WO2018018975A1 - 投影装置、光源系统及其控制电流的方法 - Google Patents

投影装置、光源系统及其控制电流的方法 Download PDF

Info

Publication number
WO2018018975A1
WO2018018975A1 PCT/CN2017/082483 CN2017082483W WO2018018975A1 WO 2018018975 A1 WO2018018975 A1 WO 2018018975A1 CN 2017082483 W CN2017082483 W CN 2017082483W WO 2018018975 A1 WO2018018975 A1 WO 2018018975A1
Authority
WO
WIPO (PCT)
Prior art keywords
partition
light source
wavelength conversion
conversion device
optical path
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/082483
Other languages
English (en)
French (fr)
Inventor
黄国生
李屹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Appotroincs Corp Ltd
Original Assignee
Appotroincs Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Appotroincs Corp Ltd filed Critical Appotroincs Corp Ltd
Publication of WO2018018975A1 publication Critical patent/WO2018018975A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B44/00—Circuit arrangements for operating electroluminescent light sources

Definitions

  • the present invention relates to the field of light source control technologies, and more particularly to a projection device, a light source system, and a method of controlling current thereof.
  • mercury lamps are generally used as illumination sources because of their low price and high brightness.
  • the choice of projector light sources tends to be diversified, and the light source is one of them.
  • the advantage of the light source as the light source of the projector is that the energy consumption is low, but at the same time, the price is high and the brightness is reduced, which is the soft rib of the light source. Therefore, it is generally impossible to produce different colors with laser diodes of different colors, which is the mainstream of the market.
  • a solid color laser diode is usually used as the light source of the projector.
  • the color effects obtained by the above-mentioned light sources are sometimes not ideal, so it is necessary to adjust optical indexes such as color and brightness to optimize color effects, such as increasing the ratio of brightness of one color or reducing the ratio of brightness of another color.
  • optical indexes such as color and brightness
  • the industry raises or reduces the ratio of brightness of a certain color by changing the gain of a certain partition of the phosphor.
  • this will result in the need to reform the formulation of the phosphor, thereby deriving different types of wavelength conversion devices. .
  • this practice is relatively complicated and difficult to implement.
  • embodiments of the present invention provide a projection apparatus, a light source system, and a method of controlling the current thereof to avoid the complicated practice adopted in the prior art to obtain a color effect of ideal saturation and brightness.
  • an embodiment of the present invention provides a light source system, including:
  • a light source module for emitting source light
  • a wavelength conversion device comprising at least two partitions, the wavelength conversion device periodically moving to cause the at least two partitions to be time-divisionally located on an optical path of the source light;
  • control module configured to acquire a time period in which each partition of the wavelength conversion device is located on the optical path during each motion period, and control, in each time period, according to a preset current value corresponding to the corresponding partition, to drive the The current of the light source module
  • the light source module comprises a plurality of light sources, the plurality of light sources divide the plurality of sets of light sources, and the control module independently controls each set of light sources.
  • the partitions are distributed in a ring shape or a block shape on the wavelength conversion device.
  • At least one of the zones is coated with a wavelength converting material.
  • the wavelength conversion device is provided with an identification block.
  • the light source system further comprises:
  • An inductor configured to sense the identification block, and transmit a pulse signal to the control module when the identification block is sensed
  • the control module is configured to receive the pulse signal, the time at which the pulse signal is received is a start time of a motion period of the wavelength conversion device, and determine that each partition of the wavelength conversion device is in the motion cycle The starting moment is located on the optical path of the source light, and the current for driving the light source module is adjusted according to a preset current value corresponding to the corresponding partition at the beginning time of each partition.
  • control module determines, according to the manner, the starting time of each partition of the wavelength conversion device on the optical path in one motion period: the starting time of one motion period is the first time in the motion period The starting time of the partition located on the optical path, the starting time of the other partitions sequentially located on the optical path during the motion period is equal to the ending time of the previous partition on the optical path, except for the last partition The ending time of each of the other partitions is equal to the starting time of the partition to accumulate the motion duration of the partition, and the motion duration of one partition is equal to the interval of the wavelength conversion device periodically moving at a constant predetermined speed. duration.
  • an embodiment of the present invention further provides a method for controlling current of a light source system, the method comprising the steps of:
  • the magnitude of the current used to drive the light source module is controlled according to preset current values corresponding to the respective partitions in each period.
  • the period of time when the respective partitions are located on the optical path in each motion period during the periodic motion of the wavelength conversion device includes:
  • the time at which the pulse signal is received is the start time of one motion period of the wavelength conversion device, and the start time of each section of the wavelength conversion device on the optical path of the source light is determined during the motion period, And adjusting the current for driving the light source module according to a preset current value corresponding to the corresponding partition at the beginning time of each partition.
  • an embodiment of the present invention further provides a projection apparatus including the light source system described in the embodiment of the present invention.
  • the projection device, the light source system and the method for controlling the current provided by the embodiments of the present invention can provide different preset currents to the light source module only when entering the optical path for different partitions of the wavelength conversion device, thereby making the brightness and saturation of the light source become Easier to control to get the desired color.
  • FIG. 1 is a schematic structural diagram of a light source system according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of a control module according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart of a method for controlling current of a light source system according to Embodiment 3 of the present invention.
  • Embodiment 4 is a flow chart of a method for controlling current of a light source system according to Embodiment 4 of the present invention.
  • FIG. 5 is a schematic diagram of preset current values corresponding to each partition on the wavelength conversion device according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic circuit diagram of a control current of a light source system according to Embodiment 6 of the present invention.
  • FIG. 7 is a waveform diagram of actual current reference output by the light source system according to Embodiment 7 of the present invention.
  • FIG. 1 is a schematic structural diagram of a light source system according to Embodiment 1 of the present invention, which includes a wavelength conversion device 10, a light source module 22, and a control module 20.
  • the light source module 22 is configured to emit source light.
  • the light source module 22 can include a plurality of light sources, which can be laser diodes or other optics that control brightness.
  • the plurality of light sources may also divide the light sources into groups according to actual needs to achieve independent control.
