Three-shell-based lens barrel for the effective athermalization of an IR optical system

Ho Soon Yang, Hagyong Kihm, Il Kweon Moon, Gil Jae Jung, Se Chol Choi, Kyung Joo Lee, Hong Yeon Hwang, Sug-Whan Kim, Yun Woo Lee

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We have developed a new IR optical system that consists of three mirrors and four lenses, and that operates in the temperature range 8°C-32°C. This temperature range can induce thermoelastic deformation in the lenses and their mounting subassembly, leading to a large defocus error associated with the displacement of the lenses inside the barrel. We suggest using a new three-shell-based athermalization structure composed of two materials with different coefficients of thermal expansion (Invar and aluminum). A finite element analysis and the experiment data were used to confirm that this new athermalization barrel had a defocus error sensitivity of 11:6nm=°C; this is an improvement on the widely used conventional single-shell titanium barrel model, which has a defocus error sensitivity of 29:8nm=°C. This paper provides the technical details of the new athermalization design, and its computational and experimental performance results.

Original languageEnglish
Pages (from-to)6206-6213
Number of pages8
JournalApplied Optics
Volume50
Issue number33
DOIs
Publication statusPublished - 2011 Nov 20

Fingerprint

Optical systems
Lenses
lenses
subassemblies
sensitivity
mounting
Mountings
Thermal expansion
thermal expansion
titanium
Titanium
mirrors
aluminum
Aluminum
Finite element method
Temperature
temperature
coefficients
Experiments

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)

Cite this

Yang, H. S., Kihm, H., Moon, I. K., Jung, G. J., Choi, S. C., Lee, K. J., ... Lee, Y. W. (2011). Three-shell-based lens barrel for the effective athermalization of an IR optical system. Applied Optics, 50(33), 6206-6213. https://doi.org/10.1364/AO.50.006206
Yang, Ho Soon ; Kihm, Hagyong ; Moon, Il Kweon ; Jung, Gil Jae ; Choi, Se Chol ; Lee, Kyung Joo ; Hwang, Hong Yeon ; Kim, Sug-Whan ; Lee, Yun Woo. / Three-shell-based lens barrel for the effective athermalization of an IR optical system. In: Applied Optics. 2011 ; Vol. 50, No. 33. pp. 6206-6213.
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Yang, HS, Kihm, H, Moon, IK, Jung, GJ, Choi, SC, Lee, KJ, Hwang, HY, Kim, S-W & Lee, YW 2011, 'Three-shell-based lens barrel for the effective athermalization of an IR optical system', Applied Optics, vol. 50, no. 33, pp. 6206-6213. https://doi.org/10.1364/AO.50.006206

Three-shell-based lens barrel for the effective athermalization of an IR optical system. / Yang, Ho Soon; Kihm, Hagyong; Moon, Il Kweon; Jung, Gil Jae; Choi, Se Chol; Lee, Kyung Joo; Hwang, Hong Yeon; Kim, Sug-Whan; Lee, Yun Woo.

In: Applied Optics, Vol. 50, No. 33, 20.11.2011, p. 6206-6213.

Research output: Contribution to journalArticle

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Yang HS, Kihm H, Moon IK, Jung GJ, Choi SC, Lee KJ et al. Three-shell-based lens barrel for the effective athermalization of an IR optical system. Applied Optics. 2011 Nov 20;50(33):6206-6213. https://doi.org/10.1364/AO.50.006206