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Hello,

I wanted to confirm a suspicion with how the Aimpoint optics work, but to do that I need to do some ray diagrams. I only ever did them with simple convex, concave, and spherical systems while at college.

From what I already know of how reflex sights work, the LED is placed at the focal point and is reflected off a spherical lens, typically a concentric spherical lens. The concentric nature of it permits light to be minimally distorted from the target. The goal is to get all the rays to reflect parallel with the gun bore axis.

My limited understanding is that while it is at the focal point this is true; but gun sights are adjustable. Aimpoint claims their two lens system is parallax free (below is their diagram), so I am assuming the second lens (correct lens) has to do with making the rays be parallel no matter where the LED moves (to an extent). However I want to prove this with ray tracing it at maximum and minimum adjustment values.

If anybody could help guide me with how you would do a ray tracing diagram for this type of system, it would be really appreciated!

I wanted to confirm a suspicion with how the Aimpoint optics work, but to do that I need to do some ray diagrams. I only ever did them with simple convex, concave, and spherical systems while at college.

From what I already know of how reflex sights work, the LED is placed at the focal point and is reflected off a spherical lens, typically a concentric spherical lens. The concentric nature of it permits light to be minimally distorted from the target. The goal is to get all the rays to reflect parallel with the gun bore axis.

My limited understanding is that while it is at the focal point this is true; but gun sights are adjustable. Aimpoint claims their two lens system is parallax free (below is their diagram), so I am assuming the second lens (correct lens) has to do with making the rays be parallel no matter where the LED moves (to an extent). However I want to prove this with ray tracing it at maximum and minimum adjustment values.

If anybody could help guide me with how you would do a ray tracing diagram for this type of system, it would be really appreciated!

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