OmniVision Technologies, Inc., a leading developer of advanced digital imaging solutions, today introduced the revolutionary Near Infrared (NIR) technology, Nighthawk NyxelTM. This technology successfully solves the challenges of the current field of image sensor near-infrared detection using new silicon semiconductor architectures and processes. Compared to Howe's traditional NIR sensors, the use of Nighthawk NyxelTM technology can increase the quantum efficiency (QE) by up to 3 times at 850 nm and up to 5 times at 940 nm. These improvements in near-infrared sensitivity enable Howe's image sensors to be sharper and farther at the same near-infrared light volume; and farther imaging areas can be detected. At the same time, in order to match the low energy requirements of the current system, the imaging system using Nighthawk NyxelTM technology reduces the need for LED lights, thereby reducing overall power consumption. With these advantages, Nighthawk NyxelTM technology can be used in many applications, such as surveillance, automotive and machine vision cameras.
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The current machine vision and night vision camera applications on the market are mainly close to infrared imaging technology, because near-infrared imaging can capture objects outside the visible spectrum; in addition, it can help avoid any interference of visible light to the surrounding environment. In addition, nighttime contains more near-infrared photons than visible light, so Nighthawk NyxelTM technology enables higher-resolution image capture at night without the need for a lot of power-hungry LEDs, making it a night vision and battery-powered security camera. The ideal solution for your application. Prior to this, traditional near-infrared detection methods were far from meeting the high sensitivity required for automotive and security camera applications, as well as new mobile devices and high-performance requirements with embedded machine vision applications such as augmented reality (AR) and virtual reality. (VR) products. Nighthawk NyxelTM technology delivers performance beyond existing NIR technology to meet the higher and more demanding requirements of next-generation applications.
“Traditional near-infrared imaging methods rely only on thick silicon to improve the sensitivity of near-infrared image sensors. However, this approach leads to crosstalk and reduces the modulation transfer function (MTF). Usually the industry introduces deep trench isolation (DTI) Try to overcome this, but the results often lead to the destruction of dark areas of the image." Lindsay Grant, vice president of process engineering at Howe Technology explained, "However, Howe Technology overcomes these challenges through exclusive cooperation with our foundry partners, and Using this technology on its 300mm wafers, the initial results are very impressive, and our original equipment manufacturer customers are now very interested in this technology."
The principle of Nighthawk NyxelTM technology is to combine the thick silicon pixel architecture with the extended DTI to improve the QE, and then carefully manage the surface texture of the wafer to maintain the modulation transfer function without affecting the dark current of the sensor. The use of Nighthawk NyxelTM technology improves sensitivity at 850 nm compared to traditional near-infrared products at OmniVision by 3x QE, and 940nm wavelength sensitivity is increased by 5x QE while maintaining all other image quality index. These near-infrared image sensitivity improvements provide unparalleled high image quality, increased image detection range, and reduced light source requirements to reduce power consumption.
The staff of Haowei Technology OmniVision will discuss this near-infrared imaging technology at the 6B30 booth of Hall 6 of the Shenzhen China Public Security Expo (CPSE) from October 29th to November 1st, 2017, and provide product demonstration on site.
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