Calculation of Direct Illuminance
※Case:Flat String Shaped Light Source that the width is small enough compared with length.

Keyword

Direct Illuminance,Flat String Shaped Light Source,Luminous intensity.

Reference

[1]:『照明ハンドブック第2版』(照明学会).

Remarks

・En=I/(2*p^2)*(α+sin(α)*cos(α)).
・Eh=En*cos(θ).
・Evx=En*sin(θ).
・Evy=I/(2*p^2)*(sin(α))^2.
・Fig1:Reference[1].

History

・2014/08/04:.
・2009/10/21:Upload.