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热词
    • 120. 发明公开
    • FLASH LIGHTING DEVICE
    • 闪光灯装置
    • EP0252159A1
    • 1988-01-13
    • EP87900689.8
    • 1987-01-08
    • POLAROID CORPORATION
    • ICHIMURA, Hajime
    • G03B27/54
    • G03B27/542
    • 57 A flash lighting device for a copier or the like in which the whole surface of an original is simultaneously irradiated with light from a reflection umbrella that surrounds flash lamps and that has an opening on the side facing the irradiation surface and from one or more flash lamps that have an optical converge/diverge element to cover the opening, and the reflected light is focused on a photosensitive material via an optical system to expose it. The optical converge/diverge element is provided with a function of an ND filter which has such a density distribution as to decrease the quantity of light directly falling from the flash lamps onto the original, thus improving the uniformity of the luminosity distribution produced by the flash lamps on the surface of the original.
    • 57一种用于复印机等的闪光照明装置,其中原件的整个表面同时被来自围绕闪光灯的反射伞的光照射并且在面向照射表面的一侧具有开口并且来自一个或多个闪光 具有用于覆盖开口的光学会聚/发散元件的灯,并且反射光通过光学系统聚焦在光敏材料上以将其曝光。 光学会聚/发散元件具有ND滤光片的功能,该ND滤光片具有这样的密度分布,以减少从闪光灯直接落入原件上的光量,从而改善由闪光产生的光度分布的均匀性 原始表面上的灯。