WO2018090764A1 - 光调制装置的启动方法及相关投影设备 - Google Patents

光调制装置的启动方法及相关投影设备 Download PDF

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Publication number
WO2018090764A1
WO2018090764A1 PCT/CN2017/105807 CN2017105807W WO2018090764A1 WO 2018090764 A1 WO2018090764 A1 WO 2018090764A1 CN 2017105807 W CN2017105807 W CN 2017105807W WO 2018090764 A1 WO2018090764 A1 WO 2018090764A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
temperature
central control
control module
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/CN2017/105807
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English (en)
French (fr)
Inventor
杨佳翼
陈红运
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Filing date
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Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2018090764A1 publication Critical patent/WO2018090764A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
    • 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
    • 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
    • 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
    • G03B21/16—Cooling; Preventing overheating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source

Definitions

  • the present invention relates to the field of optical display technologies, and in particular, to a method for starting a light modulation device and a related projection device.
  • the light modulating device is widely used in the fields of projection display and the like, and DMD (Digital Micromirror Device) is widely used as a main spatial light modulating device in a digital projector.
  • the DMD includes a plurality of independent units, each of which includes a mirror, a torsion axis, an electrode, and other microstructures, and the deflection angle of the mirror is controlled by the circuit to achieve modulation of the displayed image.
  • the light modulating device is sensitive to temperature, and if it is started below the starting temperature of the light modulating device, not only can not be normally started, but also damage to the microstructure in the light modulating device is easily affected. The accuracy and lifetime of the light modulation device. This problem limits the promotion of projection display devices equipped with DMD in cold regions.
  • a method for starting a light modulation device applied to a projection device comprising the steps of:
  • preheating light is input through a light source device of a projection device to provide heat to preheat the light modulation device;
  • the light modulation device is activated.
  • the preheating step detecting an ambient temperature at which the light modulation device is located, and when detecting that the ambient temperature of the light modulation device is lower than a first preset temperature, Performing the preheating step; or, before the preheating step, detecting a temperature of the light modulation device, and when detecting that the temperature of the light modulation device is lower than a second preset temperature, performing the pre Hot step.
  • the step of starting the light modulating device is performed; or, when the temperature of the light modulating device is The step of activating the light modulation device is performed by increasing to the second predetermined temperature.
  • the preheating interval for preheating the light modulation device is a fixed value.
  • the light source device includes a plurality of light source units, and in the preheating step, further comprising adjusting a preheating light intensity of the light source device by controlling a number of turns of the plurality of light source units A step of;
  • the light source device includes a light source and a light source driving module for driving the light source, and in the preheating step, further comprising adjusting the driving current by adjusting the driving current supplied by the light source driving module to the light source a step of preheating light intensity of the light source device;
  • the light source device includes a light source and a light source driving module that drives the light source, and the light source includes a plurality of light source units, and in the preheating step, further comprising: adjusting the light source driving module to feed the The step of adjusting the preheating light intensity of the light source device by controlling the driving current of the light source unit and controlling the number of turns of the plurality of light source units.
  • a projection device comprising:
  • a light source device for emitting light
  • a light modulating device configured to receive an image signal, perform an image modulating operation according to the image signal, and the light emitted by the light source device is projected onto the light modulating device, and forms a slave image under the action of the image modulating operation An image light corresponding to the image signal emitted by the light modulation device,
  • a central control module is communicably connected to the light source device, and the central control module is configured to control the light source device to emit preheating light before the light modulation device is turned on, to the light modulation device Provide heat for preheating.
  • the light source device includes a light source and a light source driving module for driving the light source, the light source driving module is connected to the central control module, and the light source comprises a plurality of light source units; Preheating the light modulating device, adjusting a light quantity of the plurality of light source units by the central control module to adjust a light intensity of the preheated light emitted by the light source; and/or, The central control module controls a driving current supplied by the light source driving module to the light source to adjust a light intensity of the preheating light emitted by the light source.
  • the projection device further includes a storage device, and the storage device prestores a preset with a fixed single value.
  • the length of the preheating of the optical modulator by the light source device is the preheating interval.
  • the projection device further includes a temperature detecting device, configured to detect a target temperature and feed back to the central control module, and the central control module determines whether to control the light source device to be emitted according to the target temperature. Preheating light
  • the target temperature is an ambient temperature of the light modulation device or a temperature of the light modulation device.
  • the central control module controls the intensity of the preheated light emitted by the light source device, so that the intensity of the preheated light is positively correlated with the target temperature or the preheating is performed.
  • the light intensity of the light increases stepwise as the target temperature increases.
  • the target temperature is an ambient temperature at which the light modulation device is located
  • the central control module presets a first preset temperature, and when the central control module determines that the target temperature is lower than The first preset temperature
  • the central control module controls the light source device to emit preheating light
  • the target temperature is the temperature of the light modulation device
  • the central control module presets a second preset temperature
  • the central control module determines that the detected target temperature is lower than The second preset temperature ⁇
  • the central control module controls the light source device to emit preheating light.
  • the projection apparatus further includes a storage device, and the storage device prestores a plurality of preheating sections
  • the plurality of preheating enthalpy segments respectively correspond to different initial target temperatures, and the initial target temperature is a target temperature detected by the temperature detecting device for the first time.
  • the projection device further includes a storage device, the light source device includes a light source and a light source driving module, and the light source includes a plurality of light source units.
  • the storage device prestores a plurality of target temperatures, and the plurality of target temperatures respectively correspond to different numbers of the plurality of light source units and/or the driving of the light source driving module to the light source
  • the central control module controls the number of the plurality of light source units corresponding to the target temperature and/or the light source driving according to the target temperature detected by the temperature detecting device.
  • the module supplies a driving current to the light source to adjust a light intensity of the preheating light emitted by the light source; or
  • the central control module controls the number of activations of the plurality of light source units corresponding to the target temperature according to the target temperature detected by the temperature detecting device at the start of the projection device, and/or the
  • the light source driving module supplies a driving current to the light source to adjust the light intensity of the preheating light emitted by the light source.
  • a projection device comprising: [0032] a light source device for emitting light;
  • a light modulating device configured to receive an image signal, perform an image modulating operation according to the image signal, and the light emitted by the light source device is projected onto the light modulating device, and is formed under the action of the image modulating operation An image light corresponding to the image signal emitted by the light modulation device,
  • a light modulation driving module configured to drive the light modulation device
  • a central control module is communicably connected to the optical modulation driving module, the light modulation device includes a semiconductor refrigerator, and the central control module is configured to control a heating function of the semiconductor refrigerator in the The light modulating device is activated to provide heat to the light modulating device for preheating.
  • the projection apparatus further includes a storage device, wherein the storage device prestores a preheating interval of a fixed value, and the heating temperature of the semiconductor refrigerator is the preheating interval.
  • the projection device further includes temperature detecting means for detecting a target temperature and feeding back to the central control module.
  • the target temperature is an ambient temperature of the light modulation device or a temperature of the light modulation device.
  • the target temperature is an ambient temperature of the light modulation device
  • the central control module presets a first preset temperature, and when the central control module determines that the target temperature is low And the heating function of the semiconductor refrigerator is activated; or the target temperature is the temperature of the light modulation device, and the central control module presets the second The preset temperature, when the central control module determines that the detected target temperature is lower than the second preset temperature ⁇ , the heating function of the semiconductor refrigerator is activated.
  • the projection device further includes a storage device, wherein the storage device prestores a plurality of preheating enthalpy segments, wherein the plurality of preheating enthalpy segments respectively correspond to different initial target temperatures, and the initial target temperature Activating a threshold for the projection device, the target temperature detected by the temperature detecting device for the first time; the central control module is further configured to control the semiconductor refrigerator to be in a preheating section corresponding to the initial target temperature Start the heating function.
  • the projection device further includes a fan, and the fan is activated by the heating function of the semiconductor refrigerator; [0043] Alternatively, the fan is activated in the light modulation device.
  • the light source device is configured to emit preheating light in the inter-turn period before the heating function of the semiconductor refrigerator is turned on.
  • the method and the projection device of the light modulating device provided by the present invention preheat the heat of the light modulating device by inputting light energy through the light source device or by heating the semiconductor refrigerator. Further, the light modulating device can be normally started, the service life of the light modulating device and the projection device is prolonged, and the operational reliability is improved.
  • the invention also has the beneficial effects that the light source adopts the structure of the projection device itself to realize the warm-up function of the light modulation device, thereby avoiding an increase in the volume of the projection device and reducing the complexity of the design.
  • FIG. 1 is a schematic diagram of functional modules of a projection device according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of functional modules of a projection device according to a second embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a functional module of a projection apparatus according to a third embodiment of the present invention
  • FIG. 4 is a flowchart of a method for starting a light modulation apparatus provided by the present invention
  • FIG. 5 is a flow chart of a method for starting another light modulation device provided by the present invention.
  • FIG. 6 is a flow chart of a method for starting up another light modulation device provided by the present invention.
  • Temperature detecting device - 108, 208, 308 [0061] storage device one 210
  • one component when one component is considered to be “connected” to another component, it may be directly connected to another component, or may be indirectly connected to another component through a centered component.
  • a first embodiment of the present invention provides a projection apparatus 100 including a light source device 101 , a light modulation device 105 , an optical modulation driving module 106 , a central control module 107 , and a temperature detecting device. 108.
  • the light source device 101 is for emitting light.
  • the light source device 101 includes a light source 11, a light source driving module 13, and a color wheel 17.
  • the light source 11 is for emitting light.
  • the light source driving module 13 is configured to drive the light source 11 .
  • the color wheel 17 is located on a transmission path of light emitted from the light source 11.
  • the light source 11 is an excitation light source for emitting excitation light.
  • the color wheel 17 is a fluorescent color wheel, and the color wheel 17 includes at least one fluorescent light emitting area (not shown).
  • the fluorescent light-emitting region undergoes wavelength conversion under irradiation of the excitation light to generate heat.
  • the light source 11 includes a plurality of light source units 112.
  • the light modulating device 105 is configured to receive an image signal, and perform image modulation operation according to the image signal .
  • the light emitted from the light source device 101 is projected onto the light modulation device 105, and image light corresponding to the image signal emitted from the light modulation device 105 is formed by the image modulation operation.
  • the light modulation device 105 is a digital micromirror device (Digital Micromirror)
  • the light modulating device 105 is a structure of a digital micromotor. In order to ensure the longevity and the working accuracy, the light modulating device 105 has a high requirement on the operating temperature, and the temperature of the light modulating device 105 is usually required to be controlled within a certain operating temperature range. When the temperature of the light modulating device 105 is lower than the minimum operating temperature ⁇ , in other words, the temperature of the light modulating device 105 is lower than the minimum threshold of its operating temperature, the light modulating device 10 is difficult to start and cannot guarantee the operation. Precision.
  • the minimum operating temperature is set to the starting temperature of the inter-light modulation device 105. In the present embodiment, the starting temperature is 5 ° C, and the technical solution protected by the present invention is not limited to this temperature.
  • the light modulation driving module 106 is connected to the light modulation device 105 for driving the light modulation device 105.
  • the central control module 107 is communicatively coupled to the light source driving module 13 and the light modulation driving module 106 for controlling the light source device 101, the light modulating device 105, and the like, so that the light source device The preheating light is emitted before the light modulating device 105 is turned on to preheat the light modulating device 105 to provide heat.
  • the activation of the light modulating device 105 means that the light modulating device 105 initially modulates the incident light and modulates the incident light into image light.
  • the central control module 107 in Fig. 1 is a module. It can be understood that the central control module can also be composed of two or more modules that respectively control the light source and the light modulation device.
  • the projection device 100 further includes other necessary or unnecessary structures, such as a projection lens, etc., which are not described herein.
  • the central control module 107 is pre-set with a first preset temperature.
  • the temperature detecting device 108 is configured to detect a target temperature.
