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    • 78. 发明授权
    • Lighting device for image capturing in electronic component mounting apparatus
    • 电子元件安装装置中的摄像用照明装置
    • US08845114B2
    • 2014-09-30
    • US12523334
    • 2008-02-19
    • Yasuichi OkadaTadashi EndouHirokazu Tanaka
    • Yasuichi OkadaTadashi EndouHirokazu Tanaka
    • G03B15/02H05K13/04G01N21/88
    • G01N21/8806G01N2201/062H05K13/0413H05K13/0812
    • To provide a lighting device for image capturing in an electronic component mounting apparatus that has small dimensions in the height direction and a small size in a plan view and thus can meet demands in a reduction in size.In an electronic component mounting apparatus, a surface lighting unit 30 that emits illumination light to a substrate, which is an object whose image is to be captured by a camera 25, includes as a main component a flat lighting substrate 31 that is provided between the camera 25 and the substrate, which is an object whose image is to be captured, so as to be substantially parallel to the surface of the substrate. Upper illumination light sources 32a, intermediate illumination light sources 32b, and lower illumination light sources 32c are arranged around an opening 31a for image capturing on one surface of the lighting substrate 31 facing the substrate in this order from the inside to the outside, such that they emit illumination light components to the surface of the substrate at different emission angles. In this way, it is possible to reduce the dimensions of the surface lighting unit 30 in the height direction and thus meet demands for a reduction in size.
    • 为了提供一种在高度方向尺寸小,平面图尺寸小的电子部件安装装置中进行摄像的照明装置,能够满足减小尺寸的要求。 在电子部件安装装置中,向照相机25拍摄图像的被摄体的基板照射光的面照明部30作为主要部件,设置在平面照明基板31之间, 照相机25和作为要拍摄其图像的对象的基板,以基本上平行于基板的表面。 上照明光源32a,中间照明光源32b和下照明光源32c从内向外依次布置在照明基板31的面对基板的一个表面上用于图像拍摄的开口31a周围,从而 它们以不同的发射角度将照明光分量发射到衬底的表面。 以这种方式,可以减小表面照明单元30在高度方向上的尺寸,从而满足减小尺寸的要求。