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Proceedings Paper

Position-sensitive receptive fields based on photoluminescent concentrators
Author(s): Paul Jungwirth; Ivan S. Melnik; Andrew H. Rawicz
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Paper Abstract

Thin-film luminescent concentrators were studied as novel position sensitive optoelectronic devices. The concentrators were designed as a 16 X 16 lines grid or as a planar structure of 16 X 16 channels along two coordinates. Minimal distance between two lines in grid concentrators was 5 mm. Each line or channel was coupled to silicone photodiode which was connected via analog board and C/D converter to computer. 100-W halogen lamp was projected into concentrators via optical system. Software was developed to determine the center of the light spot and to show its border. Position of the center of the light source was determined with accuracy 0.5 mm. Processing time for this operation was less than 1 ms. The concentrators were able to detect the position of the light source under conditions which were similar to peripheral human vision. Such position sensitive optoelectronics device are promising to build smaller scale integrated device which could be perform of full detection and preprocessing operation in artificial human retina.

Paper Details

Date Published: 1 January 1998
PDF: 9 pages
Proc. SPIE 3199, Biomedical Systems and Technologies II, (1 January 1998); doi: 10.1117/12.301111
Show Author Affiliations
Paul Jungwirth, Lightwave Medical Industries Ltd. (Canada)
Ivan S. Melnik, Simon Fraser Univ. (Canada)
Andrew H. Rawicz, Simon Fraser Univ. (Canada)

Published in SPIE Proceedings Vol. 3199:
Biomedical Systems and Technologies II
Francesco Baldini; Nathan I. Croitoru; Mark Russell Dickinson; Martin Frenz; Mitsunobu Miyagi; Riccardo Pratesi; Stefan Seeger, Editor(s)

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