# US 2021/0276667 A1 · Waterway marker device and related arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276667 A1 - Document ID: US20210276667A1 - Status: Published application - Kind: A1 - Application number: 16/492,737 - Filed: 2018-02-23 - Published: 2021-09-09 - Earliest claimed: 2017-03-10 - Assignees: Fornavi Oy - Applicants: Fornavi Oy - Inventors: Junnu HAARA - Web page: https://patentgrep.com/patent/US20210276667A1 ## CPC - B63B 22/166: {comprising a light} - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) ## Abstract A floating waterway marker device in the form of a buoy or a waterway navigation mark is provided. The device includes a body and an at least one light source, wherein in the body a number of periodically spaced recesses are circumferentially arranged to a predetermined depth. The waterway marker device further includes a number of optical fibers extending from the at least one light source to each of the recesses and configured to convey light emitted by the at least one light source such that exiting light is directed to an ambient around the periphery of the waterway marker device. ## Claims ### Claim 1 A floating waterway marker device (100) comprising a body (10) and an least one light source (13A, 13B), wherein in the body (10) a number of periodically spaced recesses (11) are circumferentially arranged to a predetermined depth, wherein the waterway marker device (100) further comprises a number of optical fibers (14) coupled to said at least one light source (13A, 13B) and extending therefrom to each of the recesses (11), wherein each optical fiber (14) is configured to convey incoming light (21) emitted by the at least one light source (13A, 13B) such, that outgoing light (22) is directed to an ambient (A) around the periphery of the floating waterway marker device (100). ### Claim 2 (depends on 1) The floating waterway marker device (100) of claim 1, wherein each recess (11) is further configured to receive a light transmissive layer (12) thereinto, and wherein each optical fiber (14) is configured to convey incoming light (21) emitted by the at least one light source (13A, 13B) to or through said light transmissive layer (12). ### Claim 3 (depends on 2) The floating waterway marker device (100) of claim 2, wherein the light transmissive layer (12) comprises an optically functional surface (12A) formed by an array of optically functional elements configured, in terms of shape, orientation and disposition thereof on the surface (12A), to redirect incoming light (21) rays to the ambient (A) at a preselected angle α (alpha) within a range of 45-120 degrees. ### Claim 4 (depends on 3) The floating waterway marker device (100) of claim 3, wherein the optically functional surface (12A) is provided on an additional optically functional layer (18) disposed over or under the light transmissive layer (12). ### Claim 5 (depends on 2) The floating waterway marker device (100) of claim 2, wherein a clearance (17) is formed between a base (11A) of the recess (11) and the light transmissive layer (12) upon receiving the layer (12) into the recess (11). ### Claim 6 (depends on 5) The floating waterway marker device (100) of claim 5, wherein the at least one optical fiber (14) is received into the clearance (17) formed between the base (11A) of the recess (11) and the light transmissive layer (12) via an at least one aperture (16). ### Claim 7 (depends on 6) The floating waterway marker device (100) of claim 6, wherein said at least one aperture is (16) is provided in the base (11A) of the recess (11). ### Claim 8 (depends on 2) The floating water waterway marker device (100) of claim 2, wherein the light transmissive layer (12) is a reflective layer. ### Claim 9 (depends on 1) The floating waterway marker device (100) of claim 1, wherein the light source (13A, 13B) is a light emitting diode or a laser diode. ### Claim 10 (depends on 1) The floating waterway marker device (100) of claim 1, wherein the at least one light source is an external light source (13A) provided at the top of the body (10). ### Claim 11 (depends on 1) The floating waterway marker device (100) of claim 1, wherein the at least one light source is an internal light source (13B) at least partly incorporated into the body (10). ### Claim 12 (depends on 1) The floating waterway marker device (100) of claim 1, provided in the form of a buoy and/or a waterway navigation mark. ### Claim 13 (depends on 1) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 1, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit. ### Claim 14 (depends on 2) The floating waterway marker device (100) of claim 2, wherein the light transmissive layer (12) comprises an optically functional surface (12A) formed by an array of optically functional elements configured, in terms of shape, orientation and disposition thereof on the surface (12A), to redirect incoming light (21) rays to the ambient (A) at a preselected angle α (alpha) of 90 degrees. ### Claim 15 (depends on 2) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 2, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit. ### Claim 16 (depends on 3) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 3, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit. ### Claim 17 (depends on 4) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 4, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit. ### Claim 18 (depends on 5) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 5, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit. ### Claim 19 (depends on 6) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 6, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit. ### Claim 20 (depends on 7) An arrangement for marking a waterway navigation route, wherein said arrangement comprises a number of the floating waterway marker devices (100) according to claim 7, wherein the floating waterway marker devices (100) within said arrangement are at least partly synchronized in terms of light emissive function thereof, said function selected from the group consisting of: wavelength, frequency, cycle, amplitude, phase, time and intensity per time unit.