UGR unified glare index in the lighting design can serve as a comfortable feeling of personal in for indoor lighting level indicator.
With the lighting quality attaches great importance to the degree of ascension, the UGR has become a hotly discussed topic.
But how to reduce the UGR, avoid dazzle, optimize the experience of people?
Black diamond series, LED canister light starting from the idea of research and development, is considered the traditional LED canister light glare, so can better anti-dazzle, reduce the UGR value, more realistic to adapt to all kinds of projects.
In the details.
What is a UGR?
UGR with interval number represents 10 to 30, the greater the number according to indoor light makes most people feel uncomfortable direct glare.
For example the UGR 19 represent 65% of the people inside the space does not have real feel have glare interference, but the remaining 35% of the people will feel the light cause discomfort to the line of sight.
UGR can only be used to calculate way, this is the shiny surface of lamps and lanterns and users or observer's point of view, location, and the relative relationship between background environment calculated results.
Certain regulations for regions such as the office, library, for example, ask its lighting UGR must be considered.
Lighting design professionals can use 117 - CIE international commission on illumination
1995 definition of glare rating scale.
The table to simplify the complicated formula, in order to check the design case of cloth lamp and lamp whether meet the UGR regulations.
Bring the UGR DIALux scale, however, scale limits need special attention.
The UGR value is in the standard space calculation single kind of lighting glare.
On the basis of glare rating scale formula, the highest floor reflection coefficient is 20%, 30% - wall
50%, 50% to floor
70%.
We often see in the building of the white wall or ceiling reflectivity is 75% to 90%, but has not been considered in scale in the formula.
Another limitation is parallel or vertical scale observers can only with the position of lamps and lanterns, but fewer in the lamps and lanterns of diagonal position.
In addition, the scale calculation of rectangular space, don't consider other shapes.
Generally speaking, the UGR form will appear in DIALux report, more details analysis can also use the DIALux UGR calculation point or UGR surface to calculate.
This can also see that, when choosing LED lighting lamps and lanterns, should not ignore the UGR value problem.
How to reduce the UGR, avoid dazzle, optimize the experience of people, all kinds of lamps and lanterns is a delegate with
LED spotlights must be the key to breakthrough.
LED spotlights, on the whole, complied with indoor lighting in low demand trend of UGR, avoid dazzle, optimize people's experience.
No matter adaptation degree on appearance, performance, light quality, etc. , are better than other similar products 80% of the market, gain the favour of a large number of the owner.
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