LIGHT SOURCE APPARATUS AND PROJECTOR

    公开(公告)号:US20220236631A1

    公开(公告)日:2022-07-28

    申请号:US17580789

    申请日:2022-01-21

    发明人: Satoshi KITO

    IPC分类号: G03B21/20 H04N9/31 G02B26/00

    摘要: A light source apparatus according to an aspect of the present disclosure includes an excitation light source that outputs excitation light, a ceramic phosphor that has a first surface and a second surface, converts in terms of wavelength part of the excitation light outputted from the excitation light source and incident via the first surface to generate fluorescence, and causes the fluorescence to exit via the second surface, and a substrate that supports the first surface of the ceramic phosphor. The excitation light outputted from the excitation light source is incident on an exposed portion of the first surface of the ceramic phosphor that is the portion exposed via the substrate. The distance in the exposed portion from an irradiated region irradiated with the excitation light to the substrate is 0.34 mm or greater.

    DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD
    4.
    发明申请
    DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD 有权
    放电灯驱动装置,投影仪和放电灯驱动方法

    公开(公告)号:US20160360600A1

    公开(公告)日:2016-12-08

    申请号:US15168634

    申请日:2016-05-31

    摘要: A discharge lamp driving device according to one aspect of the invention includes a discharge lamp driving section configured to supply a driving current to a discharge lamp including electrodes and a control section configured to control the discharge lamp driving section. The control section controls the discharge lamp driving section such that a mixed period is provided in which a first period in which an alternating current having a first frequency is supplied to the discharge lamp and a second period in which a direct current is supplied to the discharge lamp are alternately repeated. The first frequency includes a plurality of frequencies different from one another. The control section temporally changes the length of the first period.

    摘要翻译: 根据本发明的一个方面的放电灯驱动装置包括:放电灯驱动部,被配置为向包括电极的放电灯提供驱动电流;以及控制部,被配置为控制放电灯驱动部。 控制部分控制放电灯驱动部分,使得提供混合周期,其中将具有第一频率的交流电被提供给放电灯的第一周期和向放电灯提供直流电流的第二周期 灯交替重复。 第一频率包括彼此不同的多个频率。 控制部分暂时改变第一周期的长度。

    PROJECTOR AND METHOD OF CONTROLLING PROJECTOR
    5.
    发明申请
    PROJECTOR AND METHOD OF CONTROLLING PROJECTOR 有权
    投影机和投影机控制方法

    公开(公告)号:US20160274445A1

    公开(公告)日:2016-09-22

    申请号:US15065263

    申请日:2016-03-09

    发明人: Satoshi KITO

    IPC分类号: G03B21/16 G03B21/00 G03B21/20

    摘要: A projector according to an aspect of the invention includes a discharge lamp having a light emitting tube and configured to emit light, a light modulation device configured to modulate the light emitted from the discharge lamp in accordance with an image signal, a projection optical system configured to project the light modulated by the light modulation device, a first detection section configured to detect ultraviolet light out of the light emitted from the discharge lamp, and a control section configured to determine a deterioration state of the light emitting tube based on a light intensity of the ultraviolet light detected by the first detection section.

    摘要翻译: 根据本发明的投影仪包括具有发光管并被配置为发光的放电灯,配置成根据图像信号调制从放电灯发射的光的光调制装置,配置成投影光学系统的投影光学系统 投射由光调制装置调制的光,第一检测部,被配置为检测从放电灯发出的光中的紫外光;以及控制部,被配置为基于光强度来确定发光管的劣化状态 的由第一检测部检测出的紫外线。

    DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD
    6.
    发明申请
    DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD 有权
    放电灯驱动装置,投影仪和放电灯驱动方法

    公开(公告)号:US20150156853A1

    公开(公告)日:2015-06-04

    申请号:US14543148

    申请日:2014-11-17

    发明人: Satoshi KITO

    IPC分类号: H05B41/34 G03B21/00 G03B21/20

    摘要: A discharge lamp driving device includes a discharge lamp driving section configured to supply a driving current to a discharge lamp, the driving current being an alternating current for driving the discharge lamp, and a control section configured to control the discharge lamp driving section. The control section controls the discharge lamp driving section such that the driving current having a driving frequency different from a natural frequency of the discharge lamp and a frequency of 1/2n (n is a natural number) times the natural frequency is supplied to the discharge lamp.

