# US 11,898,717 B2 · Light assembly that emits a narrow, unattenuated light beam and attenuated light over broad angles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,717 B2 - Document ID: US11898717B2 - Status: Granted - Kind: B2 - Application number: 17/647,027 - Filed: 2022-01-05 - Published: 2023-07-06 - Granted: 2024-02-13 - Earliest claimed: 2022-01-05 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Garrett Darmer - Web page: https://patentgrep.com/patent/US11898717B2 ## CPC - F21S 43/50: characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers - B64D 47/02: Arrangements or adaptations of signal or lighting devices - B64D 47/06: for indicating aircraft presence - F21S 43/14: Light emitting diodes [LED] - F21S 43/26: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255} - B64D 2203/00: Aircraft or airfield lights using LEDs - F21W 2103/10: Position lights - F21W 2107/30: for aircraft - F21Y 2113/30: {of visible and non-visible spectrum} - F21Y 2115/10: Light-emitting diodes [LED] - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract A light assembly includes a housing, a light emitting diode (LED), and a hemispherical dome. The housing has a lens mounted thereon. The light LED is mounted within the housing and operable to emit light within a predetermined range of wavelengths and at an emission intensity toward the lens. The hemispherical dome mounted is within the housing between the LED and the lens. The hemispherical dome comprises a material that attenuates the emission intensity by a predetermined magnitude, and has an aperture formed therein and through which a portion of the light emitted from the LED may pass unattenuated. ## Claims ### Claim 1 A light assembly, comprising: a housing having a lens mounted thereon; a light emitting diode (LED) mounted within the housing, the LED operable to emit light within a predetermined range of wavelengths and at an emission intensity toward the lens; and a hemispherical dome mounted within the housing between the LED and the lens, the hemispherical dome comprising a material that attenuates the emission intensity by a predetermined magnitude, the hemispherical dome having an aperture formed therein and through which a portion of the light emitted from the LED may pass unattenuated. ### Claim 2 (depends on 1) The light assembly of claim 1, wherein: the hemispherical dome has an apex and an axis of symmetry that extends through the apex; and the aperture is disposed at a predetermined angle relative to the axis of symmetry. ### Claim 3 (depends on 2) The light assembly of claim 2, wherein the aperture has a predetermined diameter. ### Claim 4 (depends on 1) The light assembly of claim 1, wherein the hemispherical dome comprises a thermoplastic resin embedded with a thermoplastic dye. ### Claim 5 (depends on 1) The light assembly of claim 1, wherein the predetermined range of wavelengths is an infrared wavelength range. ### Claim 6 (depends on 1) The light assembly of claim 1, wherein: the LED is an infrared LED (IRLED) that emits IR light; and the light assembly further comprises a plurality of non-IR LEDs mounted within the housing and spaced apart from the IRLED, each of non-IR LEDs operable to emit visible light. ### Claim 7 (depends on 6) The light assembly of claim 6, further comprising: a transparent cover coupled to the housing and disposed such that the visible light emitted from the non-IR LEDs passes therethrough. ### Claim 8 (depends on 7) The light assembly of claim 7, further comprising: an opaque cover coupled to the housing and abutting a portion of the transparent cover, the opaque cover having a lens opening formed therein in which the lens is disposed. ### Claim 9 (depends on 1) The light assembly of claim 1, wherein: the housing includes an attachment portion and a mount portion; the attachment portion is adapted to attach the housing to a vehicle; the mount portion extends from, and has a mount surface that is disposed at a predetermined angle relative to, the attachment portion; and the LED is coupled to the mount portion. ### Claim 10 (depends on 9) The light assembly of claim 9, further comprising: a printed circuit board disposed on the mount surface and having the LED connected thereto. ### Claim 11 An aircraft position light assembly, comprising: a housing having a lens mounted thereon; an infrared light emitting diode (IRLED) mounted within the housing, the IRLED operable to emit IR light at an emission intensity toward the lens; a plurality of non-IR LEDs mounted within the housing and spaced apart from the IR LED, each of non-IR LEDs operable to emit visible light in a direction away from the lens; and a hemispherical dome mounted within the housing between the IRLED and the lens, the hemispherical dome comprising a material that attenuates the emission intensity by a predetermined magnitude, the hemispherical dome having an apex and an axis of symmetry that extends through the apex, and further having an aperture formed therein and through which a portion of the IR light emitted from the IRLED may pass unattenuated, the aperture disposed at a predetermined angle relative to the axis of symmetry. ### Claim 12 (depends on 11) The aircraft position light assembly of claim 11, wherein the aperture has a predetermined diameter. ### Claim 13 (depends on 11) The aircraft position light assembly of claim 11, wherein the hemispherical dome comprises a thermoplastic resin embedded with a thermoplastic dye. ### Claim 14 (depends on 11) The aircraft position light assembly of claim 11, further comprising: a transparent cover coupled to the housing and disposed such that the visible light emitted from the non-IR LEDs passes therethrough. ### Claim 15 (depends on 14) The aircraft position light assembly of claim 14, further comprising: an opaque cover coupled to the housing and abutting a portion of the transparent cover, the opaque cover having a lens opening formed therein in which the lens is disposed. ### Claim 16 (depends on 11) The aircraft position light assembly of claim 11, wherein: the housing includes an attachment portion and a mount portion; the attachment portion is adapted to attach the housing to a vehicle; the mount portion extends from, and has a mount surface that is disposed at a predetermined angle relative to, the attachment portion; and the LED is coupled to the mount portion. ### Claim 17 (depends on 16) The aircraft position light assembly of claim 16, further comprising: a printed circuit board disposed on the mount surface and having the LED connected thereto. ### Claim 18 A light assembly, comprising: a housing having a lens mounted thereon; a light emitting diode (LED) mounted within the housing, the LED operable to emit light within a predetermined range of wavelengths and at an emission intensity toward the lens; and a hemispherical dome mounted within the housing between the LED and the lens, the hemispherical dome comprising a material that attenuates the emission intensity by a predetermined magnitude, the hemispherical dome having an aperture formed therein and through which a portion of the light emitted from the LED may pass unattenuated, the aperture having a predetermined diameter. ### Claim 19 (depends on 18) The light assembly of claim 18, wherein: the hemispherical dome has an apex and an axis of symmetry that extends through the apex; and the aperture is disposed at a predetermined angle relative to the axis of symmetry. ### Claim 20 (depends on 18) The light assembly of claim 18, wherein: the hemispherical dome comprises a thermoplastic resin embedded with a thermoplastic dye; and the predetermined range of wavelengths is an infrared wavelength range.