Transmittance spectra

Transmittance spectra can be measured directly under sunlight —— reference light source. Then into the greenhouse measured again —— can get the exactly sunlight spectrum inside of the greenhouse.

Our instrument allows you to set 10 segments spectral’ range , each of segment can be see the size of the spectral and the spectral transmittance.

Sunlight through the atmosphere, some part of the spectrum will be different by the angle refracted, and the light intensity will be different too. So the sunlight spectrum and light intensity change at any time, sunlight and greenhouse’ angle change at any time.

Sunlight spectrum and light intensity change at any time in the greenhouse. Plus fly ash and climatic factors, transmittance measure is necessary.