Figure 8

Schematic of the fluorescence spectral imaging system with millimeter-scale field of view and micron-level resolution. The 488 nm laser was used for 2-NBDG imaging while the 555 nm laser was used for TMRE imaging. BX: Beam expander; BS: Beam splitter; CCD: Charge-coupled device; DBS: Dichroic beam splitter; LCTF: Liquid crystal tunable filter; OBJ: Objective lens; P: Polarizer; RL: Relay lens; SF: Spatial filter; SLM: Spatial light modulator; TL: Tube lens.