Figure 5. a) Diagram of hand veins imaging using the high-power NIR cpc-LD. b) The red line (in Figure 5f,g,j) from top to bottom pixel brightness value varies with pixel position. c-j) Imaging of hand veins with varying LD blue light input power.
Laser diodes (LDs) driven lighting is supposed to be the next-generation lighting, and red CaAlSiN3: Eu2+ (CASN) phosphor is still eager for high-quality LDs white lighting. Utilizing glass with a...
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