We introduce a novel calibration optical path of the cryogenic radiometer, which can avoid the repeated dismounting meas......

Alignment and testing of optical axis parallelism are the key problems in alignment of a multi-optical axis system. We p......

The Giant Steerable Science Mirror (GSSM) is the tertiary mirror of the Thirty Meter Telescope (TMT). To evaluate the pe......

The integrated manufacturing technology is introduced to improve the imaging quality of an off-axis -three-mirror anasti......

A new approach is proposed to accurately determine the thickness of films, especially for ultra-thin films, through spec......

A wavefront reconstruction algorithm based on sub-aperture stitching is proposed to reconstruct a phase from its phase d......