Patent ID: 7903318

Claim:
A MEMS micromirror device comprising: a MEMS substrate having at least one layer, wherein the MEMS substrate has a top surface; a plurality of micromirrors for reflecting light impinging thereon, wherein said light has a central wavelength λ 0 , wherein the micromirrors are supported by the MEMS substrate and disposed over the top surface of the MEMS substrate, and wherein gaps exist between the micromirrors; and a diffractive pattern for suppressing backreflection of light leaking through the gaps between the micromirrors and impinging onto the top surface of the MEMS substrate, by diffracting said leaking light, wherein the diffractive pattern is disposed on or within the top surface of the MEMS substrate, and wherein the diffractive pattern encompasses at least 80% of an area formed by a normal projection of the gaps between the micromirrors onto the MEMS substrate.