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WO2018107634A1 - 光源系统及投影装置 - Google Patents

光源系统及投影装置 Download PDF

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Publication number
WO2018107634A1
WO2018107634A1 PCT/CN2017/081306 CN2017081306W WO2018107634A1 WO 2018107634 A1 WO2018107634 A1 WO 2018107634A1 CN 2017081306 W CN2017081306 W CN 2017081306W WO 2018107634 A1 WO2018107634 A1 WO 2018107634A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
color
region
wavelength conversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/081306
Other languages
English (en)
French (fr)
Inventor
胡飞
周宇轩
李屹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Appotronics Corp Ltd
Original Assignee
Appotronics Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Priority to EP17880855.6A priority Critical patent/EP3557322B1/en
Priority to US16/469,428 priority patent/US11215909B2/en
Publication of WO2018107634A1 publication Critical patent/WO2018107634A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
    • G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2013—Plural light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection

Definitions

  • the present invention relates to the field of light source technologies, and in particular, to a light source system and a projection apparatus applying the same.
  • the wavelength conversion device generally adopts a segmented color wheel, and at least includes three colors of R, G, and B.
  • the projection system generally requires the white field color of the white light source, so the proportion of the R, G, and B colors in the segmented color wheel will be relatively fixed.
  • red fluorescent light Since the red fluorescent light has a relatively low luminous efficiency in the laser fluorescent white light source system, in order to increase the red light brightness, a red light supplemental light source is usually added in addition to the main light source that emits RGB three-color light in the light source system. However, in the current light source system, if a supplementary light source is used, it is used in the corresponding color segment.
  • the main light source is the RGB time series light obtained by the blue light excitation fluorescent color wheel
  • the supplementary light source is the red light laser light source
  • the supplementary light source is turned on when the color wheel turns to the red segment, so that the red fluorescent light and the red laser light are superimposed.
  • the supplemental light source is turned on only when the red segment of the fluorescent color wheel is illuminated by the excitation light, resulting in a large amount of time for the supplemental light source to be idle, and the utilization rate is low, and the cost is increased without the brightness of the light source system.
  • the promotion provides the due contribution.
  • the main object of the present invention is to provide a light source system aimed at obtaining a light source system having high luminous flux and high utilization of supplemental light sources.
  • the present invention provides a light source system comprising: a first light source that emits a first laser light; and a wavelength conversion device located on an optical path of the first laser light for receiving the first laser light and emitting the second light
  • the wavelength conversion device includes at least three primary color light regions and a mixed color light region, and a driving device that drives the wavelength conversion device to move, so that each region of the wavelength conversion device periodically receives the first laser light in time series.
  • the three primary color light regions receive the first laser light to emit three primary color lights, wherein each primary color light region emits a primary color light, and the mixed color light region receives the first laser light to emit mixed color light; a second light source that emits complementary light that is consistent with a color of one of the three primary colors of light; a control device that controls a switch of the second light source to receive the first laser in a same color primary light region All of the time periods, the mixed color light region receiving all of the first laser light period and a different color primary color light region receiving the partial time period of the first laser light In at least two of the two, the control device controls the second light source to be turned on, wherein the same color primary color region is a primary color light region in which the primary color light emitted from the three primary color light regions is the same as the complementary light color.
  • the different color primary color region is a primary color light region in which the primary color light emitted from the three primary color light regions is different from the complementary light color.
  • control device controls the second light source to be turned on at least in the same color primary light region receiving all of the first laser light and the mixed color light region receiving all the time periods of the first laser light;
  • the mixed color light at least partially overlaps the spectrum of the supplemental light.
  • a color correction sheet is further disposed on the optical path of the second light, and moves synchronously with the wavelength conversion device, the color correction sheet includes a plurality of color segments, the plurality of color segments One-to-one correspondence with the respective regions of the wavelength conversion device for receiving the second light and transmitting at least a portion of the second light.
  • a color segment of the color correction sheet on the optical path of the second light allows the supplemental light to pass.
  • the first light source is always on when the light source system is in an active state.
  • the first light source is a blue laser light source
  • the second light source is a red light source
  • the mixed color light region of the wavelength conversion device is a yellow light region
  • the primary color light region of the wavelength conversion device includes red light. region.
  • the control device controls the second light source to be in an on state.
  • the method further includes a light combining unit, located on an optical path between the first light source and the wavelength conversion device, receiving the first laser light and the supplementary light, and combining the two light beams to shoot the light A wavelength conversion device.
  • a light combining unit located on an optical path between the first light source and the wavelength conversion device, receiving the first laser light and the supplementary light, and combining the two light beams to shoot the light A wavelength conversion device.
  • the method further includes a light combining unit located on the outgoing light path of the wavelength conversion device, receiving the second light and the supplementary light, and combining the two and emitting the light.
  • a light combining unit located on the outgoing light path of the wavelength conversion device, receiving the second light and the supplementary light, and combining the two and emitting the light.
  • the present invention also provides a projection apparatus comprising a light source system, a light machine system and a display screen, the light machine system being located at a light exit of the light source system, receiving the emitted light and projecting to the display screen, wherein the light source system is Light source system.
  • a second light source is disposed in the light source system for emitting supplemental light, and the supplemental light can increase the luminous flux of a certain primary color light, so that the size of the region of the wavelength conversion device occupied by the primary color light can be appropriately reduced, and Increasing the size of the area of other primary colors, thereby improving the color of the light and improving the brightness of the light source system.
  • the partial period of the first laser is received by receiving all the time periods of the first laser, the mixed color light region receiving all the time periods of the first laser, and a different color primary color light region in the same color primary color light region. Opening the second light source in at least two of the three increases the utilization of the second light source and increases the total luminous flux of the outgoing light.
  • FIG. 1 is a schematic structural view of a first embodiment of a light source system according to the present invention.
  • FIG. 2 is a schematic diagram of an embodiment of a wavelength conversion device in the light source system shown in FIG. 1;
  • FIG. 3 is a schematic view of an embodiment of a color correction sheet in the light source system shown in FIG. 1;
  • FIG. 4 is a schematic view showing another embodiment of a wavelength conversion device in the light source system shown in FIG. 1;
  • FIG. 5 is a schematic view showing another embodiment of the color correction sheet in the light source system shown in Figure 1;
  • FIG. 6 is a schematic structural view of a second embodiment of a light source system according to the present invention.
  • FIG. 7 is a schematic structural view of a third embodiment of a light source system according to the present invention.
  • FIG. 8 is a schematic structural view of a fourth embodiment of a light source system according to the present invention.
  • Label name Label name 10 Light source system 15 Light unit 11 First light source 16 Light unit 12 Second light source 17 Uniform component 13 Wavelength conversion device 18 Control device 131 Sector area 19 Drive unit 14 Color correction film
  • the maximum brightness of the light source system is determined by the brightness of the white light it emits.
