Method and apparatus for reducing the rotation rate of mirrors i

Details Method and apparatus for reducing the rotation rate of mirrors i Method and apparatus for reducing the rotation rate of mirrors i

1997-07-08

2000-05-23

Powell, Mark R.

Television

Video display

Projection device

348750, 348759, 359205, 359216, H04N 574

Patent

active

060671270

ABSTRACT:
A projection display system using a laser beam reflected from a rotating mirror, where the rotation rate of the mirror is reduced. During a first rotational period the beam is reflected from the rotating mirror toward a fixed mirror, reflected from the fixed mirror back to the rotating mirror and then reflected from the rotating mirror toward a viewing surface. During a second rotational period the beam is reflected from the rotating mirror, toward the fixed mirror, reflected from the fixed mirror toward a second fixed mirror, from the second fixed mirror toward a second face of the rotating mirror, reflected from the second face of the rotating mirror toward a third fixed mirror, and reflected from the third fixed mirror toward the viewing surface.

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