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- W2000730410 abstract "The contour integration formula, E=L/2∫s cosδ·dω for calculating the illuminance of a flat surface source is composed of cosδ and dω, which are not easy to solve. Based on analysis of a three dimensional model, the above formula was modified into the following formulae:(1) When the surface source is parallel to the illuminated plane:E'=L/2∫ban/l2)dx(2) When the surface source is inclined to the illuminated plane by ∠β:(E')=L/2cosβ∫ban/l2dx(3) When the surface source is perpendicular to the illuminated plane:((E'))=-L/2z∫ba1/l2dxwhere E'=the illuminance component of the interval A to B on the boundary of the flat surface source, n=the length of an intercept on the y axis by the tangent to the boundary, l=the distance between the illuminated point and the minute segment AB on the boundary of the flat surface source. Since n and l2 in these formulae can easily be obtained from x, y and z, all calculations of the illuminance of a flat surface source of an arbitrary shape that can be expressed by x and y can easily be obtained from the sum of the illuminance components E'." @default.
- W2000730410 created "2016-06-24" @default.
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- W2000730410 date "1983-01-01" @default.
- W2000730410 modified "2023-09-26" @default.
- W2000730410 title "Illuminance calculation for an arbitrarily shaped flat surface source" @default.
- W2000730410 doi "https://doi.org/10.2150/jlve.7.2_18" @default.
- W2000730410 hasPublicationYear "1983" @default.
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