Projection display and image display method
OwnerYusaku Shimaoka, Hiroshi Miyai +1inventors
InventorsYusaku Shimaoka, Hiroshi Miyai, Takaaki Gyoten
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Abstract
A projection display apparatus of good portability capable of realizing brightness equivalent to that of a conventional display apparatus and displaying a bright projected image upon supply of power has an extra high pressure mercury lamp, a lamp unit for thereby generating first light and light-emitting diodes, and includes a solid state light source unit for thereby generating second light, a movable mirror and a mirror portion adjusting mechanism for selectively guiding the first light or the second light to reflective indicating elements, and a projection lens for projecting the light modulated by the reflective indicating elements.
Claims18
A projection display apparatus comprising:
- a first light generating instrument which includes a light source that generates white light;
- a second light generating instrument which includes a plurality of solid state light sources which generate red, green, and blue monochromatic light respectively;
- a light modulation element which modulates the white light when the white light is received and which modulates the monochromatic light when the monochromatic light is received;
- a light guiding instrument which switches between guiding the white light and the monochromatic light to the light modulation element;
- and
- a projection instrument which projects the light modulated by the light modulation element.
An image display method using:
- a first light generating instrument which generates white light;
- a second light generating instrument which includes a plurality of solid state light sources and thereby generates more than or equal to three kinds of monochromatic light;
- a light modulation element which modulates the white light when the white light is received and which modulates the monochromatic light when the monochromatic light is received;
- and
- a projection instrument which projects the light modulated by the light modulation element, and wherein:
- the method includes a light guiding step of switching between guiding the white light and the monochromatic light to the light modulation element;
- and
- the light guiding step guides the monochromatic light to the light modulation element and then guides the white light to the light modulation element.
(canceled)
Dependencies are inferred from the claim text.