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Proceedings Paper

S/N improvement for the optical-multiplex image-acquisition system
Author(s): Tadakuni Narabu
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Paper Abstract

The optical-multiplex system is comprised of an image sensor, a multi-lens array and signal processing unit. The key feature of the optical-multiplex system is that each pixel of the image sensor captures multiple data of the object through multi-lenses and the object data is obtained by processing the raw data output from the optical-multiplex image sensor. We are now able to report that our system can improve the signal-to-noise ratio of the image output from the opticalmultiplex system by changing the shading characteristics of the multi-lenses in the optical-multiplex system. In a model of the system for simulation purposes, an optical-multiplex system with five lenses is used. The five lenses are located at the center, upper, lower, left and right above an image sensor. We calculate the signal-to-noise ratio of the image output from the optical-multiplex system by changing the shading characteristics of the four lenses located at the upper, lower, left and right. The best signal-to-noise ratio of this image output by the optical-multiplex system is 8.895 dB better than that of a camera with a single lens. This value is beyond the previous report value of 3.764 dB.

Paper Details

Date Published: 15 February 2012
PDF: 6 pages
Proc. SPIE 8298, Sensors, Cameras, and Systems for Industrial and Scientific Applications XIII, 82980Y (15 February 2012); doi: 10.1117/12.907272
Show Author Affiliations
Tadakuni Narabu, Sony Corp. (Japan)


Published in SPIE Proceedings Vol. 8298:
Sensors, Cameras, and Systems for Industrial and Scientific Applications XIII
Ralf Widenhorn; Valérie Nguyen; Antoine Dupret, Editor(s)

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