JP2016167347A5 - - Google Patents
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- JP2016167347A5 JP2016167347A5 JP2015045581A JP2015045581A JP2016167347A5 JP 2016167347 A5 JP2016167347 A5 JP 2016167347A5 JP 2015045581 A JP2015045581 A JP 2015045581A JP 2015045581 A JP2015045581 A JP 2015045581A JP 2016167347 A5 JP2016167347 A5 JP 2016167347A5
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Description
例えば、複数の周波数の交流電流と直流電流とを組み合わせた駆動電流を放電灯９０に供給する場合、初期の段階では、突起５５２ｐが形成される。しかし、長時間の使用により放電灯９０が劣化するのに伴って、徐々に突起５５２ｐが形成されにくくなり、安定した電極形状が維持できなくなる場合がある。
For example, when supplying a plurality of drive current which is a combination of alternating current and a direct current of a frequency to the discharge lamp 90, in the initial stage, the protrusions 552p are formed. However, as the discharge lamp 90 deteriorates due to long-term use, the protrusion 552p is hardly formed gradually, and a stable electrode shape may not be maintained.
Claims (13)
前記放電灯駆動部を制御する制御部と、
前記放電灯の電極間電圧を検出する電圧検出部と、
を備え、
前記制御部は、
前記放電灯に直流電流と交流電流とを含む前記駆動電流を供給する第１制御および第２制御を実行する第１放電灯駆動と、
前記放電灯に直流電流と交流電流とを含む前記駆動電流を供給する第３制御および第４制御を実行する第２放電灯駆動と、
を実行可能であり、
前記制御部は、
前記第１放電灯駆動において、所定の設定タイミングにおいて前記電極間電圧が第１閾値電圧以下である場合、前記第１制御を実行し、前記所定の設定タイミングにおいて前記電極間電圧が前記第１閾値電圧よりも大きい場合、前記第２制御を実行し、
前記第２放電灯駆動において、所定の設定タイミングにおいて前記電極間電圧が前記第１閾値電圧よりも大きい第２閾値電圧以下である場合、前記第３制御を実行し、前記所定の設定タイミングにおいて前記電極間電圧が前記第２閾値電圧よりも大きい場合、前記第４制御を実行し、
前記第２制御における前記直流電流の割合は、前記第１制御における前記直流電流の割合よりも大きく、
前記第４制御における前記直流電流の割合は、前記第３制御における前記直流電流の割合よりも大きく、かつ、前記第２制御における前記直流電流の割合よりも大きく、
前記制御部は、前記第１放電灯駆動の前記第２制御において、前記電極間電圧が前記第１閾値電圧以上の第１移行電圧よりも大きく、かつ、前記第２制御の連続実行時間が第１移行時間以上である場合、前記第１放電灯駆動から前記第２放電灯駆動に移行することを特徴とする放電灯駆動装置。 A discharge lamp driving section for supplying a driving current to the discharge lamp;
A control unit for controlling the discharge lamp driving unit;
A voltage detector for detecting a voltage between the electrodes of the discharge lamp;
With
The controller is
A first discharge lamp drive for performing a first control and a second control for supplying the drive current including a direct current and an alternating current to the discharge lamp;
A second discharge lamp drive for executing a third control and a fourth control for supplying the drive current including a direct current and an alternating current to the discharge lamp;
Is possible and
The controller is
In the first discharge lamp driving, when the interelectrode voltage is equal to or lower than a first threshold voltage at a predetermined setting timing, the first control is executed, and the interelectrode voltage is set to the first threshold voltage at the predetermined setting timing. If greater than the voltage, execute the second control;
In the second discharge lamp driving, when the interelectrode voltage is equal to or lower than a second threshold voltage larger than the first threshold voltage at a predetermined setting timing, the third control is executed, and at the predetermined setting timing, When the interelectrode voltage is larger than the second threshold voltage, the fourth control is executed,
The ratio of the direct current in the second control is greater than the ratio of the direct current in the first control,
The ratio of the direct current in the fourth control is greater than the ratio of the direct current in the third control and greater than the ratio of the direct current in the second control,
In the second control of the first discharge lamp drive, the controller is configured such that the voltage between the electrodes is greater than a first transition voltage equal to or higher than the first threshold voltage, and the continuous execution time of the second control is the first. The discharge lamp driving device that shifts from the first discharge lamp driving to the second discharge lamp driving when the time is one transition time or longer.