  • the target temperature detected by the temperature detecting device 108 for the first time is the initial target temperature.
  • the temperature detecting device 108 is disposed adjacent to the light modulating device 105 and communicably connected to the central control module 107.
  • the temperature detecting device 108 is configured to detect the ambient temperature of the light modulating device 105 and feed it back to the central control module 107.
  • the central control module 107 determines whether to control the light source device according to the target temperature. 1 01 Preheating light is emitted for intelligent control.
  • the target temperature is an ambient temperature at which the light modulation device 105 is located.
  • the light modulation detected by the temperature detecting device 108 for the first time is the initial target temperature.
  • the temperature detecting device 108 includes at least one temperature sensor disposed in an area adjacent to the light modulating device 105. It can be understood that the temperature detecting device 108 can be disposed on a casing (not shown) of the projection device 100 or disposed adjacent to the light source device 101.
  • the central control module 107 determines that the initial target temperature is lower than the first preset temperature, the central control module 107 activates the light source device 101.
  • the ambient temperature is lower than the initial target temperature ⁇ , and the temperature of the light modulating device 105 is lower than the starting temperature of the light modulating device 105.
  • the stage in which the light source device 101 emits preheated light to preheat the light modulating device 105 is referred to as a preheating phase.
  • the operation of the light modulating device 105 in the operating temperature range, that is, the stage in which the projection device 100 can normally project a display image is referred to as a work phase.
  • the driving current supplied from the light source driving module 13 to the light source 11 is referred to as an operating current.
  • the projection device 100 is activated, and the temperature detecting device 108 detects the initial target temperature and feeds back to the central control module 107.
  • the central control module 107 determines that the initial target temperature is lower than the first preset temperature, and controls the light source device 101 to cause the light source device 101 to emit preheated light, thereby modulating the light.
  • Device 105 is preheated.
  • the central control module 107 controls the The light modulation driving module 106 drives the light modulation device 105 to activate the light modulation device 105.
  • the central control module 107 controls the light source driving module 13 to supply operating current to all of the light source units 112, and the projection device 100 enters the working phase.
  • the light source output preheating light preheats the heat provided by the light modulation device, and utilizes the structure of the projection device itself, thereby avoiding an increase in the volume of the projection device and reducing the complexity of the design.
  • the sudden change in temperature easily causes damage to the microstructure inside the light modulation device 105, by adjusting the light intensity of the light emitted from the light source device 101 during the preheating of the light modulation device 105 (ie, the intensity of the preheated light) to gradually increase the ambient temperature.
  • the central control module 107 controls the driving current supplied by the light source driving module 13 to the light source 11 to adjust the light intensity of the light source 11 .
  • the central control module 107 controls the light source driving module 13 to activate all the light source units 112, and the central control module 107 controls the light source driving module 13 to deliver the The drive current value of the light source unit 112 is gradually increased.
  • the driving current can continuously change the light intensity of the preheating light, which is beneficial to the gentle rise of the temperature of the light modulation device, thereby prolonging its working life.
  • the light intensity of the light source can also be adjusted by controlling the number of turns of the plurality of light source units.
  • the central control module 107 controls the light source driving module 13 to start one by one.
  • the driving current that is controlled by the central control module to control the light source driving module to be sent to the light source and the number of the plurality of light source units controlled by the central control module may be controlled.
  • the length of both is used to adjust the intensity of the preheated light emitted by the light source.
  • the central control module 107 controls the light source unit 112 to be activated one by one, and the central control module 107 controls the driving current value of the light source driving module 13 to be supplied to the light source unit 112 to gradually increase.
  • the value of the driving current is smaller than the value of the operating current, and the light emitted from the light source 11 is prevented from burning the color wheel 17.
  • the central control module 107 controls the intensity of the preheated light emitted by the light source device 101 to make the intensity of the preheated light and the target temperature.
  • the intensity of the preheated light is gradually increased.
  • tl engraved preheated light has a light intensity of II and a target temperature of Tl
  • t2 engraved preheated light has a light intensity of 12 and a target temperature of T2.
  • I2>I1 This approach can cause the light modulator to reach the operating temperature faster.
  • This embodiment is particularly suitable for, but not limited to, a technique in which the light source driving current is a means of adjusting the preheating light intensity.
  • the light source driving current is a means of adjusting the preheating light intensity.
  • the intensity of the preheated light may be increased stepwise as the target temperature increases, ie whenever the temperature of the light modulator or its environment rises to a specific The value increases the intensity of the preheated light to cause the light modulator to reach the operating temperature faster.
  • tl engraved preheated light has a light intensity of II and a target temperature of Tl;
  • t2 engraved preheated light has a light intensity of 12 and a target temperature of T2. ⁇ 2> ⁇ 1 day inch, 12 ⁇ 11, and the target temperature is in the range of ⁇ 1 ⁇ 2, and the preheating light intensity is constant at II.
  • This embodiment is particularly suitable for, but not limited to, a technical solution in which the number of turns of the plurality of light source units is a means for adjusting the intensity of the preheated light.
  • the present embodiment reduces the amount of preheated light to light during heating of the light modulator by controlling the intensity of the preheated light.
  • the damage of the modulator is such that the intensity of the preheated light is less than the intensity of the light source of the projection device.
  • the light intensity of the preheated light is the same as the light intensity of the normal operation of the projection device, and the technical solution of the embodiment eliminates the light intensity control system for the preheated light, so that the equipment cost is further Low and easier to maintain.
  • the color wheel 17 can be a filter color wheel, and the filter color wheel includes at least one filter area.
  • the light source device 101 includes a solid state light source, and the solid state light source is one or two types of a laser diode and a light emitting diode.
  • the solid state light source is short between turns, and is easy to be digitally controlled.
  • the light source device 101 can omit the color wheel 17, and the light source device 101 can emit light of a desired wavelength.
  • the light source device 101 further includes one or more of a UHP lamp, a UHE lamp, and a metal halide lamp.
  • the temperature detecting device 108 may be omitted, that is, the ambient temperature is not detected, and the central control module 107 presets a pre-heating interval of a fixed single value, for example, The central heating module 107 controls the light source driving module 13 to activate the light source 11 to preheat the light modulating device 105 by preheating light, and preheating 10 After the second, the central control module 107 controls the light source driving module 13 to supply an operating current Ie to the light source unit 112 of the light source 11, and the central control module 107 controls the driving unit of the optical modulation driving module 106.
  • the light modulation device 105 can also set the number of the light source units 112 and drive the driving current value of the light source unit 112 to more precisely control the light modulation device 105.
  • the preheating process reduces damage to the light modulating device 105.
  • This method omits the temperature sensing system, which saves cost and process difficulty, and ensures that the light modulation device can obtain a certain degree of warm-up before starting, which is an economical option, together with the projection device of the above embodiment. Covers a wider range of product markets.
  • the temperature detecting device 108 may be disposed on the light modulating device 105 for detecting the temperature of the light modulating device 105 and feeding back to the central control module 107, that is,
  • the target temperature is the temperature of the light modulation device 105.
  • the initial target temperature is a target temperature that is first detected by the temperature detecting device 108.
  • the central control module 107 presets a second preset temperature, and the second preset temperature is the same as the startup temperature of the light modulation device 105.
  • the temperature The detecting device 108 detects the initial target temperature and feeds back to the central control module 107.
  • the central control module 107 determines that the initial target temperature is lower than the second preset temperature ⁇ , and controls the light source device 101 to cause the light source device 101 to emit preheated light, and then the light The modulation device 105 performs preheating.
  • the central control module 107 controls the light modulation driving module 106 to drive the light modulation device 105, thereby starting The light modulation device 105.
  • both the first predetermined temperature and the second predetermined temperature are equal to the lowest startup temperature of the light modulation device.
  • the minimum starting temperature is the lowest temperature at which the light modulating device can be normally started without causing damage, or the lower limit of the operating temperature range indicated for the light modulating device product.
  • a second embodiment of the present invention provides a projection apparatus 200, which includes a light source device 201, a light modulation device 205, a light modulation driving module 206, a central control module 207, and a temperature detecting device. 208 and storage device 210.
  • the second embodiment of the present invention adds a storage device 210 to the first embodiment.
  • the description of the other devices and the corresponding technical solutions can be referred to any of the above descriptions that are not contradictory to the present embodiment.
  • the light source device 201 is for emitting light.
  • the light source device 201 includes a light source 21, a light source driving module 23, and a color wheel 27.
  • the light source 21 is for emitting light.
  • the light source driving module 23 is configured to drive the light source 21 .
  • the color wheel 27 is located on a transmission path of light emitted from the light source 21.
  • the light source 21 is an excitation light source for emitting excitation light.
  • the color wheel 27 is a fluorescent color wheel, and the color wheel 27 includes at least one fluorescent light emitting area (not shown).
  • the fluorescent light-emitting region undergoes wavelength conversion under irradiation of the excitation light to generate heat.
  • the light source 21 includes a plurality of light source units 212.
  • the light modulating device 205 is configured to receive an image signal, and perform image modulation operation according to the image signal. Light emitted from the light source device 201 is projected onto the light modulation device 205, and image light corresponding to the image signal emitted from the light modulation device 205 is formed by the image modulation operation.
  • the light modulation device 205 is a digital micromirror device (Digital Micromirror)
  • the light modulation device 205 is a structure of a digital micromotor. In order to ensure the longevity and the working accuracy, the light modulating device 205 has a high requirement on the operating temperature, and the temperature of the light modulating device 205 is usually required to be controlled within a certain operating temperature range. When the temperature of the light modulating device 205 is lower than the minimum operating temperature ⁇ , the light modulating device 20 is difficult to start and the working accuracy cannot be guaranteed. Will be the most The low operating temperature is set to the starting temperature of the inter-light modulation device 205. In the embodiment, the starting temperature is 5 °C.
  • the light modulation driving module 206 is connected to the light modulation device 205 for driving the light modulation device 205.
  • the central control module 207 is communicatively coupled to the light source driving module 23 and the light modulation driving module 206 for controlling the light source device 201, the light modulation device 205, and the like.
  • the projection device 200 also includes other necessary or unnecessary structures, such as a projection lens, etc., and details are not described herein.
  • the temperature detecting means 208 is for detecting a target temperature.
  • the target temperature detected by the temperature detecting device 208 for the first time is the initial target temperature.
  • the temperature detecting device 208 is disposed adjacent to the light modulating device 205 and communicably connected to the central control module 207.
  • the temperature detecting device 208 is configured to detect the ambient temperature at which the light modulating device 205 is located and to feed back to the central control module 207.
  • the target temperature is the ambient temperature at which the light modulation device 205 is located.
  • the ambient temperature at which the light modulating device 205 is first detected by the temperature detecting device 208 is the initial target temperature.
  • the temperature detecting device 208 can be used to detect the temperature of the light modulating device 205, and then the target temperature is the temperature of the light modulating device 205, and the temperature detecting device 208 first detects the temperature.
  • the temperature of the light modulation device 205 is the initial target temperature.
  • the temperature detecting device 208 includes at least one temperature sensor disposed adjacent to the light modulating device 205. It can be understood that the temperature detecting device 208 can be disposed on a casing (not shown) of the projection device 200 or disposed adjacent to the light source device 201.
  • the central control module 207 determines that the initial target temperature is lower than the first preset temperature, the central control module 207 activates the light source device 201.
  • the ambient temperature is lower than the first predetermined temperature ⁇ , and the temperature of the light modulating device 205 is lower than the starting temperature of the light modulating device 205.
  • a stage in which the light source device 201 emits preheating light to preheat the light modulation device 205 is referred to as a preheating phase.
  • the operation of the light modulating device 205 in the operating temperature range, that is, the stage in which the projection device 200 can normally project a display image is referred to as a work phase.
  • the driving current supplied from the light source driving module 23 to the light source 21 is referred to as an operating current.
