Patent ID: 9519088
Filing Date: 2016-12-13
CPC Classification: G02B

Claim Text:
1. A micromirror array comprising: a flat-shaped substrate; and a plurality of unit optical elements formed in an array on said substrate, said micromirror array capable of forming a mirror image of an object to be projected which is disposed on a first surface side of said substrate in space lying on a second surface side opposite from said first surface side, wherein each of said unit optical elements has a protruding or recessed shape perpendicular to the surface of said substrate, and has two side surfaces orthogonal to each other on opposite sides of a corner of the two side surfaces, and wherein said two side surfaces are light reflecting surfaces having a rectangular shape such that the ratio of the vertical length of the light reflecting surfaces as measured in a substrate thickness direction to the horizontal width of the light reflecting surfaces as measured in a substrate surface direction is in the range of 2.5 to 3.0.