Heat-dissipation structure for an indicia reading module
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H05K-007/20
G06F-001/16
G06K-007/10
출원번호
US-0276301
(2014-05-13)
등록번호
US-9301427
(2016-03-29)
발명자
/ 주소
Feng, Chen
Xian, Tao
Bremer, Edward C.
출원인 / 주소
Hand Held Products, Inc.
대리인 / 주소
Additon, Higgins & Pendleton, P.A.
인용정보
피인용 횟수 :
30인용 특허 :
95
초록▼
Small mobile computing devices place stringent requirements on the electronic modules integrated within. High temperatures inside these mobile computing devices are unavoidable; therefore good thermal management is important to insure proper module operation. Here a heat-dissipation structure for an
Small mobile computing devices place stringent requirements on the electronic modules integrated within. High temperatures inside these mobile computing devices are unavoidable; therefore good thermal management is important to insure proper module operation. Here a heat-dissipation structure for an indicia-reading module integrated within a mobile computing device is disclosed.
대표청구항▼
1. An indicia-reading module configured to integrate within a mobile computing device's body, comprising: a sensor subassembly including an adjustable lens for imaging the indicia-reading module's field of view onto a sensor integrated circuit (IC) with a plurality of pixels for detecting an image;a
1. An indicia-reading module configured to integrate within a mobile computing device's body, comprising: a sensor subassembly including an adjustable lens for imaging the indicia-reading module's field of view onto a sensor integrated circuit (IC) with a plurality of pixels for detecting an image;an illuminator-aimer subassembly for (i) projecting light onto a target within the indicia-reading module's field of view and (ii) projecting a visible aligning pattern onto the target, the visible aligning pattern corresponding with the indicia-reading module's field of view;a processing subassembly for executing image-processing algorithms;an interface subassembly for facilitating communication between the indicia-reading module and a host device; anda thermally-conductive, unitary indicia-reading module housing that supports and contains the sensor subassembly, the illuminator-aimer subassembly, the processing subassembly, and the interface subassembly, wherein the indicia-reading module housing is thermally connected to (i) the sensor subassembly, the illuminator-aimer subassembly, the processing subassembly, and/or the interface subassembly and (ii) the mobile computing device's body. 2. The indicia-reading module according to claim 1, wherein the sensor subassembly comprises: a sensor printed circuit board (PCB) with a first surface to which a metallic circuit pad is affixed;a substrate having (i) a top surface to which a metallic top pad is affixed, (ii) a bottom surface to which a metallic bottom pad is affixed, and (iii) an array of metallic vias thermally connecting the metallic top pad and the metallic bottom pad; anda sensor integrated circuit (IC) having (i) a front surface with the plurality of pixels and (ii) a back surface opposite the front surface;wherein the substrate is (i) affixed to the sensor PCB's first surface so that the substrate's metallic bottom pad is in thermal contact with the sensor PCB's metallic circuit pad; and (ii) attached via thermally conductive epoxy to the sensor IC's back surface so that the substrate's metallic top pad is in thermal contact with the sensor IC's back surface. 3. The indicia-reading module according to claim 2, wherein: the metallic circuit pad is thermally connected to the indicia-reading module housing. 4. The indicia-reading module according to claim 1, wherein the illuminator-aimer subassembly comprises: an illuminator light source;an illuminator aperture for limiting the spatial extent of the illuminator light source, the illuminator aperture positioned in front of the illuminator light source; andan illuminator lens for projecting light from the illuminator light source onto a target within the indicia-reading module's field of view, the illuminator lens positioned in front of the illuminator aperture. 5. The indicia-reading module according to claim 1, wherein the illuminator-aimer subassembly comprises: an aimer light source;an aimer aperture for creating the visible aligning pattern corresponding the indicia-reading module's field of view, the aimer aperture positioned in front of the aimer light source; andan aimer lens for projecting light from the aimer light source onto a target within the indicia-reading module's field of view, the aimer lens positioned in front of the aimer aperture. 6. The indicia-reading module according to claim 1, wherein the processing subassembly comprises a processor integrated circuit (IC) for executing image processing algorithms. 7. A mobile computing device having indicia-reading capability, comprising: an indicia-reading module physically integrated within a body of the mobile computing device in such a way as to facilitate the indicia-reading module's imaging of indicia;wherein the indicia-reading module comprises (i) a sensor subassembly including an adjustable lens for imaging the indicia-reading module's field of view onto a sensor integrated circuit (IC) with a plurality of pixels for detecting an image, (ii) an illuminator-aimer subassembly for projecting light onto a target within the indicia-reading module's field of view and for projecting a visible aligning pattern that corresponds with the indicia-reading module's field of view onto the target, (iii) a processing subassembly with processor integrated circuit (IC) for executing image processing algorithms, (iv) an interface subassembly for facilitating communication between the indicia-reading module and a host device, and (v) an indicia-reading module housing to support and contain the subassemblies;wherein the sensor subassembly comprises (i) a sensor printed circuit board (PCB) with a first surface to which a metallic circuit pad is affixed, (ii) a substrate having a top surface to which a metallic top pad is affixed, a bottom surface to which a metallic bottom pad is affixed, and an array of metallic vias thermally connecting the metallic top pad and the metallic bottom pad, and (iii) a sensor integrated circuit (IC) having a front surface with the plurality of pixels and a back surface opposite the front surface, the substrate being affixed to the sensor PCB's first surface so that the substrate's metallic bottom pad is in thermal contact with the sensor PCB's metallic circuit pad and is attached via thermally conductive epoxy to the sensor IC's back surface so that the substrate's metallic top pad is in thermal contact with the sensor IC's back surface;wherein the illuminator-aimer subassembly comprises (i) an illuminator light source, (ii) an illuminator aperture for limiting the spatial extent of the illuminator light source, the illuminator aperture positioned in front of the illuminator light source, and (iii) an illuminator lens for projecting light from the illuminator light source onto the target within the indicia-reading module's field of view, the illuminator lens positioned in front of the illuminator aperture;wherein the illuminator-aimer subassembly further comprises (i) an aimer light source, (ii) an aimer aperture for creating the visible aligning pattern corresponding the indicia-reading module's field of view, the aimer aperture positioned in front of the aimer light source, and (iii) an aimer lens for projecting light from the aimer light source onto the target within the indicia-reading module's field of view, the aimer lens positioned in front of the aimer aperture; andwherein the indicia-reading module comprises a thermally-conductive, unitary indicia-reading module housing thermally connected to (i) the sensor subassembly, the illuminator-aimer subassembly, and/or the processing subassembly and (ii) the body of the mobile computing device. 8. The indicia-reading module according to claim 7, wherein: the metallic circuit pad is thermally connected to the indicia-reading module housing.
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