Patent ID: 9568372
Date: 2017-02-14
CPC Classifications: G01J

Claim:
1. An apparatus for calibrating a pyrometer, comprising: a blackbody comprising a radiant space from which radiant energy can be radiated; a body housing configured to receive the blackbody therein and comprising a light output wall having a light output port connected with the radiant space; a light output wall protecting cover comprising a transparent blocking plate disposed at a position opposite to the light output port so as to transmit a long wavelength of approximately 5 μm to approximately 20 μm and configured to be coupled with the light output wall of the body housing; and a fixing member configured to fix the light output wall protecting cover to the light output wall of the body housing, wherein the light output wall protecting cover is spaced apart from and coupled to the light output wall of the body housing so as to define a passage connecting the light output port of the body housing and an external environment such that the radiant space communicates with the external environment and a heat-exchange effect with the external environment is enhanced.