A control device configured to communicate with a first projector which projects a first image in a first projection area, and a second projector which projects a second image in a second projection area having a first overlap area overlapping the first projection area to make the first projector and the second projector perform an edge blending process includes a reception section for receiving input of designation information including a direction in which an overlap width, a generation section for generating first overlap information including information representing first side in the first overlap area and information representing the overlap width of the first overlap area, and second overlap information including information representing second side in the first overlap area and the information, and a transmission section for transmitting the first overlap information to the first projector, and the second overlap information to the second projector.

Dual and multi-modulator projector display systems and techniques are disclosed. In one embodiment, a projector display system comprises a light source; a controller, a first modulator, receiving light from the light source and rendering a halftone image of said the input image; a blurring optical system that blurs said halftone image with a Point Spread Function (PSF); and a second modulator receiving the blurred halftone image and rendering a pulse width modulated image which may be projected to form the desired screen image. Systems and techniques for forming a binary halftone image from input image, correcting for misalignment between the first and second modulators and calibrating the projector systeme.g. over timefor continuous image improvement are also disclosed.

A method for automatically producing an optical blend mask arranged in a beam path (8) of a projector (2) in a projection system with two projectors (2), by determining an actual state of the projection system by calibrating and producing an ideal blending, ascertaining an individual distortion of the projector (2) by using a front or back projection surface (11), introduced into the beam path (8), using patterns (13) from which points are derived, ascertaining the alignment and the position of the front or back projection surface (11) within a blend mask plane, calculating the optical blending for a partial image, for positioning and/or a transformation of the ideal blending, adapting the ideal blending for compensating a soft focus, applying the ascertained, individual distortion of the projector (2) to the blending, ascertaining data of the optical blend mask and outputting data for producing the optical blend mask.

A method for automatically producing an optical blend mask arranged in a beam path (8) of a projector (2) in a projection system with two projectors (2), by determining an actual state of the projection system by calibrating and producing an ideal blending, ascertaining an individual distortion of the projector (2) by using a front or back projection surface (11), introduced into the beam path (8), using patterns (13) from which points are derived, ascertaining the alignment and the position of the front or back projection surface (11) within a blend mask plane, calculating the optical blending for a partial image, for positioning and/or a transformation of the ideal blending, adapting the ideal blending for compensating a soft focus, applying the ascertained, individual distortion of the projector (2) to the blending, ascertaining data of the optical blend mask and outputting data for producing the optical blend mask.

A first illumination light source emits a first illumination light ray which is a first polarized light. Either one of an s-polarized light and a p-polarized light, which are linearly polarized light, is the first polarized light and the other is a second polarized light. A second illumination light source emits a second illumination light ray. A dichroic mirror includes a specific polarization reflection area and a transmission area. The specific polarization reflection area reflects the first polarized light and transmits the second polarized light and the second illumination light ray. The transmission area transmits the first and second illumination light rays. A phase difference plate converts linearly polarized light into circularly polarized light. A polarization conversion element transmits either the first or second polarized light, shifts an optical axis of the other, and aligns the first and second illumination light rays to the first or second polarized light.

A system and method are disclosed for exhibiting wide-screen motion pictures, including in multiplex-style theaters, with an immersive, virtual reality picture-dominance effect not previously obtainable in such theaters. The invention uses a zero-gain or nominal-gain curved screen to accommodate a wide-screen presentation, and a digital projector capable of delivering fourteen foot-lamberts or more of light to the screen. It can support any theatrical aspect ratio for presentation, including 2.76:1. To eliminate image distortion, the invention uses mapping software to correct the image for the geometry of the auditorium and the shape of the screen. This correction is established for every aspect ratio displayed in the auditorium in which the invention is installed, and aspect ratios can be changed to display content with different aspect ratios during a program. The images delivered to viewers through the invention deliver the full benefit of the native aspect ratio in which they are displayed.

A system and method are disclosed for exhibiting wide-screen motion pictures, including in multiplex-style theaters, with an immersive, virtual reality picture-dominance effect not previously obtainable in such theaters. The invention uses a zero-gain or nominal-gain curved screen to accommodate a wide-screen presentation, and a digital projector capable of delivering fourteen foot-lamberts or more of light to the screen. It can support any theatrical aspect ratio for presentation, including 2.76:1. To eliminate image distortion, the invention uses mapping software to correct the image for the geometry of the auditorium and the shape of the screen. This correction is established for every aspect ratio displayed in the auditorium in which the invention is installed, and aspect ratios can be changed to display content with different aspect ratios during a program. The images delivered to viewers through the invention deliver the full benefit of the native aspect ratio in which they are displayed.

A control device configured to communicate with a first projector which projects a first image in a first projection area, and a second projector which projects a second image in a second projection area having a first overlap area overlapping the first projection area to make the first projector and the second projector perform an edge blending process includes a reception section for receiving input of designation information including a direction in which an overlap width, a generation section for generating first overlap information including information representing first side in the first overlap area and information representing the overlap width of the first overlap area, and second overlap information including information representing second side in the first overlap area and the information, and a transmission section for transmitting the first overlap information to the first projector, and the second overlap information to the second projector.

A control device configured to communicate with a first projector which projects a first image in a first projection area, and a second projector which projects a second image in a second projection area having a first overlap area overlapping the first projection area to make the first projector and the second projector perform an edge blending process includes a reception section for receiving input of designation information including a direction in which an overlap width, a generation section for generating first overlap information including information representing first side in the first overlap area and information representing the overlap width of the first overlap area, and second overlap information including information representing second side in the first overlap area and the information, and a transmission section for transmitting the first overlap information to the first projector, and the second overlap information to the second projector.

Various embodiments described herein relates to a lens cap, adapted to be mechanically engaged over a lens assembly of an optical projector. The lens cap, as described herein, is adapted for vignetting a light pattern projected by the optical projector. The lens cap includes a front surface and a back surface, where on at least a portion of the front surface, an elliptically shaped aperture is defined. In this aspect, the elliptically shaped aperture is chamfered towards its peripheral ends, as the elliptically shaped aperture extends out from the back surface of the lens cap towards the front surface of lens cap. Also, the elliptically shaped aperture is defined on the lens cap such that, a center axis of the aperture is offset to a central axis of the lens cap, so as to match an offset at which the light pattern is projected by the optical projector.