These hanging lamps have a story. They are designed by Henning Dyes, a 70 year old Costa Rican. According to the Sprout Home site, Dyes began designing and building lamps as a hobby and now has been in business for 20 years.
These have a bit of the vibe of the currently super popular white op-art plastic hanging lamps (like Heather's amazing thrift store find) with some woodsy organic warmth mixed in.
There's one of these hanging in the dining room of a house a block from my old apartment -- I used to walk by and stare because it looks so great.