WO2016165569A1 - 发光装置和投影系统 - Google Patents

发光装置和投影系统 Download PDF

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Publication number
WO2016165569A1
WO2016165569A1 PCT/CN2016/078427 CN2016078427W WO2016165569A1 WO 2016165569 A1 WO2016165569 A1 WO 2016165569A1 CN 2016078427 W CN2016078427 W CN 2016078427W WO 2016165569 A1 WO2016165569 A1 WO 2016165569A1
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WIPO (PCT)
Prior art keywords
light
laser
blue
light source
red
Prior art date
Application number
PCT/CN2016/078427
Other languages
English (en)
French (fr)
Inventor
王则钦
李屹
郭祖强
Original Assignee
深圳市光峰光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201520211124.4U external-priority patent/CN204595412U/zh
Application filed by 深圳市光峰光电技术有限公司 filed Critical 深圳市光峰光电技术有限公司
Priority to EP16779544.2A priority Critical patent/EP3282317B1/en
Priority to US15/564,159 priority patent/US10184641B2/en
Publication of WO2016165569A1 publication Critical patent/WO2016165569A1/zh

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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B33/00Colour photography, other than mere exposure or projection of a colour film
    • G03B33/10Simultaneous recording or projection
    • G03B33/14Simultaneous recording or projection using lenticular screens
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12Combinations of only three kinds of elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30Elements containing photoluminescent material distinct from or spaced from the light source
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/005Projectors using an electronic spatial light modulator but not peculiar thereto
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2013Plural light sources
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • G03B21/204LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2053Intensity control of illuminating light
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B33/00Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08Sequential recording or projection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H04N9/3114Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141Constructional details thereof
    • H04N9/315Modulator illumination systems
    • H04N9/3158Modulator illumination systems for controlling the spectrum
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141Constructional details thereof
    • H04N9/315Modulator illumination systems
    • H04N9/3161Modulator illumination systems using laser light sources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141Constructional details thereof
    • H04N9/315Modulator illumination systems
    • H04N9/3164Modulator illumination systems using multiple light sources
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10Controlling the intensity of the light
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00Combination of light sources
    • F21Y2113/10Combination of light sources of different colours
    • F21Y2113/13Combination of light sources of different colours comprising an assembly of point-like light sources

Definitions

  • the utility model relates to the field of optical technology, and more particularly to a light-emitting device and a projection system.
  • the prior art provides a semiconductor laser that excites different wavelength conversion layers and/or scattering layers disposed along the direction of motion of the color wheel assembly.
  • a light-emitting device for a projection system that forms light of different primary colors, which has the advantages of high light efficiency and small optical expansion, and thus is rapidly developed, and is ideal for a light-emitting device for a single-chip, two-piece, and three-piece projection system. select.
  • a blue laser is generally used to illuminate a color wheel assembly including three segmented regions to sequentially emit blue, green, and red light emitting devices, including three segmented regions.
  • the wheel assembly includes a blue scattering layer distributed along the direction of movement of the color wheel assembly a segmented region, a segmented region provided with a green wavelength conversion layer, and a segmented region provided with a red wavelength conversion layer.
  • a blue laser is generally used to illuminate a color wheel assembly including two segmented regions to sequentially emit blue and yellow light emitting devices, wherein the color wheel assembly including the two segment regions includes a blue light scattering layer distributed along the direction of movement of the color wheel assembly a segmented area and a segmented area having a yellow wavelength conversion layer.
  • a blue laser is generally used to illuminate a color wheel assembly in which a yellow light wavelength conversion layer is distributed along the moving direction of the color wheel assembly to generate white light.
  • the light-converting material contained in the wavelength conversion layer has low light conversion efficiency or may cause light emitted from the light-emitting device.
  • the color coordinates of the primary colors such as red, green or blue, as well as the color gamut and the required color coordinates and color gamut standards, such as Deviations in the DCI or REC.709 gamut standards result in reduced quality of the projected image.
  • the present invention provides a light-emitting device and a projection system to solve the problem that the color gamut achieved by the existing projection system deviates from the required standard color gamut.
  • a light emitting device comprising:
  • the light source module includes an excitation light source that emits excitation light and a compensation light source that emits compensation light;
  • a color wheel assembly including at least one segmented region distributed along a direction of motion of the color wheel assembly, and the color wheel assembly emits the compensation light under illumination of the excitation light source and the compensation light source and includes at least one The first light received by the laser;
  • the compensation light overlaps with at least one of the first light received by the laser, and the compensation light is emitted during a period of exposure of the laser that overlaps with the spectrum of the compensation light, and the compensation light
  • the laser light having the spectral overlap of the compensation light can be independently adjusted.
  • the timing of the compensation light emitted by the compensation light source is the same as the timing of the laser light emitted by the color wheel assembly under the illumination of the excitation light source and overlapping the spectrum of the compensation light.
  • At least one of the at least one segmented region is provided with a wavelength conversion layer, and the wavelength conversion layer absorbs the excitation light to emit laser light.
  • the compensating light source is turned on when the excitation light source is irradiated to a segmented region of the wavelength conversion layer of the laser light beam assembly that absorbs the excitation light and emits a spectrum overlapping with the compensation light. And is turned off when the excitation light source is irradiated to the remaining segment area.
  • At least one segmented region of the at least one segment region not provided with the wavelength conversion layer is provided with a scattering layer, the scattering layer
  • the excitation light emitted from the excitation light source is scattered and emitted.
  • the compensating light source is irradiated to the color wheel assembly with a segmentation region of the wavelength conversion layer that absorbs the excitation light to emit laser light, and a scattering layer is disposed on the color wheel assembly.
  • the segmented area is turned on and turned off when the excitation light source illuminates the remaining segmented area.
  • the excitation light source is turned on in all segmented regions of the color wheel assembly, or
  • the light source module further includes a third light source that emits a third light, the third light and the excitation light are metachromatic light, and the excitation light source is provided with a wavelength conversion layer of the color wheel assembly.
  • the segmented region is opened and closed in the remaining segmented region, and the third light source is provided with a scattering layer on the color wheel assembly
  • the segmented area is turned on and closed in the remaining segmented area.
  • the compensation light source comprises a red laser light source that emits red light and/ Or a cyan laser light source that emits a cyan light, and the excitation light source is a blue laser light source that emits blue light.
  • the dominant wavelength of the blue light emitted by the excitation light source is 445 nm
  • the dominant wavelength of the cyan light emitted by the cyan laser light source is Any value between 510 nm and 530 nm, including the endpoint value
  • the dominant wavelength of the red light emitted by the red laser source is any value between 625 nm and 645 nm, inclusive.
  • the dominant wavelength of the cyan light emitted by the cyan laser source is 520 nm, and the dominant wavelength of the red light emitted by the red laser source is 638nm.
  • the illuminating device further comprises:
  • the control device controls a ratio of the compensation light and the received laser light having a spectral overlap with the compensation light by controlling an output power of the compensation light source and an output power of the excitation light source.
  • control device further includes:
  • a brightness control unit for increasing or decreasing the brightness of the compensated light and the received laser light having a spectral overlap with the compensated light.
  • control device further includes:
  • a PWM controller for controlling the cyan laser light source and / Or the intensity of the laser light emitted by the red laser source.
  • the color wheel assembly emits a sequence of red, green and blue light under illumination of the excitation light source;
  • the compensation light source includes a cyan laser and / Or a red laser, the timing of the cyan laser of the compensation light source is the same as the timing of the blue light and the green light emitted by the color wheel assembly, and the timing of the red laser of the compensation light source is the same as the red light timing of the color wheel assembly. .
  • the color wheel assembly includes a fluorescent wheel and a filter wheel that rotates synchronously with the fluorescent wheel, wherein:
  • the fluorescent wheel includes a green fluorescent region, a blue scattering region, and a red fluorescent region;
  • the filter wheel includes a green filter region disposed corresponding to the green fluorescent region, and a red filter region disposed corresponding to the red fluorescent region.
  • the surface of the green fluorescent region is provided with a green phosphor
  • the surface of the blue scattering region is provided with a scattering powder
  • the surface of the red fluorescent region is provided with a red phosphor.
  • the green filter region is configured to filter out part of the short wavelength and part of the long wavelength light in the light emitted by the green fluorescent region, and the short wavelength ranges from 460 nm to 490 nm. , including endpoint values, the long wavelength ranges from 590 nm to 600 nm, inclusive;
  • the red filter region is configured to filter a portion of the long wavelength light in the light emitted by the red fluorescent region, the long wavelength range being 590nm-600nm, including endpoint values.
  • the color wheel assembly emits a sequence of blue and yellow light under excitation of the excitation light source
  • the compensation light source includes a cyan laser and / Or a red laser; the cyan laser of the compensating light source is turned on in the entire timing section of the color wheel assembly, and the red laser timing of the compensating light source is the same as the yellow light timing of the color wheel assembly.
  • the color wheel assembly is excited by the excitation light source to emit white light throughout the time period;
  • the compensation light source includes a cyan laser and / Or a red laser, the excitation light source and the compensation light source included in the light source module are all turned on in the entire timing section.
  • the excitation light source comprises a first blue laser
  • the color wheel assembly comprises a full yellow wheel
  • the full yellow wheel is excited by the first blue laser to emit yellow light and the partial blue light of the first blue laser is transmitted
  • the emitted yellow light and the transmitted blue light form a white light.
  • the excitation light source further includes a second blue laser
  • the color wheel assembly further includes a full blue wheel and a dichroic mirror.
  • the all blue wheel scatters and decoheres the blue light emitted by the second blue laser
  • the dichroic mirror is configured to filter blue light in the white light emitted by the all yellow wheel, such that the yellow light emitted by the all yellow wheel and the standard blue light emitted by the all blue wheel form white light.
  • the blue laser light emitted by the second blue laser has a dominant wavelength of 462 nm.
  • a projection system comprising the above-described illumination device.
  • the projection system further comprises an imaging component, wherein:
  • the imaging assembly includes a TIR prism, a DMD chip, and a projection lens, the TIR The prism is configured to introduce light emitted from the color wheel assembly onto the DMD chip, and introduce imaging light emitted by the DMD chip into the projection lens.
  • the projection system further comprises a light splitting device, the light splitting device comprising:
  • the spectroscopic device is configured to divide the yellow light into green light and red light during a yellow light timing of the color wheel assembly; wherein the split green light and the compensation
  • the cyan laser of the light source is modulated by the first optical path, and the split red light and the red laser of the compensating light source are modulated by the second optical path.
  • the blue light and the cyan laser are modulated by the first optical path or the second optical path in a timing period in which the color wheel assembly emits blue light.
  • the first optical path is used to distribute the blue light
  • the second optical path is used to distribute the cyan laser
  • the first optical path and the first The two light paths simultaneously modulate the blue light and the cyan laser.
  • the spectroscopic device further includes: a third optical path for modulating the blue light and the cyan laser when the color wheel assembly emits a period of blue light.
  • the projection system when the color wheel assembly is excited by the excitation light source to emit white light during the entire time period, the projection system further includes a light splitting device, and the light splitting device distributes the blue light in the white light to the first light path for modulation.
  • the red light in the white light and the red laser light are distributed to the second optical path for modulation, and the green light in the white light and the cyan laser light are distributed to the third optical path for modulation.
  • the spectroscopic device distributes blue light in the white light to the first optical path for modulation, and further distributes the cyan light in the partial yellow light to the first optical path and the blue light at the same time.
  • the utility model increases the compensation light source, and the compensation light emitted by the compensation light source overlaps with the laser light spectrum emitted by the color wheel assembly under the illumination of the excitation light source, and the compensation light and the color wheel assembly are emitted under the illumination of the excitation light source.
  • the laser light having the spectrum overlapping with the compensation light is simultaneously emitted and independently adjustable, and the color coordinates of the primary color light corresponding to the laser light can be adjusted by combining the compensation light with the laser light, and the light emitting device is adjusted.
  • the color gamut of the projection system is simultaneously emitted and independently adjustable, and the color coordinates of the primary color light corresponding to the laser light can be adjusted by combining the compensation light with the laser light, and the light emitting device is adjusted.
  • FIG. 1 is a schematic structural view of a light emitting device according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing a segmented area of a color wheel assembly according to an embodiment of the present invention
  • FIG. 3 is a schematic view of a segmented area of a color wheel assembly according to another embodiment of the present invention.
  • FIG. 4 is a schematic view of a segmented area of a color wheel assembly according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a light emitting device according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a single-chip DMD projection system according to an embodiment of the present invention.
  • FIG. 7 is a color gamut diagram of the projection system shown in FIG. 6 according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a two-piece DMD projection system according to an embodiment of the present invention.
  • FIG. 9 is a timing diagram and a second DMD of the first DMD chip 108a when the low pass splitting film is provided according to an embodiment of the present invention. Timing diagram of chip 108b;
  • FIG. 10 is a color gamut diagram of the projection system shown in FIG. 8 according to an embodiment of the present invention.
  • FIG. 11 is a timing diagram and a second DMD of the first DMD chip 108a when the band pass splitting film is provided according to an embodiment of the present invention. Timing diagram of chip 108b;
  • FIG. 12 is a first DMD chip 108a and a second DMD chip using a band pass splitting film according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a three-chip DMD projection system according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a three-chip DMD projection system according to another embodiment of the present invention.
  • FIG. 15 is a diagram showing an example of a segmentation area distribution of an all-blue wheel according to an embodiment of the present invention.
  • FIG. 16 is a color gamut diagram of the projection system shown in FIG. 13 according to an embodiment of the present invention.
  • FIG. 17 is a color gamut diagram of the projection system shown in FIG. 14 according to an embodiment of the present invention.
  • the utility model provides a light-emitting device, comprising:
  • the light source module includes an excitation light source that emits excitation light and a compensation light source that emits compensation light;
  • a color wheel assembly including at least one segmented region distributed along a direction of motion of the color wheel assembly, and the color wheel assembly emits the compensation light under illumination of the excitation light source and the compensation light source and includes at least one The first light received by the laser;
  • the compensation light overlaps with at least one of the first light received by the laser, the compensation light and the laser light having a spectral overlap with the compensation light are simultaneously emitted, and the compensation light and the compensation
  • the lasers in which the light is present in overlapping spectra can be independently adjusted.
  • the present invention also provides a projection system including the above-described light emitting device.
  • the embodiment provides a light-emitting device.
  • the light-emitting device includes a light source module 101 , and the light source module 101 .
  • An excitation light source 111 that emits excitation light and a compensation light source 112 that emits compensation light are included.
  • the illuminating device further includes excitation light emitted from the excitation light source 111 and a compensation light source 112.
  • the color wheel assembly 102 in the transmitted optical path of the compensated light is emitted.
  • the color wheel assembly 102 emits excitation light and compensation light source 112 at the excitation source 111.
  • the compensated light is emitted under the illumination of the emitted compensated light and the first light including at least one received laser light. Wherein at least one of the compensation light and the first light is overlapped by the laser, and the compensation light and the laser that overlaps the spectrum of the compensation light are simultaneously emitted, and the compensation light and the laser that overlaps with the compensation light are independently adjustable. .
  • the color wheel assembly 102 includes at least one segmented region distributed along the direction of motion of the color wheel assembly 102.
  • the direction of motion of 102 includes, but is not limited to, circular motion or horizontal or vertical motion.
  • the color wheel assembly 102 At least one of the at least one segmented region included is provided with a wavelength converting layer comprising a wavelength converting material, and the other segmented region is provided with a scattering layer comprising a scattering material.
  • the wavelength converting material absorbs the excitation light source 111
  • the emitted excitation light can be emitted by the laser, and the scattering material can scatter and emit the incident light.
  • the wavelength converting material may be a phosphor, a quantum dot or the like.
