Reflective prism device
First Claim
1. A reflective prism device, comprising a prism unit and a data communication unit which are arranged in parallel, and communication light being irradiated from a survey instrument toward said prism unit, wherein there are provided a light guide for guiding a part of said communication light entering said prism unit toward said data communication unit and a switching mechanism for changing the photoreceiving position of said light guide and for guiding said communication light from different position of said prism unit toward said data communication unit.
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Abstract
The present invention provides a reflective prism device, which comprises a prism unit and a data communication unit, and communication light being irradiated from a survey instrument toward said prism unit, whereby there is provided a light guide for guiding a part of said communication light entering said prism unit toward said data communication unit.
53 Citations
3 Claims
- 1. A reflective prism device, comprising a prism unit and a data communication unit which are arranged in parallel, and communication light being irradiated from a survey instrument toward said prism unit, wherein there are provided a light guide for guiding a part of said communication light entering said prism unit toward said data communication unit and a switching mechanism for changing the photoreceiving position of said light guide and for guiding said communication light from different position of said prism unit toward said data communication unit.
Specification