CN209879242U - Projection device and light source system thereof - Google Patents
Projection device and light source system thereof Download PDFInfo
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- CN209879242U CN209879242U CN201920894165.6U CN201920894165U CN209879242U CN 209879242 U CN209879242 U CN 209879242U CN 201920894165 U CN201920894165 U CN 201920894165U CN 209879242 U CN209879242 U CN 209879242U
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Abstract
The projection device comprises a light source system, a light valve and a projection lens. The light source system comprises a laser light source, a control circuit, a wavelength conversion device and a light combination device. The laser light source provides a first light beam and includes a plurality of light emitting units. The control circuit is coupled with the laser light source, controls a part of the plurality of light-emitting units to provide the first light beams and detect the electrical characteristics, disables the light-emitting units when the characteristic parameters do not reach the preset value, and controls the rest of the light-emitting units to provide the first light beams. The wavelength conversion device is configured on the first light beam transmission path and converts part of the first light beam into a second light beam. The light combining device is configured on the transmission paths of the first light beam and the second light beam, and combines the second light beam and the first light beam to generate an illumination light beam. The light valve is positioned on the transmission path of the illumination light beam and converts the illumination light beam into an image light beam. The projection lens is positioned on the image light beam transmission path and converts the image light beam into a projection light beam. The projection device and the light source system thereof can prolong the time of replacing the light source, reduce the replacement frequency and improve the use convenience.
Description
Technical Field
The present invention relates to a display device, and more particularly to a projection device and a light source system thereof.
Background
In recent years, projection apparatuses mainly including solid-state light sources such as light-emitting diodes (LEDs) and laser diodes (laser diodes) have been in the market. Since the laser diode has a light emitting efficiency higher than about 20% compared to the light emitting diode, in order to break through the light source limitation of the light emitting diode, a pure color light source for generating a projector by exciting the phosphor with a laser light source is gradually developed. In addition, the laser projection device can use laser light source to excite the fluorescent powder to emit light, and can also directly use laser as the projector illumination light source, and has the advantage of adjusting the number of light sources according to the brightness requirement, so as to meet the requirements of projectors with different brightness.
Generally, most Laser projectors control Laser light source modules (Laser modules) by connecting all Laser diodes (Laser diodes) in the Laser light source modules in parallel to uniformly control the on and off of the Laser light source modules, so that when the service life of the Laser light source modules is over, the whole group of Laser light source modules needs to be replaced. For example, if the lifetime of a laser light source module is 10000 hours, the light source needs to be replaced after the laser projector is used for 10000 hours, but the projector is often installed on the ceiling, so the replacement of the light source is inconvenient.
The background section is only provided to assist in understanding the present invention, and therefore, the disclosure in the background section may include some known techniques that do not constitute a part of the knowledge of those skilled in the art. The statements in the background section do not represent any admission that the statements in this section, or the problems identified in connection with one or more embodiments of the present invention, as may be known or appreciated by those skilled in the art prior to filing the present application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a projection arrangement and light source system thereof can prolong the cycle time of changing laser light source, reduces the frequency of changing laser light source, and improves projection arrangement's convenience of use.
Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.
To achieve one or a part of or all of the above or other objectives, an embodiment of the present invention provides a projection apparatus, which includes a laser source, a control circuit, a wavelength conversion device, a light combining device, a light valve, and a projection lens. The laser light source provides a first light beam, and the laser light source comprises a plurality of light emitting units. The control circuit is coupled with the laser light source, the light-emitting units of the control part provide light beams as first light beams, the electrical characteristics of the light-emitting units providing the light beams are detected, when the characteristic parameters of the light-emitting units providing the light beams do not reach preset values, the light-emitting units providing the light beams are forbidden, and the rest light-emitting units are controlled to provide standby light beams as the first light beams. The wavelength conversion device is configured on the transmission path of the first light beam and converts part of the first light beam into a second light beam. The light combining device is configured on the transmission path of the first light beam and the second light beam, and combines the second light beam and the first light beam without wavelength conversion to generate the illumination light beam. The light valve is located on the transmission path of the illumination beam and converts the illumination beam into an image beam. The projection lens is positioned on the transmission path of the image light beam and converts the image light beam into a projection light beam.
