Imaging optical system, image display apparatus and imaging optical apparatus
AssigneeRicoh Company, Ltd.
InventorAtsushi Kawamura
Life of this patent
Estimating the term…
Abstract
An imaging optical system images a one-dimensional image on an image surface by regarding as an object a light modulator element which has light modulator parts arranged one-dimensionally in a first direction, and regarding a bundle of rays from the light modulator element as an object light. The imaging optical system includes at least two anamorphic surfaces each having radii of curvature which are different on an object surface in the first direction and a second direction which is perpendicular to the first direction, so that imaging surfaces in the first and second directions match.
Claims13
An optical system for an image display apparatus, comprising:
- a curvature of field correcting optical system;
- and
- an imaging optical system configured to pass a bundle of rays from a light modulator element including light modulator parts arranged one-dimensionally in a first direction, and configured to image a one-dimensional image on an image surface via said curvature of field correcting optical system,
- said imaging optical system comprising at least two anamorphic surfaces each having radii of curvature different in the first direction and a second direction perpendicular to the first direction on an object surface, so that imaging takes place on a single imaging surface for both the first and second directions to thereby form a two-dimensional image on the image surface.
An image display apparatus comprising:
- a light modulator element including light modulator parts arranged one-dimensionally in a first direction;
- a curvature of field correcting optical system;
- an imaging optical system configured to pass a bundle of rays from the light modulator element to image a one-dimensional image on an image surface via said curvature of field correcting optical system, said imaging optical system including at least two anamorphic surfaces each having radii of curvature different in the first direction and a second direction perpendicular to the first direction on an object surface, so that imaging takes place on a single imaging surface for both the first and second directions to thereby form a two-dimensional image on the image surface;
- and
- a display section configured to display an image on a display surface by imaging the one-dimensional image on the display surface via said imaging optical system and said curvature of field correcting optical system, and relatively scanning the one-dimensional image and the display surface in a direction perpendicular to a longitudinal direction of the one-dimensional image.
Dependencies are inferred from the claim text.