公开(公告)号：US10073335B2

公开(公告)日：2018-09-11

申请号：US15517176

申请日：2015-09-29

Applicant: OSRAM GmbH

Inventor： Marc Czichy ,  Michael Heise ,  Markus Baier ,  Norbert Magg ,  Daniel Sixtensson

IPC: G03B21/00 ,  G03B21/20 ,  H05B41/36 ,  H04N9/31 ,  H05B41/292

CPC classification number: G03B21/206 ,  G03B21/005 ,  G03B21/006 ,  G03B21/2026 ,  H04N9/3155 ,  H05B41/2888 ,  H05B41/2928 ,  H05B41/36 ,  Y02B20/202

Abstract: A projection device for projecting at least one image onto a projection surface is provided. According to the present disclosure, a control device of the projection device is designed, on the basis of an evaluation of at least one measured value of a measuring device of the projection device determined during a drive of a discharge lamp of the projection device with a current waveform to be checked, to check the current waveform in respect of its suitability for minimizing an electrode burn-back of a first electrode and a second electrode, and in the case of a positive check result, to retain the checked current waveform, and in the case of a negative check result, depending on a checked commutation vector characterizing the checked current waveform, to create, by means of a specifiable algorithm, a modified commutation vector that characterizes a modified current waveform.

公开(公告)号：US10362281B2

公开(公告)日：2019-07-23

申请号：US15289219

申请日：2016-10-10

Applicant: OSRAM GmbH

Inventor： Michael Heise ,  Marc Czichy ,  Bastian Dobler

IPC: H04N9/31

Abstract: A projection apparatus includes a discharge lamp; a control apparatus for controlling a discharge current through the lamp. The apparatus is designed in a first drive mode, to control the discharge current having an amplitude profile; in a second drive mode, to control the discharge current in accordance with the amplitude profile; and to change between the first mode and the second mode. The time difference between two changes is given by a first time interval, and the time difference between the change from the first mode to the second mode and a next instance of leaving the second mode is given by a second time interval. The apparatus further includes a control device to determine a first manipulated variable depending on a control deviation determined by the difference between a target voltage value and a measured voltage value, and to determine the first and/or the second time interval therefrom.

公开(公告)号：US09436072B2

公开(公告)日：2016-09-06

申请号：US14474202

申请日：2014-09-01

Applicant: OSRAM GmbH

Inventor： Marc Czichy

IPC: H05B37/02 ,  G03B21/20 ,  H04N9/31 ,  H05B41/288 ,  H05B41/392 ,  G02B26/00

CPC classification number: G03B21/2053 ,  G02B26/008 ,  H04N9/3111 ,  H05B41/2883 ,  H05B41/3921

Abstract: Various embodiments provide a method for determining a wave form of a lamp current for operating a discharge lamp of a projection arrangement having a color wheel and a ballast, such that a polarity of the electrodes is commutated in accordance with a commutation scheme of the wave form. The method involves providing a wave form having a commutation scheme and checking whether operation of the discharge lamp satisfies one criterion relating to a lifetime of the discharge lamp or a flicker amplitude of the projection arrangement. If the criterion checked is satisfied, checking whether operation of the discharge lamp satisfies the other of the two criteria is carried out. If at least these two criteria are satisfied, the wave form is stored in a memory of the projection arrangement and provided as the predefinable wave form at the ballast for the discharge lamp.

Abstract translation: 各种实施例提供了一种用于确定用于操作具有色轮和镇流器的投影装置的放电灯的灯电流的波形的方法，使得根据波形的换向方案将电极的极性换向 。 该方法包括提供具有换向方案的波形，并且检查放电灯的操作是否满足与放电灯的寿命或投影布置的闪烁幅度相关的一个标准。 如果满足检查条件，则检查放电灯的工作是否满足两个标准中的另一个。 如果至少满足这两个标准，则波形被存储在投影装置的存储器中，并且作为用于放电灯的镇流器的预定义波形提供。

公开(公告)号：US20170299954A1

公开(公告)日：2017-10-19

申请号：US15517176

申请日：2015-09-29

Applicant: OSRAM GmbH

Inventor： Marc Czichy ,  Michael Heise ,  Markus Baier ,  Norbert Magg ,  Daniel Sixtensson

IPC: G03B21/20 ,  G03B21/00 ,  H05B41/36

CPC classification number: G03B21/206 ,  G03B21/005 ,  G03B21/006 ,  G03B21/2026 ,  H04N9/3155 ,  H05B41/2888 ,  H05B41/2928 ,  H05B41/36

Abstract: A projection device for projecting at least one image onto a projection surface is provided. According to the present disclosure, a control device of the projection device is designed, on the basis of an evaluation of at least one measured value of a measuring device of the projection device determined during a drive of a discharge lamp of the projection device with a current waveform to be checked, to check the current waveform in respect of its suitability for minimizing an electrode burn-back of a first electrode and a second electrode, and in the case of a positive check result, to retain the checked current waveform, and in the case of a negative check result, depending on a checked commutation vector characterizing the checked current waveform, to create, by means of a specifiable algorithm, a modified commutation vector that characterizes a modified current waveform.

