![]() ![]() Usually, the System Explorer is already open but if it's not, you can access it through Setup.System Explorer: Where is this value entered into OpticStudio? The system aperture, as well as other system specific settings, are controlled by the System Explorer. Since the F/# is the ratio of the paraxial effective focal length at infinite conjugates over the paraxial entrance pupil diameter, the appropriate EPD is 25 mm: ![]() As was outlined earlier, the singlet lens must have an F/# equal to four and an effective focal length of 100 mm. We can easily determine the EPD required for the singlet lens. In OpticStudio, the EPD is defined as the diameter of the pupil in lens units as seen from object space. Each of these types are defined in more detail in the the OpticStudio Help File section: “ The Setup Tab.System Group.System Explorer.Aperture.”Įntrance Pupil Diameter is perhaps the most commonly used system aperture type and is the most convenient definition for the current example. The system aperture can be defined by a number of different types, including Entrance Pupil Diameter (EPD), Image Space F/#, Object Space NA, Float By Stop Size, etc. The system aperture not only defines the size of the beam which OpticStudio will trace through the optical system, but it also determines the initial direction cosines of the rays launched from each field point in the OBJ plane. Most frequently, the system aperture is the first parameter which is defined when starting a new design. The cursor keys or the mouse may move the highlighted bar to whichever column is desired. In addition to the object and image planes, one of the surfaces must be defined as the aperture stop (STOP).ĭata can be entered into the LDE by typing in the required values in the highlighted cell. The half-size of the surface in lens unitsĮach row within the LDE represents a single surface. In sequential OpticStudio, each optical system begins at the object (OBJ) and ends at the image (IMA). The material type (glass, air, etc.) separating the current surface from the next The thickness in lens units separating the vertices of the current and following surface Surface radius of curvature (the inverse of curvature) in lens units The type of surface (Standard, Even Aslphere, Diffraction Grating, etc.)Īn optional field for typing in surface-specific comments Some of the main entries include the following: Column name To the left, you will see the System Explorer which contains the system-specific information about the active design. In Sequential Mode, the LDE is the primary spreadsheet where the majority of the lens data is entered. In addition to the LDE within the workspace, you will also see a title bar specifying the type of window that is open, a menu (Ribbon) bar that provides access to all of OpticStudio's features, and a Quick Access Toolbar at the very top of the window. Upon opening OpticStudio, a blank LDE will appear within the main OpticStudio window (the workspace). To do this, OpticStudio uses a spreadsheet format called the Lens Data Editor (LDE). In computer-aided sequential lens design, rays are traced from one surface to the next in the order in which they are listed. Given OpticStudio's user-interface and available tools, the singlet can be modeled and optimized easily! The Lens Data Editor The final design solution shall meet the following specifications and constraints: Specification In this particular exercise, we will design and optimize an F/4 singlet lens made of N-BK7 glass. In Part 3, we discuss how to optimize the singlet to achieve a better performance within the design constrains. ![]() In Part 2, we discuss some analyses that can be used to evaluate the system performance. It also explains how Solves can be used to enforce a design constrain. It starts by an introduction to OpticStudio user interface in Sequential mode, and then focuses on how to use the System Explorer and the Lens Data Editor to correctly set up the singlet. This is Part 1 of a series of three articles. ![]() Nevertheless, the design of this simple imaging system can help introduce you to the interface of OpticStudio, touch on fundamental design concepts and strategies, and demonstrate how to use some of the basic analysis features for optimizing and determining optical performance. The singlet (a single lens) is arguably the simplest imaging system modeled in OpticStudio. Using a singlet lens as an example, the articles walks you through the basic process of designing a lens, including building the system (Part 1), analyzing its performance ( Part 2), and optimizing it for the required prescription and design constraints ( Part 3). This series of three articles is intended as an introduction to new users on interfacing with OpticStudio Sequential Mode. This article is part of the Imaging System Fundamentals free tutorial. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |