Abstract: A light diffuser having a holder device and an inflatable, at least partially light-transmissive box that can be attached to the holder device. The holder device includes an adapter ring formed by a light-transmissive disc, in particular a glass disc, for fastening to a spotlight and for connecting the inflatable box in a substantially airtight manner. The end of the inflatable box can be connected to the adapter ring which is surrounded by an airtight fastening ring that can be tensioned against a radially extending sealing surface on the adapter ring by at least three quick-closures, distributed about the circumference.

Abstract: A light diffuser having a holder device and an inflatable, at least partially light-transmissive box that can be attached to the holder device. The holder device includes an adapter ring formed by a light-transmissive disc, in particular a glass disc, for fastening to a spotlight and for connecting the inflatable box in a substantially airtight manner. The end of the inflatable box can be connected to the adapter ring which is surrounded by an airtight fastening ring that can be tensioned against a radially extending sealing surface on the adapter ring by at least three quick-closures, distributed about the circumference.

Abstract: A light diffuser, consisting of a holding mechanism and, releasably connected thereto, an inflatable sack that is at least partially translucent. The holding mechanism comprises an adapter ring that at one end serves for attachment to a spotlight and at the other end as a receptable of the sack. The adapter ring is closed off at the attachment end so as to be translucent and pressure sealed. At the holding mechanism means are provided for supply of a gaseous filling medium. Arranged at the adapter ring are a compressed-gas connection and an electronically actuatable valve for the gas supply, such that a first pressure sensor determines the increasing of pressure within the sack fixed to the ring and sends a switch-off signal to the valve when a preset maximal pressure value has been reached, in order to terminate or interrupt filling automatically.

Abstract: A lighting device includes a spotlight and an inflatable sack detachably connected thereto and made of a material that is at least partially light-transmitting. The sack has a transparent light entrance orifice to couple to a light exit orifice of the spotlight. The light entrance orifice of the inflatable sack is defined by a transparent glass disk or a transparent foil, which along a circumferential edge is connected in an airtight manner to an edge of a corresponding orifice in the sack.

Abstract: The invention relates to a light diffuser, consisting of a holding mechanism and, releasably connected thereto, an inflatable sack that is at least partially translucent, wherein the holding mechanism comprises an adapter ring that at one end serves for attachment to a spotlight and at the other end as a receptable of the sack, and furthermore the adapter ring is closed off at the attachment end so as to be translucent and pressure sealed, and at the holding mechanism means are provided for supply of a gaseous filling medium. In accordance with the invention there are arranged at the adapter ring a compressed-gas connection as well as an electronically actuatable valve for the gas supply, such that a first pressure sensor determines the increasing of pressure within the sack fixed to the ring and sends a switch-off signal to the valve when a preset maximal pressure value has been reached, in order to terminate or interrupt filling automatically.