  • the three primary colors of light such as, but not limited to, red, blue, and green
  • the relative brightness of a primary color light is a ratio of the brightness of the primary color light to the percentage of the primary color light in the standard white light.
  • the white light brightness of the light source system depends on the lowest relative brightness. Base color light. At this time, we can obtain white light by increasing the brightness of the primary light or reducing the brightness of the other two primary colors.
  • the white light concept here is applicable to white light directly obtained after the mixing of the three primary colors, and also to the white light obtained by the three-primary color relying on the visual persistence effect of the human eye in time series.
  • the prior art combines a light source corresponding to a primary color light as a supplemental light source, and combines with a main light source that emits a sequence light of a fluorescent color wheel to enhance the luminous flux of the primary color light, thereby improving the overall brightness of the light source system. Too short, the light source has not been effectively applied, making the brightness of the light source system limited.
  • the inventive concept of the present invention is to open the supplementary light source without being limited to the light-emitting period of the primary light corresponding to the complementary light source, and turn on the supplementary light source for more time to obtain the maximum utilization degree of the supplementary light source, thereby greatly improving the light source system.
  • the process is equivalent to introducing another mixed color other than the three primary colors (the mixed color is composed of the complementary light and the light of the other color emitted by the main light source different from the complementary light color), and the mixed color is incorporated into the synthetic white light.
  • the proportion of each color in the standard white light is calculated, thereby adjusting the time ratio of the time light of the main light source (the light source that emits the time series light by the wavelength conversion device of the laser irradiation movement), and reducing the efficiency in the main light source.
  • an additional time period is turned on to turn on the supplemental light source, and the color coordinate of the white light emitted by the light source system is shifted toward the color direction of the complementary light.
  • the period of the final complementary light of the light must be longer than the period of the inverted light in the prior art, that is, the intensity of the inverted light of the light source system will increase, and the intensity of the white light of the light source system will also increase. Since the total output intensity of the light source system increases, the intensity and opening time of the excitation light source are unchanged, and the output intensity of the supplementary light source is constant, which necessarily means that the opening time of the supplementary light source increases, and the utilization rate of the supplementary light source is also improved.
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the present invention provides a light source system 10.
  • a light source system 10 includes a first light source 11 that emits a first laser beam, and a wavelength conversion device 13 that is located on an optical path of the first laser beam for receiving the first laser beam and emitting the second laser beam.
  • the light, wavelength conversion device 13 includes a plurality of regions (not labeled) including three primary color light regions and a mixed color light region, wherein the three primary color light regions receive the first laser light and emit three primary color lights, wherein Each of the primary color light regions emits a primary color light, and the mixed color light region receives the first laser light to emit the mixed color light; the driving device 19 drives the wavelength conversion device 13 to move, so that each region of the wavelength conversion device 13 periodically receives the first laser light according to the timing.
  • the second light source 12 emits supplemental light, which is a primary color light, and is consistent with the color of one of the three primary colors of light emitted from the wavelength conversion device 13, and the complementary light is incident on the first laser. It goes to the wavelength conversion device 13 and finally exits together with the second light emitted by the wavelength conversion device 13.
  • the light source system 10 also includes a control device 18 that controls the switches of the second light source 12. It is known that at least a plurality of regions of the wavelength conversion device 13 include: a primary color primary light region (the primary color primary region is a primary color light region in which the primary color light emitted from the three primary color light regions is the same as the complementary light color), the mixed color light region, and The different color base light region (the different color primary color region is a primary color light region that is different from the complementary light color in the three primary color light regions), and receives all the time periods of the first laser light in the same color primary color light region, and the mixed color light region receives
  • the control device 18 controls the second light source 12 to be turned on within at least two of the three periods of the first laser and the partial color period of the first laser.
  • the first light source 11 is a blue laser light source, and the first laser light emitted is a blue laser light.
  • the laser light source has the advantages of high energy density and narrow spectrum, and is suitable for the field of projection display with high brightness and high color display range.
  • the first light source 11 may also be a blue-violet light source or an ultraviolet laser source, or may be other non-laser solid-state light sources, such as LED light sources, especially high-intensity LED light sources.
  • the first light source 11 can be either a laser source or a laser diode source or a laser diode array source.
  • the wavelength conversion device 13 includes a transparent substrate whose surface is coated with a fluorescent material.
  • the transparent substrate may be an optical glass, a sapphire, a transparent ceramic or the like, and the surface-coated fluorescent material may include a phosphor, a quantum dot or the like; wherein the fluorescent material forms a fluorescent layer through the bonding material, and the bonding material may be Organic materials such as silica gel and epoxy resin may also be inorganic materials such as glass and ceramics.
  • the fluorescent material of the wavelength conversion device 13 is wrapped in a transparent substrate instead of being layered with the transparent substrate.
  • FIG. 2 is a schematic diagram of the wavelength conversion device 13 in the light source system shown in FIG. 1.
  • the wavelength conversion device 13 has a disk shape and includes four sector regions 131 of red, green, blue and yellow.
  • red (R), green (G), and blue (B) are usually used as the three primary colors (but not limited to) to express various colors; in order to increase the brightness, yellow is further added on the basis of the three primary colors, so that The brightness of white (that is, the brightest color that the display device can display) is further improved.
  • four regions of red, green, blue and yellow are used, corresponding to three primary colors of red, green and blue, and one mixed color of yellow.
  • the red light region, the green light region, and the yellow light region respectively include a red light fluorescent material, a green light fluorescent material, and a yellow light fluorescent material, and respectively receive the first laser blue light, and then convert the red light into red light. Excited light of green, yellow, and yellow light.
  • the blue light region of the wavelength conversion device 13 is a transmissive region for transmitting the first laser blue light directly as the displayed color light.
  • the transmission region contains a scattering material for changing the light distribution of the blue laser to prevent the blue laser from appearing on the screen.
  • the excitation light emitted by the wavelength conversion device 13 to receive the first laser light and the first laser light transmitted through the wavelength conversion device 13 belong to the second light.
  • the second light is an excited light and transmitted. Timing light of the first laser.
  • each region of the wavelength conversion device 13 has a sector shape.
  • the wavelength conversion device 13 is also in the shape of a disk, but the respective color regions thereon are fan-shaped and are collectively spliced into a circular ring shape.
  • the wavelength conversion device 13 is a color wheel that rotates about its axis under the driving of a driving device 19 such as a motor.
  • the wavelength conversion device 13 may also be a color bucket/color cylinder including a plurality of regions distributed around the barrel/cylinder surface, and the color drum/color cylinder is rotated about its axial direction to make the
  • the wavelength conversion device 13 may also be a color plate, including a plurality of regions arranged in a line direction, The linear direction is linearly vibrated such that the plurality of regions are periodically illuminated by the excitation light source in time series.
