Illuminating surface definition

Illuminating surface means an orthogonal projection of the lamp in a plane perpendicular to its axis of reference and in contact with the exterior light-emitting surface of the lamp. For a retro-reflector, the light-emitting surface is considered to be delimited by planes contiguous to the outermost parts of the retro-reflector’s optical system.
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Illuminating surface of a lighting device means the surface as defined in paragraph 2.7. of UNECE regulation No 5317;
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Illuminating surface means the orthogonal projection of the lamp in a plane perpendicular to its axis of reference and in contact with the exterior light-emitting surface of the lamp, this projection being bounded by the edges of screens situated in this plane, each allowing only 98 % of the total luminous intensity of the light to persist in the direction of the axis of reference in the case of rear position lamp, parking lamp, and of main-beam headlamp, dipped- beam headlamp, front fog-lamp, which are without reflector.
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Examples of Illuminating surface in a sentence

  • Direction of visibility IO Inner optical part LG Light guide L Outer lens R Reflector S Light source X Not part of this function F1 Function one F2 Function two Apparent surface based on light-emitting surface Screens; other positions of the screens are possible Illuminating surface Resulting illuminating surface over all possible screen positions, e.g. for the determination of maximum or minimum area specification.


More Definitions of Illuminating surface

Illuminating surface means the orthogonal projection, in a transverse vertical plane, of the effective surface from which the light is emitted. For a reflex-reflector, the effective surface is the visible surface of the reflex-reflecting optical unit.
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Illuminating surface means the orthogonal projection of the full aperture of the reflector, in the case of the main-beam headlamp with reflector, dipped-beam headlamp with reflector, front fog-lamp with reflector, or in the case of headlamps with an ellipsoidal reflector of the projection lens, on a transverse plane. If the light emitting surface of the lamp extends over part only of the full aperture of the reflector, the projection of that part only is taken into account.
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Illuminating surface means for lights, the visible surface from which light is emitted and, for reflex reflectors, the visible surface from which light is reflected.
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Illuminating surface of a lighting device means the surface as defined in paragraph 2.7. of UNECE Regulation No 536 as stated in the component type-approval documentation;
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Illuminating surface means the orthogonal projection, in a transverse vertical plane, of the effective surface from which the light is emitted. For a reflex-reflector, the effective surface is the visible surface of the reflex- reflecting optical unit.
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Illuminating surface of a lighting device means the surface as defined in paragraph
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Related to Illuminating surface

  • Pervious surface means an area that releases as runoff a small portion of the precipitation that falls on it. Lawns, gardens, parks, forests or other similar vegetated areas are examples of surfaces that typically are pervious.

  • Impervious surface means a surface that has been covered with a layer of material so that it is highly resistant to infiltration by water.

  • Surface water means all water which is open to the atmosphere and subject to surface runoff.

  • Surface waters means water on the surface of the ground where water does not usually accumulate in ordinary watercourses, lakes, or ponds. This includes any waterborne objects.

  • Building site means a plot of land held for building purposes, whether any building is actually erected thereupon or not, and includes the open ground or courtyard enclosed by, or adjacent to, any building erected thereupon;