The utility model also provides a projection arrangement's light source system, include laser source, control circuit, wavelength conversion equipment and close the light device. The laser light source provides a first light beam, and the laser light source comprises a plurality of light emitting units. The control circuit is coupled with the laser light source, the light-emitting units of the control part provide light beams as first light beams, the electrical characteristics of the light-emitting units providing the light beams are detected, when the characteristic parameters of the light-emitting units providing the light beams do not reach preset values, the light-emitting units providing the light beams are forbidden, and the rest light-emitting units are controlled to provide standby light beams as the first light beams. The wavelength conversion device is configured on the transmission path of the first light beam and converts part of the first light beam into a second light beam. The light combining device is configured on the transmission path of the first light beam and the second light beam, and combines the second light beam and the first light beam without wavelength conversion to generate the illumination light beam.
Based on the above, the embodiment of the utility model provides a when the characteristic parameter of the luminescence unit of light beam does not reach the default, the forbidden luminescence unit that provides the light beam to control all the other luminescence units and provide the first light beam that reserve light beam provided as laser light source, so alright prolong the cycle time of changing laser light source, reduce the frequency of changing laser light source, and improve projection arrangement's convenience in utilization.
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of a projection apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a laser light source and a control circuit of a projection apparatus according to an embodiment of the present invention.
Fig. 3A is a schematic diagram of an energy-enabled light source module according to an embodiment of the present invention.
Fig. 3B is a schematic diagram of an energy-enabled light source module according to another embodiment of the present invention.
Fig. 4 is a flowchart of a projection method of a projection apparatus according to an embodiment of the present invention.
Fig. 5 is a flowchart of a projection method of a projection apparatus according to another embodiment of the present invention.
Fig. 6 is a flowchart of a projection method of a projection apparatus according to another embodiment of the present invention.
Fig. 7 is a flowchart of a projection method of a projection apparatus according to another embodiment of the present invention.
Detailed Description
The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
Fig. 1 is a schematic view of a projection apparatus according to an embodiment of the present invention, please refer to fig. 1. The projection apparatus 10 includes a light source system, a light valve 110, and a projection lens 112. The light source system includes a laser source 102, a control circuit 104, a wavelength conversion device 106, and a light combining device 108. The control circuit 104 is coupled to the laser source 102, the laser source 102 includes a plurality of light emitting units (shown in fig. 2), and the laser source 102 is controlled by the control circuit 104 to provide the first light beam L1. Further, the control circuit 104 controls the light emitting units of the portion to provide the light beam as the first light beam L1. The wavelength conversion device 106 is disposed on the transmission path of the first light beam L1, and converts a portion of the first light beam L1 into the second light beam L2, and the other portion of the first light beam L1 directly penetrates the wavelength conversion device 106 without wavelength conversion or is reflected by the wavelength conversion device 106, and the wavelength conversion device 106 may be, for example, a fluorescent color wheel, but is not limited thereto. As known to those skilled in the art, when the wavelength conversion device 106 is a fluorescent color wheel, the first light beam L1 is incident at different positions of the fluorescent color wheel when the fluorescent color wheel rotates. In detail, the fluorescent color wheel has at least two regions, which are a first region and a second region respectively. The first region has a fluorescent material for converting the first light beam L1 into the second light beam L2, and the second region may be provided with a light-transmitting element (e.g., a glass plate) or a reflective sheet, or a reflective layer, such as a coated reflective layer, may be formed on the second region, without limitation.
The above-described part of the first light beam L1 thus refers to the first light beam L1 when irradiated on the first region of the wavelength conversion device 106, and the fluorescent material on the first region of the wavelength conversion device 106 converts the first light beam L1 into the second light beam L2. The other part of the first light beam L1 refers to the first light beam L1 when irradiated on the second region of the wavelength conversion device 106, so that the first light beam L1 can directly penetrate the second region of the wavelength conversion device 106, or the first light beam L1 is reflected by the second region of the wavelength conversion device 106, so-called the first light beam L1 when irradiated on the second region of the wavelength conversion device 106, that is, the first light beam L1' without wavelength conversion, which is described later.
