公开(公告)号：US09532439B2

公开(公告)日：2016-12-27

申请号：US14503853

申请日：2014-10-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoichi Nakagomi ,  Junichi Suzuki

IPC: H05B41/36 ,  H05B41/392 ,  H04N9/31

CPC classification number: H05B41/3927 ,  H04N9/312 ,  H04N9/3155 ,  H04N9/3167 ,  H04N9/3197 ,  H05B41/16 ,  H05B41/382

Abstract: A discharge lamp driving device includes: a discharge lamp driving unit which supplies drive power to a discharge lamp; and a control unit which controls the discharge lamp driving unit according to a waveform of the drive power. The waveform has n launching periods and a low-power mode lighting period. The n launching periods include a first launching period in which the drive power increases toward refresh power that is equal to or above drive power in a low-power mode and equal to or below rated power, and (n−1) launching periods in which the drive power is maintained at the refresh power. The control unit, in an x-th launching period, supplies the discharge lamp with a drive current having a drive frequency equal to or below a drive frequency of a drive current supplied to the discharge lamp in an (x−1)th launching period.

Abstract translation: 放电灯驱动装置包括：放电灯驱动单元，其向放电灯提供驱动电力; 以及控制单元，其根据驱动力的波形控制放电灯驱动单元。 波形具有n个发射周期和低功率模式发光周期。 n个发射期包括驱动功率在低功率模式下等于或大于驱动功率并等于或低于额定功率的刷新功率增加的第一发射周期，以及（n-1）发射周期，其中 驱动功率保持在刷新功率。 所述控制单元在第x发射周期中向所述放电灯提供在（x-1）发射周期内具有等于或低于提供给所述放电灯的驱动电流的驱动频率的驱动频率的驱动电流 。

公开(公告)号：US09602791B2

公开(公告)日：2017-03-21

申请号：US15045739

申请日：2016-02-17

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuo Terashima ,  Yoichi Nakagomi

IPC: H04N9/31 ,  G03B21/20 ,  G03B21/00 ,  H05B41/292 ,  H05B41/288

CPC classification number: H04N9/3197 ,  G03B21/006 ,  G03B21/2053 ,  H04N9/3123 ,  H04N9/3141 ,  H04N9/3179 ,  H05B41/2887 ,  H05B41/2928 ,  Y02B20/202

Abstract: A discharge lamp driving device includes a discharge lamp driving unit configured to supply driving current to a discharge lamp provided with a first electrode and a second electrode, and a controller configured to control the discharge lamp driving unit. The driving current includes a first AC period and a second AC period in which an AC current is supplied. The first AC period includes a plurality of consecutive first unit driving periods each of which is formed of a first polarity period and a second polarity period, a length of the first polarity period being larger than a length of the second polarity period. The second AC period includes a plurality of consecutive second unit driving periods each of which is formed of the first polarity period and the second polarity period, the length of the second polarity period being larger than the length of the first polarity period.

公开(公告)号：US09398275B2

公开(公告)日：2016-07-19

申请号：US14637147

申请日：2015-03-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Junichi Suzuki ,  Yoichi Nakagomi

IPC: H05B41/392 ,  H04N9/31 ,  G03B21/00 ,  H05B41/288

CPC classification number: H04N9/312 ,  G03B21/005 ,  G03B21/202 ,  H04N9/3105 ,  H04N9/3155 ,  H05B41/2883 ,  H05B41/3928 ,  Y02B20/202

Abstract: A discharge lamp driving device includes: a discharge lamp driving unit that supplies a driving current for driving a discharge lamp to the discharge lamp; and a control unit that controls the discharge lamp driving unit. The control unit controls the discharge lamp driving unit such that the driving current having driving periods is supplied to the discharge lamp, the driving period including: a mixing period which alternately has an AC period in which an alternating current is supplied to the discharge lamp and a first DC period in which a direct current is supplied to the discharge lamp and a second DC period which is provided immediately after the mixing period and in which a direct current having a polarity which is opposite to that of the direct current in the first DC period is supplied to the discharge lamp.

