# US 2012/0073308 A1 · Apparatus and method for controlling the temperature of a black body

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- Number: US 2012/0073308 A1
- Document ID: US20120073308A1
- Status: Published application
- Kind: A1
- Application number: 13/375,750
- Filed: 2010-11-05
- Published: 2012-03-29
- Earliest claimed: 2009-11-06
- Assignees: Korea Basic Science Institute
- Inventors: Geon Hee Kim; Jeong Min Lee; Sun Choel Yang; Ki Soo Chang; Hyo Sik Kim; Moon Seop Yang
- Web page: https://patentgrep.com/patent/US20120073308A1

## CPC

- G01J 5/53: Reference sources, e.g. standard lamps; Black bodies
- G05D 23/1919: {characterised by the type of controller}
- G05D 23/27: with sensing element responsive to radiation
- 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)
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

## Abstract

Provided is an apparatus for controlling temperature of a black body. The apparatus includes a black body emitting radiant energy of infrared rays; a first Peltier element adjacent to the black body, the first Peltier element having a 1a surface and a 1b surface that selectively emit or absorb heat; a copper plate adjacent to the 1b surface; a second Peltier element adjacent to the 2b surface, the second Peltier element having a 2a surface and a 2b surface that selectively emit or absorb heat; a heat transfer member comprising a bent surface adjacent to the 2a surface, and an arm extending toward both ends of the black body to be adjacent to the both ends of the black body and a control unit controlling the 2a surface to emit heat when the 1a surface emits heat, and the 2a surface to absorb heat when the 1a surface absorbs heat.

## Claims

### Claim 1

An apparatus for controlling temperature of a black body, comprising:
a black body emitting radiant energy of infrared rays;
a first Peltier element adjacent to the black body, the first Peltier element having a 1a surface and a 1b surface that selectively emit or absorb heat;
a copper plate adjacent to the 1b surface;
a second Peltier element adjacent to the 2b surface, the second Peltier element having a 2a surface and a 2b surface that selectively emit or absorb heat;
a heat transfer member comprising a bent surface adjacent to the 2a surface, and an arm extending toward both ends of the black body to be adjacent to the both ends of the black body; and
a control unit controlling the 2a surface to emit heat simultaneously when the 1a surface emits heat, and the 2a surface to absorb heat simultaneously when the 1a surface absorbs heat,
wherein the second Peltier element has a through hole at the center thereof, and the apparatus further comprises a heat-emitting member contacting the copper plate to exhaust heat generated in the copper plate.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein when the black body is cooled, the temperature of the 1a surface is lower than the temperature of the 2a surface.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein when the black body is heated, the temperature of the 1a surface is higher than the temperature of the 2a surface.

### Claim 4

(canceled)

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the heat-emitting member comprises a heat-emitting plate connected to the copper plate, which performs heat exchange in a water-cooling manner or in an air-cooling manner.

### Claim 6 (depends on 1)

A method for controlling temperature of a black body using the apparatus of claim 1 comprising:
measuring temperature of the black body emitting radiant energy of infrared rays;
determining whether the measured temperature is higher or lower than a predetermined temperature; and
emitting heat from a 1a surface adjacent to the black body and a 2a surface of a second Peltier element adjacent to a heat transfer member comprising an arm adjacent to both ends of the black body 2 when the measured temperature is lower than the predetermined temperature, and absorbing heat into the 1a surface and the 2a surface adjacent to the black body when the measured temperature is higher than the predetermined temperature.

### Claim 7 (depends on 6)

The method of claim 6, wherein when heat is emitted from the 1a surface, the temperature of the 1a surface is lower than the temperature of the 2a surface, and when heat is absorbed into the 1a surface, the temperature of the 1a surface is higher than the temperature of the 2a surface.