The light combining device 108 is disposed on the transmission paths of the first light beam L1 and the second light beam L2, and combines the second light beam L2 and the first light beam L1' without wavelength conversion to generate the illumination light beam L3.
The light valve 110 is located on a transmission path of the illumination light beam L3, and converts the illumination light beam L3 into the image light beam L4, wherein the light valve 110 may be, for example, a digital micro-mirror device (DMD), a liquid-crystal-on-silicon (LCOS) panel, or a transmissive liquid crystal panel, but is not limited thereto. The projection lens 112 is located on the transmission path of the image light beam L4, converts the image light beam L4 into the projection light beam L5, and projects the projection light beam onto a projection screen (not shown) to form an image.
The control circuit 104 can detect an electrical characteristic (e.g., a voltage signal or a current signal) of the light emitting unit providing the light beam, for example, detect a magnitude of a current flowing through the light emitting unit to determine an operating state of the light emitting unit. When the characteristic parameters of the light-emitting units providing the light beams do not reach the predetermined value, for example, when the current flowing through the light-emitting units suddenly decreases to below the predetermined value, which indicates that the light-emitting units may have reached the service life and the light-emitting brightness may be attenuated, the control circuit 104 may disable the light-emitting units providing the light beams and control the remaining light-emitting units not providing the light beams to start providing the spare light beams as the first light beams L1, so as to ensure that the characteristic parameters of the light-emitting units providing the light beams meet the specification, and the laser light source 102 may continuously and stably provide the first light beams L1 meeting the projection requirements. By enabling the light-emitting units prepared in the laser source 102, the period of replacing the laser source can be prolonged, the frequency of replacing the laser source can be reduced, and the convenience of the projector 10 can be improved.
It should be noted that in some embodiments, the control circuit 104 may determine the operating state of the light-emitting unit by counting the time of use of the light-emitting unit, for example, in addition to detecting the electrical characteristics of the light-emitting unit providing the light beam, and when the time of use of the light-emitting unit exceeds a preset time period, the light-emitting unit providing the light beam is disabled, and the remaining light-emitting units not providing the light beam are controlled to start providing the standby light beam as the first light beam L1. In addition, in other embodiments, the control circuit 104 may also selectively disable the light-emitting units that originally provided the light beam, and enable other light-emitting units that originally did not provide the light beam to provide the light beam together, so as to make the first light beam L1 meet the projection requirement.
Fig. 2 is a schematic diagram of a laser light source and a control circuit of a projection apparatus according to an embodiment of the present invention. Further, the laser source 102 may include a first light source module M1 and a second light source module M2 coupled to the control circuit 104, in this embodiment, the first light source module M1 includes a plurality of first light emitting units LU 1-LU 4, and the second light source module M2 includes a plurality of second light emitting units LU 5-LU 8, wherein one light source module may include, for example, a laser diode bank (laser diode bank), and one light emitting unit may include, for example, a laser diode channel (laser diode channel), but is not limited thereto. The control circuit 104 may enable the first light emitting unit in the first light source module M1 and the second light emitting unit in the second light source module M2 to provide the light beam as the first light beam L1. For example, fig. 3A is a schematic diagram of an enabled light source module according to an embodiment of the present invention, in fig. 3A, the control circuit 104 enables the first light-emitting units LU1 and LU2 in the first light source module M1 and enables the second light-emitting units LU7 and LU8 in the second light source module M2 to provide light beams as the first light beam L1.
The control circuit 104 can determine whether the characteristic parameter of the light-emitting unit providing the light beam reaches a predetermined value according to the voltage or current feedback signal FB1 from the light-emitting unit providing the light beam, for example, determine whether the characteristic parameter of the light-emitting unit providing the light beam reaches the predetermined value according to the magnitude of the current flowing through the light-emitting unit. When the characteristic parameters of the first light-emitting units LU1, LU2 and the second light-emitting units LU7, LU8 providing light beams do not reach the preset values, the control circuit 104 can disable the first light-emitting units LU1, LU2 and the second light-emitting units LU7, LU8 providing light beams, and control the remaining first light-emitting units LU3, LU4 and the remaining second light-emitting units LU5, LU6 to provide spare light beams as the first light beams L1.