  • the scattering material may be a scattering powder or the like.
  • the wavelength conversion layer disposed in at least one of the at least one segment region included in the color wheel assembly 102 is capable of absorbing the excitation light source 111
  • the emitted excitation light emits a laser beam that overlaps with the spectrum of the compensation light.
  • the color wheel assembly 102 is such that when the compensation source 112 is a red laser source. Including at least one segmented region having a red wavelength conversion layer; the color wheel assembly 102 when the compensation source 112 is a cyan laser source Including at least one segmented region provided with a green wavelength conversion layer, and so on, may also be in other forms, which will not be exemplified herein.
  • the specific implementation manner of compensating the light and simultaneously exiting the laser beam with the complementary spectrum of the compensation light may be as follows: compensating the timing of the compensation light emitted by the compensation light source and the compensation light emitted by the color wheel assembly under the illumination of the excitation light source.
  • the timing of the laser beams in which there is spectral overlap is the same.
  • the compensation light source 112 is opened in the segmented region of the laser-transformed wavelength-converting layer of the color wheel assembly 102 that is provided with the absorption excitation light that can be emitted and compensated for the presence of the complementary light, and is closed in the remaining segmented region.
  • An example is as follows:
  • the timing of the red light emitted by the compensation source 112 and the color wheel assembly 102 are compensated.
  • the timing of the red light emitted by the excitation light emitted from the excitation light source is the same.
  • an absorption excitation light source 111 may be disposed on the color wheel assembly 102.
  • the exiting excitation light can exit the segmented region of the wavelength conversion layer of red light in the output light path of the excitation light source and the compensation light source, the excitation light source 111 and the compensation light source 112 are simultaneously turned on, and the compensation light source is turned off in the remaining segment regions. 112.
  • the timing of the red light emitted by the compensating light source 112 can be made the same as the timing of the red light emitted by the color wheel assembly 102 under the illumination of the excitation light source 111.
  • the excitation source 111 is turned on in all of the segmented regions of the color wheel assembly 102 such that the color wheel assembly
  • the segmented region having the scattering layer of 102 is located in the transmission optical path of the excitation light source 111, the excitation light emitted from the excitation light source 111 is incident on the scattering layer, scattered by the scattering layer, and emitted.
  • the light source module further includes a third light source (not shown) that emits the third light, and the third light and the excitation light source that the third light source emits.
  • the emitted excitation light is a metachromatic light.
  • the third source is turned on in a segmented region of the color wheel assembly 102 that is provided with a scattering layer, and is closed in the remaining segmented region, the excitation source 111 is in the color wheel assembly 102.
  • the segmented area with the wavelength conversion layer is turned on and turned off in the remaining segmented areas.
  • the metachromatic light refers to light that exhibits the same color but different spectra.
  • the excitation light source 111 may be a blue light source, such as a blue laser light source or a blue LED light source, and the excitation light source 111
  • the dominant wavelength of the emitted blue light can be 445 nm.
  • the compensation light source 112 includes a red laser light source that emits red light and/ Or a blue-green laser source that emits a cyan light.
  • the dominant wavelength of the cyan light emitted by the cyan laser source may be any value between 510 nm and 530 nm, including the endpoint value.
  • the dominant wavelength of the cyan light is 520nm.
  • the dominant wavelength of red light emitted by the red laser source may be any value between 625 nm and 645 nm, including the endpoint value.
  • the preferred red light source of the red laser source has a dominant wavelength of 638 nm.
  • the third light source is a blue laser light source that emits blue light having a dominant wavelength different from the dominant wavelength of the blue light emitted from the excitation light source 111.
  • the blue light emitted from the third light source may have a dominant wavelength of 462 nm.
  • FIGS. 2 to 4 are provided with a color wheel assembly 102 according to an embodiment of the present invention.
  • the color wheel assembly 102 is in the shape of a disk, and the color wheel assembly 102 A segmented region (referred to as a blue scattering region) 1012 provided with a scattering layer respectively disposed along a direction of its circular motion, and a segmented region (referred to as a green fluorescent region) provided with a green wavelength conversion layer 1022 And a segmented region (referred to as a red fluorescent region) 1023 having a red wavelength conversion layer.
  • a blue scattering region 1012 provided with a scattering layer respectively disposed along a direction of its circular motion
  • a segmented region referred to as a green fluorescent region
  • a red fluorescent region referred to as a red fluorescent region
  • the light source module includes the excitation light source 111 and the compensation light source 112, wherein the compensation light source 112 Including the cyan laser source and the red laser source, the excitation source 111 and the red laser source are turned on in the segmented region of the color wheel assembly 102 having the red wavelength conversion layer, and the segmented region with the green wavelength conversion layer is turned on to activate the excitation source.
  • a segmented region provided with a scattering layer turns on the excitation source 111, or a segmented region provided with a scattering layer turns on the excitation source 111 and the cyan laser source, thereby causing the color wheel assembly 102 a segmented region having a red wavelength conversion layer simultaneously emits a red laser and a red laser, and a segmented region of the green wavelength conversion layer is simultaneously emitted with a green laser and a cyan laser, and a scattering layer is provided
  • the segmented area emits blue light, or both blue and cyan lasers are emitted.
  • the color wheel assembly 102 The segmented region having the red wavelength conversion layer turns on the excitation light source 111 and the red laser source, and the excitation light source 111 and the cyan laser light source are turned on in the segmented region having the green wavelength conversion layer, and the scattering layer is provided.
  • the segmented area opens the third source or is provided with a scattering layer
  • the segmented region turns on the third light source and the cyan laser light source, so that the segmented region provided with the red wavelength conversion layer simultaneously emits the red laser and the red laser, and the segmented region with the green wavelength conversion layer simultaneously emits green Laser and green laser with scattering layer
  • the color wheel assembly 102 is in the form of a disk, and the color wheel assembly 102 A segmented region (also referred to as a yellow fluorescent region) 1024 having a yellow wavelength conversion layer disposed in a direction of its circular motion, and a segmented region (also referred to as a blue scattering region) provided with a scattering layer are provided. .
  • the excitation source 111 is turned on in the segmented region of the color wheel assembly 102 having the yellow wavelength conversion layer, and the red laser source and/or the cyan laser source are provided with a scattering layer.
  • the segmented region turns on the excitation source 111, or the excitation source 111 and the cyan laser source, thereby causing the color wheel assembly 102
  • a segmented region having a yellow wavelength conversion layer simultaneously emits yellow and red light, or simultaneously emits yellow and cyan light, or simultaneously emits yellow, red, and cyan light, and has a scattering layer
  • the segmented area emits blue light, or both blue and cyan light.
  • the color wheel assembly 102 A segmented region having a yellow wavelength conversion layer turns on the excitation light source 111, and a cyan laser source and/or a red laser source; a scattering layer is disposed on the color wheel assembly 102
  • the segmented area, the third light source is turned on, or the third light source and the cyan laser light source are turned on, thereby causing the color wheel assembly 102 A segmented region having a yellow wavelength conversion layer simultaneously emits yellow and red light, or simultaneously emits yellow and cyan light, or simultaneously emits yellow, red, and cyan light, and has a scattering layer
  • the segmented area emits blue light, or both blue and cyan light.
  • the color wheel assembly 102 is in the form of a disk, and the color wheel assembly 102 is a solid color wheel, i.e., in the color wheel assembly 102.
  • a yellow wavelength conversion layer including a yellow light wavelength conversion material is disposed in the circumferential direction.
  • the color wheel assembly 102 If the light source module includes the excitation light source 111 and the compensation light source 112, then the color wheel assembly 102 The excitation light source 111 and the red laser light source and/or the cyan laser light source are turned on during the entire motion cycle, thereby causing the color wheel assembly 102 At the same time, yellow, blue and red light, or yellow, blue and cyan light, or yellow, blue, red and green light are emitted.
  • the color wheel assembly 102 If the light source module includes the excitation light source 111, the compensation light source 112 and the third light source, then the color wheel assembly 102 The excitation light source 111, the third light source, and the red laser light source and/or the cyan laser light source are turned on during the entire motion cycle, thereby causing the color wheel assembly 102 Simultaneously emit yellow light, third light (which is blue light) and red light, or yellow light, third light (which is blue light) and cyan light, or yellow light, third light (which is blue light), red light and green Light.
  • FIG. 5 A structure of a light emitting device according to another embodiment of the present invention is shown.
  • the illuminating device differs from the illuminating device described in the first embodiment in that it further includes a control device 14 .
  • the rest is the same as the first embodiment, and therefore, the portion not described in detail in this embodiment refers to the above-described first embodiment.
  • the control device 14 controls the excitation light source 111 and the compensation light source 112.
  • the control device 14 The ratio of the compensation light to the laser light that overlaps the spectrum of the compensation light is controlled by controlling the output power of the compensation light source 112 and the output power of the excitation light source 111.
  • the compensation compensation light source 112 The ratio of the output power to the output power of the excitation source 111 may be a ratio that controls the intensity of the compensation source 112 and the intensity of the excitation source 111. If the compensation light source 112 can be increased or decreased Alternatively, the current of the light source 111 is excited to achieve a change in light intensity. Since the compensation light source 112 and the excitation light source 111 can be independently adjusted, the control device 14 is passed through It is possible to control the ratio of the compensation light to the laser light that overlaps with the spectrum of the compensation light to an arbitrary ratio.
  • the control device 14 further includes a PWM controller (not shown), the PWM The controller is used to control the luminous intensity of the laser light emitted by the cyan laser source and/or the red laser source.
  • the cyan laser source is controlled and Or the intensity of the laser light emitted by the red laser source, the cyan laser source can be controlled at different times and / Or a red laser source emits laser light of different luminous intensity, for example, when the green wheel wavelength conversion layer and the scattering layer are provided in the color wheel assembly
  • the cyan laser light source is turned on in the segmented region, the illumination intensity of the laser light emitted by the cyan laser light source in the segment region of the color wheel assembly provided with the green wavelength conversion layer can be controlled and a scattering layer is provided.
  • the intensity of the laser light emitted by the segmented region is different.
  • control device 14 also included is a brightness control unit (not shown) for proportionally increasing or decreasing the brightness of the compensated light and the received laser light that overlaps the spectrum of the compensated light.
  • a brightness control unit (not shown) for proportionally increasing or decreasing the brightness of the compensated light and the received laser light that overlaps the spectrum of the compensated light.
  • the specific implementation of increasing or decreasing the brightness in an equal proportion may be an equal increase or decrease in the compensation light source. 112 and the current of the excitation source 111.
  • FIG. 6 is a schematic structural diagram of a single-chip DMD projection system including a light-emitting device 100. And imaging assembly 200.
  • the light-emitting device 100 is any one of the first embodiment or the second embodiment.
  • the color wheel assembly in the light-emitting device 100 is as shown in FIG. 2 .
  • the color wheel assembly shown Briefly described below, portions not described in detail refer to Embodiment 1 or Embodiment 2 above.
  • the light emitting device 100 includes a light source module 101, and the light source module 101 is generally selected from a semiconductor laser and a light source module.
  • the 101 includes an excitation light source and a compensation light source, and may further include a third light source.
  • the compensation source includes a cyan laser source and/or a red laser source. Cyan laser timing and color wheel assembly for compensating light sources 102 The emitted blue and green light timings are the same, and the red laser timing of the compensation source is the same as the red light timing of the color wheel assembly 102.
  • the excitation source is a blue laser 112, and the blue laser having a dominant wavelength of 445 nm is emitted. .
  • the cyan laser that compensates for the light source is generated by the cyan laser 113, and the red laser that compensates for the light source is generated by the red laser 111.
  • the dominant wavelength of the cyan laser emitted by the cyan laser 113 is preferably Any value between 510 nm and 530 nm, including the endpoint value, the dominant wavelength of the red laser emitted from the red laser 111 is preferably 625 nm to 645 nm. Any value between, including the endpoint value.
  • the preferred cyan laser has a dominant wavelength of 520 nm and the red laser has a dominant wavelength of 638 nm.
  • RGB for exiting the color wheel assembly 102 by adding a compensation light source The three primary colors are compensated, wherein the red laser is used to adjust the color coordinate of the red light, and the cyan laser is used to adjust the color coordinates of the blue light and the green light, so that the color coordinates of the red, green and blue light can be adjusted, and then the change is adopted.
  • the color gamut range of the projection system of the illumination device is used to adjust the color coordinate of the red light
  • the cyan laser is used to adjust the color coordinates of the blue light and the green light
  • the preferred DCI The standard color gamut is used as a compensation standard.
  • the red, green and blue light emitted by the color wheel assembly can be the same as or similar to the standard color gamut of the corresponding color light in the DCI standard color gamut to reduce the emission of light.
  • the cyan laser 113 is used for color gamut compensation for blue and green light in RGB three primary colors
  • the red laser 111 is used for the RGB
  • the red light in the three primary colors is compensated by the color gamut, so that the compensated green light DCI color coordinates are (0.265 ⁇ 0.02, 0.69 ⁇ 0.02), and the compensated red DCI
  • the color coordinates are (0.68 ⁇ 0.02, 0.32 ⁇ 0.02), and the compensated blue DCI color coordinates are (0.15 ⁇ 0.01 , 0.06 ⁇ 0.01 ).
  • the color wheel assembly 102 includes a fluorescent wheel 121 and a filter wheel 122 that rotates in synchronization with the fluorescent wheel 121, wherein the fluorescent wheel The segmented area of 121 is as shown in Fig. 2.
  • the fluorescent wheel 121 is a three-color segment color wheel including a segmented region (referred to as a blue scattering region) provided with a scattering layer.
  • the filter wheel 122 includes a green fluorescent region 22 corresponding to the set green filter area and the red filter area corresponding to the red fluorescent area 23, the color wheel assembly 102 further includes a driving device such as a motor for driving the fluorescent wheel 121 and the filter wheel 122 Synchronous rotation.
  • a driving device such as a motor for driving the fluorescent wheel 121 and the filter wheel 122 Synchronous rotation.
  • the green fluorescent region 22 is provided with a green phosphor on the surface, and the blue scattering region 21 is provided with a scattering powder on the surface, and the red fluorescent region 23
  • the surface is provided with a red phosphor, and the phosphor is used to convert short-wavelength light into long-wavelength light; the filter region on the filter wheel 122 is usually a filter.
  • the blue laser passes through the rotating fluorescent light.
  • the RGB trichromatic light that produces the time series is the narrow band spectrum light, the same as the blue laser light, and the red and green light are the broadband spectrum light, in order to improve the color purity
  • the filter wheel 122 Mainly for red and green light filtering, green filter for filtering green light part of the wavelength range between 460nm-490nm and greater than 590nm
  • the green light, the wavelength range includes the endpoint value, and the red filter is used to filter out red light with a wavelength of 600 nm or less.
  • a DMD can be used. It is sufficient to modulate three kinds of lights in sequence. Therefore, it is preferable to use an imaging assembly having a monolithic DMD in this embodiment: a TIR prism 106, a DMD chip 105, and a projection lens 107.
  • the TIR prism 106 is used to reflect the light emitted from the color wheel assembly 102 onto the DMD chip 105, and to reflect the imaging light emitted from the DMD chip 105 to the projection lens 107.
  • An imaging assembly having a monolithic DMD is used to modulate the respective primary colors of light exiting the color wheel assembly 102 to form a color image.
  • three imaging devices of DMD can also be used, one DMD separately modulates one of the lights in RGB; it can also use a two-chip DMD imaging component, where one DMD modulates one of the RGB and the other DMD modulates the RGB The other two kinds of light in the middle.
  • the blue laser of the blue laser 112 has a dominant wavelength of 445 nm, and the cyan laser of the compensation source 113
  • the emission wavelength of 520nm cyan laser and red laser 111 emits a dominant wavelength of 638nm red laser.
