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Omron / Sentech STC-CMB401CXP / STC-CMC401CXP machine vision camera
Omron / SentechHigh-speed cameras
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Omron / Sentech Sentech STC-CMB401CXP / STC-CMC401CXP (4MP CoaXPress)

STC-CMB401CXP

The STC-CMB401CXP (monochrome) and STC-CMC401CXP (color) are compact CoaXPress area-scan cameras using a 1" ams OSRAM CMV4000 global-shutter CMOS sensor with 2048 x 2048 effective pixels (4MP) and 5.5 x 5.5 um cells, delivering 142.5 fps over a single CXP-6 lane. They conform to the CoaXPress Standard Version 1.1.1 and are powered over the coax cable (PoCXP), consuming 5.3 W or less, with exposure adjustable from 14 us to 16 s and analog gain up to x1.6 plus digital gain up to x5. The C-mount housing measures 40 x 40 x 41.4 mm and weighs about 124 g, with a DIN1.0/2.3 coax interface connector and a Hirose HR10A-7R-6PB power/signal connector. Trigger modes include edge preset, pulse-width, CXP trigger packet and free-run, and the camera supports ROI scanning, image flip, defective-pixel correction and eight user-setting memories (the color model adds manual white balance).

Brand
Omron / Sentech
Camera type
Area scan
Interface
CoaXPress (CXP-6, 1 lane)
Resolution
4 MP (2048 x 2048 = 4.19 MP)
Horizontal resolution
2048 (H) x 2048 (V) px
Mono / color
Monochrome (STC-CMB401CXP) / Color (STC-CMC401CXP)
Sensor manufacturer
ams OSRAM (CMOSIS)
Sensor model
ams OSRAM CMV4000
Shutter
Global shutter
FPS
142.5 fps
Mount
C-mount
Sensor size
1" optical format
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Technical overview

The Omron Sentech STC-CMB401CXP (monochrome) and its color sibling STC-CMC401CXP are compact area-scan cameras built around the 1-inch ams OSRAM CMV4000 global-shutter CMOS sensor. With 2048 x 2048 effective pixels (4.19 MP) on 5.5 x 5.5 um cells, they hit 142.5 fps over a single CXP-6 CoaXPress lane. That combination is the headline for an installer: a true global shutter freezes motion with zero geometric distortion, so parts moving on a conveyor, on a rotary index, or under a fast-moving web are captured cleanly at full resolution without the skew or smear a rolling shutter would introduce. At 142.5 fps the sensor's wide 1-inch format and 5.5 um pixels keep light-gathering generous while still resolving the kind of detail needed for surface defect inspection, dimensional gauging, and code reading on fast lines.

The interface is the design-defining choice here. CoaXPress (CXP-6, 1 lane, conforming to CoaXPress Standard Version 1.1.1 with GenICam) carries 4 MP at 142.5 fps over a single coax cable while delivering Power-over-CoaXPress (PoCXP) and trigger/control back to the camera on that same cable. The whole camera draws 5.3 W or less, so one DIN1.0/2.3 coax run handles data, power, and trigger. You will need a CoaXPress frame grabber in the host PC rather than a plain NIC or USB port, so this is a PC-based vision build, not a plug-and-play smart-camera deployment. Power and I/O also land on a Hirose HR10A-7R-6PB connector. Exposure is adjustable from 14 us all the way to 16 s, with analog gain up to x1.6 and digital gain up to x5, giving headroom for both very short strobe-frozen captures and long integrations in dim conditions.

Mechanically the camera is a 40 x 40 x 41.4 mm C-mount housing weighing about 124 g, so it drops into tight inspection stations and standard C-mount lens tooling. Because the sensor is a 1-inch optical format, lenses must cover the full 1-inch image circle to avoid corner vignetting; a smaller 2/3-inch or 1/2-inch lens will not. Trigger options cover edge preset, pulse-width, the CXP trigger packet over coax, and free-run, which lets the camera be slaved precisely to an encoder, PLC, or photoeye and synchronized to strobed lighting for motion-stopped imaging. On-camera processing includes ROI scanning (read out a window for higher effective frame rates), image flip, defective-pixel correction, and eight user-setting memories; the color STC-CMC401CXP version adds manual white balance. The mono model is the choice for maximum sensitivity and edge contrast on surface and metrology tasks, while the color model suits print, label, and color-dependent verification.

Best for

  • High-speed surface and defect inspection on fast-moving electronics, semiconductor, and automotive parts where the global shutter freezes motion at full 4 MP without distortion
  • Dimensional measurement and gauging on indexing or continuously moving lines that need precise, smear-free edges at 142.5 fps
  • Traceability code reading and OCR/OCV on packaging and printed material where a single CoaXPress cable simplifies the run to the controls cabinet
  • Color print, label, and packaging verification using the STC-CMC401CXP color variant with manual white balance
  • PC-based multi-camera inspection cells where deterministic, low-latency CXP triggering and PoCXP single-cable wiring reduce harness complexity

Selection notes

  • Plan for a CoaXPress (CXP-6) frame grabber in the host PC; this camera will not run on a standard NIC or USB port, so it is a PC-based build rather than a self-contained smart camera
  • Choose mono (STC-CMB401CXP) for maximum sensitivity and edge contrast on metrology and surface tasks, or color (STC-CMC401CXP, with manual white balance) when color content drives the decision
  • Specify a C-mount lens that covers the full 1-inch image circle and resolves the 5.5 um pixel pitch; undersized 2/3-inch or 1/2-inch optics will vignette the 2048 x 2048 sensor
  • PoCXP supplies power over the coax (5.3 W or less), but confirm your grabber's PoCXP budget and use the Hirose HR10A-7R-6PB connector for any additional trigger/I/O wiring
  • For motion-stopped imaging, pair the 14 us to 16 s exposure range with strobed lighting and slave the camera via the CXP trigger packet, edge-preset, or pulse-width modes to your encoder or PLC; use ROI scanning to raise effective frame rate when the full 4 MP frame is not needed

Specifications: General
BrandOmron / Sentech
Camera typeArea scan

Specifications: Sensor
Resolution4 MP (2048 x 2048 = 4.19 MP)
Horizontal resolution2048 (H) x 2048 (V) px
Mono / colorMonochrome (STC-CMB401CXP) / Color (STC-CMC401CXP)
Sensor manufacturerams OSRAM (CMOSIS)
Sensor modelams OSRAM CMV4000
ShutterGlobal shutter
Sensor size1" optical format
Pixel size5.5 x 5.5 um

Specifications: Performance
FPS142.5 fps

Specifications: Interface
InterfaceCoaXPress (CXP-6, 1 lane)
ProtocolsCoaXPress Standard Version 1.1.1 / GenICam

Specifications: Optics
MountC-mount

Specifications: Electrical
Powerpocxp
Power consumption5.3 W

Specifications: Mechanical
Dimensions40 (W) x 40 (H) x 41.4 (D) mm
Weight124 g

Frequently asked questions

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