It’s beginning to look somewhat like Christmas October 24, 2009
Posted by ledguy in Christmas lights, Products.Tags: Brookstone, Christmas Lights, consumer reviews, GE, GE Lighting, LED, led lights
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Though the pumpkins are still out and we still have to get through turkey season, I’m beginning to see Christmas decorations start to appear.
Which raises the question: should you buy LED Christmas lights this year?
My advice: yes, just look for the color temperature in the 3000 – 3500k range.
More advice from an early adopter October 15, 2009
Posted by ledguy in Products, Replacement bulbs, Review, Where to buy.Tags: consumer reviews, LED, led lights, Replacement bulbs
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A while back, Warren provided his experience with early LED replacement bulbs. He submitted the following comment on a recent post, but this is such encouraging news that I thought it deserved to be highlighted:
I have found a 60 watt replacement that is reasonably priced at $19.95. It is a 5.5 watt tube light and is so bright you can’t look at it. I got it from Super Bright. http://superbrightleds.com/edison_globe.html part #E27-W35HF-T. If that isn’t bright enough for you, there is a 100 watt equivalent that I purchased from Luminosity, http://luminosityled.com/products/index.php/led-household-lightbulbs.html for $36.79. It is 8.2 watts. These will really light up a room.
Thanks, Warren! I’ll be sure to check them out.
For those of you inclined to the numbers, let’s say you replace a bulb that is lit 4 hours per day with the above bulbs:
- The 60-watt equivalent will save 79.6 kilowatt hours, or almost $12 at electricity rate of $.15 per kwh. Here in Massachusetts, rates are closer to $.20 so I would save almost $15.
- The 100 watt equivalent will save 134 kwh, $20 at $.15 per kwh and nearly $27 for me.
Another way to put it is each of these bulbs will pay back the initial cost in under 2 years, but since they are likely to last at least 7 years (10,000 hours) they will save a lot of money over the lifetime.
Now that cfl’s have come down to the sub $10 range (and I often see them in the sub $5 range) I don’t think these prices are mass market yet. But they are close enough that early adopters will buy them, starting the feedback look that will increase volume and lower costs, prove the market, attract more competition, further lower prices, spur more demand, etc.
Perhaps the L-Prize , with its more modest goal of replacing a 60-watt bulb with a 10-watt LED, won’t be the primary kickstart to the market.
L-Prize — Near a Winner? September 25, 2009
Posted by ledguy in News, Products, Replacement bulbs, The Business.2 comments

Will this bulb win the L-Prize?
This NY Times article give Philips the pole position for this $10 million prize. Win or lose, it is great for LED lighting. (more…)
OLEDS in the New York Times September 7, 2009
Posted by ledguy in News, OLED, The Business.Tags: LED, led lights, solid state lights, Osram, Philips Lighting, Philips, GE Lighting, SSL lighting, OLED, Organic LED
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I haven’t written about Organic LEDs yet — from what I had read, they were pretty far off in the future. This New York Times article describes several innovative, exciting and exotic lights that can be created with OLEDs. If I were the product manager, I’d focus on a simple panel to replace the ubiquitous, standard 4-foot fluorescent tube fixture. (more…)
LED Bulb Sighting at Home Depot! September 6, 2009
Posted by ledguy in Uncategorized.Tags: led lights, Luxeon, Philips, Philips Lighting, solid state lights, SSL lighting
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Philips LEDs at Home Depot
Nestled among the CFLs at Home Depot were 3 Philips LED bulbs of fairly mainstream sizes. IMHO, this is bad merchandising for these products which are not ready for mainstream markets. (more…)
A Lesson in Color Rendering Index August 25, 2009
Posted by ledguy in The Basics.Tags: Color rendering index, CRI, LED, led lights, solid state lights, SSL lighting
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I explained color temperature a while ago. Now, I’m seeing more and more LED products promote their high CRI, or color rendering index. So, let me explain…
Another way for LED lights to help you read in the dark August 24, 2009
Posted by ledguy in Just for Fun, Novelty, Products.Tags: baseball cap, book light, booklight, catalog, catalogue, LED, led lights, niche lights
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I’ve come across a few interesting products that light up dark corners where you are looking (like these reading glasses and this clip-on for baseball caps). Here in the Home Trends catalog is another example.
I like the elegance of the reading glasses better, personally. But these could be very handy, too.
Streetlights — a real example August 21, 2009
Posted by ledguy in Products, Streetlights.Tags: LED, led lights, SSL lighting, Street lights
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LED streetlights seem like a good idea, but seeing is believing. This photo, comparing LED to sodium vapor lamps, makes a compelling case that LEDs are ready to go.
Cree Financials Good; Strategy is More Interesting August 20, 2009
Posted by ledguy in News, The Business.Tags: CREE, LED, led lights, solid state lights, SSL lighting
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LED lighting leader Cree announced their quarterly and fiscal annual earnings. The numbers are good and come with the usual “record-breaking” spin of earnings announcements. Behind the numbers Cree’s perceptive understanding of the lighting market and creative approaches to overcoming resistance to LEDs is even more impressive.
Cool gadget: LED Reading Glasses August 18, 2009
Posted by ledguy in Just for Fun, Novelty, Products.Tags: catalog, catalogue, consumer reviews, headlights, niche lights, Products
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Here’s something that will go on my Christmas list: reading glasses that have LED lights built in! I saw them in the Herrington Catalogue this morning, and found them on the Herrington site.
I documented the evolution of booklights in an early post on this blog, as well as lights to clip to your baseball cap.
These glasses are a great example of one of the points I made in those posts: LEDs allow innovative new design for lights that will result in dramatic new products.
Maybe if I’m really nice to my wife, I won’t have to wait until Christmas….