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Parametric Optical Design Tools

Parametric Lens Design

The Parametric Optical Design Tools within Photopia and Photopia for SOLIDWORKS® streamline the design process and help you create world class optical designs in a fraction of the time.

The Parametric Optical Design Tools use profiles to drive the generation of 3D optical geometry. A profile is defined by key parameters like the light source location, the size, and the aiming of light. Then these profiles can be used to create a 3D part, using a simple extrusion or revolution, or by creating a complex lofting and linking of multiple reflector profiles.

Profiles can be adjusted via aiming angles (parabolic sections) or aiming points (elliptic sections) with either a weight equation for smooth transitions, or via individual weights on each aiming section for precise control.

The starting profile gets you well on your way to a final design, and all of the adjustment parameters allow you to quickly iterate to an optimal design without having to redraw or import CAD models.

Based on our experience and customer feedback, the Parametric Optical Design Tools can save you hundreds of hours on a design.

Parametric Optical Design View Solidworks

Within SOLIDWORKS, the Parametric Optical Design Tools are used to create profiles in your 2D sketches. You can then use the 3D creation features of SOLIDWORKS to generate your full optical part. Create extruded or revolved parts, or more complicated lofted surfaces. You can union and subtract other features, such as flanges, holes, or other mounting features. Iterating and optimizing your design is easy since you only need to change the root optical sketch, and all of the down-tree features will be reapplied to create your final 3D optic part.

Solidworks PODT Reflector

Solidworks PODT reflector

Solidworks PODT Lens

smooth refolved lens type

Whether you're working on a downlight reflector, an extruded indoor lens, or an injection molded LED Roadway lens, the Parametric Optical Design Tools can help you create geometry based on where you want to aim the light. In Photopia you'll create the full 3D geometry of the part.

Reflector or lens

Extruded, revolved or lofted

Symmetric or asymmetric

Faceted, smooth or prismatic>

Control on inside or outside surfaces

extrude along path lens

fresnel lens

LED Roadway Lens

PODT Reflector

Real world construction parameters for lenses

Detailed view of Parameters

You can impose your manufacturing constraints on the lens or reflector design, so that things like large fillets or thick lenses don't surprise you at the last moment. Whether you're injection molding or extruding, there are appropriate parameters to adjust, like:

Minimum thickness

Peak and valley fillet radii

Pull direction

Draft angle

Index of refraction

Revolve segments


PODT Reflector Design

PODT Reflector Build Up

The Parametric Optical Design Tools allow you to create reflectors and lenses based on how you want to aim the light.

The Optical Design View provides an interactive place where you can adjust the aiming of each section.

We make use of weighting factors, so it is simple to adjust how much light is going in each direction. Have a little too much light directly below, just adjust the weighting factor. Want to kick more light at 70 degrees, just add some sections aimed in that direction.

The Parametric Optical Design Tools are a component of Photopia and Photopia for SOLIDWORKS.

For more information about pricing, purchases, or trials, please visit our pages for Photopia and Photopia for SOLIDWORKS.

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Copyright 2020 by LTI Optics, LLC, all rights reserved.

SOLIDWORKS® is a registered trademark of Dassault Systémes SOLIDWORKS Corporation.

LTI Optics provides Photopia, the industries leading optical design software and optical analysis software for designing and analyzing illumination optical systems. Photopia optical design software works alone or is an add-in to SOLIDWORKS, allowing full opto-mechanical integration.

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