LIGHT GUIDE, ILLUMINATING DEVICE HAVING THE LIGHT GUIDE, AND IMAGE READING DEVICE AND INFORMATION PROCESSING APPARATUS HAVING THE ILLUMINATING DEVICE
First Claim
1. An information processing apparatus comprising:
- an illumination device provided with a longitudinal light guide, for guiding light introduced from a light source and for emitting the light along a longitudinal side thereof, having a longitudinal reflection member arranged along said light guide for reflecting the light from said light source;
a photoelectric converting device having a plurality of photoelectric conversion elements for reading an image illuminated by said illumination device and for outputting an image signal; and
a processor for processing the image signal output from said photoelectric converting device.
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Accused Products
Abstract
In an illumination device, a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to the area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. An image reading device and an information processing apparatus can also be equipped with the above-mentioned illumination device.
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Citations
2 Claims
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1. An information processing apparatus comprising:
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an illumination device provided with a longitudinal light guide, for guiding light introduced from a light source and for emitting the light along a longitudinal side thereof, having a longitudinal reflection member arranged along said light guide for reflecting the light from said light source; a photoelectric converting device having a plurality of photoelectric conversion elements for reading an image illuminated by said illumination device and for outputting an image signal; and a processor for processing the image signal output from said photoelectric converting device.
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2. An information processing apparatus comprising:
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an illumination device provided with a longitudinal light guide, for guiding light introduced from a plurality of light sources and for emitting the light along a longitudinal side thereof, having a longitudinal reflection member arranged along said light guide for reflecting the light from said plurality of light sources; a photoelectric converting device having a plurality of photoelectric conversion elements for reading an image illuminated by said illumination device and for outputting an image signal; and a processor for processing the image signal output from said photoelectric converting device.
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Specification