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IO Industries Redwood

The Redwood family is designed for a new generation of ultra high-resolution image sensors with faster frame rates in compact optical formats.

  • High Resolution, High Speed
  • 12MP, 45MP and 65MP options
  • Advanced Global Shutter CMOS Sensor
  • CoaXPress 2.0 & Ultra Long Distance CoaXPress Over Fiber
  • Selectable 8/10/12-bit Data Formats

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The Redwood family of industrial video cameras are designed for a new generation of ultra high-resolution image sensors with faster frame rates in compact optical formats. These cameras push the boundaries for high-resolution industrial and scientific imaging, wide area observation, virtual reality and special effects.

High Resolution and High Frame rate

The Redwood series is designed with some of the fastest high-resolution CMOS image sensors available today.

654G71 models featuring the all-new Gpixel GMAX3265, a 35mm-format 65.4MP global shutter sensor.

At full 9344 x 7000 resolutions, frame rates up to 71fps (8-bit output) or 57fps (10-bit output) can be achieved.  Using the high dynamic range 12-bit mode, frame rates up to 31fps (8/10/12-bit output) are possible.

447X52-CX model, based on the 44.7MP ON Semiconductor XGS 45000 sensor. This again features global shutter capability, with 8192H x 5468V resolution and up to 52fps output over a quad CoaXPress 2.0 coaxial interface.

The 3.2micron square pixels use low-noise charge-domain global shutter technology for artefact-free motion imaging, as well as light pipe technology for excellent quantum efficiency, high shutter efficiency and broad angular response.

120C335 models feature the AMS CMV12000, an APS-C 12.6MP global shutter sensor.  At full 4096 x 3072 resolution, frame rates up to 335fps (8-bit output), 299fps (10-bit output) or 132fps (12-bit output) can be achieved.

Using a selectable sensor window area, the 120C335 can output Ultra-HD 3840×2160 at 475fps, or HD 1920×1080 at 936fps.  The high-sensitivity 5.5?m square pixels use global shutter technology for artifact-free motion imaging.

Advanced Global Shutter Sensors

The CMOS image sensors used in the Redwood camera series feature advanced charge-domain global shutter capability with light pipe technology.  Global shutter means all pixels across the sensor capture light during the same period of time.  In contrast, sensors which use a rolling shutter technique will stagger the start of exposure throughout the rows of the image.  This leads to motion artefacts in fast-moving scenes, as well as uneven frame illumination if bright flashes occur partway through the exposure period.  At the pixel level, global shutter capability is implemented through in-pixel circuitry, however as pixel sizes are decreased to allow higher resolutions, too much in-pixel circuitry reduces the pixel’s sensitivity.

High Speed Digital Video Outputs

CoaXPress is a standardised high-bandwidth digital video interface for transmission of video data over single or multiple coaxial cables. Developed as a next-generation standard for the machine vision industry, CoaXPress combines high-speed serial link technology and low-cost coaxial cables to form a bidirectional full-duplex communication link between video sources (ie. cameras) and video receivers (ie. frame grabbers or DVRs).  With advancements in image sensor technology, a high-performance interface is needed to allow the full bandwidth of these sensors to be utilised.  The throughput limits of existing video interfaces such as 1-10 GigE Vision, USB3 Vision, and even Camera Link are easily eclipsed by the bandwidth of sensors such as those used in the Redwood camera series.  Additionally, system designers using cameras with these interfaces are faced with limitations regarding cable length, robustness, complexity and cost. All models with QSFP+ optical interface supporting the new CoaXPress-over-Fiber protocol now available!

Multiple ROI Outputs, Sub-Sampling and Binning Features

Several image formatting and manipulation features are provided in the feature set of the Redwood camera series.  For inspection applications, a single camera can be used to provide highly detailed images of a wide area, but if known regions of interest (ROI) within the field of view are the only portions needing to be inspected, the camera’s multiple-ROI readout feature can minimise the data needing to be transferred to the processing system.  Up to 16 separate non-overlapping window areas can be created, and a composite image of those regions is transmitted rather than the entire sensor image.  This can help to also increase the camera’s frame rate, as the sensor will skip rows above, between and below the defined ROIs.  Other features allow for optimising the camera’s output data rate in different ways.  Subsampling (pixel skipping) allows the full field of view to be transmitted at a lower resolution, but at higher frame rates.  Binning and Averaging (digital, off-sensor) allow for optimisation of the sensitivity or signal-to-noise ratio of the delivered images.