  • the wavelength conversion device 10 partially in the optical path of the light source module 22, includes at least two partitions, and the wavelength conversion device 10 periodically moves to cause the at least two partitions to be time-divisionally located on the optical path of the source light.
  • the wavelength conversion device portion is positively moving the light path of the light source module 22 when the wavelength conversion device is periodically moving, so that the partition is facing the light path of the light source module 22.
  • the source light of the light source module 22 is directly projected onto the wavelength conversion device 10.
  • other optical components may be added between the light source 22 and the wavelength conversion device 10.
  • the wavelength conversion device 10 has a disk shape, and the wavelength conversion device is divided into a red partition 10a, a green partition 10b, a blue partition 10c, and a yellow partition 10d. Each of the partitions is annularly distributed on the wavelength conversion device 10.
  • the partitions 10a-10d At least one of the coatings is coated with a wavelength converting material for absorbing a portion of the excitation light of the partition and emitting a laser having a wavelength different from the wavelength of the excitation light, that is, by differentiating the light source module 22 by the partitioned wavelength converting material. Other colored light that emits excitation light.
  • the wavelength converting material is preferably a phosphorescent material such as a phosphor or a nano material (such as quantum dots) Wait.
  • This wavelength converting material may be coated on the surface of the substrate of the wavelength conversion device 10 or doped into the material of the substrate.
  • the wavelength conversion device 10 is driven by a motor (not shown) to perform periodic rotation.
  • the wavelength conversion device may also take on other shapes, for example, in the form of a strip or a barrel.
  • the strip or barrel-shaped wavelength conversion device may divide a plurality of partitions according to actual needs, and the divided plurality of partitions may be in a block shape or a strip shape.
  • the wavelength conversion device can be linearly and periodically moved up and down under the driving of the motor to allow at least two partitions on the wavelength conversion device to be time-divisionally located on the optical path of the source light.
  • the control module 20 is configured to acquire a time period in which each partition of the wavelength conversion device 10 is located on the optical path during each motion period, and control driving for driving according to a preset current value corresponding to the corresponding partition in each time period.
  • the current used to drive the light source module is equal to the preset current value corresponding to the partition during a period in which a certain partition is located on the optical path.
  • the current of the power supply of the light source module 22 can be changed to make the light source module Light of different brightness is emitted.
  • a current value can be preset for each partition on the wavelength conversion device.
  • the preset current value may be set according to an empirical value or according to an actual product.
  • a corresponding current value may be preset for the red partition 10a, for example, 2.2 amps.
  • the magnitude of the current for driving the light source module is equal to the preset current corresponding to the red partition 10a. value.
  • the wavelength conversion device 10 is provided with an identification block 12 that moves with the periodic movement of the wavelength conversion device.
  • the light source system further includes:
  • the control module is configured to receive the pulse signal to receive a pulse signal at a start time of a motion period of the wavelength conversion device, and determine that each partition of the wavelength conversion device is located in the motion period The starting time of the optical path, and adjusting the current for driving the light source module according to a preset current value corresponding to the corresponding partition at each starting time.
  • the control module determines, according to the manner, the start time of each partition of the wavelength conversion device on the optical path in one motion period: the start time of one motion period is the first location in the motion period The starting time of the partition on the optical path, the starting time of the other partitions sequentially located on the optical path in the motion period is equal to the ending time of the previous partition on the optical path, except for the last partition The end time of the partition is equal to the start time of the partition to accumulate the motion duration of the partition, and the motion duration of the partition is equal to the duration of the partition on the optical path when the wavelength conversion device periodically moves at a constant predetermined speed. .
  • the radius at which the second edge 12b of the identification block 12 is located divides the yellow partition 10d into a first yellow partition and a second yellow partition arranged in a clockwise direction, the red partition 10a having a first edge 10e .
  • a timer (not shown) in the control module 20 starts timing, and determines to start entering the second yellow.
  • the red partition 10a enters the start time of the optical path; when the red partition 10a enters the optical path, the timer starts counting, and the rotation duration of the red partition 10a in the optical path is indicated by T1, and when the T1 duration ends, it is determined that the T1 ends.
  • the green partition 10b enters the start time of the optical path; similarly, the rotation duration of the green partition 10b can be represented by T2.
  • T2 duration ends, it is determined that the T2 end time is the start time of the blue partition 10c entering the optical path;
  • the rotation duration of the blue partition 10c into the light source path can be represented by T3.
  • T3 duration ends, it is determined that the T3 end time is the start time of the first yellow partition entering the optical path.
  • durations T0, T1, T2, and T3 are mainly determined by factors such as the rotational speed of the wavelength conversion device and the angular difference of the corresponding partition.
  • the rotation speed of the wavelength conversion device is 120HZ, and the counterclockwise rotation is taken as an example.
  • the corresponding preset durations T0, T1, T2, and T3 can be correspondingly converted by the following algorithm, and the unit is uS;
  • T0 1000 * 1000 / 120 * R0/360, where R0 is an angular difference between the second edge 12b of the identification block and the first edge 10e of the red partition;
  • T1 1000 * 1000 / 120 * R1/360, where R1 is the angular difference between the two edges of the red partition;
  • T2 1000 * 1000 / 120 * R2 / 360, where R2 is the angular difference between the two edges of the green partition;
  • T3 1000 * 1000 / 120 * R3 / 360, where R3 is the angular difference between the two edges of the blue partition.
  • the identification block 12 disposed on the wavelength conversion device 10 is generally a black tape having a light absorbing function, and an inductor 21 (shown in FIG. 2) is disposed near the surface of the wavelength conversion device 10 in the identification block.
  • the sensor 21 is usually an infrared sensor, and the infrared sensor emits detection light. Due to the light absorption of the identification block, when the detection light is irradiated onto the identification block during the rotation of the motor, the detection light is absorbed, and the infrared sensor cannot receive the light. When the probe light is irradiated to other positions on the surface of the motor, the probe light is reflected back, and the infrared sensor is connected. Received, so that the infrared sensor forms a waveform according to the absorption and reflection of infrared light, thereby determining the starting position of the wavelength conversion device.
  • the identification block 12 has a first edge 12a and a second edge 12b.
  • the first edge 12a can serve as a starting position of the wavelength conversion device; and the second edge 12b can also serve as a starting position of the wavelength conversion device.
  • the light source system provided by the embodiment of the present invention controls the time interval of each partition on the optical path in each motion cycle during the periodic motion of the wavelength conversion device, and controls the preset current value corresponding to the corresponding partition in each time period.
