WO2018014617A1 - 色轮模组、发光装置及投影系统 - Google Patents

色轮模组、发光装置及投影系统 Download PDF

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Publication number
WO2018014617A1
WO2018014617A1 PCT/CN2017/081447 CN2017081447W WO2018014617A1 WO 2018014617 A1 WO2018014617 A1 WO 2018014617A1 CN 2017081447 W CN2017081447 W CN 2017081447W WO 2018014617 A1 WO2018014617 A1 WO 2018014617A1
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WIPO (PCT)
Prior art keywords
light
primary color
color
primary
color wheel
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/CN2017/081447
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English (en)
French (fr)
Inventor
周宇轩
陈红运
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2018014617A1 publication Critical patent/WO2018014617A1/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
    • 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
    • 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
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • H—ELECTRICITY
    • 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]
    • H04N9/3179—Video signal processing therefor

Definitions

  • the present invention relates to the field of projection technology, and in particular, to a color wheel module, a light emitting device, a projection system, and a control method thereof.
  • the light-emitting device in the projection device outputs monochromatic light of three primary colors of red, green and blue
  • the light modulation device modulates the light of the three primary colors of red, green and blue to generate a monochrome image of the light of each primary color, and images the image on the screen.
  • a color wheel module includes:
  • a first color wheel comprising a first primary color region and a transparent region
  • a second color wheel after the exiting optical path of the transparent region of the first color wheel, includes a first primary color region and a transparent region;
  • a driving device configured to drive the first color wheel and the second color wheel to rotate synchronously around the same axis
  • a region where a first primary color region of the first color wheel and the second color wheel coincides with a projection of a transparent region of the other in the axial direction, and a first primary color of the first color wheel a region in which the projection of the region and the first primary color region of the second color wheel coincides in the axial direction is combined into an area in which the color wheel module emits light of the first primary color under illumination of the light source;
  • An area in which the transparent area of the first color wheel overlaps with the projection of the transparent area of the second color wheel in the axial direction constitutes the color wheel module emitting the second primary color light under illumination of the light source region;
  • An adjusting device configured to adjust a rotation of the first color wheel or the second color wheel by a predetermined angle to control the area of the color wheel module that emits the first primary color light and the light that emits the second primary color light The area is in a predetermined area.
  • first color wheel or the second color wheel further includes a third primary color region, a third primary color region of one of the first color wheel and the second color wheel and a transparent region of the other color
  • the areas in which the projections coincide in the axial direction constitute an area in which the color wheel module emits light of the third primary color under illumination of the light source.
  • first color wheel and the second color wheel are disposed in close proximity, and there is no gap between the first color wheel and the second color wheel.
  • the area of the first color wheel except the transmission area and the area of the second color wheel except the transmission area thereof are reflective areas, and the light exit side of the reflective area is the same as the light incident side.
  • a region of the first color wheel other than the transmissive region and a region of the second color wheel other than the transmissive region thereof are transmissive regions, and a light exiting side of the transmissive region is different from a light incident side;
  • the color wheel module further includes a focusing lens between the first color wheel and the second color wheel, and the light emitted by the first color wheel is collected by the focusing lens to have a spot of a predetermined size Projected onto the second color wheel.
  • the first primary color region carries a red phosphor.
  • a light emitting device includes a light source and a color wheel module as described above.
  • a projection system comprising the light-emitting device, the light modulating device and the control module as described above, wherein the light modulating device is configured to receive the first primary color light and the second primary color light, and to perform the first A primary color light and the second primary color light are image-modulated; and the control module is configured to control a time ratio of the first primary color light and the second primary color light output by the illumination device.
  • a projection system comprising:
  • a light emitting device configured to output at least a first primary color light and a second primary color light according to a time sequence
  • a light modulating device configured to receive the first primary color light and the second primary color light, and perform image modulation on the first primary color light and the second primary color light according to input image data
  • a control module configured to control a time ratio of the first primary color light and the second primary color light output by the illumination device.
  • control module controls the primary color light of the first primary color light and the second primary color light to be relatively heavy, as two frames of the monochrome image.
  • the light source is modulated.
  • the projection system further includes a ratio acquisition module, wherein the ratio acquisition module is configured to acquire a preset time ratio of the first primary color light and the second primary color light output by the illumination device, and the control The module is configured to adjust an actual time ratio of the first primary color light and the second primary color light output by the light emitting device to a preset time ratio.
  • the projection system further includes an image analysis module, and the image analysis module is configured to acquire input grayscale values of the first primary color and the second primary color of each pixel of each frame input image.
  • control module is configured to acquire an original time ratio of the first primary color light and the second primary color light in the combined output color image, and obtain the first primary color light to occupy the preset time a first specific gravity that increases or decreases with respect to the ratio of the original time, and a second specific gravity that increases or decreases with respect to the ratio of the original time in the predetermined time ratio of the second primary color light And calculating, according to the first specific gravity, the second specific gravity, and the input grayscale value, an output grayscale value of each pixel of each frame of the monochrome image when the color image is outputted, and controlling the The light modulation device modulates the image according to the output gray scale value described above.
  • the input gray scale values of the first primary color and the second primary color of a certain pixel point of the input image data are respectively N1 and N2, and the first primary color light is relatively compared in the preset time ratio.
  • the first specific gravity increased in the ratio of the original time is B1
  • the second specific color in the preset time ratio is reduced by 2% with respect to the original time ratio
  • the composite output is one frame.
  • the monochrome images of the color image are the first primary color image, the first primary color image, and the second primary color image, respectively, and the grayscale values of the corresponding pixels in the monochrome image are respectively N1, N1 ⁇ B1, N2 ⁇ (1-B2 ).
  • the input gray scale values of the first primary color and the second primary color of a certain pixel of the input image are respectively N1 and N2, and the first primary color light is set in the preset time ratio relative to The first specific gravity of the reduction of the original time ratio is B2, and the second specific gravity of the second primary color light in the preset time ratio is increased by B1 with respect to the original time ratio, and the composite output is one frame color.
  • the monochrome images of the image are the first primary color image, the first primary color image, and the second primary color image, respectively, and the grayscale values of the corresponding pixels in the monochrome image are N1 ⁇ (1-B2), N2, N2 ⁇ B1, respectively. .
  • the input image data includes an input grayscale value of a first primary color and a second primary color of each pixel of each frame input image
  • the control module is further configured to output a synchronization signal to the light modulation device according to a time ratio of the first primary color light to the second primary color light, such that the illumination device emits the first primary color light within a period of time And the light modulating device modulates the first primary color light according to a corresponding input gray scale value of each pixel point of the first primary color, and the time period in which the illuminating device emits the second primary color light
  • the light modulating means modulates the second primary color light according to a respective input gray scale value of each of the pixel points of the second primary color.
  • the first primary color is red
  • the first primary color light is red light
  • the second primary color is blue
  • the second primary color light is blue light
  • the projection system further includes:
  • a light output mode acquiring device configured to acquire a light output mode, wherein the light-emitting device corresponding to the different light output modes outputs a different time ratio of the first primary color light and the second primary color light;
  • the control module controls a time ratio of the first primary color light and the second primary color light to be output by the light emitting device according to the time ratio corresponding to the light output mode acquired by the light output mode acquiring device.
  • the light emitting device includes a light source and the color wheel module described above;
  • the control module is configured to output a control signal to the adjusting device, and the adjusting device adjusts a rotation angle of the first color wheel or the second color wheel according to the control signal, so that the color wheel mode
  • the region of the group that emits the first primary color light and the region from which the second primary color light is emitted have a predetermined area ratio, such that the time of the first primary color light output by the illumination device and the second primary color light is proportional.
  • a control method applied to a projection system comprising: controlling a time ratio of a first primary color light and a second primary color light emitted by an illumination device of the projection system, and controlling a light modulation device of the projection system to perform image modulation .
  • controlling the time ratio of the first primary color light and the second primary color light emitted by the light emitting device of the projection system comprises the following steps:
  • the actual time ratio of the first primary color light and the second primary color light output by the light emitting device of the projection system is adjusted to a preset time ratio.
  • a preset time ratio of the first primary color light and the second primary color light of the light emitting device is acquired by a ratio acquisition module.
  • a preset time ratio of the first primary color light and the second primary color light of the light emitting device is acquired by a light output mode acquiring device.
  • the light modulation device that controls the projection system performs image modulation, specifically comprising the following steps:
  • the device calculates, according to the first specific gravity, the second specific gravity, and the input grayscale value, an output grayscale value of each pixel of each frame monochrome image when a color image is outputted, and controlling the light modulation
  • the device modulates the image according to the output gray scale value described above.
  • the present invention provides a color wheel module, a light emitting device, a projection system, and a control method, by adjusting an area of the color wheel module that emits the first primary color light and emits the second primary color light.
  • the area of the first primary color light and the second primary color light emitted by the light emitting device is adjustable, and is convenient to use.
  • the primary color light and the second primary color light output by the light-emitting device are relatively heavy, the primary color light is modulated as a light source of the two-frame monochrome image, thereby improving the first primary color light in the projected display image.
  • the second primary color light occupies a relatively heavy primary color brightness, thereby improving the overall display quality.
  • FIG. 1 is a schematic view of a projection system according to a first embodiment of the present invention.
  • FIG. 2 is a schematic view of the color wheel of FIG. 1.
  • FIG. 3 is a schematic flow chart of a control method provided by the present invention.
