THz frequency, Goniometric scanning system for human cornea using off-axis parabolic mirrors
Yong Hu (UCLA)
Mariangela Baggio (Aalto University)
Aleksi Tamminen (Aalto University)
Juha Ala-laurinaho (Aalto University)
Elliott Brown (Wright State University)
S. O. Dabironezare (TU Delft - Tera-Hertz Sensing)
Nuria Llombart (TU Delft - Tera-Hertz Sensing)
Sophie X. Deng (UCLA)
Vincent Wallace (University of Western Australia)
Zachary D. Taylor (Aalto University)
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Abstract
An efficient method for rapid, non-contact scanning of human cornea is presented. The optics utilize two, 101.6-mm diameter off-axis parabolic mirrors fed by a goniometrically scanned, planar mirror. An evaluation system at 650 GHz was built and demonstrated ~ 1.5 mm beam radius on target and ~ 30
o x 30
o field of view. The system was inspired by confocal laser scanning principles and represents a system design where image acquisition time is limited by SNR, not mechanical translation.
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