  • the magnitude of the current driving the light source module Embodiments of the present invention can provide different preset currents to the light source module only when entering the optical path for different partitions of the wavelength conversion device, thereby making the brightness and saturation of the light source easier to control to obtain an ideal color.
  • FIG. 2 is a schematic diagram of connection of a control module with other components according to Embodiment 2 of the present invention.
  • the control module 20 is connected to the inductor 21 and the light source module 22, respectively.
  • the light source module 22 is electrically connected to the control module 20 for generating corresponding source light according to the current output by the control module 20, and projecting the source light onto the wavelength conversion device to generate the excited light.
  • the inductor 21 is disposed adjacent to the surface of the wavelength conversion device 10 for sensing an identification block on the wavelength conversion device.
  • the sensor 21 detects the first edge 12a or the second edge 12b of the identification block 12 as a starting position.
  • the sensor 21 When the sensor 21 senses the first edge 12a or the second edge 12b of the identification block on the wavelength conversion device, the sensor 21 generates a pulse signal and transmits the pulse signal back to the control module 20 as the The start of a motion cycle of the wavelength conversion device.
  • the control module 20 identifies the starting time by a rising or falling edge of the pulse signal.
  • FIG. 3 is a flowchart of a method for controlling current of a light source system according to Embodiment 3 of the present invention. The method includes the steps of:
  • Step S300 Acquire a time period in which each partition is located on the optical path in each motion period during the periodic motion of the wavelength conversion device.
  • the pulse signal is transmitted to the control module
  • the timing at which the pulse signal is received is the start time of one motion period of the wavelength conversion device, and the start time of each section of the wavelength conversion device on the optical path of the source light is determined during the motion period.
  • a starting time of one motion period is the first one of the motion periods is located on the optical path
  • the start time of the partition, the start time of the other partitions sequentially located on the optical path during the motion period is equal to the end time of the previous partition on the optical path, and the end of each partition except the last partition
  • the time equal to the start time of the partition accumulates the motion duration of the partition
  • the motion duration of the partition is equal to the duration of the partition on the optical path when the wavelength conversion device periodically moves at a constant predetermined speed.
  • Step S310 controlling the magnitude of the current used to drive the light source module according to the preset current value corresponding to the corresponding partition in each time period.
  • the current for driving the light source module is adjusted according to a preset current value corresponding to the corresponding partition at the start time of each partition.
  • FIG. 4 is a flow chart of a method of controlling current of a light source system according to Embodiment 4 of the present invention. 4 is based on the third embodiment shown in FIG. 3, and is further optimized for the starting time of each partition to achieve a more precise control of the current level of the light source system. In this embodiment, the timer is reset.
  • the method includes the steps of:
  • Step S400 when the sensor senses the start time of the identification block, start timing to obtain T0;
  • Step S410 when the T0 duration ends, determining that the T0 end time is the start time of the first partition, the control module controls the current magnitude of the driving light source according to the corresponding preset current value of the first partition, and timed to obtain T1;
  • Step S420 when the T1 duration ends, determining that the T1 end time is the start time of the second partition, the control module controls the current of the driving light source according to the corresponding preset current value of the second partition, and time is obtained.
  • Step S430 the above steps are cycled until each partition of the wavelength conversion device enters the optical path, and the corresponding preset current value of each partition is controlled to control the current magnitude of the driving light source.
  • FIG. 5 is a schematic diagram of different current values outputted by different partitions of a wavelength conversion device according to Embodiment 5 of the present invention.
  • the magnitude of the current used to drive the light source module for example, Iy, Ir, Ig, Ib
  • the control module controls the current of the driving light source module according to the preset current value Iy corresponding to the yellow partition of the identification block, and at the same time, the timer starts timing, when T0 At the end of the duration, it is determined that the end time of T0 is the starting time of the red zone 10a entering the optical path.
  • the current output value of the driving driving light source module is controlled to Ir; when the red partition 10a enters the light source optical path, the timer starts counting, and when the T1 duration ends
  • the current output value of the control driving light source module is controlled to be Ig; when the green zone 10b enters the light source optical path, the timer starts counting, when the T2 duration ends, Determining the end time of T2 is the starting time of the green partition 10c entering the optical path.
  • the current output value of the driving light source module is controlled to be Ib; when the blue partition 10c enters the light source optical path, the timer starts counting, and when the T3 duration ends, it is determined.
  • the end time of T3 is the starting time of the yellow partition 10d entering the light source, at this time controlling the current output of the driving light source module Is Iy; when the sensor again senses the identification block, the wavelength conversion device is determined to enter the next periodic motion is entered at a current control, the current control mode under a as above.
  • FIG. 6 is a schematic diagram of a circuit principle of a control module of a light source system according to Embodiment 6 of the present invention.
  • the pulse signal is transmitted to the PIN of the MCU (microcontroller unit).
  • the MCU recognizes the starting position of the identification block after receiving the pulse signal, and the timer starts counting.
  • the MCU passes through the PIN30 foot.
  • the filter circuit (composed of inductor R65 and capacitor C49) outputs an analog voltage I-LEVEL of a different amplitude.
  • the analog voltage I-LEVEL of different amplitudes controls the conduction state of Q13, and controls the constant current control pin CSH of the constant current control chip LM3421 through the current mirror chip U3, thereby controlling the driving current of the light source module.
  • analog voltage I-LIVEL having different amplitudes may be directly input to the constant current control pin CSH of the constant current control chip LM3421.
  • the MCU may be replaced by other methods, such as a DSP, a digital chip, or an analog circuit.
  • FIG. 7 is a waveform diagram of actual current reference output by the light source system according to Embodiment 7 of the present invention. It can be seen from the figure that during a motion period in which the wavelength conversion device rotates, different sections of the wavelength conversion device enter the optical path successively according to different time periods, and the driving light source module is controlled according to the preset current value corresponding to the corresponding partition in each time period. The current is the same size.
  • Embodiment 8 of the present invention further provides a projection apparatus, which includes the light source system described in the embodiment of the present invention, and can implement the method of controlling current by the light source system in the embodiment of the present invention to realize time-phase current control. For better light and saturation of light.
  • the above product can perform the method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Projection Apparatus (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

