Is there a “window” or coating on the TI Analog Mirrors for protection?
The mirrors are open to the environment. Because the mirror actuators are electromagnetic or piezoelectric based motors, the devices are not overly sensitive to small particles. Handling practices and design enclosures consistent with optical components such as lenses and other mirror surfaces are adequate to maintain motor efficiency, mirror reflectivity, and prevent optical surface damage. It is more cost effective to have a single set of windows at the system level which protects all optical components within the system.