Projecting head mechanism of a projecting machine

Details Projecting head mechanism of a projecting machine Projecting head mechanism of a projecting machine

1997-04-23

1998-04-21

Dowling, William C.

Optics: image projectors

Temperature control

Heat resistant or insulating material

353DIG6, G03B 2114

Patent

active

057410569

ABSTRACT:
A projecting head mechanism of a projecting machine adapted to project an image generated by a non-reflective document is disclosed. A thermo-conducting metal piece is installed in the projecting head mechanism and the internal surface area of a projecting mirror is coated with silicon compound for evenly and repidly distributing the heat generated by the light beam received by the projecting mirror over the surface area of the projecting mirror, so that the heat will not be concentrated on a spot to damage the projecting machine.

REFERENCES:
patent: 4634246 (1987-01-01), Dreyer, Jr.
patent: 4795252 (1989-01-01), Kyhl
patent: 5172144 (1992-12-01), Hetrick

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