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1. Basics

1.1 BASICS Lens Construction In this video tutorial, a simple singlet lens is created using the Lens Wizard and the construction of the lens is explained in the Optical Design Editor. Video: 2:18 min
1.2 BASICS Raytracing In this video tutorial, a light sequence is traced through a singlet lens by adding a source and an imaging surface. In addition the autosequence is explained. Video: 3:08 min
1.3 BASICS Enhance Computing and GUI Performance In this video tutorial it is explained how to enhance the computational performance to increase the computing speed and to accelerate the graphical user interface. Video: 4:15 min
1.4 BASICS Record Video This video shows how to record a video of the optical system directly inside Quadoa and how to set up the camera movement. Video: 3:03 min

2. Construction

2.1 CONSTRUCTION Freeform & Stack Definiton In this video tutorial we learn how to create freeforms by adding different shapes to a lens (e.g. aspheres, Gauss peak, cosine structure). With the stack definition, any number of shapes can be combined with each other, which gives maximum flexibility with regard to the shape definition of a lens surface. Video: 3:37 min
2.2 CONSTRUCTION Assembly In this video tutorial multiple lenses are assigned to a common assembly. An assembly has its own coordinate system which allows to position, move or rotate all elements in the assembly, such as lenses or surfaces, together. In addition a tolerance analysis can be performed for a single assembly, which enables a very realistic tolerance analysis of the optical system. Video: 2:22 min
2.3 CONSTRUCTION Global & Local Coordinate System In this video the difference between a local and a global coordinate system is explained. Video: 1:30 min
2.4 CONSTRUCTION Absolute & Relative Positions This video tutorial explains the absolute or relative positioning of elements within a coordinate system. Relative positions relate to the position of the last surface of the previous element, whereby an absolute positioning is referring to the absolute value in the coordinate system. Video: 2:23 min
2.5 CONSTRUCTION Lens Catalog This video tutorial explains how to insert lenses out of the lens catalog and how to filter the catalog by different filters. Video: 1:47 min
2.6 CONSTRUCTION Multiconfig Lookup Table & Parameter This video tutorial explains how to insert parameters instead of numerical values by using the Multiconfig Lookup Table. Video: 3:25 min
2.7 CONSTRUCTION Slider Interface & Parameter In this video the Slider Interface is explained. With the Slider Interface parameters can be defined by a minium and a maximum value. The Slider enables a sliding between these values. Video: 3:29 min
2.8 CONSTRUCTION 3D-View Editor This video explains how to edit lens- and surface parameters directly inside the 3D-View without having to switch to the Optical Design Editor. Video: 2:57 min
2.9 CONSTRUCTION Convert Surface Form Wizard In this tutorial I will show you how to convert a form description of an Asphere into the form description of a Qbfs Q-Type-Asphere without changing the shape of the form and without changing the optical system. Video: 3:00 min
2.10 CONSTRUCTION Adding Measurement/Simulation Data to Surface In this tutorial I will show you how to add data from measurements or from simulations as for example from mechanical FEM simulations to a surface. Video: 2:04 min
2.11 CONSTRUCTION Pivot Point By setting up Pivot Points for single elements and whole assemblies, it is possible to model and simulate the mechanical dependencies for the tolerance analysis in a very intuitive way, leading to realistic simulation and tolerancing. Video: 3:26 min
2.12 CONSTRUCTION Convert Positions & Dependencies In this video it is described how to convert positions and dependencies of elements to each other, even after finishing the complete design, without affecting and changing the optical elements. This is of great importance for accurate and realistic tolerance results. Video: 3:03 min

3. Raytracing

3.1 RAYTRACING Auto Sequence & Sequence Fields The Auto Sequence is explained in this video tutorial. It shows how the Auto Sequence is created and how rays can be traced through a system that consists of several lenses. It also explains how to adjust the source properties and how to define fields. Video: 3:09 min
3.2 RAYTRACING User Sequence The User Sequence is explained in this video tutorial. With a User Sequence the sequential paths through a system can be defined completely invdividual. This makes it very easy to simulate systems with multiple sequential paths, such as interferometers, or to perform sequential reflex analyzes. Video: 3:14 min
3.3 RAYTRACING Ghost Reflex This video tutorial explains how ghost reflexes can be generated and how the reflexes can be analyzed individually. Furthermore, it is shown how the ghost reflexes can be sorted according to the maximum illuminance or the maximum total flux in order to easily identify the most problematic reflexes. Video: 4:31 min
3.4 RAYTRACING Ghost Reflex Analysis In this video the intensity of the ghost reflexes and the distribution of the ghosts on the imaging surface will be analysed. Video: 3:24 min

4. Polarization

4.1 POLARIZATION Polarized Light Source This video describes how to set up a polarized Light Source (e.g. Circular Polarization or Jones Complex) and how to define the Polarization Settings in the Source. Video: 2:45 min
4.2 POLARIZATION Polarization Elements In this video it is shown how to add Polarization ELements as a Quarter Wave Plate or a Jones Matrix to a Lens Surface. Video: 3:09 min

5. Mechanics

5.1 MECHANICS Import Mechanics & Intersection Analysis In this video mechanical elements are imported to the optical system. Furthermore it will be analysed if there is an intersection between the optical rays and the mechanical parts. Video: 2:53 min

6. Analysis

6.1 ANALYSIS Basic Plot Settings This video describes how the Analysis Plots can be set up and how settings can be changed. Video: 1:46 min

