Open Data, and look at the section headed Global Vertex: How will we know when we have achieved this? OpticStudio has a report which is vital whenever you are working on a tilted or decentered system. Our task in this article is to tilt and center the central window while leaving the other two windows in exactly their original locations. This is a right-handed coordinate system, in which z is on your index finger, y on your thumb and x on your middle finger, and your index finger is pointing from left to right, as shown by the coordinate axes in the bottom left-hand corner or the 3D Layout. In the above screenshot, positive z is in the left-to-right direction, positive y is going up the page and positive x is going into the page. Any ray that lands outside the aperture on a surface will be terminated. In the attached zip file, you will find a file, starting point.zmx, which shows three glass windows, the central one of which is two optical materials glued together.Įach of the windows has rectangular apertures applied (double-click on any surface and look at the Aperture tab to verify). After explaining precisely how to do this, we will show a tool that simplifies the whole process, but it is important you understand how the tool works, and so a careful reading of the whole article is advised. In this article we will show how to tilt and decenter an optical component while leaving the position of all other components unchanged. Using such a surface allows you to separate the geometric location of a surface from its optical properties. Its sole purpose is to define a new coordinate system in terms of the current one. The Coordinate Break is a dummy surface: that is, it has no refractive or reflective power and cannot bend rays. This is known as a local coordinate system because the location of a surface is specified in terms of the previous surface.Ī Coordinate Break (CB) surface allows you to specify the location of the next surface as being shifted in x and y, and tilted (rotated) in x, y and z as well as simply shifted in z. One surface is therefore placed a thickness (a distance along the local z-axis) away from the previous surface. The order specified in the Lens Data Editor (LDE) gives the exact order in which light interacts with the component surfaces of the optical system. In the sequential ray-tracing mode of OpticStudio, the order in which surfaces are entered matters enormously. Finally, the simple built-in tool for tilting and decentering optical elements is introduced. The first section describes what the Coordinate Break surface does, and the following sections include tutorials on proper use of the Coordinate Break. This article walks through the process of inserting Coordinate Break surfaces to allow the decentration and tilting of optical components. This article explains how to model these types of systems in Sequential Mode.Īuthored By Mark Nicholson, Updated by Natalie Pastuszka Downloads In many optical systems, elements are purposely tilted or decentered from the optical axis.
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