Abstract translation: 放电灯驱动装置包括：放电灯驱动单元，其向放电灯提供用于驱动放电灯的驱动电流; 以及控制单元，其控制放电灯驱动单元。 所述控制单元控制所述放电灯驱动单元，使得具有驱动周期的驱动电流被提供给所述放电灯，所述驱动周期包括：交替地具有向所述放电灯提供交流电的AC周期的混合周期;以及 直流电流被提供给放电灯的第一直流周期和在混合周期之后立即提供的第二直流周期，其中具有与第一直流中的直流电的极性相反的极性的直流 周期被提供给放电灯。

公开(公告)号：US09288884B2

公开(公告)日：2016-03-15

申请号：US14134269

申请日：2013-12-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoichi Nakagomi ,  Tetsuo Terashima

IPC: G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B41/292 ,  H05B41/288

CPC classification number: H05B41/2928 ,  H05B41/2882

Abstract: A discharge lamp lighting method for controlling lighting of a discharge lamp includes varying an amount of generation (current value) of overshoot and undershoot generated in a waveform of a drive current that is applied when driving the discharge lamp, according to a magnitude of drive power supplied to the discharge lamp and a drive mode.

Abstract translation: 用于控制放电灯的点亮的放电灯点亮方法包括根据驱动功率的大小来改变在驱动放电灯时施加的驱动电流的波形中产生的过冲和下冲的产生量（电流值） 提供给放电灯和驱动模式。

公开(公告)号：US11480860B2

公开(公告)日：2022-10-25

申请号：US16910145

申请日：2020-06-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroaki Miya ,  Akihiro Kashiwagi ,  Tomohiro Takagi ,  Yoichi Nakagomi

IPC: G03B21/20 ,  G02B3/00 ,  H04N9/31

Abstract: An illuminator includes a first light source, a second light source, a first lens on which light emitted from the first and second light sources is incident, a second lens disposed in a downstream of the first lens, and a half wave plate. The first lens, the second lens and the half wave plate are arranged along a first axis. The first light source and the second light source are arranged along a plane perpendicular to the first axis. The half wave plate is disposed in the optical axis between the first lens and the second lens, the half wave plate being disposed in a position close to the second lens.

公开(公告)号：US10237521B2

公开(公告)日：2019-03-19

申请号：US15059892

申请日：2016-03-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Shun Sato ,  Tetsuo Terashima ,  Yoichi Nakagomi

IPC: H04N9/31 ,  H05B41/38 ,  H05B41/288

Abstract: According to an aspect of the invention, a discharge lamp driving device includes a discharge lamp driving section, a control section, and a voltage detecting section. The control section is configured to execute a first discharge lamp driving for executing a first control and a second control for supplying a driving current including a direct current and an alternating current to a discharge lamp. In the first discharge lamp driving, the control section executes the first control when the interelectrode voltage is equal to or smaller than a first threshold voltage at predetermined setting timing and executes the second control when the interelectrode voltage is larger than the first threshold voltage at the predetermined setting timing. A rate of the direct current in the second control is larger than a rate of the direct current in the first control.

公开(公告)号：US09872370B2

公开(公告)日：2018-01-16

申请号：US15355960

申请日：2016-11-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoichi Nakagomi ,  Junichi Suzuki

IPC: H05B37/02 ,  H05B41/392 ,  H04N9/31 ,  H05B41/16 ,  H05B41/38

CPC classification number: H05B41/3927 ,  H04N9/312 ,  H04N9/3155 ,  H04N9/3167 ,  H04N9/3197 ,  H05B41/16 ,  H05B41/382

Abstract: A discharge lamp driving device includes: a discharge lamp driving unit which supplies drive power to a discharge lamp; and a control unit which controls the discharge lamp driving unit according to a waveform of the drive power. The waveform has n launching periods and a low-power mode lighting period. The n launching periods include a first launching period in which the drive power increases toward refresh power that is equal to or above drive power in a low-power mode and equal to or below rated power, and (n−1) launching periods in which the drive power is maintained at the refresh power. The control unit, in an x-th launching period, supplies the discharge lamp with a drive current having a drive frequency equal to or below a drive frequency of a drive current supplied to the discharge lamp in an (x−1)th launching period.