  • the projection device 200 further includes a storage device 210.
  • the storage device 210 is connected to the central control module 207 for storing a plurality of initial target temperatures and corresponding preheating segments.
  • the first initial goal The preheating inter-section corresponding to the temperature Al is XI.
  • the temperature detecting device 208 detects the initial target temperature, such as Al, and feeds back to the central control module 207.
  • the central control module 207 determines that the initial target temperature A1 is lower than the first preset temperature ⁇ , and the central control module 207 performs a search comparison in the storage device 210 to confirm the initial target temperature.
  • A1 corresponds to the preheating section XI.
  • the central control module 207 controls the light source device 201 to cause the light source device 201 to emit light, thereby preheating the light modulation device 205. After passing through the preheating section XI, the central control module 207 controls the light modulation driving module 206 to drive the light modulating device 205, thereby starting the light modulating device 205.
  • the storage device 210 stores different initial target temperatures and their corresponding numbers of the light source units 212, but the different initial target temperatures correspond to the same preheating intervals. of.
  • the number of the light source units 212 corresponding to the initial target temperature B1 is N1, and the preheating interval is Y; the number of the light source units 212 corresponding to the initial target temperature B2 is N2, and the preheating time is The segment is Y...
  • the initial target temperature BN corresponds to the number of the light source unit 212 being NN, and the preheating interval is ⁇ .
  • the projection device 200 is activated, and the temperature detecting device 108 first detects the ambient temperature Bl where the light modulation device 205 is located, and feeds back to the central control module 207.
  • the central control module 207 determines that the ambient temperature B1 is lower than the first preset temperature, and the central control module 207 performs a search comparison in the storage device 210 to confirm that the ambient temperature B1 corresponds to
  • the number of the light source units 212 is N1.
  • the central control module 207 controls the light source driving module 206 to activate the N1 light source units 212 to further preheat the light modulation device 205.
  • the central control unit 207 controls the light modulation driving module 206 to drive the light modulation apparatus 205, thereby starting the light modulation apparatus 205. Since only a part of the light source unit 112 is turned on, the impact on the components of the color wheel 27, the light modulation device 205 and other projection devices 200 is small, and the control is simple.
  • the storage device 210 stores a plurality of initial target temperatures and corresponding drive currents respectively sent to the light source unit 212, and the number of the light source units 212 is all, the The enthusiasm segments are all the same.
  • the driving current supplied to the light source unit 212 corresponding to the initial target temperature C1 is II, and the preheating interval is Y; the driving current corresponding to the initial target temperature C2 to the light source unit 21 2 is 12, The enthalpy interval is Y...
  • the ambient temperature CN corresponds to the light source unit 2
  • the drive current IN of 12 is Y in the preheating interval.
  • the temperature detecting device 208 detects the initial target temperature CI and feeds it back to the central control module 207.
  • the central control module 207 determines that the initial target temperature C1 is lower than the first preset temperature, and the central control module 207 performs a search comparison in the storage device 210 to confirm the initial target temperature.
  • the driving current corresponding to C1 corresponding to C1 is II.
  • the central control module 207 controls the light source driving module 23 to supply the driving current II to all the light source units 212, and further preheats the light modulation device 205.
  • the central control module 207 controls the optical modulation driving module 206 to drive the light modulating device 205, thereby starting the light modulating device 205. Since all of the light source units 112 are turned on, and the driving currents supplied to the light source unit 212 are set corresponding to different initial target temperatures, and the preheating turns are the same, the control is simple.
  • the storage device 210 prestores a plurality of target temperatures, and the plurality of target temperatures respectively correspond to different numbers of the plurality of light source units 212 and/or the light source driving.
  • the module 23 delivers a driving current to the light source 21; the central control module 207 controls the plurality of light source units corresponding to the target temperature according to the target temperature detected by the temperature detecting device 208 The number of the opening of the 212 and/or the driving current of the light source driving module 23 to the light source 21 to adjust the light intensity of the preheating light emitted by the light source; or the central control module 207 according to the The temperature detecting device 208 starts the target temperature detected by the projection device 200 at the first time, controls the number of the plurality of light source units 212 corresponding to the target temperature, and/or the light source driving module 23 supplies the The driving current of the light source 21 is to adjust the intensity of the preheating light emitted from the light source 21. Since the actual number of the light source units and/or the light source
  • the preheating interval can be flexibly set according to the relationship between the target temperature, the number of the light source units 212, and the driving current value driving the light source unit 212.
  • the color wheel 27 can be a filter color wheel, and the filter color wheel includes at least one filter area.
  • the light source device 201 includes a solid state light source, and the solid state light source is one or two of a laser diode and a light emitting diode.
  • the light source device 201 can omit the color wheel 27, and the light source device 101 can emit light of a desired wavelength.
  • the light source device 201 further includes one or more of a UHP lamp, a UHE lamp, and a metal halide lamp.
  • a third embodiment of the present invention provides a projection apparatus 300 having a structure substantially the same as that of the projection apparatus 100 of the first embodiment, and includes a light source device 301, a light modulation device 305, and The light modulation driving module 306, the central control module 307 and the temperature detecting device 308 are different in that the light modulating device 305 is provided with a heating function semiconductor refrigerator 3051 which is communicably connected to the central control module 307.
  • the central control module 307 controls the heating function of the semiconductor refrigerator 3051 to be activated before the light modulation device 305 is turned on to provide heat to the light modulation device 305 for preheating.
  • the activation of the light modulating device 105 means that the light modulating device 105 initially modulates the incident light and modulates the incident light into image light.
  • the semiconductor refrigerator 3051 is provided on the back surface of the light modulation device 305.
  • the temperature detecting means 308 is for detecting the target temperature and feeding back to the central control module 307.
  • the target temperature is the ambient temperature of the light modulating device 305.
  • the central control module 307 is pre-set with a first preset temperature.
  • the target temperature is lower than the first preset temperature ⁇
  • the temperature of the light modulation device 305 is lower than the startup temperature thereof
  • the heating function of the central control module controlling the semiconductor refrigerator 30 51 is activated.
  • the target temperature may also be the temperature of the light modulation device.
  • the central control module presets the second preset temperature, and the central control module determines that the detected target temperature is low.
  • the central control module is activated by the heating function of the semiconductor refrigerator. The difference between the two embodiments is only if the target temperature detected by the temperature detecting means is the ambient temperature at which the light modulating device is located or the temperature of the light modulating device itself, and other technical features can be replaced with reference to each other.
  • a stage in which the heating function of the semiconductor refrigerator 3051 is preheated to the light modulation device 305 is referred to as a warm-up phase.
  • the light modulating device 305 operates normally within the operating temperature range, i.e., the stage in which the projection device 300 can normally project a display image is referred to as a work phase.
  • the driving current supplied by the light source driving module 33 to the light source 31 is referred to as an operating current.
  • the projection device 300 further includes a fan 310 communicably connected to the central control module 307.
  • the projection device 300 is activated, and the temperature detecting device 308 detects the target temperature and feeds back to the central control module 307.
  • the central control module 307 determines that the target temperature is lower than the first preset temperature.
  • the heating function of the semiconductor refrigerator 3051 is controlled, and the light modulation device 305 is further preheated.
  • the central control module 307 also controls the activation of the fan 310.
  • the central control module 307 controls the light modulation driving module 306 to drive the light modulating device 305, thereby starting The light modulation device 305.
  • the central control module 307 controls the semiconductor refrigerator 3051 to turn off the heating function and activate the cooling function to cool and cool the light modulation device 305 to ensure that the ambient temperature is within the operating temperature range. The reliability of the operation of the light modulation device 305 is further ensured.
  • the central control module 307 controls the light source driving module 33 to supply an operating current to all of the light source units 312, and the projection device 300 enters a working phase.
  • the design of the semiconductor cooler makes use of the original structure of the projection device, and achieves the functions of preheating and cooling, which saves space, avoids the increase of the volume of the projection device, and reduces the complexity of the design.
  • the semiconductor cooler 30 is controlled during the preheating of the light modulation device 305.
  • the heating power of 51 controls the rate of temperature rise of the light modulating device 305.
  • the central control module 307 can also control the light source device 301 to emit preheating light.
  • the light intensity of the preheating light of the light source device 301 can be adjusted by adjusting the number of turns and/or the driving current of the light source unit 312 of the light source device 301.
  • the target temperature reaches the first preset temperature
  • the cooling function of the fan 310, the semiconductor refrigerator 3051, and the light modulation device 305 may be the same. ⁇ is controlled to start to speed up control.
  • the target temperature reaches the first preset temperature ⁇ , the fan 310, the cooling function of the semiconductor refrigerator 3051, the light modulating device 305,
  • the light source device 301 can be controlled to be activated simultaneously to speed up control.
  • the target temperature reaches the first preset temperature ⁇
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the cooling function of the semiconductor cooler 3051 is After the fan 310 and the light source device 301 are controlled to be turned on, the light modulation device 305 is turned on.
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the central control module 307 controls the Light source device 301
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the fan 310 the light modulation device 305
  • the cooling function of the semiconductor refrigerator 3051 is turned on.
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off, and the fan 310 and the light source device 301 are controlled.
  • the cooling function of the semiconductor refrigerator 3051 and the light modulation device 305 are activated.
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the fan 310 the semiconductor refrigerator 3051
  • the semiconductor refrigerator 3051 After the cooling function and the light modulating device 305 are activated by the same, the light source device 301 is turned on.
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the fan 310 the semiconductor cooler 3051
  • the light source device 301 and the light modulation device 305 are controlled together.
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the fan 310 and the light modulation device 305 are After the startup is started, the cooling function of the light source device 301 and the semiconductor refrigerator 3051 is controlled.
  • the heating function of the semiconductor refrigerator 3051 and the fan 310 are simultaneously activated to speed up the preheating efficiency, and the target temperature reaches the first preset.
  • the temperature is activated, the heating function of the semiconductor refrigerator 3051 is turned off, and the light source device 301 and the cooling function of the semiconductor refrigerator 3051 are controlled to be turned on.
  • the target temperature reaches the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the fan 310 is activated
  • the semiconductor The cooling function of the refrigerator 3051, the light source device 301, and the light modulation device 305 are activated.
  • the target temperature is preheated to reach the first preset temperature
  • the heating function of the semiconductor refrigerator 3051 is turned off
  • the cooling of the semiconductor refrigerator 3051 After the function, the fan 310, and the light modulation device 305 are activated by the same, the light source device 301 is activated.
  • the heating function of the semiconductor refrigerator 3051 is synchronized with the fan 310, and the target temperature is preheated to reach the starting temperature, the semiconductor The heating function of the refrigerator 30 51 is turned off, the cooling function of the semiconductor refrigerator 3051 is turned on, and then the light modulation device 305 is turned on.
  • the heating function of the semiconductor refrigerator 3051 is activated, and the target temperature is preheated to reach the first preset temperature, and the semiconductor refrigerator 3051 is The heating function is turned off, and the fan 310, the cooling function of the semiconductor refrigerator 3051, the light modulating device 305, and the light source device 301 are sequentially activated.
  • the color wheel 37 can be a filter color wheel, and the filter color wheel includes at least one filter area for passing light of a desired wavelength.
  • the light source device 301 includes a solid state light source, and the solid state light source is one or both of a laser diode and a light emitting diode.
  • the light source device 301 can omit the color wheel 37, and the light source device 301 can emit light of a desired wavelength.
  • the light source device 301 further includes one or more of a UHP lamp, a UHE lamp, and a metal halide lamp.
  • the temperature detecting device 308 may be omitted, that is, the ambient temperature of the light modulating device 305 is not detected, and the projection device includes a storage device, and the storage device is pre-stored with a fixed single value.
  • the heating enthalpy of the semiconductor refrigerator is the preheating enthalpy.
  • the preheating interval is 10 seconds, and the central control module 307 controls the semiconductor refrigerator 3051 to perform a heating function to preheat the light modulation device 305.
