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How can you block UV rays from linear fluorescents?
Terms & Conditions of Use
Randall Whitehead answers how you can block UV rays from linear fluorescents and how to make LED lighting appear warmer.
- By Randall Whitehead, IALD
Q: “Do you know of a device that can be used to block the UV rays from linear fluorescents installed in a clothing store? My customer is complaining that the lights damaged clothing stored in boxes on a shelf near the ceiling. Are there any special diffusers or tube guards that would help?”
A: Other retailers, including lighting showrooms, may carry soft goods that are sensitive to UV, and may want a little protection. Fortunately, there are fluorescent tube sleeves that filter out UV. As an example, take a look at Lee Filters’ UV absorption filter #226. I recommend that you also purchase the polycarbonate tubes that fit around the actual lamps. Not only do they make it easier to install or change the filters (think fun colors for the holidays), but they also protect the lamps from shock and contain the pieces if the lamp is broken. Lee Filters is a British company, but it sizes everything in inches and feet. You will need to find out from your client, though, what size fluorescent lamp she is using (T5, T8 or T12) in order to get the right size product. A few companies, including Malcolite and Pegasus Association Lighting, offer these tubes with the UV filter built in.
Q: “The LED linear task lights I have are a little on the cool side, color-temperature-wise. Since they have a very long lamp life, what can be done do to warm up the color, instead of replacing the fixtures?”
A: If there is a little room behind the lens, I might suggest using a theatrical gel material, which is really polyester MylarT. Lee Filters and Rosco Filters manufacture this material. It is also available through theatrical supply houses. The challenging part is to choose a color that warms up the light to your particular satisfaction. Some people like their warm light to be in the yellow range, while others prefer something in the peachy range. It also depends on the color temperature of the LEDs you have. They could be 4K, 5K or even 35K and still feel cool in color when compared to incandescent. I have a linear task light in my office that is 5K. I used the #154 Pale Rose by Lee to produce a hue I like. It brings a glow to my cheeks as if I’ve been freshly pinched by Aunt Vivian.
Source: Residential Lighting August
2008
Copyright © 2010 Scranton Gillette Communications
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