DLPA078C February   2017  – October 2024 DLP160AP , DLP160CP , DLP2000 , DLP2010 , DLP230GP , DLP230KP , DLP230NP , DLP3010 , DLP3310 , DLP4710 , DLP471TP , DLPC3420 , DLPC3421

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction to Optical Modules
    1. 1.1 DLP Display Chip or Digital Micromirror Device (DMD)
    2. 1.2 Illumination
    3. 1.3 Illumination Optics
    4. 1.4 Projection Optics
    5. 1.5 Flash Memory Board
  5. 2Core Optical Module Specifications
    1. 2.1 Brightness
    2. 2.2 Size
    3. 2.3 Resolution
    4. 2.4 Illumination Power Consumption
    5. 2.5 Throw Ratio
    6. 2.6 Offset
    7. 2.7 Contrast Ratio
  6. 3Additional Optical Module Specifications
    1. 3.1 Brightness Uniformity
    2. 3.2 Focus Uniformity
    3. 3.3 Color Management
    4. 3.4 Thermal Management
    5. 3.5 Optical Zoom
    6. 3.6 Depth of Focus
  7. 4Optical Module Specification Examples
  8. 5Get Started with Development
  9.   Revision History

2.4 Illumination Power Consumption

The power consumption of a DLP Display projection system is primarily driven by the illumination source in the optical module and is typically measured in watts.

For RGB LED-illuminated optical modules, the power consumption specification includes all three LEDs (red, green, and blue). The LEDs can be driven to a maximum current and temperature specified by the LED manufacturer. Total LED power consumption depends on the LED drive current and duty cycle for each color.

The 4th channel blue pump LED is used to enhance the output of the green LED, resulting in increased brightness without increasing the power consumption for the other channels. The 4th channel blue pump LED must synchronize with the green LED for proper color mixing, allowing for brightness adjustments while maintaining color accuracy. Synchronization also improves efficiency, reduces flicker, and contributes to lower overall power consumption with reduced energy costs.

Additional examples of various illumination sources and the impacts to brightness, color performance, and efficiency in an optical module are discussed in detail from slides 32 - 45 of the DLP Optical Design Guidelines presentation.