It should be noted that the light beams provided by the first light-emitting units LU1 and LU2 and the second light-emitting units LU7 and LU8 are incident on the light-combining device 108 to generate light spots, and the light spots provided by the first light-emitting units LU3 and LU4 and the spare light beams provided by the second light-emitting units LU5 and LU6 are incident on the light-combining device 108 to generate light spots with the same number and positions. For example, in fig. 3A, the light combining device 108 includes 16 light spots with unchanged positions before and after the first light emitting unit and the second light emitting unit that are switched to provide the first light beam L1, so as to ensure that the laser light source 102 can provide the first light beam L1 with similar or identical characteristics before and after the first light emitting unit and the second light emitting unit that are switched to provide the first light beam L1, and make the first light beam L1 meet the requirement of projection.
In addition, the configuration of the first light-emitting unit and the second light-emitting unit for providing the light beam at the beginning is not limited to the embodiment of fig. 3A, for example, in the embodiment of fig. 3B, the control circuit 104 can also control the first light-emitting units LU1 and LU3 and the second light-emitting units LU6 and LU8 as the light-emitting units for providing the light beam at the beginning, and then enable the first light-emitting units LU2 and LU4 and the second light-emitting units LU5 and LU7 as the light-emitting units for providing the spare light beam. That is, the light emitting units can be configured such that the laser light source 102 can provide the first light beam L1 with similar or identical light characteristics before and after switching between the first light emitting unit providing the first light beam L1 and the second light emitting unit.
In other embodiments, the control circuit 104 may also control all the light-emitting units (the first light-emitting units LU1 to LU4) of the first light source module M1 to provide the light beam as the first light beam L1, disable the first light-emitting units LU1 to LU4 when the characteristic parameters of the first light-emitting units LU1 to LU4 providing the light beam do not reach the preset value, and then enable all the light-emitting units (the second light-emitting units LU5 to LU7) of the second light source module M2 as the light-emitting units providing the backup light beam, but the driving manner of driving the light-emitting units of the whole light source module to emit light has a larger power consumption than the driving manner of driving only part of the light-emitting units in the light source module.
In addition, in some embodiments, the control circuit 104 may further control the projection apparatus 10 to project a display light source selection interface when the characteristic parameter of the light emitting unit providing the light beam does not reach a preset value, so as to remind the user that the light emitting unit has reached the service life and allow the user to select the light emitting unit providing the light beam. The control circuit 104 can disable the light-emitting units providing the light beams according to the light source selection command corresponding to the user selection operation, and control the remaining light-emitting units to provide the standby light beams as the first light beams L1, so that the control of the light source system is more flexible.
Fig. 4 is a flowchart of a projection method of a projection apparatus according to an embodiment of the present invention. In the above embodiments, the projection method of the projection apparatus may include at least the following steps. First, the light emitting unit of the control portion supplies a light beam as a first light beam (step S402). Then, whether the characteristic parameter of the light emitting unit providing the light beam reaches a predetermined value is detected (step S404), for example, whether the characteristic parameter of the light emitting unit providing the light beam reaches the predetermined value is determined according to a voltage or current feedback signal from the light emitting unit providing the light beam. If the characteristic parameter of the light-emitting unit providing the light beam reaches the predetermined value, for example, when the current flowing through the light-emitting unit is greater than the predetermined current value, it can represent that the light intensity provided by the light-emitting unit still meets the projection requirement, and at this time, the step S404 may be returned to continue to detect whether the characteristic parameter of the light-emitting unit providing the light beam reaches the predetermined value. If the characteristic parameters of the light-emitting units providing the light beams do not reach the preset value, the light-emitting units providing the light beams are disabled, the rest light-emitting units are controlled to provide the standby light beams as the first light beams (step S406), and then part of the first light beams are converted into the second light beams (step S408), wherein the light spots generated by the light combination device when the original light beams are incident and the light spots generated by the light combination device when the standby light beams are incident have the same number and position. Then, the second light beam and the first light beam without wavelength conversion are combined to generate an illumination light beam (step S410), the illumination light beam is converted into an image light beam (step S412), and finally the image light beam is converted into a projection light beam (step S414). Thus, the prepared light-emitting unit in the laser light source can prolong the period time for replacing the laser light source, reduce the frequency for replacing the laser light source and improve the use convenience of the projection device.
