Comparison of Divergence Angle of Retro-Reflectors and Sharpness with Aerial Imaging by Retro-Reflection (AIRR)

Norikazu KAWAGISHI; Kenta ONUKI; Hirotsugu YAMAMOTO

doi:10.1587/transele.E100.C.958

IEICE Transactions on Electronics

Online ISSN : 1745-1353
Print ISSN : 0916-8524

Special Section on Electronic Displays

Comparison of Divergence Angle of Retro-Reflectors and Sharpness with Aerial Imaging by Retro-Reflection (AIRR)

Norikazu KAWAGISHI, Kenta ONUKI, Hirotsugu YAMAMOTO

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Keywords: aerial image, retro-reflector, divergence angle, sharpness, contrast transfer function

JOURNAL FREE ACCESS

2017 Volume E100.C Issue 11 Pages 958-964

DOI https://doi.org/10.1587/transele.E100.C.958

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Abstract

This paper reports on the relationships between the performance of retro-reflectors and the sharpness of an aerial image formed with aerial imaging by retro-reflection (AIRR). We have measured the retro-reflector divergence angle and evaluated aerial image sharpness by use of the contrast-transfer function. It is found that the divergence angle of the retro-reflected light is strongly related to the sharpness of the aerial image formed with AIRR.

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