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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 19 — Sep. 14, 2009
  • pp: 17179–17189

Advanced imaging with dynamic focus and extended depth using integrated FR4 platform

Serhan O. Isikman, Samuel Varghese, Fahd Abdullah, Robin Augustine, Randy B. Sprague, Voytek Andron, and Hakan Urey  »View Author Affiliations


Optics Express, Vol. 17, Issue 19, pp. 17179-17189 (2009)
http://dx.doi.org/10.1364/OE.17.017179


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Abstract

A two-degrees-of-freedom scanned beam imaging system with large dynamic range and dynamic focusing is demonstrated. The laser diode, photo-detector and the optical components are integrated on a moving platform that is made of FR4 (Flame-Retardant 4), a common polymeric substrate used in printed circuit boards. A scan angle of 52 degrees is demonstrated at 60Hz resonant frequency while the laser is moved 250um in the out-of-plane direction to achieve dynamic focusing. The laser is scanned by physically rotating the laser diode and the collection optics to achieve high signal-to-noise ratio and good ambient light rejection. The collection optics is engineered such that the collection efficiency decreases when collecting light from close distances to avoid detector saturation. The detection range is extended from contact distance up to 600mm while the collected power level varies only by a factor of 30 within this long range. Slight modifications will allow increasing the detection range up to one meter. This is the first demonstration of a laser scan engine with such a high degree of integration of electronics, optoelectronics, optics and micromechanics on the same platform.

© 2009 OSA

OCIS Codes
(000.2700) General : General science
(130.0130) Integrated optics : Integrated optics

ToC Category:
Imaging Systems

History
Original Manuscript: July 1, 2009
Revised Manuscript: August 26, 2009
Manuscript Accepted: September 6, 2009
Published: September 11, 2009

Citation
Serhan O. Isikman, Samuel Varghese, Fahd Abdullah, Robin Augustine, Randy B. Sprague, Voytek Andron, and Hakan Urey, "Advanced imaging with dynamic focus and extended depth using integrated FR4 platform," Opt. Express 17, 17179-17189 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-19-17179


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References

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