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ActLight DPD Achieves Single-Photon Sensitivity

PRNewswire: ActLight, a Swiss technology startup developing Dynamic PhotoDiodes (DPDs), announces that the results of its internal tests performed on its most recent technology developments show a device sensitivity that reached the single photon level.

Moreover, the tests confirmed that the sensitivity of the DPD is tunable (i.e. at 2, 3, 5 or 7 photons) with very positive impact on the dynamic range of the device. Important to note is that the brilliant results were achieved at 1.5V bias voltage and with devices manufactured using a standard CMOS 180nm technology.

"It's great that today we are among a selected few innovative technologies to have a talk at the Imaging & Sensors Summit, a great opportunity to present our recent developments in the low voltage single photon sensitivity," said Serguei Okhonin, ActLight Co-Founder and CEO. "And we strongly believe that our DPDs can inspire innovation and enhance user experience in main stream applications such as smartphones and others."

In another presentation, ActLight announces a ToF sensor prototype based on its DPD (see demo video here):

"In current 3D camera sensors, pixel scaling is limited due to complex analog circuits. The DPD's simple digital front-end allows decreasing pixel size below 5 um. Moreover, the DPD and its read-out front-end circuit are implemented on the same substrate in standard low-cost CMOS technology and do not require high voltage for its operation."

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