Lens array, imaging apparatus, and image reading apparatus
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United States of America Patent
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Oct 28, 2014
Grant Date -
Jul 3, 2014
app pub date -
Dec 23, 2013
filing date -
Dec 27, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A lens array including: a plurality of imaging portions arrayed in a first direction; wherein each of the plurality of imaging portions includes a first optical system configured to form an intermediate image of an object and a second optical system configured to re-form the intermediate image of the object in a first cross section parallel to the first direction and a direction of optical axes of the imaging portions, and wherein in each of the plurality of imaging portions, an optical flux from an object height at which a light available efficiency becomes 90% is restricted by at least one of a first aperture surface of the first optical system and a second aperture surface of the second optical system, and the optical flux from an object height at which the light available efficiency becomes 10% is restricted by the aperture surface which restricts the optical flux from the object height at which the light available efficiency becomes 90%.
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