Projection-type image display apparatus
AssigneeHitachi, Ltd.
InventorsKoji Hirata, Masahiko Yatsu
Life of this patent
Estimating the term…
Abstract
A projection-type image display apparatus includes an enlarging projection optical unit which is configured to project an image displayed on an image display element enlargedly upon a display portion, a display controller portion which is configured to move a position of the image within a display surface of the image display element. The enlarging projection optical unit has a lens group for projecting the image enlargedly, wherein the display controller portion moves the image so as to display the image within the display surface of the image display element by projecting a portion selectively fitted to the display portion when displaying on the display portion through the enlarging projection optical unit.
Claims11
A projection-type image display apparatus, comprising:
- an enlarging projection optical unit which is configured to project an image displayed on an image display element enlargedly upon a display portion;
- and
- a display controller portion which is configured to move a position of the image within a display surface of the image display element;
- wherein the enlarging projection optical unit has a lens group for projecting the image enlargedly;
- and
- wherein the display controller portion moves the image so as to display the image within the display surface of the image display element by projecting a portion selectively fitted to the display portion when displaying on the display portion through the enlarging projection optical unit.
A projection-type image display apparatus, comprising:
- a light source;
- and
- an enlarging projection optical unit which is configured to project an image for display on an image display portion by modulating lights from the light source;
- wherein the enlarging projection optical unit has a lens group including at least one aspherical surface lens for projecting the image enlargedly and a reflection mirror, which is eccentrically arranged with respect to an optical axis of a majority number of lenses of the lens group;
- and
- wherein the projection-type image display apparatus is configured to enable movement of an installation position of the projection-type image display apparatus with respect to the image display portion.
Dependencies are inferred from the claim text.