Optical waveguide with prism coupler for parallel light
US4152045A · kind A · utility
14Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Oct 3, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Couplers for coupling achromatic light having wavelengths of blue through red to and from an optical film waveguide along collinear paths parallel with the waveguide. Each coupler is constituted by a prism made of a material which, over the range of wavelengths of interest, has a change in refractive index which differs from the change in refractive index of the waveguide film by less than 0.5 percent of the refractive index of the prism material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.