FPGA-based electronics for confocal line scanners with linear detector arrays Conference Paper
| Authors: | Abeytunge, S.; Crow, R. T.; Rajadhyaksha, M. |
| Editors: | Conchello, Jose-Angel; Cogswell, Carol J.; Wilson, Tony |
| Title: | FPGA-based electronics for confocal line scanners with linear detector arrays |
| Conference Title: | Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XVI |
| Abstract: | One-dimensional linear detector arrays have been used in the development of microscopes. Our confocal line scanning microscope electronics incorporate two printed circuit boards: control board and detector board. This architecture separates control electronics from detection electronics allowing us to minimize the footprint at microscope detector head. The Field Programmable Gate array (FPGA) on the control board generates timing and synchronization signals to three systems: detector board, frame grabber and galvanometric mirror scanner. The detector is kept away from its control electronics, and the clock and control signals are sent over a differential twisted-pair cable. These differential signals are translated to single ended signals and forwarded to the detector at the microscope detector head. The synchronization signals for the frame grabber are sent over a shielded cable. The control board also generates a saw tooth analog ramp to drive the galvanometric mirror scanner. The analog video output of the detector is fed into an operational amplifier where the white and the black levels are adjusted. Finally the analog video is send to the frame grabber via a shielded cable. FPGA-based electronics offer an inexpensive convenient means to control and synchronize simple line-scanning confocal microscopes. © 2009 SPIE. |
| Keywords: | confocal; fpga; line scanner; microscopy; black level; control boards; control electronics; control signal; detector heads; differential signal; frame grabber; line scanners; linear detector arrays; linescanning; mirror scanner; saw-tooth; shielded cable; simple lines; single-ended signals; synchronization signals; three systems; timing and synchronization; twisted-pair; video output; cable shielding; cables; detectors; field programmable gate arrays (fpga); image acquisition; microscopes; mirrors; operational amplifiers; printed circuit boards; printed circuit manufacture; three dimensional; scanning |
| Journal Title | Proceedings of SPIE |
| Volume: | 7184 |
| Conference Dates: | 2009 Jan 26-29 |
| Conference Location: | San Jose, CA |
| ISBN: | 0277-786X |
| Publisher: | SPIE |
| Date Published: | 2009-03-04 |
| Start Page: | 71840A |
| Language: | English |
| DOI: | 10.1117/12.809423 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Identifier: | doi:10.1117/12.809423 |
| Notes: | --- - Progress in Biomedical Optics and Imaging - Proceedings of SPIE - "Export Date: 30 November 2010" - "Art. No.: 71840A" - "Source: Scopus" |
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32Abeytunge
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