An optical measurement device includes at least a multi-frequency laser configured to simultaneously generate a frequency-fixed carrier and at least one frequency-modulated subcarrier, an optical branching element, a dual frequency beat signal generator, a difference signal generator, and an arithmetic processing unit. Either the carrier or the subcarrier within the output light of the multi-frequency laser is used as first measurement light and either the carrier or the subcarrier having a frequency different from that of the first measurement light is used as second measurement light. The dual frequency beat signal generator separates and outputs a first complex beat signal derived from the first measurement light and a second complex beat signal derived from the second measurement light. The difference signal generator outputs a difference signal between the first complex beat signal and the second complex beat signal.

An optical measurement device includes at least a multi-frequency laser configured to simultaneously generate a frequency-fixed carrier and at least one frequency-modulated subcarrier, an optical branching element, a dual frequency beat signal generator, a difference signal generator, and an arithmetic processing unit. Either the carrier or the subcarrier within the output light of the multi-frequency laser is used as first measurement light and either the carrier or the subcarrier having a frequency different from that of the first measurement light is used as second measurement light. The dual frequency beat signal generator separates and outputs a first complex beat signal derived from the first measurement light and a second complex beat signal derived from the second measurement light. The difference signal generator outputs a difference signal between the first complex beat signal and the second complex beat signal.

An optoelectronic sensor, including a transmitting unit for transmitting a plurality of optical signals in each case to a plurality of segments of an object, and a receiving unit that includes a first multichannel analog-digital converter device, including: an analog-digital converter unit; a plurality of signal processing channels, the signal processing channels of the plurality of signal processing channels in each case including: a detection antenna for receiving optical signals; and a modulator for generating an individual signal encoding. Signals of the plurality of signal processing channels, with individual signal encoding, are transmittable together to the analog-digital converter unit, are converted, and may be associated once again with the corresponding signal processing channels due to the individual signal encoding via algorithms.

An optoelectronic sensor, including a transmitting unit for transmitting a plurality of optical signals in each case to a plurality of segments of an object, and a receiving unit that includes a first multichannel analog-digital converter device, including: an analog-digital converter unit; a plurality of signal processing channels, the signal processing channels of the plurality of signal processing channels in each case including: a detection antenna for receiving optical signals; and a modulator for generating an individual signal encoding. Signals of the plurality of signal processing channels, with individual signal encoding, are transmittable together to the analog-digital converter unit, are converted, and may be associated once again with the corresponding signal processing channels due to the individual signal encoding via algorithms.

A method of compensation in a light detection and ranging (LIDAR) system. The method includes generating a digitally-sampled target signal. The method also includes compensating for ego-velocity and target velocity in the digitally-sampled target signal based on an estimated ego-velocity and an estimated target velocity to produce a compensated digitally-sampled target signal.

A spatial recognition device provided with an analysis unit configured to acquire, from an optical device which receives reflected light obtained by radiating light onto a reflective plate provided on a moving body positioned within a detection area, reflected light information obtained based on the reflected light in accordance with a radiation direction of the light, and analyze a state of the moving body on which the reflective plate is provided, based on a distribution of the reflected light information at coordinates within the detection area.

A spatial recognition device provided with an analysis unit configured to acquire, from an optical device which receives reflected light obtained by radiating light onto a reflective plate provided on a moving body positioned within a detection area, reflected light information obtained based on the reflected light in accordance with a radiation direction of the light, and analyze a state of the moving body on which the reflective plate is provided, based on a distribution of the reflected light information at coordinates within the detection area.

A first light source outputs measurement light having a wavelength in infrared range. A second light source outputs guide light having a wavelength in visible range. A fiber coupler includes a first port into which the measurement light is input, a second port into which the guide light is input, and a third port outputting combined light formed by combining the measurement light and the guide light with each other. A measurement unit emits the combined light to a measurement object and receives return light reflected therefrom. A processing unit obtains information relating to a distance, a speed, or an oscillation of the measurement object, based on an interference signal of the return light and the reference light. The fiber coupler is formed by a single mode fiber that has a cutoff wavelength that is shorter than that of the measurement light and longer than that of the guide light.

The present application relates to an optical-electro system, which includes a substrate; at least one photo-detecting unit at least partially formed on the substrate to detect a signal light; at least one optical waveguide at least partially formed on the substrate, each of the at least one optical waveguide connected to one of the at least one photo-detecting unit to input a local light; and at least one electronic output port connected to the at least one photo-detecting unit to transmit at least one electronic output signal from the at least one photo-detecting unit, wherein the at least one electronic output signal is associated with the signal light and the local light.

The present application relates to an optical-electro system, which includes a substrate; at least one photo-detecting unit at least partially formed on the substrate to detect a signal light; at least one optical waveguide at least partially formed on the substrate, each of the at least one optical waveguide connected to one of the at least one photo-detecting unit to input a local light; and at least one electronic output port connected to the at least one photo-detecting unit to transmit at least one electronic output signal from the at least one photo-detecting unit, wherein the at least one electronic output signal is associated with the signal light and the local light.