Color imaging using the Christiansen effect
US3951520A · kind A · utility
10Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/195
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A Christiansen cell is formed using a dispersion of two immiscible condensed phases having different optical dispersion curves, but with matching refractive indices in the vicinity of the visible spectrum. The refractive index of one phase is imagewise changed by photopolymerization, photoreduction or other photochemical reaction, or by physical means such as heat, so that the cell will transmit unscattered and scattered light components. The scattered and unscattered components can be separated by spatial filtering, and imaged to form colored images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.