최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0670734 (2017-08-07) |
등록번호 | US-10089516 (2018-10-02) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 478 |
A contact image sensor having an illumination source; a first SBG array device; a transmission grating; a second SBG array device; a waveguiding layer including a multiplicity of waveguide cores separated by cladding material; an upper clad layer; and a platen. The sensor further includes: an input
A contact image sensor having an illumination source; a first SBG array device; a transmission grating; a second SBG array device; a waveguiding layer including a multiplicity of waveguide cores separated by cladding material; an upper clad layer; and a platen. The sensor further includes: an input element for coupling light from the illumination source into the first SBG array; a coupling element for coupling light out of the cores into output optical paths coupled to a detector having at least one photosensitive element.
1. A waveguide device for use in an image sensor comprising: an optical substrate with first and second light reflecting surfaces; anda light absorbing coating disposed on a plurality of regions of at least one of said surfaces, each region of light absorbing coating bordering at least one non-absor
1. A waveguide device for use in an image sensor comprising: an optical substrate with first and second light reflecting surfaces; anda light absorbing coating disposed on a plurality of regions of at least one of said surfaces, each region of light absorbing coating bordering at least one non-absorbing region;wherein each said non-absorbing region of said first surface overlapping a non-absorbing region of said second surface forms a plurality of waveguiding channels within a waveguiding volume within said substrate such that each waveguiding channel is capable of propagating a light beam without crossing over into an adjacent waveguiding channel. 2. The apparatus of claim 1, wherein said non-absorbing regions are portions of said substrate surface at which total internal reflection can take place. 3. The apparatus of claim 1 further comprising a portion of the at least one non-absorbing region that is textured on the light reflecting surface to scatter light or coated on the light reflecting surface to provide partial reflection of light. 4. The apparatus of claim 1, wherein said waveguide volume provides a rectangular waveguiding core. 5. The apparatus of claim 1, further comprising a source of light optically coupled to said waveguide. 6. The apparatus of claim 5, wherein said light is collimated before being coupled into said waveguide. 7. The apparatus of claim 5, wherein said light is infrared or ultraviolet. 8. The apparatus of claim 5, wherein said light is polarized before being coupled into said waveguide. 9. The apparatus of claim 5, further comprising at least one of a polarization selection layer, a polarization rotation layer, a platen for contact image formation, a transparent substrate, a layer of air, a layer of low index material, or a grating layer disposed between said source and said waveguide. 10. The apparatus of claim 1, further comprising at least one grating for coupling light into or out of said waveguiding volume. 11. The apparatus of claim 10, wherein said grating is one of a forward mode switchable Bragg grating, a reverse mode switchable Bragg grating, a stack of thin switchable gratings or a surface relief grating. 12. The apparatus of claim 10, wherein said grating at least partially overlaps said waveguiding volume. 13. The apparatus of claim 10, wherein said grating is patterned into a multiplicity of elongate grating elements aligned orthogonal to a light propagation direction of said waveguiding volume. 14. The apparatus of claim 10, wherein said optical substrate is divided into a pair of substrates sandwiching said grating, and transparent electrodes are applied to a surface of each substrate. 15. The apparatus of claim 10, wherein said grating comprises a plurality of grating elements switchable between a diffracting state and a non-diffracting state, wherein said grating elements are switched sequentially. 16. The apparatus of claim 10, wherein said grating is a reflection grating. 17. The apparatus of claim 1, further comprising a detector optically coupled to said waveguide. 18. The apparatus of claim 1, wherein said light absorbing regions and said non-absorbing regions form a grid of strips pattern such that multiple parallel waveguiding channels are formed. 19. The apparatus of claim 1, wherein external faces of said waveguide abut air or a low refractive index material layer. 20. The apparatus of claim 1 wherein said waveguide provides a detector waveguide in a contact image sensor comprising: an illumination source providing a collimated beam of light;an illuminator waveguide configured for propagating said light in a first total internal reflection path and containing a first array of grating columns;a detector comprising at least one photosensitive element;a platen;said detector waveguide configured for propagating light in a second total internal reflection path and containing a second array of grating columns;at least one beam steering grating disposed between said platen and said waveguide;a first waveguide coupler for coupling light from said illumination source into said illuminator waveguide; and,a second waveguide coupler for coupling light out of said detector waveguide into an output optical path,wherein said grating elements of said first array are orthogonal to said first total internal reflection path and said grating elements of said second array are orthogonal to said second total internal reflection path,wherein said columns in said first and second grating arrays are switched in cyclic fashion with only one said column element in each array being in a diffracting state at any time. 21. The apparatus of claim 17, wherein the detector comprises at least one photosensitive element optically coupled to said waveguide.
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