前記第２制御において前記直流電流が供給される直流期間の合計長さは、前記第１制御において前記直流電流が供給される直流期間の合計長さよりも大きく、The total length of the direct current period in which the direct current is supplied in the second control is greater than the total length of the direct current period in which the direct current is supplied in the first control,
前記第４制御において前記直流電流が供給される直流期間の合計長さは、前記第３制御において前記直流電流が供給される直流期間の合計長さよりも大きく、かつ、前記第２制御において前記直流電流が供給される直流期間の合計長さよりも大きい、放電灯駆動装置。The total length of the direct current period in which the direct current is supplied in the fourth control is greater than the total length of the direct current period in which the direct current is supplied in the third control, and the direct current period in the second control. A discharge lamp driving device that is larger than a total length of a direct current period in which a current is supplied.
前記第１移行電圧は、前記第１閾値電圧よりも大きい、放電灯駆動装置。 The discharge lamp driving device according to claim 1 or 2 ,
The discharge lamp driving device, wherein the first transition voltage is greater than the first threshold voltage.
前記第１移行電圧は、前記第２閾値電圧よりも小さい、放電灯駆動装置。 The discharge lamp driving device according to any one of claims 1 to 3 ,
The discharge lamp driving device, wherein the first transition voltage is smaller than the second threshold voltage.
前記第３制御における前記直流電流の割合は、前記第１制御における前記直流電流の割合と略同等である、放電灯駆動装置。 It is a discharge lamp drive device as described in any one of Claim 1 to 4 , Comprising:
The ratio of the direct current in the third control is substantially the same as the ratio of the direct current in the first control.
前記所定の設定タイミングは、所定時間ごとに設けられる、放電灯駆動装置。 The discharge lamp driving device according to any one of claims 1 to 5 ,
The discharge lamp driving device, wherein the predetermined setting timing is provided every predetermined time.
前記第１制御における前記交流電流および前記第３制御における前記交流電流は、それぞれ、第１周波数を有する第１交流電流と、前記第１周波数よりも低い第２周波数を有する第２交流電流と、を含み、
前記制御部は、
前記第１制御において、前記第１閾値電圧に基づいて、前記第１交流電流の割合と、前記第２交流電流の割合と、を調整し、
前記第３制御において、前記第２閾値電圧に基づいて、前記第１交流電流の割合と、前記第２交流電流の割合と、を調整する、放電灯駆動装置。 The discharge lamp driving device according to any one of claims 1 to 6 ,
The alternating current in the first control and the alternating current in the third control are respectively a first alternating current having a first frequency and a second alternating current having a second frequency lower than the first frequency; Including
The controller is
In the first control, the ratio of the first alternating current and the ratio of the second alternating current are adjusted based on the first threshold voltage,
In the third control, a discharge lamp driving device that adjusts the ratio of the first alternating current and the ratio of the second alternating current based on the second threshold voltage.
前記制御部は、
前記第１制御において、前記第１閾値電圧が所定値以下である場合、前記第２交流電流の割合を前記第１交流電流の割合よりも大きくし、前記第１閾値電圧が所定値よりも大きい場合、前記第１交流電流の割合を前記第２交流電流の割合よりも大きくし、
前記第３制御において、前記第２閾値電圧が所定値以下である場合、前記第２交流電流の割合を前記第１交流電流の割合よりも大きくし、前記第２閾値電圧が所定値よりも大きい場合、前記第１交流電流の割合を前記第２交流電流の割合よりも大きくする、放電灯駆動装置。 The discharge lamp driving device according to claim 7 ,
The controller is
In the first control, when the first threshold voltage is equal to or lower than a predetermined value, the ratio of the second alternating current is made larger than the ratio of the first alternating current, and the first threshold voltage is larger than the predetermined value. The ratio of the first alternating current is greater than the ratio of the second alternating current;
In the third control, when the second threshold voltage is equal to or lower than a predetermined value, the ratio of the second alternating current is made larger than the ratio of the first alternating current, and the second threshold voltage is larger than the predetermined value. In this case, the discharge lamp driving device makes the ratio of the first alternating current larger than the ratio of the second alternating current.
