Mar 18, 2020 09:46
4 yrs ago
10 viewers *
English term
sharp cut off louver
English to Polish
Tech/Engineering
Retail
Lighting
The lamp has the option of sharp cut off louver. Louver to zapewne raster (oświetleniowy). Ale jakiego typu? Wśród korzyści produktu wymieniono: It allows to better localize the light where you need it
Proposed translations
(Polish)
1 | oprawa światła o rozsyle (całkowicie) ograniczonym | geopiet |
Proposed translations
14 hrs
oprawa światła o rozsyle (całkowicie) ograniczonym
The light that shines within 10° below the horizon can undermine our night vision more than 100 meters away and can affect the aesthetic appearance of the night for more than a kilometre. Full cut-off fixtures (or Full-Shielded fixtures) limit the amount of light in this glare zone to
10% while Sharp Cut-Off fixtures limit it to
10% while Sharp Cut-Off fixtures limit it to
Reference comments
12 mins
Reference:
cutoff
A measure of glare control: the angle at which you can no longer see the lamp (or its image) in a fixture. Cutoff is measured from directly below the fixture; low cutoff mean you cannot see the lamp unless you look directly up into it. Sharp cutoff fixtures provide very precise glare control but may leave the top of the wall in shadow.
Discussion
Polish translation: oświetlenie z oprawami o ograniczonym rozsyle
https://www.proz.com/kudoz/english-to-polish/electronics-ele...
Oprawy klas G4, G5, G6 odpowiadają oprawom o rozsyle ograniczonym (G4, G5 – ang. Cutoff;
G6 – ang. Full Cutoff), oprawa klasy G6 nie emituje światła powyżej horyzontu.
Klasę D0 stosuje się dla opraw, w których źródło światła lub jego części mogą być bezpośrednio widoczne;
klasa D6 to oprawy o najmniejszym wskaźniku olśnienia przykrego.
- https://www.mississippimills.ca/en/live/resources/Illuminati... - page 3
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The counter argument is that, with a sharp cut-off fixture, the levels of glare are lower and hence lower illumination levels may be acceptable
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There is lots of light, little or no glare (especially with a full cut off or sharp cut off fixture), no sharp deep shadows. One is not blinded, one can see.
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All outdoor site lighting fixtures shall be of the sharp cut-off fixture type to direct all ambient lighting down to the ground rather than laterally or skyward.
Sharp Cut-off Louver
https://www.villalighting.com/ASSETS/DOCUMENTS/ITEMS/EN/1182...