Want more info on LED bulbs and found this in a Swedish catalog. Anyone have some better info to help understand how to apply them to home use?
Lennart
Seems pretty straightforward. You have "color", so you might want warm/yellow light, or rgb for parties, emitter type/power/lumens for how much light you want (incan is ~15lum/watt, so most of these are pretty damn weak, but they will be more focused), and the angle is how focused they are.
I have no idea what Langd means.
What you want to try instead is the 3-7W bulbs from manafont or similar. They contain half decent 1W emitters (~50-100lumen apiece) and come close to a normal bulb for $10-20usd.
I've actually been curious about these LED bulbs. Never tried any since I'm kind of worried that I'll burn my house down. I use 12W CFLs. They last for a long time, and I don't have to worry about them burning down my house, so that's worth something. I can't justify trying LEDs for saving a few watts, which equates to pennies really.
Längd is Swedish for length... probably from the base of the screw to the tip of the housing/emitter. Thank you google! :P
Is it just me or is a screw-type bulb of only a handful of lumens kind of... sad? Especially from such large clusters (21-48) of leds?
Scary stuff! Haha. Although I would not be the one to try and decode all those foreign sounding words, a couple of hours on Google Translate may just do the job, sir! :D
can't understand the words on the picture
madzedong and kaven!
You are unpolite and lazy! 
Think about all the people here spending year at skool
trying to understand English and your odd way of spelling.
Lennart
@ Lennart
Here is a thread I wrote last year reporting my impressions on a number of budget LED light bulbs I had purchased:
https://budgetlightforum.com/t/-/3116
Unfortunately, Manafont no longer sells the bulbs I liked the most. I have seen similar bulbs on DX and other sites, but have not yet purchased any from the other sources.
I am currently using 4 of the GU-10 bulbs in a kitchen light fixture that originally used 4x halogen bulbs. In this case, the LED technology is preferable as the package fits the light fixture well where CFLs would be ugly, while running much cooler than the Halogen bulbs. The halogen bulbs have a short life, low output, and are expensive and generate a LOT of heat. I am very happy with the LED bulbs in this particular application.
I have 3 additional bulbs in a bedroom ceiling fan fixture, and two in a vent-a-hood over a stovetop.
I have had three of these bulbs fail, and in each case, it was only a single emitter that had died. These 1W emitters are very inexpensive, and I was able to order a 10-pack of emitters from eBay for future repairs. I suspect that the individual emitter failure may have been due to inferior heat sinking for the affected emitters. They are mounted to a metal plate with only a small amount of cheap white PC-type heat-sink compound under the star, and some do not appear to have been mounted flat on the plate. I'm securing the new emitters with Fujik before soldering in place to ensure improved heat transfer.
<edit>
Bottom-line, I find CFLs to still be preferable for general room lighting. LED bulbs tend to be more directional so are not well suited to certain tasks. For some tasks, however, the LED bulbs are an excellent option.
CFL’s have horrible spectrum though. They also take years to reach full brightness.
Directionality problem is easy to fix:
Just get a lot of them, like you do with flashlights! :P