Photo credit Nathan Sanks.
While some clients have compared the ivory-frosted luminaires to ripe pieces of hanging fruit, others have found their burnished aluminum hanging straps reminiscent of leather. Whatever images it may evoke, a new custom version is now available exclusively at Design Within Reach. There, the sleek aluminum mast is 52 inches long, which, for most dining room tables, could be just the right fit.
Better looking and longer lasting, Branch's aluminum body is better for LED longevity and anodized to match its iconic perforated shade. Easier installation—snap fit back plate secured by thumbscrews makes installation easier and fewer fasteners. Matching anodized end caps provide durability with the same overall dimensions.
For updated images or to replace a sample, contact your sales representative.
LED lighting offers many benefits and features that were difficult, if not impossible to offer with other lighting technologies. Many of the obvious benefits, such as substantial operating energy and cost reductions, longer life, and lower overall heat generation are generally well known. Another feature that allows for dramatic appearance and productivity benefits now and in the future, involves the color temperature of the light produced by LEDs.
"White light" is commonly described by its color temperature. Measuring the hue of "white" light started in the late 1800s, when the British physicist William Kelvin heated a block of carbon. The block of carbon changed color as it heated up, going from a dim red, through various shades of yellow, all the way up to a bright bluish white at its highest temperature. The measurement scale for color temperatures, which was named after Kelvin as a result of his work, was based on Centigrade degrees. However, since the Kelvin scale starts at "absolute zero", which is -273°C, you can get the equivalent Centigrade temperature (compared to the visible colors of a heated black body) by subtracting 273 from the Kelvin color temperature.
The term used in general illumination is correlated color temperature (CCT). CCT relates to the color of light produced by a light source, and uses the Kelvin temperature measurement scale (SI unit of absolute temperature). It describes the relative color appearance of a white light source, indicating whether it appears more yellow/gold ("warm") or more blue ("cool"), in terms of the range of available shades of white.
Many people are now familiar with the idea of a "warm" white or a "cool" white being offered by fluorescent and other light bulbs. These bulbs have vastly different color temperatures. The "warm" bulb often has a color temperature of 3,000K and casts a more orange/red light on objects. Because you normally associate warmth with red or orange objects, this accounts for the "warm" descriptive name, even though it is a cooler (lower) temperature on the Kelvin scale. A "cool" white bulb commonly has a color temperature of 4,100K and higher on the Kelvin scale. This is in the low range of blue color, similar to ice, therefore earning the "cool" description.
So with choices now in lighting color temperatures, the questions that often arise are: "How do I know what color temperature I should choose? Should I have a certain color temperature in my warehouse, a particular color temperature in my offices, and then a specific color temperature in my lobby?" In some cases the answer may be the same color temperature for all of those applications, or it could indeed be different for each depending on the desired and/or required effect.
A flame, for instance has low color temperature (around 2000K), and looks yellowish and warm, while daylight is around 6000K (as is a daylight fluorescent light) and looks rather bluish. So a general suggestion for 'invitingness' would be rather warmish color temperature (and definitely uniform color temperature of lights in a room) and lighting design that allows for brighter areas separated by shade.
What used to be a fairly straight forward proposition dimming incandescent fixtures has been made more complicated by the fact that the new LED technology is different about how it is dimmed.
All RBW standard spec light fixtures work with Forward Phase Dimmers, also known as TRIAC dimmers, which operate on 120V AC (standard residential wall voltage in the US and Canada). TRIAC dimmer controls are the most commonly installed dimmers and are traditionally used to dim older incandescent or halogen light sources. We recommend these controls for use with all RBW LED products. All Lutron C-L series controls have a small adjustment dial on the side of the housing which allows for fine tuning of the dimming range of the light fixture.
Used as an early fluorescent dimming system and still used today, 0-10V dimming has been adapted to become a reliable LED dimming control protocol.
0-10 V is one of the earliest and simplest electronic lighting control signaling systems; simply put, the control signal is a DC voltage that varies between zero and ten volts. The controlled lighting should scale its output so that at 10 V, the controlled light should be at 100% of its potential output, and at 0 V it should at the lowest possible dimming level.
*optional for Branch, Gala and Queue only
Low-voltage lighting uses a transformer to reduce a 120VAC line voltage to 12VAC or 24VAC. This lower voltage is then used to power an incandescent low voltage lamp. RBW fixtures are incompatible with low voltage dimming.