ChemiMOS
- Latest generation cooled CMOS
- Extremely low noise
- High quantum efficiency
- No amp glow
- Deep pixel full well
- Designed for integration into bench top systems
Overview
ChemiMOS is a cooled CMOS camera designed from the ground up to be ideally suited for integration into scientific systems requiring long exposure images. Hours of exposure time has previously only been available with CCD technology, but is now possible with ChemiMOS due to the zero-amp glow and low-noise design. This latest generation of CMOS technology will be available for the foreseeable future, ensuring long-term, supply chain stability. Benefits include very low-read and deep pixel full well, allowing for unprecedented dynamic range.
Cooling is optimised to minimise the dark current, without the need for extreme temperatures, which could complicate the end user design. Calibration routines such as dark frame subtraction and off-camera image processing are included, meaning flexibility and transparency when operating the camera. There is no down time for recalibration as the sensor characteristics change over time.
Specifications Download Datasheet
| Image Sensor | Sony IMX533 |
|---|---|
| Resolution | 3000 x 3000 |
| Pixel Pitch | 3.76 μm |
| Sensor Size | 1" CMOS sensor |
| Full Well | >50,000 e- |
| Read Noise | 1.5 e- |
| Dark Current Noise at camera set point |
0.0005 e-/p/s |
| Set Point Cooling at ambient of 20oC |
-20 °C |
| Frame Rate | 14 bit - 16fps 12 bit - 20fps. |
| Mount Type | C-Mount |
| ADC | 12bit or 14bit |
| Reading Mode | Rolling Shutter CMOS |
| Exposure Range | 10 ms - 24 hour |
| System Requirements | Windows 10 USB 3.0 8GB Ram 64 bit Operating System |
Key Features
Low Dark Current
The exceptionally low dark current of 0.0005 e-/p/s means that the noise component due to thermal build up is exceptionally low (an order of magnitude lower than other similar scientific long exposure CMOS cameras) allowing exposures in the tens of minutes to hours with minimal dark current noise.
No Amp Glow
The use of the absolute latest generation of Sony IMX Sensors allows for the readout electronics on the sensor to be turned off / quietened meaning that ChemiMOS camera does not suffer from amp glow. Although amp glow can be ‘calibrated’ or dark subtracted out, at long exposures there is still a residual noise affect and a detrimental effect on the achievable dynamic range of the cameras. Atik Cameras worked from the premise that starting from a cleaner sensor is always preferable.
Low Read Noise
Due to the fact that each pixel is read independently, CMOS cameras cannot bin in hardware to get the same signal to noise improvements as a CCD. However, with a read noise many times lower than CCD (1.2 e- vs ~6 e-) additive binning can realistically be considered. There is an added advantage that this also increases the full well by adding the single pixel full well capacities.
High Quantum Efficiency
Using a back illuminated sensor means that in situations where there is a limited number of photons, ChemiMOS converts as many as possible into readable signal in the sensor.