  • FIG. 4 is a flow chart showing the time ratio of the first primary color light and the second primary color light emitted by the control illumination device controlled by the control method shown in FIG. 3.
  • Fig. 5 is a flow chart showing the image modulation by the control light modulating device of the control method shown in Fig. 3.
  • Figure 6 is a schematic illustration of a projection system in accordance with a second embodiment of the present invention.
  • Projection system 100 200 Illuminating device 10, 81 light source 20 Color wheel module 30 First color wheel 31 First primary color region 311, 331 Transparent area 313, 335 Third primary color region 315 Second color wheel 33 Drive unit 35 Adjustment device 37 Light modulation device 50, 83 Ratio acquisition module 72 Control module 74, 84 Image parsing module 76 Light output mode acquisition device 86 Storage module 87
  • a first embodiment of the present invention provides a projection system 100 including a light emitting device 10 and a light modulating device 50 .
  • the projection system 100 further includes necessary or unnecessary structural features such as a projection lens and a projection screen.
  • the light emitting device 10 is configured to output at least a first primary color light and a second primary color light in time series.
  • the light modulating device 50 is configured to receive the first primary color light and the second primary color light, and perform image modulation on the first primary color light and the second primary color light according to the input image data.
  • the light emitting device 10 includes a light source 20 and a color wheel module 30.
  • the light source 20 is capable of generating an excitation light.
  • the light source 20 can be a light emitting diode, a laser diode, or other solid state light source.
  • the color wheel module 30 is disposed on a transmission path of the excitation light generated by the light source 20, and transmits or wavelength-converts the excitation light to generate at least one primary color light.
  • the color wheel module 30 includes a first color wheel 31 , a second color wheel 33 , a driving device 35 , and an adjusting device 37 .
  • the first color wheel 31 is disposed toward the light source 20.
  • the first color wheel 31 and the second color wheel 33 are coaxially and superposed.
  • the first color wheel 31 has a substantially disk shape and includes a first primary color region 311, a transparent region 313, and a third primary color region 315 which are sequentially disposed in the circumferential direction.
  • the second color wheel 33 includes a first primary color region 331 and a transparent region 335 which are sequentially disposed in the circumferential direction.
  • the first primary color is red
  • the second primary color is blue
  • the third primary color is green
  • the light source 20 is capable of generating blue excitation light.
  • the first primary color region 311 carries a first primary color wavelength converting material to excite and emit light of the first primary color under illumination of the light source 20, and the transparent region 313 and the transparent region 335 are used to emit light of the second primary color.
  • the transparent region 313 and the transparent region 335 may scatter and transmit incident light.
  • the third primary color region 315 carries a third primary color wavelength converting material to excite the third primary color light upon illumination by the light source 20.
  • the above wavelength converting material may be a phosphor, a quantum dot material, or other material that is capable of converting excitation light into a suitable color.
  • the first primary color region 311, the transparent region 313, and the third primary color region 315 of the first color wheel 31 have a sector structure, the angle of the first primary color region 311 is ⁇ /2, and the angle of the third primary color region 315
  • the angle of the transparent region 313 is 2 ⁇ /3, which is 5 ⁇ /6.
  • the first primary color region 331 and the transparent region 335 of the second color wheel 33 have a sector structure, the angle of the first primary color region 331 is ⁇ /2, and the angle of the transparent region 335 is 3 ⁇ /2. It can be understood that the areas of the first primary color region 311, the transparent region 313, and the third primary color region 315 on the first color wheel 31 and the first primary color region 331 on the second color wheel 33 can be set as needed.
  • the area of the transparent region 335 can be set as needed.
  • the driving device 35 is configured to drive the first color wheel 31 and the second color wheel 33 to rotate synchronously about the same axis.
  • the synchronous rotation of the first color wheel 31 and the second color wheel 33 means that the first color wheel 31 and the second color wheel 33 have the same rotational speed, and the rotation start time and the rotation end time are the same.
  • the first primary color region 331 and the transparent region 335 of the second color wheel 33 are alternately and periodically disposed on the transmission path of the excitation light generated by the light source 20, thereby causing the illumination device 10 to periodically output three primary colors.
  • Light sequence In this embodiment, the first color wheel 31 and the second color wheel 33 are disposed on the same rotating shaft, and the driving device 35 drives the rotating shaft to rotate, thereby driving the first color wheel 31 and the The second color wheel 33 rotates.
  • the number of the driving devices 35 may be two, and the two driving devices 35 respectively drive the first color wheel 31 and the second color wheel 33 to rotate.
  • An area where the transparent area 313 of the first color wheel 31 and the transparent area 335 of the second color wheel 33 coincide in the axial direction constitute the color wheel module 30 under the illumination of the light source 20 An area in which the second primary color light is emitted.
  • the first color wheel 31 may not include a third primary color region
  • the second color wheel 33 further includes a third primary color region, the first color wheel 31 and the A region in which the projection of the third primary color region of one of the second color wheel 33 and the transparent region of the other coincides in the axial direction constitutes an area in which the color wheel module 30 emits light of the third primary color under illumination of the light source .
  • the color wheel module 30 only emits the first primary color light and the second primary color light, that is, the first color wheel 31 and the second color wheel 33 do not include the first Three primary color areas.
  • the adjusting device 37 is configured to adjust the first color wheel 31 or the second color wheel 33 to rotate by a predetermined angle to control the area of the color wheel module 30 that emits the first primary color light and the The area where the second primary light is emitted is a predetermined area ratio.
  • the adjusting device 37 is disposed on the second color wheel 33, and the second color wheel 33 is rotated relative to the first color wheel 31 by operating the adjusting device 37 to change the a region where the first primary color region 311 of the first color wheel 31 coincides with a projection of the first primary color region 331 of the second color wheel 33 in the axial direction, and a transparent region 313 on the first color wheel 31
  • An area overlapping with the projection of the transparent region 335 on the second color wheel 33 in the axial direction further changes the proportion of the first primary color light and the second primary color light emitted by the color wheel module 30.
  • the adjusting device 37 can also be disposed on the first color wheel 31, and the first color wheel 31 can be rotated relative to the second color wheel 33 by operating the adjusting device 37.
  • the first primary color region 311 of the first color wheel 31 is The angle of the occupied area of the first primary color region 311 of the second color wheel 33 projected on the axis is ⁇ /3, and the first primary color region 311 of the first color wheel 31 and the first color The angle of the projection of the transparent region 313 of the wheel 31 on the axis is ⁇ /6, the transparent region 313 of the first color wheel 31 and the first primary color region 331 of the second color wheel 33.
  • the angle of the projection of the overlapped area on the axis is ⁇ /6, and the transparent area 313 of the first color wheel 31 and the transparent area 335 of the second color wheel 33 are projected on the axis.
  • the angle of the area occupied by the area is 2 ⁇ /3, and the angle of the area where the third primary color area 315 of the first color wheel 31 and the transparent area 335 of the second color wheel 33 project on the axis overlap It is 2 ⁇ /3.
  • the first color wheel 31 and the second color wheel 33 may also be a belt-like structure that is arranged to periodically translate under the driving of the driving device 35, or is disposed at the driving device 35.
  • the light-emitting device 10 may be replaced by another light source system based on a color wheel and capable of generating primary light for display.
  • the light-emitting device 10 further includes a collecting device (not shown) for collecting, homogenizing or shaping the primary color light generated by the color wheel module 30 through the light collecting device.
  • the light modulating device 50 receives the primary color light output by the light emitting device 10 and performs image modulation on the primary color light.
  • the primary color light after the image modulation by the light modulating device 50 is projected onto a screen (not shown) via a projection device (not shown).
  • the light modulation device 50 can be an LCD, an LCoS, a DMD, or the like.
  • the projection system 100 further includes a ratio acquisition module 72, a control module 74, and an image analysis module 76.
  • the ratio acquisition module 72 is configured to acquire a preset time ratio of the first primary color light and the second primary color light output by the illumination device 10.
  • the ratio acquisition module 72 can be carried on an input device having a structure such as a button or a touch screen connected to the control module 74.
  • the connection between the ratio acquisition module 72 and the control module 74 may be a wired connection by means of a wire or the like, or may be a wireless connection method such as WIFI or Bluetooth.
  • the control module 74 is configured to control the operations of the light source 20, the color wheel module 30, and the light modulation device 50.
  • the image analysis module 76 is configured to analyze the grayscale values of the first primary color, the second primary color, and the third primary color at each pixel in each frame input image data.
  • the input image data includes an input gray scale value of a first primary color and a second primary color of each pixel of each frame input image
  • the control module 74 is configured to control the first output of the illumination device 10
  • the time ratio of the primary color light to the second primary color light, and the ratio of the first primary color light to the second primary color light output by the light emitting device 10 is the time of the first primary color light and the second primary color light output by the light emitting device 10
  • the light modulating device 50 modulates the first primary color light according to a corresponding input gray scale value of each pixel point of the first primary color, and the light emitting device 10 emits the second primary color light within a period of time
  • the light modulating device 50 modulates the second primary color light according to a corresponding input grayscale value of each of
  • control module 74 is configured to output a control signal to the adjusting device 37, and the adjusting device 37 adjusts a rotation angle of the first color wheel 31 or the second color wheel 33 according to the control signal.
  • the area of the color wheel module 30 that emits the first primary color light and the area where the second primary color light is emitted are in a predetermined area ratio, thereby controlling the first primary color light output by the light emitting device 10 The ratio of time to the second primary light.
