Q-Type Asphere Surface (non-sequential objects)
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The Q-Type Asphere Surface is a radially symmetric asphere. This object supports two different variations of the Q-Type asphere: Qbfs and Qcon. See the Sequential Q-Type Asphere surface for more details about the mathematics of this surface.
The #Terms and Surface Type parameters cannot be set as variables for Optimization. If either of these parameters are set as Variable they will be changed to Fixed when the local optimization tool (Optimize!) is opened.
The following parameters are used to define the Q-type Asphere Surface:
| Parameter # | Description | Face Name | Face # |
| 1 | Radius of curvature. Negative radii are concave towards the negative Z-axis, positive radii are concave towards the positive Z-axis. Use zero for infinite radius. | All Faces | 0 |
| 2 | Conic constant. | All Faces | 0 |
| 3 | Clear semi-diameter to the maximum clear aperture. | All Faces | 0 |
| 4 | Clear semi-diameter to the minimum clear aperture. This value must be positive. If non-zero, this value creates a "hole" in the surface. | All Faces | 0 |
| 5 | Surface Type. 0 for Qbfs, 1 for Qcon. | All Faces | 0 |
| 6 | Normalization Radius. Radial coordinates are normalized by this value when calculating the asphere contributions. | All Faces | 0 |
| 7 | Number of A Coefficients. (Must be a value between 2 and 100) | All Faces | 0 |
| 8-107 | Coefficients A0 – A99 | All Faces | 0 |
The reference coordinate is the center of the surface. Face Numbers: All faces Face 0
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