ECEN 46165616 Optoelectronic Design甚至46165616的光电设计.pptxVIP

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ECEN 46165616 Optoelectronic Design甚至46165616的光电设计.pptx

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ECEN 4616/5616Optoelectronic Design Class website with past lectures, various files, and assignments: /ecen4616/Spring2014/ To view video recordings of past lectures, go to: and select “course login” from the upper right corner of the page. Lecture #34: 4/9/14 Non-Sequential Zemax Models We have been using Zemax in the Sequential mode – Every row in the Lens Data Editor defined a surface, and Zemax traces rays to these surfaces in the order in which they are in the editor. For example, here is a simple lens that we have adjusted the conic constant on to get perfect focusing of an on-axis beam through a glass plate: Non-Sequential Zemax Models If we enter a negative distance between the components, such that their actual position is reversed: Rays are still traced through the surfaces in the order in which they appear in the LDE, not the actual order they are arranged in space: Non-Sequential Zemax Models There are optical systems we would like to model, however, in which we can’t specify exactly which order all the rays will strike the surfaces – some rays may miss some surfaces entirely, while some may bounce multiple times from a single surface. An example of this would be a bent light pipe: “Torus Pipe.zmx” in the Zemax directory Samples\Non-sequential\Miscellaneous Setting up Non-Sequential Zemax Models (Tips to avoid frustration) Let’s start with just a 5mm beam of rays passing through two surfaces and hitting the Image Plane: A pretty plain system. Non-Sequential Zemax Models Let’s put a surface after the Stop and make it a Non-Sequential Component surface: Attempting a 2D layout gives us this error message: Non-Sequential Zemax Models The 3D layouts still work fine: But, the NSC surface (note the smaller diameter in the LDE) appears a short distance in front of surface #3, even though we are not allowed to put a thickness in the LDE. The NSC “surface” doesn’t actually define a surface – it defines a pair of “Ports”: The “Entrance Port” where rays from th