WO2019041803A1 - 色轮和激光投影设备 - Google Patents

色轮和激光投影设备 Download PDF

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Publication number
WO2019041803A1
WO2019041803A1 PCT/CN2018/081178 CN2018081178W WO2019041803A1 WO 2019041803 A1 WO2019041803 A1 WO 2019041803A1 CN 2018081178 W CN2018081178 W CN 2018081178W WO 2019041803 A1 WO2019041803 A1 WO 2019041803A1
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WIPO (PCT)
Prior art keywords
fluorescent
annular portion
color filter
color
laser
Prior art date
Application number
PCT/CN2018/081178
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English (en)
French (fr)
Inventor
赵飞
Original Assignee
海信集团有限公司
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Filing date
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Application filed by 海信集团有限公司 filed Critical 海信集团有限公司
Publication of WO2019041803A1 publication Critical patent/WO2019041803A1/zh

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    • 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
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection
    • 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
    • G03B21/2066—Reflectors in illumination beam
    • 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
    • G03B21/208—Homogenising, shaping of the illumination light

Definitions

  • the present disclosure relates to a color wheel and laser projection apparatus.
  • light source systems typically use blue lasers and phosphors to achieve illumination.
  • the basic working principle of illuminating is that the blue laser excites the phosphor on the fluorescent wheel to produce fluorescence of various primary colors.
  • some embodiments of the present disclosure provide a color wheel comprising:
  • a substrate including a first annular portion and a second annular portion
  • the fluorescent block being configured to emit fluorescence after being irradiated with laser light, wherein
  • the second annular portion includes at least one color filter portion, and the color filter portion is configured to filter the fluorescence, and wherein
  • the inner circumference of the second annular portion is not smaller than the outer circumference of the first annular portion, or the outer circumference of the second annular portion is not larger than the inner circumference of the first annular portion.
  • some embodiments of the present disclosure provide a laser projection apparatus comprising:
  • a laser emitter configured to provide a laser
  • Color wheel including:
  • a substrate including a first annular portion and a second annular portion
  • At least one fluorescent block disposed on the first annular portion, the fluorescent block being configured to emit fluorescence after receiving laser irradiation, wherein
  • the second annular portion includes at least one color filter portion, and the color filter portion is configured to filter the fluorescent light, and wherein
  • the inner circumference of the second annular portion is not smaller than the outer circumference of the first annular portion, or the outer circumference of the second annular portion is not larger than the inner circumference of the first annular portion.
  • FIG. 1 shows a schematic structural view of a laser projection apparatus.
  • FIG. 2 shows a schematic structural view of a color wheel in some embodiments of the present disclosure.
  • FIG 3 shows a cross-sectional view of a color wheel in some embodiments of the present disclosure.
  • FIG. 4 shows a cross-sectional view of another color wheel in some embodiments of the present disclosure.
  • FIG. 5 shows a schematic structural view of another color wheel in some embodiments of the present disclosure.
  • FIG. 6 shows a schematic structural view of still another color wheel in some embodiments of the present disclosure.
  • Fig. 7 shows a cross-sectional view taken along line AA' of Fig. 6.
  • Figure 8 shows a schematic diagram of a laser projection device in some embodiments of the present disclosure.
  • Figure 9 shows a schematic diagram of another laser projection device in some embodiments of the present disclosure.
  • Figure 10 shows a schematic diagram of yet another laser projection device in some embodiments of the present disclosure.
  • the annular portion is a ring-shaped portion of the substrate and may have a certain thickness;
  • the fan ring shape is the same shape of any fan shape and annular overlap at the same center as the center, and may have a certain thickness. .
  • Fig. 1 shows a schematic view of the structure of a laser projection apparatus.
  • the original light source is a blue laser diode (BLD) that emits a blue laser, and the optical path of the blue laser is marked as a solid line with an arrow in FIG.
  • the optical path of the fluorescent light reflected by the fluorescent wheel is marked in Figure 1 as a dashed line with an arrow.
  • the light source includes a reflective fluorescent wheel 105, a collimating telescope element, a dichroic element 103, a collecting lens 104, a collecting lens 106 and a collecting lens 112, a mirror 107 for reflecting the blue laser light, and a mirror 108,
  • the dichroic element 109, the color filter wheel 111 and the light pipe 110 is a blue laser diode (BLD) that emits a blue laser, and the optical path of the blue laser is marked as a solid line with an arrow in FIG.
  • the optical path of the fluorescent light reflected by the fluorescent wheel is marked in Figure 1 as
  • the collimating telescope element includes a lens 101 and a lens 102.
  • the reflective fluorescent wheel 105 generates fluorescence under the excitation of a blue laser and is rotatable under the driving of a motor.
  • the collimating telescope element is used to collimate the blue laser light incident on the fluorescent wheel 105.