  • the second light source 12 is a red light source, and the red light emitted is used as supplemental light to improve the red display effect of the light source system 10.
  • Red light is selected as a supplementary light source, and the luminous efficiency of the red fluorescent material is relatively low, so that the red color is inferior to other colors.
  • light sources of other primary colors may also be selected as supplemental light for the second light source.
  • the second light source may be a laser light source or an LED light source.
  • the light source system includes a light combining unit 15 on the optical path between the first light source 11 and the wavelength conversion device 13, and the complementary light emitted by the second light source 12 and the first laser light emitted from the first light source 11 are incident.
  • the light is combined by the light combining unit 15 before the wavelength conversion device 13, and the combined light is incident on the wavelength conversion device 13. Since the supplemental light is red light, the light is not absorbed and converted by the respective regions of the wavelength conversion device 13, and does not generate an excitation effect, but passes through the wavelength conversion device 13 and is emitted together with the second light (if the complementary light is other colors) It is preferable that the light also does not cause an excitation effect in the wavelength conversion region.
  • the light combining unit 15 is a dichroic color plate (specifically, a wavelength filter) having a region for transmitting the first laser light and reflecting the complementary light.
  • the dichroic color patch can also transmit supplemental light and reflect the first laser light, as long as the positions of the first light source 11 and the second light source 12 are changed.
  • the light combining unit 15 in the present embodiment combines the first laser light and the complementary light wavelength, and in other embodiments, the light can be combined by using different polarization states of the two lights, and two light beams can also be used. Geometrically combined light is obtained by different spatial positions or different beam cross-sectional areas. In one embodiment of the present invention, the light combining unit 15 may be absent, and the supplemental light and the first laser light are incident on the wavelength conversion device 13 from different angles, respectively.
  • the control device 18 controls the switches of the second light source 12.
  • the control device 18 controls the second light source 12 to turn on, so that the complementary light
  • the red light is emitted together with the red light and the yellow light of the wavelength conversion device 13, respectively, to form the outgoing light of the light source system 10.
  • the yellow light emitted from the wavelength conversion device 13 and the red light emitted from the second light source 12 constitute orange light
  • the light source system 10 corresponds to the emission of red, green, blue and orange color sequential light.
  • the utilization rate of the second light source 12 is greatly improved with respect to the prior art, and the luminous flux of the light source system 10 is greatly increased.
  • each color in the time series light emitted by the light source system 10 needs to be in a certain proportion.
  • the emitted light is from red, green, blue and yellow.
  • the four colors become red, green, blue and orange, and the white light becomes reddish by the standard color coordinates; in order to make the white light re-standard white, it is necessary to reduce the amount of red and increase the amount of blue and green.
  • the wavelength conversion device 13 will be replaced with a wavelength conversion device as shown in FIG. 2.
  • the area relationship between the primary color light region (red green blue region) and the mixed color light region (yellow region) on the wavelength conversion device 13 can be as follows (this area relationship is only convenient for discussion, not actual area relationship): red light region and blue light
  • red light region and blue light The area of the area is equal, and the sum of the areas of the two is equal to the sum of the areas of the green light area and the yellow light area, and the area of the green light area is larger than the area of the yellow light area.
  • the second light source 12 is turned on when the first laser light is received in the red light region and the yellow light region, and is turned on when the first laser light is received in a partial region of the green light region.
  • the technical solution is equivalent to replacing the red, green, blue, and yellow colors of the main light source with the red, green, blue, and yellow colors of the light source system 10, wherein the orange color is synthesized by the yellow light of the main light source and the red light of the second light source.
  • the yellow color is synthesized by the green light of the main light source and the red light of the second light source.
  • the second light source cannot be turned on in all green areas for supplementation. This is because the luminous flux of monochromatic green light has the lowest requirement for the ratio of the emitted light, otherwise the light source system will not be able to express monochrome green.
  • the supplemental light source cannot be turned on in the primary light region of the non-complementary light color, otherwise the primary color light monochromatic will not be expressed.
  • the second light source 12 is turned on in addition to receiving the first laser irradiation in the red light region and the yellow light region, and receives the first laser irradiation in a partial region of the green light region and a partial region of the blue light region. Open when.
  • This technical solution can also increase the utilization of the second light source 12 and increase the luminous flux of the light source system 10.
  • the second light source 12 may also be turned on only when the yellow light region receives the first laser light irradiation and when the partial green light region receives the first laser light, or the second light source receives the first light in the yellow light region.
  • the laser light is turned on when the laser light is irradiated and a part of the blue light region is received by the first laser light, or the second light source 12 is turned on when the red light region receives the first laser light irradiation and when the partial green light region receives the first laser light.
  • the light source system 10 further includes a color correction sheet 14 that is located on the optical path of the second light emitted by the wavelength conversion device 13.
  • the color correction sheet 14 moves in synchronization with the wavelength conversion device 13, and the color correction sheet 14 includes a plurality of color segments that are in one-to-one correspondence with the plurality of regions of the wavelength conversion device 13 for receiving the first Two lights, and transmitting at least part of the second light.
  • the color correction sheet 14 can modify the spectral peak of the received second light so that the color coordinates of the emitted second light meet the light emission requirement; at the same time, the color correction sheet 14 can also receive the second light and the first light.
  • the laser is selectively transmitted. For example, when the wavelength conversion device 13 emits red light, red light can be transmitted according to a predetermined wavelength range, and the color correction film 14 allows only red light in the wavelength range to be transmitted, and red light in other wavelength ranges is not allowed. Through.
  • the color correction sheet 14 may be located on the same driving device 19 as the wavelength conversion device 13, or a driving member may be used alone, but it is necessary to ensure that the rotation of the color correction sheet 14 is synchronized with the wavelength conversion device 13. In this embodiment, the color correction sheet 14 and the wavelength conversion device 13 are located in the same driving device 19, and are respectively fixed to opposite ends of the driving device 19.
  • FIG. 3 is a schematic view of a color correction film in the light source system shown in FIG. 1.
  • the plurality of color segments of the color correction film 14 can be disposed in one-to-one correspondence with the respective regions of the wavelength conversion device 13, that is, red light is also included.
  • the color segments on the color correction sheet 14 are arranged such that when the second light source 12 is turned on, the color segments on the color correction sheet 14 that are in the optical path are also capable of transmitting supplemental light red light.
  • the yellow color segment transmits both yellow and red light.
  • FIG. 5 is a schematic diagram of a color correction sheet in the embodiment corresponding to FIG. 4, since the second light source 12 is turned on in a yellow light region, a red light region, and a partial green light region.
  • the color segment of the corresponding color correction sheet 14 in the region transmits the supplemental red light in addition to the yellow, red and green light.
