Spatial light modulator with sub-wavelength structure
First Claim
1. An image projection device receiving a light from a light source through an illumination optic for projecting to a spatial light modulator having a plurality of deflectable micromirrors wherein said micromirrors further comprising:
- a sub-wavelength microstructure on a reflective surface of said micromirrors.
2 Assignments
0 Petitions
Accused Products
Abstract
Additional control flexibilities to generate more gray scales for an image display system is achieved by controlling the intensity distribution of the light projection from a light source to a deflecting mirror to further coordinate with the control of the intermediate states of the deflecting mirror. The control light source intensity distribution can provide incident light with wide varieties of intensity distributions including non-uniform, symmetrical and non-symmetrical, different distributions of polarizations, various cross sectional shapes of the incident lights and other combinations of all of the above variations. More stable and better control of gray scale control is also achieved by optimizing the intensity distributions of the incident light to produce the best visual effects of the image display.
19 Citations
14 Claims
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1. An image projection device receiving a light from a light source through an illumination optic for projecting to a spatial light modulator having a plurality of deflectable micromirrors wherein said micromirrors further comprising:
a sub-wavelength microstructure on a reflective surface of said micromirrors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13)
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11. An image projection device receiving a light from a light source through an illumination optic for projecting to a spatial light modulator having a plurality of deflectable micromirrors wherein said deflectable micromirrors further comprising:
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a sub-wavelength microstructure on a reflective surface of said micromirrors; and said micromirrors further selectively reflecting or transmitting a light of a selected wavelength substantially equal to one of a wavelengths projected from said light source.
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14. An image projection device receiving a light from a light source through an illumination optic for projecting to a spatial light modulator (SLM) having a plurality of deflectable micromirrors each for displaying a pixel wherein said deflectable micromirrors further comprising:
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a sub-wavelength microstructure on a reflective surface of said micromirrors; and said micromirrors of said SLM further selectively reflecting or transmitting a light of a selected wavelength substantially equal to one of a wavelengths projected from said light source.
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Specification