  • the central control module 307 controls the light source driving module 13 to supply an operating current Ie to the light source unit 312 of the light source 31, and the central control module 307 controls the optical modulation driving module 306 to drive the light modulation.
  • Device 305 After preheating for 10 seconds, The central control module 307 controls the light source driving module 13 to supply an operating current Ie to the light source unit 312 of the light source 31, and the central control module 307 controls the optical modulation driving module 306 to drive the light modulation.
  • Device 305 controls the light source driving module 13 to supply an operating current Ie to the light source unit 312 of the light source 31, and the central control module 307 controls the optical modulation driving module 306 to drive the light modulation.
  • the projection device includes a storage device and a temperature detecting device, and the storage device prestores a plurality of preheating segments, the plurality of preheating segments respectively corresponding to different initial targets. Temperature, when the projection device is turned on, the target temperature detected by the temperature detecting device for the first time is the initial target temperature.
  • the central control module obtains the initial target temperature through the temperature detecting device, and correspondingly searches for the preheating enthalpy interval pre-stored in the storage device, thereby controlling the semiconductor refrigerator to start the heating function for the light in the preheating enthalpy segment.
  • the modulation device is preheated.
  • the technical solution can determine the preheating time with different temperatures, and the control of the preheating is more precise, which is beneficial to the extension of the life of the equipment.
  • the temperature detecting device 308 can be used to detect the temperature of the light modulating device 305, and the light modulating device 305 is disposed on the light modulating device 305 to detect The temperature of the light modulation device 305 is fed back to the central control module 307. That is, the target temperature is the temperature of the light modulation device 305; the initial target temperature is that the projection device 100 is activated, and the temperature of the light modulation device 305 is the light modulation device 305 that is first detected by the temperature detecting device 308. temperature.
  • the central control module 307 presets a second preset temperature, and the second preset temperature is the same as the starting temperature of the light modulation device 305.
  • the projection device 300 is activated, and the temperature detecting device 308 detects the temperature of the light modulation device 305 and feeds back to the central control module 307.
  • the central control module 307 determines that the temperature of the light modulating device 305 is lower than the second preset temperature ⁇ , and controls the light source device 301 to cause the light source device 301 to emit light, and then the light The modulation device 305 performs preheating.
  • the central control module 307 controls the optical modulation driving module 306 to drive the light modulating device 305, and further The light modulation device 305 is activated.
  • the projection apparatus includes a storage device, and the storage device prestores a plurality of preheating enthalpy segments, wherein the plurality of preheating enthalpy segments respectively correspond to different initial target temperatures, the initial The target temperature is the target temperature detected by the temperature detecting device when the projection device is activated, and the central control module is further configured to control the preheating segment corresponding to the initial target temperature of the semiconductor refrigerator.
  • the internal heating function is described.
  • the present invention also provides a method for starting a light modulation device, which is applied to a projection device. Referring to FIG. 4, the method includes the following steps:
  • Step 401 Preheating light is input through a light source device of the projection device to provide heat to preheat the light modulation device.
  • Step 402 Start the light modulation device.
  • the preheating interval for preheating the light modulation device is a fixed value.
  • the technical solution can avoid storing too much data in the memory of the projection device, which simplifies the programming; and setting the preheating interval of the fixed value is beneficial to avoid the preheating interval and the temperature of the light modulation device caused by the program error. Damage to the light modulation device caused by mismatch.
  • the method for starting the light modulation device includes the following specific steps:
  • Step 501 Temperature detection: when it is detected that the ambient temperature of the light modulation device is lower than the first preset temperature, performing the preheating step;
  • the preheating interval is set according to the detected ambient temperature of the light modulation device.
  • Step 502 Preheating light is input through a light source device of the projection device to provide heat to preheat the light modulation device to increase the temperature of the light modulation device to a startup temperature of the light modulation device.
  • Step 503 Start the light modulation device.
  • the method for starting the light modulation device includes the following specific steps:
  • Step 601 temperature detection: when it is detected that the temperature of the light modulation device is lower than the second preset temperature ⁇ , the preheating step is performed.
  • Step 602 Heating the semiconductor refrigerator to provide heat to preheat the light modulation device to increase the temperature of the light modulation device to a startup temperature of the light modulation device.
  • the preheating interval is set in accordance with the temperature at which the light modulation device is detected.