  • the cyan laser 113 And the blue laser 112 is turned on, and the blue laser and the cyan laser generate a mixed light of blue light and cyan laser through the blue scattering region 21;
  • the cyan laser 113 And the blue laser 112 is turned on, and the blue laser and the cyan laser generate a mixed light of the green light and the cyan laser through the green fluorescent region 22, and are filtered by the green filter;
  • the red laser is turned on, and the red laser generates a mixture of red and red laser light through the red fluorescent region 23, and filters through the red filter.
  • the filtered light passes through the square rod 103 After being homogenized, it is incident on the TIR prism 106 through the optical relay system 104, reflected onto the DMD chip 105 for modulation, and finally outputted through the projection lens 107.
  • the difference between the compensated system color gamut and the target standard color gamut may be within a set threshold range.
  • Standard DCI The color gamut is the target standard color gamut, and the three color light color coordinates of the target standard color gamut are: green light (0.265, 0.69), red light (0.68, 0.32), blue light (0.15, 0.06).
  • FIG. 7 A color gamut diagram of a projection system provided by an embodiment of the present invention.
  • the blue and cyan laser blends can change the original blue color coordinates, and the mixed blue color coordinates are (0.15 ⁇ 0.01, 0.06 ⁇ 0.01) ), close to the blue light DCI standard color coordinates ( 0.15 , 0.06 ); the combination of green and cyan laser can change the original green color coordinate, and draw it closer to the DCI along the boundary of its color coordinate distribution area
  • the intersection of the sides of the gamut triangles forms a line segment from the upper vertex of the laser+phosphor gamut triangle to the apex of the DCI gamut triangle, which is in the green DIC standard color coordinates ( Near the 0.265, 0.69); the red and red lasers are mixed, and the red color coordinates are obtained after mixing (0.68 ⁇ 0.02, 0.32 ⁇ 0.02) ), the effect of drawing the red color coordinate along the straight line to the red light DCI standard color coordinate (0.68, 0.32) is achieved.
  • the present invention pairs the color wheel assembly 102 by adding a cyan laser 113 and/or a red laser 111.
  • the RGB three primary colors of the emitted light are compensated by the gamut, the cyan laser is used to compensate the blue color coordinates and the green color coordinates, the red laser is used to compensate the red color coordinates, and the original color coordinates are compensated in the DCI.
  • the vicinity of the standard color coordinates makes the color gamut of each projector compensate to the DCI standard, and its color gamut is basically the same. Since the light input is increased, the color gamut range is increased, and the brightness of the color image is increased.
  • the illumination device further includes a PWM controller (pulse width modulation controller), PWM The controller automatically adjusts the illumination intensity of the outgoing light of the cyan laser 113 and/or the red laser 111 by a pulse width modulation control method.
  • PWM controller pulse width modulation controller
  • the color gamut range of the system can be adjusted.
  • the DCI standard color gamut is adjusted for the compensation standard to correct the color gamut of the projection system.
  • the projection system of the embodiment of the present application emits red, green, and blue light in the timing of the color wheel assembly.
  • the cyan laser timing of the compensation light source is the same as the blue light and green light timing emitted by the color wheel assembly, and the red laser timing of the compensation light source and the red emitted by the color wheel assembly The light timing is the same. Therefore, the blue and green light can be compensated by the cyan laser, and the red light is compensated by the red laser to adjust the color gamut of the projection system to the set range.
  • Figure 8 is a schematic diagram of the structure of a two-chip DMD projection system.
  • the projection system includes a light emitting device 100 And a beam splitter 300 with a two-chip DMD chip.
  • the light emitting device 100 includes a light source module 101 and a color wheel assembly 102, and the light source module 101 includes an excitation light source 1111 and a compensation light source, the compensation light source includes a cyan laser 112 and a red laser 113.
  • the color wheel assembly 102 includes a fluorescent wheel, and the distribution of the segmented areas on the fluorescent wheel is as shown in FIG. 3 above.
  • the fluorescent wheel includes a segmented region (also referred to as a yellow fluorescent region) 1024 having a yellow wavelength converting layer and a segmented region (also referred to as a blue scattering region) 1025 having a scattering layer.
  • the color wheel assembly 102 The blue light and the yellow light of the time sequence are emitted under the excitation of the excitation light source 1111, wherein the blue light scattering region 1021 There is a scattering powder for scattering and emitting incident light, such as converting a blue laser of a polarization state into a blue light of an unpolarized state.
  • Yellow fluorescent area 1022 With a yellow phosphor, the role of the phosphor is to convert short-wavelength light into long-wavelength light. Therefore, the blue laser emitted from the excitation source excites the yellow phosphor to obtain yellow fluorescence.
  • Color wheel assembly 102 There is also a driving device such as a motor or the like for driving the fluorescent wheel to rotate.
  • the DCI standard color gamut can be used as the compensation standard.
  • the compensation light source is used to reduce the color gamut and DCI of the emitted light.
  • the compensation source includes a cyan laser and/or a red laser.
  • the cyan laser 112 of the compensation light source is generated by a cyan laser
  • the excitation source 1111 is a blue laser.
  • the dominant wavelength of the blue laser emitted by the blue laser is 445 nm
  • the dominant wavelength range of the cyan laser emitted by the cyan laser is Any value between 510 nm and 530 nm, including the endpoint value
  • the red laser emitting red laser has a dominant wavelength range of 625 nm to 645 nm. Any value between, including the endpoint value.
  • the cyan laser has a dominant wavelength of 520 nm and the red laser has a dominant wavelength of 638 nm.
  • the cyan laser 112 of the compensation source is at the color wheel assembly 102
  • the entire timing segment is turned on, that is, the cyan laser is turned on when the color wheel assembly 102 emits yellow light and blue light; the red laser 113 timing of the compensation light source and the color wheel assembly 102
  • the emitted yellow light timing is the same, that is, the red laser is turned on only when the color wheel assembly 102 emits yellow light.
  • the compensation light source comprises a cyan laser and/or a red laser
  • the dominant wavelength of the blue laser emitted by the excitation source is preferably At 445 nm
  • the dominant wavelength of the cyan laser emitted by the cyan laser is preferably 520 nm
  • the dominant wavelength of the red laser emitted by the red laser is preferably 638 nm.
  • the cyan laser and the excitation light source 1111 are turned on for RGB of the spectroscopic device.
  • the blue and green light in the three primary colors undergo color gamut compensation.
  • the red laser is turned on for RGB
  • the red light in the three primary colors is gamut compensated.
  • the difference between the compensated system color gamut and the target standard color gamut may be within a set threshold range.
  • Standard DCI The color gamut is the target standard color gamut, and the three color light color coordinates of the target standard color gamut are: green light (0.265, 0.69), red light (0.68, 0.32), blue light (0.15, 0.06).
  • the compensated green light DCI color coordinate can be (0.265 ⁇ 0.02, 0.69 ⁇ 0.02), and the compensated red light DCI color coordinate is (0.68).
  • ⁇ 0.02 , 0.32 ⁇ 0.02 the compensated blue light DCI color coordinates are ( 0.15 ⁇ 0.01 , 0.06 ⁇ 0.01 ).
  • Light-emitting device 100 The emitted light is incident on the color wheel assembly 102 after being concentrated by the collecting lens 101, and the yellow light and blue light are emitted through the color wheel assembly 102, and the light emitted from the color wheel assembly 102 enters the square rod 103.
  • the light is homogenized, and then passes through the optical relay system 104 and the TIR prism 105 to enter the beam splitting prism 106, and the splitting and combining prism 106 splits the light to form RGB.
  • Three primary colors of light, and RGB three primary colors of light are distributed to different DMD chips for modulation, and combined to form a color image through the projection lens.
  • the light emitting device 100 further includes a PWM controller (pulse width modulation controller), PWM
  • PWM pulse width modulation controller
  • the controller is used to control the luminous intensity of the outgoing light of the cyan laser and/or the red laser.
  • the PWM controller uses a pulse width modulation control method to detect the cyan laser and / Or the illumination intensity of the emitted light of the red laser is adjusted in time. Since the intensity of the required cyan laser may be different when compensating for blue light and green light, it is necessary to use the existing green and red color coordinates and DCI.
  • the standard color coordinates calculate the intensity of the cyan and red lasers required, so the timing adjustment of the intensity of the cyan and red lasers is required, and the segmentation of the color wheel assembly 102 is also required.
  • a spectroscopic device 300 having a two-chip DMD chip includes a beam splitting prism 106 and a TIR prism 105 a first DMD chip 108a, a second DMD chip 108b, and a projection lens 109 for using the color wheel assembly 102
  • the emitted yellow light and blue light are reflected onto the splitting light combining prism 106, and the splitting light combining prism 106 is used to split the yellow light and the blue light emitted from the color wheel assembly 102 to form RGB three primary colors and distribute them to the first.
  • the DMD chip 108a and the second DMD chip 108b are modulated, and the modulated RGB three primary colors are combined and reflected to the projection lens 109, and the optical splitting prism is split.
  • 106 specifically includes a first prism 107a and a second prism 107b, and a light splitting film 110 is disposed between the first prism 107a and the second prism 107b.
  • the light splitting film 110 between the first prism 107a and the second prism 107b in the beam splitting prism 106 When the light splitting film 110 is a low pass splitting film, the light distributed to the first DMD chip 108a is blue and green light in the RGB three primary colors, and is distributed to the second DMD chip. The light on 108b is the red light in the RGB three primary colors.
  • the blue light and yellow light are at different timings, so the blue light can be modulated by a red or green light path. Therefore, at the color wheel assembly 102 A timing segment in which blue light is emitted, the blue light and the cyan laser may be modulated by the first optical path. Or modulating the blue light and the cyan laser light through the second optical path in a timing segment in which the color wheel assembly emits blue light.
  • the timing diagram of the first DMD chip 108a and the timing diagram of the second DMD chip 108b are as shown in FIG. 9. Shown. Since the low-pass splitting film functions to transmit short-wavelength light to reflect long-wavelength light, different timings of yellow and blue light B emitted by the color wheel assembly 102 When incident on the low-pass splitting film, the low-pass splitting film transmits the green light G in the blue and yellow light and the cyan laser C to the first DMD chip 108a, and the red light R in the yellow light and the red laser R' Reflected onto the second DMD chip 108b, the cyan laser C is mixed with the blue light B, which can change the original blue color coordinate and zoom it to the blue DCI standard color coordinates (0.15, 0.06).
  • the green light is separated from the yellow light, the long wavelength portion of the green light is filtered out.
  • Different projection systems have differences in the process of filtering out the long wavelength of green light, and this difference makes the green color
  • the coordinates have an approximately linear movement along the edge of the green gamut, the cyan laser C and green light G are mixed, which can change the original green color coordinate and zoom it along the above line to the green light DCI standard color coordinate (0.265, 0.69); similarly, due to red light R It is obtained from the light, and the short-wavelength portion of the red light is filtered out.
  • Different projection systems have differences in the process of filtering out the short wavelength of red light. This difference causes the red light color coordinate to follow the red light.
  • the gamut edge has an approximately linear movement, red light R and red laser R' mixed, can change the original red color coordinate, and draw it along the above line to the red DCI standard color coordinates (0.68, 0.32), the color gamut diagram is shown in Figure 10. Shown.
  • this method can be applied to a two-piece LCOS (Liquid Crystal) On Silicon, a liquid crystal display (LCD) projection system that distributes blue light to two LCOSs in a polarization state, which makes the energy on the two LCOSs more balanced and helps to dissipate heat.
  • LCOS Liquid Crystal
  • LCD liquid crystal display
  • the color wheel assembly 102 can also be disposed. a timing segment for emitting blue light, the first optical path for distributing the blue light, the second optical path for distributing the cyan laser, passing the first optical path and the second optical path, and simultaneously for the blue light The cyan laser is modulated; or in the color wheel assembly 102 a timing segment for emitting blue light, the second optical path for distributing the blue light, the first optical path for distributing the cyan laser, passing the first optical path and the second optical path, and simultaneously for the blue light The cyan laser is modulated.
  • the first DMD timing chart and the second DMD timing chart are as shown in FIG.
  • the light distributed to the first DMD chip 108a is blue light B and red light R among the RGB three primary colors
  • the light distributed to the second DMD chip 108b is RGB. Green light in the three primary colors of light G.
  • the band pass splitting film functions to transmit the required light and reflect the unnecessary light. When the yellow light and the blue light B emitted from the color wheel assembly 102 are incident on the band pass splitting film, the blue light is transmitted.
  • the blue-green laser C and Blu-ray B added to the blue light are distributed to different DMD chips.
  • cyan laser C and blue light B have higher energy, assigning them to different DMD chips is beneficial to each DMD.
  • the heat dissipation of the chip, the timing of processing light by each DMD chip is performed in a monolithic DMD manner. Therefore, as shown in FIG. 12, the first DMD chip 108a is required.
  • the blue signal input terminal is connected to the blue signal input end of the second DMD chip 108b while utilizing PWM
  • the controller modulates the intensity of the cyan laser to compensate for the blue color coordinates.
  • the red and red laser blends can change the original red color coordinates and compensate to the red DCI.
  • the cyan laser and the green light can change the original green color coordinate, compensate to the vicinity of the green DCI standard color coordinate, and reduce the difference between the color gamut of the three primary colors and the DCI standard color gamut.
  • the spectroscopic device may further be provided to include a third optical path.
  • the third optical path is used to modulate the blue light and the cyan laser when the color wheel assembly emits a time segment of blue light.
  • the third optical path has a third DMD chip.
  • Figure 13 shows the structure of a three-chip DMD projection system.
  • the projection system includes a light emitting device 100 and a light splitting device 400.
  • the spectroscopic device 400 is different from the spectroscopic device 300 of the above-described fourth embodiment, and is described in detail as follows: the spectroscopic device 400 includes a first DMD chip 110a.
  • the first optical path has a second optical path of the second DMD chip 110b and a third optical path having the third DMD chip 110c.
  • the light emitting device 100 includes a light source module 101 and a color wheel assembly 102.
  • the light source module 101 Including the excitation source and the compensation source.
  • the compensation light source includes a cyan laser and/or a red laser.
  • the light source module 101 is turned on in the entire timing section, that is, the light source module 101
  • the included excitation source, cyan laser, and red laser are continuously turned on throughout the projection timing.
  • the excitation source includes a first blue laser 111.
  • the cyan laser that compensates the light source is composed of a cyan laser 112
  • the red laser that compensates for the light source occurs by the red laser 113.
  • the color wheel assembly 102 is excited by the excitation light source to emit white light W throughout the time period.
  • the color wheel assembly 102 includes a full yellow wheel 123.
  • the all-yellow wheel 123 is excited by the first blue laser 111 to emit yellow light and transmits part of the blue light of the first blue laser, and the emitted yellow light and the transmitted blue light form white light. Exit.
  • the spectroscopic device 400 will the white light W
  • the blue light is distributed to the first optical path for modulation, at this time, since the blue light allocated to the first optical path is a full yellow wheel 123 Part of the projected blue laser light is the residual light after the yellow phosphor is excited, and the color gamut range is uncertain.
  • the cyan light in part of the yellow light may be distributed to the first optical path and the blue light is simultaneously modulated.
  • First DMD chip 110a modulating the blue light and the cyan light simultaneously, compensating the blue light with the cyan light, and adjusting a color gamut range of the blue light.
  • the spectroscopic device 400 distributes red light in the white light W and the red laser light to a second optical path for modulation, by the second
  • the DMD chip 110b modulates the red light and the red laser at the same time, and compensates the red light by the red laser to adjust the color gamut range of the red light.
