| 摘要 |
An electrophotographic imaging system and method employs an array of diffusive light sources, a first lens disposed to receive light emitted from two or more of the light sources of the array, an aperture plate disposed to receive light from the first lens, and a second lens disposed to receive the light after passing through the plurality of apertures and to focus the light onto an image plane. An optical scanner system and method employs a first lens disposed to receive light emitted from two or more image pixels on a document; an aperture plate disposed to receive light from the first lens, the aperture plate comprising a plurality of apertures each for passing light emitted by a respective one of the diffusive light sources of the array and for blocking light from other ones of the diffusive light sources; a second lens disposed to receive the light after passing through the plurality of apertures and to focus the light onto an image plane; and a photodetector disposed at the image plane to receive light from the second lens. The aperture plate includes a plurality of apertures each for passing light emitted by a respective one of the diffusive light sources of the array and for blocking light from other ones of the diffusive light sources. The first lens may be achromatic and the second lens may have a structure that eliminates chromatic aberration. The first lens can be cut in first planes at both edges with a distance from an axis of the first lens to make contact surfaces for adjacent first lenses. The first lens can also be cut in second planes orthogonal to the first planes. The array of light sources can comprise an interlaced layout of diffusive light sources, with the first lenses and the apertures arranged in a matching interlaced layout to that of the diffusive light sources.
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