Stereoscopic visual display system with active wavelength multiplexing
US10025109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2015 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Apr 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0187
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Visual display systems are described having means for generating stereoscopic images, a device for visual display of said stereoscopic images having a projector and a semitransparent screen; and a pair of stereoscopic spectacles. The projector according to the invention has an imager and an interference filter, the spectral transmission of which has at least one transmission band of determined width centerd around a wavelength, said wavelength being dependent on the incidence of the light on said interference filter. The projector has means allowing the angular position of the filter to be varied between two determined positions so as to transmit, according to the position, either a first spectral band or a second spectral band. The pair of stereoscopic spectacles has a first lens transmitting the first spectral band and blocking the second spectral band and a second lens providing the opposite function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.