(1915-2000) was educated as an engineer. Already before his study years he was interested in the invention and construction of forms and in art in general. He painted and wrote several dramatic plays, which were performed. While he worked professionally with construction and research, he was no less interested in the practical use of things in the house, especially the lightning. He created among other things a table lamp in which the support was a tube with the wire bent in the form of a spiral, which was the leg, the bulb-holder and the shade-holder at the same time.

Wanting a pendent lamp for his own use, he produced a lampshade from sheets of thick white drawing paper. It consisted of shortened and crumpled rings. Ten cut-out rings formed an ellipsis when seen from the side. The rings together covered the lamp in such a way that direct light from the bulb was sent mainly downward. These lamps became the source of inspiration for the Kokon-lamps. The big challenge came when the plastic industry tried to manufacture the white, lustreless and translucent foil with the same characteristics as drawings paper. It is not only much more durable, it is also much more expensive.

After five years of research and attempts he succeeded in combining the spiral principal with the strong light distribution and aesthetic demands - and a patented solution. Since then the design has been improved and new sizes and form variants have arrived. Jørgen Grünwald worked with technology and production problems until the end of his life.