    摘要翻译: 放电灯驱动装置包括:放电灯驱动部,被配置为向放电灯供给驱动电流;驱动电流是用于驱动放电灯的交流电;以及控制部,被配置为控制放电灯驱动部。 控制部分控制放电灯驱动部分,使得具有与放电灯的固有频率不同的驱动频率和1 / 2n(n是自然数)的频率乘以固有频率的驱动电流被提供给放电 灯。

    LIGHT SOURCE APPARATUS AND PROJECTOR
    7.
    发明申请

    公开(公告)号:US20190302593A1

    公开(公告)日:2019-10-03

    申请号:US16366027

    申请日:2019-03-27

    发明人: Satoshi KITO

    摘要: A light source apparatus according to an aspect of the invention includes an excitation light source that emits excitation light, a wavelength conversion layer on which the excitation light is incident and which converts the wavelength of the excitation light to emit fluorescence, a plurality of traveling direction changers that are formed in the wavelength conversion layer and change the traveling direction of the fluorescence, and a substrate on which the wavelength conversion layer is provided. The substrate is rotated around an axis of rotation to change the position on which the excitation light is incident on the wavelength conversion layer over time, and the interval between the plurality of traveling direction changers is smaller than the size of the region on which the excitation light is incident.

    WAVELENGTH CONVERSION ELEMENT, WAVELENGTH CONVERTER, LIGHT SOURCE APPARATUS, AND PROJECTOR

    公开(公告)号:US20190113763A1

    公开(公告)日:2019-04-18

    申请号:US16162917

    申请日:2018-10-17

    发明人: Satoshi KITO

    摘要: A wavelength conversion element includes a substrate having a first surface, a first phosphor layer that has a first excitation light incident surface on which excitation light having a first wavelength is incident, is so provided as to face the first surface, a second phosphor layer that is so provided as to be in contact with part of the first excitation light incident surface, and a reflection layer that is provided between the first phosphor layer and the substrate. The first phosphor layer has an annular shape. The area of the second phosphor layer viewed in the direction in which the excitation light is incident is smaller than the area of the first phosphor layer viewed in the direction in which the excitation light is incident. The thickness of the second phosphor layer is smaller than the thickness of the first phosphor layer.

    DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD
    9.
    发明申请
    DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD 有权
    放电灯驱动装置,投影仪和放电灯驱动方法

    公开(公告)号:US20160320693A1

    公开(公告)日:2016-11-03

    申请号:US15139022

    申请日:2016-04-26

    摘要: A discharge lamp driving device includes a discharge lamp driving unit configured to supply a driving current to a discharge lamp including electrodes, a controller configured to control the discharge lamp driving unit, and a voltage detection unit configured to detect an inter-electrode voltage of the discharge lamp, in which the controller controls the discharge lamp driving unit so that the driving current includes a hybrid period in which a first period for supplying an AC current with a first frequency to the discharge lamp and a second period for supplying a DC current to the discharge lamp are alternately repeated, in which the first frequency includes a plurality of different frequencies, and in which the controller changes the first frequency on the basis of at least one of the detected inter-electrode voltage and driving power supplied to the discharge lamp.

    摘要翻译: 放电灯驱动装置包括:放电灯驱动单元,被配置为向包括电极的放电灯提供驱动电流;控制器,被配置为控制放电灯驱动单元;以及电压检测单元,被配置为检测所述放电灯驱动单元的电极间电压 放电灯,其中控制器控制放电灯驱动单元,使得驱动电流包括混合时段,其中向放电灯提供具有第一频率的AC电流的第一周期和用于将DC电流提供给第二周期 交替地重复放电灯,其中第一频率包括多个不同的频率,并且其中控制器基于检测到的电极间电压和提供给放电灯的驱动功率中的至少一个来改变第一频率 。

    DRIVING DEVICE AND DRIVING METHOD FOR DISCHARGE LAMP, LIGHT SOURCE DEVICE, AND PROJECTOR
    10.
    发明申请
    DRIVING DEVICE AND DRIVING METHOD FOR DISCHARGE LAMP, LIGHT SOURCE DEVICE, AND PROJECTOR 有权
    放电灯,光源装置和投影仪的驱动装置和驱动方法

    公开(公告)号:US20140063471A1

    公开(公告)日:2014-03-06

    申请号:US14016626

    申请日:2013-09-03

    IPC分类号: H05B41/36

    摘要: A light source device includes a discharge lamp including a pair of electrodes arranged to be opposed to each other in a hollow section in which a discharge medium is encapsulated and a driving device. The driving device includes a supplying unit configured to supply an alternating current having a frequency higher than 1 kHz to the pair of electrodes in a high-frequency period and a control unit configured to set at least a first frequency higher than 1 kHz and a second frequency higher than 1 kHz and different from the first frequency as the frequency of the alternating current, switch an alternating current having the first frequency and an alternating current having the second frequency in the high-frequency period, and control the supplying unit to repeat the high-frequency period to supply an alternating current to the pair of electrodes.

    摘要翻译: 光源装置包括放电灯,其包括在封装有放电介质的中空部分中布置成彼此相对的一对电极和驱动装置。 所述驱动装置包括:供给部,被配置为在高频周期中向所述一对电极提供具有高于1kHz的频率的交流电;以及控制部,被配置为至少设定高于1kHz的第一频率, 频率高于1kHz并且与第一频率不同,作为交流电流的频率,在高频周期中切换具有第一频率的交流电和具有第二频率的交流电,并且控制供电单元重复 高频周期,以向一对电极提供交流电。