Patent ID: 8102589

Claim:
A superposition system, comprising two spatially separate channels feeding two images into a common light path; light of at least one light source feeding the two channels; spatial light modulators of the Micro Electro Mechanical System type, at least one in each channel, characterized by modulating light via the direction of the reflection of the incident light beam; each spatial light modulator comprising an array of deflectable mirrors; each spatial light modulator having stereo-isomeric structure and showing functional handedness, characterized by their deflectable mirrors having mirror deflection axes (MDAs) which are not parallel to a symmetry axis of their mirror arrays; the mirror arrays of each spatial light modulator being characterized by having columns which are distinguishable from their rows with respect to structural properties of the spatial light modulator, the columns being referenced by a first and the rows being referenced by a second address index, such that the single mirrors can be addressed as M[column;row]; said spatial light modulators being positioned such that the axis of the incident light beam differs from the axis of the modulated ON-light beam, the modulated ON-light beam being reflected normally to the surface of the spatial light modulator; a superposition layer (S), with a plane of incidence (S POI ), for superimposing the two spatially modulated ON-light beams of each channel into a common ON-light beam; a first spatial light modulator (MEMS 1 ) in one of the channels; a first mirror area (M 1 ) to be superposed, situated on the at least M columns and at least B rows of the mirror array of the first spatial light modulator (MEMS 1 ), and the single mirrors of the first mirror area being addressable as M 1 [m;b], wherein m=1 . . . M, and b=1 . . . B; a second spatial light modulator (MEMS 2 ) in the second channel; a second mirror area (M 2 ) to be superposed, situated on the at least B columns and at least M rows of the mirror array of the second spatial light modulator (MEMS 2 ), and the single mirrors of the second mirror area being addressable as M 2 [b;m]; the ON-light beam of the deflectable mirror in the first mirror area at column m and row b M 1 [m;b] being superposed with the ON-light beam of the deflectable mirror in the second mirror area at column b and row m M 2 [b;m].