Optical system design for light detection and ranging with ultra-wide field-of-view using liquid lenses

Hyun Choi, No Cheol Park, Wan Chin Kim

Research output: Contribution to journalArticle

Abstract

The light detection and ranging (LiDAR) technology is based on irradiating near-infrared light and measuring the time-of-flight of the scattered light in an object. This technology is becoming increasingly important, as the requirement of three-dimensional camera technology for future autonomous vehicles is on the rise. In this study, we propose an ultra-wide field-of-view (FOV) optical system for LiDAR that can sequentially scan a beam emitted from a high power laser through a small beam steering system using a liquid lens and a fisheye lens. The proposed optical system consists of a series of liquid lenses for beam steering, a commercial fisheye lens with a wide FOV, and a relay optics to effectively conjugate the intermediate image planes of the two lens systems. To verify theoretical feasibility, we have designed a practical optical system with an FOV of approximately 170°, which is much higher than the FOVs in any other non-rotating LiDAR systems.

Original languageEnglish
JournalMicrosystem Technologies
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Optical systems
systems engineering
field of view
Lenses
Systems analysis
lenses
Liquids
liquids
beam steering
relay
high power lasers
High power lasers
vehicles
cameras
optics
Optics
Cameras
requirements
Infrared radiation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

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abstract = "The light detection and ranging (LiDAR) technology is based on irradiating near-infrared light and measuring the time-of-flight of the scattered light in an object. This technology is becoming increasingly important, as the requirement of three-dimensional camera technology for future autonomous vehicles is on the rise. In this study, we propose an ultra-wide field-of-view (FOV) optical system for LiDAR that can sequentially scan a beam emitted from a high power laser through a small beam steering system using a liquid lens and a fisheye lens. The proposed optical system consists of a series of liquid lenses for beam steering, a commercial fisheye lens with a wide FOV, and a relay optics to effectively conjugate the intermediate image planes of the two lens systems. To verify theoretical feasibility, we have designed a practical optical system with an FOV of approximately 170°, which is much higher than the FOVs in any other non-rotating LiDAR systems.",
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Optical system design for light detection and ranging with ultra-wide field-of-view using liquid lenses. / Choi, Hyun; Park, No Cheol; Kim, Wan Chin.

In: Microsystem Technologies, 01.01.2019.

Research output: Contribution to journalArticle

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