|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 94|
This invention relates to optical splitters, particularly to optical splitters for use in optical touch screens. The present invention provides an optical splitter for distributing light substantially equally from a multimode input waveguide to an array of output waveguides, via a slab region. The distribution of output waveguide widths is chosen to complement the intensity distribution in the slab region, which may or may not be substantially uniform. The invention also provides an optical splitter for distributing light substantially equally from an op...
We claim: 1. An optical power splitter for distributing light from an optical source to a plurality of optical waveguides, the splitter comprising a slab region and an array of output waveguides attached thereto, wherein the optical source launches a substantially annular beam directly into the slab region, and wherein the beam diffracts with an optical field that is substantially uniform in the plane of the slab region such that, when the optical field in the slab region impinges on the output waveguides, the integral of the optical field over the wave...