The Point Source Emitter from Marktech is a semiconductor diode similar in structure to a standard LED. However, the light is emitted through a well-defined circular area, typically 25 µm ~ 200 µm in diameter. The light produced appears as a “spot” producing very narrow, almost parallel viewing angles. These two characteristics are well suited for applications which require a near-parallel light source and lower power, as compared with laser diodes. Point Source products also offer a much narrower spectral bandwidth of 20 nm ~ 50 nm.