Loss-free Oval and Round Zoom Spotlights from ERCO
23. September 2019
Photo © ERCO GmbH
Just as painters need brushes with different widths, lighting designers need luminaires with different beam angles. The contrast between narrow, precise lighting accents and floodlighting is a central means of design with architectural and presentation lighting. Flexibility through interchangeable lens optics is good, but users often wish for even more flexibility in the form of spotlights with adjustable zoom optics. ERCO's new zoom floodlights solve such tasks with an innovative functional principle: Their light beam is infinitely adjustable due to control via special lens technology that is loss-free and highly efficient. ERCO zoom spotlights are not only available as zoom spot with rotationally symmetric light distribution, but also as a zoom oval with axially symmetric light distribution to, for example, precisely illuminate sculptures — an additional advantage compared to conventional zoom spotlights.
Lighting practitioners know such situations well: When commissioning and lighting an exhibition or redecorating a retail outlet, they usually climb the ladder more than once until the lighting accent "sits" precisely on an object. Even those who are in the fortunate position of having a sufficient pool of spotlights with different beam angles — or interchangeable lens optics, as is possible with ERCO — wish, by at least the third change, for spotlights with universal, infinitely variable zoom optics. The potential of such zoom spotlights in museums, galleries, and retail spaces is enormous. Each light beam is individually and precisely adjusted to the situation, the number of overall luminaires or interchangeable lenses is reduced, and a lot of time is saved when commissioning. But the quality of light and efficiency of the zoom spotlights must also be on a par with fixed beam angle spotlights. ERCO developers have achieved this with new zoom spotlights, thanks to light control via lens technology.Maximum efficiency
The innovative zoom technology fits into a surprisingly compact, rotatable optical attachment at the light emission aperture of the spotlight, the length of which does not change when zooming. One turn of the ring is sufficient to adjust the beam angle as desired. With zoom spot the zoom range is from spot (15°) to wide flood (65°), and with zoom oval from 19°x71° to 60°x74°. When zooming, the lenses bundle the light beam without loss of light, which increases illuminance in the spot position by a factor of more than ten and offers ideal conditions for rich-contrast, precise accentuations. In each zoom position, the entire LED luminous flux is projected onto the target surface. ERCO zoom floodlights set the standard in this product segment in terms of both efficiency and uniformity of the light beam.The variable "sculpture lens"
With its new zoom technology, ERCO provides not only rotationally symmetric distribution, but also for the first time variable axially symmetric light beams. These spotlights with zoom oval light distribution are suitable for applications where previously sculpture lenses or the oval flood characteristic were used. Zoom oval makes it possible to adjust both the proportions and the position of the oval — ideal for the precise illumination of objects with elongated proportions such as sculptures, mannequins in shop windows, panorama formats, and lettering.Zoom is used in many spotlight series
The stringent system of the ERCO range makes it possible to offer the new zoom technology right from the start in a whole range of proven spotlight families: Optec, Pollux, Parscan, and Oseris are available as zoom spotlights in different sizes. As with previous light distributions, zoom optics can be combined in a variety of ways with the familiar options from the ERCO luminaire system in terms of light colors, wattages, and dimming variants.
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