Abstract: The Multi-MOEMS display comprises at least two MOEMS, and at least one superposition layer. All MOEMS are illuminated by beams which incide with incidence angles larger than the deflection angle onto the mirrors in their ON-state for an improved separation of illumination and reflected modulated beams. The reflected ON-beams accordingly include a zenith angle with the normal of the mirror arrays of the MOEMS. The increased angle between the illumination and the modulated beam facilitates the separation of illumination and modulated beams and diminishes the optic limitations of light energy flux through this reflection at the modulators. The Multi-MOEMS display uncovers a solution for the geometric problems of arranging multiple MOEMS and superposition layers posed by the non-normal reflection of the modulated image beams, by matching the zenith angles and the azimuth angles in the superposition image, and by a defined position of the MOEMS relative to the superposition layer.

Abstract: A 6-color multi-channel image engine comprises a spatial light modulation system (SLMS) configured to output two spatially modulated light beams, a short wavelength beam (SWL) with the three wavelength bands of the first and second blue and of the first green (B1,B2,G1) and a long wavelength beam (LWL) with the three longer wavelength bands of the second green and of the first and second red (G2,R1,R2) is disclosed. The engine further comprises an adder (ADDER). This adder is configured to combine the short wavelength beam (SWL) and the long wavelength beam (LWL) into a 6-color output beam (OUT).

Abstract: An image engine and a projection system with two discrete format channels are described. The engine comprises a spatial light modulating system in each channel and a combining layer. A specific arrangement of the modulators of the two spatial light modulating systems relative to the combining layer makes it possible that one modulating system generates a landscape format image while the second modulating system generates a portrait format image in a common output path. In the projection system, a control logic addresses either the landscape channel or the portrait format channel or both channels, depending either on the format of the incoming image data, or on external controls.

Abstract: The Multi-MOEMS display comprises at least two MOEMS, and at least one superposition layer. All MOEMS are illuminated by beams which incide with incidence angles larger than the deflection angle onto the mirrors in their ON-state for an improved separation of illumination and reflected modulated beams. The reflected ON-beams accordingly include a zenith angle with the normal of the mirror arrays of the MOEMS. The increased angle between the illumination and the modulated beam facilitates the separation of illumination and modulated beams and diminishes the optic limitations of light energy flux through this reflection at the modulators. The Multi-MOEMS display uncovers a solution for the geometric problems of arranging multiple MOEMS and superposition layers posed by the non-normal reflection of the modulated image beams, by matching the zenith angles and the azimuth angles in the superposition image, and by a defined position of the MOEMS relative to the superposition layer.

Abstract: The superposition system with micro electromechanical systems (MEMS, e.g. DMDs from Texas Instruments) superposes the “ON”-lights of two MEMSs. More specifically, the invention relates to the chirality (handedness) of MEMS and the geometric problems associated with this handedness for superposition systems. In this application we uncover a solution to superpose the images modulated by two MEMSs using an exchange of columns and rows in one of the addressing matrices.

Abstract: DMDs (digital mirror devices) as currently produced by Texas Instruments show handedness with regard to mirror deflection axes and image raster. At present only one isomer (one hand-type) is produced, which we call the (L)DMD. For the superposition of (L)DMDs an additional folding is required in all arrangements of the state of the art, which results in sophisticated and expensive designs, e.g. the trichroic prism assembly (TPA) of 3-chip DMD-projectors. We uncover a superposition method using a pair of stereo-isomeric MEMSs (both the right-handed and the left-handed stereo-isomeric topologies are used). This eliminates the necessity of this previously required additional folding. As a consequence simplified and improved superposition systems can be designed. Minimal back focal length and symmetric designs lead to smaller size, lighter weight and reduced cost.

