Image projecting device
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorTakashi Iizuka
Life of this patent
Estimating the term…
Abstract
An image projecting device is provided with a light source, a modulating device that modulates the light emitted by the light source in accordance with an image to be projected, and a projecting lens that receives the light emitted by the light source and modulated by the modulating device, and projects the modulated light on a screen to form an image. The image projecting device is further provided with a relay lens system which is provided between the modulating device and the projecting lens. The relay lens system is made movable in at least one direction perpendicular to an optical axis of the projecting lens to shift the image on the screen.
Claims8
An image projecting device, comprising:
- a light source for emitting light;
- a modulating device that modulates the light emitted by said light source in accordance with an image to be projected;
- a projecting lens that receives the light emitted by said light source and modulated by said modulating device, and projects the modulated light onto a screen, said projecting lens being precluded from movement at least in a direction transverse to an optical axis of said projecting lens;
- and
- a relay lens system provided between said modulating device and said projecting lens, said relay lens system being movable in a direction perpendicular to the optical axis of said projecting lens.
An image projecting device, comprising:
- an image source that forms an image to be projected;
- a projecting lens that projects the image formed by said image source on a screen, said projecting lens being unmovable with respect to said image projecting device;
- and
- a relay lens system provided between said image source and said projecting lens, said relay lens system being movable in at least one direction perpendicular to an optical axis of said projecting lens.
An image projecting device, comprising:
- a light source that emits light;
- a modulating device that modulates the light emitted by said light source in accordance with an image to be projected;
- a projecting lens that receives modulated light and that projects the modulated light onto a screen;
- and
- a relay lens positioned between said modulating device and said projecting lens, said relay lens being moveable independently of said projecting lens in at least one direction perpendicular to an optical axis of said projecting lens.
Dependencies are inferred from the claim text.