Monday, October 15, 2018

Omnivision Combines ULL with Nyxel in 2MP Sensor, Introduces NIR SNR1 Metric

PRNewswire: OmniVision announces the OS02C10, a 2.9um, 2MP sensor with ultra-low-light (ULL) technology. Combining ULL with Nyxel NIR technology, the OS02C10 can detect incident light in both visible and NIR wavelengths and produce color and monochrome images for security applications.

Nxyel NIR technology in OS02C10 gives it a QE of 60% at 850nm and 40% at 940nm, which is 2x to 4x better than competing devices. Such high QE enables the use of lower-power IR illumination in total darkness.

The amount of NIR light that a sensor requires to capture high-quality images can be quantified with a new metric called NIR SNR1, which takes into account the QE, pixel size and read noise. The OS02C10 achieves an SNR1 at 850nm of 23nw/cm2 and an SNR1 at 940nm of 31nw/cm2, which are 2x to 4x smaller numbers compared with the leading competitors' sensors. For the designers of security cameras that operate in total darkness, this means they can reduce IR illumination to consume 2x to 4x less power compared to the competitors' sensors, for the same environment and over the same image-detection range.

"Surveillance cameras with AI functionality need the highest possible resolution in all lighting conditions for accurate facial recognition," said Brian Fang, business development director at OmniVision. "These next-generation, intelligent-sensing surveillance systems are being enabled by our new sensor's top imaging performance, with industry-best detection capabilities under both extremely low visible light and infrared light in complete darkness."

The OS02C10 achieves an SNR1 of 0.16 lux. OmniVision's dual-conversion-gain technology allows this sensor to achieve the industry's best ULL performance, while the 3-frame staggered shutter minimizes motion artifacts and enables a HDR of 120 dB. The OS02C10 image sensor is available now.

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