Metalens array generated structured light for distance sensing

Mu Ku Chen, Cheng Hung Chu, Hsin Yu Kuo, Ren Jie Lin, Din Ping Tsai

Research output: Journal article publicationConference articleAcademic researchpeer-review


Metalens are composed of designed subwavelength nanostructures at an interface which can control the properties of incident light. Here we demonstrated a GaN metalens array to project a light spots array which can be a light shape generator in the structured light applications. The distance between two light spots is a function with the distance of target. A 10 x 10 achromatic metalens array which arranged by the single metalens diameter is 20 um. The advantages of this metadevice is light weight, small, ultrathin, durable and easy to compact with other device. Our design provides a new avenue for the structure light application such as distance sensing and 3D environmental construction.

Original languageEnglish
Article numberOMC-P-27
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Apr 2019
Externally publishedYes
EventOptical Manipulation and Structured Materials Conference 2019 - Yokohama, Japan
Duration: 22 Apr 201926 Apr 2019


  • Distance sensing
  • Metalens
  • Structured light

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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