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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 1 — Jan. 1, 2012
  • pp: 64–74

Ultraslim fixed pattern projectors with inherent homogenization of illumination

Marcel Sieler, Peter Schreiber, Peter Dannberg, Andreas Bräuer, and Andreas Tünnermann  »View Author Affiliations


Applied Optics, Vol. 51, Issue 1, pp. 64-74 (2012)
http://dx.doi.org/10.1364/AO.51.000064


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Abstract

For a given illumination source brightness, the transmitted flux of common single-aperture projection optics scales with all three system dimensions, thus preventing the realization of slim devices along with a high lumen output. In this article we introduce a multichannel approach, called “array projector,” which breaks this constraint, thus enabling the realization of ultraslim but high flux systems with inherent homogenization for still image content. The concept is based on regular two-dimensional arrangements of absorbing object structures and projective microlenses superposing their individual images on the screen. After deriving first-order scaling laws for the multichannel projector in contrast to common single-aperture optics, specification of system parameters is shown considering aberrations of a single-channel and collective effects of the array. The technological realization of a sample system is shown and characterized in terms of modulation transfer, homogeneity, depth of focus and flux.

© 2012 Optical Society of America

OCIS Codes
(110.4190) Imaging systems : Multiple imaging
(120.2040) Instrumentation, measurement, and metrology : Displays
(220.3620) Optical design and fabrication : Lens system design
(230.3990) Optical devices : Micro-optical devices
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: March 17, 2011
Revised Manuscript: September 9, 2011
Manuscript Accepted: September 12, 2011
Published: December 22, 2011

Citation
Marcel Sieler, Peter Schreiber, Peter Dannberg, Andreas Bräuer, and Andreas Tünnermann, "Ultraslim fixed pattern projectors with inherent homogenization of illumination," Appl. Opt. 51, 64-74 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-1-64

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