New PAT-PD Sensors Uses Quantum Tunneling

Press Release Summary:

  • Increases photo-sensitivity to 106 A/W while maintaining SNR of over 60 dB at room temperature, delivering an image signal that is consistently sharp and crisp
  • Devices will be able to convey granular-level sharp details, even in extremely low light conditions, utilizing infrared, near infrared and short-wave infrared frequencies
  • Expands photosensitive light range of CMOS sensors beyond visible light, into NIR spectrum with plans to expand to 2,000 nm with their next-generation sensor and enabling SWIR frequencies

Original Press Release:

SeeDevice Announces PAT-PD(TM) Smart Vision Sensor with Quantum Tunneling, Dramatically Improving Imaging Quality

SeeDevice is a leader in the development of smart vision sensors using quantum tunneling technology to see further, sense faster, and deliver higher-quality images in a wider variety of lighting scenarios. PAT-PD sensors are designed to perform significantly better than existing optical sensors by using quantum tunneling effect to capture a signal with as little as one photon.

Los Angeles, Aug. 18, 2020 /PRNewswire/ -- SeeDevice, a pioneer in quantum image sensing technology, today announced the general licensing availability of Photo Assisted Tunneling - Photo Detector (PAT-PDTM). The agreement allows partners to easily integrate SeeDevice's smart sensing technology into their products.

"PAT-PD uses quantum tunneling to rewrite a lot of the current specifications for light sensors. placing it in an entirely new category of photon sensing capability," said Hooman Dastghaib, CEO of SeeDevice. 

PAT-PD expands the photosensitive light range of CMOS sensors beyond visible light, into the near infrared (NIR) spectrum (between 300nm-1,600nm) with plans to expand to 2,000nm with their next-generation sensor, enabling shortwave infrared (SWIR) frequencies to maintain high visual quality sensing in low-light and near no-light use cases. 

Additionally, the PAT-PD sensor increases photo-sensitivity to 106 A/W, while maintaining a Signal to Noise Ratio (SNR) of over 60dB at room temperature, delivering an image signal that is consistently sharp and crisp. 

Reaction time is also reduced from microseconds to sub-nanoseconds while boosting dynamic range to 100dB linear and 150dB non-linear, allowing the PAT-PD sensor to capture images in record time while maintaining an extremely high-fidelity image.

SeeDevice achieves these results using standard CMOS fabrication process allowing for easy integration in mixed-signal process and avoiding expensive exotic materials and manufacturing processes to achieve similar results.

Current photo sensors work by directing incoming light to an array of photo-diodes and photo-transistors that convert the light into an electric current which is amplified and then converted into viewable pixels using software. Image sensors using photo-diodes require as much light as possible to generate a high-quality image so, unless pictures are taken in bright sunlight or perfect indoor lighting conditions, image quality degrades significantly in lower-light conditions. Sensitivity of photo-diodes is measured in uV per electron generated or amps/watt (A/W). While typical photo-diode sensors generate 0.15-0.25 A/W, PAT-PD uses quantum tunneling to produce an astounding 108 A/W, surpassing the performance of today's leading CMOS image sensors.

Quantum tunneling allows a photon-activated current flow to trigger using a fraction of the photons normally required in a photo-diode-based design. This allows the PAT-PD sensor to trigger with just a single photon, generating a current with unprecedented efficiency and creating a signal with significantly less input over a far wider range of wavelengths. Using a PAT-PD silicon-based CMOS image sensor, devices will be able to convey granular-level sharp details, even in extremely low light conditions, utilizing infrared, near infrared, and short-wave infrared frequencies.

Media Contact:
Mark Shedd
Phone: +1 (657) 325-4022

Source SeeDevice, Inc

More from Mounting & Attaching Products

All Topics

COVID-19 Response Suppliers COVID-19 Response:
Can Your Company Help Provide Critical Supplies?

We are using the power of our platform to aid in the mass shortage of critical supplies. If your company can help provide supplies, capabilities, or materials for products such as N-95 Masks and Tyvek SuitsPlease let us know.

COVID-19 Response Suppliers