Process and screen for disturbing the transmission of electromagnetic radiation particularly infra-red radiation

Claim 1

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said source is a heat generating source and said receiver and infrared detector.

Claim 2

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said source is a heat generating source and said receiver and infrared detector.

Claim 3

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen absorbs infrared radiation within a wavelength band less than 2 micrometers and re-emits it within the wavelength band comprised between 2 and 12 micrometers.

Claim 4

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen absorbs infrared radiation within a wavelength band less than 2 micrometers and re-emits it within the wavelength band comprised between 2 and 12 micrometers.

Claim 5

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said source comprises a radiation generator (9) directing radiation toward an object and said receiver comprises a receiver (14) for detecting radiation reflected from said object, said generator and receiver being disposed on the same side of said screen and on the opposite side of said screen from said object.

Claim 6

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said source comprises a radiation generator (9) directing radiation toward an object and said receiver comprises a receiver (14) for detecting radiation reflected from said object, said generator and receiver being disposed on the same side of said screen and on the opposite side of said screen from said object.

Claim 7

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said doping substances constitute at least one light cascade, wherein the absorption band of the light cascade is comprised of wavelengths from 2 to 12 micrometers and wherein the emission band is located in wavelengths higher than 12 micrometers.

Claim 8

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said doping substances constitute at least one light cascade, wherein the absorption band of the light cascade is comprised of wavelengths from 2 to 12 micrometers and wherein the emission band is located in wavelengths higher than 12 micrometers.

Claim 9

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said doping substances constitute at least one light cascade, wherein the absorption band of the light cascade is located in wavelengths smaller than 2 micrometers while the emission band is located in wavelengths comprised between 2 and 12 micrometers.

Claim 10

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said doping substances constitute at least one light cascade, wherein the absorption band of the light cascade is located in wavelengths smaller than 2 micrometers while the emission band is located in wavelengths comprised between 2 and 12 micrometers.

Claim 11

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said doping substances comprise at least two materials of the following chemical groups: hydroxyl materials with ketone groups, amino groups with double carbonated linking, amino groups associated with quaternary aminos, amino groups associated with quarternary aminos and ketone groups, amino groups associated with a ketone group, benzene-cyclane groups, linked phenyl-benzene groups, double linking groups connecting aromatic cycles, associated nitrile groups.

Claim 12

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said doping substances comprise at least two materials of the following chemical groups: hydroxyl materials with ketone groups, amino groups with double carbonated linking, amino groups associated with quaternary aminos, amino groups associated with quarternary aminos and ketone groups, amino groups associated with a ketone group, benzene-cyclane groups, linked phenyl-benzene groups, double linking groups connecting aromatic cycles, associated nitrile groups.

Claim 13

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein the doping substances are inserted by chemical grafting.

Claim 14

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein the doping substances are inserted by chemical grafting.

Claim 15

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said organic matrix comprises at least one of the following polymers or copolymers: vinyl copolymers, polyethylene, polyethylene-PMMA copolymers, polyethylene-polystyrene copolymers, PMMA-EVA-polystyrene copolymers, low-density polyethylene, polyethylene-polybutyl-butyl-vinyl-acetate, low-density ethyl-vinyl-acetate, polystyrene, PPMA-polyethylene, polyethylene-ethyl-vinyl-acetate, PMMA-ethyl-vinyl-acetate, acetate, polyethylene-acryl acid-modified acrylic, polyureanidine, polytetrafluorotene, polyfluorotene-PMMA.

Claim 16

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said organic matrix comprises at least one of the following polymers or copolymers: vinyl copolymers, polyethylene, polyethylene-PMMA copolymers, polyethylene-polystyrene copolymers, PMMA-EVA-polystyrene copolymers, low-density polyethylene, polyethylene-polybutyl-butyl-vinyl-acetate, low-density ethyl-vinyl-acetate, polystyrene, PPMA-polyethylene, polyethylene-ethyl-vinyl-acetate, PMMA-ethyl-vinyl-acetate, acetate, polyethylene-acryl acid-modified acrylic, polyureanidine, polytetrafluorotene, polyfluorotene-PMMA.

Claim 17

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, and wherein said screen comprising an absorption layer, a reflection layer and an absorption/re-emission layer.

Claim 18

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, and wherein said screen comprising an absorption layer, a reflection layer and an absorption/re-emission layer.

Claim 19

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said screen also comprises doping substances forming light cascades the absorption band of which substantially covers the solar radiation spectrum while the emission band of said light cascade solely covers the wavelength bands promoting plant photosynthesis.

Claim 20

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein said screen also comprises doping substances forming light cascades the absorption band of which substantially covers the solar radiation spectrum while the emission band of said light cascade solely covers the wavelength bands promoting plant photosynthesis.

Claim 23

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein the doping substances also comprise at least one of the following substances: tri-chloro-methacrylate, di-benzatron-oxybenzanyle and di-oxybenzatron.

Claim 24

An apparatus for disturbing the transmission of radiation of a predetermined wavelength from a source of said radiation to a receiver sensitive to a frequency band including said predetermined frequency, said apparatus comprising a screen disposed between said source and receiver for absorbing at least a portion of said radiation and re-emitting radiation in a wavelength outside of said frequency band, wherein said screen is formed of an organic matrix comprising a series of luminescent or scintillating doping substances, wherein the doping substances also comprise at least one of the following substances: tri-chloro-methacrylate, di-benzatron-oxybenzanyle and di-oxybenzatron.