Patent ID: 9651221
Date: 2017-05-16
CPC Classifications: F21V,G01N

Claim:
1. An optical imaging system comprising: a substrate having placed thereon a specimen dyed with a fluorescent material; a plurality of dimer nanopillars formed on the substrate; and a light source unit configured to provide a light source to the substrate, wherein the light source unit provides an incident ray to the substrate from a first light source to excite the fluorescent material, and afterwards turns off the first light source and activates a second light source and a third light source simultaneously to provide incident rays to the substrate, the second light source and the third light source provide incident rays having a second wavelength, the second wavelength configured to turn off an emission of light by the fluorescent material, a difference between incident angles of the incident rays provided by the second light source and the third light source is 90 degrees, the incident ray provided by the second light source and the incident ray provided by the third light source have a phase difference of a half wavelength, and the incident ray provided by the second light source is provided at an angle of +45 degrees with respect to the substrate, and the incident ray of the third light source is provided at an angle of −45 degrees with respect to the substrate.