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High-Speed Industrial-Grade Cameras Developed for Virtual Reality, Surveillance

Feb. 24, 2021
With data-transfer rates up to 50 Gb/s, these color and monochrome cameras are aimed at applications ranging from virtual reality, surveillance, and facial recognition to traffic and street mapping, metrology, and broadcast sports.

This article appeared in Military & Aerospace Electronics and has been published here with permission.

JAI Inc. introduced four 45-Mpixel Spark series industrial-grade cameras for virtual reality, surveillance, facial recognition, traffic and street mapping, metrology, and broadcast sports. These cameras have CoaXPress v2.0 interfaces that can transfer data at 12.5 Gb/s/lane.

The SP-45000-CXP4A, which comes in monochrome and color versions, has a four-channel CXP-12 interface with a maximum data transfer of 50 Gb/s to enable the camera to provide 8K TV resolution output of 7680 by 4320 pixels at 60 frames/s or higher for 8-, 10-, or 12-bit pixel formats.

The industrial-grade camera delivers full-resolution 8-bit, 44.7-Mpixel output at 52 frames/s or at 47 frames/s for 10- or 12-bit output. The faster CoaXPress interface enables users to reduce the number of lanes used, thereby saving on cabling costs, or to work at greater bit depths when maximum image quality and dynamic range are required.

The cameras feature the XGS 45000 CMOS imager (global shutter) from ON Semiconductor, which has a dark noise rating of 4.5 electrons, and a standard dynamic range of 67 dB.

A special built-in high-dynamic-range (HDR) mode that uses a dual gain technique applied to one captured image has a dynamic range up to 73 dB with a maximum frame rate of 30 frames/s. HDR output moves in a 14-bit linear format, or in a knee-point compressed format at a bit depth of 8, 10, or 12 bits.

JAI also introduced the SP-45001M-CXP2A monochrome camera and the SP-45001C-CXP2A color camera featuring CoaXPress interfaces with CXP-12 lane speeds, but using reduced-speed version of the XGS 45000 CMOS imager. These models have a two-channel CoaXPress interface that saves on cabling cost and complexity while also carrying a price tag that is 20% lower than the full-speed models.

For lower-speed applications, users can enhance image quality by using the camera's built-in frame integration capabilities to average as many as eight consecutive frames to reduce shot noise in the image.

The image sensors in the four models have 3.2-µm square pixels and a diagonal of 31.5 mm. Other features include single- and multiple region-of-interest (ROI) capabilities, horizontal and vertical image flip, a sequencer trigger function, automatic level control combining auto-shutter and auto-gain capabilities, and built-in control lenses connected via a Birger Mount.

JAI, www.jai.com

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