Image projection apparatus
AssigneeCanon Kabushiki Kaisha
InventorYuuki Maeda
Life of this patent
Estimating the term…
Abstract
An image projection apparatus includes a first light modulation element configured to modulate first light from a light source and to generate second light, a second light modulation element configured to modulate second light, an imaging optical system configured to image the second light on the second light modulation element and disposed on an optical path from the first light modulation element to the second light modulation element. The image projection apparatus is configured to project an image formed by light from the second light modulation element onto a projection surface and satisfies a predetermined condition.
Claims14
An image projection apparatus comprising:
- a first light modulation element configured to modulate first light from a light source and to generate second light, the first light modulation element having a first number of pixels that modulate the first light;
- a second light modulation element configured to modulate the second light, the second light modulation element having a second number of pixels that modulate the second light, the second number of pixels of the second light modulation element that modulate the second light being greater in number than the first number of pixels of the first light modulation element that modulate the first light;
- an imaging optical system configured to image the second light on the second light modulation element and disposed on an optical path from the first light modulation element to the second light modulation element,
- wherein the image projection apparatus is configured to project an image formed by light from the second light modulation element onto a projection surface, and
- wherein the imaging optical system satisfies β≤0.95 where β is an imaging magnification of the imaging optical system.
An image projection apparatus comprising:
- a first light modulation element configured to modulate first light from a light source and to generate second light, the first light modulation element having a first number of pixels that modulate the first light;
- a second light modulation element configured to modulate the second light, the second light modulation element having a second number of pixels that modulate the second light, the second number of pixels of the second light modulation element that modulate the second light being greater in number than the first number of pixels of the first light modulation element that modulate the first light;
- an imaging optical system configured to image the second light on the second light modulation element and disposed on an optical path from the first light modulation element to the second light modulation element,
- wherein the image projection apparatus is configured to project an image formed by light from the second light modulation element onto a projection surface.
Dependencies are inferred from the claim text.