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US 2002/0001067 A1Published application
Projection type picture display apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorToshitaka Tachibana
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AssigneeMitsubishi Denki Kabushiki Kaisha
InventorToshitaka Tachibana
Estimating the term…
In a projection type picture display apparatus, three degrees of freedom out of six degrees of freedom which are adjusted by an angle-of-view adjusting mechanism are adjusted by using one adjusting plate (three-axis adjusting plate). The adjusting plate on which a projection unit is fixedly supported rotates the projection unit around the X-axis or Z-axis with respect to a screen disposed in parallel to the XY plane and translates the projection unit in the Y-axis direction to adjust three degrees of freedom. The adjusting plate has first, second and third support shafts extending in the Y-axis direction, a first adjusting shaft engageable with the first and second support shafts, and a second adjusting shaft engageable with the first and third support shafts, and adjusts the three degrees of freedom of the projection unit on the basis of the combination of the engagements.
A projection type picture display apparatus comprising a projection unit for projecting a picture to a back face of a screen and a position adjusting mechanism for supporting the projection unit and for giving six adjusting functions including X, Y, Z directional adjustments for moving the projection unit along X-axis, Y-axis, Z-axis of three dimension space respectively, and X, Y, Z rotational adjustments for rotating the projection unit around X-axis, Y-axis, Z-axis respectively, characterized in that said position adjusting mechanism has an adjusting plate member for performing three adjusting functions of said six adjusting functions.
Dependencies are inferred from the claim text.