[ozorion]

Speaking as a person that works with these sorts of cameras, what you're experiencing there is known as "strobing". The camera has an iris that it can open to let in more light or close to let in less, but it also includes ELC (electronic light control) to make minor adjustments to the lighting to improve detail. What can sometimes happen with PCB cameras like the one in the reverse camera of cars is that these two technologies can try to fight one another.

I doubt it's something that can be fixed without a service. When I handle cameras like this during my job that are strobing, we usually just replace them.