OPTICAL DEVICE FOR ENHANCING RESOLUTION OF AN IMAGE USING MULTISTABLE STATES

The invention relates to an optical device (1) (e.g. for enhancing the resolution of an image), comprising: a transparent plate member (55) configured for refracting a light beam (L) passing through the plate member (55), which light beam (L) projects an image comprised of rows and columns of pixels (40), and a carrier (30) to which said transparent plate member (55) is rigidly mounted, wherein the carrier (30) is configured to be moved between a first and a second state, whereby said projected image (30) is shifted by a fraction ([delta]P) of a pixel, particularly by a half of a pixel, alonga first direction (x). According to the invention,the carrier (30) is configured to be multistable (e.g. bistable or tristable), wherein said first and said second state are stable states of the multistable (e.g. bistable or tristable)carrier (30), and wherein the optical device (1) comprises an actuator means (66) that is configured to force or initiate a transition of the carrier (30) from the first stable state to the