Multi-input optical switch
US7292741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-input optical switch can include a base plate that carries at least one photo sensor and multiple LEDs which are arranged at positions separated by approximately the same angular interval. A first mask can be formed in an approximately cylindrical shape and can include multiple through holes. A second mask can be formed as an approximately flat light blocking plate, and can include a translucent area. A translucent light guiding body can include an approximately flat plate portion, a protruded portion which extends downward from a center portion of the plate portion, a rod portion which extends upward from the center portion of the plate portion, a first total reflection surface and a second total reflection surface. A third mask can be provided with a tubular cup shape that diverges downward, and has an opening at a bottom end, a step portion at an intermediate position thereof, and at least one through hole on an upper cylindrical wall above the step portion. A rod portion of the light guiding body can be operated to freely tilt, rotate, and move up and down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.