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    • 21. 发明授权
    • Vehicle headlamp comprising a discharge lamp including an inner envelope
and a surrounding shroud
    • 车辆前照灯包括具有内封套和周围护罩的放电灯
    • US5388034A
    • 1995-02-07
    • US945768
    • 1992-09-16
    • Gary R. AllenL. Abigail AinsworthJohn M. DavenportRichard L. HanslerWalter J. Kosmatka
    • Gary R. AllenL. Abigail AinsworthJohn M. DavenportRichard L. HanslerWalter J. Kosmatka
    • F21S8/10F21V11/16H01J61/30H01J61/34B60Q1/04
    • H01J61/34F21S48/1186F21S48/145H01J61/30
    • This headlamp comprises a reflector and a discharge lamp comprising an inner envelope having a longitudinal axis coinciding with the optical axis of the reflector. The inner envelope includes a bulbous portion, a front leg extending along the optical axis from the bulbous portion toward the front of the headlamp, and a back leg extending along the optical axis from the bulbous portion toward the reflector. The discharge lamp further comprises a tubular shroud comprising a first hollow portion surrounding the front leg of the inner envelope, a second hollow portion surrounding the back leg of the inner envelope, and a bulbous portion between the two hollow portions. The bulbous portion of the shroud has a central longitudinal axis, and this central axis is upwardly offset by a small distance (e.g., at least about 0.5 mm) from the longitudinal axis of the inner envelope on which the discharge is located. The presence of this offset has been found to substantially increase the ratio of the seeing light to the glare light (i.e., the SGR) in the headlamp beam as compared to that present when there is no offset between these axes.
    • 该前照灯包括反射器和放电灯,其包括具有与反射器的光轴重合的纵向轴线的内封套。 内包络线包括一个球根部分,一个沿着光轴从球形部分向前照灯的前方延伸的前腿,以及一个沿着光轴从球形部分向反射器延伸的后腿。 放电灯还包括管状护罩,其包括围绕内部封套的前腿的第一中空部分,围绕内部封套的后腿的第二中空部分和两个中空部分之间的球形部分。 护罩的球形部分具有中心纵向轴线,并且该中心轴线向上偏移距离放电位置所在的内部封套的纵向轴线的小距离(例如,至少约0.5mm)。 已经发现,当在这些轴之间没有偏移时,与前者相比,已经发现这种偏移的存在大大增加了前照灯光束中的观察光与眩光(即,SGR)的比率。
    • 25. 发明授权
    • Apparatus and method to compensate for refraction of radiation
    • 用于补偿辐射折射的装置和方法
    • US4912529A
    • 1990-03-27
    • US083744
    • 1987-08-07
    • Gary R. AllenPhilip E. Moskowitz
    • Gary R. AllenPhilip E. Moskowitz
    • G01J1/42G01N21/25
    • G01N21/255G01J2001/4247G01N2201/0638
    • An apparatus to compensate for refraction of radiation passing through a curved wall of an article is provided. The apparatus of a preferred embodiment is particularly advantageous for use in arc tube discharge diagnostics. The apparatus of the preferred embodiment includes means for pre-refracting radiation on a predetermined path by an amount equal and inverse to refraction which occurs when radiation passes through a first wall of the arc tube such that, when the radiation passes through the first wall of the arc tube and into the cavity thereof, the radiation passes through the cavity approximately on the predetermined path; means for releasably holding the article such that the radiation passes through the cavity thereof; and means for post-refracting radiation emerging from a point of the arc tube opposite its point of entry by an amount equal and inverse to refraction which occurs when radiation emerges from the arc tube. In one embodiment the means for pre-refracting radiation includes a first half tube comprising a longitudinally bisected tube obtained from a tube which is approximately identical to the arc tube's cylindrical portion and a first cylindrical lens, the first half tube being mounted with its concave side facing the radiation source and the first cylindrical lens being mounted between the first half tube and the arc tube and the means for post-refracting radiation includes a second half tube comprising a longitudinally bisected tube obtained from a tube which is approximately identical to the arc tube's cylindrical portion and a second cylindrical lens, the second half tube being mounted with its convex side facing the radiation source and the second cylindrical lens being mounted between the arc tube and the second half tube. Methods to compensate for refraction of radiation passing into and out of an arc tube is also provided.
    • 提供了用于补偿穿过物品的弯曲壁的辐射的折射的装置。 优选实施例的装置对于用于电弧管放电诊断是特别有利的。 优选实施例的装置包括用于将预定路径上的辐射预折射与辐射通过电弧管的第一壁时发生的折射相等和相反的量的装置,使得当辐射通过第 电弧管并进入其空腔,辐射大致在预定路径上通过空腔; 用于可释放地保持物品使得辐射通过其空腔的装置; 以及用于将从电弧管的与其入口相反的点出射的辐射的后折射量与辐射从电弧管出射时发生的相等和相反的折射。 在一个实施例中,用于预折射辐射的装置包括:第一半管,其包括从与所述电弧管的圆柱形部分大致相同的管获得的纵向平分管和第一柱面透镜,所述第一半管安装有其凹面 面对辐射源并且第一柱面透镜安装在第一半管和电弧管之间,并且用于后折射辐射的装置包括第二半管,该第二半管包括从管获得的纵向平分管,其与电弧管的 圆筒部分和第二柱面透镜,第二半管安装成其凸面面对辐射源,第二柱面透镜安装在电弧管和第二半管之间。 还提供了补偿进入和离开电弧管的辐射的折射的方法。