  • the control module 74 is configured to acquire an original time ratio of the first primary color light and the second primary color light in a composite output one-frame color image, and further, obtain the first primary color light in the pre-predetermined Setting a first specific gravity of the time ratio to increase or decrease with respect to the original time ratio, and obtaining an increase or decrease of the second primary color light in the preset time ratio relative to the original time ratio
  • the second specific gravity is controlled to adjust the color wheel module 30 of the light-emitting device 10, so that the actual time ratio of the first primary color light and the second primary color light emitted by the color wheel module 30 is adjusted to a preset Calculating a time ratio, and calculating, according to the first specific gravity, the second specific gravity, and the input grayscale value, an output grayscale value of each pixel of each frame monochrome image when a color image is synthesized and outputted, and
  • the light modulating device 50 is controlled to modulate an image according to the output gray scale value described above.
  • the image analysis module 76 acquires input grayscale values of the first primary color, the second primary color, and the third primary color of each pixel of the input image, and sets the first primary color, the second primary color, and the first
  • the input gray scale values of a certain pixel of the three primary colors are respectively N1, N2, and N3; and the first primary color light is relatively heavy in the preset time ratio.
  • the control module 74 is configured to control the first primary color light to be modulated as a light source of two frames of monochrome images; the input grayscale values according to the pixel points are respectively N1, N2, and N3, and the first primary color light is preset.
  • the first specific gravity of the ratio of the time ratio to the original time is increased by B1, and the second specific gravity of the second primary color is reduced by a ratio of the original time to the original time ratio B2, the control mode
  • the group 74 calculates the gray level values of the first primary color images of the first primary color light at the corresponding pixel points as N1, N1 ⁇ B1, respectively, and determines the grayscale value of the second primary color image of the second primary color light at the corresponding pixel point. For N2 ⁇ (1-B2), the third primary color image of the third primary color light is determined to have a grayscale value of N3 at the corresponding pixel.
  • the control module 74 further controls the light modulation device 50 to time-modulate the two primary color images of the two frames when the color wheel module 30 emits a relatively small first primary color in the preset time ratio;
  • the control module 74 is configured to control the light modulating device 50 to modulate a second primary color image when the color wheel module 30 emits the second primary color light;
  • the control module 74 is configured to control the light modulating device
  • the third primary color image is modulated by the color wheel module 30 when the third primary color light is emitted, that is, one frame of the color image is synthesized by four-frame monochrome image synthesis, and the four-frame monochrome image is: the first primary color The first primary color, the second primary color, and the third primary color, wherein the grayscale values of the pixels in the four-frame monochrome image are N1, N1 ⁇ B1, N2 ⁇ (1-B2), and N3, respectively.
  • the second primary color light When the second primary color light is relatively heavy in a preset time ratio of the first primary color light and the second primary color light, set the first primary color light to be in the preset time ratio relative to the The original time ratio decreases the specific gravity B2, and the second primary color light increases the proportion B1 with respect to the original time ratio in the actual time ratio, and the second primary color light is added as a two-frame monochrome image.
  • the four-frame monochrome image is respectively: a first primary color, a second primary color, a second primary color, and a third primary color, and the grayscale values of the pixels in the four-frame monochrome image are: N1 ⁇ (1-B2), N2, N2 ⁇ B1, N3.
  • the following is an example in which the preset time ratio of the first primary color light and the second primary color light is 2:1, and the original time ratio of the first primary color light to the second primary color light is 1:1, and the image analysis is performed.
  • the input gray scale values of the first primary color and the second primary color of a certain pixel of a frame input color image acquired by the module 76 are 250, 100, and 200, respectively.
  • the control module 74 calculates, based on the ratio of the original time, that the proportion of the first primary color light increases and the specific gravity of the second primary color decreases by 30%, that is, the first A primary color light is increased by 30% on the basis of the original time ratio, and the second primary color light is reduced by 30% on the basis of the original time ratio.
  • the control module 74 adjusts and controls the adjusting device 37 of the light emitting device 10 to rotate the second color wheel 33 by a certain angle of 2 ⁇ /9 with respect to the first color wheel 31, thereby further
  • the actual time ratio of the second primary color light is adjusted to a preset time ratio of 2:1.
  • the control module 74 calculates the brightness of the first primary color light added to the pixel. As described above, the first primary color light is increased by 30% based on the original time ratio, and the pixel is added. The brightness of the first primary color light is 250 ⁇ 30%, and the second primary color light is reduced by 30% based on the original time ratio, and the brightness of the second primary color light for the pixel is 100 ⁇ ( 1-30%), the brightness of the third primary color light remains unchanged.
  • the grayscale values of the above-mentioned pixels in the modulated four-frame image are: 250, 250 ⁇ 30%, 100 ⁇ (1-30%), and 200, respectively.
  • the first color wheel 31 and the second color wheel 33 are disposed in close proximity, and there is no gap between the first color wheel 31 and the second color wheel 33.
  • the first color wheel 31 and the second color wheel 33 are reflective color wheels to reduce light loss between the first color wheel 31 and the second color wheel 33.
  • the area of the first color wheel 31 excluding the transmissive area and the area of the second color wheel 33 excluding the transmissive area are reflective areas, and the light exit side of the reflective area is the same as the light incident side.
  • the first color wheel 31 and the second color wheel 33 there is a preset distance between the first color wheel 31 and the second color wheel 33, and the first color wheel 31 and the second color wheel 33 are transmissive color wheels, and the first color wheel 31 is divided The area outside the transmission area and the area of the second color wheel 33 excluding the transmission area are transmissive areas, and the light exit side of the transmissive area is different from the light incident side.
  • the color wheel module 30 further includes a focusing lens (not shown) such that light emitted from the first color wheel 31 is collected by the focusing lens and incident on the second color wheel 33, thereby causing the spot size on the second color wheel 33. Meet the needs of the preset.
  • the size of the spot incident on the second color wheel 33 is related to the spot size formed by the light beam of the subsequent color path of the first color wheel 31 in the projection system 100, and precisely controls the size of the spot incident on the second color wheel 33, thereby facilitating The size of the spot formed by the beam of the subsequent optical path is precisely controlled.
  • the projection system 100 may not modulate the relatively heavy light as a light source of two frames of images, specifically, adjust the ratio of the first primary color light to the second primary color light of the light emitting device 10, in the light emitting device 10 During the period in which the first primary color light is emitted, the control light modulating device 50 performs image modulation according to the corresponding input grayscale value of the first primary color light at each pixel point in the input image data acquired by the image analysis module 76; 10, during the period in which the second primary color light is emitted, the control light modulating device 50 performs image modulation according to the corresponding input grayscale value of the second primary color light in each input pixel in the input image data acquired by the image analysis module 76; During the period in which the device 10 emits the third primary color light, the control light modulation device 50 performs image modulation according to the corresponding input grayscale value of the third primary color light in each of the input image data acquired by the image analysis module 76.
  • the red, blue, and green luminance values of a certain pixel in the input image data acquired by the image analysis module 76 are respectively: 250, 100, and 200, and the user selects the red light increase mode, and the default is in the red light increase mode.
  • the ratio of the red light exiting section and the blue light exiting section of the color wheel module 30 is set to 2:1, and the control light modulating device 50 modulates according to the grayscale value of 250 during the period in which the color wheel module 30 emits red light, and The control light modulating device 50 modulates the gray scale value of 100 during the period in which the color wheel module 30 emits blue light.
  • the present invention further provides a control method applied to the projection system 100, which specifically includes the following steps:
  • Step 31 Control a time ratio of the first primary color light and the second primary color light emitted by the light emitting device 10 of the projection system 100.
  • Step 32 controlling the light modulation device 50 of the projection system 100 to perform image modulation.
  • the light modulating device 50 performs image modulation on the first primary color light during a period in which the light emitting device 10 emits the first primary color light, and the light modulating device 50 emits the second primary color light in the light emitting device 10
  • the first primary color light is image modulated.
  • step 31 the time ratio of the first primary color light and the second primary color light emitted by the illumination device 10 of the projection system 100 is controlled. Referring to FIG. 4, the following steps are specifically included:
  • Step 301 Acquire a preset time ratio of the first primary color light and the second primary color light of the light emitting device 10.
  • the preset time ratio of the first primary color light and the second primary color light is obtained by the ratio acquisition module 72.
  • the first primary color light is in the The proportion of the preset time ratio of the first primary color light and the second primary color light is heavier.
  • Step 302 Control the actual time ratio of the first primary color light and the second primary color light output by the illumination device 10 of the projection system 100 to be equal to a preset time ratio.
  • the primary color light having a relatively large proportion of the preset time ratio is modulated as a light source of two frames of monochrome images when the one-frame color image is synthesized and output.
  • the overlapping area of the first primary color regions 331 of the color wheel 33 is achieved.
  • control module 74 is configured to output a control signal to the adjusting device 37, and the adjusting device 37 adjusts a rotation angle of the first color wheel 31 or the second color wheel 33 according to the control signal. So that the area of the color wheel module 30 that emits the first primary color light and the area that emits the second primary color light form a predetermined area ratio, thereby causing the first primary color light output by the light emitting device 10
  • the actual time ratio of the light with the second primary color is the preset time ratio.
  • the light modulating device 50 of the projection system 100 is controlled to perform image modulation.
