Antireflective film and optical elements having the same
US5513038A · kind A · utility
16Cited by
11References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1993 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Jun 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/115
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An antireflective film, comprising a film composed of an inorganic chemical compound consisting of Mg, Si, O and F and a film composed of an inorganic chemical compound consisting of Zr, Si and O. The film shows antireflective property over a wide spectral range even with a limited number of layers. An optical element comprising a transparent body is provided with, a film formed thereon, composed of an inorganic chemical compound consisting of Zr, Si and O and a film formed as an outermost layer facing the air, composed of an inorganic chemical compound consisting of Mg, Si, O and F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.