  • the dichroic element 103 is disposed between the reflective fluorescent wheel 105 and the collimating telescope element to transmit the blue laser light incident thereon and to reflect the excited fluorescence.
  • the condensing lens 104 and the condensing lens 106 are respectively disposed on the incident light path on the front surface of the fluorescent wheel and the outgoing light path on the back surface, and are used for condensing.
  • the collecting lens 112 is disposed on the front incident light path of the color filter wheel 111 for collecting light.
  • the mirror 107 and the mirror 108 are for reflecting the blue laser light transmitted from the reflective fluorescent wheel 105 to the dichroic element 109.
  • the dichroic element 109 is disposed at the intersection of the optical path of the fluorescent light reflected from the dichroic element 103 and the blue laser optical path reflected from the blue reflecting mirror 108, and can transmit fluorescence and reflect the blue laser light.
  • the color filter wheel 111 is provided on the exiting light path of the blue laser beam and the fluorescent light and finally emitted to the light guide 110, and is used for filtering the fluorescence of various primary colors generated by the reflective fluorescent wheel 105.
  • Light pipe 110 can receive and conduct blue laser light or fluorescence.
  • the basic working principle of the laser projection apparatus is that the blue laser excites the fluorescent material on the reflective fluorescent wheel 105 to generate fluorescence of various primary colors. Since the fluorescence spectrum is relatively wide and the color saturation is low, a color filter wheel 111 is additionally provided to filter the various fluorescences generated by the fluorescent wheel 105 to enhance the color saturation and thereby enhance the color gamut.
  • Both the fluorescent wheel 105 and the color filter wheel 111 require motor drive.
  • each of the fluorescence conversion regions on the fluorescent wheel 105 corresponds to the color filter region on the color filter wheel 111 for filtering the corresponding fluorescence
  • the control program and the control circuit are used to ensure the two devices. High-speed synchronous operation.
  • the color wheel comprises a substrate, and the substrate comprises a first annular portion 3 and a second annular portion 4, the first annular portion 3 and the second annular portion 4 being nested, in some embodiments
  • the first annular portion 3 and the second annular portion 4 are concentrically arranged.
  • the inner circumference of the second annular portion 4 is not less than the outer circumference of the first annular portion 3, that is, the inner diameter of the second annular portion is not less than the outer diameter of the first annular portion, in other examples, The outer circumference of the second annular portion 4 is not larger than the inner circumference of the first annular portion 3, that is, the outer diameter of the second annular portion is not larger than the inner diameter of the first annular portion.
  • the color wheel further includes at least one fluorescent block 5 disposed on the first annular portion 3, and the fluorescent block 5 is configured to emit fluorescence corresponding to a predetermined wavelength band after receiving the laser irradiation.
  • the second annular portion 4 includes at least one color filter portion 41 configured to filter the fluorescent light. In some embodiments, the color filter 41 can also be used to filter the light emitted by the laser.
  • the fluorescent block 5 and the color filter portion 41 are disposed on the same transparent material substrate, so that the fluorescent wheel with the aluminum substrate and the color filter wheel with the glass substrate are disposed on the same driving shaft through one The motor is driven to reduce the size and weight and make the color wheel lighter.
  • the phosphor block 5 is formed of phosphor coated in a region on the substrate. In other embodiments, the phosphor block 5 is formed of an inorganic phosphor bonded in a region of the substrate.
  • the color filter portion 41 includes a first color filter portion 411, and the first color filter portion 411 is made of a material having a color filter function, that is, the first color filter portion. It is a part of the substrate, and the material of the first color filter portion is different from the material of the other portion of the second ring portion of the substrate except for the first color filter portion, and the material of the first color filter portion can transmit light of a predetermined wavelength band and absorb the designation. Light outside the wavelength. This material is, for example, a high polymer material.
  • the first color filter portion occupies a portion of the color filter portion.
  • the second ring portion corresponds to a central angle of 360°, and the central angle corresponding to the color filter portion is a first central angle.
  • the central angle corresponding to the color filter portion is a second central angle, and the second central angle is a portion of the first central angle and smaller than the first central angle.
  • the color filter portion 41 includes a main body portion 412 and a second color filter portion 413, and the second color filter portion 413 is made of a material having a color filter function.
  • the main body portion 412 is made of a transparent material, can transmit light
  • the substrate is a transparent substrate
  • the main body portion is a part of the transparent substrate
  • the second color filter portion 413 is a color filter film or filter coated on the main body portion. Color coating.