Abstract: A complex polarizer system (“cross-polarizer”) including an arrangement of at least three polarizing beam splitting layers P1,P2,P3. P1 and P2 are arranged such that a beam transmitted by P1 is reflected by P2 without further polarization rotating components; P3 is arranged such that a beam reflected by P1 transmits P3 without further polarization rotating components. The congeneric processing of the two sub-beams of a beam split at P1 (both sub-beams go through a transmission and a reflection) eliminates the intrinsic asymmetries of simple polarizers with respect to purity and folding. Coupling of cross-polarizers results in efficient arrangements of systems which operate with complementarily polarized radiation, e.g. 2-channel image display systems with reflective spatial light modulators (e.g. Liquid Crystal on Silicon displays).

Abstract: DMDs (digital mirror devices) as currently produced by Texas Instruments show handedness with regard to mirror deflection axes and image raster. At present only one isomer (one hand-type) is produced, which we call the (L)DMD. For the superposition of (L)DMDs an additional folding is required in all arrangements of the state of the art, which results in sophisticated and expensive designs, e.g. the trichroic prism assembly (TPA) of 3-chip DMD-projectors. We uncover a superposition method using a pair of stereo-isomeric MEMSs (both the right-handed and the left-handed stereo-isomeric topologies are used). This eliminates the necessity of this previously required additional folding. As a consequence simplified and improved superposition systems can be designed. Minimal back focal length and symmetric designs lead to smaller size, lighter weight and reduced cost.

Abstract: The 2-channel display system with micro electromechanical systems (MEMS, e.g. DMDs from Texas Instruments) simultaneously generates a right and a left image in two discrete modulation channels, which differ by the polarization of their light beams. More specifically, the invention relates to the chirality (handedness) of MEMS and the geometric problems associated with this handedness in superposition systems. In this application we uncover a solution to superpose the images modulated by identical MEMSs which have their mirror deflection axes oriented parallel to an axis of symmetry of the image raster of the MEMSs.

Abstract: During cross-polarization, both sub-beams of a complex polarization undergo both a transmission and a reflection. To achieve this, a first polarizing sub-process is coupled to the complementary polarizing sub-process (transmission coupled to reflection, reflection coupled to transmission). Both sub-beams show the same polarization contrast and the same intensity, and both sub-beams are folded. The sub-beams are coupled by one common (transmission-reflection) process (a simple polarization). Cross-polarization is achieved alone by directing the beams and choosing appropriate polarizing vectors for the polarizers.

Abstract: The digital mirror device (DMD) is an array of single mirrors, which are deflectable on mirror deflection axes (MDAs, as e.g. characterized by their orientation with the array raster). In the state of the art, all single mirrors on a DMD have parallel MDAs. In our invention, the array is made of different classes of mirrors. These classes differ by the orientation of their MDAs. The invention relates to the simultaneous processing of different characteristics of light (e.g. color) by a single DMD-chip.

Abstract: The 2-channel display system with micro electromechanical systems (MEMS, e.g. DMDs from Texas Instruments) simultaneously generates a right and a left image in two discrete modulation channels, which differ by the polarization of their light beams. More specifically, the invention relates to the chirality (handedness) of MEMS and the geometric problems associated with this handedness in superposition systems. In this application we uncover a solution to superpose the images modulated by identical MEMSs (imagers of the same isomer type) without additional mirroring.

Abstract: The two channel stereo display system with micro electromechanical systems (MEMS, e.g. DMDs from Texas Instruments) simultaneously generates a right and a left image in two discrete modulation channels, which differ by the polarization of their light beams. More specifically, the invention relates to the chirality (handedness) of MEMS and uncovers solutions for some of the geometric problems associated with this handedness in stereoscopic systems. Unpolarized light is split by a first PBS (5) and directed via two TIRs (3,4) onto two MEMSs (1,2) for spatial modulation. In some embodiments, mirror symmetric, compact light paths and complete superposition of the two subimages with a second PBS (6) are realized with two different MEMSs (1) and (2) which are a pair of stereo isomers. Furthermore we uncover solutions with two identical MEMSs.