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http://dx.doi.org/10.3807/KJOP.2004.15.5.429

Evaluation of optical properties for the development of high resolution ophthalmic endoscope  

Lee Bongsoo (School of Biomedical Engineering, College of Medicine, Konkuk University)
Cho Dong Hyun (School of Biomedical Engineering, College of Medicine, Konkuk University)
Kim Sin (Department of Nuclear and Energy Engineering, College of Engineering, Cheju National University)
Cho Hyosung (Department of Radiation Science, Institute of Health Science, Yonsei University)
Publication Information
Korean Journal of Optics and Photonics / v.15, no.5, 2004 , pp. 429-434 More about this Journal
Abstract
An ophthalmic endoscope which is used in medical applications should have the total diameter less than 1 mm. Its image resolution is limited to 30∼40 lp/mm. Therefore, the image resolution is one of the most important factors to decide image quality of the ophthalmic endoscopic images. This study obtained high resolution and magnifying ophthalmic endoscopic images by a new optical design using a 0.23 pitch GRIN lens and high resolution fiber-optic image guide which has less than 5 ${\mu}{\textrm}{m}$ diameter microfibers. The resolutions of images from existing and from a new type of ophthalmic endoscope are measured and compared using a USAF resolution target.
Keywords
Ophthalmic endoscope; Image resolution; GRM lens; Fiber-optic image guide;
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