Introduction: The Unique Positioning of the IMX947
Within Sony's Pregius S sensor family, the IMX947 series occupies a distinctive niche. While it shares the 2.5-inch optical format and 39.7mm diagonal with the IMX927/937 series, its pixel architecture is entirely different. The IMX947 features large 5.48μm pixels, ~26.37MP effective resolution, and a maximum frame rate of 423fps.
Unlike the IMX927 (2.74μm/105MP), which pursues extreme pixel counts, the IMX947 prioritizes ultimate sensitivity. Sony's dual technology approach addresses diverse industrial vision requirements with precision.
Both black-and-white (IMX947 AMB) and color (IMX947 AQB) versions are available. With a global shutter and large pixel design, these sensors deliver excellent low-light performance, while the 423fps ultra-high frame rate enables freezing of extremely fast motion.
Part 1: IMX947 AMB vs. IMX947 AQB – Technical Specifications
1.1 Shared Technology Platform
Both sensors employ the Pregius S back-illuminated stacked architecture, separating the pixel layer from the circuit layer. This enables high sensitivity while achieving high-speed global shutter readout.
Parameter Specification Notes
Sensor Size 2.5-inch (39.7mm diagonal) –
Effective Pixels 5,136 × 5,136 ≈ 26.37MP –
Pixel Size 5.48μm × 5.48μm –
Aspect Ratio 1:1 (square) –
Shutter Type Global Shutter –
Output Interface SLVS-EC v3.1/v3.2 –
Package Ceramic with connector, 45 × 52mm –
Power Supply 1.1V / 1.8V / 2.9V / 3.3V –
Input Drive Frequency 37.125MHz / 74.25MHz –
Control Interface 4-wire –
Color Filter None / Bayer RGB –
Technology Platform Pregius S –
1.2 Frame Rate Performance
Output Bit Depth Frame Rate Notes
8-bit 423fps –
10-bit 383fps –
12-bit 277fps –
At 423fps, the IMX947 can capture 423 26.37MP images per second, equivalent to 11.1 billion pixels per second, making it one of the fastest in the Pregius S family.
1.3 Core Differences Between B&W and Color Versions
Sensitivity: The black-and-white version, without a color filter, allows photons to reach the photodiode directly, increasing quantum efficiency, especially in low-light and ultra-fast exposure scenarios.
Spatial Resolution: Each pixel in the B&W version independently records luminance for theoretical full resolution; the color version requires demosaicing, which slightly reduces detail.
Output Format: B&W outputs pure grayscale for quantitative analysis and 3D measurement; color outputs raw Bayer data requiring post-processing.
Spectral Response: B&W covers visible to near-infrared, suitable for multispectral and fluorescence imaging; color separates channels via Bayer filters for accurate color reproduction.
1.4 Comparison with Other Series Sensors
Sensor Resolution Pixel Size 8-bit FPS Positioning
IMX947 26.3MP 5.48μm 423fps Ultimate sensitivity & speed
IMX927 105MP 2.74μm 112fps Ultra-high resolution
IMX937 105MP 2.74μm 56fps Balanced high resolution
IMX928 68MP 2.74μm 138fps Mid-high res high speed
IMX929 50MP 2.74μm 225fps Medium res ultra-fast
IMX947 trades pixel count for higher sensitivity and faster frame rates, making it ideal for low-light, high-speed imaging.
Part 2: Core Technical Advantages
2.1 Large Pixel Architecture – Low-Light King
The 5.48μm pixels capture 4× more photons than 2.74μm pixels, significantly improving quantum efficiency. Low dark current and temporal noise enhance SNR, reducing false positives in AI vision pipelines. High full-well capacity extends dynamic range, preserving both highlights and shadows.
2.2 Global Shutter – Perfect for High-Speed Motion
Unlike consumer rolling shutters, the global shutter exposes all pixels simultaneously, eliminating "jelly" distortion during fast motion-critical for high-speed electronics inspection or industrial assembly.
2.3 Ultra-High Frame Rate – 423fps
Captures 423 full-resolution frames per second, allowing freezing of ultra-fast motion. Applications include high-speed SMT inspection, sports analysis, and scientific imaging of phenomena invisible to the human eye.
2.4 1-Shot HDR – Detail Preservation in Complex Scenes
HDR extends dynamic range in a single exposure without reducing frame rate, ensuring reliable detection even with high-contrast surfaces, such as reflective solder pads and dark solder masks.
2.5 Modular Packaging – Camera Design Flexibility
The ceramic package with connector (45 × 52mm) is pin-compatible with IMX927/937. Advantages:
Universal camera platform design
Sensor interchangeability (26MP–105MP, 56–423fps)
Heat dissipation provisions for stable long-term operation
2.6 Imaging Features
Configurable ROI for higher frame rates
Multiple readout modes for resolution/sensitivity trade-offs
Gain range 0–48dB (12-bit), 0–42dB (10/8-bit)
Multi-lane SLVS-EC (2/4/6/8/4×2/6×2/8×2)
Part 3: Endoscope Module Compatibility
3.1 Feasibility Assessment
The IMX947 can be used for endoscopic systems with limitations:
Package size (45 × 52mm) is too large for flexible endoscope tips.
Suitable for rigid endoscopes (laparoscopes, thoracoscopes, arthroscopes), surgical microscopes, or industrial endoscopes, where space constraints are less strict.
3.2 Unique Value in Endoscopic Applications
Large Pixel Sensitivity: Brighter images in low-light cavity environments, reducing illumination needs.