  • the method includes the following steps:
  • Step 401 Analyze an input grayscale value of the first primary color and the second primary color of each pixel point of the input image data. It is assumed that the input gray scale values of the first primary color and the second primary color of a certain pixel point are N1 and N2, respectively.
  • the image analysis module 76 acquires an input grayscale value of the first primary color and the second primary color of each pixel of the input image.
  • Step 402 Acquire a first specific gravity of the first primary color light that increases or decreases with respect to the original time ratio in the preset time proportion, and a proportion of the second primary color light to the preset time A second specific gravity that decreases or increases relative to the original time.
  • the control module 74 calculates, by using the control module 74, that the first primary color light increases in the preset time ratio relative to the original time ratio by B1, and the second primary color light a second specific gravity B2 that is reduced in proportion to the original time in the preset time ratio.
  • Step 403 Calculate, according to the first specific gravity, the second specific gravity, and the input grayscale value, an output grayscale value of each pixel of each frame of the monochrome image when the color image is outputted, and a control station.
  • the light modulating device 50 modulates the image in accordance with the output gray scale value described above.
  • the control unit 74 calculates that the first primary color light is relatively heavy in the preset time ratio, and further determines that the first primary color light is modulated as a light source of two frames of monochrome images. Calculating, by the control module 74, that the grayscale values of the pixel points are N1, N1 ⁇ B1, N2 ⁇ (1-B2), and N3, respectively; and the light modulation device 50 that controls the projection system 100 is in the When the light-emitting device 10 outputs the primary light that accounts for a relatively large proportion of the preset time ratio, the two-frame monochrome image is time-divisionally modulated.
  • the light modulation device 50 is controlled to output the light in the light-emitting device 10
  • the first primary color images of the two frames are time-divisionally modulated, and the grayscale values of the corresponding pixels of the two primary color image of the two frames are respectively N1, N1 ⁇ B1, and the light modulation device 50 is controlled.
  • the second primary color light is outputted by the illumination device 10
  • a second primary color image is modulated, and a grayscale value of the corresponding pixel of the second primary color image is N2 ⁇ (1-B2)
  • the light modulation device 50 is controlled.
  • the light emitting device 10 outputs the third primary color light, modulating a frame of the third base The image, the third primary color a respective gray scale image pixel value N3.
  • the primary color light is modulated as a light source of two frames of monochrome images, respectively: a first primary color, a second primary color, a second primary color, and a third primary color, wherein the pixel is in the four-frame monochrome image
  • the grayscale values are: N1 ⁇ (1-B2), N2, N2 ⁇ B1, N3.
  • the projection system 100 may not modulate the relatively heavy light as a light source of two frames of images, and control the light modulating device 50 according to the time period during which the light emitting device 10 emits the first primary color light.
  • the first primary color light acquired by the image analysis module 76 is image-modulated at a corresponding input grayscale value of each pixel; and the light modulation device 50 controls the light modulation device 50 according to the image analysis mode during a period in which the illumination device 10 emits the second primary color light.
  • the second primary color light acquired by the group 76 is image-modulated at a corresponding input grayscale value of each pixel; during the period in which the illumination device 10 emits the third primary color light, the control light modulation device 50 acquires according to the image analysis module 76.
  • the third primary color light is image modulated at a corresponding input grayscale value at each pixel.
  • the red, blue, and green luminance values of a certain pixel point acquired by the image analysis module 76 are: 250, 100, and 200, and the user selects the red light increase mode, and the red color wheel is red by default in the red light increase mode.
  • the proportion of the light exiting section and the blue light exiting section is set to 2:1, and the control light modulating device 50 modulates according to the grayscale value of 250 during the period in which the color wheel module 30 emits red light, and controls the light modulating device 50 to be colored.
  • the wheel module 30 modulates according to a grayscale value of 100 during a period in which the blue light is emitted.