前記制御部は、前記放電灯に直流電流と交流電流とを含む前記駆動電流を供給する第５制御および第６制御を実行する第３放電灯駆動を実行可能であり、
前記制御部は、
前記第３放電灯駆動において、所定の設定タイミングにおいて前記電極間電圧が前記第２閾値電圧よりも大きい第３閾値電圧以下である場合、前記第５制御を実行し、前記所定の設定タイミングにおいて前記電極間電圧が前記第３閾値電圧よりも大きい場合、前記第６制御を実行し、
前記第６制御における前記直流電流の割合は、前記第５制御における前記直流電流の割合よりも大きく、かつ、前記第４制御における前記直流電流の割合よりも大きく、
前記制御部は、前記第２放電灯駆動の前記第４制御において、前記電極間電圧が前記第３閾値電圧以上の第２移行電圧よりも大きく、かつ、前記第４制御の連続実行時間が第２移行時間以上である場合、前記第２放電灯駆動から前記第３放電灯駆動に移行する、放電灯駆動装置。 The discharge lamp driving device according to any one of claims 1 to 8 ,
The control unit is capable of executing a third discharge lamp drive for executing a fifth control and a sixth control for supplying the drive current including a direct current and an alternating current to the discharge lamp,
The controller is
In the third discharge lamp driving, when the inter-electrode voltage is equal to or lower than a third threshold voltage that is larger than the second threshold voltage at a predetermined setting timing, the fifth control is executed, and at the predetermined setting timing, When the interelectrode voltage is larger than the third threshold voltage, the sixth control is executed,
The ratio of the direct current in the sixth control is greater than the ratio of the direct current in the fifth control and greater than the ratio of the direct current in the fourth control,
In the fourth control of the second discharge lamp drive, the control unit is configured such that the voltage between the electrodes is larger than a second transition voltage equal to or higher than the third threshold voltage, and the continuous execution time of the fourth control is the first. 2. A discharge lamp driving device that shifts from the second discharge lamp driving to the third discharge lamp driving when it is equal to or longer than two transition times.
前記第６制御において前記直流電流が供給される直流期間の合計長さは、前記第５制御において前記直流電流が供給される直流期間の合計長さよりも大きく、かつ、前記第４制御において前記直流電流が供給される直流期間の合計長さよりも大きい、放電灯駆動装置。The total length of the direct current period in which the direct current is supplied in the sixth control is greater than the total length of the direct current period in which the direct current is supplied in the fifth control, and the direct current period in the fourth control. A discharge lamp driving device that is larger than a total length of a direct current period in which a current is supplied.
請求項１から１０のいずれか一項に記載の放電灯駆動装置と、
を備えることを特徴とする光源装置。 The discharge lamp emitting light;
The discharge lamp driving device according to any one of claims 1 to 10 ,
A light source device comprising:
前記光源装置から射出される光を映像信号に応じて変調する光変調素子と、
前記光変調素子により変調された光を投射する投射光学系と、
を備えることを特徴とするプロジェクター。 The light source device according to claim 11 ;
A light modulation element that modulates light emitted from the light source device according to a video signal;
A projection optical system for projecting light modulated by the light modulation element;
A projector comprising:
前記放電灯の電極間電圧を検出するステップと、
前記放電灯に直流電流と交流電流とを含む前記駆動電流を供給する第１制御および第２制御を実行する第１放電灯駆動を実行するステップと、
前記放電灯に直流電流と交流電流とを含む前記駆動電流を供給する第３制御および第４制御を実行する第２放電灯駆動を実行するステップと、
を含み、
前記第１放電灯駆動においては、所定の設定タイミングにおいて前記電極間電圧が第１閾値電圧以下である場合、前記第１制御を実行し、前記所定の設定タイミングにおいて前記電極間電圧が前記第１閾値電圧よりも大きい場合、前記第２制御を実行し、
前記第２放電灯駆動においては、所定の設定タイミングにおいて前記電極間電圧が前記第１閾値電圧よりも大きい第２閾値電圧以下である場合、前記第３制御を実行し、前記所定の設定タイミングにおいて前記電極間電圧が前記第２閾値電圧よりも大きい場合、前記第４制御を実行し、
前記第２制御における前記直流電流の割合は、前記第１制御における前記直流電流の割合よりも大きく、
前記第４制御における前記直流電流の割合は、前記第３制御における前記直流電流の割合よりも大きく、かつ、前記第２制御における前記直流電流の割合よりも大きく、
前記第１放電灯駆動の前記第２制御において、前記電極間電圧が前記第１閾値電圧以上の第１移行電圧よりも大きく、かつ、前記第２制御の連続実行時間が第１移行時間以上である場合、前記第１放電灯駆動から前記第２放電灯駆動に移行することを特徴とする放電灯駆動方法。 A discharge lamp driving method for driving the discharge lamp by supplying a driving current to the discharge lamp,
Detecting a voltage between electrodes of the discharge lamp;
Performing a first discharge lamp drive for performing a first control and a second control for supplying the drive current including a direct current and an alternating current to the discharge lamp;
