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    • 10. 发明申请
    • Indicator lamp having a converging lens
    • 指示灯具有会聚透镜
    • US20090052190A1
    • 2009-02-26
    • US12285829
    • 2008-10-15
    • Toshio Shimada
    • Toshio Shimada
    • F21V7/04
    • F21V7/0091F21K9/69F21V5/04F21W2111/00H01L33/58H01L33/60Y10S362/80
    • It is sought to provide an indicator lamp, which is excellent not only in short distance visual recognition property but also in long distance one, as well as being further excellent in sight field angle property.An indicator lamp includes a light-emitting element 1 and a light-emitting element lens 2 having a light-emitting element mounting cavity 3 formed at the bottom, in which the light-emitting element disposed in the cavity 3 emits light to be fully reflected by the peripheral surface of the lens 1 and proceeds as emission light flux forwardly of the lens 1. The slope angle of the peripheral surface with respect to the lens axis is reduced progressively from the bottom toward the lens front surface 5 in three stages, thus forming circumferential corners 7 and 8 as boundaries between adjacent ones of the three stages. The circumferential corners scatter light emitted from the light emitting element 2 to provide concentric emission light fluxes as viewed from the side of the lens front.
    • 寻求提供一种指示灯,其不仅在短距离视觉识别性能方面也是优异的,而且在长距离视觉识别性能方面也是优异的,并且视野角特性更优异。 指示灯包括发光元件1和具有形成在底部的发光元件安装腔3的发光元件透镜2,其中设置在腔3中的发光元件发光以被完全反射 通过透镜1的周面,作为透镜1的前方的发射光束前进。周边面相对于透镜轴的倾斜角度从底部向镜头前表面5逐渐减小,因此, 形成周向角7和8作为三个阶段的相邻阶段之间的边界。 圆周角散射从发光元件2发射的光,以提供从透镜前侧观察的同心发射光束。