JP2014160585A5 - - Google Patents
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- JP2014160585A5 JP2014160585A5 JP2013030704A JP2013030704A JP2014160585A5 JP 2014160585 A5 JP2014160585 A5 JP 2014160585A5 JP 2013030704 A JP2013030704 A JP 2013030704A JP 2013030704 A JP2013030704 A JP 2013030704A JP 2014160585 A5 JP2014160585 A5 JP 2014160585A5
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- discharge lamp
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- 230000000051 modifying Effects 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 3
- 230000001186 cumulative Effects 0.000 claims 1
- 230000003287 optical Effects 0.000 claims 1
Claims (11)
前記駆動回路を制御する制御手段と、
前記放電灯の電極間電圧を検出する検出部と、を備え、
前記制御手段は、前記放電灯の点灯後であって定常駆動区間前の立ち上げ駆動区間において、検出された前記電極間電圧に基づく前記電極間電圧の変化量に応じて前記駆動電流を変化させることを特徴とする放電灯駆動装置。 A driving circuit for supplying a driving current to the discharge lamp to light the discharge lamp ;
Control means for controlling the drive circuit;
A detector for detecting a voltage between the electrodes of the discharge lamp ,
The control means changes the drive current according to the amount of change in the interelectrode voltage based on the detected interelectrode voltage in the startup drive section after the discharge lamp is lit and before the steady drive section. the discharge lamp driving apparatus characterized by that.
前記制御手段は、前記電極間電圧の変化量が所定の閾値よりも大きい場合、前記駆動電流を低下させることを特徴とする放電灯駆動装置。 The discharge lamp driving device according to claim 1 ,
Wherein if the amount of change in the inter-electrode voltage is greater than a predetermined threshold value, the discharge lamp driving apparatus characterized by reducing the drive current.
前記制御手段は、The control means includes
前記立ち上げ区間において、前記放電灯の点灯開始から前記立ち上げ区間の前の始動区間において前記放電灯に供給される駆動電流よりも大きい設定電流を供給して、前記検出部により前記電極間電圧を検出し、In the start-up section, a setting current larger than the drive current supplied to the discharge lamp in the start-up section before the start-up section from the start of lighting of the discharge lamp is supplied, and the interelectrode voltage is supplied by the detection unit. Detect
前記電極間電圧の変化量が前記所定の閾値よりも大きい場合、前記設定電流の電流値以下の第１駆動電流を前記放電灯に供給することを特徴とする放電灯駆動装置。A discharge lamp drive device that supplies a first drive current equal to or less than a current value of the set current to the discharge lamp when a change amount of the interelectrode voltage is larger than the predetermined threshold.
前記第１駆動電流は、前記定常駆動区間において前記放電灯に供給される駆動電流の電流値以上であることを特徴とする放電灯駆動装置。The discharge lamp drive device according to claim 1, wherein the first drive current is equal to or greater than a current value of a drive current supplied to the discharge lamp in the steady drive section.
前記制御手段は、前記電極間電圧の変化量が所定の閾値以下の場合、前記駆動電流を増大させることを特徴とする放電灯駆動装置。 The discharge lamp driving device according to any one of claims 1 to 4 ,
Wherein if the amount of change in the inter-electrode voltage is below a predetermined threshold value, the discharge lamp driving apparatus characterized by increasing the drive current.
前記制御手段は、The control means includes
前記立ち上げ区間において、前記放電灯の点灯開始から前記立ち上げ区間の前の始動区間において前記放電灯に供給される駆動電流よりも大きい設定電流を供給して、前記検出部により前記電極間電圧を検出し、In the start-up section, a setting current larger than the drive current supplied to the discharge lamp in the start-up section before the start-up section from the start of lighting of the discharge lamp is supplied, and the interelectrode voltage is supplied by the detection unit. Detect
前記電極間電圧の変化量が前記所定の閾値以下の場合、前記設定電流の電流値以上の第２駆動電流を前記放電灯に供給することを特徴とする放電灯駆動装置。When the amount of change in the interelectrode voltage is less than or equal to the predetermined threshold value, the discharge lamp driving device supplies a second drive current equal to or greater than the current value of the set current to the discharge lamp.
