Units of measurement for lighting and light
Heading #3 | |||
|---|---|---|---|
Luminous flux | Φ | Lumen | The luminous flux is weighted by the spectral sensitivity of the eye, the radiant power of the visible light range of a single light source. |
Luminous intensity | I | Candela (cd) I = f / w | Luminous intensity describes the light source in a certain direction the intensity or intensity of the light emitted. |
Illumination intensity | E | Lux (lx) E = f / A | The luminous intensity is the luminous flux applied to the area m2 of the illuminated surface. |
Luminance | L | (cd / m_) L = I / A (L = I / A cos f) | Luminance is the emission of the force of light in a particular direction, such as the brightness of surfaces. Luminance Indicates the transition from a light surface to a dark one. A sharp shift can make it difficult to concentrate in a work environment. |
Color temperature | K | Kelvin K CIE 17.4 | The concept of color temperature, the division into cold and warm light, is used to define the color of a radiation source. <4000k >4000K = cold light. The color temperature is defined in relation to the absolute temperature of the black body. |
Color rendering index | Ra | Ra index CIE 17.4 | The color rendering index tells you the ability of a light source to reproduce colors naturally on a scale of 0-100. All 8 colors are examined. |
Light efficiency | B | Lm / WH = f / P. | Light efficiency is the luminous flux produced by a light source divided by the power of the light source. When other components of the luminaire are included in the comparison, we talk about the light efficiency of the device. |
Dazzle | CIE-31 | The circumstance where it is prevented from seeing the details or becomes uncomfortable to look at. Divided into bullying glare and blocking glare. | |
Average life expectancy | hours (h) | The average lifespan is the time when 50% of a larger number of products cease to function. | |
Service life | hours (h) | Service life is the time that 80% of the total amount of light remains. | |
Economic life | hours (h) | Economic life is the time that 70% of the total amount of light remains. |
Lighting range
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