Patent ID: 7744220

Claim:
An apparatus for observing retina of an eye comprising: a retina illumination system configured to illuminate retina of an eye to be examined with illumination light to observe the retina; a compensation optical part configured to comprise a deformable mirror device, and correct a reflected image obtained from the retina by the illumination light of the retina illumination system by changing a shape of the deformable mirror device responding to a given correction quantity; a retina image forming optical system configured to receive the retina image corrected by the compensation optical part and form a retina image; and a retina image light receiving part configured to receive the retina image formed by the retina image forming optical system, wherein the deformable mirror device comprises: a substrate; a plurality of electrodes provided on the substrate; a spacer disposed on the substrate; a support member disposed above the spacer and having an opening passing through from a first face of the support member facing to the substrate to a second face of the support member opposite from the first face; a deformable electrode film formed below the first face of the support member so as to be opposed to the electrodes with a distance and so as to cover the opening; an insulation film provided between the deformable electrode film and the support member; and a reflection film provided on a face of the deformable electrode film opposite from the electrodes so as to overlap the opening, the electrodes being electrically insulated from each other by a plurality of grooves radially extending from a region which includes a position corresponding to a center of the opening.