Hardware implementation of the reflective mirror micro projector

Ming Jer Jeng*, Yu Hsuan Lin, Jia Xian Liao

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review


Nowadays, digital assistants, mobile phones and other personal portable devices take video function as a basic requirement, but the quality of display is limited by the screen size. Using modulated laser diode as light source illuminating to the MEMS scanning reflective mirror to project a picture, it will escape the limit of screen size and improve the quality of the image. The laser diode which has the advantage of good focus property and no dispersion occurs with a long distance is used as light source instead of light-emitting diodes, and it can make the projector size smaller and more portable. In this work, the micro-projector with a reflective MEMS scanning mirror is studied. The projection resolution and size will depend on the X- and Y -axis input frequency. How to suitable selecting the X- and Y -axis input frequency is an important work for a reflective MEMS scanning mirror. We have implemented the micro-projector by hardware circuit successfully.

Original languageEnglish
Pages (from-to)411-414
Number of pages4
JournalAdvanced Science Letters
Issue number2
StatePublished - 02 2013


  • Laser diode
  • MEMS
  • Projection display
  • Scanning mirror


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