Illumination device and image projection apparatus comprising the device
First Claim
1. An illumination device, comprising:
- a light source, comprising an array of a plurality of light emitting devices, and an illumination uniformizing means in a form of a back light panel, further comprising;
an incident plane;
a bottom plane and a projection plane disposed opposite thereto, the bottom plane and the projection plane being connected to the incident plane at a lower side and an upper side thereof, respectively, the bottom plane further comprising a scattering pattern for uniformizing a light incident from the incident plane; and
a side plane, disposed opposite the incident plane, the side plane having an upper side connected to the projection plane and a lower side connected to the bottom plane;
wherein the scattering pattern comprises a plurality of triangle patterns each of which has a top interior angle originating from the incident plane and a bottom side located at the side plane.
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Accused Products
Abstract
An illumination device and an image display apparatus using the same. The illumination device comprising a light source, an illumination uniformizing device, and a polarization converter. The image display apparatus comprises an illumination device provided in the invention, a synthesizing means, and a projection means.
The illumination uniformizing device has an incident plane for receiving a light emitted from the light source. Opposite the incident plane, a mirror is used as a side plane of the illumination uniformizing device to reflect the light coming from the incident plane. A bottom plane at a lower side and projection plane at an upper side of the incident plane are disposed between the incident plane and the side plane. A scattering pattern gradually condensed from the incident side toward the side plane is formed on the bottom plane, so that the light incident from the incident plane is made uniform.
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Citations
12 Claims
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1. An illumination device, comprising:
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a light source, comprising an array of a plurality of light emitting devices, and an illumination uniformizing means in a form of a back light panel, further comprising;
an incident plane;
a bottom plane and a projection plane disposed opposite thereto, the bottom plane and the projection plane being connected to the incident plane at a lower side and an upper side thereof, respectively, the bottom plane further comprising a scattering pattern for uniformizing a light incident from the incident plane; and
a side plane, disposed opposite the incident plane, the side plane having an upper side connected to the projection plane and a lower side connected to the bottom plane;
whereinthe scattering pattern comprises a plurality of triangle patterns each of which has a top interior angle originating from the incident plane and a bottom side located at the side plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification