Surveying Instrument

A surveying instrument comprising:

• a distance measuring light projector configured to project a distance measuring light to an object, a distance measuring light receiver having a photodetector configured to receive a reflected distance measuring light from said object, a tracking light projector configured to project a tracking light to said object, a tracking light receiver having a tracking photodetector configured to receive a reflected tracking light from said object, and an image pickup module configured to receive a background light, wherein said distance measuring light projector and said tracking light projector include a first deflecting optical member is configured to deflect any one of said distance measuring light and said tracking light, in such a manner that said distance measuring light and said tracking light become coaxial with each other, and said distance measuring light projector, said tracking light projector, and said image pickup module include a second deflecting optical member is configured to coaxially reflect said distance measuring light, said tracking light, and said background light respectively and transmit through said reflected distance measuring light and said reflected tracking light.