Find out about the newest light bulbs, including energy-efficient LED and compact fluorescent. Also, learn more about latest laws related to light bulbs and get tips for choosing the right light bulbs for your needs.
We wrote an article a few years ago about “li-fi,” an up-and-coming technology that uses light bulbs to transmit a wireless signal. This technology has come a long way since then, and today it’s one of the craziest (and coolest) innovations in the lighting industry! Scientists across the globe (primarily in the UK and China) have been developing this lighting-based data transmission, which could revolutionize the way we connect to the internet.
Conventional wi-fi is emitted using mirowaves or radio frequencies. The great conundrum of physics is that light travels both in particles and waves, a property which also makes it compatible with wavelength data transmission. Although li-fi has been in development for some years now, the most notable recent accomplishment belongs to Chinese professor Chi Nan, who managed to construct a DIY lighting-based data transmitter from basic retail components. (more…)
LEDs are at the forefront of light industry discussion because they are such a gamechanger when it comes to energy efficiency and lifespan. But how do recent developments to LED technology affect the everyday consumer? What’s the simplest way to navigate this uncharted territory when shopping for LED light bulbs? The very recent availability of an LED replacement for the common household incandescent lamp has created a world of new potential, and along with it a whole new set of standards. In this post, we will be discussing the various ways to distinguish between the different LED options.
1. Light Output
Incandescent lamps have always been measured in watts, because for a really long time people equated the electricity it took to light a bulb with the luminosity it created. So “60 watts” came to mean “the brightness of a 60-watt incandescent lamp,” even though luminosity is measured in lumens, not watts.
With the introduction of more energy efficient lighting, however, this standard doesn’t work. It takes significantly less wattage to produce the same amount of light in an LED or fluorescent lamp, so it’s important for consumers to understand the luminosity of a bulb rather than simply its wattage.
Luminosity, or lamp brightness, is measured in lumens. The chart to the right demonstrates the amount of lumens a standard incandescent light bulb produces, so if you’re used to watts you can easily figure out what lumen count you want in your new LED bulb.
An LED lamp’s packaging or product description might mention how comparable its lumens are to the light output of a 60-, 75- or 100-watt incandescent bulb, but it’s wise to know ahead of time what luminosity you want just in case the incandescent watt-equivalent is not included.
Takeaway: Lumens are how the brightness of an LED light bulb is measured. You’ll choose your bulb based on how bright you want the light to shine, not by how much energy it will be using.
Fluorescent light bulbs are all the rage. Today, the majority of households in the U.S. have begun to adapt their lighting, exchanging inefficient incandescent light bulbs for energy-saving compact fluorescent lamps (CFLs). These familiar spiral-shaped light bulbs hide under our lamp shades, within our ceiling lights, behind our wall sconces, and are quite pleasant to use. Often, you can’t even tell the difference between a classic incandescent and a CFL.
As incandescent lights become a thing of the past, and energy efficient lighting becomes more of a priority, the fluorescent lights have gained popularity.
Fluorescent lights use much less energy to produce the same light output as any incandescent lamp, and they last many times longer. Plus, improvements in fluorescent lighting technology have turned these lamps into a pleasant source to have around your home or work space. The cost upfront isn’t terribly more than an incandescent, either.
Presently, cost and technology make fluorescent lights and LEDs (light emitting diodes) rivals in the energy efficient lighting market. But it won’t stay that way for long. Lighting experts say that while fluorescent lighting technology has reached its peak, LEDs are still evolving and improving. Even now, manufacturers are coming out with new LED lights that surpass fluorescent technology in many different ways.
Let’s examine how fluorescent light bulbs compare with today’s LED light bulbs:
Efficiency: While both light sources are considered efficient, LED lights have pulled ahead. A CFL produces 30-50 lumens or light per watt, while an LED on the market today can produce 60-100+ lumens per watt.
Rated Life: LEDs and fluorescent lights also both have long rated lives, but again, LEDs win. A CFL can last between 6,000 and 15,000 hours. An LED can last between 25,000 and 60,000 hours.
