Method and apparatus for backlight simulation
US7898520B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Nov 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/506
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Computer-implemented methods of simulating backlights, and machine-readable media for carrying out such methods, are disclosed. The backlight may include a plurality of components, each component having at least one element. Some methods can include: tracing rays to an output plane of the backlight; collecting information from the traced rays to produce a first database containing spatial and directional information of the rays incident on the output plane; associating a probability function with the output plane; and calculating a second database containing spatial and directional information for rays exiting the output plane as a function of the probability function and the database. The output plane can if desired correspond to a stack of optical films, e.g., diffusing films, prismatic films, reflective polarizing films, turning films, and the like. Preferably, the probability function is a bi-directional scattering distribution function (BSDF) of the output plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.