Fig. 5 is a flowchart of a projection method of a projection apparatus according to another embodiment of the present invention. The difference between the projection method of the present embodiment and the projection method of the embodiment shown in fig. 4 is that in the present embodiment, when it is detected that the characteristic parameter of the light-emitting unit providing the light beam does not reach the preset value, the projection apparatus can be controlled to project the display light source selection interface (step S502) to remind the user that the light-emitting unit has reached the service life and to allow the user to select the light-emitting unit providing the light beam. Then, the light-emitting units providing the light beams are disabled according to the light source selection instruction corresponding to the user selection operation, and the rest of the light-emitting units are controlled to provide the standby light beams as the first light beams (step S504), and then the steps S408-S414 are executed, so that the control of the light source system is more flexible.
Fig. 6 is a flowchart of a projection method of a projection apparatus according to another embodiment of the present invention. The difference between the projection method of this embodiment and the projection method of the embodiment in fig. 4 is that the laser light source includes a first light source module and a second light source module, and the first light source module includes a plurality of first light emitting units, and the second light source module includes a plurality of second light emitting units. In the present embodiment, a first light emitting unit in a portion of the first light source module and a second light emitting unit in a portion of the second light source module are enabled to provide a light beam as a first light beam (step S602), and then whether a characteristic parameter of the light emitting unit providing the light beam reaches a predetermined value is detected (step S404), if the characteristic parameter of the light emitting unit providing the light beam reaches the predetermined value, the step S404 is returned to continue to detect whether the characteristic parameter of the light emitting unit providing the light beam reaches the predetermined value. If the characteristic parameters of the light-emitting units providing the light beams do not reach the preset value, the first light-emitting units and the second light-emitting units providing the light beams are disabled, and the rest of the first light-emitting units and the rest of the second light-emitting units are controlled to provide the standby light beams as the first light beams (step S604), and then the steps S408 to S414 are executed.
Fig. 7 is a flowchart of a projection method of a projection apparatus according to another embodiment of the present invention. The difference between the projection method of the present embodiment and the projection method of the embodiment in fig. 6 is that in the present embodiment, all light emitting units (first light emitting units) in the first light source module are first enabled to provide light beams as first light beams (step S702). Then, whether the characteristic parameter of the light emitting unit providing the light beam reaches the preset value is detected (step S404), and if the characteristic parameter of the light emitting unit providing the light beam reaches the preset value, the step S404 is returned to continue to detect whether the characteristic parameter of the light emitting unit providing the light beam reaches the preset value. If the characteristic parameters of the light-emitting units providing the light beams do not reach the preset values, the first light-emitting unit providing the light beams is disabled, all the light-emitting units (second light-emitting units) in the second light source module are enabled to provide the standby light beams as the first light beams (step S704), and then the steps S408 to S414 are executed.
To sum up, the embodiment of the utility model provides a when the characteristic parameter of the luminescence unit that provides the light beam does not reach the default, the forbidden luminescence unit that provides the light beam to control all the other luminescence units and provide the first light beam that spare light beam provided as laser light source, so alright prolong the cycle time of changing laser light source, reduce the frequency of changing laser light source, and improve projection arrangement's convenience in use.
However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all simple equivalent changes and modifications made according to the claims and the contents of the present invention are still included in the scope of the present invention. Moreover, it is not necessary for any embodiment or claim of the invention to address all of the objects, advantages, or features disclosed herein. In addition, the abstract and the utility model name are only used to assist the searching of the patent documents, and are not used to limit the scope of the invention. In addition, the first, second, …, etc. mentioned in the specification are only used for indicating the names of the elements, and are not used for limiting the upper limit or the lower limit of the number of the elements.
