发明授权
- 专利标题: Method of providing an optoelectronic element with a non-protruding lens
- 专利标题(中): 提供具有非突出透镜的光电元件的方法
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申请号: US11475725申请日: 2006-06-27
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公开(公告)号: US07332784B2公开(公告)日: 2008-02-19
- 发明人: Michael A. Mills , James P. Coffin, IV
- 申请人: Michael A. Mills , James P. Coffin, IV
- 申请人地址: US CA Irvine
- 专利权人: Masimo Corporation
- 当前专利权人: Masimo Corporation
- 当前专利权人地址: US CA Irvine
- 代理机构: Knobbe Martens Olson & Bear LLP
- 主分类号: H01L31/0203
- IPC分类号: H01L31/0203 ; H01L31/0232
摘要:
An optoelectronic component has a lens that is formed in the surface of an encapsulant surrounding a semiconductor diode element. With respect to emitters, the lens reduces internal reflection and reduces dispersion to increase overall efficiency. With respect to detectors, the lens focuses photons on the active area of the detector, increasing detector sensitivity, which allows a detector having a reduced size and reduced cost for a given application. The lens portion of the encapsulant is generally non-protruding from the surrounding portions of the encapsulant reducing contact surface pressure caused by the optoelectronic component. This non-protruding lens is particularly useful in pulse oximetry sensor applications. The lens is advantageously formed with a contoured-tip ejector pin incorporated into the encapsulant transfer mold, and the lens shape facilitates mold release.
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