Ring lights emphasize detail and hide shadows simply by their inherent circular design. The soft light hides wrinkles and blemishes making it perfect for portraits and even make-up tutorials.

The white bulbs inside of a ring light can be switched out for various color bulbs in order to generate different effects. Mess around with this. This is especially useful for cinematography.

The first investigations on UV emitted by artificial source aimed at clarifying the relationship between the use of fluorescent lamps and the incidence of cutaneous melanoma.3 Since then, there has been a growing concern with the possibility of increased risk for skin cancer in individuals exposed to indoor lamps.

Originally used for medical purposes, the ring light has now been discovered to assist in many more creative endeavors. So what is it, and how can you use it for your own projects?

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We’re in a golden age of TV writing and development. More and more people are flocking to the small screen to find daily entertainment. So how can you break put from the pack and get your idea onto the small screen? We’re here to help.

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MAILING ADDRESS: Ida Alzira Gomes Duarte, Rua Doutor Cesário Motta Júnior, 112, Vila Buarque, 01221-020 - São Paulo - SP, Brazil. E-mail: idaduarte@terra.com.br

Another point to be mentioned is that, currently, in every continent, discussions regarding the rational use of energy are increasingly frequent and a priority in government agendas. In this scenario, the tungsten filament incandescent lamps (common) are being replaced, both for residential and for commercial use, by compact fluorescent lamps, due to their low energy consumption.6

How to cite this article: Duarte IAG, Hafner MFS, Malvestiti AA. Ultraviolet radiation emitted by lamps, TVs, tablets and computers: are there risks for the population? An Bras Dermatol. 2015;90(4):595-7.

Alyssa Maio is a screenwriter from New Jersey, now living in Los Angeles. She works as a copywriter here at StudioBinder.

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As in this study there was no emission of radiation within the spectra considered UVB and UVA, it was concluded that the lamps and monitors of commonly used electronic devices do not emit ultraviolet radiation that poses a risk to the population.

The frequent human exposure to various types of indoor lamps, as well as other light sources (television monitors, tablets and computers), raises a question: are there risks for the population? In the present study the emission of UVA and UVB radiation by lamps and screens of electronic devices were measured in order to determine the safe distance between the emitting source and the individual. We concluded that the lamps and electronic devices do not emit ultraviolet radiation; so they pose no health risk for the population.

The emissions of UVA and UVB radiation by the several lamps and screens of electronic devices were measured at 5cm and 20 cm distance from the source. In order to do that, 2 photometer brands were used:

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Readings were taken 60 seconds after the sources began to operate, with the photometers at the measuring position for 15 seconds.

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As most individuals are exposed to the most varied types of lamps used indoors, as well as to other light sources, such as TV monitors, lets and computers, it is important to determine the radiation levels emitted by them and the safe distance to be kept between the emitting source and the individual.

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The ring lights main purpose is to cast an even light onto the subject. This reduces shadows in the face and minimizes blemishes, while illuminating the eyes. This is why ring lights are commonly used in portraits, glamour shots, or even videography capturing only one subject.

Get up close and personal with the ring light for macro work. Use a lens ring light to capture a more front focused light.

With the objective of quantifying the emission of UVA and UVB radiation by different light sources used in a residential environment, a selection was made of the most used lamp types and brands in the Brazilian market:

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It has already been demonstrated that all lamps emit UV radiation, whether they are quartz halogen, tungsten filament incandescent, tube fluorescent or compact fluorescent (mainly the latter).6 However, the plastic materials used as light diffusers could block the passage of radiation.7,8

Published articles attempted to show the action of UV radiation in inducing photodermatoses, but the results are controversial, mainly regarding the spectrum and the quantity of UV radiation emitted by the lamps.6

In 1990, Diffey indicated the main situations of risk for UV radiation presented by artificial sources: artificial tanning chambers, medical and dental phototherapy, industrial photoprocesses, sterilization and disinfection, laboratory investigations, insect traps and indoor lamps in general.4

The analysis of studies published on the subject shows that none of them demonstrated detectable emission of UVA radiation (320-400nm). As regards UVB, the studies that evidenced detectable emission considered the spectrum from 280nm onward, and not the UVB 290-320nm range.

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Whillock et al., in 1990, concluded that the UV emission of compact fluorescent lamps would not constitute a risk when at more than 65 cm of distance. In recent study on the same subject, however, it was found that those with a double envelope (encapsulated) offered greater protection. Furthermore, the glass present in the envelope also confers greater protection. Thus, even if the lamps emit a small quantity of UVB, this irradiation is totally blocked by the glass in them.9,10

Later on there was research about radiation emitted by halogen lamps, as well as about exacerbation of photosensitive dermatoses after exposure to artificial sources.5 After demonstrating that proximity to the emitting source would increase the risk for these dermatoses, the Artificial Optical Radiation Directive, formulated by the European Parliament, recommended that occupational exposure to UV radiation be limited to the effective irradiation of 1 mW/m2 in an 8h period.6

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The main function of the ring light is to lessen shadow and diffuse light evenly on the subject. Because of its ability to distribute light so evenly, it is great for close-up shots, whether photography or video.

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Results: In this study, there was no emission of ultraviolet radiation within the spectra considered UVA and UVB by the lamps and TV monitors, computer and tablet, independent from the variables: type, brand and distance (at 5 and 20 cm of distance from the source).

You’re a videographer or photographer learning more about what goes into lighting a shot. You know it takes years to become a skilled filmmaker, but maybe you want quality images and well-lit footage fast. The ring light can enhance the quality of light in your images and this post explores some reasons why you should consider it. So, what is a ring light? And why do so many content creators and filmmakers, rely on it?

As we've seen, ring lights are not only versatile, they provide opportunities for dynamic and classy images. These benefits include catchlights — that little glimmer we see reflected in the eyes. Now that you're up to speed on ring lights, let's take a closer look at how they can help make the eyes POP with depth and texture.

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For the same reason as above, capturing such balanced light produces a halo around the subject, and illuminates features bringing a professional-level and cinematic look to the shot. YouTubers often use ring lights because they’re inexpensive and can enhance their facial features throughout the entire video.

Photoprotection has been increasingly discussed. The importance given to this subject has progressively increased since the publication of the first studies that associated ultraviolet radiation (UV) with carcinogenesis and photoaging.1,2

Evidence from an experimental study revealed that fluorescent lamps, quartz halogen lamps and tungsten filament incandescent lamps may emit UVB waves with less than 280nm, and that larger doses of UVA could be emitted in more intense lighting.7

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A ring light provides illumination with little shadow because the origin of the light is very close to the optical axis of the lens. It is commonly described as the glamour or beauty light.