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Guide On How To Create A Lens In FRED
Guide on how to create a Lens in FRED
In: FRED User Guides
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Guide on how to create a Lens in FRED

In this guide, you’ll follow the steps on how to create a lens using FRED software:

  • Starting a New Document:
  • Begin by opening FRED and selecting "New Document".

    2. Creating the Lens:

    • Right-click on the Geometry folder and choose "Create New Lens".
    • Change the Perimeter Type to "Focal Len/Bend".
    • Apply a Focal Length of 10.
    • Set the material to NBK7 by navigating to the Glass menu, appending the material catalog, and selecting NBK7 from the Schott catalog.
    • Click "OK" to confirm the settings and view the lens in the 3D view. 

    3. Configuring the Optical Source:

    • Right-click on the Optical Sources folder.
    • Choose "Create New Source Primitive" and select "Plane Wave".
    • Increase the random ray positions to 500.
    • Change the color to red.
    • Apply a shift of -5 along the Z-direction.
    • Click "OK" to confirm.
    • Creating the Analysis Plane:
    • Right-click on the Geometry folder.
    • Select "Create Element Primitive" and choose "Plane".
    • Leave the default settings unchanged.
    • Right-click, append, and apply a shift of 10 along the Z-direction.
    • Click "OK" to confirm and view all elements in the 3D view.

    4. Attaching an Analysis Surface:

    • Open the Geometry folder and view the surface of the plane.
    • Right-click and select "Auto-Create and Attach Analysis Surface".
    • Confirm the attachment in the 3D view. 

    5. Running the Ray Trace:

    • Navigate to the top menu and select "Trace Render" to run the ray trace.
    • Observe the focusing of rays onto the analysis plane.

    6. Analyzing Ray Behavior:

    • Select the "Positions Spot Diagram" to visualize the behavior of rays at the focus point.
    • Click "OK" to confirm and analyze the ray behavior.
    • Observe the behavior of rays at that focus point.

    By following these steps, you'll be able to effectively create a lens in FRED and analyze its optical properties. Experiment with different configurations to explore various optical phenomena.  If you have more specific questions regarding this process, feel free to reach out to our support email support@cbseu.com for assistance.