OmniVision has announced the new OS05B CMOS image sensor. The OS05B combines leading pixel technology and quantum efficiency (QE) in a 5-megapixel design for professional and high-end consumer security cameras, such as industrial and factory surveillance systems, webcams, and high-end baby monitors. OS05B uses 1/2.78-inch optical format and 2.0 micron BSI pixel design process based on PureCel Plus technology. The image sensor also uses Howe's Nyxel near infrared (NIR) technology to obtain sharp images in low-light conditions.
"Five years ago, Howe introduced the OS05A Image sensor, the first 5-megapixel image sensor for security using the PureCel pixel architecture and Nyxel technology," said Cheney Zhang, Senior Marketing Manager, OmniVision Group. We continue to improve this technology to meet our customers' future needs. Now customers can upgrade to the all-new OS05B, an image sensor that delivers excellent near-infrared quantum efficiency and low-light performance in a 5-megapixel compact package. The OS05B is ideal for professional security cameras used in industrial and factory applications that require the ability to capture clear video at low power at night."
According to a recent report by Yole Group1, the mainstream resolution of consumer security cameras is 2 to 5 megapixels, accounting for 90% of image sensor shipments. Low light performance is the most critical performance parameter, while near infrared and high dynamic range (HDR) performance are also key factors.
Compared with OS05A, OS05B has a 32% improvement in signal-to-noise ratio (SNR1) and a 24% improvement in quantum efficiency at 940 nm NIR wavelength. OS05B also has selective conversion gain -- high conversion gain improves sensitivity and reduces readout noise levels while achieving optimal SNR in low light conditions. However, low conversion gain can achieve higher full well capacity in bright environment. The OS05B captures high-resolution video at a frame rate of 60 FPS and has double exposure interleaving HDR support. OS05B supports MIPI and LVDS interfaces.