Performing a second discharge lamp drive for performing a third control and a fourth control for supplying the drive current including a direct current and an alternating current to the discharge lamp;
Including
In the first discharge lamp driving, when the inter-electrode voltage is equal to or lower than a first threshold voltage at a predetermined setting timing, the first control is executed, and the inter-electrode voltage is set to the first voltage at the predetermined setting timing. When the voltage is larger than the threshold voltage, the second control is executed,
In the second discharge lamp driving, when the voltage between the electrodes is equal to or lower than a second threshold voltage larger than the first threshold voltage at a predetermined setting timing, the third control is executed, and at the predetermined setting timing If the inter-electrode voltage is greater than the second threshold voltage, execute the fourth control;
The ratio of the direct current in the second control is greater than the ratio of the direct current in the first control,
The ratio of the direct current in the fourth control is greater than the ratio of the direct current in the third control and greater than the ratio of the direct current in the second control,
In the second control of the first discharge lamp drive, the interelectrode voltage is greater than a first transition voltage that is equal to or higher than the first threshold voltage, and the continuous execution time of the second control is equal to or longer than the first transition time. In some cases, the discharge lamp driving method is characterized in that the first discharge lamp driving is shifted to the second discharge lamp driving.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015045581A JP6477049B2 (en) | 2015-03-09 | 2015-03-09 | Discharge lamp driving device, light source device, projector, and discharge lamp driving method |
| US15/059,892 US10237521B2 (en) | 2015-03-09 | 2016-03-03 | Discharge lamp driving device, projector, and discharge lamp driving method |
| EP16158722.5A EP3068193A1 (en) | 2015-03-09 | 2016-03-04 | Discharge-lamp driving device |
| CN201610128547.9A CN105960084B (en) | 2015-03-09 | 2016-03-08 | Discharge lamp driven apparatus, light supply apparatus, projector and electric discharge lamp driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015045581A JP6477049B2 (en) | 2015-03-09 | 2015-03-09 | Discharge lamp driving device, light source device, projector, and discharge lamp driving method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2016167347A JP2016167347A (en) | 2016-09-15 |
| JP2016167347A5 true JP2016167347A5 (en) | 2018-02-08 |
| JP6477049B2 JP6477049B2 (en) | 2019-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015045581A Expired - Fee Related JP6477049B2 (en) | 2015-03-09 | 2015-03-09 | Discharge lamp driving device, light source device, projector, and discharge lamp driving method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6477049B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10295893B2 (en) | 2016-03-23 | 2019-05-21 | Seiko Epson Corporation | Discharge lamp driving device, light source device, projector, and discharge lamp driving method |
| CN115244100A (en) | 2020-02-21 | 2022-10-25 | 陶氏东丽株式会社 | Solvent-free photocurable liquid composition, cured product thereof, optical filler comprising same, and display device comprising layer formed from cured product thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4416125B2 (en) * | 2004-03-18 | 2010-02-17 | ウシオ電機株式会社 | High pressure discharge lamp lighting device |
| JP5725218B2 (en) * | 2008-08-07 | 2015-05-27 | セイコーエプソン株式会社 | Discharge lamp driving device and driving method, light source device, and image display device |
| JP5724246B2 (en) * | 2010-08-20 | 2015-05-27 | セイコーエプソン株式会社 | Discharge lamp lighting device, projector, and discharge lamp driving method |
-
2015
- 2015-03-09 JP JP2015045581A patent/JP6477049B2/en not_active Expired - Fee Related
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