Electric optical distance wavelength meter

Details Electric optical distance wavelength meter Electric optical distance wavelength meter

2008-03-04

2008-03-04

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S005110, C356S005150, C356S005010

Reexamination Certificate

active

11252589

ABSTRACT:
It is an object of the present invention to provide an electric optical distance wavelength meter detecting the time when the switching is completed and shortening the time required for distance measurement by immediately starting the distance measurement when measurement light and reference light are switched by a light path switching device. An electric optical distance wavelength meter includes a light emitting element for emitting measurement light toward a target placed on a measurement point; a light receiving element for receiving the measurement light coming back after reflecting on the target; a CPU for calculating the distance to the target or the object based on light receiving signals from the light receiving element; and a light path switching device for switching the measurement light so that the measurement light passes through an internal light path from the light emitting element to the light receiving element.

REFERENCES:
patent: 2002/0044270 (2002-04-01), Shirai et al.
patent: 2005/0168719 (2005-08-01), Stierle et al.
patent: 1-213592 (1989-08-01), None
patent: 3177708 (2001-04-01), None
patent: 3236941 (2001-10-01), None
patent: WO 2004027452 (2004-04-01), None

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