Method for operating a discharge lamp and projection arrangement

    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

    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.

    DLP projector and method for projecting at least one image onto a projection surface

    公开(公告)号:US09699875B2

    公开(公告)日:2017-07-04

    申请号:US14367249

    申请日:2012-12-19

    Applicant: OSRAM GmbH

    Abstract: Various embodiments relates to a DLP (digital light processing) projector for projecting at least one image on a projection surface. A discharge lamp is driven by a current waveform having at least one first region, to which a first frequency is assigned, and a second region, to which a second frequency is assigned, wherein the first region is established by a first commutation and a following second commutation, wherein the second region is established by the region between the second commutation and a following first commutation, wherein further commutations can occur within the second region, wherein a modulation factor is defined by the ratio of second frequency to first frequency, wherein the modulation factor is at least 3. A method for projecting at least one image is also disclosed.

    CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE DISCHARGE LAMP
    15.
    发明申请
    CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE DISCHARGE LAMP 有权
    至少一个放电灯操作的电路布置和方法

    公开(公告)号:US20150077018A1

    公开(公告)日:2015-03-19

    申请号:US14383143

    申请日:2013-02-28

    Applicant: OSRAM GmbH

    CPC classification number: H05B41/28 H05B41/2887 H05B41/2928 H05B41/36

    Abstract: Various embodiments may relate to a circuit arrangement for operating at least one discharge lamp having a commutation device and a control device which is coupled to the commutation device. A first measuring device is used to determine in each case first measurement values, which represent a measure of the magnitude of electrode peaks of the discharge lamp, within a test operating phase in which the first electrode and the second electrode are supplied with energy in an asymmetrical manner. A second measuring device is used to determine a second measurement value which is correlated with the current through the discharge lamp at least during the test operating phase. The control device is designed to actuate the commutation device at least as a function of the determined first measurement values and second measurement values. Various embodiments further relate to a corresponding method for operating at least one discharge lamp.

    Abstract translation: 各种实施例可以涉及用于操作具有换向装置的至少一个放电灯和耦合到换向装置的控制装置的电路装置。 第一测量装置用于在每种情况下确定在第一电极和第二电极被供应能量的测试操作阶段内的第一测量值,其表示放电灯的电极峰值的量度的量度 不对称的方式。 第二测量装置用于至少在测试操作阶段期间确定与通过放电灯的电流相关的第二测量值。 控制装置被设计成至少根据确定的第一测量值和第二测量值来致动换向装置。 各种实施例还涉及用于操作至少一个放电灯的相应方法。

    DLP PROJECTOR AND METHOD FOR PROJECTING AT LEAST ONE IMAGE ONTO A PROJECTION SURFACE
    16.
    发明申请
    DLP PROJECTOR AND METHOD FOR PROJECTING AT LEAST ONE IMAGE ONTO A PROJECTION SURFACE 有权
    DLP投影机和投影至少一个图像到投影面的方法

    公开(公告)号:US20140340656A1

    公开(公告)日:2014-11-20

    申请号:US14367249

    申请日:2012-12-19

    Applicant: OSRAM GmbH

    Abstract: Various embodiments relates to a DLP (digital light processing) projector for projecting at least one image on a projection surface. A discharge lamp is driven by a current waveform having at least one first region, to which a first frequency is assigned, and a second region, to which a second frequency is assigned, wherein the first region is established by a first commutation and a following second commutation, wherein the second region is established by the region between the second commutation and a following first commutation, wherein further commutations can occur within the second region, wherein a modulation factor is defined by the ratio of second frequency to first frequency, wherein the modulation factor is at least 3. A method for projecting at least one image is also disclosed.

    Abstract translation: 各种实施例涉及用于在投影表面上投影至少一个图像的DLP(数字光处理)投影仪。 放电灯由具有至少一个分配有第一频率的第一区域和分配有第二频率的第二区域的电流波形驱动,其中第一区域由第一次换向和下一个 第二换向,其中所述第二区域由所述第二换向和随后的第一换向之间的区域建立,其中可在所述第二区域内进一步换向,其中调制因子由所述第二频率与所述第一频率的比率定义,其中, 调制因数至少为3.还公开了一种用于投影至少一个图像的方法。

Patent Agency Ranking