Illumination definition

Illumination means the act of lighting up a sign by way of an artificial light source located within, on or external to the sign, the brightness and intensity of which are measured in lux and nits;

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Illumination means the act of lighting up a sign by way of an artificial light source located within, or external to, the sign and does not include flashing or intermittent lighting;

Illumination or “illuminated” means a source of any artificial or reflected light, either directly from a source of light incorporated in, or indirectly from an artificial source, so shielded that no direct illumination from it is visible elsewhere than on and in the immediate vicinity of the sign.

Examples of Illumination in a sentence

• Illumination shall be not less than 2 foot-candles, with a uniformity not greater than 4 to 1, measured on the parking surface.

• The Engineer shall refer to TxDOT’s Highway Illumination Manual and other deemed necessary State approved manuals for design of continuous lighting and safety lighting for all conventional, high-mast, and underpass lighting.

• Illumination angles, sensor viewing angles, species, stand density, and image quality can all affect the feasibility of identifying individual tree canopies for both automated and manual methods.

• State and Contractor (collectively the “Parties”) entered into that certain Contract No. 04616 for Illumination, Traffic Signal and Intelligent Transportation Systems Equipment dated effective as of December 23, 2016 (“Contract”).

• D = Observation distance from and from beyond which the illuminating surface appears to be continuous  = Angle of divergence β = Illumination angle.

More Definitions of Illumination

Illumination means lighting sources installed for the primary purpose of lighting a specific sign or group of signs.

Illumination means any sign with an artificial light source incorporated internally or externally for the purpose of illuminating the sign.

Illumination means radiant energy evaluated according to its capacity to produce visual sensation.

Illumination means the lighting of any sign by artificial means;

Illumination axis (symbol I)" means a line segment from the centre of reference to the light source.

Illumination means any sign with an artificial light source incorporated internally or

Illumination means the act of lighting up a sign by a source of light, including an artificial light connected to a sign, or by a light focused upon or chiefly directed at the surface of the sign by way of an artificial light, or by a light placed within a sign so as to illuminate the sign from behind.