- #1
fog37
- 1,568
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Hello Forum,
The aperture stop (AS) of an optical system is that physical aperture in the system that limits the amount of light from the object.
Consider a 2D object formed by point objects. The AS is determined by considering the object point that is located on the optical axis. Will the AS for that on-axis point also represent the AS for all the other off-axis objet points forming the object?
If the same 2D object moves to a different position along the optical axis, the AS will change since it is determined by the on-axis object point and its location, correct?
If that is correct, it seems that the AS is not fixed aperture for the optical system but strongly depends on the position of the 3D object being imaged...
Thanks,
fog37
The aperture stop (AS) of an optical system is that physical aperture in the system that limits the amount of light from the object.
Consider a 2D object formed by point objects. The AS is determined by considering the object point that is located on the optical axis. Will the AS for that on-axis point also represent the AS for all the other off-axis objet points forming the object?
If the same 2D object moves to a different position along the optical axis, the AS will change since it is determined by the on-axis object point and its location, correct?
If that is correct, it seems that the AS is not fixed aperture for the optical system but strongly depends on the position of the 3D object being imaged...
Thanks,
fog37