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Application Example: Bessel Beam Generation

Bessel beams are a special type of light propagation that does not diffract. The light distribution of a Bessel beam maintains a tight focus with high irradiance over great distances. Bessel beams are also self-healing, which means that the light pattern will regenerate after being...

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Application Example: Color Mixing Lightpipe

LEDs, have surpassed incandescent light sources in recent years for most applications. Benefits of the LED include compact size, high power efficiency, and a long lifespan. LEDs also have undesirable qualities that optical engineers must address, such as the need for color mixing and collimation....

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Application Example: Dichroic Cold Mirror

The spectral distribution of a broadband light source is important to many optical systems, from white light illuminators to spectrometers. Color Image analysis in FRED produces visualization of color distribution by calculating chromaticity coordinates of each pixel and displaying the resulting RGB values over the...

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Application Example: Fizeau measurement of lens surface

FRED allows for simulation of physical optics phenomena such as diffraction and interference. With this capability, components such as Gaussian laser beams and interferometers can be accurately modeled and incorporated into optical systems. A full description of this application example can be found here: Fizeau measurement...

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Application Example: LED Flashlight

Light Emitting Diodes, or LEDs, have surpassed incandescent light sources in recent years for most applications. Benefits of the LED include compact size, high power efficiency, and a long lifespan [1]. LEDs also have undesirable qualities that optical engineers must address, such as the need...

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Application Example: Maltese Cross Phenomenon

FRED has the capability to simulate polarization of rays through an optical system. Light sources can be randomly, circularly, or linearly polarized. Optical components that filter or manipulate polarization, such as birefringent wave plates and polarizers, can be accurately modeled. One simple example of polarization...

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Application Example: Mobile Displays

Mobile devices such as smartphones, e-readers, and watches are becoming ubiquitous in today’s world. Precise optical engineering is required to optimize the performance of mobile features such as the camera system, sensors, and the display. A key design objective for a mobile display is uniform...

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Application Example: Newton’s Rings

FRED allows for simulation of physical optics phenomena such as diffraction and interference. With this capability, components such as Gaussian laser beams and interferometers can be accurately modeled and incorporated into optical systems. A full description of this application example can be found here: Newton’s Rings...

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Afocal Optimization

The attached FRED example demonstrates how to optimize the inter-lens spacing of a Galilean beam reducer using geometric ray collimation as the optimization metric. Open the model and expand out the Geometry folder and the Collimator subassembly node.  Observe that there are three geometry elements...

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Configuration Selection Tool

FRED Optimum supports multiple configurations within a single FRED document using the configuration editor interface found in the FRED menu, Optimize > System Configurations. The configuration editor dialog allows for the definition of multiple configuration variables as well as a mechanism for setting the current...

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