| 摘要 |
The present invention relates to a null-correcting device for evaluating figure precision of an aspherical reflector and, more specifically, to a null-correcting device for evaluating figure precision of an aspherical reflector, having a lens unit configured in one piece, which changes a light wavelength of a spherical surface emitted from an interferometer into a light wavelength of an aspherical surface, thereby, improves the accuracy of the device. |