一种光源系统、包括光源系统的投影装置以及光源系统控制电流的方法，可以使光源亮度及饱和度变得更容易控制，以获得理想色彩。光源系统包括用于发射源光的光源模块（22）、包括至少两个分区的波长转换装置（10）以及控制模块（20）。波长转换装置（10）周期性运动以使至少两个分区分时位于源光的光路上。控制模块（20）用于获取波长转换装置（10）周期性运动过程中每一运动周期内各个分区位于光路上的时段，在各时段内根据相应分区对应的预设电流值控制用于驱动光源模块（22）的电流的大小。

Description

投影装置、光源系统及其控制电流的方法 技术领域
本发明涉及光源控制技术领域，更具体地说，涉及一种投影装置、光源系统及其控制电流的方法。
 背景技术
在如今的投影机市场上，一般都是以汞灯作为照明光源，因为其有着价格低廉以及高亮度的优势。随着固态照明的快速发展，可用于投影机光源的选择趋于多样化，而光源就是其中的一种选择。光源作为投影机的光源优势在于能耗低等，但与此同时，价格昂贵且亮度降低则是光源的软肋，因此，一般不太可能以不同颜色的激光二极管来产生不同的色彩，作为市场主流方向，通常使用纯色的激光二极管来作为投影机的光源。
 技术问题
然而，通过上述光源获得的色彩效果有时并不理想，因此需要调节色彩和亮度等光学指标业来优化色彩效果，例如提升某个颜色亮度的比例或降低另一个颜色亮度的比例。通常，业界通过采用改变荧光粉的某一分区增益的方式来提升或降低该颜色亮度的比例，然而，这将导致需要将荧光粉的配方重新配制，由此会派生出不同种类的波长转换装置。然而，这种做法相对复杂，不易实施。
 技术解决方案
有鉴于此，本发明实施例提供一种投影装置、光源系统及其控制电流的方法，以避免现有为获取理想饱和度及亮度的色彩效果而采用的复杂做法。
第一方面，本发明实施例提供一种光源系统，其包括：
光源模块，用于发射源光；
波长转换装置，包括至少两个分区，所述波长转换装置周期性运动以使所述至少两个分区分时位于所述源光的光路上；
以及
控制模块，用于获取所述波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段，在各时段内根据相应分区对应的预设电流值控制用于驱动所述光源模块的电流的大小
优选的，所述光源模块包括多个光源，所述多个光源划分多组光源，所述控制模块对每组光源独立控制。
优选的，所述分区呈环形或块状分布于所述波长转换装置上。
优选的，至少一分区涂布有波长转换材料。
优选的，所述波长转换装置上设置有标识块，优选的，所述光源系统还包括：
感应器，用于感应标识块，并在感应到所述标识块时，向所述控制模块传送脉冲信号；
所述控制模块用于接收所述脉冲信号，以接收到所述脉冲信号的时刻为所述波长转换装置的一个运动周期的起始时刻，并确定所述波长转换装置的各个分区在该运动周期内位于所述源光的光路上的起始时刻，并在各分区起始时刻按照相应分区对应的预设电流值调节用于驱动所述光源模块的电流。
进一步的，所述控制模块按照下述方式确定所述波长转换装置的各个分区在一个运动周期内位于所述光路上的起始时刻：以一个运动周期的起始时刻为该运动周期内第一个位于所述光路上的分区的起始时刻，在该运动周期内依次位于所述光路上的其它分区的起始时刻等于上一分区位于所述光路上的终结时刻，除最后一个分区以外的其它每一分区的终结时刻等于本分区的所述起始时刻累加本分区的运动时长，一个分区的运动时长等于所述波长转换装置按照恒定的预定速度进行周期性运动时该分区位于光路上的时长。
第二方面，本发明实施例还提供一种光源系统控制电流的方法，该方法包括步骤：
获取波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段；
在各时段内根据相应分区对应的预设电流值控制用于驱动光源模块的电流的大小。
优选的，获取波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段具体包括：
在感应到标识块时，向控制模块传送脉冲信号；
以接收到所述脉冲信号的时刻为所述波长转换装置的一个运动周期的起始时刻，并确定所述波长转换装置的各个分区在该运动周期内位于源光的光路上的起始时刻，并在各分区起始时刻按照相应分区对应的预设电流值调节用于驱动所述光源模块的电流。
第三方面，本发明实施例还提供一种投影装置，该投影装置包括本发明实施例中所述的光源系统。
 有益效果
本发明实施例提供的投影装置、光源系统及其控制电流的方法，可以仅通过针对波长转换装置不同的分区进入光路时给光源模块提供不同的预设电流，从而使光源亮度及饱和度变得更容易控制，以获取理想色彩。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明实施例一提供的光源系统结构示意图。
图2为本发明实施例二提供的控制模块结构示意图。
图3为本发明实施例三提供的光源系统控制电流的方法的流程图。
图4为本发明实施例四提供的光源系统控制电流的方法的流程图。
图5为本发明实施例五提供的波长转换装置上的各分区对应的预设电流值示意图。
图6为本发明实施例六提供的光源系统的控制电流的电路原理示意图。
图7为本发明实施例七提供的光源系统输出的实际电流参考波形图。
 本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
如图1所示，为本发明实施例一提供的光源系统结构示意图，其包括波长转换装置10、光源模块22及控制模块20。
其中，所述光源模块22，用于发射源光。所述光源模块22可包括多个光源，所述光源可以是激光二极管或其它可控亮度的光学器件。
优选的，所述多个光源也可以依据实际需求将光源划分为几组，以实现独立控制。
波长转换装置10，部分正对该光源模块22的光路，其包括至少两个分区，所述波长转换装置10周期性运动以使所述至少两个分区分时位于所述源光的光路上。
可以理解的是，该波长转换装置部分正对该光源模块22光路其实是所述波长转换装置周期性运动时，以使分区正对该光源模块22的光路。在图1中，所述光源模块22的源光是直接投射至所述波长转换装置10上。在其它实施例中，可以在所述光源22及波长转换装置10间增加其它光学元件。
