Initial testing of a MODE lens telescope

Youngsik Kim, Marcos Esparza, Zichan Wang, Nicholas Brar, Yingying Zhang, Daewook Kim, Heejoo Choi, Daniel Apai, Chuck Fellows, Allen Yi, Yuxin Cai, Geonhee Kim, Hwanjin Choi, Woojong Yeo, Tom D. Milster

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


The initial testing of prototype multiple-order-diffraction engineered (MODE) lens telescope is essential process before the sky test to evaluate the optical imaging performance of a space object. Prototype MODE lens telescope consists of MODE primary lens which is a core component to correct secondary spectrum, a field lens and a double Gauss type color corrector and achieves a diffraction limited performance. The performance is tested on the diffraction efficiency with respect to supercontinuum laser wavelength on an optical testbed and evaluated on the polychromatic performance for prototype molded ring segment.

Original languageEnglish (US)
Title of host publicationOptical Manufacturing and Testing XIV
EditorsDaewook Kim, Heejoo Choi, Heidi Ottevaere, Rolf Rascher
ISBN (Electronic)9781510654266
StatePublished - 2022
EventOptical Manufacturing and Testing XIV 2022 - San Diego, United States
Duration: Aug 22 2022Aug 24 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceOptical Manufacturing and Testing XIV 2022
Country/TerritoryUnited States
CitySan Diego


  • Transmission telescope lens
  • diffractive optical element
  • polychromatic performance
  • secondary spectrum

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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