Light source with matrix of microfilaments
AssigneeC.R.F. Societa Consortile per Azioni
InventorsPiero Perlo, Mario Repetto, Bartolomeo Pairetti, Cosimo Carvignese, Denis Bollea, Davide Capello
Life of this patent
Estimating the term…
Abstract
A light source composed of a planar, or substantially level, flat or curved, rigid or flexible, matrix of microfilaments integrated on a single substrate and capable of emitting light by incandescence when supplied by an electric current.
Claims40
Light source, comprising a planar, or substantially level, flat or curved, rigid or flexible matrix of microfilaments integrated on a single substrate and suitable to emit light by incandescence when supplied by an electric current, said device comprising:
- a reflecting or transparent substrate,
- a plurality of metal microfilaments capable of emitting light by incandescence,
- a grid of conducting tracks to supply the current to said microfilaments,
- a transparent covering layer to permit emission of the luminous radiation, and
- electronic control means to switch on part or all of the microfilaments of the matrix,
- said source comprising a layer for the energy conversion of infrared radiation into visible radiation,
- wherein at least one intermediate layer is interposed between the substrate and the covering layer, with a purely mechanical function or comprising optics to control the light beam emitted, and
- wherein said intermediate layer has a plurality of holes the internal surface of which performs an additional optical function to the function of the optical surfaces of the substrate.
Light source, comprising a planar, or substantially level, flat or curved, rigid or flexible matrix of microfilaments integrated on a single substrate and suitable to emit light by incandescence when supplied by an electric current, said device comprising:
- a reflecting or transparent substrate,
- a plurality of metal microfilaments capable of emitting light by incandescence,
- a grid of conducting tracks to supply the current to said microfilaments,
- a transparent covering layer to permit emission of the luminous radiation, and
- electronic control means to switch on part or all of the microfilaments of the matrix,
- said source comprising a layer for the energy conversion of infrared radiation into visible radiation,
- wherein at least one intermediate layer is interposed between the substrate and the covering layer, with a purely mechanical function or comprising optics to control the light beam emitted, and
- wherein said intermediate layer is composed of metal material, or non-metal material with metal coating.
Light source, comprising a planar, or substantially level, flat or curved, rigid or flexible matrix of microfilaments integrated on a single substrate and suitable to emit light by incandescence when supplied by an electric current, said device comprising:
- a reflecting or transparent substrate,
- a plurality of metal microfilaments capable of emitting light by incandescence,
- a grid of conducting tracks to supply the current to said microfilaments,
- a transparent covering layer to permit emission of the luminous radiation, and
- electronic control means to switch on part or all of the microfilaments of the matrix,
- said source comprising a layer for the energy conversion of infrared radiation into visible radiation,
- wherein at least one intermediate layer is interposed between the substrate and the covering layer, with a purely mechanical function or comprising optics to control the light beam emitted, and
- wherein said intermediate layer is an electric conductor and is insulated from the supply tracks by an insulating layer.
Light source, comprising a planar, or substantially level, flat or curved, rigid or flexible matrix of microfilaments integrated on a single substrate and suitable to emit light by incandescence when supplied by an electric current, said device comprising:
- a reflecting or transparent substrate,
- a plurality of metal microfilaments capable of emitting light by incandescence,
- a grid of conducting tracks to supply the current to said microfilaments,
- a transparent covering layer to permit emission of the luminous radiation, and
- electronic control means to switch on part or all of the microfilaments of the matrix,
- said source comprising a layer for the energy conversion of infrared radiation into visible radiation, and
- wherein each microfilament is laid continuously along all the metal tracks and have active portions with higher resistance, arranged at a distance from the respective reflecting surface of the substrate, between the respective rheophores.
Light source, comprising a planar, or substantially level, flat or curved, rigid or flexible matrix of microfilaments integrated on a single substrate and suitable to emit light by incandescence when supplied by an electric current, said device comprising:
- a reflecting or transparent substrate,
- a plurality of metal microfilaments capable of emitting light by incandescence,
- a grid of conducting tracks to supply the current to said microfilaments,
- a transparent covering layer to permit emission of the luminous radiation, and
- electronic control means to switch on part or all of the microfilaments of the matrix,
- said source comprising a layer for the energy conversion of infrared radiation into visible radiation, and
- wherein the substrate has a reflecting cavity of the CPC type for each microfilament.
Dependencies are inferred from the claim text.