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    • 7. 发明授权
    • Flash apparatus capable of varying emission angle
    • 能够改变发射角的闪光装置
    • US6011929A
    • 2000-01-04
    • US900296
    • 1997-07-25
    • Mitsuo FukeKatsunori KawabataKatsumi Horinishi
    • Mitsuo FukeKatsunori KawabataKatsumi Horinishi
    • G02B5/02F21V5/02F21V17/02F21V19/02G02B3/06G02B3/08G03B15/05G03B15/06G03B15/02
    • F21V5/02F21V17/02F21V19/02G03B15/05G03B15/06G03B2215/0528
    • A flash apparatus capable of varying the emission angle according to the present invention is characterized in that a light controller provided in front of a reflector for diffusing or condensing supplied light is configured to comprise a diffusion controlling portion having light diffusive action only with respect to a longitudinal direction of a bar-like light source and a condensation controlling portion having condensing action to omnidirectionally condense supplied light. By this, the flash apparatus capable of varying the emission angle can control and restrict prism action at the light controller by diffusing light emitted from the bar-like light source in respect to the longitudinal direction of the bar-like light source even when the bar-like light source and the light controller are close to each other. As a result, unevenness of light distribution (rainbow-like unevenness) based on the prism action at the light controller can be prevented from occurring even in a state on the wide side when the light emitting portion is miniaturized.
    • 根据本发明的能够改变发射角度的闪光装置的特征在于,设置在反射器前面的用于扩散或冷凝所提供的光的光控制器被配置为包括扩散控制部分,其仅具有相对于 棒状光源的纵向方向和冷凝控制部分,其具有使所提供的光全方位冷凝的聚光作用。 由此,能够改变发光角度的闪光灯装置可以通过相对于棒状光源的长度方向扩散从棒状光源射出的光来控制和限制光控制器的棱镜作用, 类光源和光控制器彼此靠近。 结果,即使在发光部分小型化的情况下,即使在宽侧的状态下,也可以防止在光控制器处的基于棱镜作用的光分布(彩虹状不均匀)的不均匀性。