A method and a device for optically measuring a distance by emitting an amplitude
modulated and bundled optical signal and by receiving the signal reflected from a target …

The invention refers to a device for the optical meas urement of distances having a
transmitter for transmitting modulated light and a receiver for receiving the light after its …

US11262438B2 - Method and device for optically measuring distances - Google Patents
US11262438B2 - Method and device for optically measuring distances - Google Patents …

The invention relates to a method for optical distance measurement, in which a transmitter of
a transmission branch (14), which branch is integrated with a measuring device (10) …

US7221435B2 - Device and method for optical distance measurement - Google Patents
US7221435B2 - Device and method for optical distance measurement - Google Patents …

An improved distance measuring device of the type which utilizes an amplitude-modulated
light wave to measure the phase difference between the transmitted and the received …

The phase difference between a modulated light signal transmitted to and reflected back
from a distant target and that of a signal transmitted through an internal reference path is …

A distance measuring instrument comprising a high-frequency reference source for emitting
a modulated light signal and from which a first and second oscillation of 1 kHz is derived in a …

To measure the distance to points on an object by radiating a periodic amplitude-modulated
optical signal to the object and detecting the phase difference between the radiated optical …

The phase of a modulated light carrier signal that is transmitted to and reflected back from a
distant reflec tor is compared with a reference modulated light carrier signal to provide a di …