Optimal, long-term performance of the digital micromirror device (DMD) can be affected by various application parameters. The following is a list of some of these application parameters and includes high level design recommendations that may help extend relative reflectivity from time zero:
- Illumination spectrum – using longer wavelengths for operation while preventing shorter wavelengths from striking the DMD
- Illumination power density – using lower power density
- DMD case temperature – operating the DMD with the case temperature at the low end of its specification
- Cumulative incident illumination – Limiting the total hours of UV illumination exposure when the DMD is not actively steering UV light in the application. For example, a design might include a shutter to block the illumination or LED illumination where the LEDs can be strobed off during periods not requiring UV exposure.
- Micromirror landed duty cycle – applying a 50/50 duty cycle pattern during periods where operational patterns are not required.