Claims (13)
1. A projection device is characterized by comprising a laser light source, a control circuit, a wavelength conversion device, a light combination device, a light valve and a projection lens, wherein:
the laser light source provides a first light beam, and the laser light source comprises a plurality of light emitting units;
the control circuit is coupled with the laser light source, controls the plurality of light-emitting units of the part to provide light beams as the first light beams, detects the electrical characteristics of the plurality of light-emitting units providing the light beams, disables the plurality of light-emitting units providing the light beams when the characteristic parameters of the plurality of light-emitting units providing the light beams do not reach preset values, and controls the rest light-emitting units to provide standby light beams as the first light beams;
the wavelength conversion device is configured on a transmission path of the first light beam and converts part of the first light beam into a second light beam;
the light combining device is configured on a transmission path of the first light beam and the second light beam, and combines the second light beam and the first light beam without wavelength conversion to generate an illumination light beam;
the light valve is positioned on the transmission path of the illumination light beam and converts the illumination light beam into an image light beam; and
the projection lens is positioned on the transmission path of the image light beam and converts the image light beam into a projection light beam.
2. The projection device of claim 1, wherein the laser light source comprises:
a first light source module coupled to the control circuit, the first light source module including a plurality of first light emitting units; and
a second light source module coupled to the control circuit, the second light source module including a plurality of second light emitting units, the control circuit enabling the plurality of first light emitting units in the first light source module and the plurality of second light emitting units in the second light source module to provide the light beam as the first light beam, disabling the plurality of first light emitting units and the plurality of second light emitting units providing the light beam when characteristic parameters of the plurality of first light emitting units and the plurality of second light emitting units providing the light beam do not reach the preset value, and controlling the rest of the plurality of first light emitting units and the rest of the plurality of second light emitting units to provide the backup light beam as the first light beam.
3. The projection device of claim 1, wherein the laser light source comprises:
a first light source module coupled to the control circuit, the first light source module including a plurality of first light emitting units; and
the second light source module is coupled with the control circuit and comprises a plurality of second light emitting units, the control circuit enables the first light emitting units to provide the light beams as the first light beams, and when the characteristic parameters of the first light emitting units of the light beams do not reach the preset value, the first light emitting units are disabled, and the second light emitting units are enabled to provide the standby light beams.
4. The projection apparatus according to claim 1, wherein the light spots generated by the light beams incident on the light combining means as the first light beam and the light spots generated by the spare light beam incident on the light combining means as the first light beam have the same number and position.
5. The projection apparatus according to claim 1, wherein the control circuit determines whether the characteristic parameters of the light-emitting units providing the first light beam reach the predetermined value according to a feedback signal of voltage or current from the light-emitting units providing the first light beam.
6. The projection apparatus according to claim 1, wherein when the characteristic parameters of the light-emitting units providing the light beam as the first light beam do not reach the predetermined value, the control circuit further controls the projection apparatus to project a display light source selection interface, and the control circuit disables the light-emitting units providing the light beam as the first light beam according to a light source selection command and controls the remaining light-emitting units to provide the backup light beam as the first light beam.
7. The projection apparatus of claim 1, wherein the wavelength conversion device has a first region and a second region, the first region having a fluorescent material for converting the first light beam into the second light beam when the first light beam is irradiated on the first region, and the first light beam directly penetrates the second region or the first light beam is reflected by the second region when the first light beam is irradiated on the second region.
8. A light source system of a projection device is characterized by comprising a laser light source, a control circuit, a wavelength conversion device and a light combination device, wherein:
the laser light source provides a first light beam, the laser light source comprising a plurality of light emitting units:
the control circuit is coupled with the laser light source, controls the plurality of light-emitting units of the part to provide light beams as the first light beams, detects the electrical characteristics of the plurality of light-emitting units providing the light beams, disables the plurality of light-emitting units providing the light beams when the characteristic parameters of the plurality of light-emitting units providing the light beams do not reach preset values, and controls the rest light-emitting units to provide standby light beams as the first light beams;
the wavelength conversion device is configured on a transmission path of the first light beam and converts part of the first light beam into a second light beam; and
the light combining device is configured on a transmission path of the first light beam and the second light beam, and combines the second light beam and the first light beam without wavelength conversion to generate an illumination light beam.