具体的，如图中所示，所述波长转换装置10呈圆盘形状，所述波长转换装置划分为红色分区10a，绿色分区10b，蓝色分区10c及黄色分区10d。其中每一分区呈环形分布于所述波长转换装置10上。所述分区10a-10d 中的至少一个涂布有波长转换材料，用于吸收该分区的部分激发光，并发出波长不同于激发光的波长的受激光，亦即可通过分区的波长转换材料来产生不同于光源模块22发出的激发光的其它色光。所述波长转换材料优选为磷光性材料、例如磷光体、纳米材料( 如量子点) 等。此波长转换材料可涂布于波长转换装置10的基板的表面上，或者掺杂于基板的材料内。所述波长转换装置10通过马达（未示出）带动来进行周期性转动。
在其它实施例中，所述波长转换装置也可以呈现其它形状，例如，呈条状或圆桶状。将所述条状或圆桶状波长转换装置可依据实际需求划分多个分区，所述划分的多个分区可以呈块状或条状。所述波长转换装置在马达的带动下可以上下线性周期性运动以让波长转换装置上的至少两个分区分时位于源光的光路上。
控制模块20，用于获取所述波长转换装置10周期性运动过程中每一运动周期内各个分区位于所述光路上的时段，在各时段内根据相应分区对应的预设电流值控制用于驱动所述光源模块的电流的大小。使得某一分区位于光路上的时段内，用于驱动光源模块的电流大小等于该分区对应的预设电流值。
具体而言，为了使光源模块22发出的激发光经过所述波长转换装置10后生成的受激发光的颜色亮度及饱和度更好，可以通过改变光源模块22的供电电源的电流以使光源模块发出不同亮度的光。为了让所有受激发光的颜色及亮度都达到理想效果，可以针对所述波长转换装置上的每一分区预设电流值。所述预设电流值可以依据经验值设置，或者依据实际产品来设置。针对红色分区10a可以预设对应的电流值，例如2.2安培，在波长转换装置10的红色分区10a位于光路上的时段内，用于驱动光源模块的电流大小等于该红色分区10a对应的预设电流值。
所述波长转换装置10上设置有标识块12，所述标识块随着所述波长转换装置的周期性运动而运动。
所述光源系统还包括：
感应器，用于感应所述标识块，并在感应到所述标识块时，向所述控制模块传送脉冲信号；所述感应器传送两个连续脉冲信号之间的时段为所述波长转换装置的一个运动周期；
所述控制模块用于接收所述脉冲信号，以接收到一个脉冲信号的时刻为所述波长转换装置的一个运动周期的起始时刻，确定所述波长转换装置的各个分区在该运动周期内位于所述光路上的起始时刻，并在各起始时刻按照相应分区对应的预设电流值调节用于驱动所述光源模块的电流。
所述控制模块按照下述方式确定所述波长转换装置的各个分区在一个运动周期内位于所述光路上的起始时刻：以一个运动周期的起始时刻为该运动周期内第一个位于所述光路上的分区的起始时刻，在该运动周期内依次位于所述光路上的其它分区的起始时刻等于上一分区位于所述光路上的终结时刻，除最后一个分区以外的其它每一分区的终结时刻等于本分区的所述起始时刻累加本分区的运动时长，一分区的运动时长等于所述波长转换装置按照恒定的预定速度进行周期性运动时该分区位于所述光路上的时长。
具体而言，如图1中，标识块12的第二边缘12b所在的半径将黄色分区10d分成按顺时针排列的第一黄色分区和第二黄色分区，所述红色分区10a具有第一边缘10e。以波长转换装置逆时针转动为例，当感应器21识别所述标识块12的第二边缘12b时，所述控制模块20中的计时器（未示出）开始计时，确定开始进入第二黄色分区，并以T0表示所述第二边缘12a转动至红色分区10a的第一边缘10e时长，即以T0表示第二黄色分区位于光路上的时长，当T0时长结束时，确定该T0结束时刻为红色分区10a进入光路的起始时刻；当红色分区10a进入光路时，所述计时器开始计时，并以T1表示该红色分区10a在光路中的转动时长，当T1时长结束时，确定该T1结束时刻为绿色分区10b进入光路的起始时刻；同理，绿色分区10b的转动时长可用T2表示，当T2时长结束时，确定该T2结束时刻为蓝色分区10c进入光路的起始时刻；同样，蓝色分区10c进入光源光路中的转动时长可用T3表示，当T3时长结束时，确定该T3结束时刻为第一黄色分区进入光路的起始时刻。
需要说明的是，所述时长T0、T1、T2、T3主要是由波长转换装置的转动速度及相应分区的角度差等因素来决定。
具体的，现以波长转换装置的转动速度为120HZ，逆时钟转动为例，可通过如下算法来对应转换相应的预设时长T0，T1，T2，T3，单位为uS；
T0 =1000*1000/120 * R0/360，其中R0为标识块第二边缘12b与红色分区第一边缘10e的角度差；
T1 =1000*1000/120 * R1/360，其中R1为红色分区两边缘的角度差；
T2 =1000*1000/120 * R2/360，其中R2为绿色分区两边缘的角度差；
T3 =1000*1000/120 * R3/360，其中R3为蓝色分区两边缘的角度差。
优选的，所述波长转换装置10上设置的标识块12通常为黑色胶带，具有吸光作用，并在标识块贴近所述波长转换装置10表面附近设置感应器21（如图2所示），所述感应器21通常为红外传感器，红外传感器发出探测光，由于标识块的吸光作用，在马达转动过程中，当探测光照射到标识块上时，探测光被吸收，红外传感器无法接收到，而当探测光照射到马达表面其他位置时，探测光则被反射回去，使红外传感器接 收到，从而红外传感器根据红外光吸收和反射的情况来形成波形图，以此来确定波长转换装置的起始位置。
进一步的，所述标识块12具有第一边缘12a及第二边缘12b。其中，所述第一边缘12a可以作为波长转换装置的起始位置；所述第二边缘12b也可以作为波长转换装置的起始位置。本发明实施例提供的光源系统通过获取所述波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段，在各时段内根据相应分区对应的预设电流值控制用于驱动所述光源模块的电流的大小。本发明实施例可以仅通过针对波长转换装置不同的分区进入光路时给光源模块提供不同的预设电流，从而使光源亮度及饱和度变得更容易控制，以获取理想色彩。
