Benny Koene on Thu, May 4, 2017
Cameras produce a significant amount of heat, especially the latest large resolution image sensors running at high frame rates such as the On Semi Vita25k, the Python 25k and the CMV50000. This heat is mainly originating from the image sensor (image read-out) and the FPGA (image processing) and it needs to be removed from the camera efficiently. Too much heat can damage the image sensor or FPGA. Furthermore the image noise will increase with increasing temperature.
For camera manufacturers there are a few options for heat management.
The second option is challenging but well worth the effort as using a fan has significant disadvantages on design and measurement accuracy:
Because of the above disadvantages of fans, Adimec designs their cameras without fans and optimizes the mechanical construction to both evenly distribute and efficiently transfer heat away from the sensor and FPGA to the camera housing. This keeps the camera compact (see image below) and if additional cooling is necessary the system integrator could connect the camera to a heat sink, i.e. a large metal surface.
Cameras that use fans are generally poorly designed mechanically but more importantly they are poorly designed in their image sensor control and image processing architectures, using too much computational brute force and unnecessary memory operations.