  • the first laser light emitted from the first light source 11 is irradiated onto the wavelength conversion device 13 driven by the driving device to form time-series light
  • the wavelength conversion device 13 includes at least three primary color light regions and one In the mixed color light region
  • the time series light includes at least three primary color lights and one mixed color light.
  • the second light source 12 emits supplemental light having the same color as a primary color light emitted from the wavelength conversion device 13, and the primary color light is the lowest luminous efficiency among the outgoing light of the wavelength conversion device 13, and the mixed color light and the spectrum of the primary color light At least partially overlapping, at least in the same color primary light region (the same primary color light region as the complementary light color) receiving all of the first laser light and the mixed color light region receiving the first laser for all the time periods, turning on the second light source 12 to emit the complementary light, The supplemental light is combined with the light emitted by the wavelength conversion device 13 to be combined.
  • the technical solution supplements the "short board" in the outgoing light of the wavelength conversion device 13 by using an independent supplemental light source, thereby maximally improving the light extraction efficiency and total luminous flux of the light source system 10; meanwhile, due to the spectrum of the mixed color light and the complementary light The spectra of the same color base light at least partially overlap, avoiding excessive change of the color coordinates after the mixed color light and the supplementary photosynthetic light, which can make the size of each region of the wavelength conversion device 13 more convenient; in addition, due to the spectrum and supplement of the mixed color light The spectra of the homochromatic primary light of the light at least partially overlap, meaning that the mixed color spectrum and the complementary light spectrum at least partially overlap, so that the combined color of the two is better.
  • the complementary light source When the complementary light source is turned on in the same color base light region and the mixed color light region, the time periods of the two regions can be utilized to the utmost without worrying that the light source system 10 emits light incomplete or the brightness of a certain color is insufficient; if in the different color primary light region
  • the second light source 12 is turned on. In order to ensure that sufficient monochromatic primary light is emitted, the second light source 12 cannot be turned on for a long time, which has a limited effect on improving the utilization of the supplementary light source.
  • the supplementary light is red light
  • the mixed color light is a technical solution of the outgoing light of the yellow light region of the wavelength conversion device 13, which belongs to a specific technical solution described in the embodiment.
  • the first light source 11 when the light source system 10 is in an operating state, the first light source 11 is always turned on to increase the utilization rate of the first light source 11.
  • the control device 18 controls the second light source 12 to be in an on state.
  • this embodiment can not only improve the utilization rate of the second light source 12, but can further maximize the luminous flux of the white light finally obtained.
  • the first light source 11 is an ultraviolet light source
  • the blue light region of the wavelength conversion device 13 is a blue fluorescent region, which absorbs ultraviolet light and emits blue light.
  • FIG. 6 is a schematic structural view of a second embodiment of a light source system according to the present invention.
  • the wavelength conversion device 13 of the light source system 10 is a reflective color wheel, and the color modification sheet 14 and the wavelength conversion device 13 are disposed on an integrated member.
  • the color correction sheet 14 is fixed to the periphery of the color wheel.
  • This structure can simplify the structure of the color wheel and the color correction sheet, save materials, reduce cost, and at the same time facilitate heat dissipation and improve service life.
  • the color wheel reflects the supplemental light and the second light. By providing a plurality of sets of reflective lenses, the combined complementary light and the second light are directed toward the color correction film 14.
  • the structure may open the second light source 12 when the first laser light is received in at least two regions of the red light region, the yellow light region, and the partial region of the green light region, so that the finally emitted light flux is increased.
  • the first light source 11 is a blue laser
  • the plurality of regions of the wavelength conversion device 13 include a reflection region, and the first laser light is reflected to directly obtain the blue light.
  • the reflective area is a diffuse reflection area to change the light distribution of the blue laser to make it more uniform.
  • the difference between the wavelength conversion device 13 and the color correction film 14 in the light source system 10 is different from that of the above embodiment.
  • the color-changing sheet 14 and the wavelength conversion device 13 are two independent components, which are stacked and driven by the same driving device 19, and the color-changing sheet 14 is fixed to the driving device 19 by the color wheel.
  • the arrangement can make the color correction sheet 14 easy to install and disassemble, and for the design of the optical path, the wavelength conversion device 13 can also be designed in various modes, and has strong adaptability.
  • the light combining unit 16 of the light source system in the present embodiment is located on the optical path of the second light emitted by the wavelength conversion device 13, and receives the same.
  • the second light and the supplementary light are combined and emitted.
  • the second light source 12 is located on the side of the wavelength conversion device 13 that faces away from the first light source 11.
  • the second light source 12 is located on the side of the wavelength conversion device 13 that faces away from the first light source 11, that is, the supplemental light does not pass through the wavelength conversion device 13 and the color correction sheet 14, and is directly combined with the second optical light, which can make the supplement Light does not cause light loss on the wavelength conversion device 13.
  • the light combining unit 16 may be a reflective lens having a region that can transmit the second light, reflect the supplemental light, or a region that can reflect the second light and transmit the supplemental light, and the combined light of the second light and the complementary light is The geometric combination of light, the structure is relatively simple, the cost is low, although the second light is lost a small part, but does not affect the overall light extraction efficiency.
  • the arrangement of the structure can also provide the light homogenizing component 17 at the light exiting port, so that the white light after the light combining is more uniform and the brightness is good.
  • the white light after the light combining is more uniform and the brightness is good.
  • Another object of the present invention is to provide a projection device (not shown) including a light source system, a optomechanical system (not shown), and a display screen (not shown), the optomechanical system being located at the light exit of the light source system, receiving The light is emitted and projected onto a display screen, and the light source system is the above-described light source system. Since the light source system of the projection device adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are not repeatedly described herein.

