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    • 2. 发明授权
    • High frequency inductive lamp and power oscillator
    • 高频感应灯和功率振荡器
    • US6137237A
    • 2000-10-24
    • US228230
    • 1999-01-11
    • Donald A. MacLennanBrian P. TurnerJames T. DolanDouglas A. KirkpatrickYongzhang Leng
    • Donald A. MacLennanBrian P. TurnerJames T. DolanDouglas A. KirkpatrickYongzhang Leng
    • H01J61/12H01J61/52H01J65/04H05B41/24H05B41/16
    • H05B41/24H01J61/12H01J61/125H01J61/523H01J65/044H01J65/048Y02B20/22
    • A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably as high as 915 MHz. Preferably, the excitation coil is configured as a non-helical, semi-cylindrical conductive surface having less than one turn, in the general shape of a wedding ring. At high frequencies, the current in the coil forms two loops which are spaced apart and parallel to each other. Configured appropriately, the coil approximates a Helmholtz configuration. The lamp preferably utilizes an bulb encased in a reflective ceramic cup with a pre-formed aperture defined therethrough. The ceramic cup may include structural features to aid in alignment and/or a flanged face to aid in thermal management. The lamp head is preferably an integrated lamp head comprising a metal matrix composite surrounding an insulating ceramic with the excitation integrally formed on the ceramic. A novel solid-state oscillator preferably provides RF power to the lamp. The oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to match the driving frequency of the oscillator to a plurality of tuning states of the lamp.
    • 高频电感耦合无电极灯包括具有小于施加到其上的驱动频率的一半波长的有效电长度的励磁线圈,优选地少得多。 驱动频率可以大于100MHz,优选高达915MHz。 优选地,激励线圈被配置为具有小于一圈的非螺旋,半圆柱形导电表面,具有结婚戒指的一般形状。 在高频时,线圈中的电流形成两个彼此间隔开并平行的环。 配置适当,线圈接近亥姆霍兹配置。 灯优选地利用封装在反射陶瓷杯中的灯泡,其中形成有预先形成的孔。 陶瓷杯可以包括有助于对准的结构特征和/或凸缘面以辅助热管理。 灯头优选是集成灯头,其包括围绕绝缘陶瓷的金属基体复合体,其中整体形成在陶瓷上的激发。 新颖的固态振荡器优选地向灯提供RF功率。 振荡器是能够以超过70%效率提供超过70瓦功率的单个有源元件器件。 可以采用各种控制电路来将振荡器的驱动频率与灯的多个调谐状态相匹配。
    • 4. 发明授权
    • Lamp with improved color rendering
    • 灯具具有改进的显色性能
    • US06469444B1
    • 2002-10-22
    • US09647528
    • 2000-10-02
    • Yongzhang LengJames T. DolanBruce Shanks
    • Yongzhang LengJames T. DolanBruce Shanks
    • H01J1720
    • H01J65/044H01J61/125
    • A discharge lamp for providing visible radiation includes a lamp envelope which is made of light transmissive material a fill in the envelope including either calcium halide or strontium halide together with either elemental sulfur or elemental selenium in gaseous form which is obtainable when the fill is excited by sufficient power in operation, in an amount such that the excited fill emits a discharge of visible radiation from the fill with substantially all of the radiation being molecular radiation which is emitted in the visible region of the spectrum. The calcium halide or strontium halide operates at a vapor pressure which provides a significant amount of radiation in the red region of the spectrum therefrom and the overall spectrum has a color rendering index of about 87 or more.
    • 一种用于提供可见辐射的放电灯包括一个由透光材料制成的灯泡,灯泡填充在外壳中,包括卤化钙或卤化锶,以及气态形式的元素硫或元素硒,当填充物被 足够的功率,使得激发的填充物从填充物中发射可见光的放电,其中基本上所有的辐射是在光谱的可见光区域中发射的分子辐射。 卤化钙或卤化锶在蒸气压下工作,该蒸气压在其光谱的红色区域提供了大量的辐射,整个光谱的显色指数为约87或更高。