Optical waveguides – Optical fiber bundle – Imaging
Patent
1997-06-17
1999-08-24
Ngo, Hung N.
Optical waveguides
Optical fiber bundle
Imaging
385121, 385 89, 385 93, 385 33, G02B 604
Patent
active
059434635
ABSTRACT:
A color image sensor has a white fluorescent tube as a light source, a microlens array with three rows of microlenses arranged vertically, a three-layer optical waveguide array and a three-line color CCD with color filters. The waveguides in each waveguide array layer are bent so that the interval between successive waveguides becomes narrower from the input end toward the output end. The three-line color CCD has three lines of light-receiving elements (photodiodes) as the light sensing portion. These lines in the light-receiving element array are arranged vertically at the same intervals as the waveguide layers are arranged. Further, a cylindrical lens is attached to cover the microlens array. Because of the presence of this cylindrical lens, the images of light beams incident on different microlenses of the microlens array corresponding to different waveguide layers are the same image from an identical area on the original.
REFERENCES:
patent: 5061036 (1991-10-01), Gordon
patent: 5136674 (1992-08-01), Kakiuchi et al.
patent: 5655043 (1997-08-01), Davies et al.
patent: 5815624 (1998-09-01), Rosenberg
Arai Hisako
Fujimoto Manabu
Heard David
Kataoka Teruyuki
Miyata Akio
Ngo Hung N.
Sharp Kabushiki Kaisha
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