20240045061. ACQUISITION OF DISTANCES FROM A SENSOR TO A SCENE simplified abstract (Commissariat à l'Energie Atomique et aux Energies Alternatives)
Contents
ACQUISITION OF DISTANCES FROM A SENSOR TO A SCENE
Organization Name
Commissariat à l'Energie Atomique et aux Energies Alternatives
Inventor(s)
Josep Segura Puchades of Grenoble (FR)
ACQUISITION OF DISTANCES FROM A SENSOR TO A SCENE - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240045061 titled 'ACQUISITION OF DISTANCES FROM A SENSOR TO A SCENE
Simplified Explanation
The present description is about a method of acquiring distances from a sensor to a scene using a laser beam. The method involves a number of consecutive capture sub-phases, each comprising supplying a laser beam with a linearly varying optical frequency over a frequency range, delivering a reference beam and a useful beam from the laser beam, and illuminating the scene with the useful beam while illuminating at least one pixel row with a superposition of the reference beam and a reflected beam. The absolute value of the ratio between the frequency range and the time period is different for each capture sub-phase.
- The method involves using a laser beam with a linearly varying optical frequency to acquire distances from a sensor to a scene.
- The laser beam is split into a reference beam and a useful beam.
- The scene is illuminated with the useful beam, while at least one pixel row is illuminated with a superposition of the reference beam and a reflected beam.
- The frequency range and time period are adjusted differently for each capture sub-phase.
Potential applications of this technology:
- Distance measurement in various fields such as robotics, autonomous vehicles, and industrial automation.
- 3D scanning and mapping of objects and environments.
- Augmented reality and virtual reality applications.
- Object detection and tracking.
Problems solved by this technology:
- Accurate and precise distance measurement.
- Overcoming limitations of traditional distance measurement methods.
- Handling complex scenes with multiple objects and surfaces.
- Dealing with varying lighting conditions.
Benefits of this technology:
- Improved accuracy and precision in distance measurement.
- Faster acquisition of distances compared to traditional methods.
- Ability to measure distances in complex and dynamic scenes.
- Reduced sensitivity to lighting conditions.
- Potential for integration into various devices and systems.
Original Abstract Submitted
the present description concerns a method of acquisition of distances from a sensor to a scene, comprising a number n of consecutive capture sub-phases c, with n an integer greater than or equal to and i an integer index ranging from to n, each sub-phase ccomprising: supplying a laser beam having an optical frequency (f) linearly varying over a frequency range of width bfor a time period t; delivering, from the laser beam, a reference beam and a useful beam; and illuminating the scene with the useful beam and illuminating at least one pixel row with a superposition of the reference beam and of a reflected beam. an absolute value of a ratio b/tis different for each capture sub-phase c.