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Abstract

一种光源系统（10）及投影装置，光源系统（10）包括第一光源（11），出射第一激光；波长转换装置（13），包括三基色光区域和一混合色光区域；驱动装置（19），驱动波长转换装置（13）运动，使波长转换装置（13）的各个区域依时序周期性接收第一激光；第二光源（12），出射补充光，补充光与一基色光区域的出射光颜色一致；控制装置（18），控制第二光源（12）的开关，在同颜色基色光区域接收第一激光的全部时段、混合色光区域接收第一激光的全部时段和一异颜色基色光区域接收第一激光的部分时段的三者中的至少两者内，控制装置（18）控制第二光源（12）打开。从而可得到一种光通量高且补充光源利用率高的光源系统（10）。

Description

光源系统及投影装置 技术领域
本发明涉及光源技术领域，特别涉及一种光源系统，及应用所述光源系统的投影装置。
 背景技术
对于单DLP投影系统中使用的激光荧光白光光源系统中，其波长转换装置一般采用分段式色轮，至少包含R，G，B三色。投影系统一般会对白光光源的白场颜色有要求，故分段式色轮中的R，G，B三色所占的比例会相对比较固定。
由于在激光荧光白光光源系统中红色荧光的发光效率比较低，为了提高红光亮度，光源系统中在出射RGB三色光的主光源之外，通常增加一个红光补充光源。然而，目前的光源系统中若使用补充光源，均是在其所对应的色段使用。
技术问题
如现有技术CN201380035912.6中，主光源为蓝光激发荧光色轮得到的RGB时序光，补充光源是红光激光光源，当色轮转到红色段时才打开补充光源，使得红色荧光与红色激光叠加成为光源系统的红光。但是这样的系统中，补充光源只在荧光色轮的红色段处于激发光照射下时才开启，导致补充光源大量时间处于闲置状态，其利用率很低，增加成本的同时并没有对光源系统亮度的提升提供应有的贡献。
 技术解决方案
本发明的主要目的在于提供一种光源系统，旨在得到一种光通量高且补充光源利用率高的光源系统。
为实现上述目的，本发明提供了一种光源系统，包括：第一光源，出射第一激光；波长转换装置，位于所述第一激光的光路上，用于接收第一激光并出射第二光，所述波长转换装置至少包括三个基色光区域和一混合色光区域；驱动装置，驱动所述波长转换装置运动，使所述波长转换装置的各个区域依时序周期性接收所述第一激光，所述三个基色光区域接收所述第一激光而出射三种的基色光，其中每一基色光区域出射一种基色光，所述混合色光区域接收所述第一激光而出射混合色光；第二光源，出射补充光，该补充光与所述三种基色光中的一种基色光的颜色一致；控制装置，控制第二光源的开关，在同颜色基色光区域接收所述第一激光的全部时段、混合色光区域接收所述第一激光的全部时段和一异颜色基色光区域接收所述第一激光的部分时段该三者中的至少两者内，所述控制装置控制所述第二光源打开，所述同颜色基色区域为所述三个基色光区域中出射的基色光与所述补充光颜色相同的基色光区域，所述异颜色基色区域为所述三个基色光区域中出射的基色光与所述补充光颜色不同的基色光区域。
优选地，至少在所述同颜色基色光区域接收所述第一激光的全部时段和所述混合色光区域接收所述第一激光的全部时段，所述控制装置控制所述第二光源打开；所述混合色光与所述补充光的光谱至少部分重叠。
可选地，还包括修色片，该修色片位于所述第二光的光路上，与所述波长转换装置同步运动，所述修色片包括多个色段，所述多个色段与所述波长转换装置的所述各个区域一一对应，用于接收所述第二光，并透射至少部分所述第二光。
可选地，当所述控制装置控制所述第二光源打开时，所述修色片处于所述第二光的光路上的色段允许所述补充光通过。
可选地，当所述光源系统处于工作状态时，所述第一光源一直开启。
可选地，所述第一光源为蓝光激光光源，所述第二光源为红光光源，所述波长转换装置的混合色光区域为黄光区域，所述波长转换装置的基色光区域包括红光区域。
可选地，当所述波长转换装置的红光区域和黄光区域接收第一激光时，所述控制装置控制所述第二光源处于开启状态。
可选地，还包括合光单元，位于所述第一光源与所述波长转换装置之间的光路上，接收所述第一激光与所述补充光，并使两者合光后射向所述波长转换装置。
可选地，还包括合光单元，位于所述波长转换装置的出射光光路上，其接收所述第二光与所述补充光，将两者进行合光后射出。
本发明还提供了一种投影装置，包括光源系统、光机系统及显示屏幕，所述光机系统位于所述光源系统的出光口，接收出射光并投影至显示屏幕，所述光源系统为上述的光源系统。
 有益效果
本发明技术方案中，光源系统中设置第二光源，用于发射补充光，补充光可以提高某一基色光的光通量，从而可以适当减小该基色光所占波长转换装置的区域的大小，并增大其他基色光的区域大小，从而可改善出光的颜色，提高光源系统的出光亮度。本技术方案中，通过在同颜色基色光区域接收所述第一激光的全部时段、混合色光区域接收所述第一激光的全部时段和一异颜色基色光区域接收所述第一激光的部分时段该三者中的至少两者内打开第二光源，可以提高该第二光源的利用率，并提高出射光的总光通量。
 附图说明
为了更清楚地说明本发明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发明的一些实施例，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示出的结构获得其他的附图。
图1为本发明光源系统第一实施例的结构示意图；
图2为图1所示光源系统中波长转换装置一实施例的示意图；
图3为图1所示光源系统中修色片一实施例的示意图；
图4为图1所示光源系统中波长转换装置另一实施例的示意图；
图5为图1所示光源系统中修色片另一实施例的示意图；
图6为本发明光源系统第二实施例的结构示意图；
图7为本发明光源系统第三实施例的结构示意图；
图8为本发明光源系统第四实施例的结构示意图。
附图标号说明：
标号 名称 标号 名称
10 光源系统 15 合光单元
11 第一光源 16 合光单元
12 第二光源 17 匀光组件
13 波长转换装置 18 控制装置
131 扇形区域 19 驱动装置
14 修色片
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
 本发明的最佳实施方式
光源系统的最大亮度由其出射的白光亮度决定，为了能够得到标准白光，组成该白光的三基色光（例如但不限于红光、蓝光和绿光）需要遵循一定的比例进行混合。设一基色光的相对亮度为该基色光的亮度与标准白光中该基色光的百分比的比值，当光源系统发出的各个基色光的相对亮度不同时，光源系统的白光亮度取决于相对亮度最低的基色光。这时，我们可以通过增加该基色光的亮度或者降低其他两基色光的亮度得到白光。这里的白光概念既适用于三基色光混合后直接得到的白光，也适用于三基色在时序上依靠人眼的视觉暂留效应得到的白光。
