DEVICE AND METHOD FOR WAVELENGTH FILTERING
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Accused Products
Abstract
Embodiments include devices and methods for wavelength filtering. For example, one embodiment includes a display comprising a plurality of the display elements each comprising a movable reflector, a first partial reflector, and a second partial reflector. The first partial reflector is positioned at a first distance from the movable reflector and forms a first optical resonant cavity therebetween. The second partial reflector is positioned at a second distance from said first partial reflector and forming a second optical resonant cavity therebetween. In various embodiments, the movable reflector is movable with respect to the first partial reflector to alter the first optical cavity. Other embodiments include a method of making devices.
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Citations
76 Claims
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1-39. -39. (canceled)
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40. A display device comprising a plurality of display elements, each of the display elements including:
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a movable reflector; a first partial reflector positioned at a first distance from the movable reflector, the movable reflector movable with respect to the first partial reflector to alter the first distance such that the movable reflector and the first partial reflector produce light with a first spectral response associated with a first color; a second partial reflector positioned at a second fixed distance from the first partial reflector, the first partial reflector being disposed between the movable reflector and the second partial reflector; and a dielectric layer between the first partial reflector and the second partial reflector, wherein the first partial reflector and the second partial reflector provide an interferometric filter in which the first partial reflector and the second partial reflector define an optical cavity that is configured to selectively transmit visible wavelengths associated with light having a second spectral response associated with a second color when illuminated with white light. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 65, 66, 67, 68)
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52. A display device comprising a plurality of display elements, each of the display elements including:
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means for reflecting light; first means for partially reflecting light, the first partially reflecting means positioned at a first distance from the reflecting means, wherein the reflecting means is movable with respect to the first partially reflecting means to alter the first distance such that the movable reflecting means and the first partially reflecting means produce light with a first spectral response associated with a first color; second means for partially reflecting light, the second partially reflecting means positioned at a second fixed distance from the first partially reflecting means, the first partially reflecting means disposed between the reflecting means and the second partially reflecting means; and at least one layer of dielectric material between the first partially reflecting means and the second partially reflecting means, wherein the first partially reflecting means and the second partially reflecting means are configured to interferometrically filter light, the first partially reflecting means and the second partially reflecting means defining an optical cavity that is configured to selectively transmit visible wavelengths associated with light having a second spectral response associated with a second color when illuminated with white light. - View Dependent Claims (53, 54, 55, 56, 57, 69, 70, 71, 72)
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58. A method of making display elements of a display device, the method comprising:
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forming a movable reflector; forming a first partial reflector positioned at a first distance from the movable reflector; forming a second partial reflector positioned at a second distance from the first partial reflector, the first partial reflector being disposed between the movable reflector and the second partial reflector; and forming a dielectric layer between the first and second partial reflectors, wherein; the movable reflector is movable with respect to the first partial reflector to alter the first distance, the first distance is such that the movable reflector and the first partial reflector produce light with a first spectral response associated with a first color, and the first and second partial reflectors provide an interferometric filter in which the first and second partial reflectors define an optical cavity that is configured to selectively transmit visible wavelengths associated with light hag a second spectral response associated with a second color when illuminated with white light. - View Dependent Claims (59, 60, 61, 62, 63, 64, 73, 74, 75, 76)
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Specification