Patent ID: 8186839

Claim:
An optical module observing at least one of an event and an object comprising: a first mirror having a wide field of view, for detecting at least one of the event and the object over a wide observing region; at least one second mirror, whose focal length is greater than that of the first mirror, for observing the at least one of the event and the object detected by the first mirror at a high resolution; an optical signal detector for detecting an optical signal in light transmitted from at least one of the first mirror and the at least one second mirror; and a body including the first mirror, the at least one second mirror, and the optical signal detector therein, and forming apertures which correspond to the first mirror and the at least one second mirror, respectively, the body providing an optical path from the first mirror and the at least one second mirror to the optical signal detector, wherein the first mirror comprises a digital mirror that is switched off after detecting the at least one of the event and the object, and wherein the at least one second mirror comprises an analog mirror that rapidly changes its tilting angle.