Method and apparatus for constant light output pulsed L.E.D. illumination
    61.
    发明授权
    Method and apparatus for constant light output pulsed L.E.D. illumination 有权
    用于恒定光输出脉冲的方法和装置L.E.D. 照明

    公开(公告)号:US07393119B2

    公开(公告)日:2008-07-01

    申请号:US11674143

    申请日:2007-02-12

    IPC分类号: F21L4/00 H05B37/02

    摘要: An illumination source includes a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for driving the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed, the control circuit changing a pulse characteristic to adjust a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output. Some embodiments provide an illumination source including a housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.

    摘要翻译: 照明源包括多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中该照明源适于手持式便携式操作。 在一些实施例中,电路还包括控制电路,用于以足够高的频率驱动LED的电脉冲,使得所产生的光具有连续而不是脉冲的人类的外观,所述控制电路改变脉冲特性以调整 具有第一特征色谱输出的具有第二特征色谱输出的光输出的比例。 一些实施例提供一种包括包括一个或多个LED的壳体的照明源; 以及控制电路,其选择性地将来自电源的功率施加到LED,从而控制LED的光输出色谱。

    METHOD AND APPARATUS FOR A PULSED L.E.D. ILLUMINATION
    63.
    发明申请
    METHOD AND APPARATUS FOR A PULSED L.E.D. ILLUMINATION 有权
    脉冲激素的方法和装置 照明

    公开(公告)号:US20070133199A1

    公开(公告)日:2007-06-14

    申请号:US11674143

    申请日:2007-02-12

    IPC分类号: F21L4/00

    摘要: An illumination source includes a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for driving the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed, the control circuit changing a pulse characteristic to adjust a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output. Some embodiments provide an illumination source including a housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.

    摘要翻译: 照明源包括多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中该照明源适于手持式便携式操作。 在一些实施例中,电路还包括控制电路,用于以足够高的频率驱动LED的电脉冲,使得所产生的光具有连续而不是脉冲的人类的外观,所述控制电路改变脉冲特性以调整 具有第一特征色谱输出的具有第二特征色谱输出的光输出的比例。 一些实施例提供一种包括包括一个或多个LED的壳体的照明源; 以及控制电路,其选择性地将来自电源的功率施加到LED,从而控制LED的光输出色谱。

    Method and apparatus for a variable intensity pulsed L.E.D. light
    64.
    发明授权
    Method and apparatus for a variable intensity pulsed L.E.D. light 有权
    用于可变强度脉冲L.E.D.的方法和装置 光

    公开(公告)号:US07186000B2

    公开(公告)日:2007-03-06

    申请号:US10945801

    申请日:2004-09-20

    IPC分类号: F21L4/02

    摘要: Improved method and apparatus for hand-held portable LED illumination. The illumination source includes a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for changing a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output, and that drives the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed. Still another aspect provides an illumination source including a housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.

    摘要翻译: 照明源包括多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中该照明源适于手持式便携式操作。 在一些实施例中,电路还包括控制电路,用于以足够高的频率驱动LED的电脉冲,使得所产生的光具有连续而不是脉冲的人类的外观,所述控制电路改变脉冲特性以调整 具有第一特征色谱输出的具有第二特征色谱输出的光输出的比例。 一些实施例提供一种包括包括一个或多个LED的壳体的照明源; 以及控制电路,其选择性地将来自电力源的功率施加到LED,从而控制LED的光输出色谱。

    Method and apparatus for a variable intensity pulsed L.E.D. light
    65.
    发明申请
    Method and apparatus for a variable intensity pulsed L.E.D. light 有权
    用于可变强度脉冲L.E.D.的方法和装置 光

    公开(公告)号:US20050040773A1

    公开(公告)日:2005-02-24

    申请号:US10945801

    申请日:2004-09-20

    摘要: Improved method and apparatus for hand-held portable LED illumination. The illumination source includes a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for changing a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output, and that drives the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed. Still another aspect provides an illumination source including a housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.

