[특허]Self-aligning optical sensor package

Self-aligning optical sensor package 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-003/033 H01L-023/04 H01L-023/02 H01L-021/00
출원번호	UP-0301833 (2005-12-12)
등록번호	US-7567235 (2009-08-05)
발명자 / 주소	Spurlock, Brett A. Sanders, Steven Carlisle, Clinton B.
출원인 / 주소	Cypress Semiconductor Corporation
인용정보	피인용 횟수 : 0 인용 특허 : 62

초록 ▼

One embodiment relates to an optical navigation device. The device includes a lead frame having reference features, a laser, a detector array, and an optical component having alignment features. The laser is attached to the lead frame and positioned in reference to the reference features of the lead frame. The detector array is attached to the lead frame and positioned in reference to the reference features of the lead frame. The optical component is coupled to the lead frame so that its alignment features register to the reference features of the lead frame. In this way, the molded optical component is passively aligned to the laser and the detector array. Other embodiments are also disclosed.

대표청구항 ▼

What is claimed is: 1. An optical navigation device comprising: a lead frame having reference features; a laser attached to the lead frame and positioned in reference to the reference features; a detector array attached to the lead frame and positioned in reference to the reference features; an optical component coupled to the lead frame and having alignment features registered to the reference features of the lead frame such that the optical component is passively aligned to the laser and the detector array; and an optical aperture art between the lead frame and the optical component and having an emitter aperture configured to restrict a diameter of a beam of coherent light from the laser, the optical aperture part having reference features registered to the alignment features of the optical component and the reference features of the lead frame. 2. The optical navigation device of claim 1, wherein the optical component includes collimation optics for collimating light emitted by the laser. 3. The optical navigation device of claim 2, wherein the optical component further includes collection optics for collecting light onto the detector array. 4. The optical navigation device of claim 3, wherein the optical aperture part is between the collection optics and the detector array. 5. The optical navigation device of claim 4, wherein the optical aperture part is registered to a molding compound that covers at least a portion of the lead frame. 6. The optical navigation device of claim 5, wherein the optical component comprises said molding compound. 7. The optical navigation device of claim 1, wherein the optical aperture part includes a baffle that blocks a light path within the device between the laser and the detector array. 8. The optical navigation device of claim 1, wherein the reference features comprise holes in a substrate of the lead frame, and the alignment features comprise posts fitting into said holes. 9. The optical navigation device of claim 8, wherein the holes are formed by etching of the substrate of the lead frame. 10. An optical sensor comprising: a lead frame having reference features; an optical detector which is positioned in reference to the reference features on the lead frame; an optical component for collecting light onto the detector, wherein the optical component is passively aligned to the detector by mechanical registration of alignment features of the optical component with the reference features of the lead frame; and an optical aperture art between the lead frame and the optical component and having an emitter aperture configured to restrict a diameter of a beam of coherent light, the optical aperture part having reference features registered to the alignment features of the optical component and the reference features of the lead frame. 11. The optical sensor of claim 10, wherein the optical aperture part is aligned to the detector by registration of the reference features of the optical aperture part with the alignment features of the optical component. 12. The optical sensor of claim 10, wherein the reference features comprise holes, and the alignment features comprise posts fitting into said holes. 13. The optical sensor of claim 12, wherein the holes are formed by etching. 14. An apparatus to passively align an external lens to one or more packaged die, the apparatus comprising: a lead frame; a reference feature on the lead frame; the external lens; an alignment feature of the external lens, where the alignment feature mechanically engages and passively registers to the reference feature of the lead frame; and a die mounted to the lead frame at a position precisely referenced to the reference feature of the lead frame. 15. The apparatus of claim 14, wherein the reference features comprise holes, and the alignment features comprise posts fitting into said holes. 16. The apparatus of claim 15, wherein the holes are formed by etching. 17. A method of passively aligning an external lens to a light source and a detector array, the method comprising: providing a lead frame; etching reference features in the lead frame; attaching the light source to the lead frame at a position in reference to the reference features of the lead frame; attaching the detector array to the lead frame at a position in reference to the reference features of the lead frame; providing a molded optical component including the external lens and having alignment features; and mechanically coupling the molded optical component to the lead frame such that the alignment features of the molded optical component mechanically engage and register with the reference features of the lead frame. 18. The method of claim 17, further comprising: providing an aperture part having reference features; and coupling the aperture part to the lead frame in such a way that the alignment features of the molded optical component mechanically and register with the reference features of the aperture part.

이 특허에 인용된 특허 (62)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Self-aligning optical sensor package 원문보기

초록 ▼

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Self-aligning optical sensor package 원문보기

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연구과제 타임라인

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