Heat Transfer and Temperature Characteristics of a Working Digital Camera.Digital cameras represented by industrial cameras are widely used as image acquisition sensors in the field of image-based mechanics measurement, and their thermal effect inevitably induces thermal-induced errors of the mechanics measurement.  To deeply understand the errors, the research for digital camera's thermal effect is necessary.  With this model, the thermal equilibrium time and thermal equilibrium temperature of the camera system were calculated.  Then, the influences of thermal parameters of digital camera and environmental temperature on the temperature characteristics of working digital camera were simulated and experimentally investigated.  The theory analysis and experimental results demonstrate that the presented model can accurately describe the temperature characteristics and further calculate the thermal equilibrium state of working digital camera, all of which contribute to guiding mechanics measurement and thermal design based on such camera sensors.
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