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Proceedings Paper

Distance detective small camera module
Author(s): Ichiro Oyama; Tomokuni Iijima; Katsumi Imada; Satoshi Tamaki; Tatsutoshi Suenaga; Norihiro Imamura; Takashi Ota; Masa-aki Suzuki; Michiyoshi Nagashima
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Paper Abstract

Our new type of camera module is small and thin, and is able to detect the distances of objects as well as their images. The module comprises a four-lens array, one imaging sensor and optical filters. The imaging sensor is divided into four areas, two of which are covered with green filters and the other two with infiared filters. A prototype was fabricated with a focal length of 2.63 mm and a baseline length of 2.59 mm. The two images with the same optical filters have parallax, so the distances of objects can be calculated by comparing the two images. We use infrared images illuminated with infrared LEDs at night, and green images during the daytime. After calibrating the images, we achieved a distance-detection accuracy of within ±2.5% at 1 m in spite of the camera's small baseline length. Consequently, our new distance detection camera module is small and thin, and generates a depth-image of an object as well as its image. Our camera module is thus applicable to vehicles, security systems and three-dimensional imaging.

Paper Details

Date Published: 21 February 2007
PDF: 8 pages
Proc. SPIE 6501, Sensors, Cameras, and Systems for Scientific/Industrial Applications VIII, 65010K (21 February 2007); doi: 10.1117/12.703619
Show Author Affiliations
Ichiro Oyama, Matsushita Electric Industrial Co., Ltd. (Japan)
Tomokuni Iijima, Matsushita Electric Industrial Co., Ltd. (Japan)
Katsumi Imada, Matsushita Electric Industrial Co., Ltd. (Japan)
Satoshi Tamaki, Matsushita Electric Industrial Co., Ltd. (Japan)
Tatsutoshi Suenaga, Matsushita Electric Industrial Co., Ltd. (Japan)
Norihiro Imamura, Matsushita Electric Industrial Co., Ltd. (Japan)
Takashi Ota, Matsushita Electric Industrial Co., Ltd. (Japan)
Masa-aki Suzuki, Matsushita Electric Industrial Co., Ltd. (Japan)
Michiyoshi Nagashima, Matsushita Electric Industrial Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 6501:
Sensors, Cameras, and Systems for Scientific/Industrial Applications VIII
Morley M. Blouke, Editor(s)

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