Mercury: Fluorescent lights contain mercury, and LEDs don’t. While operating fluorescent lights on a daily basis won’t put you in danger, a broken light bulb will expose you to a small amount of this toxic substance.
Infrared and UV: LED light bulbs don’t emit infrared or UV radiation in the same direction they emit light, but fluorescent lights do. Thus, LEDs will not damage sensitive material, and they won’t attract bugs. (more…)
With LEDs, you have so many possibilities. Earlier this week, we published a post about replacing old incandescent light bulbs with LEDs. But, LED light bulbs are much more versatile than that. Their innovative construction makes them great replacements for almost any kind of light bulb.
In this post, we’ll cover how LEDs can replace halogen light bulbs.
A halogen light bulb is an incandescent light bulb filled with a halogen gas. This gas within the light bulb’s envelope helps the light last longer and use less energy to produce light. There are certainly good reasons to use halogen light bulbs, but these lights also have their shortcomings.
Before we get into how to replace halogen light bulbs with LEDs, we need to understand the pros and cons of using halogen lights:
Color Temperature: Halogen lamps emit crisp, flattering light, only slightly cooler than a regular incandescent’s color temperature. The added blue and green tones make a halogen light bulb appear whiter and brighter than the average incandescent.
Rated Life: These lights last longer than incandescent light bulbs. A halogen light’s rated life can range from 8,000-20,000 hours, while an incandescent usually lasts around 1,000-2,000 hours.
Efficiency: They’re more efficient than regular incandescent light bulbs, generating about 10-35 lumens per watt, compared to about 8-24 lumens per watt.
Color Rendering: Halogen lights have a CRI of 100, which means they render colors perfectly. This makes them great for display lighting, accent lighting, and more.
Dimming: These lamps still generate light with a filament, so you can use them with standard dimmer switches.
There’s nothing quite like the glow of an incandescent light bulb. It’s warm. It’s flattering. It’s familiar.
When you buy an incandescent light bulb, you know what to look for. You know how bright the light will be by looking at its wattage. You know what shape and size to get. You know any incandescent light will work with your dimmer switch.
Incandescent lights are easy. But if you’re still using them in every light socket, things are about to get real. As part of the Energy Independence and Security Act of 2007 (EISA), incandescent light bulbs are slowly being taken off the market. In an effort to conserve energy, consumers are encouraged to use more efficient, longer-lasting light bulbs like CFLs and LEDs.
Long story short: You might have to give up your beloved incandescent lights.
While this change might seem daunting at first, can be a great opportunity to save money on energy bills and light bulb replacements.
But what about that incandescent glow? Or those familiar features? Are they gone forever?
Thankfully, no. After years of research and testing, manufacturers have finally found a way to make LED light bulbs that mimic incandescent light bulbs to near perfection. If you’re looking to replace your filament light bulb with an LED, here’s what you need to look for:
1. For that warm, inviting glow, you need an LED with a warm color temperature. An incandescent’s color temperature is normally around 2,800 degrees K. (more…)
We’re diving deep to teach you how different light sources produce light. This information can help you when you’re choosing lights for a new lighting project or maintaining the lights you already have. If you’ve ever tried researching this information, you know it can get overwhelming and complicated. So, I’m going to simplify it for you. In this post we’re covering fluorescent light bulbs…
Though the various kinds of fluorescent light bulbs look very different, the way they function is fundamentally the same.
Fluorescent light bulbs contain the following:
Electrodes, wired to an electrical circuit
A glass envelope with a white phosphor coating on the inside
Pretty simple, right? Now let’s look at how these elements work together to make light:
1. When you turn on the lamp, electrical current flows through the electrodes. Electrons pass back and forth in the tube.
2. The electrons excite the mercury vapor in the tube, bumping the atoms’ electrons to higher levels. This causes the mercury to emit UV photons, or UV light, invisible to the human eye.
3. The phosphor coating converts UV light into visible light. This happens when a UV photon collides with a phosphor atom, bumping one of the phosphor electrons to a higher energy level, and heating up the atom. When the electron falls back to its normal level, it releases energy as a visible photon – the light you see.