Collimation testing of a white light beam and measurement of chromatic aberration of a lens by using vernier Moire fringe patterns

버니어 무아레 무늬를 이용한 백색광의 시준 검사 및 렌즈의 색수차 측정

  • Published : 2000.08.01

Abstract

The new collimation testing technique of a white light beam using vernier Moire fringes of two line or circular gratings with different pitches is presented. We can visually measure the defocusing ($\Deltaf$), the divergence angle ($\theta$), and the longitudinal chromatic aberration $(L_{ch})$ of a collimating lens by using the technique. For example, we obtained $\Deltaf$= 21.9 mm and $\theta=0.0038^{\circ}$ for a testing lens with the focallengthf = 120.0 mm and F-number of F/2.4. The longitudinal chromatic aberration $L_{ch}$ of another testing lens withf = 65.0 mm, F/1.6, and the Abbe number V = 64.1 for the incident wavelengths of $\lambda_1=480 nm and \lambda_2=640 nm$ is easily measured by same technique. It is found that the measured value $L_{ch}=1.59mm(\pm0.01mm)$ is well agreed with $L_{ch}=1.58mm(\pm0.01mm)$ obtained by the autofocus method.

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References

  1. Handbook of the Moire Fringe Technique Patorski, K.
  2. Appl. Opt. v.33 Yuk, K. C.;Jo, J. H.;Chang, S.
  3. Jpn. J. Appl. Phys v.33 no.11A Jo, J. H.;Yuk, K. C.;Chang, S.
  4. 새물리 v.33 육근철;조재흥;장수
  5. 새물리 v.35 김종수;조재흥;장수;육근철
  6. 응용물리 v.10 육근철;최완해;조재흥;장수
  7. 새물리 v.32 김일환;육근철;조재흥;장수
  8. 새물리 v.34 김종수;조재흥;장수;육근철
  9. 응용물리 v.10 이영호;김봉진;조재흥;장수;육근철
  10. 한국광학회지 v.9 조선미;육근철;조재흥;장수
  11. 물리교육 v.17 문일규;육근철;조재흥;장수
  12. 물리교육 v.17 육근철;손영택;김봉진;조재흥;장수
  13. Appl. Opt. v.36 Kim, B. J.;Song, J. S.;Jo, J. H.;Chang, S.;Yuk, K. C.
  14. Opt. Commun. v.154 Song, J. S.;Lee, Y. H.;Jo, J. H.;Chang, S.;Yuk, K. C.
  15. Appl. Opt. v.13 Fouer, J. C.;Malacara, D.
  16. Appl. Opt. v.26 Kothiyal, M. P.;Sirohi, R. S.
  17. Optical Shop Testing Malacara, D.
  18. Opt. Eng v.32 Lee, Y. W.;Cho, H. M.;Lee, I. W.
  19. 응용물리 v.3 이윤우;조현모;이인원;홍경희
  20. Appl. Opt. v.3 Vargady, L. O.
  21. Appl. Opt. v.13 Fouere, J. C;Malacara, D.