实施例二
图2为本发明实施例二提供的控制模块的与其它部件的连接示意图。在图2中，所述控制模块20分别与感应器21及光源模块22相连。
光源模块22与所述控制模块20电性连接，用于依据所述控制模块20输出的电流产生相应源光，并将源光投射至波长转换装置上产生受激发光。
所述感应器21设置于贴近所述波长转换装置10表面附近，用于感应所述波长转换装置上的标识块。在本实施例中，具体的，所述感应器21是检测所述标识块12的第一边缘12a或第二边缘12b以作为起始位置。
当感应器21感应到波长转换装置上的标识块的第一边缘12a或第二边缘12b时，所述感应器21产生一脉冲信号并将所述脉冲信号回传至控制模块20以作为所述波长转换装置的一个运动周期的起始时刻。所述控制模块20是通过该脉冲信号的上升沿或下降沿来识别出该起始时刻。
实施例三
图3为本发明实施例三提供的光源系统的控制电流的方法的流程图。该方法包括步骤：
步骤S300，获取波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段。
具体的，在感应到标识块时，向控制模块传送脉冲信号；
以接收到所述脉冲信号的时刻为所述波长转换装置的一个运动周期的起始时刻，并确定所述波长转换装置的各个分区在该运动周期内位于源光的光路上的起始时刻。
所述确定所述波长转换装置的各个分区在一个运动周期内位于所述光路上的起始时刻的方式如下：以一个运动周期的起始时刻为该运动周期内第一个位于所述光路上的分区的起始时刻，在该运动周期内依次位于所述光路上的其它分区的起始时刻等于上一分区位于所述光路上的终结时刻，除最后一个分区以外的其它每一分区的终结时刻等于本分区的所述起始时刻累加本分区的运动时长，一分区的运动时长等于所述波长转换装置按照恒定的预定速度进行周期性运动时该分区位于所述光路上的时长。
步骤S310，在各时段内根据相应分区对应的预设电流值控制用于驱动光源模块的电流的大小。
具体的，在各分区起始时刻按照相应分区对应的预设电流值调节用于驱动所述光源模块的电流。
实施例四
图4是本发明实施例四提供的光源系统的控制电流的方法的流程图。图4是以图3所示的实施例三为基础，针对每一分区的起始时刻作进一步优化以达到更精准的控制光源系统的电流大小。在本实施例中，计时器以重置方式
该方法包括步骤：
步骤S400，当感应器感应到标识块的起始时刻时，开始计时以获得T0；
步骤S410，当T0时长结束时，确定该T0结束时刻为第一分区的起始时刻，控制模块依据所述第一分区的对应预设电流值控制驱动光源的电流大小，并计时以获得T1；
步骤S420，当T1时长结束时，确定该T1结束时刻为第二分区的起始时刻，所述控制模块依据所述第二分区的对应预设电流值控制驱动光源的电流大小，并计时以获得T2；
步骤S430，循环上述步骤直至所述波长转换装置各分区分别进入光路，并控制每一分区的对应预设电流值控制驱动光源的电流大小。
实施例五
图5为本发明实施例五提供的针对波长转换装置不同分区输出的不同电流值的示意图。如图所示，在各时段内根据相应分区对应的预设电流值控制用于驱动光源模块的电流的大小，例如，Iy，Ir，Ig，Ib。当波长转换装置开始运动后，感应器感应到标识块后，控制模块依据标识块所在黄色分区对应的预设电流值Iy控制驱动光源模块的电流大小，与此同时，计时器开始计时，当T0时长结束时，确定T0结束时刻为红色分区10a进入光路的起始时刻，此时控制驱动光源模块的电流输出值为Ir；当红色分区10a进入光源光路后，计时器开始计时，当T1时长结束时，确定T1结束时刻为绿色分区10b进入光路的起始时刻，此时控制驱动光源模块的电流输出值为Ig；当绿色分区10b进入光源光路后，计时器开始计时，当T2时长结束时，确定T2结束时刻为绿色分区10c进入光路的起始时刻，此时控制驱动光源模块的电流输出值为Ib；当蓝色分区10c进入光源光路后，计时器开始计时，当T3时长结束时，确定T3结束时刻为黄色分区10d进入光源的起始时刻，此时控制驱动光源模块的电流输出值为Iy；当感应器再次感应到标识块后，则确定所述波长转换装置进入下一周期性运动则开始进入下一轮的电流控制，所述下一轮的电流控制方式如同上述。
实施例六
图6为本发明实施六提供的光源系统的控制模块的电路原理示意图。
如图所示，当感应器检测到脉冲信号CW-INDEX时，将该脉冲信号传至MCU（microcontroller unit，微控制单元）的PIN 28脚上，所述MCU接收到该脉冲信号后识别出标识块的起始位置，同时计时器开始计时，所述T0、T1、T2、T3时长结束时，所述MCU从PIN30脚上经过一滤波电路（由电感R65与电容C49组成）输出一幅度不同的模拟电压I-LEVEL。
所述幅度不同的模拟电压I-LEVEL控制Q13的导通状态，并通过电流镜像芯片U3控制恒流控制芯片LM3421的恒流控制脚CSH，由此控制光源模块的驱动电流。
在其它实施例中，也可以将幅度不同的模拟电压I-LIVEL直接输入恒流控制芯片LM3421的恒流控制脚CSH来实现。
进一步的，在其它实施例中，所述MCU还可用其它方式来替代，例如，DSP、数字芯片或模拟电路等。
实施例七
图7为本发明实施例七提供的光源系统输出的实际电流参考波形图。由图中可知，在所述波长转换装置转动的一个运动周期内，对应不同时段，波长转换装置的不同分区先后进入光路，在各时段内根据相应分区对应的预设电流值控制驱动光源模块的电流的大小同。
实施例八
本发明实施例八还提供一种投影装置，所述投影装置包括本发明实施例中所述的光源系统，可以通过执行本发明实施例中的光源系统控制电流的方法以实现分时段电流的控制，以获取更理想亮度及饱和度的光线。
上述产品可执行本发明任意实施例所提供的方法，具备执行方法相应的功能模块和有益效果。未在本实施例中详尽描述的技术细节，可参见本发明任意实施例所提供的方法。
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。

