Photo sensor array using controlled motion

Patent No. 8,125,545

Issued: February 28, 2012
Filed: October 14, 2008

Inventors: Hablutzel; Robert P (West Hartford, CT)
Assignee: International Business Machines Corporation (Armonk, NY)

A movable sensor including a plurality of photo pixel sites arranged in an array comprising a photo sensor and a neutral density filter filtering the photo sensor. Each of the neutral density filters have a density value that are graduated over a range of densities. The sensor is linearly movable across an image. Each point in the image is exposed to at least one pixel site with the graduated density values and each of the photo pixel sites of the array is exposed to a same light input during a time span of exposure, such that the image is captured at a defined range of exposure values and can be combined into a single high dynamic range image.

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