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Waveguide Casts CMOS Image Sensors in a New Light

Imec has retained the image plane of conventional CMOS image sensors but replaced the optically inefficient filtering with an optical waveguide layer.
Waveguide Pixel Architecture Casts CMOS Image Sensors in a New Light
Waveguide-based color splitters for image sensors (Image: Imec)

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By Peter Clarke

The IMEC research institute presented a development at the recent International Electron Devices Meeting that could be part of a game-changing new wave in image sensors.

It is well-known that memory and logic designers have wrestled with problems as circuit complexity has increased while planar geometry scaling has hit limits. The same is true, although for different reasons, for the CMOS image sensor.

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