公开(公告)号：US09338416B2

公开(公告)日：2016-05-10

申请号：US14636944

申请日：2015-03-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Junichi Suzuki ,  Yoichi Nakagomi

IPC: H05B41/392 ,  H04N9/31 ,  G03B21/00 ,  H05B41/288

CPC classification number: H04N9/312 ,  G03B21/005 ,  G03B21/202 ,  H04N9/3105 ,  H04N9/3155 ,  H05B41/2883 ,  H05B41/3928

Abstract: A discharge lamp driving device includes: a discharge lamp driving unit that supplies a driving current to the discharge lamp; and a control unit that controls the discharge lamp driving unit. The driving current having driving periods is supplied, the driving period including: a mixing period which alternately has an AC period in which an alternating current is supplied and a first DC period in which a direct current is supplied, a second DC period which is provided immediately after the mixing period and in which a direct current having a polarity which is the same as that of the direct current in the first DC period is supplied, and a third DC period which is provided immediately after the second DC period and in which a direct current having a polarity opposite to that of the direct current in the second DC period is supplied.

Abstract translation: 放电灯驱动装置包括：放电灯驱动单元，其向放电灯提供驱动电流; 以及控制单元，其控制放电灯驱动单元。 提供具有驱动周期的驱动电流，驱动周期包括：交替地具有提供交流电的交流周期和提供直流电流的第一直流周期的混合周期，设置的第二直流周期 紧接在混合期间之后，提供具有与第一直流周期中的直流电的极性相同的直流的直流电，以及在第二直流周期之后立即设置的第三直流周期， 提供具有与第二直流周期中的直流电极极性相反极性的直流电流。

公开(公告)号：US09563111B2

公开(公告)日：2017-02-07

申请号：US14507196

申请日：2014-10-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoichi Nakagomi ,  Junichi Suzuki ,  Tetsuo Terashima

IPC: H05B37/02 ,  G03B21/20 ,  H05B41/288

CPC classification number: G03B21/2053 ,  G03B21/2026 ,  H05B41/2887 ,  H05B41/2888 ,  Y02B20/202

Abstract: A discharge lamp driving device includes: a discharge lamp driving unit which supplies drive power to a discharge lamp having electrodes; a storage unit which stores information with respect to the discharge lamp; and a control unit which controls the discharge lamp driving unit, wherein the control unit is configured to execute a stationary lighting driving in which first drive power is supplied to the discharge lamp and a high-power driving in which second drive power that is higher than the first drive power is supplied to the discharge lamp, and the control unit sets first execution information of the high-power driving on the basis of first information with respect to the high-power driving stored in the storage unit, at a predetermining setting timing, and controls the discharge lamp driving unit according to the first execution information.

Abstract translation: 放电灯驱动装置包括：放电灯驱动单元，其向具有电极的放电灯提供驱动电力; 存储单元，其存储关于放电灯的信息; 以及控制单元，其控制放电灯驱动单元，其中所述控制单元被配置为执行其中向所述放电灯提供第一驱动功率的静止点亮驱动和高功率驱动，其中所述第二驱动功率高于 第一驱动电力被提供给放电灯，并且控制单元基于关于存储在存储单元中的大功率驱动的第一信息，在预定的设置定时处设置高功率驱动的第一执行信息 并且根据第一执行信息控制放电灯驱动单元。

公开(公告)号：US09509965B2

公开(公告)日：2016-11-29

申请号：US14506087

申请日：2014-10-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoichi Nakagomi ,  Junichi Suzuki ,  Tetsuo Terashima

IPC: H05B41/36 ,  H04N9/31 ,  H05B41/288

CPC classification number: H04N9/3155 ,  H05B41/2887 ,  H05B41/2888

Abstract: A discharge lamp driving device includes: a discharge lamp driving unit which supplies drive power to a discharge lamp; and a control unit which controls the discharge lamp driving unit. The control unit is configured to execute a first driving in which first drive power is supplied to the discharge lamp and a second driving in which second drive power that is equal to or higher than the first drive power and equal to or lower than rated power of the discharge lamp is supplied to the discharge lamp. The control unit executes the second driving in a launching period of the discharge lamp, and adjusts a heat load applied to the discharge lamp in the second driving executed in the launching period, according to a degree of deterioration of the discharge lamp.

Abstract translation: 放电灯驱动装置包括：放电灯驱动单元，其向放电灯提供驱动电力; 以及控制单元，其控制放电灯驱动单元。 控制单元被配置为执行第一驱动，其中第一驱动功率被提供给放电灯，以及第二驱动，其中第二驱动功率等于或高于第一驱动功率，并且等于或低于第一驱动功率的额定功率 放电灯被提供给放电灯。 控制单元在放电灯的发射周期中执行第二驱动，并且根据放电灯的劣化程度来调节在发射周期中执行的第二驱动中对放电灯施加的热负荷。