Projector for portable electronic apparatus

A projector for projecting an image to a projection plate, comprising:

• a first digital micro-mirror device, with a first micro-mirror disposed thereon;
• a second digital micro-mirror device, comprising a plurality of second micro-mirrors disposed thereon;
• and
• a projection light source, emitting a projection beam toward the first digital micro-mirror device;
• wherein the first digital micro-mirror device reflects the projection beam from the projection light source to the second digital micro-mirror device, the first micro-mirror is rotated with respect to a vertical axis to adjust a horizontal position where the projection beam is projected on the second digital micro-mirror device, the second digital micro-mirror device reflects the projection beam from the first digital micro-mirror device to the projection plate, and the second micro-mirrors are rotated with respect to an horizontal axis to adjust a vertical position where the projection beam is projected on the projection plate.