型号: VIS-721; VIS-722; VIS-722(N/S) 光学系统: 消色差 Czerny-Turner (1200L/mm grating) 波长范围: 350-1020nm; 320-1020nm; 320-1020nm 波长准确度: ±2nm; ±2nm; ±2nm 光谱带宽: 6nm; 5nm; 4nm