  • a second embodiment of the present invention provides a projection system 200 including a light emitting device 81 , a light modulating device 83 , a control module 84 , a light output mode acquiring device 86 , and a storage module 87 .
  • the light-emitting device 81 is substantially the same as the light-emitting device 10 provided by the first embodiment of the present invention
  • the light-modulating device 83 is substantially the same as the light-modulating device 50 provided by the first embodiment of the present invention.
  • the control module 84 is configured to control the operation of the light emitting device 81 and the light modulating device 83.
  • the light output mode obtaining device 86 is configured to acquire a light output mode.
  • the light-emitting device 81 corresponding to the different light output modes outputs a different time ratio of the first primary color light to the second primary color light.
  • the storage module 87 pre-stores a plurality of light output modes, and each of the light output modes corresponds to a time ratio of the light-emitting device 81 outputting the first primary light and the second primary light.
  • the light output mode includes softness, naturalness, highlighting, etc., wherein when the light output mode is soft, the preset time ratio of the first primary color light to the second primary color light is 1:1; When the output mode is natural, the preset time ratio of the first primary color light to the second primary color light is 1.2:1; wherein the first primary color light and the second when the light output mode is highlighted The preset time of the primary light is 2:1.
  • the control module 84 is further configured to perform a search and comparison on the plurality of light output modes pre-stored in the storage module 87 according to the light output mode acquired by the light output mode acquiring device 86, and control the The light-emitting device 81 outputs a time ratio of the first primary color light to the second primary color light according to a time ratio of the corresponding light output mode.
  • the control module 84 pre-stores in the storage module 87 according to the light output mode acquired by the light output mode acquiring device 86.
  • the various light output modes are searched and compared, and the time ratio of the first primary color light to the second primary light output by the illumination device 10 according to the soft light output mode is controlled to be 1:1.
  • the projection system 200 can omit the storage module 87 and store the time ratio of the first primary color light and the second primary color light corresponding to the plurality of light output modes in the light output mode acquiring device 86 to one. External storage device.
  • the color wheel module 30, the light-emitting device (10, 81), the projection system (100, 200) and the control method provided by the present invention adjust the area of the color wheel module 30 to emit the first primary color light and The region of the second primary light is emitted such that the time ratio of the first primary light to the second primary light of the illumination device (10, 81) is adjustable for convenient use. Further, since the primary color light and the second primary color light which are output from the light-emitting device 10 are relatively heavy, the primary color light is modulated as a light source of two frames of monochrome images, and a four-frame monochrome image is synthesized and outputted. The frame color image improves the brightness of the primary color of the first primary color light and the second primary color light in the projected display image, thereby improving the overall display quality.

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Abstract

一种色轮模组（30）包括第一色轮（31）、第二色轮（33）、驱动装置（35）及调节装置（37）。第一色轮（31）、第二色轮（33）均包括第一基色区域（311、331）及透明区域（313、335）。驱动装置（35）用于驱动第一色轮（31）和第二色轮（33）绕同一轴线同步旋转。调节装置（37），用于调节第一色轮（31）或第二色轮（33）旋转预定角度，以控制色轮模组（30）出射第一基色光的区域与出射第二基色光的区域成预定的面积占比。还提供一种具有色轮模组（30）的发光装置(10、81)及投影系统(100、200)。

Description

色轮模组、发光装置及投影系统 技术领域
本发明涉及投影技术领域，特别涉及一种色轮模组、发光装置、投影系统及其控制方法。
 背景技术
目前，投影装置广泛应用于电影播放、会议以及宣传等各种应用场合。投影装置内的发光装置输出红绿蓝三基色的单色光，光调制装置对红绿蓝三基色光进行调制，产生各基色光的单色图像，并成像于屏幕上。
技术问题
不同的人对不同的颜色的敏感度不同，在看到同样的投影显示图像时，某些人会觉得某个颜色过亮或过暗，然而，现有投影装置通常为整体亮度的调节，发光装置输出的各单色光的占比为固定不可调的，影响使用。
技术解决方案
有鉴于此，有必要提供一种避免上述问题的色轮模组、发光装置、投影系统及控制方法。
一种色轮模组包括：
第一色轮，包括第一基色区域及透明区域；
第二色轮，位于所述第一色轮的透明区域的出射光路之后，包括第一基色区域及透明区域；
驱动装置，用于驱动所述第一色轮和所述第二色轮绕同一轴线同步旋转；
所述第一色轮和所述第二色轮中其中一个的第一基色区域与另一个的透明区域在所述轴线方向上的投影重合的区域、以及所述第一色轮的第一基色区域与所述第二色轮的第一基色区域在所述轴线方向上的投影重合的区域组合成所述色轮模组在光源的照射下出射第一基色光的区域；
所述第一色轮的透明区域与所述第二色轮的透明区域在所述轴线方向上的投影重合的区域构成所述色轮模组在所述光源的照射下出射第二基色光的区域；
调节装置，用于调节所述第一色轮或所述第二色轮旋转预定角度，以控制所述色轮模组的所述出射第一基色光的区域与所述出射第二基色光的区域成预定的面积占比。
进一步地，所述第一色轮或所述第二色轮还包括第三基色区域，所述第一色轮和所述第二色轮中其中一个的第三基色区域与另一个的透明区域在所述轴线方向上的投影重合的区域构成所述色轮模组在所述光源的照射下出射第三基色光的区域。
进一步地，所述第一色轮和所述第二色轮紧邻设置，所述第一色轮和所述第二色轮之间不存在间隙。
进一步地，所述第一色轮除其透射区域外的区域以及所述第二色轮除其透射区域外的区域为反射式区域，所述反射式区域的光出射侧与光入射侧相同。
进一步地，所述第一色轮和所述第二色轮之间存在预设距离。
进一步地，所述第一色轮除其透射区域外的区域以及所述第二色轮除其透射区域外的区域为透射式区域，所述透射式区域的光出射侧与光入射侧不同；
所述色轮模组还包括位于所述第一色轮和所述第二色轮之间的聚集透镜，所述第一色轮出射的光经所述聚集透镜聚集后，以预定大小的光斑投射到所述第二色轮上。
进一步地，所述第一基色区域承载红色荧光粉。
一种发光装置，其包括光源及如上所述的色轮模组。
一种投影系统，其包括如上所述的发光装置、光调制装置及控制模组，所述光调制装置，用于接收第一基色光、第二基色光，并根据输入图像数据对所述第一基色光及所述第二基色光进行图像调制；所述控制模组，用于控制调节所述发光装置输出的第一基色光与第二基色光的时间占比。
