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Measurement and Analysis of Focus Dispersion in Infrared Compound-Eye Lens Array

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Machining error and material stress are the main causes of focal length difference and mirror distortion of each sub-structure for the compound-eye lens array, which will cause each sub-aperture to defocus and increase the actual measurement error. In view of the difficulty in measuring the consistency of the axial focus position of large-scale infrared compound-eye lens array with a sub-aperture of millimeters, this paper proposes a measurement method based on the focal plane coupling parameter transmission in the optical system, and establishes an experimental measurement system for multi-aperture focal length consistency. The sharpness fixed focus method is used for the sampling precision measurement of the sub-aperture focal position consistency in an infrared compound-eye lens array. The measurement results show that the measured focal position range and the standard deviation of focal position are 21.0 μm and 6.26 μm, respectively. The measurement method for the multi-aperture focal position consistency proposed in this paper provides a quantitative evaluation method for the optical performance of the infrared compound-eye lens array.

Original languageEnglish
Title of host publication2021 15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021
EditorsWu Juan, Yin Jiali
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages448-452
Number of pages5
ISBN (Electronic)9781665444910
DOIs
StatePublished - 2021
Event15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021 - Nanjing, China
Duration: 29 Oct 202131 Oct 2021

Publication series

Name2021 15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021

Conference

Conference15th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2021
Country/TerritoryChina
CityNanjing
Period29/10/2131/10/21

Keywords

  • focal position consistency
  • infrared compound-eye lens array
  • multi-aperture
  • sharpness fixed focus method

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