  • Step 603 the light modulation device is activated.
  • the light source device includes a plurality of light source units, and in the preheating step, further comprising adjusting the preheating light intensity of the light source device by controlling the number of turns of the plurality of light source units step.
  • the light source device includes a light source and a light source driving module that drives the light source.
  • the light source device further includes adjusting a light source device by adjusting a driving current supplied from the light source driving module to the light source. The step of preheating the light intensity.
  • the light source device includes a light source and a light source driving module that drives the light source, and the light source includes a plurality of light source units.
  • the light source further includes the same light source and is driven by the light source driving module. The step of adjusting the preheating light intensity of the light source device by the driving current to the light source unit and the number of turns of the plurality of light source units.
  • the present invention provides a method for starting a light modulating device and a projection device, which heats the light modulating device by inputting light energy through a light source device or by providing heat to the light modulating device. Further, the light modulating device can be normally started, which prolongs the service life of the light modulating device and the projection device and improves the operational reliability.

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Abstract

一种投影设备（100）及光调制设备的启动方法，投影设备（100）包括光源装置（101）、光调制装置（105）、光调制驱动模组（106）及中控模组（107）。光源装置（101）用以出射光，光调制装置（105）用于接收图像信号并出射与图像信号对应的图像光，光调制驱动模组（106）用于驱动光调制装置（101），中控模组（107）与光源装置（101）及光调制驱动模组（106）通信连接。光源装置（101）在光调制装置（105）开启前出射预热光以对光调制装置（105）提供热量进行预热。

Description

说明书 发明名称：光调制装置的启动方法及相关投影设备 技术领域
[0001] 本发明涉及光学显示技术领域， 特别涉及一种光调制装置的启动方法及相关投 影设备。
背景技术
[0002] 光调制装置为广泛应用于投影显示等领域， 其中， DMD (Digital Micromirror Device, 数字微镜装置） 作为主要的空间光调制装置被广泛的用于数字投影机中 。 DMD包括多个独立单元， 每个独立单元包括反射镜、 扭转轴、 电极及其它微 结构， 通过电路控制反射镜的偏转角度， 从而实现对显示图像的调制。
技术问题
[0003] 所述光调制装置对温度较为敏感， 其若在低于所述光调制装置的启动温度进行 启动， 不但不能正常启动， 还容易对所述光调制装置中的微结构造成损坏， 影 响所述光调制装置的精度及寿命。 该问题限制了配置有 DMD的投影显示装置在 寒冷地区的推广。
问题的解决方案
技术解决方案
[0004] 为解决上述问题， 有必要提供一种光调制装置的启动方法及相关投影设备。
[0005] 一种应用于投影设备的光调制装置的启动方法， 其包括步骤：
[0006] 预热： 通过投影设备的光源装置输入预热光以提供热量给所述光调制装置进行 预热；
[0007] 启动所述光调制装置。
[0008] 进一步地， 在所述预热步骤前， 检测所述光调制装置所处的环境温度， 当检测 到所述光调制装置的所处的环境温度低于第一预设温度吋， 则执行所述预热步 骤； 或者， 在所述预热步骤前， 检测所述光调制装置的温度， 当检测到所述光 调制装置的温度低于第二预设温度吋， 则执行所述预热步骤。
[0009] 进一步地， 依据检测到的所述光调制装置所处的环境温度设置预热吋间段； 或 者， 依据检测到所述光调制装置的温度设置预热吋间段。
[0010] 进一步地， 当所述光调制装置所处的环境温度提高至所述第一预设温度吋， 执 行所述启动所述光调制装置的步骤； 或者， 当所述光调制装置的温度提高至所 述第二预设温度吋， 执行所述启动所述光调制装置的步骤。
[0011] 进一步地， 所述预热步骤中， 对所述光调制装置进行预热的预热吋间段是固定 值。
[0012] 进一步地， 所述光源装置包括多个光源单元， 在所述预热步骤中， 还包括通过 控制所述多个光源单元的幵启数量来调节所述光源装置的预热光光强的步骤；
[0013] 或者， 所述光源装置包括光源及驱动光源的光源驱动模组， 在所述预热步骤中 ， 还包括通过调节所述光源驱动模组输送给所述光源的驱动电流来调节所述光 源装置的预热光光强的步骤；
[0014] 或者， 所述光源装置包括光源及驱动光源的光源驱动模组， 所述光源包括多个 光源单元， 在所述预热步骤中， 还包括通过调节所述光源驱动模组输送给所述 光源单元的驱动电流以及控制所述多个光源单元的幵启数量来调节所述光源装 置预热光光强的步骤。
[0015] 一种投影设备， 其包括：
[0016] 光源装置， 用以出射光；
[0017] 光调制装置， 用于接收图像信号， 根据所述图像信号进行图像调制运作， 所述 光源装置出射的光投射至所述光调制装置上， 在所述图像调制运作的作用下形 成从所述光调制装置出射的与所述图像信号对应的图像光，
[0018] 中控模组， 与所述光源装置通信连接， 所述中控模组用于控制所述光源装置在 所述光调制装置幵启前出射预热光， 以对所述光调制装置提供热量进行预热。
[0019] 进一步地， 所述光源装置包括光源及用于驱动所述光源的光源驱动模组， 所述 光源驱动模组与所述中控模组连接， 所述光源包括多个光源单元； 在对所述光 调制装置进行预热吋， 通过所述中控模组控制所述多个光源单元的幵启数量来 调节所述光源出射的预热光的光强； 和 /或， 通过所述中控模组控制所述光源驱 动模组输送给所述光源的驱动电流来调节所述光源出射的预热光的光强。
[0020] 进一步地， 所述投影设备还包括存储装置， 所述存储装置预存固定单一值的预 热吋间段， 所述光源装置对所述光调制器进行预热的吋长为所述预热吋间段。
[0021] 进一步地， 所述投影设备还包括温度检测装置， 用于检测目标温度并反馈给所 述中控模组， 所述中控模组根据所述目标温度判断是否控制所述光源装置出射 预热光；
[0022] 所述目标温度为所述光调制装置的环境温度或者所述光调制装置的温度。
[0023] 进一步地， 所述中控模组控制所述光源装置出射的预热光的光强， 以使所述预 热光的光强与所述目标温度呈正相关关系或者使所述预热光的光强随所述目标 温度的增加呈阶梯式增大。
[0024] 进一步地， 所述目标温度为所述光调制装置所处的环境温度， 所述中控模组预 设第一预设温度， 当所述中控模组判断所述目标温度低于所述第一预设温度吋
， 则所述中控模组控制幵启所述光源装置出射预热光；
[0025] 或者， 所述目标温度为所述光调制装置的温度， 所述中控模组预设第二预设温 度， 当所述中控模组判断检测到的所述目标温度低于所述第二预设温度吋， 则 所述中控模组控制幵启所述光源装置出射预热光。
[0026] 进一步地， 所述投影设备还包括存储装置， 所述存储装置预存多个预热吋间段
， 所述多个预热吋间段分别对应不同的初始目标温度， 所述初始目标温度为所 述投影设备启动吋， 所述温度检测装置初次检测到的目标温度。
[0027] 进一步地， 所述投影设备还包括存储装置， 所述光源装置包括光源及光源驱动 模组， 所述光源包括多个光源单元，
[0028] 所述存储装置预存有多个目标温度， 所述多个目标温度分别对应不同的所述多 个光源单元的幵启数量和 /或所述光源驱动模组输送给所述光源的驱动电流； [0029] 所述中控模组根据所述温度检测装置实吋检测到的目标温度， 实吋控制该目标 温度对应的所述多个光源单元的幵启数量和 /或所述光源驱动模组输送给所述光 源的驱动电流， 以调节所述光源出射的预热光的光强； 或者
[0030] 所述中控模组根据所述温度检测装置在所述投影设备启动吋初次检测到的目标 温度， 控制该目标温度对应的所述多个光源单元的幵启数量和 /或所述光源驱动 模组输送给所述光源的驱动电流， 以调节所述光源出射的预热光的光强。
[0031] 一种投影设备， 其包括： [0032] 光源装置， 用以出射光；
[0033] 光调制装置， 用于接收图像信号， 根据所述图像信号进行图像调制运作， 所述 光源装置出射的光投射至所述光调制装置上， 在所述图像调制运作的作用下形 成从所述光调制装置出射的与所述图像信号对应的图像光，
[0034] 光调制驱动模组， 用于驱动所述光调制装置，
[0035] 中控模组， 与所述光调制驱动模组通信连接， 所述光调制装置包括半导体制冷 器， 所述中控模组用于控制所述半导体制冷器的制热功能在所述光调制装置幵 启前被幵启以对所述光调制装置提供热量进行预热。
[0036] 进一步地， 所述投影设备还包括存储装置， 所述存储装置预存固定单一值的预 热吋间段， 所述半导体制冷器的制热吋长为所述预热吋间段。
[0037] 进一步地， 所述投影设备还包括温度检测装置， 用于检测目标温度并反馈给所 述中控模组，
[0038] 所述目标温度为所述光调制装置的环境温度或者所述光调制装置的温度。
[0039] 进一步地， 所述半导体制冷器在达到所述目标温度吋， 所述半导体制冷器的制 热功能被关闭。
[0040] 进一步地， 所述目标温度为所述光调制装置所处的环境温度吋， 所述中控模组 预设第一预设温度， 当所述中控模组判断所述目标温度低于所述第一预设温度 吋， 则所述半导体制冷器的制热功能被幵启； 或者， 所述目标温度为所述光调 制装置的温度吋， 所述中控模组预设第二预设温度， 当所述中控模组判断检测 到的所述目标温度低于所述第二预设温度吋， 则所述半导体制冷器的制热功能 被幵启。
[0041] 进一步地， 所述投影设备还包括存储装置， 所述存储装置预存多个预热吋间段 ， 所述多个预热吋间段分别对应不同的初始目标温度， 所述初始目标温度为所 述投影设备启动吋， 所述温度检测装置初次检测到的目标温度； 所述中控模组 还用于控制所述半导体制冷器在所述初始目标温度对应的预热吋间段内幵启所 述制热功能。
[0042] 进一步地， 所述投影设备还包括风扇， 所述风扇在所述半导体制冷器的制热功 能在幵启吋所幵启； [0043] 或者， 所述风扇在所述光调制装置被幵启吋幵启。
[0044] 进一步地， 所述光源装置在所述半导体制冷器的制热功能幵启吋至被关闭前的 吋间段内被幵启出射预热光。
[0045]
发明的有益效果
有益效果
[0046] 与现有技术相比较， 本发明提供的光调制装置的启动方法及投影设备， 通过光 源装置输入光能转或通过半导体制冷器制热对所述光调制装置提供热量进行预 热， 进而能够使所述光调制装置正常启动， 延长了所述光调制装置及所述投影 设备的使用寿命并提高了工作可靠性。
[0047] 本发明的有益效果还在于， 通过光源利用了投影设备本身的结构实现对光调制 装置的预热功能， 避免了投影设备体积的增大、 减少了设计的复杂度。
对附图的简要说明
附图说明
[0048] 图 1是本发明第一实施方式提供的投影设备的功能模组示意图；
[0049] 图 2是本发明第二实施方式提供的投影设备的功能模组示意图；
[0050] 图 3是本发明第三实施方式提供的投影设备的功能模组示意图； 图图 4是本发明 提供的光调制装置的启动方法流程图；
[0051] 图 5是本发明提供的另一光调制装置的启动方法流程图；
[0052] 图 6是本发明提供的又一光调制装置的启动方法流程图。
[0053] 主要元件符号说明
[0054] 投影设备—— 100、 200、 300
[0055] 光源装置—— 101、 201、 301
[0056] 光调制装置—— 105、 205、 305
[0057] 半导体制冷器—— 3051
[0058] 光调制驱动模组—— 106、 206、 306
[0059] 中控模组—— 107、 207、 307
[0060] 温度检测装置—— 108、 208、 308 [0061] 存储装置一 210
[0062] 光源—— 11、 21、 31
[0063] 光源驱动模组—— 13、 23、 33