一种投影系统，其包括：
发光装置，用于依时序输出至少第一基色光及第二基色光；
光调制装置，用于接收所述第一基色光、所述第二基色光，并根据输入图像数据对所述第一基色光及所述第二基色光进行图像调制；
控制模组，用于控制调节所述发光装置输出的第一基色光与第二基色光的时间占比。
进一步地，在合成输出一帧彩色图像的图像调制中，所述控制模组控制所述第一基色光和所述第二基色光中时间占比较重的基色光，作为两帧单色图像的光源进行调制。
进一步地，所述投影系统还包括占比获取模组，所述占比获取模组用于获取所述发光装置输出的第一基色光与第二基色光的预设时间占比，所述控制模组用于将所述发光装置输出的第一基色光与第二基色光的实际时间占比调节为预设时间占比。
进一步地，所述投影系统还包括图像解析模组，所述图像解析模组用于获取各帧输入图像的各像素点的第一基色及第二基色的输入灰阶值。
进一步地，所述控制模组用于获取所述第一基色光与所述第二基色光在合成输出彩色图像中的原始时间占比，获取所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第一比重，以及获取所述第二基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第二比重，并依据所述第一比重、所述第二比重及所述输入灰阶值，计算合成输出一帧彩色图像时的各帧单色图像的各像素点的输出灰阶值，以及控制所述光调制装置依上述输出灰阶值进行调制图像。
进一步地，设所述输入图像数据的某一像素点的第一基色、第二基色的输入灰阶值分别为N1、N2，设所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加的第一比重为B1，所述第二基色光于所述预设时间占比中相对于所述原始时间占比减少的第二比重为B2，合成输出一帧彩色图像的单色图像分别为第一基色图像、第一基色图像、第二基色图像，则相应像素点在上述单色图像的灰阶值分别为N1、N1×B1、N2×（1-B2）。
进一步地，设所述输入图像的某一像素点的第一基色、第二基色的输入灰阶值分别为N1、N2，设所述第一基色光于所述预设时间占比中相对于所述原始时间占比减少的第一比重为B2，所述第二基色光于所述预设时间占比中相对于所述原始时间占比增加的第二比重为B1，合成输出一帧彩色图像的单色图像分别为第一基色图像、第一基色图像、第二基色图像，则相应像素点在上述单色图像的灰阶值分别为N1×（1-B2）、N2、N2×B1。
进一步地，所述输入图像数据包括各帧输入图像的各像素点的第一基色及第二基色的输入灰阶值；
所述控制模组还用于根据所述第一基色光与第二基色光的时间占比向所述光调制装置输出同步信号，使得：所述发光装置出射所述第一基色光的时段内，所述光调制装置依据所述第一基色在各所像素点的相应输入灰阶值对所述第一基色光进行调制，且所述发光装置出射所述第二基色光的时段内，所述光调制装置依据所述第二基色在各所像素点的相应输入灰阶值对所述第二基色光进行调制。
进一步地，所述第一基色为红色，所述第一基色光为红光；所述第二基色为蓝色，所述第二基色光为蓝光。
进一步地，所述投影系统还包括：
光输出模式获取装置，用于获取光输出模式，不同的光输出模式对应的所述发光装置输出所述第一基色光与所述第二基色光的时间占比不同；
所述控制模组根据所述光输出模式获取装置获取的光输出模式对应的所述时间占比控制所述发光装置输出所述第一基色光与所述第二基色光的时间占比。
进一步地，所述发光装置包括光源以及上述的色轮模组；
所述控制模组用于向所述调节装置输出控制信号，所述调节装置根据所述控制信号调节所述第一色轮或所述第二色轮的旋转角度，以使得所述色轮模组的所述出射第一基色光的区域与所述出射第二基色光的区域成预定的面积占比，从而使得所述发光装置输出的第一基色光与第二基色光的时间占比。
一种应用于投影系统的控制方法，其包括控制调节所述投影系统的发光装置出射的第一基色光与第二基色光的时间占比，及控制所述投影系统的光调制装置进行图像调制。
进一步地，其中控制调节所述投影系统的发光装置出射的第一基色光与第二基色光的时间占比中具体包括以下步骤：
获取所述发光装置的第一基色光与第二基色光的预设时间占比；
将所述投影系统的发光装置输出的第一基色光与第二基色光的实际时间占比调节为预设时间占比。
进一步地，通过一占比获取模组获取所述发光装置的第一基色光与第二基色光的预设时间占比。
进一步地，通过一光输出模式获取装置获取所述发光装置的第一基色光与第二基色光的预设时间占比。
进一步地，其中控制所述投影系统的光调制装置进行图像调制，具体包括以下步骤：
解析获取输入图像数据的各像素点的第一基色、第二基色的输入灰阶值；
获取所述第一基色光于所述预设时间占比中相对于原始时间占比增加或减少的比重，及第二基色光于所述预设时间占比中相对于所述原始时间占比减少的比重；以及
依据所述第一比重、所述第二比重及所述输入灰阶值，计算合成输出一帧彩色图像时的各帧单色图像的各像素点的输出灰阶值，以及控制所述光调制装置依上述输出灰阶值进行调制图像。
 有益效果
相对于现有技术，本发明提供的色轮模组、发光装置、投影系统及控制方法，通过调节所述色轮模组上出射所述第一基色光的区域及出射所述第二基色光的区域，使得所述发光装置出射的第一基色光与第二基色光的时间占比可调，方便使用。还有，由于通过将所述发光装置输出的第一基色光及第二基色光中占比较重的基色光，作为两帧单色图像的光源进行调制，提高投影显示图像中的第一基色光及第二基色光中占比较重的基色亮度，进而提高了总体显示质量。
 附图说明
图1是本发明第一实施方式的投影系统的示意图。
图2是图1的色轮的示意图。
图3是本发明提供的控制方法的流程示意图。
图4是图3所示的控制方法的控制调节发光装置出射的第一基色光与第二基色光的时间占比的流程示意图。
图5是图3所示的控制方法的控制光调制装置进行图像调制的流程示意图。
图6是本发明第二实施方式的投影系统的示意图。
主要元件符号说明
投影系统 100 、 200
发光装置 10 、 81
光源 20
色轮模组 30
第一色轮 31
第一基色区域 311 、 331
透明区域 313 、 335
第三基色区域 315
第二色轮 33
驱动装置 35
调节装置 37
光调制装置 50 、 83
占比获取模组 72
控制模组 74 、 84
图像解析模组 76
光输出模式获取装置 86
存储模组 87
如下具体实施方式将结合上述附图进一步说明本发明。
 本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。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。
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”时，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。
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。
请参阅图1，本发明第一实施方式提供一种投影系统100，其包括发光装置10及光调制装置50。本实施方式中，所述投影系统100还包括投影镜头、投影屏幕等必要或非必要的结构特征，为节省篇幅，在此不作赘述。发光装置10用于依时序输出至少第一基色光及第二基色光。光调制装置50，用于接收所述第一基色光、所述第二基色光，并根据输入图像数据对所述第一基色光及所述第二基色光进行图像调制。
所述发光装置10包括光源20及色轮模组30。本实施方式中，所述光源20能够产生一激发光。所述光源20可以为发光二极管、激光二极管或其它固态光源。
所述色轮模组30设于所述光源20产生的激发光的传输路径上，并对所述激发光进行透射或波长转换，以产生至少一基色光。请参阅图2所示，所述色轮模组30包括第一色轮31、第二色轮33、驱动装置35及调节装置37。所述第一色轮31朝向所述光源20设置。本实施方式中，所述第一色轮31及所述第二色轮33同轴并叠加设置。所述第一色轮31大致呈圆盘状，其包括沿周向依次设置的第一基色区域311、透明区域313及第三基色区域315。所述第二色轮33包括沿周向依次设置的第一基色区域331及透明区域335。本实施方式中，所述第一基色为红色，所述第二基色为蓝色，所述第三基色为绿色，所述光源20能够产生蓝色激发光。
所述第一基色区域311承载第一基色波长转换材料以在所述光源20的照射下激发出射第一基色光，所述透明区域313及所述透明区域335用于出射第二基色光。在一个实施例中，所述透明区域313以及所述透明区域335可以对入射光进行散射后透射。所述第三基色区域315承载第三基色波长转换材料以在所述光源20的照射下激发出射第三基色光。上述波长转换材料可以是荧光粉、量子点材料或能够将激发光转换成适当颜色的受激光的其他材料。
所述第一色轮31的第一基色区域311、透明区域313及第三基色区域315为扇形结构，所述第一基色区域311的角度为π/2，所述第三基色区域315的角度为2π/3，所述透明区域313的角度为5π/6。所述第二色轮33的第一基色区域331与透明区域335为扇形结构，所述第一基色区域331的角度为π/2，所述透明区域335的角度为3π/2。可以理解，可以根据需要设置所述第一色轮31上的第一基色区域311、透明区域313及第三基色区域315的面积，及所述第二色轮33上的第一基色区域331及透明区域335的面积。
所述驱动装置35用于驱动所述第一色轮31及所述第二色轮33绕同一轴线同步旋转。所述第一色轮31及所述第二色轮33同步旋转是指，所述第一色轮31及所述第二色轮33旋转速度相同，且旋转开始时间和旋转结束时间相同。在所述驱动装置35驱动所述第一色轮31及所述第二色轮33转动的过程中，所述第一色轮31的第一基色区域311、透明区域313及第三基色区域315，以及所述第二色轮33的第一基色区域331及透明区域335交替且周期性设置于所述光源20产生的激发光的传输路径上，进而使得所述发光装置10周期性输出三基色光序列。本实施方式中，所述第一色轮31及所述第二色轮33设在同一旋转轴上，所述驱动装置35驱动所述旋转轴转动，进而带动所述第一色轮31及所述第二色轮33转动。
可以理解，所述驱动装置35的数量可以为两个，两个驱动装置35分别驱动第一色轮31、第二色轮33转动。
所述第一色轮31和所述第二色轮33中其中一个的第一基色区域（311，331）与另一个的透明区域（313、335）在所述轴线方向上的投影重合的区域、以及所述第一色轮31的第一基色区域311与所述第二色轮33的第一基色区域331在所述轴线方向上的投影重合的区域组合成所述色轮模组30在所述光源20的照射下出射所述第一基色光的区域。
所述第一色轮31的透明区域313与所述第二色轮33的透明区域335在所述轴线方向上的投影重合的区域构成所述色轮模组30在所述光源20的照射下出射所述第二基色光的区域。
可以理解，在另一个实施例中，所述第一色轮31可以不包括第三基色区域，而所述第二色轮33还包括第三基色区域，所述第一色轮31和所述第二色轮33中其中一个的第三基色区域与另一个的透明区域在所述轴线方向上的投影重合的区域构成所述色轮模组30在光源的照射下出射第三基色光的区域。
可以理解，在又一个实施例中，所述色轮模组30仅出射第一基色光及第二基色光，即，所述第一色轮31及所述第二色轮33均不包括第三基色区域。
所述调节装置37，用于调节所述第一色轮31或所述第二色轮33旋转预定角度，以控制所述色轮模组30的所述出射第一基色光的区域与所述出射所述第二基色光的区域成预定的面积占比。本实施方式中，所述调节装置37设于所述第二色轮33上，通过操作所述调节装置37使所述第二色轮33相对所述第一色轮31转动，以改变所述第一色轮31的第一基色区域311与所述第二色轮33的第一基色区域331在所述轴线方向上的投影重合的区域，以及所述第一色轮31上的透明区域313与所述第二色轮33上的透明区域335在所述轴线方向上的投影重合的区域，进而改变所述色轮模组30出射的第一基色光与第二基色光的占比。可以理解，也可将所述调节装置37设于所述第一色轮31上，通过操作所述调节装置37使所述第一色轮31相对所述第二色轮33转动。
