A fiber IFU with 8064 fibers is designed and manufactured for the Fiber Arrayed Solar Optical Telescope. 8064 fibers are divided to two 2D arrays for different polarization states and 12 pseudo fiber slits for 12 spectrometers. There are many relative techniques have been developed during this process. The hexagon microlens array fits the 100% filling factor. The quartz micropores plate guarantee the positioning accuracy among different temperatures. The 18m fiber cables with special designs transfer the signal with low focal ratio degradation. The quartz V-grooves are used to control the positions of the fibers to form those pseudo slits. Besides, a six-dimensional alignment system and a fast alignment and detection system are built to align the microlens array with micropores and measure the focal ratio, transmission efficiency and alignment accuracy of the IFU, respectively.
Aiming at the problems existing in the detection of high precision optical devices, and combining with the market demand, this paper develops a high precision optical element surface detection system, based on Blob analysis of machine vision to detect the surface quality of high-precision optical components fully automatically and constantly. The system consists of four parts: automatic photography, image processing, image mosaic and surface data statistics. While improving the detection efficiency and reducing the cost of detection, the accuracy and reliability of high precision optical elements detection are improved. The measurement accuracy reaches the μm degree. It has a good detection performance.
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