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DSLR Autofocus Sensor

A close-up view of the light sensor employed by the phase detection autofocus system in the DSLR camera I took apart after its shutter failed. The horizontal and vertical rows of dark rectangles are the light-sensitive elements. Horizontal rows detect vertical edges in the scene, and vertical rows detect horizontal edges.

 

The 5 mm scale bar drawn at the bottom of the frame shows the size of the sensor chip. The resolution of the 4k version of this photo is about 3 µm per pixel.

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Uploaded on November 5, 2024
Taken on November 3, 2024