Improving Cellphone Microscopy Imaging With Contact Ball Lenses
PROCEEDINGS OF THE 2019 IEEE NATIONAL AEROSPACE AND ELECTRONICS CONFERENCE (NAECON)(2019)
摘要
It is shown that the resolution of cellphone-based microscopy can be improved with the use of millimeter-scale ball lenses with index n=1.85 placed in contact with fluorescent (FL) objects represented by dye-doped microspheres. Using the virtual imaging through such ball lenses, the resolution improvement from similar to 35 mu m to similar to 2 mu m is achieved over a field-of-view of about 0.1x0.1 mm(2) Further improvement of resolution and field-of-view can be expected with optimization of parameters of the contact ball lenses that can lead to wide applications of the proposed technology in mobile biomedical imaging.
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关键词
near-field microscopy, microlens, fluorescent microsphere, solid immersion lens
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