  • the spectroscopic device 400 distributes the green light in the white light W and the cyan laser to the third optical path for modulation, through the third
  • the DMD chip 110c simultaneously modulates the green light and the cyan laser, and compensates the green light by the cyan laser to adjust the color gamut range of the green light.
  • the spectroscopic device can compensate the corresponding splitting of the split three primary colors by the compensation light source to adjust the color gamut range of the projection system.
  • the compensation light source includes a cyan laser 112 and/or a red laser 113, and a cyan laser 112.
  • red laser 113 is used for gamut compensation of red light.
  • the blue laser light emitted by the first blue laser 111 has a wavelength of 445 nm
  • the cyan laser 112 The outgoing cyan laser has a wavelength range of 510 nm to 530 nm, including the endpoint value
  • the red laser of the red laser 113 has a wavelength range of 625 nm to 645 nm. , including endpoint values.
  • the difference between the compensated system color gamut and the target standard color gamut may be within a set threshold range.
  • Standard DCI The color gamut is the target standard color gamut, and the three color light color coordinates of the target standard color gamut are: green light (0.265, 0.69), red light (0.68, 0.32), blue light (0.15, 0.06).
  • the DCI standard color gamut can be used as a color gamut adjustment standard, so that red, green, and blue light are compensated and DCI The color gamuts of the corresponding color lights in the standard color gamut are the same or similar.
  • the green light DCI color coordinate compensated by this scheme is ( 0.265 ⁇ 0.02 , 0.69 ⁇ 0.02 ), and the compensated red light
  • the DCI color coordinates are (0.68 ⁇ 0.02, 0.32 ⁇ 0.02)
  • the compensated blue DCI color coordinates are (0.15 ⁇ 0.01 , 0.06 ⁇ 0.01).
  • the full yellow wheel 123 is shown in Figure 4, including along the full yellow wheel 123
  • a yellow wavelength conversion layer is disposed in the circumferential direction, and the yellow wavelength conversion layer includes a yellow phosphor for using the compensation light source and the first blue laser 111.
  • the emitted light emits white light, and the role of the phosphor is to convert short-wavelength light into long-wavelength light.
  • the compensation light source includes a cyan laser 112 and/or a red laser 113, and the first blue laser 111
  • the dominant blue laser wavelength is preferably 445 nm
  • the cyan laser dominant wavelength emitted by the cyan laser 112 is preferably 520 nm
  • the red laser dominant wavelength emitted by the red laser 113 is preferably 638nm.
  • the first blue laser 111, the cyan laser 112, and the red laser 113 are turned on for the entire timing period, for RGB The color gamut of the light of the corresponding color in the three primary colors is compensated.
  • the light emitted by the light source module 101 is concentrated by the first collecting lens 104 and is incident on the yellow wheel 123.
  • the first blue laser 111 and the cyan laser 112 excite the yellow phosphor on the yellow wheel 123 to emit yellow light, and part of the blue laser and yellow light through the full yellow wheel 123 form white light from the full yellow wheel.
  • 123 Exit, all yellow wheels 123 The white light that exits enters the square bar 106. After the light is split, it is emitted as white light W.
  • the splitting light combining prism 109 splits the light to form RGB three primary colors, and distributes the RGB three primary colors to three different DMD chips for modulation, and then merges the light through the projection lens. 120 Forms a color image.
  • the excitation light source further includes a second blue laser 114 based on the projection system provided by the above embodiment.
  • the color wheel assembly 102 also includes a full blue wheel 124.
  • the projection system also includes a mirror 204 and a dichroic mirror 205. All blue wheel 124 pair of second blue laser 114 The emitted blue light scatters out of coherence.
  • the dichroic mirror 205 is used to filter the full yellow wheel 123 to emit blue light in the white light, so that the yellow light and the full blue wheel of the all yellow wheel 123 are emitted 124 The standard blue light that emerges forms a white light.
  • the blue light emitted from the white light W is the standard blue light emitted from the all blue wheel 124, no compensation is required in the subsequent splitting, and therefore, the spectroscopic device 400 only has the all blue wheel. 124
  • the standard blue light that is emitted is distributed to the first optical path for modulation without cyan compensation.
  • the second blue laser 114 emits a blue laser having a dominant wavelength of preferably 462 nm and a full blue wheel 124 as shown in FIG.
  • the all-blue wheel 124 is provided with a scattering layer along its circumferential direction, the scattering layer
  • the scattering powder is included for scattering and emitting incident light.
  • the scattering powder converts the blue light of the polarization state into the blue light of the non-polarization state. Therefore, the second blue laser 114 passes through the all-blue wheel 124. After the blue light.
  • the mirror 204 is used to reflect the blue light emitted from the all blue wheel 203 onto the dichroic mirror 205, and the dichroic mirror 205 is used to transmit the full yellow wheel 123.
  • the green light and the red light in the emitted white light reflect the blue light emitted from the all-blue wheel 124 to form white light W, so that the projected green and red light and the reflected blue light are incident on the spectroscopic device 400.
  • the first blue laser 111 and the cyan laser 112 in the light-emitting device 100 are used throughout the timing stage. And the red laser 113 is turned on, and at the same time, the second blue laser 114 is turned on for color gamut compensation of the split blue, green, and red light.
  • Light-emitting device 100 The emitted light is incident on the all-yellow wheel 123 after being concentrated by the first collecting lens 104, and the white light which is emitted after passing through the all-yellow wheel 123 is incident on the surface of the dichroic mirror 205, and the second blue laser 114 The emitted light is concentrated by the second collecting lens 202 and then incident on the all-blue wheel 124.
  • the blue light that has exited the all-blue wheel 124 is incident on the surface of the mirror 204, and the mirror 204
  • the blue light is reflected to the surface of the dichroic mirror 205, and the blue light and the red and red light transmitted by the dichroic mirror 205 are mixed to form white light, and the white light enters the square rod 106 for uniform light, and then passes through the relay system 107 and
  • the TIR prism 108 enters the beam splitting prism 109, and the splitting and combining prism 109 splits the light to form RGB three primary colors, and distributes the RGB three primary colors to three different DMDs. Modulation is performed on the chip, and after combining light, a color image is formed through the projection lens 120.
  • the spectroscopic device 400 includes: a TIR prism 108, a beam splitting prism 109, and a first DMD chip 110a, a second DMD chip 110b, a third DMD chip 110c, and a projection lens 120; wherein the TIR prism 108 is used to turn the yellow wheel 123
  • the white light emitted from the white light or the dichroic mirror is reflected to the splitting light combining prism 109, and the splitting light combining prism 109 is used to split the white light to form RGB three primary colors and distribute them to the first DMD chip.
  • the 110a, the second DMD chip 110b, and the third DMD chip 110c are modulated, and the modulated RGB three primary colors are combined and reflected to the projection lens 120. .
  • the light splitting prism 109 Specifically, the first prism, the second prism, and the third prism have a first beam splitting film between the first prism and the second prism, and a second beam splitting film between the second prism and the third prism, and the first beam splitting film is used for distributing RGB
  • the blue light in the three primary colors is on the first DMD chip 110a
  • the second splitting film is used to respectively distribute the red and green light in the RGB three primary colors to the second DMD chip 110b and the third DMD.
  • chip 110c On chip 110c.
  • the first blue laser 111 and the cyan laser 112 are used throughout the timing period. And the red laser 113 is turned on, and the white light emitted by the all-yellow wheel 123 is homogenized by the square rod, and then incident on the TIR prism 108 through the optical relay system 107, passing through the TIR prism.
  • the reflection of 108 reaches the surface of the first beam splitting film of the beam splitting prism 109, and the first beam splitting film reflects the blue light and the cyan light in part of the yellow light reaches the first DMD chip 110a Modulating, transmitting yellow light to the surface of the second beam splitting film, reflecting red light and red laser light in the yellow light on the surface of the second beam splitting film to reach the second DMD chip 110b, and transmitting the green light in the cyan laser and the yellow light to the third
  • the DMD chip 110c is modulated, and the DMD-modulated light is combined at the first beam splitting film and the second beam splitting film to reach the projection lens 120. And eventually into a color image.
  • the blue light in the blue light and the yellow light can change the original blue light color coordinate.
  • the coating difference or the first light splitting film of different projection systems is divided.
  • Photosynthetic prism The assembly difference of 109 results in a difference in the cyan wavelength range of the first spectroscopic film, so the blue color coordinates obtained by mixing the blue light and the different cyan light are a small color gamut range, and the color gamut range is in the DCI. Standard blue color coordinates ( 0.15 , 0.06 The vicinity of the green-green laser and the green light in the yellow light can change the original green color coordinate.
  • the compensated green color coordinate is a small color gamut range ( 0.265 ⁇ 0.02 , 0.69 ⁇ 0.02 ), this color gamut is in DCI standard green color coordinates ( 0.265 , 0.69 Near the red light and the red laser, the red color coordinates can be pulled along the line (0.68 ⁇ 0.02, 0.32 ⁇ 0.02), close to the DCI standard red color coordinates (0.68) , 0.32), its color gamut is shown in Figure 16.
  • the color gamut range is compensated by adding a compensation light source, and the cyan light in the yellow fluorescence is used to compensate the blue color coordinate, 520 nm Cyan laser is used to compensate for green color coordinates, 638nm
  • the red laser is used to compensate for the red color coordinates.
  • the 638nm red laser can compensate the red color coordinates to (0.68 ⁇ 0.02, 0.32 ⁇ 0.02), which is very close to the DCI standard red color coordinates (0.68, 0.32).
  • the first blue laser 111 in the illumination device 100 is used throughout the timing phase.
  • the cyan laser 112 and the red laser 113 are both turned on, and at the same time, the second blue laser 114 is turned on for RGB Blue, green, and red light in the three primary colors are compensated for color gamut.
  • the white light emitted from the dichroic mirror 205 enters the square rod 106 for homogenization, and then passes through the optical relay system 107 and the TIR prism 108 in sequence.
  • the TIR prism 108 reflects white light to the surface of the first beam splitting film in the beam splitting prism 109, and the first beam splitting film reflects blue light to the first DMD chip 110a.
  • the color coordinates of blue light as a blue light in the projection system are (0.15 ⁇ 0.01, 0.06 ⁇ 0.01) in DCI standard blue color coordinates ( 0.15 , 0.06 ), so the blue light is not compensated; the 520nm cyan laser is mixed with the green light separated by the yellow light, and the green light color coordinates are along the edge of the green color gamut due to the difference in the process of filtering out the long wavelength of the green light. a straight line
  • the color coordinates of the 520nm cyan laser compensation are (0.265 ⁇ 0.02, 0.69 ⁇ 0.02), which is close to the DCI green color coordinates (0.265, 0.69).
  • the 638nm red laser is mixed with the red light separated by the yellow light.
  • the difference between the red light and the short wavelength is filtered so that the red color coordinate is a straight line along the edge of the red color gamut.
  • the red laser compensated color coordinates are (0.68 ⁇ 0.02, 0.32 ⁇ 0.02) close to the DCI standard red color coordinates (0.68, 0.32). Therefore, the blue, green and red color coordinates can be well compensated, and the color gamut is shown in Figure 17.
  • the first blue laser 111 and the second blue laser 114 are used as two sets of excitation light sources, and the second blue laser
  • the 462nm blue laser in 114 can meet the color gamut standard as the blue color coordinate of the projection system. 445nm in the illuminating device 100
  • the blue laser is used to excite the yellow phosphor to produce yellow light to separate the green and red light
  • the 520 nm cyan laser is used to compensate for the green light
  • the 638 nm red laser is used to compensate the red light, which can be compensated to a DCI.
  • the projection system of the embodiment of the present application can adjust the color gamut range by using the compensation light source, so that the color gamut range of the projection system can be set.
  • the color gamut is a compensation criterion such that the color gamut of the projection system is the same or similar to the standard DCI color gamut.

