Imaging systems can be found in various optical applications and they may appear in different configurations. Such systems can be easily setup in VirtualLab Fusion and their performance can be analyzed by using e.g. the wavefront error detector. Especially, the apertures in system is known to have an influence on the imaging quality. VirtualLab can handle the aperture effects properly and take them into consideration for the PSF/MTF calculation. As an example, such effects are demonstrated with a human eye model.

Wavefront Error Detector
Wavefront error is defined as the difference between the reference wavefront phase, which is a constant phase or spherical phase, and the detected wavefront phase of one optical system. This use case shows how to handle a wavefront error detector in VirtualLab Fusion.

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Advanced PSF and MTF Calculation of Imaging System
An imaging system consisting of a collimation objective and human eye is modeled, and by changing the illumination conditions, the cases with fully and partially illuminated apertures are investigated.

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In optics, several effects like air turbulence or thermal effects in lasers may cause modulations in the refractive index which lead to so-called graded-index (GRIN) media.

This type of media can be useful in certain applications, e.g. flat lenses, reducing aberrations and fibers. The modeling of light propagation through GRIN media is therefore important for practical optical simulations and design. In VirtualLab Fusion an efficient modeling technology has been implemented which is suitable in the cases of e.g. GRIN lenses and GRIN fiber modeling.

To know more about VirtualLab Fusion technologies, please have a look here.

Construction and Modeling of a Graded-Index Lens

VirtualLab allows for the specification of a graded-index lens in a very user-friendly way. In addition, such index-modulated lenses can be analyzed by ray tracing as well as field tracing.

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Modeling of Graded-Index (GRIN) Multimode Fiber

A fast approach for light propagation through a GRIN medium, which includes the polarization crosstalk effect, is implemented and its validity and advantages are shown in comparison to a rigorous solver.

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VirtualLab Fusion offers a user-friendly interface with Zemax, with which the user can import complete optical systems from Zemax, including the full 3D position information and the definition of the glass materials.

This enables an efficient and flexible workflow for optical designers who have access to both software packages - one optical system, constructed once, and analyzed with both Zemax and VirtualLab. On another note, optical systems and components in VirtualLab can be exported into various computer-aided design (CAD) formats, such as IGES and STL, which makes it convenient for eventual further fabrication processes.

Import Optical Systems from Zemax

VirtualLab Fusion allows the user to import optical systems with full 3D position information and glasses from Zemax files. The import enables a user friendly interface between the two software packages.

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Export Systems and Components into STL & IGES Format

VirtualLab supports the export of optical components specified in the system into various CAD formats. This includes for example the export of lenses, prisms, mirror systems and other components into STL and in IGES format.

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