Patent ID: 8681319
Filing Date: 2014-03-25
Classification: G01S

Abstract:
1. A laser radar comprising: a laser beam generating means for generating a laser beam; a first scanning member for scanning the laser beam from the laser beam generating means in a virtual plane that passes through a predetermined axis; a control means for controlling a displacement of the first scanning member so that an angle of the scan beam in the plane is changed; a second scanning member for deflecting the laser beam scanned by the first scanning member and scanning the deflected laser beam toward an external space, the scan member being rotatable about the axis; a light detecting means for detecting reflected light that is the laser beam reflected in and returned from the external space; a light collecting means for collecting the reflected light to the light detecting means, the light collecting means being integrally formed with the second scanning member; and a driving means for driving and rotating both the second scanning member and the light collecting means about the axis, wherein: the second scanning member has a deflecting surface arranged on a side on which the laser beam is incident and formed to deflect the laser beam; the deflecting surface is formed at least in a portion of a region along a circumferential direction of the axis, the deflecting surface being a plurality of reflecting surfaces coaxially arranged centering on the axis; and the plurality of reflecting surfaces are each formed to have a different inclination with respect to a horizontal plane which is perpendicular to the axis.