[0064] 色轮—— 17、 27、 37
[0065] 光源单元—— 112、 212、 312
[0066] 如下具体实施方式将结合上述附图进一步说明本发明。
实施该发明的最佳实施例
本发明的最佳实施方式
[0067] 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。 在不冲突的情 况下， 下述的实施例及实施例中的特征可以相互组合。
[0068] 需要说明的是， 在本发明中， 当一个组件被认为是与另一个组件 "相连 "吋， 它 可以是与另一个组件直接相连， 也可以是通过居中组件与另一个组件间接相连
[0069] 除非另有定义， 本文所使用的所有的技术和科学术语与属于本发明的技术领域 的技术人员通常理解的含义相同。 本文中在本发明的说明书中所使用的术语只 是为了描述具体的实施例的目的， 不是旨在于限制本发明。
[0070] 请参阅图 1所示， 本发明第一实施方式提供一种投影设备 100， 其包括光源装置 101、 光调制装置 105、 光调制驱动模组 106、 中控模组 107及温度检测装置 108。
[0071] 所述光源装置 101用于出射光。 所述光源装置 101包括光源 11、 光源驱动模组 13 及色轮 17。 所述光源 11用于出射光。 所述光源驱动模组 13用以驱动所述光源 11 。 所述色轮 17位于所述光源 11出射的光的传输路径上。 本实施方式中， 所述光 源 11为激发光源， 用于出射激发光。 所述色轮 17为荧光色轮， 所述色轮 17上包 括至少一个荧光发光区域 （图未示） 。 所述荧光发光区域在所述激发光的照射 下进行波长转换产生热量。 所述光源 11包括多个光源单元 112。
[0072] 所述光调制装置 105用于接收图像信号， 根据所述图像信号进行图像调制运作 。 所述光源装置 101出射的光投射至所述光调制装置 105上， 在所述图像调制运 作的作用下形成从所述光调制装置 105出射的与所述图像信号对应的图像光。 本实施方式中， 所述光调制装置 105为数字微镜元件 （Digital Micromirror
Device, DMD) 。 所述光调制装置 105为一种数字微电机的结构。 为保证寿命及 工作精度， 所述光调制装置 105对工作温度的要求高， 通常要求所述光调制装置 105的温度控制在一定工作温度范围之内。 当所述光调制装置 105的温度低于最 低工作温度吋， 换句话说， 所述光调制装置 105的温度低于其工作温度的最小阀 值， 所述光调制装置 10难以启动以及无法保证工作精度。 将所述最低工作温度 设为所述间光调制装置 105的启动温度。 本实施方式中， 所述启动温度为 5°C， 当 然本发明保护的技术方案不限于此温度。
[0074] 所述光调制驱动模组 106与所述光调制装置 105连接， 用于驱动所述光调制装置 105。
[0075] 所述中控模组 107与所述光源驱动模组 13及所述光调制驱动模组 106通信连接， 用于控制所述光源装置 101及所述光调制装置 105等， 使得光源装置 101在光调制 装置 105幵启前出射预热光， 以对光调制装置 105提供热量进行预热。 此处， 光 调制装置 105的幵启是指光调制装置 105幵始对入射光进行调制， 将入射光调制 成为图像光。 图 1中的中控模组 107为一个模块， 可以理解， 中控模组也可以为 分别控制光源和光调制装置的两个或多个模块组成。
[0076] 所述投影设备 100还包括其它必要或非必要结构， 如投影镜头等， 在此不作赘 述。
[0077] 所述中控模组 107预设有第一预设温度。
[0078] 所述温度检测装置 108用于检测目标温度。 将所述投影设备 100启动吋， 所述温 度检测装置 108初次检测到的目标温度为初始目标温度。 本实施方式中， 所述温 度检测装置 108邻近所述光调制装置 105设置并与所述中控模组 107通信连接。 所 述温度检测装置 108用于检测所述光调制装置 105所处的环境温度并定吋或实吋 地回馈给所述中控模组 107， 中控模组 107根据目标温度判断是否控制光源装置 1 01出射预热光， 以实现智能化控制。 在本实施方式中， 所述目标温度为所述光 调制装置 105所处的环境温度。 所述温度检测装置 108初次检测到的所述光调制 装置 105所处的环境温度为初始目标温度。
[0079] 所述温度检测装置 108包括至少一个设置于所述光调制装置 105邻近区域的温度 传感器。 可以理解， 所述温度检测装置 108可以设置于所述投影设备 100的机壳 (图未示） ， 或者设置邻近所述光源装置 101设置。 当所述中控模组 107判断所 述初始目标温度低于所述第一预设温度吋， 所述中控模组 107则幵启所述光源装 置 101。 所述环境温度低于所述初始目标温度吋， 所述光调制装置 105的温度低 于所述光调制装置 105的启动温度。
[0080] 将所述光源装置 101出射预热光对所述光调制装置 105进行预热的阶段称为预热 阶段。 将所述光调制装置 105在工作温度范围内正常运作， 即所述投影设备 100 能够正常进行投影显示图像的阶段称为工作阶段。 设在所述工作阶段， 所述光 源驱动模组 13输送给所述光源 11的驱动电流称为工作电流。
[0081] 启动所述投影设备 100吋， 所述温度检测装置 108检测所述初始目标温度并回馈 给所述中控模组 107。 所述中控模组 107判断所述初始目标温度低于所述第一预 设温度吋， 控制幵启所述光源装置 101以使所述光源装置 101出射预热光， 进而 对所述光调制装置 105进行预热。 当所述温度检测装置 108检测到所述目标温度 上升到所述第一预设温度， 即所述光调制装置 105的温度提高至所述启动温度吋 ， 所述中控模组 107控制所述光调制驱动模组 106驱动所述光调制装置 105， 进而 启动所述光调制装置 105。 所述中控模组 107控制所述光源驱动模组 13向全部光 源单元 112输送工作电流， 所述投影设备 100进入所述工作阶段。 通过光源输出 预热光对光调制装置提供热量进行预热， 利用了投影设备本身的结构， 避免了 投影设备体积的增大、 减少了设计的复杂度。
[0082] 由于温度的骤变容易对所述光调制装置 105内部的微结构造成损伤， 因此， 在 预热所述光调制装置 105的过程中， 通过调节所述光源装置 101出射光的光强 （ 即预热光的光强） 来逐渐提高所述环境温度。
本实施方式中， 通过所述中控模组 107控制所述光源驱动模组 13输送给所述光 源 11的驱动电流来调节所述光源 11的光强。 例如， 在预热阶段， 所述中控模组 1 07控制所述光源驱动模组 13启动全部所述光源单元 112， 所述中控模组 107控制 所述光源驱动模组 13输送给所述光源单元 112的驱动电流值逐渐增加。 通过控制 驱动电流， 可以连续的改变预热光的光强， 有利于光调制装置的温度平缓的上 升， 从而延长其工作寿命。
[0084] 可以理解， 还可以通过控制多个光源单元的幵启数量来调节光源的光强， 在预 热阶段， 所述中控模组 107控制所述光源驱动模组 13逐个幵启所述光源单元 112 。 通过控制光源单元的幵启数量， 能够避免电流调节的复杂程度， 可以更精确 的控制预热光的光强。
[0085] 可以理解， 还可以将通过所述中控模组控制所述光源驱动模组输送给所述光源 的驱动电流与通过所述中控模组控制所述多个光源单元的幵启数量相结合， 兼 两者之长来调节光源出射的预热光的光强。 所述中控模组 107控制逐个幵启所述 光源单元 112， 并所述中控模组 107控制所述光源驱动模组 13输送给所述光源单 元 112的驱动电流值逐渐增加。 所述驱动电流的值小于所述工作电流的值， 避免 所述光源 11出射的光烧毁所述色轮 17。
[0086] 在本发明的另外的实施方式中， 所述中控模组 107控制所述光源装置 101出射的 预热光的光强， 以使所述预热光的光强与所述目标温度呈正相关关系， 即随着 光调制器或其环境的温度的上升， 逐渐提高预热光的光强。 例如， tl吋刻预热光 的光强为 II， 目标温度为 Tl ; t2吋刻预热光的光强为 12， 目标温度为 T2。 当 Τ2〉 Tl吋， 总有 I2〉I1。 该方式可以促使光调制器更快的达到工作温度， 该实施方式 尤其适于但不限于以光源驱动电流为调节预热光光强的手段的技术方案。 同吋 ， 当目标温度较低吋， 目标温度与光调制器的启动温度的温差大， 预热光过强 会导致升温速率过快， 可能对光调制器产生损伤。
[0087] 在一个变形的实施方式中， 还可以使所述预热光的光强随所述目标温度的增加 呈阶梯式增大， 即每当光调制器或其环境的温度上升到一个特定值， 就增加预 热光的光强， 以促使光调制器更快的达到工作温度。 例如， tl吋刻预热光的光强 为 II， 目标温度为 Tl ; t2吋刻预热光的光强为 12， 目标温度为 T2。 Τ2〉Τ1日寸， 12 〉11， 且在目标温度处于 Τ1~Τ2区间内吋， 预热光光强恒定为 II。 该实施方式尤 其适于但不限于以复数光源单元的幵启数量为调节预热光光强的手段的技术方 案。
[0088] 本实施方式通过控制预热光的光强来减少预热光在对光调制器加热过程中对光 调制器的损伤， 使得预热光的光强小于投影设备正常工作吋光源的光强。 在本 发明的另一实施方式中， 预热光的光强与投影设备正常工作吋的光强相同， 该 实施方式的技术方案省去了对预热光的光强控制系统， 使得设备成本更低、 更 容易维护。
[0089] 可以理解， 所述色轮 17可以为滤光色轮， 所述滤光色轮至少包括一个滤光区域
， 用于通过所需波长的光。
[0090] 可以理解， 所述光源装置 101包括固态光源， 所述固态光源为激光二极管、 发 光二极管的一种或两种， 固态光源启动吋间短， 易于数字化控制。
[0091] 可以理解， 所述光源装置 101可以省略所述色轮 17， 所述光源装置 101可以出射 所需波长的光。
[0092] 可以理解， 所述光源装置 101还包括 UHP灯、 UHE灯、 金属卤素灯中的一种或 多种。
[0093] 在本发明的另一实施方式中， 所述温度检测装置 108可以省略， 即不检测环境 温度， 所述中控模组 107预设固定单一值的预热吋间段， 例如， 所述预热吋间段 为 10秒， 所述中控模组 107控制所述光源驱动模组 13幵启所述光源 11以预热光对 所述光调制装置 105进行预热， 在预热 10秒后， 所述中控模组 107控制所述光源 驱动模组 13向所述光源 11的光源单元 112输送工作电流 Ie， 所述中控模组 107控制 所述光调制驱动模组 106驱动所述光调制装置 105; 当然， 还可以在所述中控模 组 107设置幵启光源单元 112的数量、 驱动所述光源单元 112的驱动电流值， 以更 加精准控制对所述光调制装置 105的预热过程， 减少对所述光调制装置 105的损 伤。 该方式省略了温度传感系统， 节约了成本和工艺难度， 同吋保证了光调制 装置能够在启动前得到一定程度的预热， 是一种经济型的选择， 与上述实施方 式的投影设备一同覆盖了更宽的产品市场范围。
[0094] 在一变更实施例中， 所述温度检测装置 108可以设置于所述光调制装置 105上， 用于检测所述光调制装置 105的温度并反馈给所述中控模组 107， 即所述目标温 度为所述光调制装置 105的温度。 所述初始目标温度为所述温度检测装置 108初 次检测到的目标温度。 所述中控模组 107预设一第二预设温度， 所述第二预设温 度与所述光调制装置 105的启动温度相同。 启动所述投影设备 100吋， 所述温度 检测装置 108检测所述初始目标温度并回馈给所述中控模组 107。 所述中控模组 1 07判断所述初始目标温度低于所述第二预设温度吋， 控制幵启所述光源装置 101 以使所述光源装置 101出射预热光， 进而对所述光调制装置 105进行预热。 当所 述温度检测装置 108检测到所述目标温度上升到所述第二预设温度吋， 所述中控 模组 107控制所述光调制驱动模组 106驱动所述光调制装置 105， 进而启动所述光 调制装置 105。
[0095] 在本发明的一个实施方式中， 第一预设温度和第二预设温度都等于光调制装置 的最低启动温度。 最低启动温度为光调制装置的能够正常启动且不会造成损坏 的最低温度， 或者为光调制装置产品标注的工作温度范围的下限值。
[0096] 请参阅图 2所示， 本发明第二实施方式提供一种投影设备 200， 其包括光源装置 201、 光调制装置 205、 光调制驱动模组 206、 中控模组 207、 温度检测装置 208及 存储装置 210。 本发明第二实施方式相对于第一实施方式增加了存储装置 210， 其他装置的描述及相应的技术方案可以参照上述任意与本实施方式不矛盾的描 述。
[0097] 所述光源装置 201用于出射光。 所述光源装置 201包括光源 21、 光源驱动模组 23 及色轮 27。 所述光源 21用于出射光。 所述光源驱动模组 23用以驱动所述光源 21 。 所述色轮 27位于所述光源 21出射的光的传输路径上。 本实施方式中， 所述光 源 21为激发光源， 用于出射激发光。 所述色轮 27为荧光色轮， 所述色轮 27上包 括至少一个荧光发光区域 （图未示） 。 所述荧光发光区域在所述激发光的照射 下进行波长转换产生热量。 所述光源 21包括多个光源单元 212。
[0098] 所述光调制装置 205用于接收图像信号， 根据所述图像信号进行图像调制运作 。 所述光源装置 201出射的光投射至所述光调制装置 205上， 在所述图像调制运 作的作用下形成从所述光调制装置 205出射的与所述图像信号对应的图像光。
[0099] 本实施方式中， 所述光调制装置 205为数字微镜元件 （Digital Micromirror
Device, DMD) 。 所述光调制装置 205为一种数字微电机的结构。 为保证寿命及 工作精度， 所述光调制装置 205对工作温度的要求高， 通常要求所述光调制装置 205的温度控制在一定工作温度范围之内。 当所述光调制装置 205的温度低于最 低工作温度吋， 所述光调制装置 20难以启动以及无法保证工作精度。 将所述最 低工作温度设为所述间光调制装置 205的启动温度。 本实施方式中， 所述启动温 度为 5°C。
[0100] 所述光调制驱动模组 206与所述光调制装置 205连接， 用于驱动所述光调制装置 205。