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Abstract

一种发光装置,包括:光源模组(101),包括出射激发光的激发光源(111)和出射补偿光的补偿光源(112);色轮组件(102),包括沿色轮组件(102)的运动方向分布的至少一分段区域,且色轮组件(102)在激发光源(111)和补偿光源(112)的照射下出射补偿光和包括至少一受激光的第一光;其中补偿光与第一光中的至少一受激光存在光谱重叠,补偿光和与补偿光存在光谱重叠的受激光同时出射且可相互独立调节。还提供一种包括该发光装置的投影系统。

Description

发光装置和投影系统 技术领域
本实用新型涉及光学技术领域,更具体地说,涉及发光装置和投影系统。
背景技术
现有技术提供了一种半导体激光器激发沿色轮组件的运动方向上设置的不同波长转换层和 / 或散射层 以形成不同基色光的投影系统用发光装置,该发光装置具有光效高,光学扩展量小的优势,因此发展迅速,成为单片式、两片式以及三片式投影系统用发光装置的理想选择。
在现有的单片式投影系统中,一般采用蓝光激光器照射包含三个分段区域的色轮组件来依序出射蓝光、绿光和红光的发光装置,其中包含三个分段区域的色轮组件包括沿该色轮组件的运动方向分布的设有蓝光散射层 的分段区域、设有绿光波长转换层的分段区域以及设有红光波长转换层的分段区域。
在现有的两片式投影系统中,一般采用蓝光激光器照射包含两个分段区域的色轮组件来依序出射蓝光和黄光的发光装置,其中包含两个分段区域的色轮组件包括沿该色轮组件的运动方向分布的设有蓝光散射层 的分段区域和设有黄光波长转换层的分段区域。
在现有的三片式投影系统中,一般采用蓝光激光器照射沿色轮组件的运动方向均分布有黄光波长转换层的色轮组件来产生白光的发光装置。
技术问题
上述单片式、两片式或者三片式投影系统所使用的发光装置中,由于波长转换层中包含的波长转换材料的光转换效率低或者其他原因可能导致该发光装置出射的光中,某些基色光,如红光、绿光或者蓝光的色坐标以及色域与要求的色坐标以及色域标准,如 DCI 或者 REC.709 色域标准发生偏差,导致降低投影图像的质量。
技术解决方案
有鉴于此,本实用新型提供了一种发光装置及投影系统,以解决现有的投影系统所达到的色域与要求的标准色域存在偏差的问题。
第一方面,提供一种发光装置,包括:
光源模组,包括出射激发光的激发光源和出射补偿光的补偿光源;
色轮组件,包括沿所述色轮组件的运动方向分布的至少一分段区域,且所述色轮组件在所述激发光源和所述补偿光源的照射下出射所述补偿光和包括至少一受激光的第一光;
其中所述补偿光与所述第一光中的至少一受激光存在光谱重叠,所述补偿光在与所述补偿光存在光谱重叠的受激光出射的时段内出射,且所述补偿光和与所述补偿光存在光谱重叠的受激光可相互独立调节。
优选的,所述补偿光源出射的所述补偿光的时序与所述色轮组件在所述激发光源的照射下出射的与所述补偿光存在光谱重叠的受激光的时序相同。
优选的,所述至少一分段区域中的至少一分段区域设有波长转换层,所述波长转换层吸收所述激发光可出射受激光。
优选的,所述补偿光源在所述激发光源照射到所述色轮组件的设有吸收所述激发光可出射与所述补偿光存在光谱重叠的受激光的波长转换层的分段区域时开启,在所述激发光源照射到剩余分段区域时关闭。
优选的,所述至少一分段区域中的未设有波长转换层的至少一个分段区域设有散射层 ,所述散射层 对所述激发光源出射的激发光进行散射并出射。
优选的,所述补偿光源在所述激发光源照射到所述色轮组件的设有吸收所述激发光可出射受激光的波长转换层的分段区域以及设有散射层 的分段区域时开启,在所述激发光源照射到剩余分段区域时关闭。
优选的,所述激发光源在所述色轮组件的所有分段区域均开启,或者,
所述光源模组还包括出射第三光的第三光源,所述第三光与所述激发光为同色异谱的光,所述激发光源在所述色轮组件的设有波长转换层的分段区域开启,在其余分段区域关闭,所述第三光源在所述色轮组件的设有散射层 的分段区域开启,在其余分段区域关闭。
优选的,所述补偿光源包括出射红光的红激光光源和 / 或出射青绿光的青绿激光光源,所述激发光源为出射蓝光的蓝激光光源。
优选的,所述激发光源出射的蓝光的主波长为 445nm ,所述青绿激光光源出射的青绿光的主波长为 510nm-530nm 之间的任意值,包括端点值,所述红激光光源出射的红光的主波长为 625nm-645nm 之间的任意值,包括端点值。
优选的,所述青绿激光光源出射的青绿光的主波长为 520nm ,所述红激光光源出射的红光的主波长为 638nm 。
优选的,所述发光装置还包括:
控制装置,通过控制所述补偿光源的输出功率和所述激发光源的输出功率来控制所述补偿光和与所述补偿光存在光谱重叠的受激光的比例。
优选的,所述控制装置还包括:
亮度控制单元,用于等比例的提高或者降低所述补偿光和与所述补偿光存在光谱重叠的受激光的亮度。
优选的,所述控制装置还包括:
PWM 控制器,所述 PWM 控制器用于控制所述青绿激光光源和 / 或红激光光源出射的激光的发光强度。
优选的,所述色轮组件在所述激发光源的照射下出射时序的红光、绿光和蓝光;
所述补偿光源包括青绿激光和 / 或红激光,所述补偿光源的青绿激光的时序与所述色轮组件出射的蓝光以及绿光的时序相同,所述补偿光源的红激光的时序与所述色轮组件出射的红光时序相同。
优选的,所述色轮组件包括荧光轮以及与所述荧光轮同步旋转的滤光轮,其中:
所述荧光轮包括绿色荧光区域、蓝色散射区域以及红色荧光区域;
所述滤光轮包括与所述绿色荧光区域对应设置的绿色滤光区域,与所述红色荧光区域对应设置的红色滤光区域。
优选的,所述绿色荧光区域表面设置有绿色荧光粉,所述蓝色散射区域表面设置有散射粉,所述红色荧光区域表面设置有红色荧光粉。
优选的,所述绿色滤光区域用于滤除所述绿色荧光区域出射的光中的部分短波长和部分长波长的光,所述短波长的范围为 460nm-490nm ,包括端点值,所述长波长的范围为 590nm-600nm ,包括端点值;
所述红色滤光区域用于滤除所述红色荧光区域出射的光中的部分长波长的光,所述长波长的范围为 590nm-600nm ,包括端点值。
优选的,所述色轮组件在所述激发光源的激励下出射时序的蓝光和黄光;
所述补偿光源包括青绿激光和 / 或红激光;所述补偿光源的青绿激光在所述色轮组件的整个时序段打开,所述补偿光源的红激光时序与所述色轮组件出射的黄光时序相同。
优选的,所述色轮组件在整个时序段受激发光源的激励出射白光;
所述补偿光源包括青绿激光和 / 或红激光,所述光源模组包括的激发光源和补偿光源均在整个时序段打开。
优选的,所述激发光源包括第一蓝光激光器,所述色轮组件包括全黄色轮,所述全黄色轮受所述第一蓝光激光器激励出射黄光以及透射部分所述第一蓝光激光器的蓝光,出射的黄光与透射的蓝光形成白光出射。
优选的,所述激发光源还包括第二蓝光激光器,所述色轮组件还包括全蓝色轮以及二向色镜,
所述全蓝色轮对所述第二蓝光激光器出射的蓝光散射消相干;
所述二向色镜用于过滤所述全黄色轮出射白光中的蓝光,使得所述全黄色轮出射的黄光与所述全蓝色轮出射的标准蓝光形成白光出射。
优选的,所述第二蓝光激光器出射的蓝激光的主波长为 462nm 。
第二方面,提供一种投影系统,包括上述发光装置。
优选的,所述投影系统还包括成像组件,其中:
所述成像组件包括 TIR 棱镜、 DMD 芯片以及投影镜头,所述 TIR 棱镜用于将所述色轮组件出射的光导入所述 DMD 芯片上,并将所述 DMD 芯片出射的成像光导入所述投影镜头中。
优选的,所述投影系统还包括分光装置,所述分光装置包括:
第一光路与第二光路,在所述色轮组件的黄光时序时,所述分光装置用于将所述黄光分为绿光与红光;其中,分光后的绿光与所述补偿光源的青绿激光通过第一光路进行调制,分光后的红光与所述补偿光源的红激光通过第二光路进行调制。
优选的,在所述色轮组件出射蓝光的时序段,通过所述第一光路或者所述第二光路对所述蓝光与所述青绿激光进行调制。
优选的,在所述色轮组件出射蓝光的时序段,所述第一光路用于分配所述蓝光,所述第二光路用于分配所述青绿激光,通过所述第一光路与所述第二光路,同时对所述蓝光与所述青绿激光进行调制。
优选的,所述分光装置还包括:第三光路,在所述色轮组件出射蓝光的时序段时,所述第三光路用于对所述蓝光与所述青绿激光进行调制。
优选的,当所述色轮组件在整个时序段内受激发光源的激励出射白光时,所述投影系统还包括分光装置,所述分光装置将所述白光中的蓝光分配至第一光路进行调制,将所述白光中的红光以及所述红激光分配至第二光路进行调制,将所述白光中的绿光与所述青绿激光分配至第三光路进行调制。
优选的,所述分光装置将所述白光中的蓝光分配至第一光路进行调制时,还将部分黄光中的青光分配至所述第一光路与所述蓝光同时进行调制。
有益效果
与现有技术相比,本实用新型所提供的技术方案具有以下优点:
本实用新型通过增加补偿光源,且该补偿光源出射的补偿光与色轮组件在激发光源的照射下出射的受激光存在光谱重叠,且该补偿光与色轮组件在激发光源的照射下出射的与该补偿光存在光谱重叠的受激光同时出射且可相互独立调节,通过将该补偿光与受激光进行合光即可调节该受激光所对应的基色光的色坐标,进而调节采用该发光装置的投影系统的色域。
附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本实用新型的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图 1 为本实用新型实施例提供的发光装置的结构示意图;
图 2 为本实用新型实施例提供的色轮组件的分段区域示意图;
图 3 为本实用新型另一实施例提供的色轮组件的分段区域示意图;
图 4 为本实用新型另一实施例提供的色轮组件的分段区域示意图;
图 5 为本实用新型另一实施例提供的发光装置的结构示意图;
图 6 为本实用新型实施例提供的单片式 DMD 投影系统的结构示意图;
图 7 为本实用新型实施例提供的图 6 所示的投影系统的色域图;
图 8 为本实用新型实施例提供的两片式 DMD 投影系统的结构示意图;
图 9 为本实用新型实施例提供的采用低通分光膜时第一 DMD 芯片 108a 时序图和第二 DMD 芯片 108b 的时序图;
图 10 为本实用新型实施例提供的图 8 所示的投影系统的色域图;
图 11 为本实用新型实施例提供的采用带通分光膜时第一 DMD 芯片 108a 时序图和第二 DMD 芯片 108b 的时序图;
图 12 为本实用新型实施例提供的采用带通分光膜时第一 DMD 芯片 108a 和第二 DMD 芯片 108b 的图像信号连接图;
图 13 为本实用新型实施例提供的三片式 DMD 投影系统的结构示意图;
图 14 为本实用新型另一实施例提供的三片式 DMD 投影系统的结构示意图;
图 15 为本实用新型实施例提供的全蓝色轮的分段区域分布示例图;
图 16 为本实用新型实施例提供的图 13 所示的投影系统的色域图;
图 17 为本实用新型实施例提供的图 14 所示的投影系统的色域图。
本发明的最佳实施方式
本实用新型提供了一种发光装置,包括:
光源模组,包括出射激发光的激发光源和出射补偿光的补偿光源;
色轮组件,包括沿所述色轮组件的运动方向分布的至少一分段区域,且所述色轮组件在所述激发光源和所述补偿光源的照射下出射所述补偿光和包括至少一受激光的第一光;
其中所述补偿光与所述第一光中的至少一受激光存在光谱重叠,所述补偿光和与所述补偿光存在光谱重叠的受激光同时出射,且所述补偿光和与所述补偿光存在光谱重叠的受激光可相互独立调节。
本实用新型还提供了一种包括上述发光装置的投影系统。
以上是本实用新型的核心思想,为使本实用新型的上述目的、特征和优点能够更加明显易懂,下面结合附图对本实用新型的具体实施方式做详细的说明。
在下面的描述中阐述了很多具体细节以便于充分理解本实用新型,但是本实用新型还可以采用其他不同于在此描述的其它方式来实施,本领域技术人员可以在不违背本实用新型内涵的情况下做类似应用,因此本实用新型不受下面公开的具体实施例的限制。
其次,本实用新型结合示意图进行详细描述,在详述本实用新型实施例时,为便于说明,表示器件结构的剖面图会不依一般比例作局部放大,而且所述示意图只是示例,其在此不应限制本实用新型保护的范围。此外,在实际制作中应包含长度、宽度及深度的三维空间尺寸。
下面通过几个实施例详细描述。
实施例一
本实施例提供了一种发光装置,如图 1 所示,该发光装置包括光源模组 101 ,该光源模组 101 包括出射激发光的激发光源 111 和出射补偿光的补偿光源 112 。
该发光装置还包括位于激发光源 111 出射的激发光以及补偿光源 112 出射的补偿光的传输光路中的色轮组件 102 。该色轮组件 102 在激发光源 111 出射的激发光和补偿光源 112 出射的补偿光的照射下出射补偿光和包括至少一受激光的第一光。其中补偿光与第一光中的至少一受激光存在光谱重叠,且补偿光和与补偿光存在光谱重叠的受激光同时出射,且补偿光和与补偿光存在光谱重叠的受激光可相互独立调节。
具体的,该色轮组件 102 包括沿该色轮组件 102 的运动方向分布的至少一分段区域。其中该色轮组件 102 的运动方向包括但不限于圆周运动或者水平或者垂直运动。该色轮组件 102 包括的至少一分段区域中至少其中一分段区域设有包括波长转换材料的波长转换层,另一分段区域设有包括散射材料的散射层 。其中波长转换材料吸收激发光源 111 出射的激发光可出射受激光,散射材料可以对入射的光进行散射并出射。波长转换材料可以是荧光粉、量子点等。散射材料可以是散射粉等。
优选的,该色轮组件 102 包括的至少一分段区域中至少一分段区域所设置的波长转换层能够吸收激发光源 111 出射的激发光而出射与补偿光存在光谱重叠的受激光。如当补偿光源 112 为红激光光源时,该色轮组件 102 包括设有红光波长转换层的至少一个分段区域;当补偿光源 112 为青绿激光光源时,该色轮组件 102 包括设有绿光波长转换层的至少一个分段区域,以此类推,还可以为其它形式,在此不再一一例举。
在本实施例中,补偿光和与补偿光存在光谱重叠的受激光同时出射的具体实现方式可以如下:使补偿光源出射的补偿光的时序与色轮组件在激发光源照射下出射的与补偿光存在光谱重叠的受激光的时序相同。具体的,该补偿光源 112 在色轮组件 102 的设有吸收激发光可出射与补偿光存在光谱重叠的受激光的波长转换层的分段区域开启,在剩余分段区域关闭。举例说明如下:
假设补偿光为红光,则补偿光源 112 出射的红光的时序与色轮组件 102 在激发光源出射的激发光的照射下出射的红光的时序相同。具体的,可以在色轮组件 102 的设有吸收激发光源 111 出射的激发光可出射红光的波长转换层的分段区域位于激发光源和补偿光源的输出光路中时,同时开启激发光源 111 和补偿光源 112 ,在其余分段区域关闭补偿光源 112 。这样,可以使该补偿光源 112 出射的红光的时序与色轮组件 102 在激发光源 111 照射下出射的红光的时序相同。
在本实用新型一实施例中,激发光源 111 在色轮组件 102 的所有分段区域均开启,这样,当色轮组件 102 的设有散射层 的分段区域位于激发光源 111 的传输光路中时,该激发光源 111 出射的激发光入射至该散射层 ,经散射层 散射并出射。
在本实用新型另一实施例中,该光源模组还包括出射第三光的第三光源(图未示出),该第三光源出射的第三光与激发光源 111 出射的激发光为同色异谱的光。该第三光源在色轮组件 102 的设有散射层 的分段区域开启,在其余分段区域关闭,该激发光源 111 在色轮组件 102 的设有波长转换层的分段区域开启,在其余分段区域关闭。其中同色异谱的光是指所呈现出来的颜色相同但具有不同的光谱的光。
