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Non-mydriatic confocal retinal imaging using a digital light projector
Aeon Imaging, USA.
Indiana University, USA.
Indiana University, USA. (Vision Enabling Lab)ORCID-id: 0000-0002-3745-0035
Aeon Imaging, USA.
Vise andre og tillknytning
2015 (engelsk)Inngår i: Proceedings of SPIE, vol 9376: Emerging Digital Micromirror Device Based Systems and Applications VII, 93760E / [ed] Michael R. Douglass; Philip S. King; Benjamin L. Lee, SPIE - International Society for Optical Engineering, 2015, s. 93760E-1-93760E-10Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A digital light projector is implemented as an integrated illumination source and scanning element in a confocal nonmydriatic retinal camera, the Digital Light Ophthalmoscope (DLO). To simulate scanning, a series of illumination lines are rapidly projected on the retina. The backscattered light is imaged onto a 2-dimensional rolling shutter CMOS sensor. By temporally and spatially overlapping the illumination lines with the rolling shutter, confocal imaging is achieved. This approach enables a low cost, flexible, and robust design with a small footprint. The 3rd generation DLO technical design is presented, using a DLP LightCrafter 4500 and USB3.0 CMOS sensor. Specific improvements over previous work include the use of yellow illumination, filtered from the broad green LED spectrum, to obtain strong blood absorption and high contrast images while reducing pupil constriction and patient discomfort.

sted, utgiver, år, opplag, sider
SPIE - International Society for Optical Engineering, 2015. s. 93760E-1-93760E-10
Serie
Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X, E-ISSN 1996-756X ; 9376
HSV kategori
Forskningsprogram
Naturvetenskap, Optometri
Identifikatorer
URN: urn:nbn:se:lnu:diva-44789DOI: 10.1117/12.2077704OAI: oai:DiVA.org:lnu-44789DiVA, id: diva2:823572
Konferanse
Emerging Digital Micromirror Device Based Systems and Applications VII, 10-11 February 2015, San Francisco, California, United States
Tilgjengelig fra: 2015-06-18 Laget: 2015-06-18 Sist oppdatert: 2019-06-10bibliografisk kontrollert

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