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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 9 — Mar. 20, 2011
  • pp: C403–C407

High-performance antireflective coatings with a porous nanoparticle layer for visible wavelengths

Tsuyoshi Murata, Hitoshi Ishizawa, and Akira Tanaka  »View Author Affiliations


Applied Optics, Vol. 50, Issue 9, pp. C403-C407 (2011)
http://dx.doi.org/10.1364/AO.50.00C403


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Abstract

Ghosts and flares are well-known problems that are caused by reflections from lens surfaces when we take photographs. It is more difficult to prevent such stray light in a digital camera than in a film camera because of high reflectance from the low-pass filter and diffraction from the image sensor. To prevent such stray light, we introduce an ultralow refractive index layer into the antireflective (AR) coatings. We used the solgel method to form porous fluoride layers with ultralow refractive indices, and we succeeded in developing a unique process to form AR coatings with superior performance.

© 2011 Optical Society of America

OCIS Codes
(310.1210) Thin films : Antireflection coatings
(310.6628) Thin films : Subwavelength structures, nanostructures

History
Original Manuscript: August 2, 2010
Revised Manuscript: December 29, 2010
Manuscript Accepted: January 12, 2011
Published: March 2, 2011

Citation
Tsuyoshi Murata, Hitoshi Ishizawa, and Akira Tanaka, "High-performance antireflective coatings with a porous nanoparticle layer for visible wavelengths," Appl. Opt. 50, C403-C407 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-9-C403


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References

  1. T. Murata, H. Ishizawa, I. Motoyama, and A. Tanaka, “Investigations of MgF2 optical thin films prepared from autoclaved sol,” J. Sol-Gel Sci. Technol. 32, 161–165 (2004). [CrossRef]
  2. T. Murata, H. Ishizawa, I. Motoyama, and A. Tanaka, “Preparation of high performance optical coatings with fluoride-nano-particle films made from autoclaved sols,” Appl. Opt. 45, 1465–1468 (2006). [CrossRef] [PubMed]
  3. T. Murata, H. Ishizawa, I. Motoyama, and A. Tanaka, “Investigation of MgF2 optical thin films with ultralow refractive indices prepared from autoclaved sol,” Appl. Opt. 47, C246–C250 (2008). [CrossRef] [PubMed]
  4. S. S. Kistler, “Coherent expanded aerogels and jellies,” Nature 127, 741–741 (1931). [CrossRef]
  5. G. A. Nicolaon and S. J. Teichner, “Préparation des aérogels de silice à partir d’orthosilicate de méthyle en milieu alcoolique et leurs propriétés,” Bull. Soc. Chem. Fr. 5, 1906–1911 (1968).
  6. B. E. Yoldas, “Investigations of porous oxides as an antireflective coating for glass surfaces,” Appl. Opt. 19, 1425–1429(1980). [CrossRef] [PubMed]

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