LED lamps light uniformity and glare views

When designing and talking about LED lamps, we tend to concern abour the uniformity and glare of the lights. This seems to be a criterion to tell whether a lamp is a good lamp.Actually hold a objective opinion towards it.

Two questions need to be treated differently for different LED light source lamps. One is the portfolio by a large number of small power LED light source, the other is integrated light source.

 1.Design for small power LED combination light source

A characteristic of the LED chip is small, even after encapsulation of the LED, its light exit surface relative to the fluorescent lamp is very small, the higher brightness. Close look directly indeed very dazzling, injury to the eyes. But use it for lighting source, usually lamps hanging in a higher position, plus the grille board short time direct vision does not have discomfort and injury. Moreover, it is usually not looked up to look directly at the ceiling lamps, inadvertently lifting the head will take your eyes off her, so, for its "dazzling", should not be too stressed about lighting design standards in quantitative indicators.

The LED used for illumination, and will usually consist of many of the LED combination so that the light source is composed by many point light. People seem to have a lot of points of light. General there are two points of light of the lamp condition, one is using a transparent mask, to be able to completely see the LED light point; a translucent mask (atomized, or stripes, or small surfaces lights) for the LED direct light illumination, the arrangement pitch of the LEDs will affect the light uniformity of the mask surface. This non-uniformity may see LED spot uneven than more people noticed.

Of course, for a non-wholly transparent mask uneven on the obvious spot, will be seen very bad feeling. The mask proper atomization process is necessary, but not be overkill, there is no need to pursue very good. Existing materials to achieve uniformity of the spot, under the existing conditions, greatly lost the light energy. Advocacy in today's era of energy-saving, environmental protection, we design LED lamps, should give due consideration to the Comfort, should also consider the luminous efficiency of the lamp.

Used by some companies is the transparent cover LED tube lights, you can see the spot densely arranged, but the grille in the ceiling fixture, the people-oriented point of view, and no glare feeling.

2.For the design of integrated light source

The light exit area of the combination of light of the same relative power of the small power of the integrated light source is relatively small, even a small, integrated light source of a high surface brightness. Integrated light source, must be a good solution to the glare problem. Integrated light source, it can be said it is a "point" light source. With the same luminous flux, compared with a portfolio of low-power LED light source, integrated light source is more dazzling, more a point light source. Therefore, the use of integrated light source lamps, more need to handle the glare problem. Especially indoor lighting not only handle the glare of the large-angle direction also properly handle the glare caused by the small angle of the lamp near my wife looked up, does not apply to the problem. Usually requires the use of a a matte or atomization cover. However, this will inevitably result in greater light loss.

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