AN PEIJIAN. A new technique for extending ranges of aspheric surfaces test by computer-generated hologram[J]. Acta Optica Sinica, 1984, 4(9): 855
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This paper discussed features of the interference type computer-generated holograms with wide fringes. A new "technique by using third order wavefront of the computer-generated holograms with wide fringes for testing aspherio surfaces has been proposed. It makes one possible to decrease the holographic fringe numbers about 62%. The feasibility and potentiality of the technique have been verified by the experimental result.