现有技术通过增加一基色光对应的光源作为补充光源，与激光激发荧光色轮出射时序光的主光源结合，提高该基色光的光通量，从而提高光源系统的整体亮度，然而该补充光源开启时间太短，该光源未能得到有效应用，使得光源系统的亮度提高有限。
本发明的发明构思在于，不局限于在补充光源对应的基色光的发光时段开启补充光源，而在更多的时段开启补充光源以获得对该补充光源的最大利用程度，从而大幅提高光源系统的亮度。该过程相当于引入了三基色之外的另一个混合色（该混合色由补充光和主光源发出的与补充光颜色不同的另一颜色的光组成），将该混合色参与到合成白光的计算中，计算各个颜色在标准白光中所占比例，从而对主光源（激光照射运动的波长转换装置而出射时序光的光源）的各时序光所占的时间比例进行调整，降低主光源中效率低的颜色光所占的时间比例并提高主光源中效率高的颜色光所占的时间比例。
更加详细的说明，在现有技术基础上，不改变光调制规则及光源系统结构，额外增加了一个时段开启补充光源，则该光源系统出射的白光的色坐标向补充光的颜色方向偏移。为了使得白光的色坐标回到标准白光色坐标，则需要通过改变光源系统的各色光的时段，增加光源系统的补充光之反色光的成分比例。由于每个周期的时间是固定的，增加补充光之反色光的时段的同时，需要减少补充光对应的色光的时段，但是这不代表补充光源的开启时间会相对现有技术缩短。这是由于最终补充光之反色光的时段一定长于现有技术中的该反色光的时段，也就是说光源系统的该反色光的强度将增加，同时光源系统的白光的强度也将增加。由于光源系统的总输出强度增加，激发光源的强度和开启时间不变，补充光源的输出强度不变，必然意味着补充光源的开启时间增长，也就提高了补充光源的利用率。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
另外，本发明各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种光源系统10。
请参照图1，在本发明一实施例中，光源系统10包括第一光源11，出射第一激光；波长转换装置13，位于第一激光的光路上，用于接收第一激光并出射第二光，波长转换装置13包括多个区域（未标示），该多个区域包括三个基色光区域和一混合色光区域，其中三个基色光区域接收第一激光而出射三种的基色光，其中每一基色光区域出射一种基色光，混合色光区域接收第一激光而出射混合色光；驱动装置19，驱动波长转换装置13运动，使波长转换装置13的各个区域依时序周期性接收第一激光；第二光源12，出射补充光，该补充光为一基色光，且与波长转换装置13出射的三种基色光中的一种基色光的颜色一致，补充光与第一激光合光后入射到波长转换装置13，并最终与波长转换装置13发出的第二光一同出射。
光源系统10还包括控制装置18，控制第二光源12的开关。已知波长转换装置13的多个区域中至少包括：同颜色基色光区域（同颜色基色区域为三个基色光区域中出射的基色光与补充光颜色相同的基色光区域）、混合色光区域和异颜色基色光区域（异颜色基色区域为三个基色光区域中出射的基色光与补充光颜色不同的基色光区域），在同颜色基色光区域接收第一激光的全部时段、混合色光区域接收第一激光的全部时段和一异颜色基色光区域接收第一激光的部分时段该三者中的至少两者内，控制装置18控制第二光源12打开。
在本实施例中，第一光源11为蓝光激光光源，其出射的第一激光为蓝色激光。激光光源具有能量密度大、光谱窄的优点，适于高亮度高色彩显示范围的投影显示领域。在本发明的一实施方式中，第一光源11也可以为蓝紫光激光光源或者紫外激光光源，还可以是其他非激光的固态光源，如LED光源，特别是高亮度LED光源。第一光源11既可以是激光器光源，也可以是激光二极管光源或激光二极管阵列光源。
第一光源11发出的第一激光入射到波长转换装置13，波长转换装置13在驱动装置19的驱动下相对于第一激光运动，使得波长转换装置13上的各个区域依时序周期性的处于第一激光的路径上。在本实施例中，波长转换装置13包括表面涂覆有荧光材料的透明基材。透明基材可以是光学玻璃、蓝宝石、透明陶瓷等材料，其表面涂覆的荧光材料可以包括荧光粉、量子点等材料；其中，荧光材料通过粘结材料形成荧光层，粘结材料既可以为硅胶、环氧树脂等有机材料，也可以为玻璃、陶瓷等无机材料。此外，在本发明的一个实施方式中，波长转换装置13的荧光材料包裹于透明基材内，而非与透明基材各自成层。
请参照图2，图2为图1所示光源系统中波长转换装置13的示意图，其中，波长转换装置13呈一圆盘形，包括红绿蓝黄四个扇形区域131。在显示领域，通常以红（R）、绿（G）、蓝（B）作为三基色（但不限于），以表现各种颜色；为提高亮度，在三基色的基础上进一步增加黄色，使得白色（也即显示装置能够显示的最亮色）的亮度进一步提高。本实施例采用红绿蓝黄四个区域，对应红绿蓝三基色以及一个混合色黄色。其中，红光区域、绿光区域和黄光区域（即混合色光区域）分别包含红光荧光材料、绿光荧光材料和黄光荧光材料，分别接收第一激光蓝光后，将其转换为红光、绿光和黄光的受激发光。波长转换装置13的蓝光区域为一透射区域，用于透射第一激光蓝光，直接作为显示的色光。在一个实施方式中，该透射区域内包含散射材料，用于改变蓝光激光的光分布，以避免蓝光激光在屏幕上出现干涉光斑。
可以理解，上述波长转换装置13接收第一激光而发射的受激发光以及透射过波长转换装置13的第一激光，都属于第二光，此时，第二光为一个受激发光与透射的第一激光的时序光。
本实施例中，波长转换装置13的各区域呈扇形。在本发明的另一个实施方式中，波长转换装置13同样呈一圆盘形，但是其上各个颜色区域呈扇环形，并共同拼接成为一个圆环形。
在本实施例中，波长转换装置13为色轮，在驱动装置19（如马达）的驱动下绕其中轴转动。在本发明的另一实施方式中，波长转换装置13还可以为色桶/色筒，包括沿桶/筒面环绕分布的多个区域，色桶/色筒绕其轴线方向旋转，以使该多个区域依时序周期性处于激发光源的照射下；在本发明的又一实施方式中，波长转换装置13还可以为色板，包括沿一直线方向依次排布的多个区域，色板沿该直线方向线性振动，以使该多个区域依时序周期性处于激发光源的照射下。
本实施例中，第二光源为12为红光光源，其出射的红光作为补充光，提高光源系统10的红色显示效果。选择红光作为补充光源，缘于红光荧光材料的发光效率相对较低，使得红色相对于其他颜色效果较差。当然，随着材料科学的进步，在其他实施方式中，也可以选择其他基色的光源作为第二光源的补充光。第二光源可以为激光光源、LED光源。