其中激发光源 111 可以为蓝光光源,如蓝激光光源或者蓝 LED 光源等,该激发光源 111 出射的蓝光的主波长可以为 445nm 。补偿光源 112 包括出射红光的红激光光源和 / 或出射青绿光的青绿激光光源。其中青绿激光光源出射的青绿光的主波长可以为 510nm-530nm 之间的任意值,包括端点值,优选的,该青绿光的主波长为 520nm 。红激光光源出射的红光的主波长可以为 625nm-645nm 之间的任意值,包括端点值,优选的红激光光源出射的红光的主波长为 638nm 。第三光源为出射主波长与激发光源 111 出射的蓝光的主波长不同的蓝光的蓝激光光源,如第三光源出射的蓝光的主波长可以为 462nm 。
请参阅图 2 至 4 ,为本实用新型实施例提供的色轮组件 102 上的各分段区域的分布示例图,但色轮组件 102 上的各分段区域的分布不以图 2 至 4 所示为限。
在图 2 中,该色轮组件 102 为圆盘状,该色轮组件 102 包括沿其圆周运动方向分别设置的设有散射层 的分段区域(称为蓝色散射区域) 1021 、设有绿光波长转换层的分段区域(称为绿色荧光区域) 1022 以及设有红光波长转换层的分段区域(称为红色荧光区域) 1023 。
若光源模组包括激发光源 111 和补偿光源 112 ,其中补偿光源 112 包括青绿激光光源和红激光光源,则在色轮组件 102 的设有红光波长转换层的分段区域开启激发光源 111 和红激光光源,设有绿光波长转换层的分段区域开启激发光源 111 和青绿激光光源,设有散射层 的分段区域开启激发光源 111 ,或者设有散射层 的分段区域开启激发光源 111 和青绿激光光源,从而使色轮组件 102 的设有红光波长转换层的分段区域同时出射红受激光和红激光,设有绿光波长转换层的分段区域同时出射绿受激光和青绿激光,设有散射层 的分段区域出射蓝光,或者同时出射蓝光和青绿激光。
若光源模组包括激发光源 111 ,补偿光源 112 以及第三光源,则在色轮组件 102 的设有红光波长转换层的分段区域开启激发光源 111 和红激光光源,在设有绿光波长转换层的分段区域开启激发光源 111 和青绿激光光源,在设有散射层 的分段区域开启第三光源,或者在设有散射层 的分段区域开启第三光源和青绿激光光源,从而使设有红光波长转换层的分段区域同时出射红受激光和红激光,设有绿光波长转换层的分段区域同时出射绿受激光和绿激光,设有散射层 的分段区域出射第三光,或者设有散射层 的分段区域同时出射第三光和青绿激光,该第三光为蓝光。
在图 3 中,该色轮组件 102 为圆盘状,该色轮组件 102 包括沿其圆周运动方向分别设置的设有黄光波长转换层的分段区域(也称为黄色荧光区域) 1024 ,以及设有散射层 的分段区域(也称为蓝光散射区域) 1025 。
若光源模组 101 包括激发光源 111 和补偿光源 112 ,且补偿光源 112 包括青绿激光光源和红激光光源,则在色轮组件 102 的设有黄光波长转换层的分段区域开启激发光源 111 ,以及红激光光源和 / 或青绿激光光源,在设有散射层 的分段区域开启激发光源 111 ,或者激发光源 111 和青绿激光光源,从而使色轮组件 102 的设有黄光波长转换层的分段区域同时出射黄光和红光,或者同时出射黄光和青绿光,或者同时出射黄光、红光和青绿光,设有散射层 的分段区域出射蓝光,或者同时出射蓝光和青绿光。
若光源模组包括激发光源 111 ,补偿光源 112 和第三光源,则在色轮组件 102 的设有黄光波长转换层的分段区域开启激发光源 111 ,以及青绿激光光源和 / 或红激光光源;在色轮组件 102 的设有散射层 的分段区域,开启第三光源,或者开启第三光源和青绿激光光源,从而使色轮组件 102 的设有黄光波长转换层的分段区域同时出射黄光和红光,或者同时出射黄光和青绿光,或者同时出射黄光、红光和青绿光,设有散射层 的分段区域出射蓝光,或者同时出射蓝光和青绿光。
在图 4 中,该色轮组件 102 为圆盘状,该色轮组件 102 为纯色段色轮,即在色轮组件 102 的圆周方向上全部设置包括黄光波长转换材料的黄光波长转换层。
若光源模组包括激发光源 111 和补偿光源 112 ,则在色轮组件 102 的整个运动周期内开启激发光源 111 ,以及红激光光源和 / 或青绿激光光源,从而使色轮组件 102 同时出射黄光、蓝光和红光,或者黄光、蓝光和青绿光,或者黄光、蓝光、红光和青绿光。
若光源模组包括激发光源 111 ,补偿光源 112 和第三光源,则在色轮组件 102 的整个运动周期内开启激发光源 111 ,第三光源,以及红激光光源和 / 或青绿激光光源,从而使色轮组件 102 同时出射黄光、第三光(其为蓝光)和红光,或者黄光、第三光(其为蓝光)和青绿光,或者黄光、第三光(其为蓝光)、红光和青绿光。
实施例二
图 5 示出了本实用新型另一实施例提供的发光装置的结构。该发光装置与实施例一中所述的发光装置的区别在于还包括控制装置 14 。其余部分与实施例一相同,因此,此实施例中未详细描述的部分参考上述实施例一。
该控制装置 14 对激发光源 111 和补偿光源 112 进行控制。该控制装置 14 通过控制补偿光源 112 的输出功率和激发光源 111 的输出功率来控制补偿光和与补偿光存在光谱重叠的受激光的比例。其中控制补偿光源 112 的输出功率和激发光源 111 的输出功率的比例可以为控制补偿光源 112 的光强和激发光源 111 的光强比例。如可以通过增大或者减小补偿光源 112 或者激发光源 111 的电流来实现光强变化。由于补偿光源 112 和激发光源 111 可独立调节,因此,通过该控制装置 14 可以控制补偿光和与补偿光存在光谱重叠的受激光的比例为任意比值。
优选的,该控制装置 14 还包括 PWM 控制器(图未示出),该 PWM 控制器用于控制青绿激光光源和 / 或红激光光源出射的激光的发光强度。在本实施例中,在控制青绿激光光源和 / 或红激光光源出射的激光的发光强度时,可以在不同的时段,控制青绿激光光源和 / 或红激光光源出射不同发光强度的激光,比如,当在色轮组件的设有绿光波长转换层以及散射层 的分段区域均开启青绿激光光源时,可以控制该青绿激光光源在色轮组件的设有绿光波长转换层分段区域所出射的激光的发光强度和在设有散射层 的分段区域所出射的激光的发光强度不同。
优选的,该控制装置 14 还包括亮度控制单元(图未示出),该亮度控制单元用于等比例的提高或者降低补偿光和与补偿光存在光谱重叠的受激光的亮度。其中等比例的提高或者降低亮度的具体实现方式可以为等比例的提高或者降低补偿光源 112 和激发光源 111 的电流。
实施例三
请参考图 6 ,图 6 为一种单片式 DMD 投影系统的结构示意图,该投影系统包括发光装置 100 和成像组件 200 。其中发光装置 100 为上述实施例一或者实施例二中的任意一种,优选的,该发光装置 100 中的色轮组件为图 2 所示的色轮组件。简述如下,未详细描述的部分参考上述实施例一或者实施例二。
发光装置 100 包括光源模组 101 ,该光源模组 101 通常选用半导体激光器,光源模组 101 包括激发光源及补偿光源,还可以包括第三光源。补偿光源包括青绿激光光源和 / 或红激光光源。补偿光源的青绿激光时序与色轮组件 102 出射的蓝光和绿光时序相同,补偿光源的红激光时序与色轮组件 102 出射的红光时序相同。
激发光源是蓝光激光器 112 ,其出射的蓝激光主波长为 445nm 。补偿光源的青绿激光由青绿光激光器 113 发生,补偿光源的红激光由红光激光器 111 发生。青绿光激光器 113 出射的青绿激光的主波长优选为 510nm-530nm 之间任意值,包括端点值,红光激光器 111 出射的红激光的主波长优选为 625nm-645nm 之间的任意值,包括端点值。本实施例中,优选的青绿激光的主波长为 520nm ,红激光的主波长为 638nm 。
在本实施例中,通过增加补偿光源,用于对色轮组件 102 出射的 RGB 三基色光进行补偿,其中红激光用于对红光进行色坐标调整,青绿激光用于对蓝光和绿光进行色坐标调整,从而可以调整红光、绿光以及蓝光的色坐标,进而改变采用该发光装置的投影系统的色域范围。
在实施例中,优选的将 DCI 标准色域作为补偿标准,通过调整补偿光源,可以将色轮组件出射的红光、绿光以及蓝光与 DCI 标准色域中对应颜色光的标准色域相同或是相近,以减小出射光的色域与 DCI 标准色域的差值,其中,青绿光激光器 113 用于对 RGB 三基色光中的蓝光与绿光进行色域补偿,红光激光器 111 用于对所述 RGB 三基色光中的红光进行色域补偿,可以使得补偿后的绿光 DCI 色坐标为( 0.265 ± 0.02 , 0.69 ± 0.02 ),补偿后的红光 DCI 色坐标为( 0.68 ± 0.02 , 0.32 ± 0.02 ),补偿后的蓝光 DCI 色坐标为( 0.15 ± 0.01 , 0.06 ± 0.01 )。
色轮组件 102 包括荧光轮 121 和与荧光轮 121 同步旋转的滤光轮 122 ,其中荧光轮 121 的分段区域如图 2 所示,该荧光轮 121 为三色段色轮,包括设有散射层 的分段区域(称为蓝色散射区域) 21 、设有绿光波长转换层的分段区域(称为绿色荧光区域) 22 以及设有红光波长转换层的分段区域(称为红色荧光区域) 23 ,滤光轮 122 包括与绿色荧光区域 22 对应设置的绿色滤光区域,以及与红色荧光区域 23 对应设置的红色滤光区域,色轮组件 102 还包括驱动装置,如马达等,用于驱动荧光轮 121 和滤光轮 122 同步旋转。其中,绿色荧光区域 22 表面设置有绿色荧光粉,蓝色散射区域 21 表面设置有散射粉,红色荧光区域 23 表面设置有红色荧光粉,荧光粉的作用是将短波长的光转换为长波长的光;滤光轮 122 上的滤光区域通常为滤光片,本实施例中蓝色激光通过旋转的荧光轮 121 产生时序的 RGB 三基色光,出射的蓝光为窄带光谱的光,与蓝色激光相同,而红光和绿光为宽带光谱的光,为了提高色纯度,滤光轮 122 主要对红光和绿光进行滤光,绿色滤光片用于滤除绿光部分波长范围在 460nm-490nm 之间和大于 590nm 的绿光,波长范围包括端点值,红色滤光片用于滤除波长小于等于 600nm 的红光。
由于所述色轮组件 102 出射的红光、绿光以及蓝光是时序的,因此,可以采用一个 DMD 依次对三种光进行调制即可。故本实施例中优选的采用具有单片式 DMD 的成像组件:包括 TIR 棱镜 106 、 DMD 芯片 105 以及投影镜头 107 , TIR 棱镜 106 用于将色轮组件 102 出射的光反射到 DMD 芯片 105 上,并将 DMD 芯片 105 出射的成像光反射到投影镜头 107 中。具有单片式 DMD 的成像组件用于将色轮组件 102 出射的各基色光进行调制,以形成彩色图像。在其他实施方式中,还可以采用三片 DMD 的成像组件,一个 DMD 单独调制 RGB 中的一种光;也可以采用双片 DMD 的成像组件,其中,一个 DMD 调制 RGB 中的一种光,另一个 DMD 调制 RGB 中的其它两种光。
本实施例中,蓝光激光器 112 的蓝色激光的主波长为 445nm ,补偿光源的青绿光激光器 113 发射主波长为 520nm 青绿激光和红光激光器 111 发射主波长为 638nm 红激光。当色轮组件 102 在蓝色时序段时,青绿光激光器 113 和蓝光激光器 112 打开,蓝激光和青绿激光通过蓝色散射区 21 产生蓝光和青绿激光的混合光;当色轮组件 102 在绿色时序段时,青绿光激光器 113 和蓝光激光器 112 打开,蓝激光和青绿激光通过绿色荧光区域 22 产生绿光和青绿激光的混合光,并通过绿色滤光片进行滤光;当色轮组件 102 在红色时序段时,红光激光器打开,红激光通过红色荧光区域 23 产生红光和红激光的混合光,通过红色滤光片进行滤光。过滤后出射的光经过方棒 103 匀光后,再经过光中继系统 104 入射到 TIR 棱镜 106 上,反射到 DMD 芯片 105 上进行调制,经过投影镜头 107 最终输出图像。
本实施例中,可以使得补偿后的系统色域与目标标准色域的差值在设定的阈值范围。以标准 DCI 色域为所述目标标准色域,所述目标标准色域的三色光色坐标分别是:绿光( 0.265 , 0.69 ),红光( 0.68 , 0.32 ),蓝光( 0.15 , 0.06 )。
如图 7 所示,图 7 为本实用新型实施例提供的一种投影系统的色域图。蓝光和青绿激光混合能够改变原来蓝光色坐标,混合后的蓝光色坐标为( 0.15 ± 0.01,0.06 ± 0.01 ),接近蓝光 DCI 标准色坐标( 0.15 , 0.06 );绿光和青绿激光混合能够改变原来绿光色坐标,沿着其色坐标分布区域的边界将其拉近到与 DCI 色域三角形边长相交的地方,形成从 laser+phosphor 色域三角形的上顶点至 DCI 色域三角形上顶点之间的线段,该线段就在绿光 DIC 标准色坐标( 0.265 , 0.69 )的附近;红光和红色激光混合,混和后得到红光色坐标为( 0.68 ± 0.02,0.32 ± 0.02 ),达到了沿直线将红光色坐标拉近到红光 DCI 标准色坐标( 0.68 , 0.32 )的附近效果。
本实用新型通过增加青绿光激光器 113 和 / 或红光激光器 111 ,来对色轮组件 102 出射的 RGB 三基色光进行色域补偿,青绿激光用于补偿蓝光色坐标和绿光色坐标,红色激光用于补偿红光色坐标,将原有的色坐标补偿在 DCI 标准色坐标的附近,使得每台投影仪的色域都补偿到 DCI 的标准,其色域基本一致,由于增加了光输入,提高了色域范围,增加了彩色图像的亮度。
所述发光装置还包括 PWM 控制器(脉冲宽度调制控制器), PWM 控制器通过脉冲宽度调制控制方法对青绿光激光器 113 和 / 或红光激光器 111 的出射光的发光强度进行自动时序的调控。
在本申请实施例中,通过设置所述补偿光源对对应颜色的光进行补偿,可以调整系统的色域范围。如上述可以以 DCI 标准色域为补偿标准进行调整,对所述投影系统的色域校正。
通过上述描述可知,本申请实施例所述投影系统在色轮组件出射时序的红光、绿光以及蓝光。通过设置所述补偿光源的时序,使得所述补偿光源的青绿激光时序与所述色轮组件出射的蓝光和绿光时序相同,所述补偿光源的红色激光时序与所述色轮组件出射的红光时序相同。从而可以通过青绿激光对蓝光与绿光进行补偿,通过红色激光对红光进行补偿,以调整投影系统的色域到设定的范围。
实施例四
请参考图 8 ,图 8 为一种两片式 DMD 投影系统的结构示意图。该投影系统包括发光装置 100 和具有双片 DMD 芯片的分光装置 300 。
发光装置 100 包括光源模组 101 和色轮组件 102 ,该光源模组 101 包括激发光源 1111 以及补偿光源,补偿光源包括青绿光激光器 112 以及红光激光器 113 。
其中色轮组件 102 包括荧光轮,荧光轮上的分段区域的分布如上述图 3 所示,荧光轮包括设有黄光波长转换层的分段区域(也称为黄色荧光区域) 1024 和设有散射层 的分段区域(也称为蓝光散射区域) 1025 。该色轮组件 102 在激发光源 1111 的激励下出射时序的蓝光和黄光,其中蓝光散射区域 1021 具有散射粉,用于对入射的光线进行散射并出射,如将偏振态的蓝色激光转换为非偏振态的蓝光。黄色荧光区域 1022 具有黄色荧光粉,荧光粉的作用是将短波长的光转换为长波长的光。因此激发光源发出的蓝色激光激发黄色荧光粉得到黄色荧光。色轮组件 102 还具有驱动装置,如马达等,用于驱动荧光轮旋转。具有双片 DMD 的分光装置,用于将色轮组件 102 出射的蓝光和黄光进行分光形成 RGB 三基色光,并对 RGB 三基色光进行分配调制,以形成彩色图像。
