LightTrans

What’s new?

Programming Custom Sources

[November 09, 2018]

Sources are yet another extensively customizable module in VirtualLab Fusion: you can adjust at will their wavelength spectrum, spatial coherence properties, transversal shape, and polarization, among others. Of all those, let us at present concentrate on the last two. You can find below a thorough tutorial on the Programmable Light source (which includes a detailed hands-on example) for you to follow, should you ...

[November 09, 2018]

Sources are yet another extensively customizable module in VirtualLab Fusion: you can adjust at will their wavelength spectrum, spatial coherence properties, transversal shape, and polarization, among others. Of all those, let us at present concentrate on the last two. You can find below a thorough tutorial on the Programmable Light source (which includes a detailed hands-on example) for you to follow, should you wish to learn to program your own sources. Additionally, we offer another example, in a more condensed format, that illustrates how to generate radially and azimuthally polarized light via programming.

How to Work with the Programmable Light Source in VirtualLab Fusion and Example (Gaussian Beam)
This tutorial will give you the instructions you need to program your own sources in VirtualLab!

read more

Programming Radially & Azimuthally Polarized Sources
See how to create a radially and an azimuthally polarized source, experimenting in the process with the programming of light sources and the potential of the Combined Light Source feature.

read more

[To check the newsletter in its original HTML-format, please click here.]

Programming Custom Functions

[November 02, 2018]

In our previous news we already pointed to VirtualLab Fusion’s extremely modular nature, combined with its potential for customizability, as one of the fundamental strengths of the software, and went on to highlight programmable surfaces as just one instance thereof. We continue here in the same vein, only this time we move on to transmission functions: a well-known concept from Fourier optics – further enhanced by ...

[November 02, 2018]

In our previous news we already pointed to VirtualLab Fusion’s extremely modular nature, combined with its potential for customizability, as one of the fundamental strengths of the software, and went on to highlight programmable surfaces as just one instance thereof. We continue here in the same vein, only this time we move on to transmission functions: a well-known concept from Fourier optics – further enhanced by VirtualLab’s fully vectorial, electromagnetic approach – transmission functions constitute a good way to include idealized components in your optical system. Learn, with the help of the tutorial and examples listed below, how to program your own custom functions in VirtualLab!

How to Work with the Programmable Function & Example (Cylindrical Lens)
Follow the instructions of this tutorial to learn how to program custom transmission functions in VirtualLab Fusion, along the example of an idealized cylindrical lens.

read more

Programming an Axicon Transmission Function
Refine your VirtualLab programming knowledge with this additional example of an axicon transmission function.

read more

[To check the newsletter in its original HTML-format, please click here.]

Programming Custom Surfaces

[October 23, 2018]

One of the fundamental strengths of the optical modeling and design software VirtualLab Fusion lies in its extremely modular approach: a gateway to provide maximum versatility to the user. This versatility is additionally turbocharged by the fact that many of the aforementioned modules which constitute VirtualLab allow for customization via data import or programming. In this newsletter we take a closer look at how ...

[October 23, 2018]

One of the fundamental strengths of the optical modeling and design software VirtualLab Fusion lies in its extremely modular approach: a gateway to provide maximum versatility to the user. This versatility is additionally turbocharged by the fact that many of the aforementioned modules which constitute VirtualLab allow for customization via data import or programming. In this newsletter we take a closer look at how to program custom surfaces. We present below a thorough tutorial on the topic which includes a simple example rolled out in-depth, and one additional programming sample for further illustration.

Programmable Interface
Learn how to program your own custom surfaces in VirtualLab Fusion along this in-depth tutorial and example.

read more

Sinusoidal Surface
Extend your knowledge of how to program surfaces in VirtualLab Fusion with this condensed example of a sinusoidal interface.

read more

[To check the newsletter in its original HTML-format, please click here.]

Non-Paraxial Polarizer and Stokes Parameters

[October 12, 2018]

 

Polarization effects often play an important role in modern optical research and engineering due to the vectorial nature of the electromagnetic field. Linear polarizers (e.g. wire grid polarizer) are probably the most commonly used optical elements for the manipulation of the polarization state. Although in most cases polarizers are designed for paraxial situations, they are also used in non-paraxial setups, e.g. ...

[October 12, 2018]

 

Polarization effects often play an important role in modern optical research and engineering due to the vectorial nature of the electromagnetic field. Linear polarizers (e.g. wire grid polarizer) are probably the most commonly used optical elements for the manipulation of the polarization state. Although in most cases polarizers are designed for paraxial situations, they are also used in non-paraxial setups, e.g. in the focal region behind a high-NA lens or for the measurement of the Stokes parameters behind a highly tilted polarizer. In VirtualLab Fusion we provide a model for polarizers in non-paraxial cases. Moreover the simulation results obtained with VirtualLab show good agreement with the reference.

Polarizer in Focal Region
To simulate a polarizer in a non-paraxial setting, an idealized model is implemented in VirtualLab, and the effect of a polarizer in the focal region is presented.

read more

Stokes Parameters behind Tilted Polarizer
Using an idealized non-paraxial polarizer model, the interaction of a polarizer with incident waves from different angles is investigated, and the results are characterized by using Stokes parameters.

read more

[To check the newsletter in its original HTML-format, please click here.]