前記第２駆動電流は、前記定常駆動区間において前記放電灯に供給される駆動電流の電流値より大きいことを特徴とする放電灯駆動装置。The discharge lamp driving device according to claim 1, wherein the second driving current is larger than a current value of a driving current supplied to the discharge lamp in the steady driving section.
前記制御手段は、前記電極間電圧の変化量が前記所定の閾値以下であり、かつ前記放電灯の累積点灯時間が所定時間よりも長い場合、前記設定電流の電流値以上であり前記第２駆動電流の電流値よりも小さい第３駆動電流を前記放電灯に供給することを特徴とする放電灯駆動装置。 The discharge lamp driving device according to claim 6 or 7 ,
When the change amount of the voltage between the electrodes is equal to or less than the predetermined threshold and the cumulative lighting time of the discharge lamp is longer than a predetermined time, the control means is equal to or greater than the current value of the set current and the second drive A discharge lamp driving device that supplies a third driving current smaller than a current value of the current to the discharge lamp.
前記定常駆動区間において前記検出部により検出された電極間電圧を記憶する記憶手段を備え、
前記制御手段は、前記電極間電圧の変化量が前記所定の閾値以下であり、かつ前記記憶手段に記憶されている前回点灯時の前記定常駆動区間における電極間電圧が所定電圧よりも大きい場合、前記設定電流の電流値以上であり前記第２駆動電流の電流値よりも小さい第３駆動電流を前記放電灯に供給することを特徴とする放電灯駆動装置。 The discharge lamp driving device according to claim 6 or 7 ,
Comprising storage means for storing the detected interelectrode voltage by Oite the detection unit in the steady driving period,
The control means, when the amount of change in the voltage between the electrodes is less than or equal to the predetermined threshold, and the voltage between the electrodes in the steady driving section at the time of previous lighting stored in the storage means is greater than a predetermined voltage , A discharge lamp driving device that supplies a third driving current that is equal to or greater than a current value of the set current and smaller than a current value of the second driving current to the discharge lamp.
前記請求項１から９のいずれかに記載の放電灯駆動装置と、
前記放電灯からの光を画像信号に基づいて変調する光変調装置と、
前記光変調装置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。 And the electric light release,
The discharge lamp driving device according to any one of claims 1 to 9 ,
A light modulation device that modulates light from the discharge lamp based on an image signal;
Projector, characterized in that Ru and a projection optical system for projecting the light modulated by the light modulation device.
前記放電灯の点灯後であって定常駆動区間前の立ち上げ駆動区間において、前記放電灯の電極間電圧を検出するステップと、
前記立ち上げ駆動区間において、検出された前記電極間電圧に基づく前記電極間電圧の変化に応じて前記駆動電流を変化させるステップと、
を備えることを特徴とする放電灯駆動方法。 A driving method of a discharge lamp for turning on the discharge lamp by supplying a driving current to the discharge lamp ,
Detecting the voltage between the electrodes of the discharge lamp in the startup drive section after the discharge lamp is lit and before the steady drive section;
Changing the drive current according to a change in the interelectrode voltage based on the detected interelectrode voltage in the startup drive section; and
The discharge lamp driving method, characterized in that it comprises a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013030704A JP6127567B2 (en) | 2013-02-20 | 2013-02-20 | Discharge lamp driving device, projector, and discharge lamp driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013030704A JP6127567B2 (en) | 2013-02-20 | 2013-02-20 | Discharge lamp driving device, projector, and discharge lamp driving method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014160585A JP2014160585A (en) | 2014-09-04 |
| JP2014160585A5 true JP2014160585A5 (en) | 2016-01-28 |
| JP6127567B2 JP6127567B2 (en) | 2017-05-17 |
Family
ID=51612144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013030704A Active JP6127567B2 (en) | 2013-02-20 | 2013-02-20 | Discharge lamp driving device, projector, and discharge lamp driving method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6127567B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4123075B2 (en) * | 2003-06-27 | 2008-07-23 | 松下電工株式会社 | Discharge lamp lighting device |
| JP2005019262A (en) * | 2003-06-27 | 2005-01-20 | Ushio Inc | Short arc type discharge lamp lighting device |
| JP4692675B2 (en) * | 2009-12-25 | 2011-06-01 | セイコーエプソン株式会社 | Discharge lamp lighting device and projector |
-
2013
- 2013-02-20 JP JP2013030704A patent/JP6127567B2/en active Active
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