Check this article out from TG Daily website at http://www.tgdaily.com/content/view/42653/178/ .

Any incandescent is possible to make twice as bright and 50percent more efficient then the original - good enough just to make a catching newspaper article.
Well, the lifetime would then a bit lower, but "It was first experiment, the technology will for sure be tuned by later development"...
And in meantime other similar "breaking discovery" appear, the former is somehow "forgotten" and the life goes on...

Yes, the super-efficient incandescent bulbs are called halogen

But nonetheless still an interesting article.

Dunno if that's true, but it sounds like the laser treatment turns the filament into a lattice structure. Tungsten lattice had been experimented before, and they only last a short time before the pores melted and it becomes as efficient as the common incandescent bulb. When it comes to a balance of efficiency, life and durability, today's incandescents are pretty much the known upper limit. Halogens goes up to about 35-40 lumens per watt.

Dunno if that's true, but it sounds like the laser treatment turns the filament into a lattice structure. Tungsten lattice had been experimented before, and they only last a short time before the pores melted and it becomes as efficient as the common incandescent bulb. When it comes to a balance of efficiency, life and durability, today's incandescents are pretty much the known upper limit. Halogens goes up to about 35-40 lumens per watt.

35..40 was reached only by heat recycling (IR reflective coating), bare tungsten is at ~20lm/W max, assuming design for 1000hours at least.