Collimation testing with linear dual-field, study Sriram, Kuppuswamy V. ; Kothiyal, Mahendra Prasad ; Sirohi, Rajpal Singh Abstract Publication: Applied Optics Pub Date: November 1994 DOI: 10.1364/AO.33.007258 Bibcode: 1994ApOpt..33.7258S Keywords: OPTICAL TESTING