Claims (13)

1、一种光源系统，其特征在于，包括：
光源模块，用于发射源光；
波长转换装置，包括至少两个分区，所述波长转换装置周期性运动以使所述至少两个分区分时位于所述源光的光路上；
以及
控制模块，用于获取所述波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段，在各时段内根据相应分区对应的预设电流值控制用于驱动所述光源模块的电流的大小。
2、根据权利要求1所述的光源系统，其特征在于，所述光源模块包括多个光源，所述多个光源划分多组光源，所述控制模块对每组光源独立控制。
3、根据权利要求2所述的光源系统，其特征在于，所述分区呈环形或块状分布于所述波长转换装置上。
4、根据权利要求3所述的光源系统，其特征在于，至少一分区涂布有波长转换材料。
5、根据权利要求1所述的光源系统，其特征在于，所述波长转换装置上设置有标识块，所述光源系统还包括：
感应器，用于感应标识块，并在感应到所述标识块时，向所述控制模块传送脉冲信号；
所述控制模块用于接收所述脉冲信号，以接收到所述脉冲信号的时刻为所述波长转换装置的一个运动周期的起始时刻，并确定所述波长转换装置的各个分区在该运动周期内位于所述源光的光路上的起始时刻，并在各分区起始时刻按照相应分区对应的预设电流值调节用于驱动所述光源模块的电流。
6、根据权利要求5所述的光源系统，其特征在于，所述控制模块按照下述方式确定所述波长转换装置的各个分区在一个运动周期内位于所述光路上的起始时刻：以一个运动周期的起始时刻为该运动周期内第一个位于所述光路上的分区的起始时刻，在该运动周期内依次位于所述光路上的其它分区的起始时刻等于上一分区位于所述光路上的终结时刻，除最后一个分区以外的其它每一分区的终结时刻等于本分区的所述起始时刻累加本分区的运动时长，一个分区的运动时长等于所述波长转换装置按照恒定的预定速度进行周期性运动时该分区位于光路上的时长。
7、一种投影装置，其特征在于，所述投影装置包括权利要求1-6中任意一项所述的光源系统。
8、一种光源系统控制电流的方法，其特征在于，该方法包括步骤：
获取波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段；
在各时段内根据相应分区对应的预设电流值控制用于驱动光源模块的电流的大小。
9、根据权利要求8所述的控制电流的方法，其特征在于，获取所述波长转换装置周期性运动过程中每一运动周期内各个分区位于所述光路上的时段具体包括：
在感应到标识块时，向控制模块传送脉冲信号；
以接收到所述脉冲信号的时刻为所述波长转换装置的一个运动周期的起始时刻，并确定所述波长转换装置的各个分区在该运动周期内位于源光的光路上的起始时刻，并在各分区起始时刻按照相应分区对应的预设电流值调节用于驱动所述光源模块的电流。
10、根据权利要求8所述的控制电流的方法，其特征在于，所述控制模块按照下述方式确定所述波长转换装置的各个分区在一个运动周期内位于所述光路上的起始时刻：以一个运动周期的起始时刻为该运动周期内第一个位于所述光路上的分区的起始时刻，在该运动周期内依次位于所述光路上的其它分区的起始时刻等于上一分区位于所述光路上的终结时刻，除最后一个分区以外的其它每一分区的终结时刻等于本分区的所述起始时刻累加本分区的运动时长，一个分区的运动时长等于所述波长转换装置按照恒定的预定速度进行周期性运动时该分区位于光路上的时长。
11、根据权利要求10所述的控制电流的方法，其特征在于，所述光源模块包括多个光源，所述多个光源划分多组光源，所述控制模块对每组光源独立控制。
12、根据权利要求8所述的控制电流的方法，其特征在于，所述分区呈环形或块状分布于所述波长转换装置上。
13、根据权利要求8所述的控制电流的方法，其特征在于，至少一分区涂布有波长转换材料。
PCT/CN2017/082483 2016-07-29 2017-04-28 投影装置、光源系统及其控制电流的方法 Ceased WO2018018975A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610614130.3 2016-07-29
CN201610614130.3A CN107664905A (zh) 2016-07-29 2016-07-29 投影装置、光源系统及其控制电流的方法

