Patent Number: 6,295,174

Title: Reflective prism device

Abstract: The present invention provides a reflective prism device, which comprises aprism unit and a data communication unit, and communication light beingirradiated from a survey instrument toward said prism unit, whereby thereis provided a light guide for guiding a part of said communication lightentering said prism unit toward said data communication unit.

Inventors: Ishinabe; Ikuo (Tokyo-to, JP), Takaya; Hiromitsu (Tokyo-to, JP)


International Classification:

Expiration Date: 09/25/2013