Method for realizing a filter edge, optical thin-film and optical device with such a film
US5493442A · kind A · utility
24Cited by
6References
58Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0667
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In order to reduce the number of thin-films necessary to construe an interference band-pass filter for exclusive transmission of light in the UVA range the filter edge towards smaller wavelengths in the spectral characteristic is realized by the absorption edge of the material of one of the thin-films of a thin-film interference filter which filter produces the band-pass filter edge directed towards higher wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.