Patent ID: 7307792

Claim:
A method of observation, comprising the steps of: projecting a first image of an object to be observed formed by imaging optics onto a two-dimensional modulator region of a modulator formed by a plurality of pixels, said pixels each being independently switchable into a first and a second condition; selecting a group of pixels in the plane of the two-dimensional modulator region that together display desired image information; switching the group of pixels into the second condition; directing ray paths such that a viewer can perceive the first image only via said modulator; directing only light from the projected object which impinges on the pixels in the first condition into an optical observation path extending from said modulator to an eye of said viewer, such that those parts of the first image which are projected onto the pixels in the second condition are not perceivable by a viewer; and projecting a second image onto the two-dimensional modulator region in such a way that, only a portion of the second image which is projected on the pixels in the second condition is coupled into the optical observation path.