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    • 3. 发明申请
    • ELECTRONIC SHELF LABEL WITH AN OPTICAL ARRANGEMENT
    • 具有光学布置的电子书签标签
    • US20150198484A1
    • 2015-07-16
    • US14413096
    • 2013-06-28
    • PRICER AB
    • Björn Nilsson
    • G01J5/08G01J5/04G01J5/10
    • G01J5/0806G01J5/04G01J5/0862G01J5/10G02B5/208G02B7/006G09F3/208H01L31/02162H01L31/02325Y10T29/4913
    • An electronic shelf label (ESL) is provided. The ESL includes a printed circuit board, PCB, a photo sensor sensitive to infra-red, IR, radiation and arranged at the PCB, an outer cover in which a window is arranged to admit light and IR radiation towards the photo sensor. The ESL further includes a filter arranged in front of the photo sensor and separate from the window, the filter being adapted to admit IR radiation and filter out light within the visible wavelength range. Further, the ESL includes index matching material transparent to IR radiation and coated on the PCB such that it covers the photo sensor and provides direct or indirect physical contact between the photo sensor and the filter. Such enables use of a photo sensor which is not pre-coated with index matching material, which reduces manufacturing costs.
    • 提供电子货架标签(ESL)。 ESL包括印刷电路板,印刷电路板,对红外线,红外线辐射敏感的光电传感器,并布置在PCB上,一个外盖,其中窗口布置成允许光和红外辐射朝向光传感器。 ESL还包括布置在光传感器前面并与窗口分离的滤光片,该滤光片适于允许IR辐射并滤出可见光波长范围内的光。 此外,ESL包括对IR辐射透明并涂覆在PCB上的折射率匹配材料,使得其覆盖光传感器并且在光传感器和滤光器之间提供直接或间接的物理接触。 这样可以使用未预先涂上索引匹配材料的光传感器,这降低了制造成本。