CMOS image sensor with off-center circular apertures for depth extraction

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A CMOS image sensor with off-center circular apertures for two-dimensional (2D) and three-dimensional (3D) imaging was fabricated, and its performance was evaluated, including the results of 2D and 3D images. The pixel size, based on a four-transistor active pixel sensor with a pinned photodiode, is 2.8 mu m x 2.8 mu m. Disparate images as well as focused images for depth calculation can be obtained using the designed pixel pattern. The pixel pattern is composed of one white subpixel with a left-offset circular aperture, a blue pixel, a red pixel, and another white subpixel with a right-offset circular aperture. The proposed technique was verified by simulation and measurement results using a point light source. In addition, the depth image was implemented by calculating the depth information from the 2D images.
Publisher
SPIE-INT SOC OPTICAL ENGINEERING
Issue Date
2019-04
Language
English
Citation

Conference on Image Sensing Technologies - Materials, Devices, Systems, and Applications VI

ISSN
0277-786X
DOI
10.1117/12.2518802
URI
http://hdl.handle.net/10203/274961
Appears in Collection
RIMS Conference Papers
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