How to use the raytracing.eo.PN_33_921 function in raytracing

path.append(Space(10))
    path.display()""")
if 16 in examples:
    # Demo #16: Vendor lenses
    thorlabs.AC254_050_A().display()
    eo.PN_33_921().display()
if 17 in examples:
    # Demo #17: Vendor lenses
    path = ImagingPath()
    path.label = "Demo #17: Vendor Lenses"
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=150))
    path.append(eo.PN_33_921())
    path.append(Space(d=50))
    path.append(eo.PN_88_593())
    path.append(Space(180))
    path.append(olympus.LUMPlanFL40X())
    path.append(Space(10))
    path.display(comments=path.label + """\n
    path = ImagingPath()
    path.label = "Demo #17: Vendor Lenses"
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=150))
    path.append(eo.PN_33_921())
    path.append(Space(d=50))
    path.append(eo.PN_88_593())

def __init__(self):
        # PN for Part number
        super(PN_33_921,self).__init__(fa=100.00,fb=78.32, R1=64.67,R2=-64.67, R3=-343.59, 
                                    tc1=26.00, tc2=12.7, te=24.66, n1=1.6700, n2=1.8467, diameter=75,
                                    label="EO #33-921",
                                    url="https://www.edmundoptics.com/p/75mm-dia-x-100mm-fl-vis-0-coated-achromatic-lens/3374/")