[0101] 所述中控模组 207与所述光源驱动模组 23及所述光调制驱动模组 206通信连接， 用于控制所述光源装置 201及所述光调制装置 205等。 所述投影设备 200还包括其 它必要或非必要结构， 如投影镜头等， 在此不作赘述。
[0102] 所述温度检测装置 208用于检测目标温度。 将所述投影设备 200启动吋， 所述温 度检测装置 208初次检测到的目标温度为初始目标温度。 本实施方式中， 所述温 度检测装置 208邻近所述光调制装置 205设置并与所述中控模组 207通信连接。 所 述温度检测装置 208用于检测所述光调制装置 205所处的环境温度并定吋或实吋 地回馈给所述中控模组 207。 所述目标温度为所述光调制装置 205所处的环境温 度。 所述温度检测装置 208初次检测到的所述光调制装置 205所处的环境温度为 初始目标温度。 可以理解， 所述温度检测装置 208可以用于检测所述光调制装置 205的温度， 则所述目标温度为所述光调制装置 205的温度， 所述温度检测装置 2 08初次检测到的所述光调制装置 205的温度为初始目标温度。
[0103] 所述温度检测装置 208包括至少一个设置于所述光调制装置 205邻近区域的温度 传感器。 可以理解， 所述温度检测装置 208可以设置于所述投影设备 200的机壳 (图未示） ， 或者设置邻近所述光源装置 201设置。 当所述中控模组 207判断所 述初始目标温度低于所述第一预设温度吋， 所述中控模组 207则幵启所述光源装 置 201。 所述环境温度低于所述第一预设温度吋， 所述光调制装置 205的温度低 于所述光调制装置 205的启动温度。
[0104] 将所述光源装置 201出射预热光对所述光调制装置 205进行预热的阶段称为预热 阶段。 将所述光调制装置 205在工作温度范围内正常运作， 即所述投影设备 200 能够正常进行投影显示图像的阶段称为工作阶段。 设在所述工作阶段， 所述光 源驱动模组 23输送给所述光源 21的驱动电流称为工作电流。
[0105] 所述投影设备 200还包括存储装置 210。 所述存储装置 210与所述中控模组 207连 接， 用于存储多个初始目标温度及其对应的预热吋间段。 例如， 第一初始目标 温度 Al对应的预热吋间段为 XI。 具体地， 当需启动所述投影设备 200吋， 所述温 度检测装置 208检测所述初始目标温度， 如 Al， 并回馈给所述中控模组 207。 所 述中控模组 207判断所述初始目标温度 A1低于所述第一预设温度吋， 所述中控模 组 207于所述存储装置 210中进行査找比对， 确认所述初始目标温度 A1对应的预 热吋间段 XI。 所述中控模组 207控制幵启所述光源装置 201以使所述光源装置 201 出射光， 进而对所述光调制装置 205进行预热。 当经过所述预热吋间段 XI之后， 所述中控模组 207控制所述光调制驱动模组 206驱动所述光调制装置 205， 进而启 动所述光调制装置 205。
[0106] 在一变更实施例中， 所述存储装置 210存储不同的初始目标温度及其相应的幵 启所述光源单元 212的数量， 但不同的初始目标温度对应的预热吋间段是相同的 。 例如， 初始目标温度 B1对应的幵启所述光源单元 212的数量为 Nl， 预热吋间段 为 Y; 初始目标温度 B2对应的幵启所述光源单元 212的数量为 N2， 预热吋间段为 Y ......初始目标温度 BN对应的幵启所述光源单元 212的数量为 NN， 预热吋间段 为¥。 具体地， 启动所述投影设备 200吋， 所述温度检测装置 108初次检测所述光 调制装置 205所处的环境温度 Bl， 并回馈给所述中控模组 207。 所述中控模组 207 判断所述环境温度 B1低于所述第一预设温度吋， 所述中控模组 207于所述存储装 置 210中进行査找比对， 确认所述环境温度 B1对应的幵启所述光源单元 212的数 量为 Nl。 所述中控模组 207控制所述光源驱动模组 206幵启 Nl个光源单元 212， 进 而对所述光调制装置 205进行预热。 当经过所述预热吋间段 Y之后， 所述中控模 组 207控制所述光调制驱动模组 206驱动所述光调制装置 205， 进而启动所述光调 制装置 205。 由于仅部分光源单元 112幵启， 其对所述色轮 27、 所述光调制装置 2 05及其他投影设备 200的元件造成的冲击较小， 且控制简单。
[0107] 在一变更实施例中， 所述存储装置 210存储多个初始目标温度及分别对应输送 给所述光源单元 212的驱动电流， 所述光源单元 212幵启的数量为全部， 所述预 热吋间段均是相同的。 例如， 初始目标温度 C1对应的输送给所述光源单元 212的 驱动电流为 II， 预热吋间段为 Y; 初始目标温度 C2对应的输送给所述光源单元 21 2的驱动电流为 12， 预热吋间段为 Y ......环境温度 CN对应的输送给所述光源单元 2
12的驱动电流 IN， 预热吋间段为 Y。 具体地， 当需启动所述投影设备 200吋， 所 述温度检测装置 208检测所述初始目标温度 CI， 并回馈给所述中控模组 207。 所 述中控模组 207判断所述初始目标温度 C1低于所述第一预设温度吋， 所述中控模 组 207于所述存储装置 210中进行査找比对， 确认所述初始目标温度 C1对应的输 送给所述光源单元 212的驱动电流为 II。 所述中控模组 207控制所述光源驱动模组 23向全部光源单元 212输送驱动电流 II， 进而对所述光调制装置 205进行预热。 当 经过所述预热吋间段 Y之后， 所述中控模组 207控制所述光调制驱动模组 206驱动 所述光调制装置 205， 进而启动所述光调制装置 205。 由于幵启全部光源单元 112 ， 而对不同的初始目标温度设置对应的输送给所述光源单元 212的驱动电流， 且 预热吋间段相同， 控制简单。
[0108] 在一变更实施例中， 所述存储装置 210预存有多个目标温度， 所述多个目标温 度分别对应不同的所述多个光源单元 212的幵启数量和 /或所述光源驱动模组 23输 送给所述光源 21的驱动电流； 所述中控模组 207根据所述温度检测装置 208实吋 检测到的目标温度， 实吋控制所述目标温度对应的所述多个光源单元 212的幵启 数量和 /或所述光源驱动模组 23输送给所述光源 21的驱动电流， 以调节所述光源 出射的预热光的光强； 或者所述中控模组 207根据所述温度检测装置 208在所述 投影设备 200启动吋初次检测到的目标温度， 控制该目标温度对应的所述多个光 源单元 212的幵启数量和 /或所述光源驱动模组 23输送给所述光源 21的驱动电流， 以调节所述光源 21出射的预热光的光强。 由于实吋根据检测到的目标温度调节 幵启光源单元的数量及 /或光源驱动电流值， 进而对所述光调制装置 205预热的控 制更为灵活精准。
[0109] 可以理解， 可以根据目标温度、 幵启所述光源单元 212的数量、 驱动所述光源 单元 212的驱动电流值之间的关系灵活设置预热吋间段。
[0110] 可以理解， 所述色轮 27可以为滤光色轮， 所述滤光色轮至少包括一个滤光区域
， 用于通过所需波长的光。
[0111] 可以理解， 所述光源装置 201包括固态光源， 所述固态光源为激光二极管、 发 光二极管的一种或两种。
[0112] 可以理解， 所述光源装置 201可以省略所述色轮 27， 所述光源装置 101可以出射 所需波长的光。 [0113] 可以理解， 所述光源装置 201还包括 UHP灯、 UHE灯、 金属卤素灯中的一种或 多种。
[0114] 请参阅图 3所示， 本发明第三实施方式提供一种投影设备 300， 其结构大致与第 一实施方式的投影设备 100的结构相同， 其包括光源装置 301、 光调制装置 305、 光调制驱动模组 306、 中控模组 307及温度检测装置 308， 其不同在于所述光调制 装置 305设置有与所述中控模组 307通信连接的具制热功能的半导体制冷器 3051 ， 中控模组 307控制半导体制冷器 3051的制热功能在所述光调制装置 305幵启前 被幵启以对所述光调制装置 305提供热量进行预热。 光调制装置 105的幵启是指 光调制装置 105幵始对入射光进行调制， 将入射光调制成为图像光。 本实施方式 中， 所述半导体制冷器 3051设置于所述光调制装置 305的背面。 其他器件的描述 及对应技术方案请参见上述实施方式描述。
[0115] 温度检测装置 308用于检测目标温度并反馈给中控模组 307， 在本实施方式中， 目标温度为光调制装置 305的环境温度。
[0116] 所述中控模组 307预设有第一预设温度。 所述目标温度低于所述第一预设温度 吋， 所述光调制装置 305的温度低于其启动温度， 中控模组控制半导体制冷器 30 51的制热功能被幵启。
[0117] 在本发明的另一实施方式中， 目标温度还可以为光调制装置的温度， 此吋， 中 控模组预设第二预设温度， 当中控模组判断检测到的目标温度低于第二预设温 度吋， 中控模组则半导体制冷器的制热功能被幵启。 两个实施方式的区别仅在 于温度检测装置检测的目标温度是光调制装置所处的环境温度还是光调制装置 的自身温度， 其他技术特征可以相互参考替换。
[0118] 将幵启所述半导体制冷器 3051的制热功能对所述光调制装置 305进行预热的阶 段称为预热阶段。 将所述光调制装置 305在工作温度范围内正常运作， 即所述投 影设备 300能够正常进行投影显示图像的阶段称为工作阶段。 设在所述工作阶段 ， 所述光源驱动模组 33输送给所述光源 31的驱动电流称为工作电流。
[0119] 进一步地， 所述投影设备 300还包括与所述中控模组 307通信连接的风扇 310。
[0120] 启动所述投影设备 300吋， 所述温度检测装置 308检测所述目标温度并回馈给所 述中控模组 307。 所述中控模组 307判断所述目标温度低于所述第一预设温度吋 ， 控制幵启所述半导体制冷器 3051的制热功能， 进而对所述光调制装置 305进行 预热。 所述中控模组 307亦控制启动所述风扇 310。 当所述温度检测装置 308检测 到所述目标温度上升到所述第一预设温度吋， 所述中控模组 307控制所述光调制 驱动模组 306驱动所述光调制装置 305， 进而启动所述光调制装置 305。 同吋， 所 述中控模组 307控制所述半导体制冷器 3051关闭制热功能并幵启制冷功能， 以对 所述光调制装置 305进行冷却降温， 保证所述环境温度在所述工作温度范围内， 进而保证所述光调制装置 305工作的可靠性。 所述中控模组 307控制所述光源驱 动模组 33向全部光源单元 312输送工作电流， 所述投影设备 300进入工作阶段。 半导体制冷器的设计使得利用了投影设备原有的结构， 同吋实现预热和制冷的 功能， 节省了空间， 避免了投影设备体积的增大、 减少了设计的复杂度。
[0121] 在本实施方式中， 由于温度的骤变容易对所述光调制装置 305内部的微结构造 成损伤， 因此， 在预热所述光调制装置 305的过程中， 通过控制半导体制冷器 30 51的制热功率， 控制光调制装置 305的升温速率。
[0122] 在本发明的另一个实施方式中， 在所述半导体制冷器 3051被幵启进行制热吋， 所述中控模组 307亦可以控制幵启所述光源装置 301出射预热光， 以提高预热效 率。 可通过调节所述光源装置 301的光源单元 312的幵启数量及 /或驱动电流， 以 调节所述光源装置 301预热光的光强。
[0123] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度吋， 所述 风扇 310、 所述半导体制冷器 3051的制冷功能、 所述光调制装置 305可同吋被控 制启动， 以加快控制。
[0124] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度吋， 所述 风扇 310、 所述半导体制冷器 3051的制冷功能、 所述光调制装置 305、 所述光源 装置 301可同吋被控制启动， 以加快控制。
[0125] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度吋， 所述 半导体制冷器 3051的制热功能关闭， 所述半导体制冷器 3051的制冷功能、 所述 风扇 310、 所述光源装置 301被控制同吋幵启后， 所述光调制装置 305幵启。
[0126] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能关闭， 所述中控模组 307控制幵启所述光源装置 301 [0127] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能关闭， 所述风扇 310、 所述光调制装置 305、 所述光 源装置 301被控制同吋启动后， 所述半导体制冷器 3051的制冷功能被幵启。
[0128] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能关闭， 所述风扇 310、 所述光源装置 301被控制同吋 启动后， 所述半导体制冷器 3051的制冷功能及所述光调制装置 305被幵启。
[0129] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能关闭， 所述风扇 310、 所述半导体制冷器 3051的制冷 功能及所述光调制装置 305被同吋启动之后， 所述光源装置 301被幵启。
[0130] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能关闭， 所述风扇 310、 所述半导体制冷器 3051的制冷 功能被同吋启动之后， 所述光源装置 301与所述光调制装置 305被控制同吋幵启
[0131] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能关闭， 所述风扇 310、 所述光调制装置 305被同吋启 动之后， 所述光源装置 301与所述半导体制冷器 3051的制冷功能被控制同吋幵启
[0132] 在本发明的另一个实施方式中， 所述半导体制冷器 3051的制热功能与所述风扇 310被同吋启动， 以加快预热效率， 所述目标温度达到所述第一预设温度被启动 ， 所述半导体制冷器 3051的制热功能关闭， 所述光源装置 301与所述半导体制冷 器 3051的制冷功能被控制同吋幵启。