具体地，当所述色轮模组30出射的第一基色光与所述第二基色光的实际时间占比为1:1时，所述第一色轮31的第一基色区域311与所述第二色轮33的第一基色区域311在所述轴线上投影重合的区域的所占角度大小为π/3，所述第一色轮31的第一基色区域311与所述第一色轮31的透明区域313在所述轴线上投影重合的区域的所占角度大小为π/6，所述第一色轮31的透明区域313与所述第二色轮33的第一基色区域331在所述轴线上投影重合的区域的所占角度大小为π/6，所述第一色轮31的透明区域313与所述第二色轮33的透明区域335在所述轴线上投影重合的区域的所占角度大小为2π/3，所述第一色轮31的第三基色区域315与所述第二色轮33的透明区域335在所述轴线上投影重合的区域的所占角度大小为2π/3。
在其他实施例中，所述第一色轮31、第二色轮33也可以是设置成在所述驱动装置35的驱动下周期性平移的带状结构，或设置成在所述驱动装置35的驱动下周期性转动的筒状结构。进一步，所述发光装置10也可以由其他基于色轮且能够产生显示用基色光的其他光源系统所代替。
可以理解，所述发光装置10还包括收集装置（图未示），以将所述色轮模组30产生的基色光经光收集装置进行收集、匀光或整形等处理。
所述光调制装置50接收所述发光装置10输出的基色光，并对所述基色光进行图像调制。光调制装置50进行图像调制后的基色光经投影装置（图未示）投影到屏幕（图未示）上。可以理解，所述光调制装置50可以为LCD、LCoS、DMD等。
所述投影系统100还包括占比获取模组72、控制模组74及图像解析模组76。
所述占比获取模组72用于获取所述发光装置10输出的第一基色光及第二基色光的预设时间占比。所述占比获取模组72可以承载在一与所述控制模组74连接的具按键、触控屏等结构的输入设备上。所述占比获取模组72与所述控制模组74的连接可以为通过电线等方式的有线连接，也可以为WIFI、蓝牙等无线连接方式。
所述控制模组74用于控制所述光源20、所述色轮模组30及所述光调制装置50的工作。
所述图像解析模组76用于解析各帧输入图像数据中第一基色、第二基色及第三基色在各像素点的灰阶值。
进一步地，所述输入图像数据包括各帧输入图像的各像素点的第一基色及第二基色的输入灰阶值，所述控制模组74用于控制调节所述发光装置10输出的第一基色光与第二基色光的时间占比，所述发光装置10输出的第一基色光与第二基色光的占比为所述发光装置10输出的第一基色光与第二基色光的时间占比，并根据所述第一基色光与第二基色光的时间占比向所述光调制装置50输出同步信号，使得：所述发光装置10出射所述第一基色光的时段内，所述光调制装置50依据所述第一基色在各所像素点的相应输入灰阶值对所述第一基色光进行调制，且所述发光装置10出射所述第二基色光的时段内，所述光调制装置50依据所述第二基色在各像素点的相应输入灰阶值对所述第二基色光进行调制。
进一步地，所述控制模组74用于向所述调节装置37输出控制信号，所述调节装置37根据所述控制信号调节所述第一色轮31或所述第二色轮33的旋转角度，以使得所述色轮模组30的所述出射第一基色光的区域与所述出射第二基色光的区域成预定的面积占比，从而控制所述发光装置10输出的第一基色光与第二基色光的时间占比。
所述控制模组74用于获取所述第一基色光与所述第二基色光在合成输出一帧彩色图像中的原始时间占比，进一步的，获取所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第一比重，以及获取所述第二基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第二比重，控制调节所述发光装置10的色轮模组30，进而使所述色轮模组30出射的第一基色光与所述第二基色光的实际时间占比被调节为预设时间占比，并且依据所述第一比重、所述第二比重及所述输入灰阶值，计算合成输出一帧彩色图像时的各帧单色图像的各像素点的输出灰阶值，以及控制所述光调制装置50依上述输出灰阶值进行调制图像。
所述图像解析模组76获取一帧输入图像的各像素点的第一基色、第二基色及第三基色的输入灰阶值，设所述第一基色、所述第二基色及所述第三基色的某一像素点的输入灰阶值分别为N1、N2、N3；设所述第一基色光在所述预设时间占比中占比较重。
所述控制模组74用于控制第一基色光作为两帧单色图像的光源进行调制；依据上述像素点的输入灰阶值分别为N1、N2、N3，所述第一基色光在预设时间占比中相对于原始时间占比增加的第一比重为B1，及所述第二基色光在预设时间占比中相对于原始时间占比减少的第二比重为B2，所述控制模组74计算所述第一基色光的两帧第一基色图像在相应像素点的灰阶值分别为N1、N1×B1，确定第二基色光的第二基色图像在相应像素点的灰阶值为N2×（1-B2），确定第三基色光的第三基色图像在相应像素点的灰阶值为N3。
所述控制模组74进一步控制所述光调制装置50在所述色轮模组30出射预设时间占比中占比较重的第一基色光时，分时调制两帧第一基色图像；所述控制模组74用于控制所述光调制装置50在所述色轮模组30出射第二基色光时调制一帧第二基色图像；所述控制模组74用于控制所述光调制装置50在所述色轮模组30出射第三基色光时调制一帧第三基色图像，即通过四帧单色图像合成输出一帧彩色图像，所述四帧单色图像分别为：第一基色、第一基色、第二基色及第三基色，上述像素点在所述四帧单色图像的灰阶值分别为N1、N1×B1、N2×（1-B2）、N3。
当所述第二基色光在所述第一基色光与第二基色光的预设时间占比中占比较重时，设所述第一基色光于所述预设时间占比中相对于所述原始时间占比减少比重B2，及所述第二基色光于所述实际时间占比中相对于所述原始时间占比增加的比重B1，则增加的第二基色光作为两帧单色图像的光源进行调制，所述四帧单色图像分别为：第一基色、第二基色、第二基色及第三基色，上述像素点在所述四帧单色图像的灰阶值分别为：N1×（1-B2）、N2、N2×B1、N3。
以下以获取第一基色光与第二基色光的预设时间占比为2:1为例，设第一基色光与第二基色光的原始时间占比为1:1，设所述图像解析模组76获取的一帧输入彩色图像的某一像素点的第一基色、第二基色的输入灰阶值分别为250、100、200。
所述控制模组74计算获取在所述原始时间占比的基础上，所述预设时间占比中第一基色光增加的比重以及第二基色光减少的比重为30%，即所述第一基色光在原始时间占比的基础上增加了30%，所述第二基色光在原始时间占比的基础上减少了30%。所述控制模组74调节控制所述发光装置10的调节装置37，使所述第二色轮33相对所述第一色轮31转动一定角度2π/9，进而使所述第一基色光和所述第二基色光的实际时间占比被调节为预设时间占比2：1。
所述控制模组74计算对于上述像素点所增加的第一基色光的亮度，如上所述，所述第一基色光在原始时间占比的基础上增加了30%，则针对上述像素点补充的第一基色光的亮度为250×30%，所述第二基色光在所述原始时间占比的基础上减少了30%，则针对上述像素点的第二基色光的亮度为100×（1-30%），所述第三基色光的亮度保持不变。上述像素点在调制的四帧图像的灰阶值分别为：250、250×30%、100×（1-30%）、200。
在一个实施例中，第一色轮31和第二色轮33紧邻设置，第一色轮31和第二色轮33之间不存在间隙。在一个实施例中，第一色轮31和第二色轮33为反射式色轮，以减少光线从第一色轮31到第二色轮33之间的光损耗。第一色轮31除其透射区域外的区域以及第二色轮33除其透射区域外的区域为反射式区域，所述反射式区域的光出射侧与光入射侧相同。
在另一个实施例中，第一色轮31和第二色轮33之间存在预设距离，第一色轮31和第二色轮33为透射式色轮，所述第一色轮31除其透射区域外的区域以及所述第二色轮33除其透射区域外的区域为透射式区域，透射式区域的光出射侧与光入射侧不同。色轮模组30还包括聚集透镜（图未示），从而使得从第一色轮31出射的光经过聚集透镜聚集后入射到第二色轮33，从而使得第二色轮33上的光斑大小满足预设的需要。
入射到第二色轮33上的光斑的大小关系到投影系统100中第一色轮31后续光路的光束形成的光斑大小，精确控制入射到第二色轮33上的光斑的大小，从而有助于精确控制后续光路的光束形成的光斑大小。
在一实施例中，投影系统100可以不将占比较重的光作为两帧图像的光源进行调制，具体地，调节发光装置10的第一基色光与第二基色光占比，在发光装置10出射第一基色光的时段内，控制光调制装置50依照所述图像解析模组76获取的输入图像数据中第一基色光在各像素点的相应的输入灰阶值进行图像调制；在发光装置10出射第二基色光的时段内，控制光调制装置50依照所述图像解析模组76获取的输入图像数据中第二基色光在各像素点的相应的输入灰阶值进行图像调制；在发光装置10出射第三基色光的时段内，控制光调制装置50依照所述图像解析模组76获取的输入图像数据中第三基色光在各像素点的相应的输入灰阶值进行图像调制。例如，图像解析模组76获取的输入图像数据中某一像素点的红、蓝、绿亮度值分别为：250、100、200，用户选择了红光增加模式，在红光增加模式下默认将色轮模组30的红光出射段和蓝光出射段的占比设置为2：1，控制光调制装置50在色轮模组30出射红光的时段内按照250的灰阶值进行调制，以及控制光调制装置50在色轮模组30出射蓝光的时段内按照100的灰阶值进行调制。
请参阅图3所示，本发明进一步提供了一种应用于上述投影系统100的控制方法，具体包括如下步骤：
步骤31，控制调节所述投影系统100的发光装置10出射的第一基色光与第二基色光的时间占比。
步骤32，控制所述投影系统100的光调制装置50进行图像调制。
光调制装置50在所述发光装置10出射所述第一基色光的时段内对所述第一基色光进行图像调制，光调制装置50在所述发光装置10出射所述第二基色光的时段内对所述第一基色光进行图像调制。
其中，步骤31，控制调节所述投影系统100的发光装置10出射的第一基色光与第二基色光的时间占比中，请参阅图4所示，具体包括以下步骤：
步骤301：获取所述发光装置10的第一基色光与第二基色光的预设时间占比。本实施方式中，通过所述占比获取模组72获取所需的所述第一基色光与第二基色光的预设时间占比，本实施方式中，所述第一基色光在所述第一基色光与第二基色光的预设时间占比中所占的比例较重。
步骤302：控制所述投影系统100的发光装置10输出的第一基色光与第二基色光的实际时间占比等于预设时间占比。
本实施方式中，所述预设时间占比中所占比例较重的基色光，在合成输出一帧彩色图像时，作为两帧单色图像的光源进行调制。控制调节所述发光装置10输出的第一基色光与第二基色光的实际时间占比等于预设时间占比通过调节所述第一色轮31上的第一基色区域311与所述第二色轮33的第一基色区域331的重合区域实现。
进一步地，所述控制模组74用于向所述调节装置37输出控制信号，所述调节装置37根据所述控制信号调节所述第一色轮31或所述第二色轮33的旋转角度，以使得所述色轮模组30的所述出射第一基色光的区域与所述出射第二基色光的区域成预定的面积占比，从而使得所述发光装置10输出的第一基色光与第二基色光的实际时间占比为所述预设时间占比。
其中，步骤32，控制所述投影系统100的光调制装置50进行图像调制，请参阅图5所示，具体包括以下步骤：
步骤401：解析获取输入图像数据的各像素点的第一基色、第二基色的输入灰阶值。设某一像素点的第一基色、第二基色的的输入灰阶值分别为N1、N2。本实施方式中，利用所述图像解析模组76获取输入图像的各像素点的第一基色、第二基色的输入灰阶值。
步骤402：获取所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第一比重，及所述第二基色光于所述预设时间占比中相对于所述原始时间占比减少或增加的第二比重。本实施方式中，利用所述控制模组74计算出所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加的第一比重为B1，及第二基色光于所述预设时间占比中相对于所述原始时间占比减少的第二比重B2。
