This will adjust the system settings so that the lens meets the real conditions and the analysis results are more correct. We will find which coating works better later. First, use the Coat Surfaces tool to remove the coatings from all surface. We'll use several OpticStudio tools to prepare the file for stray light analysis. Preparation works for an exampleĪt first, we introduce how to prepare an example system for stray light analysis. Open the built-in sample file Samples\Sequential\Objectives\Double Gauss 28 degree field.zmx Alternatively, light from a source inside the field of view can undergo multiple secondary reflections at lens surfaces before focused on the image surface. Light from such sources can reach the image plane via scattering from the mechanical or optical components for the system. In the field of photography, a common source of stray light is a strong light source (such as the Sun) outside the field of view. In general, stray light means light that does not enter the system through a designed path, before reaching the image plane and degrading the intended image. It is often essential, prior to physical prototyping, to investigate the effects of stray light on the performance. Introduction to stray light analysis - Part 3Īuthored By Michael Cheng, Yihua Hsiao Introduction Introduction to stray light analysis - Part 2 This article is part 1 of 3 articles, which is introducing how to observe the stray light in non-sequential mode from a sequential mode system by using NSC group converter. How to find out the path of these unwanted light and set the absorption or block this light in the path is the most critical part of stray light analysis. In optical design, even if the optical performance is well designed, there may be some unwanted light on the image plane.
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