公开(公告)号：US09788401B2

公开(公告)日：2017-10-10

申请号：US14532022

申请日：2014-11-04

Applicant: OSRAM GmbH

Inventor： Marc Czichy ,  Norbert Magg

IPC: H05B41/16 ,  H05B41/392 ,  H05B41/292 ,  H05B41/38

CPC classification number: H05B41/16 ,  H05B41/2928 ,  H05B41/38 ,  H05B41/3928

Abstract: Various embodiments provide a projection arrangement. The projection arrangement may include a discharge lamp; and a ballast for the discharge lamp. The ballast is designed to provide, during operation of the projection arrangement, a lamp current in the form of alternating current and having an average frequency and a preset waveform, which has a preset commutation scheme, to the discharge lamp. The preset commutation scheme is preset by a preset time sequence of commutations of the lamp current. The ballast is designed to provide the lamp current in such a way that the preset commutation scheme of the lamp current is deviated from repeatedly with at least one preset intervening time period by at least one DC phase with a preset time duration.

公开(公告)号：US20170104966A1

公开(公告)日：2017-04-13

申请号：US15289219

申请日：2016-10-10

Applicant: OSRAM GmbH

Inventor： Michael Heise ,  Marc Czichy ,  Bastian Dobler

IPC: H04N9/31

CPC classification number: H04N9/3155 ,  H04N9/3114 ,  H04N9/3182

Abstract: A projection apparatus includes a discharge lamp; a control apparatus for controlling a discharge current through the lamp. The apparatus is designed in a first drive mode, to control the discharge current having an amplitude profile; in a second drive mode, to control the discharge current in accordance with the amplitude profile; and to change between the first mode and the second mode. The time difference between two changes is given by a first time interval, and the time difference between the change from the first mode to the second mode and a next instance of leaving the second mode is given by a second time interval. The apparatus further includes a control device to determine a first manipulated variable depending on a control deviation determined by the difference between a target voltage value and a measured voltage value, and to determine the first and/or the second time interval therefrom.

公开(公告)号：US20150131063A1

公开(公告)日：2015-05-14

申请号：US14532022

申请日：2014-11-04

Applicant: OSRAM GmbH

Inventor： Marc Czichy ,  Norbert Magg

IPC: G03B21/20 ,  H05B41/16

CPC classification number: H05B41/16 ,  H05B41/2928 ,  H05B41/38 ,  H05B41/3928

Abstract: Various embodiments provide a projection arrangement. The projection arrangement may include a discharge lamp; and a ballast for the discharge lamp. The ballast is designed to provide, during operation of the projection arrangement, a lamp current in the form of alternating current and having an average frequency and a preset waveform, which has a preset commutation scheme, to the discharge lamp. The preset commutation scheme is preset by a preset time sequence of commutations of the lamp current. The ballast is designed to provide the lamp current in such a way that the preset commutation scheme of the lamp current is deviated from repeatedly with at least one preset intervening time period by at least one DC phase with a preset time duration.

Abstract translation: 各种实施例提供一种投影装置。 投影装置可以包括放电灯; 和放电灯的镇流器。 镇流器被设计成在投影装置的操作期间提供交流电的形式的灯电流，并且具有平均频率和具有预设换向方案的预设波形到放电灯。 预设换向方案由灯电流的预定时间顺序预设。 镇流器被设计成以这样的方式提供灯电流，使得灯电流的预设换向方案在至少一个预设的中间时间段内具有预设的持续时间的至少一个DC相位而重复地偏离。

公开(公告)号：US20150077721A1

公开(公告)日：2015-03-19

申请号：US14474202

申请日：2014-09-01

Applicant: OSRAM GmbH

Inventor： Marc Czichy

IPC: G03B21/20 ,  H04N9/31

CPC classification number: G03B21/2053 ,  G02B26/008 ,  H04N9/3111 ,  H05B41/2883 ,  H05B41/3921

Abstract: Various embodiments provide a method for determining a wave form of a lamp current for operating a discharge lamp of a projection arrangement having a color wheel and a ballast, such that a polarity of the electrodes is commutated in accordance with a commutation scheme of the wave form. The method involves providing a wave form having a commutation scheme and checking whether operation of the discharge lamp satisfies one criterion relating to a lifetime of the discharge lamp or a flicker amplitude of the projection arrangement. If the criterion checked is satisfied, checking whether operation of the discharge lamp satisfies the other of the two criteria is carried out. If at least these two criteria are satisfied, the wave form is stored in a memory of the projection arrangement and provided as the predefinable wave form at the ballast for the discharge lamp.

Abstract translation: 各种实施例提供了一种用于确定用于操作具有色轮和镇流器的投影装置的放电灯的灯电流的波形的方法，使得根据波形的换向方案将电极的极性换向 。 该方法包括提供具有换向方案的波形，并且检查放电灯的操作是否满足与放电灯的寿命或投影布置的闪烁幅度相关的一个标准。 如果满足检查条件，则检查放电灯的工作是否满足两个标准中的另一个。 如果至少满足这两个标准，则波形被存储在投影装置的存储器中，并且作为用于放电灯的镇流器的预定义波形提供。