9/14/2023 0 Comments Max lantern bugsThe tables below, which are based on the standards established by the IES, show the thresholds for each subzone. The highest rating of a subzone is considered the overall rating for that zone, and these readings are compiled into the BUG lighting classification: for example, B3 U1 G0. The subzones are individually rated on a scale from 0 to 5, going from lowest to highest luminous flex. FVH: Forward light Very High (80-90 degrees). BVH: Backlight Very High (80-90 degrees).Every zone of stray light is divided into subzones as follows: The BUG system might seem complicated at first, but it actually has an intuitive setup. Glare can be reduced by using lights that aren’t as bright or by selecting a light with a distribution pattern that’s appropriate for your intended use. It is especially dangerous when operating a motor vehicle at night. This light, which can be reflected or directed, makes it very difficult for people to see - especially when it shines directly into their eyes. Glare, or forward light, is sometimes called “offensive light” because that’s exactly what it does for most people. The IDA is particularly concerned with limiting uplight so more people can enjoy the stars at night. This will also reduce energy use and cost. Skyglow can be cut down by fully shielding your fixture and by making sure it’s pointed towards the ground. It will also block out the view of the stars and moon. In exterior lighting, any uplight is wasted light, as it is not going towards where people are. This stray light is responsible for the light pollution often seen in large cities. Uplight is the light that shines upwards from a fixture towards the sky - hence the alternate term “skyglow”. In order to get more light to head towards the front, manufacturers can use optics, reflectors, or glare shields to redirect it. But when you can’t sleep at night because of the light shining out from behind a streetlight into your room, you might think twice about enjoying backlight. Backlight is great when you’re talking about improving the visibility of wristwatches or viewing your smartphone. This light usually protrudes outwards or towards the ground, illuminating an area that is not intended to be illuminated. But each is noticeably worse for some tasks than others, and the BUG rating helps to quantify this.īacklight, also known as light trespass, refers to the light emitting from behind a fixture. Although each does have positive uses in certain applications, they are generally considered “bad” light, as they often are not light you can practically use. All three are forms of stray light that can be emitted from a fixture. In the case of these ratings, the word “BUG” is an acronym for Backlight, Uplight and Glare. It was first added to the Luminaire Classification System (LCS) in 2009, replacing the previous system that was mainly geared toward street lights. The system was developed by the Illuminating Engineering Society (IES) and the International Dark Sky Association as a way of evaluating any outdoor light fixture. The BUG lighting classification system is a useful measurement of nighttime luminaire performance. Using the BUG exterior system can help you choose the best exterior lighting for street lights, area lights, walkway lights, wall packs, and other systems while reducing wasted light and light pollution. But that lighting needs to be usable, as excessive amounts of stray light will send illumination every place except where you need it. When the sun goes down, it is the only thing separating you from total darkness. Quality lighting becomes even more important when you’re outdoors. BUG Rating System & Nighttime LED Lighting.LED Lifespan: Lumen Maintenance & Your Light Fixtures.Arranging Downlights for Wall & Accent Lighting.Arranging Downlights for General Lighting.RGB Lighting for Corporate Use & Branding.LED Chip Styles: What’s Best for Your Application?.LED Rope Lights And More Merges with Take Three Lighting.LED Rope Lights: Vertical or Horizontal?.What's the Difference Between Energy Star and DLC?.UL/ETL Ratings and Linear Lighting Products.The Incandescent Filament Bulb: Gone in a Flash.
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