Showing papers by "Kenichi Iga published in 1977"

Plastic focusing fiber for imaging applications

Abstract: This paper presents a fabrication method and image transmission characteristics of a plastic focusing fiber which is flexible and has a nearly parabolic refractive index distribution. A new fabrication method is given, and the optimum control of index profile has been attained in order to reduce the aberration for imaging. A prototype fiber scope with TV monitor using the plastic fiber was made. Resolving power of 5–6 l/mm was shown to be attainable for fibers 3 mm in diameter and 150 mm in length.