Patent ID: 7301617
Filing Date: 2007-11-27
Classification: G01C

Abstract:
1. A surveying apparatus, comprising: a collimation optical system unit including an objective lens for a user to observe a field a view therethrough; an irradiation unit configured to irradiate illumination light from said objective lens toward a reflector; a ranging unit configured to irradiate ranging light from said objective lens and configured to receive through the objective lens the ranging light reflected from the reflector to measure a distance from the surveying apparatus to said reflector; an image sensor configured to receive light entering through the objective lens and configured to output information on an image in the field of view based on the received light; a display; and an image processing circuit connected with said image sensor and the display and configured to display on the display the image of the field of view based on said image information outputted from said image sensor, a ranging-possible area in which ranging of the distance from the surveying apparatus to the reflector is possible by the ranging unit in a form of a figure, and a position of the reflector relative to a collimation optical axis of the collimation optical system unit in a form of a figure.