens under test and analyzed for measurements. The information obtained is utilized for verifying the vision correction capability of the test lens using ZEMAX simulations. The proposed system is capable of providing precise measurements of Radius of curvature, diameter, thickness and power of lenses with an error of ±1.3%. The measurement is done with non-contact imaging which is different from the current industrial methods like surface contact stylus profilometry or interferometry techniques which utilize reference surface for metrology of optical lenses. Keywords: Digital Holography, Ophthalmic Lens, Wide Field of View, Telecentric Lens.
URI: http://etds.lib.ntnu.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=id=%22G060777030H%22.&%22.id.&
http://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/112049
其他識別: G060777030H
顯示於類別:學位論文

文件中的檔案:
沒有與此文件相關的檔案。


在 DSpace 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。