Odd Asphere Lens
The Odd Asphere surface shape is defined by:
which is very similar to the Odd Asphere surface (there are 4 additional terms). The Odd Asphere Lens object consists of two of these faces, separated by a thickness. The total object shape is defined by 32 parameters:
| Parameter # | Description | Face Name | Face # |
| 1 | The Maximum Radial aperture. | NA | NA |
| 2 | The Thickness of the lens at the center. | Side | 0 |
| 3-4 | Unused. | NA | NA |
| 5 | The front face radius of curvature. | Front | 1 |
| 6 | The front face conic constant. | Front | 1 |
| 7-18 | The front face coefficients α1 – α12 . | Front | 1 |
| 19 | The back face radius of curvature. | Back | 2 |
| 20 | The back face conic constant. | Back | 2 |
| 21-32 | The back face coefficients α1 – α12 . | Back | 2 |
| 33 | The Radial Aperture to the edge of the front side of the lens. | Side | 0 |
| 34 | The Clear Semi-Diameter to the clear aperture of the rear face. | Back | 2 |
| 35 | The Radial Aperture to the edge of the rear side of the lens. | Side | 0 |
The reference coordinate is the center of the front face. Face Numbers: Front face Face 1, back face Face 2, all other faces Face 0.
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