在本实施中,可以以 DCI 标准色域为补偿标准。此时,补偿光源用于减少出射光的色域与 DCI 标准色域的差值,补偿光源包括青绿光激光器和 / 或红光激光器。
本实施例中,所述补偿光源的青绿激光 112 由青绿光激光器发生,所述补偿光源的红激光 113 由红光激光器发生,所述激发光源 1111 为蓝光激光器。所述蓝光激光器出射的蓝色激光主波长为 445nm ,所述青绿光激光器出射的青绿激光的主波长范围为 510nm-530nm 之间的任意值,包括端点值,所述红光激光器出射的红激光的主波长范围为 625nm-645nm 之间的任意值,包括端点值。优选的,所述青绿激光的主波长为 520nm ,所述红激光的主波长为 638nm 。
所述补偿光源的青绿激光 112 在所述色轮组件 102 的整个时序段打开,即所述青绿光激光器在所述色轮组件 102 出射黄光与蓝光时均打开;所述补偿光源的红激光 113 时序与所述色轮组件 102 出射的黄光时序相同,即所述红光激光器仅在所述色轮组件 102 出射黄光时打开。
本实施例中,补偿光源包括青绿光激光器和 / 或红光激光器,激发光源出射的蓝激光主波长优选为 445nm ,青绿光激光器出射的青绿激光的主波长优选为 520nm ,红光激光器出射的红激光的主波长优选为 638nm 。在黄色时序段和蓝色时序段,青绿光激光器和激发光源 1111 打开,用于对分光装置的 RGB 三基色光中的蓝光和绿光进行色域补偿。在黄色时序段,红光激光器打开,用于对 RGB 三基色光中的红光进行色域补偿。通过设定所述红光激光器以及青绿光激光器的色域,可以使得补偿后的红光、绿光以及蓝光色域位于设定的范围。
本实施例中,可以使得补偿后的系统色域与目标标准色域的差值在设定的阈值范围。以标准 DCI 色域为所述目标标准色域,所述目标标准色域的三色光色坐标分别是:绿光( 0.265 , 0.69 ),红光( 0.68 , 0.32 ),蓝光( 0.15 , 0.06 )。可以使得补偿后的绿光 DCI 色坐标为( 0.265 ± 0.02 , 0.69 ± 0.02 ),补偿后的红光 DCI 色坐标为( 0.68 ± 0.02 , 0.32 ± 0.02 ),补偿后的蓝光 DCI 色坐标为( 0.15 ± 0.01 , 0.06 ± 0.01 )。由发光装置 100 发出的光经过收集透镜 101 汇聚之后入射到色轮组件 102 上,经过色轮组件 102 出射时序的黄光和蓝光,色轮组件 102 出射的光进入方棒 103 进行匀光,之后依次经过光中继系统 104 和 TIR 棱镜 105 进入分光合光棱镜 106 中,分光合光棱镜 106 对其进行分光形成 RGB 三基色光,并将 RGB 三基色光分配到不同的 DMD 芯片上进行调制,合光后通过投影镜头形成彩色图像。
进一步,发光装置 100 还包括 PWM 控制器(脉冲宽度调制控制器), PWM 控制器用于控制青绿光激光器和 / 或红光激光器的出射光的发光强度。 PWM 控制器利用脉冲宽度调制控制方法来对青绿光激光器和 / 或红光激光器的出射光的发光强度进行时序的调节,由于在补偿蓝光和绿光时,所需青绿激光的强度可能不同,因此需要根据现有的绿光和红光色坐标以及 DCI 标准色坐标计算所需要的青绿激光和红激光的强度,所以,需要对青绿激光和红激光的强度进行时序调节,同时也需要对色轮组件 102 的分段进行调节。
具有双片 DMD 芯片的分光装置 300 包括分光合光棱镜 106 、 TIR 棱镜 105 、第一 DMD 芯片 108a 、第二 DMD 芯片 108b 以及投影镜头 109 , TIR 棱镜 105 用于将色轮组件 102 出射的黄光和蓝光反射至分光合光棱镜 106 上,分光合光棱镜 106 用于对色轮组件 102 出射的黄光和蓝光进行分光形成 RGB 三基色光,且将其分配到第一 DMD 芯片 108a 和第二 DMD 芯片 108b 上进行调制,对调制后的所述 RGB 三基色光进行合光并反射至所述投影镜头 109 ,分光合光棱镜 106 具体包括:第一棱镜 107a 和第二棱镜 107b ,且第一棱镜 107a 和第二棱镜 107b 之间具有分光膜 110 。
其中,分光合光棱镜 106 中第一棱镜 107a 和第二棱镜 107b 之间的分光膜 110 进行分光,当分光膜 110 为低通分光膜时,分配至第一 DMD 芯片 108a 上的光为所述 RGB 三基色光中的蓝光和绿光,分配至第二 DMD 芯片 108b 上的光为 RGB 三基色光中的红光。
由于色轮组件 102 出射的蓝光与黄光为不同时序,故蓝光可以采用红光或是绿光的光路进行调制。因此,在所述色轮组件 102 出射蓝光的时序段,可以通过所述第一光路对所述蓝光与所述青绿激光进行调制。或在所述色轮组件出射蓝光的时序段,通过所述第二光路对所述蓝光与所述青绿激光进行调制。
当在所述色轮组件 102 出射蓝光的时序段,通过所述第一光路对所述蓝光与所述青绿激光进行调制时,第一 DMD 芯片 108a 时序图和第二 DMD 芯片 108b 的时序图如图 9 所示。由于低通分光膜的作用是透射短波长的光反射长波长的光,由色轮组件 102 出射的不同时序的黄光和蓝光 B 入射到低通分光膜时,低通分光膜透射蓝光和黄光中的绿光 G 以及青绿激光 C 到第一 DMD 芯片 108a 上,将黄光中的红光 R 以及红色激光 R' 反射到第二 DMD 芯片 108b 上,青绿激光 C 与蓝光 B 混合,能够改变原来蓝光色坐标,将其拉近到蓝光 DCI 标准色坐标( 0.15 , 0.06 )附近;由于绿光是从黄光中分出得到,绿光的长波长部分被滤除,不同的投影系统,其在滤除绿光长波长的过程中具有差异,这种差异会使得绿光色坐标沿着绿光色域边沿具有近似直线的移动,青绿激光 C 和绿光 G 混合,能够改变原来绿光色坐标,将其沿着上述直线拉近到绿光 DCI 标准色坐标( 0.265 , 0.69 )附近;同理,由于红光 R 是从光中分出得到,红光的短波长部分被滤除,不同的投影系统,其在滤除红光短波长的过程中具有差异,这种差异会使得红光色坐标沿着红光色域边沿具有近似直线的移动,红光 R 和红色激光 R' 混合,能够改变原来红光色坐标,将其沿着上述直线拉近到红光 DCI 标准色坐标( 0.68 , 0.32 )附近,其色域图如图 10 所示。
需要指出的是,在本实施例中,可以将此方法应用于双片式 LCOS ( Liquid Crystal On Silicon ,硅基液晶显示器)投影系统,将蓝光按偏振态分配到两个 LCOS 上,能够使得两个 LCOS 上的能量更加均衡,有利于散热。
在其他实施方式中,还可以设置在所述色轮组件 102 出射蓝光的时序段,所述第一光路用于分配所述蓝光,所述第二光路用于分配所述青绿激光,通过所述第一光路与所述第二光路,同时对所述蓝光与所述青绿激光进行调制;或在所述色轮组件 102 出射蓝光的时序段,所述第二光路用于分配所述蓝光,所述第一光路用于分配所述青绿激光,通过所述第一光路与所述第二光路,同时对所述蓝光与所述青绿激光进行调制。
当分光膜 110 为带通分光膜时,第一 DMD 时序图和第二 DMD 时序图如图 11 所示,分配至第一 DMD 芯片 108a 上的光为 RGB 三基色光中的蓝光 B 和红光 R ,分配至第二 DMD 芯片 108b 上的光为 RGB 三基色光中的绿光 G 。在本实施例中,带通分光膜的作用是透射所需要的光,反射不需要的光,由色轮组件 102 出射的黄光和蓝光 B 入射到带通分光膜时,透射蓝光 B 和黄光分出的红光 R 以及红色激光 R' 至第一 DMD 芯片 108a 上,反射青绿激光 C 和黄光分出的绿光 G 至第二 DMD 芯片 108b 上,补充蓝光的青绿激光 C 与蓝光 B 分配到了不同的 DMD 芯片上。
因为青绿激光 C 与蓝光 B 能量较大,将二者分配到不同的 DMD 芯片上有利于每个 DMD 芯片的散热,每个 DMD 芯片处理光的时序是按照单片式 DMD 的方式进行的,因此,如图 12 所示,需要将第一 DMD 芯片 108a 的蓝光信号输入端与第二 DMD 芯片 108b 的蓝光信号输入端连接在一起,同时利用 PWM 控制器对青绿激光的强度进行调制,能够实现蓝光色坐标的补偿,红光和红色激光混合能够改变原来红光色坐标,补偿到红色 DCI 标准色坐标的附近,青绿激光与绿光混合能够改变原来绿光色坐标,补偿到绿色 DCI 标准色坐标的附近,减小了三基色光的色域与 DCI 标准色域的差值。
上述投影系统以两个分光光路为例进行说明,在其他实施方式中,还可以设置所述分光装置包括第三光路。在所述色轮组件出射蓝光的时序段时,所述第三光路用于对所述蓝光与所述青绿激光进行调制。所述第三光路具有第三 DMD 芯片。
实施例五
图 13 为一种三片式 DMD 投影系统的结构示意图。该投影系统包括发光装置 100 和分光装置 400 。该分光装置 400 与上述实施例四中的分光装置 300 不同,详细说明如下:该分光装置 400 包括具有第一 DMD 芯片 110a 的第一光路,具有第二 DMD 芯片 110b 的第二光路以及具有第三 DMD 芯片 110c 的第三光路。
发光装置 100 包括光源模组 101 和色轮组件 102 。其中光源模组 101 包括激发光源及补偿光源。其中补偿光源包括青绿激光和 / 或红激光。光源模组 101 在整个时序段打开,即该光源模组 101 包括的激发光源、青绿激光以及红激光在整个投影时序中均是持续打开的。
激发光源包括第一蓝光激光器 111 。补偿光源的青绿激光由青绿光激光器 112 发生,补偿光源的红激光由红光激光器 113 发生。
色轮组件 102 在整个时序段受激发光源的激励出射白光 W 。所述色轮组件 102 包括全黄色轮 123 。所述全黄色轮 123 受所述第一蓝光激光器 111 激励出射黄光以及透射部分所述第一蓝光激光器的蓝光,出射的黄光与透射的蓝光形成白光 W 出射。
所述分光装置 400 将所述白光 W 中的蓝光分配至第一光路进行调制,此时,由于分配至第一光路的蓝光为全黄色轮 123 投射的部分蓝激光,为激发黄色荧光粉后的余光,色域范围不确定,此时,可以将部分黄光中的青光分配至所述第一光路与所述蓝光同时进行调制,通过所述第一 DMD 芯片 110a 对将所述蓝光与所述青光同时进行调制,以所述青光对所述蓝光进行补偿,调整蓝光的色域范围。
所述分光装置 400 将所述白光 W 中的红光以及所述红色激光分配至第二光路进行调制,通过所述第二 DMD 芯片 110b 对同时对所述红光以及红色激光进行调制,通过所述红色激光对所述红光进行补偿,调整所述红光的色域范围。
所述分光装置 400 将所述白光 W 中的绿光与所述青绿色激光分配至第三光路进行调制,通过所述第三 DMD 芯片 110c 对所述绿光以及青绿色激光同时进行调制,通过所述青绿色激光对所述绿光进行补偿,调整所述绿光的色域范围。
通过上述描述可知,所述投影系统,通过所述分光装置,可以通过所述补偿光源对分光后的三基色光的对应分光进行补偿,以调整投影系统的色域范围。
本实施例中,补偿光源包括青绿光激光器 112 和 / 或红光激光器 113 ,青绿光激光器 112 用于对绿光进行色域补偿,红光激光器 113 用于对红光进行色域补偿。优选的,第一蓝光激光器 111 出射的蓝色激光波长为 445nm ,青绿光激光器 112 出射的青绿色激光的波长范围为 510nm-530nm ,包括端点值,红光激光器 113 出射的红色激光的波长范围为 625nm-645nm ,包括端点值。
可以使得补偿后的系统色域与目标标准色域的差值在设定的阈值范围。以标准 DCI 色域为所述目标标准色域,所述目标标准色域的三色光色坐标分别是:绿光( 0.265 , 0.69 ),红光( 0.68 , 0.32 ),蓝光( 0.15 , 0.06 )。本实施例中,可以将 DCI 标准色域作为色域调整的标准,使得红光、绿光以及蓝光进行补偿后与 DCI 标准色域中的对应颜色光的色域相同或是相近。本方案补偿后的绿光 DCI 色坐标为( 0.265 ± 0.02 , 0.69 ± 0.02 ),补偿后的红光 DCI 色坐标为( 0.68 ± 0.02 , 0.32 ± 0.02 ),补偿后的蓝光 DCI 色坐标为( 0.15 ± 0.01 , 0.06 ± 0.01 )。全黄色轮 123 如图 4 所示,包括沿该全黄色轮 123 的圆周方向均设置有黄光波长转换层,该黄光波长转换层包括黄色荧光粉,用于根据补偿光源与第一蓝光激光器 111 发射的光出射白光,荧光粉的作用是将短波长的光转换为长波长的光。
本实施例中,补偿光源包括青绿激光器 112 和 / 或红光激光器 113 ,第一蓝光激光器 111 出射的蓝色激光主波长优选为 445nm ,青绿光激光器 112 出射的青绿色激光主波长优选为 520nm ,红光激光器 113 出射的红色激光主波长优选为 638nm 。在整个时序段,第一蓝光激光器 111 、青绿光激光器 112 以及红光激光器 113 均打开,用于对 RGB 三基色光中对应颜色的光的色域进行补偿。
由光源模组 101 发出的光经过第一收集透镜 104 汇聚之后入射到全黄色轮 123 上,第一蓝光激光器 111 和青绿光激光器 112 激发全黄色轮 123 上的黄色荧光粉出射黄光,透过全黄色轮 123 的部分蓝激光和黄光形成白光由全黄色轮 123 出射,全黄色轮 123 出射的白光进入方棒 106 进行匀光后,出射为白光 W 。经过光中继系统 107 入射到 TIR 棱镜 108 和分光合光棱镜 109 中,分光合光棱镜 109 对其进行分光形成 RGB 三基色光,并将 RGB 三基色光分配到三个不同的 DMD 芯片上进行调制,合光后通过投影镜头 120 形成彩色图像。
如图 14 所示,在上述实施例提供的投影系统的基础上,所述激发光源进一步包括第二蓝光激光器 114 ,色轮组件 102 还包括全蓝色轮 124 。该投影系统还包括反射镜 204 以及二向色镜 205 。全蓝色轮 124 对第二蓝光激光器 114 出射的蓝光散射消相干。二向色镜 205 用于过滤全黄色轮 123 出射白光中的蓝光,使得全黄色轮 123 出射的黄光与全蓝色轮 124 出射的标准蓝光形成白光出射。此时,由于出射白光 W 中蓝光为全蓝色轮 124 出射的标准蓝光,在后续分光中无需进行补偿,因此,分光装置 400 仅将全蓝色轮 124 出射的标准蓝光分配至第一光路进行调制,无需青光补偿。
第二蓝光激光器 114 发出蓝色激光的主波长优选为 462nm ,全蓝色轮 124 如图 15 所示,该全蓝色轮 124 沿其圆周方向均设置有散射层 ,该散射层 包括散射粉,用于对入射的光线进行散射并出射,如散射粉的作用是将偏振态的蓝光转换为非偏振态的蓝光,因此,第二蓝光激光器 114 经过全蓝色轮 124 后出射蓝光。反射镜 204 用于将全蓝色轮 203 出射的蓝光反射至二向色镜 205 上,二向色镜 205 用于透射全黄色轮 123 出射的白光中的绿光和红光,且反射全蓝色轮 124 出射的蓝光,形成白光 W ,使得投射的绿光和红光以及反射的蓝光入射分光装置 400 。
