LASER RADAR DEVICE

• Main Authors: NOMURA, Junia, YANAGISAWA, Takayuki, YOSHIKI, Wataru, ITO, Yusuke
• Format: Patent
• Language: English
• Published: 29.08.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

A laser radar device according to the present disclosed technology includes: a seed-light source to generate pulsed light; an intensity modulated signal generator to generate an intensity modulated signal; and an intensity modulated pulse generator to generate intensity modulated pulsed light on the basis of the pulsed light and the intensity modulated signal. The intensity modulated signal generator includes a branching ratio adjuster and a delayed optical path adjuster, the intensity modulated pulse generator includes an optical path coupler, a variable branching-ratio optical-path branch, and a delayed optical path, which are coupled in a loop shape, the branching ratio adjuster outputs a branching-ratio adjustment signal to determine a branching ratio in the variable branching-ratio optical-path branch, and the variable branching-ratio optical-path branch outputs one branched light to a transmission-side optical system and outputs remaining branched light to the delayed optical path on the basis of the branching-ratio adjustment signal.