Creating the Optical Lens

The following procedure helps you create the Optical Lens that will be merged the TIR Lenses.

To create the Optical Lens

  1. From the Design tab, click Optical Lens and select a lens type/shape (Rectangular, Circular, Honeycomb, Stripes, Freestyle).
  2. In General, from the Source Type drop-down list, select TIR Lens.
  3. To define the support:
    Important: When computing the Optical Lens, the support is meshed. The bigger the support, the longer the computation of the feature. We recommend you to define a support size as close as possible to the feature size.
    1. Click to select a surface in the 3D view.
      Note: A face or a multifaces body can be selected as surface.
    2. Define the Orientation type of the support, that is on which side of the surface the elements will be created:

      • If you want to define the Optical Lens that will be merged with the TIR Lens(es), select Inner support. The inner face is considered as the support and elements will be created on the outside.

        Note: The principle of inner and outer surface is determined by the source position. The source is always facing the inner surface of the support.
      • If you want to create and combine only the TIR Lenses without the merging them with the Optical Lens, select Combined TIR Lens only. This means that you will not have to define prisms and the manufacturing of the Optical Lens.
    3. If you selected Combined TIR Lens only, adjust the Thickness of the support. This value is used to define an intermediary surface carrying the elements.
      If needed, in case you selected Inner support, you can also add a Thickness to the support.
    4. Define the Refractive index of the lenses.
  4. If you selected Combined TIR Lens only, skip the next steps of this procedure and follow directly the procedure Creating the TIR Lenses. Otherwise, you can continue following the current procedure.
  5. In Target, if you want to verify that your current design passes regulation standards, select a XML Template corresponding to the regulation standard.

    The XML template will be used by the Photometry tool simulation to generates the photometric preview displayed in the feature viewer, the HTML report and the XMP file of the selected element(s) of the feature.

    Note: You can find existing XML templates of regulation standards in the Ansys Optical Library.

    For more information on the Photometry tool, refer to Understanding Display Properties.

  6. From the Type drop-down list, select the type of metrics used for reviewing the beam pattern:

    • If the area to light is in a plane placed at a known distance from the source, select Illuminance.

      Light is focalized in one point/plane. The viewer displays illuminance values.

    • If the area to light is defined angularly, select Intensity.

      Light is directed in a given direction. The viewer displays intensity values.

    • If you want to define specific axes for the sensor, in the 3D view click to select a projection axis and to select an orientation axis or click and select a coordinate system to autofill the Axis System.
    • In case of an Illuminance target, define the integration direction of the sensor with Reverse integration direction if necessary. The Integration direction (non visible in 3D view) should be in the opposite direction of the target axis (red arrow). The target axis should face the Optical Lens.
    • In Intensity result viewing direction:
      • Select From source looking at sensor to position the observer point from where light is emitted.
      • Select From sensor looking at source to position the observer in the opposite of light direction.
  7. In the Custom contour section, if you want to trim the Optical Lens to give it a specific contour, click Contour surface and select a geometry.
    The geometry to select must fully intersect the Optical Lens. For more information on how Custom Contour works, refer to Custom Contour.
  8. In the Style tab, set the axis system of the grid and define the distribution, pattern and size of the elements to be created on the support.
    Note: If you define manually one axis only, the other axis is automatically (and randomly) calculated by Speos in the 3D view. However, the other axis in the Definition panel may not correspond to the axis in the 3D view. Please refer to the axis in the 3D view.
  9. In Manufacturing, activate the drafting of the elements if you want mechanical constraints coming from unmolding to be taken into account.
Once you defined the Optical Lens parameters, create the TIR Lens(es).