Large size image projection

A method of projecting an image, comprising the steps of:

• a) emitting a plurality of laser beams from a plurality of lasers;
• b) sweeping each laser beam along a first direction at a first variable scan rate and over a first scan angle, and also sweeping each laser beam along a second direction substantially perpendicular to the first direction and at a second scan rate different from the first scan rate and at a second scan angle different from the first scan angle, to form a plurality of patterns of scan lines in space, each scan line having a number of pixels of fixed size, each pattern being partly overlapped at an overlap region;
• c) causing selected pixels to be illuminated, and rendered visible, by each laser beam to produce the image from each pattern;
• d) illuminating the selected pixels in the overlap region at a lesser intensity than selected pixels not in the overlap region;
• and
• e) independently energizing each laser at a different time during a predetermined frame interval at respective selected pixels. and for clocking the pixels along the first direction at a variable clock rate correspondina to the first variable scan rate to avoid image distortion.

A method of creating an image from subimages, comprising the steps of:

• a) emitting a plurality of laser beams from a plurality of lasers;
• b) sweeping each laser beam along a first direction at a first variable scan rate and over a first scan angle, and also sweeping each laser beam along a second direction substantially perpendicular to the first direction and at a second scan rate different from the first scan rate and at a second scan angle different from the first scan angle, to form a plurality of patterns of scan lines in space, each scan line having a number of pixels of fixed size;
• c) causing selected pixels to be illuminated, and rendered visible, by each laser beam to produce a subimage from each pattern;
• d) independently energizing each laser at a different time during a predetermined frame interval at respective selected pixels. and for clocking the pixels along the first direction at a variable clock rate corresponding to the first variable scan rate to avoid image distortion;
• and
• e) tiling the subimages to create the image by overlapping the patterns at an overlap region.