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Source:MaChen Yushengyuan New energy Co., Ltd. Time:2012-05-03 17:51:37 |
Luminous flux: the symbol of Φ and units lumen Lm, indicating the amount of light emitted per second of the luminous body, the sum of the luminous flux
Light intensity: Symbol and unit candela the cd on the luminous flux emitted by the luminous body in the specific direction of the unit solid angle
Illumination: symbols, units of lux Lm/m2 irradiation of the luminous body of the luminous flux per unit area of the illuminated objects
Brightness: Symbol L unit Benny off cd/m2 description of the luminous flux of the luminous body in the specific direction of the unit solid angle per unit area
Luminous efficiency: the units of lumens per watt Lm / w, indicating electric light source that converts electrical energy to light the ability of the luminous flux emitted divided by power consumption to represent
Average life expectancy: in hours, indicating the number of hours refers to the number of bulbs to 50 per cent of the number of damaged
Economic life: the units of hours, taking into account the damage to the light bulb and output attenuation of the beam conditions, the beam output is reduced to a specified number of hours. This ratio to the outdoor light source 70 per cent
For indoor lighting such as fluorescent lamps, compared to 80 per cent.
Light hue of the color temperature: the light emission color of the light and blackbody radiation at a temperature of blackbody temperature as the light source's color temperature, color temperature, light color, color temperature 3300K less stable atmosphere, a warm feeling ; color temperature 3000 - 5000K for the intermediate color temperature, there is a refreshing feeling; cold color temperature above 5000K. Different color for different light sources make the best environment, color temperature> 5000k: light color (blue white) for the cool type, cold atmosphere; color temperature 3300-5000K: light color for the middle (white), sparkling atmosphere effects ; warm (reddish white color temperature <3300K: light color), stable atmosphere, the color temperature and brightness of high color temperature light source irradiation, such as brightness to an atmosphere of yin; under the irradiation of low color temperature light source, brightness too high will give people a feeling of sultry.
The contrast of light and color in the same space using the two kinds of light color light, the contrast there will be a level effect, light and color contrast, brightness level at the same time, the level of the light color is available.
Color: light color to indicate the color rendering index, which represents the objects in the optical color than the reference light (sunlight) lighting color deviation can more fully reflect the color characteristics of the light source. Color are two
Faithfully significant color: correct performance material original color need to use a color rendering index (Ra) high light, its value is close to 100, the color best. The effect of color: a distinct emphasis on a particular color performance of life in the United States can take advantage of the additive method to enhance the effect of color. ; The irradiation of low color temperature light source, make red more vivid; N-color temperature light source irradiation, so that the blue with a cool feeling; the irradiation of high color temperature light source, so that the objects feel cold.
Light and radiation: light is electromagnetic radiation to the human eye, the visual nerve into the light, that is to be part of the spectrum visible to the naked eye. Kind of beam wavelength range between 360 to 830nm, only a portion of the spectrum of electromagnetic radiation is very small. The temperature is much higher than 50Hz work temperature, resulting in a higher color temperature of white color table and better color rendering.
Luminous flux: Φ: lumen [lm] the eyes of the light emission and reception of the sum of the energy is the luminous flux (Φ).
Light intensity l unit: candela [cd] In general, the light in different directions and fired, and the varying levels of intensity. The emission intensity of visible light in a particular direction angle is called the light (l).
Light intensity (l) refers to the unit of luminous flux emitted in a particular direction angle (w) (Φ) illumination E: lux [lx]
Illuminance (E) is the coefficient of the ratio between the luminous flux and the irradiation area. 1 lx, referring to 1-lm luminous flux is evenly distributed in the bright area lm2 plane.
Grayscale: Unit: candela / square meter [cd/m2 and] that the eyes see objects the reflected light intensity from one direction.
The luminous efficiency: Unit: lumens per watt [lm / W light efficiency means the efficiency of energy into electrical energy.
Color temperature: Unit: Kelvin [K] the same as the color of light emitted by the color "black body" radiation at a temperature of the blackbody temperature is called the color temperature of the light source. The higher the temperature of the blackbody spectrum of the blue component is more, the red component is the less. For example, the incandescent light color is a warm white, the color temperature is 2700K, the color temperature of daylight fluorescent method is 6000K.
Light and color: the color of light is actually the color temperature. To three main categories: warm <3300K, the color of the middle of 3300 to 5000K, due to the spectral composition of light makes a difference, so even if the same light color, light color may be different.
The efficiency of lamps (also called light output coefficient) is a measure of lighting to use energy efficiency standard, it is the ratio between the light of the lamp output energy and light output lamps light energy.
Color: In principle, the artificial light and natural light, people's eyes are able to correctly identify the color of things, of course, depending on the location and purpose of the lighting. Light source for object color showing the extent said
Color. Often called the "color rendering index (Ra) of the color refers to the true color of things (their color) with a standard
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