在本实施例中，光源系统包括合光单元15，位于第一光源11与波长转换装置13之间的光路上，第二光源12发出的补充光与第一光源11发出的第一激光在入射到波长转换装置13之前通过合光单元15合光，该合光后的光入射到波长转换装置13。由于补充光为红光，该光不会被波长转换装置13的各区域吸收并转换，不产生激发作用，而是穿过波长转换装置13，与第二光一同出射（若补充光为其他颜色光，也以该补充光不在波长转换区域产生激发作用为优选）。在本实施例中，合光单元15为一二向色片（具体为波长滤光片），具有将第一激光进行透射、将补充光进行反射的区域。当然，可以理解，该二向色片也可以透射补充光并反射第一激光，只要将第一光源11与第二光源12的位置调换即可。通过在光束入射到波长转换装置之前将补充光与第一激光合光，可以使得最终出射光的各个组成光的光分布更相近、使得出射光的颜色均匀性更好。
本实施例中的合光单元15利用第一激光与补充光波长的不同来进行合光，在其他实施方式中，也可以利用两光的偏振态不同进行合光，还可以利用两光光束的空间位置不同或光束截面积大小不同进行几何合光。在本发明的一个实施方式中，也可以没有合光单元15，补充光和第一激光分别从不同的角度入射到波长转换装置13。
本实施例中，控制装置18控制第二光源12的开关。当波长转换装置13的红光区域接收第一激光照射而发出红光以及当波长转换装置13的黄光区域接收第一激光照射而发出黄光时，控制装置18控制第二光源12开启，使得补充光红光分别与波长转换装置13的红光和黄光一同出射，形成光源系统10的出射光。此时，波长转换装置13出射的黄光与第二光源12出射的红光组成橙光，光源系统10相当于出射红绿蓝橙四色时序光。由此，第二光源12的利用率相对于现有技术有了巨大提高，而光源系统10的出射光光通量大大增加。
具体原理为，为得到标准色坐标的白光，光源系统10出射的时序光中各个颜色需呈一定的比例，当波长转换装置13的各色段区域不变的情况下，出射光从红绿蓝黄四色变为红绿蓝橙四色，白光由标准色坐标变得偏红；为使白光重新变为标准白色，需要减少红色的量，并增加蓝、绿色的量。最直观的，需要增大波长转换装置13上的蓝色、绿色的区域大小，并减小红色区域或黄色区域的大小。由于蓝光、绿光的发光效率远大于红光的发光效率，而且绿光对白光亮度的影响最大，因此该技术方案下能够大幅提高光源系统10的出射光亮度。
举例说明，若在现有技术中波长转换装置为四等分的红绿蓝黄区域设置，则当采用本案的技术方案时，在黄区域也开启第二光源补光，为得到标准的白光，波长转换装置13将替换为如图2所示的波长转换装置。波长转换装置13上的基色光区域（红绿蓝区域）与混合色光区域（黄区域）所占的面积关系可如下（该面积关系仅为讨论方便，并非实际面积关系）：红光区域与蓝光区域的面积相等，且两者面积之和等于绿光区域和黄光区域的面积之和，绿光区域的面积大于黄光区域的面积。
在本发明的另一实施方式中，第二光源12除了在红光区域和黄光区域接收第一激光照射时开启，还在绿光区域的部分区域接收第一激光照射时开启。请参照图4，该技术方案相当于将主光源的红绿蓝黄四色替换成了光源系统10的红绿蓝橙黄五色，其中的橙色由主光源的黄光和第二光源的红光合成，其中的黄色由主光源的绿光和第二光源的红光合成。在上述实施例的光源系统中套用本技术方案，进一步使得白光色坐标向红色偏移，也就进一步要求增大绿色区域来获得白平衡，使得光源系统10的出射光亮度进一步提高。需要注意的是，不能在全部绿色区域都开启第二光源进行补光，这是由于单色绿光的光通量占出射光的比例有最低要求，否则光源系统将无法表现单色绿色。同样的，在其他任何技术方案中，都不能在非补充光颜色的基色光区域一直开启补充光源，否则将无法表现该基色光单色。
在本发明的另一个实施方式中，第二光源12除了在红光区域和黄光区域接收第一激光照射时开启，还在绿光区域的部分区域以及蓝光区域的部分区域接收第一激光照射时开启。该技术方案同样能够增加第二光源12的利用率，并提高光源系统10的光通量。
在本发明的其他实施方式中，第二光源12也可以仅在黄光区域接收第一激光照射时以及部分绿光区域接收第一激光照射时开启，或者第二光源在黄光区域接收第一激光照射时和部分蓝光区域接收第一激光照射时开启，或者第二光源12在红光区域接收第一激光照射时以及部分绿光区域接收第一激光照射时开启。
在一实施例中，如图1所示，光源系统10还包括修色片14，该修色片14位于波长转换装置13发出的第二光的光路上。在本实施例中，修色片14与波长转换装置13同步运动，修色片14包括多个色段，该多个色段与波长转换装置13的多个区域一一对应，用于接收第二光，并透射至少部分第二光。
修色片14可以对接收到的第二光的光谱峰进行修饰，使射出的第二光的色坐标符合出光要求；同时，该修色片14还可以对所接收的第二光及第一激光进行选择性透射。例如，当波长转换装置13出射红光时，依据预设某一波长范围的红光可以透射，则修色片14只允许该波长范围内的红光透过，其他波长范围的红光不允许透过。该修色片14可以与波长转换装置13位于同一驱动装置19上，也可以单独使用一驱动件，但需要保证修色片14的转动与波长转换装置13同步。本实施例中，修色片14与波长转换装置13位于同一驱动装置19，并且分别固接于驱动装置19相对的两端。
如图3所示，图3为图1所示光源系统中修色片的示意图，修色片14的多个色段可与波长转换装置13的各个区域一一对应设置，即也包括红光色段、蓝光色段、绿光色段及黄光色段。而且，修色片14上的色段设置使得当打开第二光源12时，修色片14上处于光路的色段也能够透射补充光红光。如图所示，黄光色段既透射黄光又透射红光。
如图5所示，图5为图4对应的实施方式中的修色片的示意图，由于第二光源12在黄光区域、红光区域及部分绿光区域开启 ，该区域对应的修色片14的色段除了透射黄光、红光和绿光外，同时透射补充光红光。
在本发明的一个实施方式中，第一光源11出射的第一激光照射到被驱动装置驱动而运动的波长转换装置13上，形成时序光，波长转换装置13至少包括三个基色光区域和一混合色光区域，则该时序光至少包括三个基色光和一个混合色光。第二光源12出射补充光，该补充光与波长转换装置13出射的一个基色光颜色相同，而且该基色光为波长转换装置13的出射光中发光效率最低的，混合色光与该基色光的光谱至少部分重叠，至少在同颜色基色光区域（与补充光颜色相同的基色光区域）接收第一激光的全部时段和混合色光区域接收第一激光的全部时段，开启第二光源12出射补充光，使补充光与波长转换装置13发出的光合光出射。该技术方案利用独立的补充光源对波长转换装置13的出射光中的“短板”进行补充，最大程度的提高了光源系统10的出光效率和总光通量；同时，由于混合色光的光谱与补充光的同色基色光的光谱至少部分重叠，避免了混合色光与补充光合光后色坐标变化过大，可以使得在波长转换装置13的各区域大小设置时更加便利；此外，由于混合色光的光谱与补充光的同色基色光的光谱至少部分重叠，意味着混合色光光谱与补充光的光谱至少部分重叠，使得两者的合光颜色的显示效果更好。在同颜色基色光区域和混合色光区域开启补充光源，可以最大限度的利用该两个区域的时段而不必担心光源系统10出射光颜色不全或某一颜色的亮度不足；若在异颜色基色光区域开启第二光源12，为保证能够有足够的单色基色光出射，第二光源12开启的时间不能过长，这对提高补充光源的利用率作用有限。在上述图1的一实施例中，补充光为红光，混合色光为波长转换装置13的黄光区域的出射光的技术方案，就属于本实施方式描述的一个具体技术方案。
