Illumination and Optics
AssemblyOptical capture path used in prism-type readers: LEDs light the pressed finger through a glass prism and a lens relays the frustrated-total-internal-reflection image onto the imager. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Illumination and Optics
5 top-level lines as of r63170| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Imaging Prism | fingerprint-reader-prism | 1× | 1 | · | part |
| 2 | Illumination LED | fingerprint-reader-led | 4× | 4 | · | part |
| 3 | Lens Assembly | camera-lens | 1× | 1 | · | part |
| 4 | Ambient Filter | fingerprint-reader-ir-filter | 1× | 1 | · | part |
| 5 | Optics Frame | fingerprint-reader-optics-frame | 1× | 1 | · | part |