9. The light source system of a projection apparatus according to claim 8, wherein the laser light source includes:
a first light source module coupled to the control circuit, the first light source module including a plurality of first light emitting units; and
a second light source module coupled to the control circuit, the second light source module including a plurality of second light emitting units, the control circuit enabling the plurality of first light emitting units in the first light source module and the plurality of second light emitting units in the second light source module to provide the light beam as the first light beam, disabling the plurality of first light emitting units and the plurality of second light emitting units providing the light beam when characteristic parameters of the plurality of first light emitting units and the plurality of second light emitting units providing the light beam do not reach the preset value, and controlling the rest of the plurality of first light emitting units and the plurality of second light emitting units to provide the backup light beam as the first light beam.
10. The light source system of a projection apparatus according to claim 8, wherein the laser light source includes:
a first light source module coupled to the control circuit, the first light source module including a plurality of first light emitting units; and
the second light source module is coupled with the control circuit and comprises a plurality of second light emitting units, the control circuit enables the first light emitting units to provide the light beams as the first light beams, and when the characteristic parameters of the first light emitting units of the light beams do not reach the preset value, the first light emitting units are disabled, and the second light emitting units are enabled to provide the standby light beams as the first light beams.
11. The light source system of claim 8, wherein the light spots generated by the light beam incident on the light combining device as the first light beam and the light spots generated by the light beam incident on the light combining device as the first light beam have the same number and position.
12. The light source system of claim 8, wherein the control circuit determines whether the characteristic parameters of the light-emitting units providing the first light beam reach the predetermined value according to feedback signals of voltage or current from the light-emitting units providing the first light beam.
13. The light source system of a projection apparatus according to claim 8, wherein the wavelength conversion device has a first region and a second region, the first region having a fluorescent material for converting the first light beam into the second light beam when the first light beam is irradiated on the first region, and the first light beam directly penetrates the second region or the first light beam is reflected by the second region when the first light beam is irradiated on the second region.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019154401A JP7247059B2 (en) | 2018-08-30 | 2019-08-27 | PROJECTION DEVICE, LIGHT SOURCE SYSTEM AND PROJECTION METHOD |
| US16/554,653 US11106120B2 (en) | 2018-08-30 | 2019-08-29 | Projection device and light source system and projection method thereof |
| EP19194388.5A EP3617799B1 (en) | 2018-08-30 | 2019-08-29 | Projection device and light source system and projection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821409890 | 2018-08-30 | ||
| CN2018214098901 | 2018-08-30 |
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| CN209879242U true CN209879242U (en) | 2019-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874000A (en) * | 2018-08-30 | 2020-03-10 | 中强光电股份有限公司 | Projection device, light source system thereof and projection method |
| CN115202140A (en) * | 2021-04-14 | 2022-10-18 | 中强光电股份有限公司 | Projection device and brightness control method thereof |
-
2019
- 2019-06-14 CN CN201920894165.6U patent/CN209879242U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874000A (en) * | 2018-08-30 | 2020-03-10 | 中强光电股份有限公司 | Projection device, light source system thereof and projection method |
| CN110874000B (en) * | 2018-08-30 | 2021-08-31 | 中强光电股份有限公司 | Projection device, light source system thereof and projection method |
| US11106120B2 (en) | 2018-08-30 | 2021-08-31 | Coretronic Corporation | Projection device and light source system and projection method thereof |
| CN115202140A (en) * | 2021-04-14 | 2022-10-18 | 中强光电股份有限公司 | Projection device and brightness control method thereof |
| US11917340B2 (en) | 2021-04-14 | 2024-02-27 | Coretronic Corporation | Projection device and brightness control method thereof |
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