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HPG1900 GONIOPHOTOMETER (DOUBLE ARM VERSION )

HPG1900 is a type C goniophotometer. This system complies with the American Energy Star IES LM79 standard, European standard EN13032, GB/T9468 lamp distribution photometric test standard, etc.

Indoor light iso-illuminance curve:

⑴.Spatial iso-illuminance curve: The distribution of the iso-illuminance curve within a certain spatial area (a rectangle with a height of H and a width of d) in the plane C0 when the lamp is installed at a certain height.

⑵.Plane iso-illuminance curve: similar to the previous plane iso-illuminance curve, except that the installation height is set to 1 meter to display the iso-illumination curve.

              

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