Risley Rotary Prism
AssemblyTwo counter-rotating prisms giving smoothly variable prism power 0–20 prism diopters for phoria and vergence testing. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Risley Rotary Prism
3 top-level lines as of r124556| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Prism Element | phoropter-prism-element | 2× | 2 | · | part |
| 2 | Prism Power Dial | phoropter-prism-dial | 1× | 1 | · | part |
| 3 | Helical Gear Pair | gear-pair | 1× | 1 | · | part |