class Telephoto(optic.Optic):
"""Kingslake Telephoto Lens, Modified by Hopkins
Warren Smith, Modern Lens Design, 1992, Page 171
"""
def __init__(self):
super().__init__()
self.surfaces.add(index=0, radius=np.inf, thickness=np.inf)
self.surfaces.add(index=1, radius=24.607, thickness=5.08, material="BK7")
self.surfaces.add(index=2, radius=-36.347, thickness=1.6, material="F2")
self.surfaces.add(index=3, radius=212.138, thickness=12.3)
self.surfaces.add(index=4, radius=np.inf, thickness=21.699, is_stop=True)
self.surfaces.add(index=5, radius=-14.123, thickness=1.52, material="BK7")
self.surfaces.add(index=6, radius=-38.904, thickness=4.8, material="F2")
self.surfaces.add(index=7, radius=-25.814, thickness=37.934)
self.surfaces.add(index=8)
self.set_aperture(aperture_type="imageFNO", value=5.6)
self.fields.set_type(field_type="angle")
self.fields.add(y=0)
self.fields.add(y=2.96)
self.fields.add(y=4.19)
self.wavelengths.add(value=0.4861)
self.wavelengths.add(value=0.5876, is_primary=True)
self.wavelengths.add(value=0.6563)
