Overhead projector with vibration control head

An improved overhead projector having a head assembly mounted in a cantilevered fashion to a head support arm, the head assembly including a head bracket that supports a projection lens and a mirror, wherein the improvement comprises:

• a generally planar and horizontal mounting plate positioned between the head support arm and the head bracket, the mounting plate being attached to the head support arm in a cantilevered fashion near a rear edge of the mounting plate, and the head bracket being attached to and supported by the mounting plate at a position spaced from the head support arm.

A projection head for an overhead projector having a support arm for supporting the projection head, comprising:

• a lens bracket coupled to the support arm and adapted to hold a projection lens;
• a mirror bracket adapted to hold a projection mirror, the mirror bracket being resiliently coupled to the lens bracket;
• a damping material disposed between the lens bracket and the mirror bracket to isolate the mirror bracket from vibration of other parts of the projector.

An improved projection head for attachment to a head supporting arm of an overhead projector, comprising:

• a head bracket adapted to support a projection lens and a projection mirror, the lens and the mirror being positioned in from of the supporting arm;
• a rearwardly extending portion of the head bracket located behind the support arm;
• and a counterweight attached to the rearwardly extending portion of the head bracket.