Surveying instrument
AssigneeTopcon Corporation
InventorTaichi Yuasa
Life of this patent
Estimating the term…
Abstract
A surveying instrument includes a distance measuring module for measuring a distance to the object, in which the distance measuring module includes a light projecting optical system configured to project a distance measuring light and a light receiving optical system configured to receive a reflected distance measuring light, the light receiving optical system includes a prism having a quadrangular shape and a photodetector, the prism includes a first plane, a second plane, a third plate and a fourth plane, configured to enter the reflected distance measuring light in the first plane, sequentially internally reflect on the second plane, the first plane, and the third plane, transmit through the fourth plane, and project, and the reflect distance measuring light projected from the prism configured to be received by the photodetector.
Claims13
A surveying instrument comprising:
- a distance measuring module for irradiating an object with the distance measuring light and measuring a distance to said object based on the reflected distance measuring light from said object, wherein said distance measuring module includes a light projecting optical system configured to project said distance measuring light and a light receiving optical system configured to receive said reflected distance measuring light, said light receiving optical system includes a prism having a quadrangular shape and a photodetector, said prism comprises a first plane, a second plane, a third plane and a fourth plane, configured to enter said reflected distance measuring light in said first plane, sequentially internally reflect on said second plane, said first plane, and said third plane, transmit through said fourth plane, and project, and said reflected distance measuring light projected from said prism is configured to be received by said photodetector.
A surveying instrument comprising:
- a distance measuring module for irradiating an object with the distance measuring light and measuring a distance to said object based on the reflected distance measuring light from said object, wherein said distance measuring module includes a light projecting optical system configured to project said distance measuring light and a light receiving optical system configured to receive said reflected distance measuring light, said light receiving optical system includes a prism having a quadrangular shape and a photodetector, said prism comprises a first plane, a second plane, a third plane, and a fourth plane, said second plane is constituted of a reflection plane for reflecting said reflected distance measuring light and a transmission plane for transmitting through said reflected distance measuring light, said prism configured to enter said reflected distance measuring light in said first plane, sequentially internally reflect on said reflection plane, said first plane, said third plane, and said fourth plane, transmit through said transmission plane, and project, and said reflected distance measuring light projected from said prism is configured to be received by said photodetector.
Dependencies are inferred from the claim text.