Two-Dimensional Image Formation Device
First Claim
1. A two-dimensional image formation device having a laser light source, and a modulation means for modulating a light emitted from the laser light source, wherein:
- the light modulated by the modulation means has a linear polarization property;
said device includes a depolarization means for depolarizing the linear polarization property of the light modulated by the modulation means, and a projection unit for projecting the modulated light onto an image display surface; and
said depolarization means is incorporated in the projection unit.
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Accused Products
Abstract
A two-dimensional image formation device of the present invention is provided with a spatial light modulation element (7) for modulating light having a linear polarization and emitted from a laser light source (1), and a depolarization means (21) for depolarizing the modulated light before it is incident on an image display surface. The light having a linear polarization is used before and after incidence of irradiated light to the spatial light modulation element (7), and the linear polarization of the irradiated light is depolarized after the modulation, whereby randomly polarized light is projected on a screen (11). Thereby, speckle noise is significantly reduced, and a high-definition image can be formed.
23 Citations
8 Claims
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1. A two-dimensional image formation device having a laser light source, and a modulation means for modulating a light emitted from the laser light source, wherein:
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the light modulated by the modulation means has a linear polarization property; said device includes a depolarization means for depolarizing the linear polarization property of the light modulated by the modulation means, and a projection unit for projecting the modulated light onto an image display surface; and said depolarization means is incorporated in the projection unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification