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LaiPen LP 100


LaiPen LP 100 measures Leaf Area Index (LAI), which is defined as the one-sided green leaf area per unit ground surface area (LAI = leaf area / ground area, m2 / m2) in broadleaf canopies. The LaiPen LP 100 calculates LAI and other canopy structure attributes from solar radiation measurements made with a wide-angle optical sensor. Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is computed using a model of radiative transfer in vegetative canopies.

The LaiPen was designed by scientists and engineers to provide its user quick and reliable results. Unlike in other similar devices measuring LAI, the LaiPen LP 100 is accurate in most daylight conditions and does not require cloud cover or specific sun angles for its proper performance.

LaiPen LP 100 can work in two operation modes: 
- Single sensor mode - reference measurement is taken before, after or during measurement with the same instrument 
- Two sensor mode - second instrument is used for automatic logging of reference signal

LaiPen LP 100

  • Leaf Area Index (LAI):

  • Photosynthetically Active Radiation (PAR): 
    Photosynthetically Active Radiation measured as Photosynthetic Photon Flux Density (PPFD)

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