| 摘要 |
PURPOSE:To obtain the absolute value of the reflection factor through a highly accurate measurement of a test piece having a high reflection rate by performing an energy damping of the luminous flux on the test piece exponentialwise while the luminous flux is reflected on the surface of the test piece at more than the specified times. CONSTITUTION:In absence of object S to be measured, the standard luminous flux passes through the route of Mirror M4-M5-M6. In the presence of the object S, the luminous flux projected to the test piece passes through the route of S-M4-S-M5-S- M6-S. As a result, the test piece luminous flux is exponentially damped in the energy. This makes the test piece luminous flux larger in the difference of the energy than the standard luminous flux, allowing highly accurate measurement. |