步骤403：依据所述第一比重、所述第二比重及所述输入灰阶值，计算合成输出一帧彩色图像时的各帧单色图像的各像素点的输出灰阶值，以及控制所述光调制装置50依上述输出灰阶值进行调制图像。
本实施方式中，通过所述控制模组74计算得出所述第一基色光在预设时间占比中占比较重，进而确定所述第一基色光作为两帧单色图像的光源进行调制，通过所述控制模组74计算得出上述像素点的灰阶值分别为N1、N1×B1、N2×（1-B2）及N3；控制所述投影系统100的光调制装置50在所述发光装置10输出所述预设时间占比中占比较重的基色光时，分时调制两帧单色图像，本实施方式中，控制所述光调制装置50在所述发光装置10输出所述第一基色光时，分时调制两帧第一基色图像，所述两帧第一基色图像的相应像素点的灰阶值分别为N1、N1×B1，控制所述光调制装置50在所述发光装置10输出所述第二基色光时，调制一帧第二基色图像，所述第二基色图像相应像素点的灰阶值为N2×（1-B2），控制所述光调制装置50在所述发光装置10输出所述第三基色光时，调制一帧第三基色图像，所述第三基色图像相应像素点的灰阶值为N3。
当所述第二基色光在所述第一基色光与第二基色光的预设时间占比中占比较重时，设所述第一基色光于所述预设时间占比中相对于所述原始时间占比减少的第一比重为B2，及所述第二基色光于所述预设时间占比中相对于所述原始时间占比增加的第二比重为B1，则增加的第二基色光作为两帧单色图像的光源进行调制，所述四帧单色图像分别为：第一基色、第二基色、第二基色及第三基色，上述像素点在所述四帧单色图像的灰阶值分别为：N1×（1-B2）、N2、N2×B1、N3。
可以理解，在一实施例中，投影系统100可以不将占比较重的光作为两帧图像的光源进行调制，在发光装置10出射第一基色光的时段内，控制光调制装置50依照所述图像解析模组76获取的第一基色光在各像素点的相应的输入灰阶值进行图像调制；在发光装置10出射第二基色光的时段内，控制光调制装置50依照所述图像解析模组76获取的第二基色光在各像素点的相应的输入灰阶值进行图像调制；在发光装置10出射第三基色光的时段内，控制光调制装置50依照所述图像解析模组76获取的第三基色光在各像素点的相应的输入灰阶值进行图像调制。例如，图像解析模组76获取的某一像素点的红、蓝、绿亮度值分别为：250、100、200，用户选择了红光增加模式，在红光增加模式下默认将色轮的红光出射段和蓝光出射段的占比设置为2：1，控制光调制装置50在色轮模组30出射红光的时段内按照250的灰阶值进行调制，以及控制光调制装置50在色轮模组30出射蓝光的时段内按照100的灰阶值进行调制。
请参阅图6，本发明第二实施方式提供一种投影系统200，其包括发光装置81、光调制装置83、控制模组84、光输出模式获取装置86及存储模组87。所述发光装置81与本发明第一实施方式提供的发光装置10大致相同，所述光调制装置83与本发明第一实施例提供的光调制装置50大致相同。
所述控制模组84用于控制所述发光装置81及所述光调制装置83的工作。
所述光输出模式获取装置86，用于获取光输出模式。不同的光输出模式对应的所述发光装置81输出所述第一基色光与所述第二基色光的时间占比不同。
所述存储模组87预存储多种光输出模式，每种光输出模式对应一种所述发光装置81输出所述第一基色光与所述第二基色光的时间占比。例如，所述光输出模式包括柔和、自然、高亮等，其中光输出模式为柔和时，所述第一基色光与所述第二基色光的预设时间占比为1：1；其中光输出模式为自然时，所述第一基色光与所述第二基色光的预设时间占比为1.2：1；其中光输出模式为高亮时，所述第一基色光与所述第二基色光的预设时间占比为2：1。
所述控制模组84还用于根据所述光输出模式获取装置86获取的光输出模式，于所述存储模组87中预存储的多种光输出模式进行查找及比对，并控制所述发光装置81依据相应光输出模式的时间占比输出所述第一基色光与所述第二基色光的时间占比。
例如，所述光输出模式获取装置86获取的光输出模式为柔和时，所述控制模组84根据所述光输出模式获取装置86获取的光输出模式，于所述存储模组87中预存储的各种光输出模式进行查找及比对，并控制所述发光装置10依据柔和的光输出模式输出所述第一基色光与所述第二基色光的时间占比为1:1。
可以理解，所述投影系统200可以省略存储模组87，而将所述光输出模式获取装置86中多种光输出模式对应的第一基色光与第二基色光的时间占比预存储至一外部的存储装置。
本发明提供的色轮模组30、发光装置（10、81）、投影系统（100、200）及控制方法，其通过调节所述色轮模组30上出射所述第一基色光的区域及出射所述第二基色光的区域，以使所述发光装置（10、81）的第一基色光与第二基色光的时间占比可调，方便使用。还有，由于通过将所述发光装置10输出的第一基色光及第二基色光中占比较重的基色光，作为两帧单色图像的光源进行调制，通过四帧单色图像合成输出一帧彩色图像，提高投影显示图像中的第一基色光及第二基色光中占比较重的基色光亮度，进而提高了总体显示质量。
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。

Claims (20)

1. 一种色轮模组，其特征在于：所述色轮模组包括
第一色轮，包括第一基色区域及透明区域；
第二色轮，位于所述第一色轮的透明区域的出射光路之后，包括第一基色区域及透明区域；
驱动装置，用于驱动所述第一色轮和所述第二色轮绕同一轴线同步旋转；
所述第一色轮和所述第二色轮中其中一个的第一基色区域与另一个的透明区域在所述轴线方向上的投影重合的区域、以及所述第一色轮的第一基色区域与所述第二色轮的第一基色区域在所述轴线方向上的投影重合的区域组合成所述色轮模组在光源的照射下出射第一基色光的区域；
所述第一色轮的透明区域与所述第二色轮的透明区域在所述轴线方向上的投影重合的区域构成所述色轮模组在所述光源的照射下出射第二基色光的区域；
调节装置，用于调节所述第一色轮或所述第二色轮旋转预定角度，以控制所述色轮模组的所述出射第一基色光的区域与所述出射第二基色光的区域成预定的面积占比。
2. 如权利要求1所述的色轮模组，其特征在于：所述第一色轮或所述第二色轮还包括第三基色区域，所述第一色轮和所述第二色轮中其中一个的第三基色区域与另一个的透明区域在所述轴线方向上的投影重合的区域构成所述色轮模组在所述光源的照射下出射第三基色光的区域。
3. 如权利要求1所述的色轮模组，其特征在于：所述第一色轮和所述第二色轮紧邻设置，所述第一色轮和所述第二色轮之间不存在间隙。
4. 如权利要求3所述的色轮模组，其特征在于：所述第一色轮除其透射区域外的区域以及所述第二色轮除其透射区域外的区域为反射式区域，所述反射式区域的光出射侧与光入射侧相同。
5. 如权利要求1所述的色轮模组，其特征在于：所述第一色轮和所述第二色轮之间存在预设距离。
6. 如权利要求5所述的色轮模组，其特征在于：所述第一色轮除其透射区域外的区域以及所述第二色轮除其透射区域外的区域为透射式区域，所述透射式区域的光出射侧与光入射侧不同；
所述色轮模组还包括位于所述第一色轮和所述第二色轮之间的聚集透镜，所述第一色轮出射的光经所述聚集透镜聚集后，以预定大小的光斑投射到所述第二色轮上。
7. 如权利要求1所述的色轮模组，其特征在于：所述第一基色区域承载红色荧光粉。
8. 一种发光装置，其包括光源及如权利要求1-7任一项所述的色轮模组。
9.一种投影系统，其包括如权利要求8所述的发光装置、光调制装置及控制模组，所述光调制装置，用于接收第一基色光、第二基色光，并根据输入图像数据对所述第一基色光及所述第二基色光进行图像调制；所述控制模组，用于控制调节所述发光装置输出的第一基色光与第二基色光的时间占比。
10. 一种投影系统，其特征在于，包括：
发光装置，用于依时序输出至少第一基色光及第二基色光；
光调制装置，用于接收所述第一基色光、所述第二基色光，并根据输入图像数据对所述第一基色光及所述第二基色光进行图像调制；
控制模组，用于控制调节所述发光装置输出的第一基色光与第二基色光的时间占比。
11.如权利要求10所述的投影系统，其特征在于：在合成输出一帧彩色图像的图像调制中，所述控制模组控制所述第一基色光和所述第二基色光中时间占比较重的基色光作为两帧单色图像的光源进行调制。
12.如权利要求10所述的投影系统，其特征在于：所述投影系统还包括占比获取模组，所述占比获取模组用于获取所述发光装置输出的第一基色光与第二基色光的预设时间占比，所述控制模组用于将所述发光装置输出的第一基色光与第二基色光的实际时间占比调节为预设时间占比。
13.如权利要求12所述的投影系统，其特征在于：所述投影系统还包括图像解析模组，所述图像解析模组用于获取各帧输入图像的各像素点的第一基色及第二基色的输入灰阶值。
14.如权利要求13所述的投影系统，其特征在于：所述控制模组用于获取所述第一基色光与所述第二基色光在合成输出一帧彩色图像中的原始时间占比，获取所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第一比重，以及获取所述第二基色光于所述预设时间占比中相对于所述原始时间占比增加或减少的第二比重，并依据所述第一比重、所述第二比重及所述输入灰阶值，计算合成输出一帧彩色图像时的各帧单色图像的各像素点的输出灰阶值，以及控制所述光调制装置依上述输出灰阶值进行调制图像。
15.如权利要求14所述的投影系统，其特征在于：设所述输入图像数据的某一像素点的第一基色、第二基色的输入灰阶值分别为N1、N2，设所述第一基色光于所述预设时间占比中相对于所述原始时间占比增加的第一比重为B1，所述第二基色光于所述预设时间占比中相对于所述原始时间占比减少的第二比重为B2，合成输出一帧彩色图像的单色图像分别为第一基色图像、第一基色图像、第二基色图像，则相应像素点在上述单色图像的灰阶值分别为N1、N1×B1、N2×（1-B2）。
16.如权利要求14所述的投影系统，其特征在于：设所述输入图像的某一像素点的第一基色、第二基色的输入灰阶值分别为N1、N2，设所述第一基色光于所述预设时间占比中相对于所述原始时间占比减少的第一比重为B2，所述第二基色光于所述预设时间占比中相对于所述原始时间占比增加的第二比重为B1，合成输出一帧彩色图像的单色图像分别为第一基色图像、第一基色图像、第二基色图像，则相应像素点在上述单色图像的灰阶值分别为N1×（1-B2）、N2、N2×B1。
17.如权利要求10所述的投影系统，其特征在于：所述输入图像数据包括各帧输入图像的各像素点的第一基色及第二基色的输入灰阶值；
所述控制模组还用于根据所述第一基色光与第二基色光的时间占比向所述光调制装置输出同步信号，使得：所述发光装置出射所述第一基色光的时段内，所述光调制装置依据所述第一基色在各所像素点的相应输入灰阶值对所述第一基色光进行调制，且所述发光装置出射所述第二基色光的时段内，所述光调制装置依据所述第二基色在各所像素点的相应输入灰阶值对所述第二基色光进行调制。
18.如权利要求10至17任意一项所述的投影系统，其特征在于：所述第一基色为红色，所述第一基色光为红光；所述第二基色为蓝色，所述第二基色光为蓝光。
19．如权利要求10所述的投影系统，其特征在于：所述投影系统还包括：
光输出模式获取装置，用于获取光输出模式，不同的光输出模式对应的所述发光装置输出所述第一基色光与所述第二基色光的时间占比不同；
所述控制模组根据所述光输出模式获取装置获取的光输出模式对应的时间占比控制所述发光装置输出所述第一基色光与所述第二基色光的时间占比。
20. 如权利要求10至19任一项所述的投影系统，其特征在于，所述发光装置包括光源以及如权利要求1至7任一项所述的色轮模组；
所述控制模组用于向所述调节装置输出控制信号，所述调节装置根据所述控制信号调节所述第一色轮或所述第二色轮的旋转角度，以使得所述色轮模组的所述出射第一基色光的区域与所述出射第二基色光的区域成预定的面积占比，从而使得所述发光装置输出的第一基色光与第二基色光的时间占比。
PCT/CN2017/081447 2016-07-19 2017-05-27 色轮模组、发光装置及投影系统 Ceased WO2018014617A1 (zh)

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