Light control with color enhancement
US5054902A · kind A · utility
59Cited by
9References
8Claims
0Family size
Inventor
Key dates
| Filing date | Nov 1, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Nov 1, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB44F1/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A semi-reflecting layer is deposited on a transparent material as part of a technique for color enhancement in such a way that the reflectivity of the semi-reflecting layer may still be varied in order to control transmission of light and portions of the electromagnetic spectrum thereto over a broad range of frequencies. For purposes of color enhancement there is used in conjunction with the semi-reflecting layer a thin dielectric layer the thickness whereof is selected to make use of optical interference between light reflected from the outer surface of the dielectric layer and light reflected from the semi-reflecting layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.