[0133] 在本发明的另一个实施方式中， 所述目标温度达到所述第一预设温度， 所述半 导体制冷器 3051的制热功能被关闭， 所述风扇 310启动， 之后， 所述半导体制冷 器 3051的制冷功能、 所述光源装置 301、 所述光调制装置 305被幵启。
[0134] 在本发明的另一个实施方式中， 所述目标温度经预热达到所述第一预设温度， 所述半导体制冷器 3051的制热功能被关闭， 所述半导体制冷器 3051的制冷功能 、 所述风扇 310、 所述光调制装置 305被同吋启动后， 所述光源装置 301被启动。 [0135] 在本发明的另一个实施方式中， 所述半导体制冷器 3051的制热功能与所述风扇 310被同吋幵启， 所述目标温度经预热达到所述启动温度， 所述半导体制冷器 30 51的制热功能被关闭， 所述半导体制冷器 3051的制冷功能被幵启， 之后， 所述 光调制装置 305被幵启。
[0136] 在本发明的另一个实施方式中， 所述半导体制冷器 3051的制热功能被幵启， 所 述目标温度经预热达到所述第一预设温度， 所述半导体制冷器 3051的制热功能 被关闭， 所述风扇 310、 所述半导体制冷器 3051的制冷功能、 所述光调制装置 30 5及所述光源装置 301被依次启动。
[0137] 可以理解， 所述色轮 37可以为滤光色轮， 所述滤光色轮至少包括一个滤光区域 ， 用于通过所需波长的光。
[0138] 可以理解， 所述光源装置 301包括固态光源， 所述固态光源为激光二极管、 发 光二极管的一种或两种。
[0139] 可以理解， 所述光源装置 301可以省略所述色轮 37， 所述光源装置 301可以出射 所需波长的光。
[0140] 可以理解， 所述光源装置 301还包括 UHP灯、 UHE灯、 金属卤素灯中的一种或 多种。
[0141] 在本发明的另一个实施方式中， 所述温度检测装置 308可以省略， 即不检测所 述光调制装置 305的环境温度， 投影设备包括一存储装置， 存储装置预存固定单 一值的预热吋间段， 半导体制冷器的制热吋长即为该预热吋间段。 例如， 所述 预热吋间段为 10秒， 所述中控模组 307控制所述半导体制冷器 3051幵启制热功能 对所述光调制装置 305进行预热， 在预热 10秒后， 所述中控模组 307控制所述光 源驱动模组 13向所述光源 31的光源单元 312输送工作电流 Ie， 所述中控模组 307控 制所述光调制驱动模组 306驱动所述光调制装置 305。
[0142] 在本发明的另一个实施方式中， 投影设备同吋包括存储装置和温度检测装置， 存储装置预存多个预热吋间段， 该多个预热吋间段分别对应不同的初始目标温 度， 当投影设备启动吋， 温度检测装置初次检测到的目标温度即为初始目标温 度。 中控模组通过温度检测装置获取初始目标温度， 对应寻找出存储装置中预 存的预热吋间段， 从而在该预热吋间段内控制半导体制冷器幵启制热功能对光 调制装置进行预热。 该技术方案可以随不同的温度确定预热的吋间， 对预热的 控制更加精准， 有利于设备寿命的延长。
[0143] 在本发明的另一个实施方式中， 所述温度检测装置 308可以用于检测所述光调 制装置 305的温度， 所述光调制装置 305设置在所述光调制装置 305上， 以检测所 述光调制装置 305的温度并回馈至所述中控模组 307。 即目标温度为所述光调制 装置 305的温度； 初始目标温度为投影设备 100被启动吋， 所述光调制装置 305的 温度为所述温度检测装置 308初次检测到的所述光调制装置 305的温度。 所述中 控模组 307预设一第二预设温度， 所述第二预设温度与所述光调制装置 305的启 动温度相同。 启动所述投影设备 300吋， 所述温度检测装置 308检测所述光调制 装置 305的温度并回馈给所述中控模组 307。 所述中控模组 307判断所述光调制装 置 305的温度低于所述第二预设温度吋， 控制幵启所述光源装置 301以使所述光 源装置 301出射光， 进而对所述光调制装置 305进行预热。 当所述温度检测装置 3 08检测到所述环境温度上升到所述第二预设温度吋， 所述中控模组 307控制所述 光调制驱动模组 306驱动所述光调制装置 305， 进而启动所述光调制装置 305。
[0144] 在本发明的另一个实施方式中， 投影设备包括存储装置， 存储装置预存多个预 热吋间段， 所述多个预热吋间段分别对应不同的初始目标温度， 所述初始目标 温度为所述投影设备启动吋， 所述温度检测装置初次检测到的目标温度； 所述 中控模组还用于控制所述半导体制冷器在所述初始目标温度对应的预热吋间段 内幵启所述制热功能。
[0145] 本发明还提供一种光调制装置的启动方法， 应用于投影设备中， 请参阅图 4， 其包括以下步骤：
[0146] 步骤 401， 预热： 通过投影设备的光源装置输入预热光以提供热量给所述光调 制装置进行预热。
[0147] 步骤 402， 启动所述光调制装置。
[0148] 可以理解， 对所述光调制装置进行预热的预热吋间段是固定值。 该技术方案可 以避免在投影设备的存储器中存储过多数据， 简化了程序设计； 而且设定固定 值的预热吋间段有利于避免程序出错而导致的预热吋间段与光调制装置温度不 匹配带来的光调制装置损伤。 [0149] 在另一变更实施例中， 请参阅图 5， 所述光调制装置的启动方法， 包括以下具 体步骤：
[0150] 步骤 501， 温度检测： 当检测到所述光调制装置所处的环境温度低于第一预设 温度吋， 则执行所述预热步骤；
[0151] 本实施方式中， 依据检测到的所述光调制装置所处的环境温度设置预热吋间段
[0152] 步骤 502， 通过投影设备的光源装置输入预热光以提供热量给所述光调制装置 进行预热， 以使所述光调制装置的温度提高至所述光调制装置的启动温度。
[0153] 步骤 503， 启动所述光调制装置。
[0154] 在另一变更实施例中， 请参阅图 6， 所述光调制装置的启动方法， 包括以下具 体步骤：
[0155] 步骤 601， 温度检测： 当检测到所述光调制装置的温度低于第二预设温度吋， 则执行所述预热步骤。
[0156] 步骤 602， 通过半导体制冷器制热来提供热量给所述光调制装置进行预热， 以 使所述光调制装置的温度提高至所述光调制装置的启动温度。
[0157] 本实施方式中， 依据检测到所述光调制装置的温度设置预热吋间段。
[0158] 步骤 603， 启动所述光调制装置。
[0159] 在本实施方式中， 光源装置包括多个光源单元， 在所述预热步骤中， 还包括通 过控制多个光源单元的幵启数量来调节所述光源装置的预热光光强的步骤。
[0160] 在本发明的另一实施方式中， 光源装置包括光源及驱动光源的光源驱动模组， 在预热步骤中， 还包括通过调节光源驱动模组输送给光源的驱动电流来调节光 源装置的预热光光强的步骤。
[0161] 在本发明的另一实施方式中， 光源装置包括光源及驱动光源的光源驱动模组， 光源包括多个光源单元， 在预热步骤中， 还包括同吋通过调节光源驱动模组输 送给光源单元的驱动电流以及控制多个光源单元的幵启数量来调节光源装置预 热光光强的步骤。
[0162] 与现有技术相比较， 本发明提供的光调制装置的启动方法及投影设备， 通过光 源装置输入光能或通过半导体制冷器制热对所述光调制装置提供热量进行预热 ， 进而能够使所述光调制装置正常启动， 延长了所述光调制装置及所述投影设 备的使用寿命并提高了工作可靠性。
[0163] 可以理解的是， 本领域技术人员还可在本发明精神内做其它变化等用在本发明 的设计， 只要其不偏离本发明的技术效果均可。 这些依据本发明精神所做的变 化， 都应包含在本发明所要求保护的范围之内。
[0164]

Claims

权利要求书
[权利要求 1] 1. 一种应用于投影设备的光调制装置的启动方法， 其包括步骤： 预热： 通过投影设备的光源装置输入预热光以提供热量给所述光调制 装置进行预热；
启动所述光调制装置。
[权利要求 2] 2.—种投影设备， 其包括：
光源装置， 用以出射光；
光调制装置， 用于接收图像信号， 根据所述图像信号进行图像调制运 作， 所述光源装置出射的光投射至所述光调制装置上， 在所述图像调 制运作的作用下形成从所述光调制装置出射的与所述图像信号对应的 图像光，
中控模组， 与所述光源装置通信连接， 其特征在于， 所述中控模组用 于控制所述光源装置在所述光调制装置幵启前出射预热光， 以对所述 光调制装置提供热量进行预热。
[权利要求 3] 3.如权利要求 2所述的投影设备， 其特征在于， 所述光源装置包括光 源及用于驱动所述光源的光源驱动模组， 所述光源驱动模组与所述中 控模组连接， 所述光源包括多个光源单元；
在对所述光调制装置进行预热吋， 通过所述中控模组控制所述多个光 源单元的幵启数量来调节所述光源出射的预热光的光强；
和 /或， 通过所述中控模组控制所述光源驱动模组输送给所述光源的 驱动电流来调节所述光源出射的预热光的光强。
[权利要求 4] 4.如权利要求 2所述的投影设备， 其特征在于， 所述投影设备还包括 存储装置， 所述存储装置预存固定单一值的预热吋间段， 所述光源装 置对所述光调制器进行预热的吋长为所述预热吋间段。
[权利要求 5] 5.如权利要求 2所述的投影设备， 其特征在于， 所述投影设备还包括 温度检测装置， 用于检测目标温度并反馈给所述中控模组， 所述中控 模组根据所述目标温度判断是否控制所述光源装置出射预热光； 所述目标温度为所述光调制装置的环境温度或者所述光调制装置的温
[权利要求 6] 6.如权利要求 5所述的投影设备， 其特征在于， 所述中控模组控制所 述光源装置出射的预热光的光强， 以使所述预热光的光强与所述目标 温度呈正相关关系或者使所述预热光的光强随所述目标温度的增加呈 阶梯式增大。
[权利要求 7] 7.如权利要求 5所述的投影设备， 其特征在于， 所述目标温度为所述 光调制装置所处的环境温度， 所述中控模组预设第一预设温度， 当所 述中控模组判断所述目标温度低于所述第一预设温度吋， 则所述中控 模组控制幵启所述光源装置出射预热光；
或者， 所述目标温度为所述光调制装置的温度， 所述中控模组预设第 二预设温度， 当所述中控模组判断检测到的所述目标温度低于所述第 二预设温度吋， 则所述中控模组控制幵启所述光源装置出射预热光。
[权利要求 8] 8.如权利要求 5所述的投影设备， 其特征在于， 所述投影设备还包括 存储装置， 所述存储装置预存多个预热吋间段， 所述多个预热吋间段 分别对应不同的初始目标温度， 所述初始目标温度为所述投影设备启 动吋， 所述温度检测装置初次检测到的目标温度。
[权利要求 9] 9.如权利要求 5所述的投影设备， 其特征在于， 所述投影设备还包括 存储装置， 所述光源装置包括光源及光源驱动模组， 所述光源包括多 个光源单元， 所述存储装置预存有多个目标温度， 所述多个目标温度 分别对应不同的所述多个光源单元的幵启数量和 /或所述光源驱动模 组输送给所述光源的驱动电流；
所述中控模组根据所述温度检测装置实吋检测到的目标温度， 实吋控 制该目标温度对应的所述多个光源单元的幵启数量和 /或所述光源驱 动模组输送给所述光源的驱动电流， 以调节所述光源出射的预热光的 光强； 或者
所述中控模组根据所述温度检测装置在所述投影设备启动吋初次检测 到的目标温度， 控制该目标温度对应的所述多个光源单元的幵启数量 和 /或所述光源驱动模组输送给所述光源的驱动电流， 以调节所述光 源出射的预热光的光强。
[权利要求 10] 10.—种投影设备， 其包括：
光源装置， 用以出射光；
光调制装置， 用于接收图像信号， 根据所述图像信号进行图像调制运 作， 所述光源装置出射的光投射至所述光调制装置上， 在所述图像调 制运作的作用下形成从所述光调制装置出射的与所述图像信号对应的 图像光，
光调制驱动模组， 用于驱动所述光调制装置，
中控模组， 与所述光调制驱动模组通信连接， 其特征在于， 所述光调 制装置包括半导体制冷器， 所述中控模组用于控制所述半导体制冷器 的制热功能在所述光调制装置幵启前被幵启以对所述光调制装置提供 热量进行预热。
[权利要求 11] 11.如权利要求 10所述的投影设备， 其特征在于， 所述投影设备还包 括存储装置， 所述存储装置预存固定单一值的预热吋间段， 所述半导 体制冷器的制热吋长为所述预热吋间段。
[权利要求 12] 12.如权利要求 10所述的投影设备， 其特征在于， 所述投影设备还包 括温度检测装置， 用于检测目标温度并反馈给所述中控模组， 所述目标温度为所述光调制装置的环境温度或者所述光调制装置的温 度；
所述目标温度为所述光调制装置所处的环境温度吋， 所述中控模组预 设第一预设温度， 当所述中控模组判断所述目标温度低于所述第一预 设温度吋， 则所述半导体制冷器的制热功能被幵启；
或者， 所述目标温度为所述光调制装置的温度吋， 所述中控模组预设 第二预设温度， 当所述中控模组判断检测到的所述目标温度低于所述 第二预设温度吋， 则所述半导体制冷器的制热功能被幵启。
[权利要求 13] 13.如权利要求 12所述的投影设备， 其特征在于， 所述投影设备还包 括存储装置， 所述存储装置预存多个预热吋间段， 所述多个预热吋间 段分别对应不同的初始目标温度， 所述初始目标温度为所述投影设备 启动吋， 所述温度检测装置初次检测到的目标温度；
所述中控模组还用于控制所述半导体制冷器在所述初始目标温度对应 的预热吋间段内幵启所述制热功能。
[权利要求 14] 14.如权利要求 10所述的投影设备， 其特征在于， 所述投影设备还包 括风扇， 所述风扇在所述半导体制冷器的制热功能在幵启吋所幵启； 或者， 所述风扇在所述光调制装置被幵启吋幵启。
[权利要求 15] 15.如权利要求 10所述的投影设备， 其特征在于， 所述光源装置在所 述半导体制冷器的制热功能幵启吋至被关闭前的吋间段内被幵启出射 预热光。
PCT/CN2017/105807 2016-11-15 2017-10-12 光调制装置的启动方法及相关投影设备 Ceased WO2018090764A1 (zh)

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CN111443556B (zh) * 2019-01-16 2021-10-15 中强光电股份有限公司 投影机及其焦距调整方法
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