Display system with static green primary color reduction filter
US10345606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2016 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Feb 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection system for generating an image with three primary colors, including a first and second blue laser beam, a wavelength conversion element for converting the second blue beam into a converted beam having a waveband including at least the second and third wavebands, a beam combiner for combining the first beam and the converted beam, which combination results in a white beam, a notch filter placed in the optical path of the white beam to form a modified white beam including at least the first, second and third wavebands provided to an imaging module, where a static waveband reduction filter is further provided for changing the wavelength of transmitted second waveband of the white beam, such as to adjust a projector white point shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.