Surveying instrument having wavelength dispersion compensation prisms and surveying instrument system

A surveying instrument comprising:

• a distance measuring light projecting module which has a light emitter and a light projecting lens and is configured to project a laser beam emitted from said light emitter as a distance measuring light onto a distance measuring optical axis via said light projecting lens, a light receiving module which has an image forming lens and a photodetector and is configured to receive a reflected distance measuring light on a light receiving optical axis via said image forming lens by said photodetector, an optical axis deflector which is constituted of a plurality of prisms, including disk prisms and wavelength dispersion compensation prisms, and integrally deflects said distance measuring optical axis and said light receiving optical axis, a wide-angle image pickup module having an image pickup lens and an image pickup element and having substantially the same field angle as a maximum deflection range of said optical axis deflector, a projecting direction detecting module configured to detect an optical axis deflection angle and a deflecting direction by said optical axis deflector, a narrow-angle image pickup module having an image forming lens and a tracking image pickup element and having a field angle narrower than a field angle of said wide-angle image pickup module and having an optical axis a part of which is common to said distance measuring optical axis, a distance measurement calculation module and an arithmetic control module, wherein said wavelength dispersion compensation prisms which are constituted of a plurality of optical members having the different wavelength characteristics are provided in the part of which is common to said distance measuring optical axis and said narrow-angle image pickup optical axis, said arithmetic control module is configured to control the optical axis deflection of said optical axis deflector and a distance measuring operation of said distance measurement calculation module, said distance measurement calculation module is configured to perform the distance measurement of a measuring point based on a signal of said distance measuring light and a signal of said reflected distance measuring light, and said narrow-angle image pickup module is configured to acquire a narrow-angle image in which the dispersion has been compensated by said wavelength dispersion compensation prisms.