Optical product and method of manufacturing the optical product
US7684120B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2006 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Sep 16, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/149
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical product that is a cross dichroic prism formed by putting together vertexes forming right angles of a first prism element, a second prism element, a third prism element, and a fourth prism element made of glass that have a shape of a right isosceles triangle right prism and joining respective optical sides adjacent to one another among optical sides orthogonal to one another via dichroic films made of multilayer films, wherein, when a section between the optical side of the first prism element and the optical side of the second prism element is set as a first junction, a section between the optical side of the second prism element and the optical side of the third prism element is set as a second junction, a section between the optical side of the third prism element and the optical side of the fourth prism element is set as a third junction, and a section between the optical side of the fourth prism element and the optical side of the first prism element is set as a fourth junction, an uppermost layer of the dichroic film provided on the optical side of any one of the first to the fourth junctions is made of a silicon oxide layer and the silicon oxide layer of the upperm…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.