7. Optimization

7.1 OPTIMIZATION Spot Radius Optimization In this video the spot radius of an optimization of an achromatic doublet is shown. The Merit Function is defined with different Optimization Goals/Targets and in addition it is shown how to set up Lagrange constraints. Video: 4:35 min
7.2 OPTIMIZATION Material Substitution In this video it is described, how to substitute Materials by using the Extended Optimization. Video: 2:29 min
7.3 OPTIMIZATION Math Expression In this video tutorial it is described how to use a math expression for the optimization. It is also shown how to perform a computation in the math expression with different variables or tracing targets. Video: 2:08 min
7.4 OPTIMIZATION Material- and Substitute Catalog This video tutorial shows how to create a user defined materials catalog and how to set up a substitute materials catalog. Substutite materials can be used by the optimizer to optimize materials. Video: 2:55 min
7.5 OPTIMIZATION Multiple Merit Function Optimization In this tutorial multiple merit functions and multiple sequences are used to optimize an optical system. Using multiple merit functions is of great advantage e.g. for complex systems with several assemblies and multiple ray paths. Further multiple merit functions can be used for Tolerancing to evaluate the optical performance and for setting up compensators. Video: 5:28 min
7.6 OPTIMIZATION Computer Generated Hologram (CGH) Optimization Optimization of a computer generated hologram (CGH) for the interferometric testing of aspheres. This tutorial shows how to optimize the phase function of a CGH with source type "From Surface" that emits rays perpendicular to the aspheric surface. Video: 7:01 min

8. Tolerancing

8.1 TOLERANCING Define Tolerances This video describes how to set up a Tolerance Analysis and how to define Global & Specific Tolerances for single elements. Video: 3:46 min
8.2 TOLERANCING Sensitivity Analysis & Monte Carlo Simulation In this video a Sensitivity Analysis and a Monte Carlo Simulation is performed. In addition it is described how the tolerances have an impact on the Merit Function. Video: 2:37 min
8.3 TOLERANCING Quadoa New Video Compensators for alignment process This tutorial demonstrates how to perform a tolerance analysis for systems, where one or more manual alignment steps are included during the assembly process of the optical system. The tutorial shows how to set up the compensators that simulate the alignment strategy step by step based on a simple example. Video: 8:43 min

9. Scripting

9.1 SCRIPTING Python Interface This video explains the basics of the Python Scripting Interface and shows how to use the Python Wizard to create a PSF Plot and a Spot Diagram. Video: 2:57 min

Design Examples

Video Design of a parametric off-axis mirror telescope in only 13:37 min with Quadoa Optical CAD This tutorial demonstrates how to design a parametric off-axis mirror telescope in Quadoa step by step in only 13:37 minutes. The tutorial includes the definition of the surface shapes and apertures, setting up lookup parameters, defining the sequential raytrace, optimizing the design and analyzing the image quality. In a final step the mirror-surfaces are converted to volumetric elements for CAD export. Video: 13:37 min
Video Head-Up-Display design: The advantage of the multi-sequential raytracing capability The 20 min video tutorial covers all steps from importing the windshield from mechanical CAD, setting up the driver's eyebox and virtual image, importing the mechanical building area, and actually optimizing the free-form surface. The image quality and the impact of sunlight will further be analyzed directly in the same model by taking advantage of Quadoa's unique multi-sequential raytracing capabilities. Video: 20:58 min
Video Quadoa New Video Cooke Triplet Lens Design with Quadoa Optical CAD This tutorial demonstrates how to design and optimize a lens in Quadoa using a classic Cooke triplet as an example. The design process starts with an empty file from scratch and goes through the design process step by step, from the set up of the start system through the optimization up to the fine tuning of the final lens design.

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Video: 8:55 min

Other Videos

Video What is Quadoa® Optical CAD? See how Quadoa® Optical CAD can enhance your optical design process and how Quadoa®'s design features can facilitate your workflow. Video: 3:51 min
Video Simulation of the alignment of the primary mirror segments of the JWST In Quadoa, the model is built using the compound surface that can be used to design "faceted" optical systems like the JWST. Video: 0:16 min
Video Building of Fizeau Interferometer See the workflow of buiding up a Fizeau Interferometer in Quadoa® Optical CAD. Video: 15:03 min
Video Opto-mechanical lens group mounted on an oscillating pole For the accurate tolerancing of an optical system besides the optics itself the modeling of the mechanics plays an important role. For example, the mechanics may influence the pivot point of a rotation or affect how lenses inside an assembly tilt and translate individually and as a group. The assembly item in Quadoa can not only contain optical but also mechanical elements. This enables a straight forward modeling of an opto-mechanical system by directly copying the real-world structure. Video: 0:20 min
Video Sequential Real-Time Ghost Analysis of a camera lens The Multi-Sequential Raytracing capability of Quadoa provides a huge advantage, through its application for sequential ghost analysis. Quadoa's Ghost Wizard allows to easily generate any relevant ghost sequences. The 3D View can visualize the ghost rays directly inside the model. The ghost analysis features allow to quickly identify critical surfaces and to use the information to optimize for a better stray light performance. Compared to non-sequential raytracing, a huge gain in raytracing speed can be achieved allowing to simulate more rays in a shorter amount of time. Video: 0:20 min
Talk Using QUADOA Optical CAD for the simulation of form-measuring interferometers and other optical metrological instruments Video: 18:34 min


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