NDLI: A gazing point distance detection system for accommodation assisting glasses

Content Provider	IEEE Xplore Digital Library
Author	Fujita, T. Sato, S. Idesawa, M.
Copyright Year	2002
Description	Author affiliation: California Univ., Berkeley, CA, USA (Fujita, T.)
Abstract	Proposes a gazing point distance detection system which is one of the important key issues in order to realize accommodation assisting glasses, automatic focusing glasses which can assist eye focusing for aged persons who suffer from presbyopia. The new system has a tunnel type light path device which consists of very narrow tunnels with the opening of a vertically long rectangle. The tunnels are arranged horizontally on the photosensitive device which is located in front of each eye and embedded in the glass. By this structure, this device can detect the light from one horizontal position only on the eye at the corresponding position on the photosensitive device. Therefore, the center of gravity of iris for each eye can be detected, and then the horizontal direction of line of sight can be calculated. As the photosensitive device, we propose dark image position sensitive device (D-PSD). A prototype system using the tunnel type light path device has been manufactured experimentally. From the result of experiments for evaluating detecting characteristics, it was confirmed that proposed technology in this study was useful for realization of the accommodation assisting glasses for presbyopia.
Sponsorship	IEEE Sensor Council
Starting Page	905
Ending Page	910
File Size	558581
Page Count	6
File Format	PDF
ISBN	0780374541
DOI	10.1109/ICSENS.2002.1037229
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Glass Lenses Vision defects Focusing Aging Automatic control Gravity Iris Manufacturing Position sensitive particle detectors
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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