How to use the raytracing.ImagingPath function in raytracing

from raytracing import ImagingPath, Space, DielectricInterface

'''
Demo #12 - Thick diverging lens built from individual elements
'''


path = ImagingPath()
path.label = "Demo #12: Thick diverging lens built from individual elements"
path.objectHeight = 20
path.append(Space(d=50))
path.append(DielectricInterface(R=-20, n1=1.0, n2=1.55, diameter=25, label='Front'))
path.append(Space(d=10, diameter=25, label='Lens'))
path.append(DielectricInterface(R=20, n1=1.55, n2=1.0, diameter=25, label='Back'))
path.append(Space(d=50))
path.display()

from raytracing import ImagingPath, Space, Lens, Aperture


'''
    Demo #8 - Virtual image at -2f with object at f/2
'''


path = ImagingPath()
path.label = "Demo #8: Virtual image at -2f with object at f/2"
path.append(Space(d=2.5))
path.append(Lens(f=5))
path.append(Space(d=10))
path.display()

from raytracing import ImagingPath, Space, Lens, thorlabs, eo, olympus

'''
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()

from raytracing import ImagingPath, Space, Lens, Aperture

'''Demo #5 - Simple microscope system
The aperture stop (AS) is at the entrance of the objective lens, and the tube lens, in this particular microscope, is
the field stop (FS) and limits the field of view. Because the field stop exists, we can use limitObjectToFieldOfView=True
when displaying, which will set the objectHeight to the field of view, but will still trace all the rays using our parameters.
'''

path = ImagingPath()
path.label = "Demo #5: Simple microscope system"
path.fanAngle = 0.1  # full fan angle for rays
path.fanNumber = 5  # number of rays in fan
path.rayNumber = 5  # number of points on object
path.append(Space(d=4))
path.append(Lens(f=4, diameter=0.8, label='Obj'))
path.append(Space(d=4 + 18))
path.append(Lens(f=18, diameter=5.0, label='Tube Lens'))
path.append(Space(d=18))
path.display()

from raytracing import ImagingPath, Space, Lens, Objective

'''
Demo #14 - Path with generic objective
'''


obj = Objective(f=10, NA=0.8, focusToFocusLength=60, backAperture=18, workingDistance=2, label="Objective")
print("Focal distances: ", obj.focalDistances())
print("Position of PP1 and PP2: ", obj.principalPlanePositions(z=0))
print("Focal spots positions: ", obj.focusPositions(z=0))
print("Distance between entrance and exit planes: ", obj.L)

path = ImagingPath()
path.fanAngle = 0.0
path.fanNumber = 1
path.rayNumber = 15
path.objectHeight = 10.0
path.label = "Demo #14 Path with generic objective"
path.append(Space(180))
path.append(obj)
path.append(Space(10))
path.display()

from raytracing import ImagingPath, Space, ThickLens

'''
Demo #11 - Thick diverging lens
'''


path = ImagingPath()
path.label = "Demo #11: Thick diverging lens"
path.objectHeight = 20
path.append(Space(d=50))
path.append(ThickLens(R1=-20, R2=20, n=1.55, thickness=10, diameter=25, label='Lens'))
path.append(Space(d=50))
path.display()

from raytracing import ImagingPath, Space, Lens, olympus

'''
#DEMO 15 - Path with LUMPlanFL40X
'''


path = ImagingPath()
path.fanAngle = 0.0
path.fanNumber = 1
path.rayNumber = 15
path.objectHeight = 10.0
path.label = "Demo #15 Path with LUMPlanFL40X"
path.append(Space(180))
path.append(olympus.LUMPlanFL40X())
path.display()

from raytracing import ImagingPath, Space, Lens

'''Demo #3 - A finite lens
   An object at z=0 (front edge) is used with default properties (see Demo #1). Notice the aperture stop (AS)
   identified at the lens which blocks the cone of light. There is no field stop to restrict the field of view,
   which is why we must use the default object and cannot restrict the field of view. Notice how the default
   rays are blocked.'''


path = ImagingPath()
path.label = "Demo #3: Finite lens"
path.append(Space(d=10))
path.append(Lens(f=5, diameter=2.5))
path.append(Space(d=3))
path.append(Space(d=17))
path.display()

from raytracing import ImagingPath, Space, Lens

'''Demo #1 - An object at z=0 (front edge) is used. It is shown in blue. The image (or any intermediate images) are shown in red.\n\
This will use the default objectHeight and fanAngle but they can be changed with:
path.objectHeight = 1.0
path.fanAngle = 0.5
path.fanNumber = 5
path.rayNumber = 3'''


path = ImagingPath()
path.label = "Demo #1: lens f = 5cm, infinite diameter"
path.append(Space(d=10))
path.append(Lens(f=5))
path.append(Space(d=10))
path.display()

from raytracing import ImagingPath, Space, Lens

'''Demo #2 - Two lenses, infinite diameters
An object at z=0 (front edge) is used with default properties (see Demo #1).'''


path = ImagingPath()
path.label = "Demo #2: Two lenses, infinite diameters"
path.append(Space(d=10))
path.append(Lens(f=5))
path.append(Space(d=20))
path.append(Lens(f=5))
path.append(Space(d=10))
path.display()