Cooling system for spatial light modulating devices

A cooling system for controlling temperature of a light valve of a projection system, said light valve being illuminated by a light source, the cooling system comprising:

• a first sensor for measuring a first temperature of a first part of the light valve,
• at least one active heating device, cooling device, or heating and cooling device to transfer heat between the light valve and a heat source, a heat sink, or a heat source and sink,
• a controller for controlling the temperature of the light valve with the at least one active heating device, cooling device, or heating and cooling device according to the first temperature with respect to a reference temperature,
• means for determining the amount of light absorbed by the light valve,
• and wherein the controller is further configured to control the active heating device, cooling device, or heating and cooling device based on the amount of light absorbed by the light valve.