本发明的一实施例中，当光源系统10处于工作状态时，第一光源11一直开启，以提高第一光源11的利用率。
特别的，当波长转换装置13的红光区域和黄光区域接收第一激光时，控制装置18控制第二光源12处于开启状态。该实施例相对于其他实施例，不仅可以提高第二光源12的利用率，可以更进一步使最终得到的白光光通量最高。
在本发明的一实施方式中，第一光源11为紫外光源，此时波长转换装置13的蓝光区域为蓝色荧光区域，吸收紫外光并发出蓝光。
请参照图6，图6为本发明光源系统第二实施例的结构示意图。本发明的第二实施例中，与第一实施例不同的是，该光源系统10的波长转换装置13为反射式色轮，且修色片14与波长转换装置13设置在一个集成构件上，为同一驱动装置19驱动，修色片14固接于色轮的周缘，该结构可以简化色轮与修色片的结构，节约材料，使得成本降低，同时有利于散热，提高使用寿命。该色轮将补充光及第二光反射，通过设置多组反射镜片，使得合光后的补充光与第二光射向修色片14。该结构可以在红光区域、黄光区域及绿光区域的部分区域的至少两区域接收第一激光时打开第二光源12，以使得最终出射的光通量增大。在本实施例中，第一光源11为蓝光激光时，波长转换装置13的多个区域中包括反射区域，对第一激光进行反射，从而直接获得蓝光出射光。进一步的，该反射区域为漫反射区域，以改变蓝光激光的光分布，使其更加均匀。
本实施例的其他变形实施方式可以参照上述实施例中与本实施例不冲突的技术方案。
请参照图7，本发明的第三实施例中，与上述实施例不同的是，该光源系统10中波长转换装置13与修色片14的固接方式。本实施例中，修色片14与波长转换装置13为独立的两个构件，层叠设置并为同一驱动装置19驱动，修色片14临接色轮固接于驱动装置19上，该结构的设置，可以使得修色片14便于安装与拆卸，同时对于光路的设计，该波长转换装置13还可以进行多种模式的设计，适应性强。本实施例的其他变形实施方式可以参照上述实施例中与本实施例不冲突的技术方案。
请参照图8，本发明的第四实施例中，与第一实施例不同的是，本实施例中光源系统的合光单元16位于波长转换装置13出射的第二光的光路上，其接收第二光与补充光，将两者进行合光后射出。此时，第二光源12位于波长转换装置13背离第一光源11的一侧。
本实施例中，第二光源12位于波长转换装置13背离第一光源11的一侧，即补充光不通过波长转换装置13及修色片14，直接与第二光合光射出，这样可以使得补充光不会在波长转换装置13上产生光损失。合光单元16可以是反射镜片，反射镜具有可以透射第二光，反射补充光的区域，或者具有可以反射第二光，透射补充光的区域，这种第二光与补充光的合光为几何合光，结构较为简单，成本低，虽会使得第二光损失掉一小部分，但是不影响整体的出光效率。该结构的设置还可以在出光口设置匀光组件17，使合光之后的白光出射更加均匀，亮度好。本实施例的其他变形实施方式可以参照上述实施例中与本实施例不冲突的技术方案。
本发明的另一目的在于提出一种投影装置（未图示），包括光源系统、光机系统（未图示）及显示屏幕（未图示），光机系统位于光源系统的出光口，接收出射光并投影至显示屏幕，光源系统为上述的光源系统。由于投影装置的光源系统采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (10)

1、一种光源系统，其特征在于，包括：
第一光源，出射第一激光；
波长转换装置，位于所述第一激光的光路上，用于接收第一激光并出射第二光，所述波长转换装置至少包括三个基色光区域和一混合色光区域；
驱动装置，驱动所述波长转换装置运动，使所述波长转换装置的各个区域依时序周期性接收所述第一激光，所述三个基色光区域接收所述第一激光而出射三种的基色光，其中每一基色光区域出射一种基色光，所述混合色光区域接收所述第一激光而出射混合色光；
第二光源，出射补充光，该补充光与所述三种基色光中的一种基色光的颜色一致；
控制装置，控制第二光源的开关，在同颜色基色光区域接收所述第一激光的全部时段、混合色光区域接收所述第一激光的全部时段和一异颜色基色光区域接收所述第一激光的部分时段该三者中的至少两者内，所述控制装置控制所述第二光源打开，所述同颜色基色区域为所述三个基色光区域中出射的基色光与所述补充光颜色相同的基色光区域，所述异颜色基色区域为所述三个基色光区域中出射的基色光与所述补充光颜色不同的基色光区域。
2、如权利要求1所述的光源系统，其特征在于，至少在所述同颜色基色光区域接收所述第一激光的全部时段和所述混合色光区域接收所述第一激光的全部时段，所述控制装置控制所述第二光源打开；
所述混合色光与所述补充光的光谱至少部分重叠。
3、如权利要求1或2所述的光源系统，其特征在于，还包括修色片，该修色片位于所述第二光的光路上，与所述波长转换装置同步运动，所述修色片包括多个色段，所述多个色段与所述波长转换装置的所述各个区域一一对应，用于接收所述第二光，并透射至少部分所述第二光。
4、如权利要求3所述的光源系统，其特征在于，当所述控制装置控制所述第二光源打开时，所述修色片处于所述第二光的光路上的色段允许所述补充光通过。
5、如权利要求1或2所述的光源系统，其特征在于，当所述光源系统处于工作状态时，所述第一光源一直开启。
6、如权利要求1或2所述的光源系统，其特征在于，所述第一光源为蓝光激光光源，所述第二光源为红光光源，所述波长转换装置的混合色光区域为黄光区域，所述波长转换装置的基色光区域包括红光区域。
7、如权利要求6所述的光源系统，其特征在于，当所述波长转换装置的红光区域和黄光区域接收第一激光时，所述控制装置控制所述第二光源处于开启状态。
8、如权利要求1或2所述的光源系统，其特征在于，还包括合光单元，位于所述第一光源与所述波长转换装置之间的光路上，接收所述第一激光与所述补充光，并使两者合光后射向所述波长转换装置。
9、如权利要求1或2所述的光源系统，其特征在于，还包括合光单元，位于所述波长转换装置的出射光光路上，其接收所述第二光与所述补充光，将两者进行合光后射出。
10、一种投影装置，包括光源系统、光机系统及显示屏幕，其特征在于，所述光机系统位于所述光源系统的出光口，接收出射光并投影至显示屏幕，所述光源系统为权利要求1至9任一所述的光源系统。
PCT/CN2017/081306 2016-12-15 2017-04-20 光源系统及投影装置 Ceased WO2018107634A1 (zh)

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