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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 13492–13506

Projection screen reflectance control for high contrast display using photochromic compounds and UV LEDs

Daisuke Iwai, Shoichi Takeda, Naoto Hino, and Kosuke Sato  »View Author Affiliations

Optics Express, Vol. 22, Issue 11, pp. 13492-13506 (2014)

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This paper presents the first proof-of-concept implementation and the principle that realizes a projection display whose contrast does not decrease even with existing inter-reflection of projection light or environmental light. We propose the use of photochromic compounds (PhC) to control reflectance of a projection surface. PhC changes color chemically when exposed to UV light. A PhC is applied to a surface to control its reflectance by radiating UV light from a UV-LED array. An image is projected from a visible projector onto the surface to boost the contrast. The proof-of-concept experiment shows that the prototype system achieves approximately three times higher contrast than a projection-only system under natural light.

© 2014 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(120.2040) Instrumentation, measurement, and metrology : Displays

ToC Category:
Geometric Optics

Original Manuscript: April 10, 2014
Revised Manuscript: May 21, 2014
Manuscript Accepted: May 21, 2014
Published: May 28, 2014

Daisuke Iwai, Shoichi Takeda, Naoto Hino, and Kosuke Sato, "Projection screen reflectance control for high contrast display using photochromic compounds and UV LEDs," Opt. Express 22, 13492-13506 (2014)

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