    摘要翻译: 照明源包括多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中该照明源适于手持式便携式操作。 在一些实施例中,电路还包括控制电路,用于以足够高的频率驱动LED的电脉冲,使得所产生的光具有连续而不是脉冲的人类的外观,所述控制电路改变脉冲特性以调整 具有第一特征色谱输出的具有第二特征色谱输出的光输出的比例。 一些实施例提供一种包括包括一个或多个LED的壳体的照明源; 以及控制电路,其选择性地将来自电力源的功率施加到LED,从而控制LED的光输出色谱。

    Method and apparatus for a pulsed L.E.D. illumination source
    66.
    发明申请
    Method and apparatus for a pulsed L.E.D. illumination source 有权
    脉冲L.E.D.的方法和装置 照明源

    公开(公告)号:US20030095406A1

    公开(公告)日:2003-05-22

    申请号:US10299609

    申请日:2002-11-18

    申请人: PPT Vision, Inc.

    IPC分类号: F21S009/00

    摘要: Improved method and apparatus for hand-held portable illumination. A flashlight and corresponding method are described. The flashlight includes a housing, a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the flashlight is suitable for handheld portable operation by a user. In one embodiment, the first electrical circuit further includes a control circuit for maintaining a predetermined light output level of the LED units as a charge on a battery varies. In another embodiment, the control circuit maintains an average predetermined light output level of the LED units as the charge on the battery cell varies by changing a pulse width or frequency as the charge on the battery cell varies to maintain a given average light output. Another aspect provides an illumination source that includes a light-emitting diode (LED) housing including one or more LEDs, and a control circuit that selectively applies power from a source of electric power to the LEDs, the control circuit substantially maintaining a light output characteristic of the LEDs as a voltage of the voltage source varies over a range that would otherwise vary the light output characteristic. Still another aspect provides an illumination source including a light-emitting diode (LED) housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus maintaining or controlling a light output color spectrum of the LEDs.

    摘要翻译: 改进的手持便携式照明方法和装置。 描述手电筒和相应的方法。 手电筒包括壳体,多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中手电筒适合于用户的手持式便携式操作。 在一个实施例中,第一电路还包括控制电路,用于当电池上的电荷变化时,保持LED单元的预定光输出电平。 在另一个实施例中,当电池单元上的电荷变化以维持给定的平均光输出时,随着电池单元上的电荷改变脉冲宽度或频率,控制电路维持LED单元的平均预定光输出电平。 另一方面提供了一种照明源,其包括包括一个或多个LED的发光二极管(LED)外壳,以及控制电路,其选择性地将来自电力源的功率施加到LED,所述控制电路基本上保持光输出特性 作为电压源的电压的LED在改变光输出特性的范围内变化。 另一方面提供了一种包括包括一个或多个LED的发光二极管(LED)壳体的照明源; 以及控制电路,其选择性地将来自电力源的功率施加到LED,从而维持或控制LED的光输出色谱。

    Method and apparatus for L.E.D. illumination
    67.
    发明授权
    Method and apparatus for L.E.D. illumination 有权
    L.E.D.的方法和装置 照明

    公开(公告)号:US06305818B1

    公开(公告)日:2001-10-23

    申请号:US09627268

    申请日:2000-07-28

    IPC分类号: F21L402

    摘要: Improved method and apparatus for hand-held portable illumination. A flashlight and corresponding method are described. The flashlight includes a housing, a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the flashlight is suitable for handheld portable operation by a user. In one embodiment, the first electrical circuit further includes a control circuit for maintaining a predetermined light output level of the LED units as a charge on a battery varies. In another embodiment, the control circuit maintains an average predetermined light output level of the LED units as the charge on the battery cell varies by changing a pulse width or frequency as the charge on the battery cell varies to maintain a given average light output. Another aspect provides an illumination source that includes a light-emitting diode (LED) housing including one or more LEDs, and a control circuit that selectively applies power from a source of electric power to the LEDs, the control circuit substantially maintaining a light output characteristic of the LEDs as a voltage of the voltage source varies over a range that would otherwise vary the light output characteristic. Still another aspect provides an illumination source including a light-emitting diode (LED) housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus maintaining or controlling a light output color spectrum of the LEDs.