Global Shutter: Reduces motion blur from organ or tissue movement, aiding surgical precision.
423fps Potential: Captures ultra-fast dynamics for specialized research, e.g., vocal cord or heart valve motion.
B&W Fluorescence: High NIR sensitivity for ICG-guided surgeries, clearly visualizing tumor margins and lymphatic pathways.
Color Accuracy: Color AQB supports tissue differentiation and diagnostic evaluation.
3.3 Comparison with Other Endoscope Sensors
Sensor Resolution Pixel Size Format Endoscope Compatibility Strengths
IMX947 26MP 5.48μm 2.5" Rigid / surgical microscope Low-light, fluorescence, high-speed
Mainstream 2–8MP 2–3μm 1/3–1/1.8" Flexible & rigid Routine navigation
IMX06A 50MP 1.6μm 1" Rigid / partial flexible Ultra-high-resolution static imaging
IMX947 is ideal for low-light, high-speed fluorescent imaging where sensitivity is critical.
Part 4: Major Applications
Automated Optical Inspection (2D/3D AOI): High-speed PCB scanning, short exposure 3D measurement.
Semiconductors & Electronics: Wafer defect, chip package, and mask inspection at high sensitivity and speed.
Lithium-ion Battery QC: Real-time inspection during fast winding/stacking processes.
Flat Panel Display: Pixel-level defect detection with high SNR.
Solar Panel Inspection: High-resolution detection of microcracks, defects.
3D Laser Profiling: Accurate height maps with high SNR.
Sports & Motion Capture: Captures fast motion at 423fps with full 26MP resolution.
Aerial Imaging: High sensitivity for mapping, reconnaissance, and monitoring under low-light.
Scientific Imaging: High-speed phenomena and low-light research imaging.
Part 5: Selection Recommendations
Scenarios for Choosing the Black-and-White IMX947 AMB
Inspecting objects where color information is irrelevant, such as semiconductor wafers, precision metal components, or lithium battery electrodes.
Performing 3D measurements using structured light or laser, outputting height maps.
Operating in extremely low-light conditions where maximum sensitivity is required.
Conducting fluorescence or multispectral imaging, especially in the near-infrared spectrum.
Performing quantitative analysis based on grayscale intensity values.
Scenarios for Choosing the Color IMX947 AQB
Inspecting components or markings that rely on color coding.
Performing color consistency checks, such as in pharmaceutical packaging or print quality control.
Producing intuitive color images for visual review or display.
Sorting or grading tasks based on color, such as in food processing.
Capturing multiple color channels simultaneously for complex analysis.
Part 6: System Integration Considerations
6.1 Interface and Bandwidth
The IMX947 series supports SLVS-EC v3.1/v3.2 interfaces, with up to 12.5Gbps per lane. High data rates per lane reduce the number of lanes required for a given data throughput, expanding the range of compatible FPGAs.
At 423fps output of 26MP 8-bit images, the data rate is approximately 11.1 billion pixels per second, requiring ~88.8Gbps of bandwidth. Multi-lane configurations are therefore necessary. Supported lane configurations include 2/4/6/8 and 4×2/6×2/8×2.
6.2 Connectivity with Major Platforms
The SLVS-EC interface allows connection to a variety of mainstream processor platforms:
Ambarella video processing platforms
NVIDIA Jetson embedded AI platforms
Intel FPGA platforms
Other SoCs and ISPs that support SLVS-EC
6.3 Thermal Design
The IMX947 generates considerable heat during high-speed operation. The package includes space for heat sinks, enabling efficient thermal management. System integrators should design appropriate cooling solutions to ensure stable long-term operation.
Part 7: Technology Outlook and Industry Impact
The launch of the Sony IMX947 series further completes the Pregius S platform for large-pixel, high-speed imaging. Combining 26MP resolution with 423fps speed and 5.48μm large pixels, the IMX947 delivers ideal performance for industrial applications requiring extreme low-light sensitivity and rapid capture.
Compared with the resolution-focused IMX927 series, the IMX947 follows a different technological path: prioritizing pixel quality over sheer count. This is not a compromise but a precise response to specific market needs.
For system integrators, the pin-compatible design of the IMX947 allows seamless switching with IMX927/937 sensors on the same camera platform. This enables manufacturers to develop a universal hardware platform and configure sensors according to customer requirements, ranging from high resolution to high sensitivity, significantly reducing development cycles.
For end-users, this means a broader range of options for inspection equipment. Whether extreme resolution or high-speed, low-light performance is needed, there is a matching sensor solution available.
Partners such as Macnica provide evaluation kits, driver support, ISP presets, optical selection assistance, and bridges to common SoCs and FPGAs.
Conclusion
The IMX947 AMB and AQB represent flagship products within Sony's Pregius S platform, offering an impressive balance of 26MP resolution, 423fps output, and 5.48μm large-pixel sensitivity. They provide a new core component choice for industrial vision applications that demand both extreme sensitivity and high-speed capture.
For medical device developers, although the sensor's size prevents direct integration into flexible endoscopes, it is suitable for rigid endoscopes, surgical microscopes, and clinical imaging equipment, enabling low-light fluorescence imaging and ultra-high-speed dynamic capture. In particular, the black-and-white version shows promise in ICG fluorescence-guided surgery, and the 423fps frame rate can capture fast physiological motions that conventional systems cannot.
Technological evolution continues without pause, but products like the IMX947 are opening entirely new frontiers for industrial imaging.
