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Applied Optics

Applied Optics


  • Vol. 35, Iss. 1 — Jan. 1, 1996
  • pp: 188–192

Shack Hartmann wave-front measurement with a large F-number plastic microlens array

Geun Young Yoon, Takahisa Jitsuno, Masahiro Nakatsuka, and Sadao Nakai  »View Author Affiliations

Applied Optics, Vol. 35, Issue 1, pp. 188-192 (1996)

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A new plastic microlens array, consisting of 900 lenslets, has been developed for the Shack Hartmann wave-front sensor. The individual lens is 300 μm × 300 μm and has a focal length of 10 mm, which provides the same focal size, 60 μm in diameter, with a constant peak intensity. One can improve the wave-front measurement accuracy by reducing the spot centroiding error by averaging a few frame memories of an image processor. A deformable mirror for testing the wave-front sensor gives an appropriate defocus and astigmatism, and the laser wave front is measured with a Shack Hartmann wave-front sensor. The measurement accuracy and reproducibility of our wave-front sensor are better than λ./20 and λ/50 (λ = 632.8 nm), respectively, in rms.

© 1996 Optical Society of America

Original Manuscript: February 2, 1995
Revised Manuscript: August 10, 1995
Published: January 1, 1996

Geun Young Yoon, Takahisa Jitsuno, Masahiro Nakatsuka, and Sadao Nakai, "Shack Hartmann wave-front measurement with a large F-number plastic microlens array," Appl. Opt. 35, 188-192 (1996)

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