Publications (1)

Publication Number Publication Date
WO2018018975A1 true WO2018018975A1 (zh) 2018-02-01

Family

ID=61017392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/082483 Ceased WO2018018975A1 (zh) 2016-07-29 2017-04-28 投影装置、光源系统及其控制电流的方法

Country Status (2)

Country Link
CN (1) CN107664905A (zh)
WO (1) WO2018018975A1 (zh)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101498416A (zh) * 2008-02-02 2009-08-05 绎立锐光科技开发(深圳)有限公司 可调节出射光颜色的光源及其方法
CN101957542A (zh) * 2010-04-18 2011-01-26 苏州佳世达光电有限公司 投影显示装置及光源驱动方法
CN103091953A (zh) * 2011-10-31 2013-05-08 台达电子工业股份有限公司 发光模块及显示装置
US20130169184A1 (en) * 2011-12-28 2013-07-04 Minebea Co., Ltd. Light source control device and light source control method
CN103442478A (zh) * 2013-07-16 2013-12-11 苏州佳世达光电有限公司 驱动电路及应用该驱动电路的投影机
CN103728824A (zh) * 2013-12-30 2014-04-16 苏州佳世达光电有限公司 光源系统
CN105785700A (zh) * 2016-01-14 2016-07-20 四川长虹电器股份有限公司 激光显示系统
CN105911807A (zh) * 2016-06-03 2016-08-31 青岛海信电器股份有限公司 激光投影方法及激光投影机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4743318B2 (ja) * 2008-11-27 2011-08-10 カシオ計算機株式会社 投影装置、投影方法及びプログラム
CN102645828B (zh) * 2011-12-01 2014-11-05 深圳市光峰光电技术有限公司 投影装置、显示用光源系统及其控制方法
CN104280992A (zh) * 2013-07-12 2015-01-14 台达电子工业股份有限公司 投影系统及适用于该投影系统的激光光源模块
CN105607401B (zh) * 2015-11-04 2017-10-24 海信集团有限公司 光源的双色轮同步控制方法
CN105223762B (zh) * 2015-11-04 2017-03-01 海信集团有限公司 光源输出控制方法、系统和激光投影设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101498416A (zh) * 2008-02-02 2009-08-05 绎立锐光科技开发(深圳)有限公司 可调节出射光颜色的光源及其方法
CN101957542A (zh) * 2010-04-18 2011-01-26 苏州佳世达光电有限公司 投影显示装置及光源驱动方法
CN103091953A (zh) * 2011-10-31 2013-05-08 台达电子工业股份有限公司 发光模块及显示装置
US20130169184A1 (en) * 2011-12-28 2013-07-04 Minebea Co., Ltd. Light source control device and light source control method
CN103442478A (zh) * 2013-07-16 2013-12-11 苏州佳世达光电有限公司 驱动电路及应用该驱动电路的投影机
CN103728824A (zh) * 2013-12-30 2014-04-16 苏州佳世达光电有限公司 光源系统
CN105785700A (zh) * 2016-01-14 2016-07-20 四川长虹电器股份有限公司 激光显示系统
CN105911807A (zh) * 2016-06-03 2016-08-31 青岛海信电器股份有限公司 激光投影方法及激光投影机

Also Published As

Publication number Publication date
CN107664905A (zh) 2018-02-06

Similar Documents

Publication Publication Date Title
WO2015149700A1 (zh) 一种光源系统及投影系统
US7365497B2 (en) Discharge lamp ignition device and projector
WO2016161924A1 (zh) 光源系统和投影系统
US8362707B2 (en) Light emitting diode based lighting system with time division ambient light feedback response
WO2017121233A1 (zh) 一种波长转换装置、光源系统以及投影装置
WO2016124094A1 (zh) 投影设备、投影控制系统及投影控制方法
WO2018107634A1 (zh) 光源系统及投影装置
WO2016180298A1 (zh) 一种发光装置及其发光控制方法、投影设备
CN101766056A (zh) 具有多个发光器件的电子设备
WO2018010467A1 (zh) 发光装置及相关投影系统
JPS6156915B2 (zh)
WO2018113226A1 (zh) 一种投影显示系统
CN110703553A (zh) 激光投影装置
US8076858B2 (en) Light sensing apparatus and method for luminaire calibration
WO2018018976A1 (zh) 投影装置、光源系统及其数字控制电流的方法
WO2018018975A1 (zh) 投影装置、光源系统及其控制电流的方法
US6246185B1 (en) High frequency ballast for high intensity discharge lamps
WO2016127814A1 (zh) 投影系统及其控制方法
US4636081A (en) Apparatus for reading color image
WO2018006633A1 (zh) 光源及相关投影系统
WO2018028236A1 (zh) 显示系统及图像调制方法
WO2018201627A1 (zh) 激发光源系统及投影设备
CN216696968U (zh) 一种显示设备及其光源
CN223899377U (zh) 调光控制电路、调光器及照明装置
CN112469166B (zh) 一种led灯控制电路、控制方法及led灯具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17833281

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17833281

Country of ref document: EP

Kind code of ref document: A1