# US 11,079,284 B2 · Plane source blackbody > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,284 B2 - Document ID: US11079284B2 - Status: Granted - Kind: B2 - Application number: 16/244,488 - Filed: 2019-01-10 - Published: 2020-01-23 - Granted: 2021-08-03 - Earliest claimed: 2018-01-11 - Assignees: Tsinghua University; Hon Hai Precision Industry Co., Ltd. - Applicants: Tsinghua University; Hon Hai Precision Industry Co., Ltd. - Inventors: Yang Wei; Guang Wang; Shou-Shan Fan - Web page: https://patentgrep.com/patent/US11079284B2 ## CPC - G01J 5/023: {Particular leg structure or construction or shape; Nanotubes} - G01J 5/53: Reference sources, e.g. standard lamps; Black bodies - G01J 5/80: Calibration (using comparison with reference sources G01J5/52) - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) ## Abstract The present invention relates to a surface source blackbody. The plane source blackbody comprises a panel, and a plurality of carbon nanotubes. The panel comprises a first surface and a second surface opposite to the first surface. A carbon nanotube array is located on the first surface of the panel. The carbon nanotube array comprises a plurality of carbon nanotubes. The plurality of carbon nanotubes are substantially perpendicular to the first surface of the panel. The carbon nanotube array has a high emissivity, so the plane source blackbody using the carbon nanotube array as a surface material has a high effective emissivity. ## Claims ### Claim 1 A plane source blackbody comprising: a panel comprising a first surface and a second surface opposite to the first surface; a carbon nanotube array on the first surface of the panel, wherein the carbon nanotube array comprises a plurality of carbon nanotubes, the plurality of carbon nanotubes are substantially perpendicular to the first surface of the panel, and the carbon nanotube array has a high emissivity, so the plane source blackbody using the carbon nanotube array as a surface material has a high effective emissivity; and the first surface of the panel is partially covered by the carbon nanotube array, the first surface of the panel which is not covered by the carbon nanotube array is covered by a black coating. ### Claim 2 (depends on 1) The plane source blackbody of claim 1, wherein each of the carbon nanotubes comprises a top end, the top end is far away from the first surface of the panel, and the top end is an open end. ### Claim 3 (depends on 1) The plane source blackbody of claim 1, wherein the black coating is a black lacquer, a black lacquer mixed with carbon nanotubes, or a carbon nanotube layer structure. ### Claim 4 (depends on 3) The plane source blackbody of claim 3, wherein a weight percentage of carbon nanotubes in the black lacquer mixed with carbon nanotubes is in a range from 1% to 50%. ### Claim 5 (depends on 3) The plane source blackbody of claim 3, wherein the carbon nanotube layer structure comprises a plurality of carbon nanotubes extending along a direction substantially parallel to a surface of the carbon nanotube layer structure. ### Claim 6 (depends on 1) The plane source blackbody of claim 1, wherein a ratio between a area of the first surface of the panel covered by the carbon nanotube array and a area of the first surface of the panel covered by the black coating ranges from 1:9 to 9:1. ### Claim 7 (depends on 1) The plane source blackbody of claim 1, wherein a plurality of micro-grooves are formed on a surface of the carbon nanotube array away from the first surface of the panel. ### Claim 8 (depends on 7) The plane source blackbody of claim 7, wherein each of the micro-grooves is an annular micro-groove, a strip micro-groove, or a dot-shaped micro-groove. ### Claim 9 (depends on 7) The plane source blackbody of claim 7, wherein cross-sectional shapes of the micro-grooves are inverted triangles, rectangles, or trapezoids. ### Claim 10 (depends on 1) The plane source blackbody of claim 1, wherein the plane source blackbody further comprises a heating element on the second surface of the panel. ### Claim 11 (depends on 10) The plane source blackbody of claim 10, wherein the heating element comprises a carbon nanotube structure, a first electrode and a second electrode, and the first electrode and the second electrode are spaced apart from each other on a surface of the carbon nanotube structure. ### Claim 12 (depends on 11) The plane source blackbody of claim 11, wherein the carbon nanotube structure comprises a plurality of carbon nanotubes joined end to end and substantially oriented along a same direction, and the plurality of carbon nanotubes of the carbon nanotube structure extend from the first electrode towards the second electrode. ### Claim 13 (depends on 1) The plane source blackbody of claim 1, wherein the first surface is a flat surface. ### Claim 14 (depends on 1) The plane source blackbody of claim 1, wherein the first surface of the panel comprises a plurality of grooves. ### Claim 15 (depends on 14) The plane source blackbody of claim 14, wherein each of the grooves is an annular groove, a strip groove, or a dot-shaped groove. ### Claim 16 (depends on 14) The plane source blackbody of claim 14, wherein cross-sectional shapes of the grooves are rectangles or trapezoids. ### Claim 17 (depends on 14) The plane source blackbody of claim 14, wherein the plurality of carbon nanotubes are on a bottom surface of each of the grooves. ### Claim 18 A plane source blackbody, comprising: a panel comprising a first surface and a second surface opposite to the first surface, wherein the first surface comprises a first portion and a second portion; a carbon nanotube array on the first portion, wherein the carbon nanotube array comprises a plurality of carbon nanotubes substantially perpendicular to the first surface; and a black coating on the second portion. ### Claim 19 (depends on 18) The plane source blackbody of claim 18, wherein the black coating is a black lacquer, a black lacquer mixed with carbon nanotubes, or a carbon nanotube layer structure. ### Claim 20 (depends on 19) The plane source blackbody of claim 19 wherein a weight percentage of carbon nanotubes in the black lacquer mixed with carbon nanotubes is in a range from 1% to 50%.