Grating Diffraction and Polarization Conversion

[October 02, 2018]

 

Gratings are widely used for various applications, such as spectrometers, near-eye display systems, etc. In the Grating Toolbox of VirtualLab, grating structures can be easily configured through a user-friendly software interface, and they can be rigorously analyzed using the Fourier modal method (FMM). This enables not only the calculation of diffraction efficiencies but also the investigation of polarization ...

[October 02, 2018]

 

Gratings are widely used for various applications, such as spectrometers, near-eye display systems, etc. In the Grating Toolbox of VirtualLab, grating structures can be easily configured through a user-friendly software interface, and they can be rigorously analyzed using the Fourier modal method (FMM). This enables not only the calculation of diffraction efficiencies but also the investigation of polarization effects. For example, the polarization conversion for light diffraction at a sub-wavelength grating is investigated, and the results obtained from VirtualLab show good agreement with the reference.

Investigation of Polarization State of Diffraction Orders
VirtualLab’s Grating Toolbox enables the detailed analysis of grating structures. In this use case the investigation of the polarization state of the diffracted orders is discussed, facilitated by the applied Fourier modal method (FMM).

Learn more

Configuration of Grating Structures Using Interfaces
In the Grating Toolbox of VirtualLab, grating structures can be configured using a stack. In this use case the configuration of grating structures based on interfaces is explained.

Learn more

[To check the newsletter in its original HTML-format, please click here.]

 

Analysis of Imaging Systems: Wavefront Error and Effect of Apertures

[September 25, 2018]



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 ...

[September 25, 2018]



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.

Learn more

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.

Learn more

[To check the newsletter in its original HTML-format, please click here.]

Modelling of Graded-Index Media

[September 18, 2018]

 


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 ...

[September 18, 2018]

 


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.

Learn more

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.

Learn more


[To check the newsletter in its original HTML-format, please click here.]

Import of Zemax Optical Systems and Export for CAD

[September 13, 2018]

 

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 ...

[September 13, 2018]

 

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.

Learn more

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.

Learn more


[To check the newsletter in its original HTML-format, please click here.]

Panel-Type Source and Its Use in Imaging System Analysis

[September 07, 2018]

 

(Find here the full HTML-Newsletter: https://www.lighttrans.com/index.php?id=1298)

Modern display devices (LCD) are widely used in different optical systems, e.g. image projection systems.

The panel-type source in VirtualLab can be used to model the light generated by such display devices conveniently. In order to configure the source a specific number of pixels and pixel pitch can be set. With the help of the ...

[September 07, 2018]

 

(Find here the full HTML-Newsletter: https://www.lighttrans.com/index.php?id=1298)

Modern display devices (LCD) are widely used in different optical systems, e.g. image projection systems.

The panel-type source in VirtualLab can be used to model the light generated by such display devices conveniently. In order to configure the source a specific number of pixels and pixel pitch can be set. With the help of the panel-type source, the performance of the projection lenses can be analyzed, by e.g. observing the spot grid distortion in the image plane, or by checking the angular/direction behavior of the system.

Modeling of an Image Projection System Based on Panel-Type Display

An image projection system is set up using the panel-type source. The performance of the system is evaluated by observing the spot grid in the spatial and angular domain.

Learn more

How to Set Up a Panel-Type Source

With the panel-type source in VirtualLab it is possible to model a pixelated display, and further provides an adjustable number of pixels and pixel pitch.

Learn more

Scanning Source and Evaluation of F-Theta Scanning Lens

[August 31, 2018]



(Find here the full HTML-Newsletter: https://www.lighttrans.com/index.php?id=1286 )

High-quality scanning systems are of importance for many optical applications, e.g. in laser beam welding, drilling and cutting. Such systems are typically constructed with F-Theta lenses. An F-Theta lens is supposed to focus the beam onto the focal plane with a lateral displacement proportional to the scan angles.

With the help ...

[August 31, 2018]



(Find here the full HTML-Newsletter: https://www.lighttrans.com/index.php?id=1286 )

High-quality scanning systems are of importance for many optical applications, e.g. in laser beam welding, drilling and cutting. Such systems are typically constructed with F-Theta lenses. An F-Theta lens is supposed to focus the beam onto the focal plane with a lateral displacement proportional to the scan angles.

With the help of the scanning source in VirtualLab, the performance of an F-Theta lens can be analyzed by e.g. measuring the lateral shift and the size of the focal spot for different values of the scan angles.

Performance Evaluation of an F-Theta Scanning Lens

With the scanning source in VirtualLab, we analyze the performance of an F-Theta lens, by measuring the spot size and the deviation of focal spot position for different scan angles.

Learn more

How to Set Up a Scanning Source

The scanning source in VirtualLab defines a multi-mode source that radiates into several pre-defined directions, which is of help for e.g. the modeling and evaluation of a laser scanning system.

Learn more

. . 1 2 3 4 . .
Contact & Trial

LightTrans

Phone +49.3641.53129-44

info (at) lighttrans.com

 

VirtualLab Fusion

Get free trial version

Get an offer