Electroluminescent lamp with registration index feature and method of making the same
US5583394A · kind A · utility
68Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | May 23, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electroluminescent lamp having an indexing indicium, e.g., a registration mark, located within the lit surface area of the lamp, with the registration mark preferably being transparent to the illumination generated by the lamp when the lamp is lit in use, but being readily detected when selectively activated for providing an alignment point or region on the lamp, such as by activation with ultraviolet light of specific frequency/wavelength characteristics, when the registration mark is formed by deposition on the lamp lit surface of a dot or blob of a composition containing an ultraviolet radiation-fluorescent printing ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.