    摘要翻译: 改进的手持便携式照明方法和装置。 描述手电筒和相应的方法。 手电筒包括壳体,多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中手电筒适合于用户的手持式便携式操作。 在一个实施例中,第一电路还包括控制电路,用于当电池上的电荷变化时,保持LED单元的预定光输出电平。 在另一个实施例中,当电池单元上的电荷变化以维持给定的平均光输出时,随着电池单元上的电荷改变脉冲宽度或频率,控制电路维持LED单元的平均预定光输出电平。 另一方面提供了一种照明源,其包括包括一个或多个LED的发光二极管(LED)外壳,以及控制电路,其选择性地将来自电力源的功率施加到LED,所述控制电路基本上保持光输出特性 作为电压源的电压的LED在改变光输出特性的范围内变化。 另一方面提供了一种包括包括一个或多个LED的发光二极管(LED)壳体的照明源; 以及控制电路,其选择性地将来自电力源的功率施加到LED,从而维持或控制LED的光输出色谱。

    Light emission circuit
    68.
    发明授权
    Light emission circuit 有权
    发光电路

    公开(公告)号:US6111367A

    公开(公告)日:2000-08-29

    申请号:US231073

    申请日:1999-01-14

    摘要: A D/A converter outputs analog voltage in a range of 0 to 2 V in accordance with a digital value in a range of 0 to 31 outputted from a light emission control unit, and supplies the analog voltage to a voltage/current conversion unit. Driving current outputted from the voltage/current conversion unit is controlled on a 1 mA unit basis in a range of 0 to 31 mA in accordance with the digital value. Driving current outputted from a voltage/current conversion unit is controlled on a 4 mA unit basis in a range of 0 to 124 mA, and driving current outputted from a voltage/current conversion unit is controlled on a 20 mA unit basis in a range of 0 to 620 mA. The voltage/current conversion units are on-off controlled in accordance with range designation signals, respectively. Accordingly, the luminance of the LED can be controlled in a wide range and accurately even in a low luminance level.

    摘要翻译: D / A转换器根据从发光控制单元输出的0〜31的范围内的数字值,输出0〜2V范围内的模拟电压,并将模拟电压提供给电压/电流转换单元。 从电压/电流转换单元输出的驱动电流根据数字值在0〜31mA的范围内以1mA为单位进行控制。 从电压/电流转换单元输出的驱动电流在0〜124mA的范围内以4mA单位进行控制,从电压/电流转换单元输出的驱动电流在20mA单位的基础上控制在 0〜620mA。 电压/电流转换单元分别根据范围指定信号进行开关控制。 因此,即使在低亮度水平下,LED的亮度也能够在宽范围内精确地被控制。

    Method and apparatus for an L.E.D. flashlight
    69.
    发明授权
    Method and apparatus for an L.E.D. flashlight 失效
    L.E.D.的方法和装置 手电筒

    公开(公告)号:US6095661A

    公开(公告)日:2000-08-01

    申请号:US44559

    申请日:1998-03-19

    摘要: Improved method and apparatus for hand-held portable illumination. A flashlight and corresponding method are described. The flashlight includes a housing, a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the flashlight is suitable for handheld portable operation by a user. In one embodiment, the first electrical circuit further includes a control circuit for maintaining a predetermined light output level of the LED units as a charge on a battery varies. In another embodiment, the control circuit maintains an average predetermined light output level of the LED units as the charge on the battery cell varies by changing a pulse width or frequency as the charge on the battery cell varies to maintain a given average light output. Another aspect provides an illumination source that includes a light-emitting diode (LED) housing including one or more LEDs, and a control circuit that selectively applies power from a source of electric power to the LEDs, the control circuit substantially maintaining a light output characteristic of the LEDs as a voltage of the voltage source varies over a range that would otherwise vary the light output characteristic. Still another aspect provides an illumination source including a light-emitting diode (LED) housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus maintaining or controlling a light output color spectrum of the LEDs.

    摘要翻译: 改进的手持便携式照明方法和装置。 描述手电筒和相应的方法。 手电筒包括壳体,多个LED以及选择性地将电力从DC电压源施加到LED单元的电路,其中手电筒适合于用户的手持式便携式操作。 在一个实施例中,第一电路还包括控制电路,用于当电池上的电荷变化时,保持LED单元的预定光输出电平。 在另一个实施例中,当电池单元上的电荷变化以维持给定的平均光输出时,随着电池单元上的电荷改变脉冲宽度或频率,控制电路维持LED单元的平均预定光输出电平。 另一方面提供了一种照明源,其包括包括一个或多个LED的发光二极管(LED)外壳,以及控制电路,其选择性地将来自电力源的功率施加到LED,所述控制电路基本上保持光输出特性 作为电压源的电压的LED在改变光输出特性的范围内变化。 另一方面提供了一种包括包括一个或多个LED的发光二极管(LED)壳体的照明源; 以及控制电路,其选择性地将来自电力源的功率施加到LED,从而维持或控制LED的光输出色谱。