本实施例中,在整个时序阶段,发光装置 100 中的第一蓝光激光器 111 、青绿光激光器 112 以及红光激光器 113 均打开,同一时刻,第二蓝光激光器 114 打开,用于对分光后的蓝光、绿光以及红光进行色域补偿。发光装置 100 发出的光经过第一收集透镜 104 汇聚之后入射到全黄色轮 123 上,经过全黄色轮 123 后出射的白光入射到二向色镜 205 表面,第二蓝光激光器 114 发出的光经过第二收集透镜 202 汇聚之后入射到全蓝色轮 124 上,经过全蓝色轮 124 后出射的蓝光入射到反射镜 204 表面,反射镜 204 将蓝光反射至二向色镜 205 表面,蓝光与二向色镜 205 透射的绿光和红光混合形成白光,白光进入方棒 106 进行匀光,之后依次经过中继系统 107 和 TIR 棱镜 108 进入分光合光棱镜 109 中,分光合光棱镜 109 对其进行分光形成 RGB 三基色光,并将 RGB 三基色光分配到三个不同的 DMD 芯片上进行调制,合光后通过投影镜头 120 形成彩色图像。
分光装置 400 包括: TIR 棱镜 108 、分光合光棱镜 109 、第一 DMD 芯片 110a 、第二 DMD 芯片 110b 、第三 DMD 芯片 110c 以及投影镜头 120 ;其中, TIR 棱镜 108 用于将全黄色轮 123 出射的白光或二向色镜出射的白光反射至分光合光棱镜 109 上,分光合光棱镜 109 用于对白光进行分光形成 RGB 三基色光,且将其分配到第一 DMD 芯片 110a 、第二 DMD 芯片 110b 以及第三 DMD 芯片 110c 上进行调制,对调制后的 RGB 三基色光进行合光并反射至投影镜头 120 。其中,分光合光棱镜 109 具体包括:第一棱镜、第二棱镜以及第三棱镜,第一棱镜和第二棱镜之间具有第一分光膜,第二棱镜和第三棱镜之间具有第二分光膜,第一分光膜用于分配 RGB 三基色光中的蓝光至第一 DMD 芯片 110a 上,第二分光膜用于分别将 RGB 三基色光中的红光和绿光分配至第二 DMD 芯片 110b 和第三 DMD 芯片 110c 上。
在图 13 所示的实施方式中,在整个时序段,第一蓝光激光器 111 、青绿光激光器 112 以及红光激光器 113 均打开,由全黄色轮 123 出射的白光经过方棒匀光后,经过光中继系统 107 入射到 TIR 棱镜 108 上,经过 TIR 棱镜 108 的反射到达分光合光棱镜 109 的第一分光膜的表面,第一分光膜反射蓝光和部分黄光中的青光到达第一 DMD 芯片 110a 上进行调制,透射黄光到第二分光膜表面,在第二分光膜表面反射黄光中的红光与红色激光到达第二 DMD 芯片 110b ,并且透射青绿色激光和黄光中的绿光到达第三 DMD 芯片 110c 上进行调制,经过 DMD 调制后的光在第一分光膜和第二分光膜处合光出射,到达投影镜头 120 ,最终成彩色图像。其中,蓝光和黄光中的青光混合,能够改变原来的蓝光色坐标,由于青光是从黄光中截取得到,滤除了青光的长波长部分,而且不同投影系统第一分光膜的镀膜差异性或者分光合光棱镜 109 的装配差异性导致通过第一分光膜的青光波长范围存在差异,所以蓝光和具有差异性的青光混合后得到的蓝光色坐标为一个小的色域范围,这个色域范围是在 DCI 标准蓝光色坐标( 0.15 , 0.06 )的附近;青绿色激光和黄光中的绿光混合,能够改变原来绿光色坐标,由于绿光是从黄光中截取得到,其短波长和长波长的部分均被滤除,而且第二分光膜的镀膜具有差异性,使得补偿后的绿光色坐标为一个小的色域范围( 0.265 ± 0.02 , 0.69 ± 0.02 ),这个色域范围是在 DCI 标准绿光色坐标( 0.265 , 0.69 )的附近;红光和红色激光混合,能够沿直线将红光色坐标拉到( 0.68 ± 0.02 , 0.32 ± 0.02 ),接近 DCI 标准红光色坐标( 0.68 , 0.32 ),其色域如图 16 所示。
本实施例通过添加补偿光源来补偿色域范围,黄色荧光中的青光用于补偿蓝光色坐标, 520nm 青绿色激光用于补偿绿光色坐标, 638nm 红色激光用于补偿红光色坐标。在蓝光色坐标的补偿过程中,由于未转化为黄光的蓝光与黄光比例一定,因此需要根据蓝光与截取黄光中青光的比例来计算所需青光的波长范围;对于红光色坐标的补偿, 638nm 红激光可以很好的将红光色坐标补偿到( 0.68 ± 0.02 , 0.32 ± 0.02 ),非常接近 DCI 标准红光色坐标( 0.68 , 0.32 )。
在图 14 所示的实施方式中,在整个时序阶段,发光装置 100 中的第一蓝光激光器 111 、青绿光激光器 112 以及红光激光器 113 均打开,同一时刻,第二蓝光激光器 114 打开,用于对 RGB 三基色光中的蓝光、绿光以及红光进行色域补偿。从二向色镜 205 出射的白光进入方棒 106 进行匀光,之后依次经过光中继系统 107 和 TIR 棱镜 108 进入分光合光棱镜 109 中, TIR 棱镜 108 将白光反射至分光合光棱镜 109 中的第一分光膜的表面,第一分光膜反射蓝光到第一 DMD 芯片 110a 上进行调制,透射黄光至第二分光膜的表面,第二分光膜反射红色激光和黄光中分出的红光到达第二 DMD 芯片 110b 中进行调制,透射黄光中的绿光到达第三 DMD 芯片 110c 中进行调制,经过 DMD 调制后的光在第一分光膜和第二分光膜处合光出射,到达投影镜头 120 ,最终成彩色图像。其中, 462nm 蓝光作为投影系统中的蓝光其色坐标为( 0.15 ± 0.01, 0.06 ± 0.01 )在 DCI 标准蓝光色坐标( 0.15 , 0.06 )附近,因此蓝光不用补偿; 520nm 青绿色激光与黄光中分出的绿光混合,由于绿光在滤除其长波长的过程中的差异导致了绿光色坐标为沿着绿光色域边沿的一段直线,经 520nm 青绿色激光补偿后色坐标为( 0.265 ± 0.02 , 0.69 ± 0.02 ),接近 DCI 绿光色坐标( 0.265 , 0.69 ), 638nm 红色光激光与黄光中分出的红光混合,红光在其短波长被滤除的过程中的差异使得红光色坐标为沿着红光色域边沿的一段直线,经 638nm 红色激光补偿后色坐标为( 0.68 ± 0.02 , 0.32 ± 0.02 )接近 DCI 标准红光色坐标( 0.68 , 0.32 ),因此,蓝光、绿光和红光色坐标都能得到很好的补偿,其色域如图 17 所示。
图 14 中,采用了第一蓝光激光器 111 和第二蓝光激光器 114 两组激发光源,第二蓝光激光器 114 中的 462nm 蓝光激光作为投影系统的蓝光色坐标能够满足色域标准,发光装置 100 中的 445nm 蓝光激光用于激发黄色荧光粉产生黄光分出绿光和红光, 520nm 青绿光激光用于补偿绿光, 638nm 红光激光用于补偿红光,均能将其补偿到一个 DCI 标准色域附近。
通过上述描述可知,本申请实施例所述投影系统通过所述补偿光源可以对色域范围进行调整,使得投影系统的色域范围可设定。如上述描述,可以以标准 DCI 色域为补偿标准,使得所述投影系统的色域范围与所述标准 DCI 色域相同或是相近。
以上所述仅为本实用新型的优选实施例,并非因此限制本实用新型的专利范围,凡是利用本实用新型说明书及附图内容所作的等效结构或者直接、间接运用在其他相关的技术领域,均视为包括在本实用新型的专利保护范围内。

Claims (30)

1 、一种发光装置,其特征在于,包括:
光源模组,包括出射激发光的激发光源和出射补偿光的补偿光源;
色轮组件,包括沿所述色轮组件的运动方向分布的至少一分段区域,且所述色轮组件在所述激发光源和所述补偿光源的照射下出射所述补偿光和包括至少一受激光的第一光;
其中所述补偿光与所述第一光中的至少一受激光存在光谱重叠,所述补偿光在与所述补偿光存在光谱重叠的受激光出射的时段内出射,所述补偿光和与所述补偿光存在光谱重叠的受激光同时出射,且所述补偿光和与所述补偿光存在光谱重叠的受激光可相互独立调节。
2 、如权利要求 1 所述的发光装置,其特征在于,所述补偿光源出射的所述补偿光的时序与所述色轮组件在所述激发光源的照射下出射的与所述补偿光存在光谱重叠的受激光的时序相同。
3 、如权利要求 2 所述的发光装置,其特征在于,所述至少一分段区域中的至少一分段区域设有波长转换层,所述波长转换层吸收所述激发光可出射受激光。
4 、如权利要求 3 所述的发光装置,其特征在于,所述补偿光源在所述激发光源照射到所述色轮组件的设有吸收所述激发光可出射与所述补偿光存在光谱重叠的受激光的波长转换层的分段区域时开启,在所述激发光源照射到剩余分段区域时关闭。
5 、如权利要求 3 所述的发光装置,其特征在于,所述至少一分段区域中的未设有波长转换层的至少一个分段区域设有散射层 ,所述散射层 对所述激发光源出射的激发光进行散射并出射。
6 、如权利要求 5 所述的发光装置,其特征在于,所述补偿光源在所述激发光源照射到所述色轮组件的设有吸收所述激发光可出射受激光的波长转换层的分段区域以及设有散射层 的分段区域时开启,在所述激发光源照射到剩余分段区域时关闭。
7 、如权利要求 6 所述的发光装置,其特征在于,所述激发光源在所述色轮组件的所有分段区域均开启,或者,
所述光源模组还包括出射第三光的第三光源,所述第三光与所述激发光为同色异谱的光,所述激发光源在所述色轮组件的设有波长转换层的分段区域开启,在其余分段区域关闭,所述第三光源在所述色轮组件的设有散射层 的分段区域开启,在其余分段区域关闭。
8 、如权利要求 1 至 7 任一项所述的发光装置,其特征在于,所述补偿光源包括出射红光的红激光光源和 / 或出射青绿光的青绿激光光源,所述激发光源为出射蓝光的蓝激光光源。
9 、如权利要求 8 所述的发光装置,其特征在于,所述激发光源出射的蓝光的主波长为 445nm ,所述青绿激光光源出射的青绿光的主波长为 510nm-530nm 之间的任意值,包括端点值,所述红激光光源出射的红光的主波长为 625nm-645nm 之间的任意值,包括端点值。
10 、如权利要求 9 所述的发光装置,其特征在于,所述青绿激光光源出射的青绿光的主波长为 520nm ,所述红激光光源出射的红光的主波长为 638nm 。
11 、如权利要求 8 所述的发光装置,其特征在于,所述发光装置还包括:
控制装置,通过控制所述补偿光源的输出功率和所述激发光源的输出功率来控制所述补偿光和与所述补偿光存在光谱重叠的受激光的比例。
12 、如权利要求 11 所述的发光装置,其特征在于,所述控制装置还包括:
亮度控制单元,用于等比例的提高或者降低所述补偿光和与所述补偿光存在光谱重叠的受激光的亮度。
13 、如权利要求 11 所述的发光装置,其特征在于,所述控制装置还包括:
PWM 控制器,所述 PWM 控制器用于控制所述青绿激光光源和 / 或红激光光源出射的激光的发光强度。
14 、如权利要求 1 所述的发光装置,其特征在于,所述色轮组件在所述激发光源的照射下出射时序的红光、绿光和蓝光;
所述补偿光源包括青绿激光和 / 或红激光,所述补偿光源的青绿激光的时序与所述色轮组件出射的蓝光以及绿光的时序相同,所述补偿光源的红激光的时序与所述色轮组件出射的红光时序相同。
15 、如权利要求 14 所述的发光装置,其特征在于,所述色轮组件包括荧光轮以及与所述荧光轮同步旋转的滤光轮,其中:
所述荧光轮包括绿色荧光区域、蓝色散射区域以及红色荧光区域;
所述滤光轮包括与所述绿色荧光区域对应设置的绿色滤光区域,与所述红色荧光区域对应设置的红色滤光区域。
16 、如权利要求 15 所述的发光装置,其特征在于,所述绿色荧光区域表面设置有绿色荧光粉,所述蓝色散射区域表面设置有散射粉,所述红色荧光区域表面设置有红色荧光粉。
17 、如权利要求 15 所述的发光装置,其特征在于,
所述绿色滤光区域用于滤除所述绿色荧光区域出射的光中的部分短波长和部分长波长的光,所述短波长的范围为 460nm-490nm ,包括端点值,所述长波长的范围为 590nm-600nm ,包括端点值;
所述红色滤光区域用于滤除所述红色荧光区域出射的光中的部分长波长的光,所述长波长的范围为 590nm-600nm ,包括端点值。
18 、如权利要求 1 所述的发光装置,其特征在于,
所述色轮组件在所述激发光源的激励下出射时序的蓝光和黄光;
所述补偿光源包括青绿激光和 / 或红激光;所述补偿光源的青绿激光在所述色轮组件的整个时序段均打开,所述补偿光源的红激光时序与所述色轮组件出射的黄光时序相同。
19 、如权利要求 1 所述的发光装置,其特征在于,所述色轮组件在整个时序段受激发光源的激励出射白光;
所述补偿光源包括青绿激光和 / 或红激光,所述光源模组包括的激发光源和补偿光源均在整个时序段均打开。
20 、如权利要求 19 所述的发光装置,其特征在于,所述激发光源包括第一蓝光激光器,所述色轮组件包括全黄色轮,所述全黄色轮受所述第一蓝光激光器激励出射黄光以及透射部分所述第一蓝光激光器的蓝光,出射的黄光与透射的蓝光形成白光出射。
21 、如权利要求 20 所述的发光装置,其特征在于,所述激发光源还包括第二蓝光激光器,所述色轮组件还包括全蓝色轮以及二向色镜,
所述全蓝色轮对所述第二蓝光激光器出射的蓝光散射消相干;
所述二向色镜用于过滤所述全黄色轮出射白光中的蓝光,使得所述全黄色轮出射的黄光与所述全蓝色轮出射的标准蓝光形成白光出射。
22 、如权利要求 21 所述的发光装置,其特征在于,所述第二蓝光激光器出射的蓝激光的主波长为 462nm 。
23 、一种投影系统,其特征在于,包括权利要求 1 至 22 任一项所述的发光装置。
24 、如权利要求 23 所述的投影系统,其特征在于,所述投影系统还包括成像组件,其中:
所述成像组件包括 TIR 棱镜、 DMD 芯片以及投影镜头,所述 TIR 棱镜用于将所述色轮组件出射的光导入所述 DMD 芯片上,并将所述 DMD 芯片出射的成像光导入所述投影镜头中。
25 、如权利要求 23 所述的投影系统,其特征在于,当所述色轮组件在所述激发光源的激励下出射时序的蓝光和黄光时,所述投影系统还包括分光装置,所述分光装置包括:
第一光路与第二光路,在所述色轮组件的黄光时序时,所述分光装置用于将所述黄光分为绿光与红光;其中,分光后的绿光与所述补偿光源的青绿激光通过第一光路进行调制,分光后的红光与所述补偿光源的红激光通过第二光路进行调制。
26 、如权利要求 25 所述的投影系统,其特征在于,在所述色轮组件出射蓝光的时序段,通过所述第一光路或者所述第二光路对所述蓝光与所述青绿激光进行调制。
27 、如权利要求 25 所述的投影系统,其特征在于,在所述色轮组件出射蓝光的时序段,所述第一光路用于分配所述蓝光,所述第二光路用于分配所述青绿激光,通过所述第一光路与所述第二光路,同时对所述蓝光与所述青绿激光进行调制。
28 、如权利要求 25 所述的投影系统,其特征在于,所述分光装置还包括:第三光路,在所述色轮组件出射蓝光的时序段时,所述第三光路用于对所述蓝光与所述青绿激光进行调制。
29 、如权利要求 23 所述的投影系统,其特征在于,当所述色轮组件在整个时序段内受激发光源的激励出射白光时,所述投影系统还包括分光装置,所述分光装置将所述白光中的蓝光分配至第一光路进行调制,将所述白光中的红光以及所述红激光分配至第二光路进行调制,将所述白光中的绿光与所述青绿激光分配至第三光路进行调制。
30 、如权利要求 29 所述的投影系统,其特征在于,所述分光装置将所述白光中的蓝光分配至第一光路进行调制时,还将部分黄光中的青光分配至所述第一光路与所述蓝光同时进行调制。
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