Betekenis van:
illuminant

illuminant
Zelfstandig naamwoord
    • something that can serve as a source of light

    Hyperoniemen


    Voorbeeldzinnen

    1. ‘Colour rendering’ (Ra), which is the effect of an illuminant on the colour appearance of objects by conscious or subconscious comparison with their colour appearance under a reference illuminant;
    2. ‘Colour rendering’ (Ra), which means the effect of an illuminant on the colour appearance of objects by conscious or subconscious comparison with their colour appearance under a reference illuminant.
    3. This shall be verified by the visual comparison test indicated above, the control field being illuminated by a light source of which the trichromatic coordinates differ by 0,01 from that of standard illuminant A.
    4. When the retro-reflecting device is illuminated by ICI standard illuminant A, with an angle of divergence of 1/3° and an illumination angle of V = H = 0°, or, if this produces a colourless surface reflection, an angle V = ± 5°, H = 0°, the trichromatic coordinates of the reflected luminous flux must be within the following limits: ≤
    5. Clear retro-reflecting devices must not produce a selective reflection, that is to say, the trichromatic coordinates ‘x’ and ‘y’ of the standard illuminant ‘A’ used to illuminate the retro-reflecting device must not undergo a change of more than 0,01 after reflection by the retro-reflecting device.