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 (left) to sodium vapor lamps (right), 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….
Three Initiatives Accelerate LED Streetlight Adoption August 14, 2009
Posted by ledguy in Streetlights, The Business.Tags: CREE, DOE, LED, LED City, led lights, LEDCity, solid state lights, SSL lighting, Street lights
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Industry, foundations, and now the federal government are getting behind a movement to convert streetlights to LEDs.
The Outlook for LED Manufacturing Efficiency August 13, 2009
Posted by ledguy in News, The Business.add a comment
Trade magazine LEDs Magazine and their accompanying blog provide this detailed view of the state of LED manufacturing process (blog post here). Bottom line: manufacturing processes for LEDs are about where computer chips were in 1975.
Are LED lights efficient over their entire lifecycle? August 11, 2009
Posted by ledguy in News, The Basics, The Business.1 comment so far
A controversy bubbled up in the NY Times yesterday – does it take so much energy to manufacture LEDs that it offsets the energy saved by using them? A new study answers this question that has already been answered by the DOE…. (more…)
Streetlights — the first market entry product for LEDs? August 8, 2009
Posted by ledguy in News, Streetlights, The Business.3 comments
Since I first wrote about LED streetlights in Mill Valley, CA back in September, a long list of cities have joined as well. Will streetlights be the first product to mainstream LED lighting?
LED Light Links — first half of 2008 August 6, 2009
Posted by ledguy in News.2 comments
Here is a collection of links to interesting stories and blog posts that collectively give an interesting overview of the development of the LED lighting market…. (more…)