  • the arrangement of the fluorescent block 5 and the color filter portion 41 can be realized by using a transparent substrate and by plating different films on one substrate, which makes it easier to process.
  • the transparent substrate is a glass substrate.
  • the laser comprises a blue laser and the laser source is a blue laser emitter BLD.
  • the laser source is a light emitting diode (LED) that emits blue laser or ultraviolet light (UV), and the disclosure is not particularly limited herein.
  • the inner circumference of the second annular portion 4 is greater than or equal to the outer circumference of the first annular portion 3, and the embodiments described in the present disclosure are exemplified in this manner. In other embodiments, the outer circumference of the second annular portion 4 is less than or equal to the inner circumference of the first annular portion 3.
  • the laser light shown in FIGS. 8 and 9 is referred to in consideration of the position where the blue laser light illuminates the fluorescent block 5 and the position where the fluorescent light is irradiated to the color filter portion 41.
  • the projection device causes the blue laser light to correspond to the fluorescent block 5 to be irradiated, and accordingly, the fluorescence corresponds to the color filter portion 41 to which it is irradiated.
  • the position and the size of the first annular portion 3 and the second annular portion 4 of the color wheel provided by the embodiments of the present disclosure may be integrated according to the light source, and are not limited to the above embodiments, and the present disclosure is not particularly limited herein.
  • the at least one fluorescent block 5 includes at least two fluorescent blocks 5.
  • the at least two fluorescent blocks 5 emit at least one fluorescent color
  • the at least one color filter portion 41 includes at least two color filter portions 41
  • the at least two color filter portions 41 filter the at least one fluorescent color .
  • the at least one fluorescent block 5 includes a first fluorescent block 511 and a second fluorescent block 512.
  • the first fluorescent block 511 is configured to emit green fluorescence after being irradiated with laser light
  • the second fluorescent block 512 is configured to emit yellow fluorescence after being irradiated with laser light.
  • the at least two color filter portions 41 include a first color filter portion 421 and a second color filter portion 422 configured to filter green fluorescence emitted by the first fluorescent block 511 to obtain green light.
  • the second color filter portion 422 is configured to filter the yellow fluorescence emitted by the second fluorescent block 512 to obtain different colors of light such as yellow light, green light, and red light.
  • the at least two fluorescent blocks 5 are disposed on the first annular portion in the shape of a fan ring, and the at least two color filters 41 corresponding to the at least two fluorescent blocks 5 are The shape of the fan ring is set.
  • the first fluorescent block 511 and the second fluorescent block 512 are disposed on the first annular portion in the shape of a fan ring, and the first color filter portion 421 and the second color filter portion 422 are in the shape of a fan ring. Settings.
  • the first fluorescent block 511 and the second fluorescent block 512 have the same central angle, that is, the central angle of each of the fluorescent blocks 5 is 180°. Accordingly, the first color filter portion 421 and the second color filter portion 422 have the same central angle, that is, the central angle of each of the color filter portions 41 is 180°. In still other embodiments of the present disclosure, each of the fluorescent blocks 5 and the color filter portions 41 do not have the same central angle, and the central angle thereof is set according to the brightness requirement for fluorescence of different colors.
  • the at least one fluorescent block 5 includes a fluorescent block 5 disposed on a first annular portion in a circular ring shape, the at least one color filter portion 41 including a color filter disposed in a circular ring shape Part 41.
  • each of the at least one fluorescent block 5 is selected from the group consisting of at least one of a green fluorescent block, a yellow fluorescent block, or a red fluorescent block.
  • the fluorescent light emitted from the green fluorescent block is filtered by the color filter portion 41 to obtain green light.
  • Light of different colors such as yellow light, green light, and red light is obtained by filtering the fluorescence emitted from the yellow fluorescent block by using another color filter portion 41 (i.e., the color filter portion 41 of a different color at different positions).
  • Red light is obtained by filtering the fluorescence emitted from the red fluorescent block by using the further color filter portion 41 (i.e., the color filter portions 41 of different colors at different positions).
  • the at least one fluorescent block 5 includes at least one of a fluorescent block 5 excited by a purple laser, a fluorescent block 5 excited by a blue laser, and the like, and the present disclosure is not particularly limited herein. .
  • the at least one fluorescent block 5 includes only one fluorescent block 5 configured to emit fluorescence after being irradiated with laser light
  • the at least one color filter portion 41 includes a plurality of color filter portions 41.
  • the plurality of color filters 41 filter the fluorescence.
  • the at least one fluorescent block 5 includes only the yellow fluorescent block disposed on the first annular portion 3, and accordingly, the at least one color filter portion includes a plurality of color filter portions 41.
  • the fluorescent light emitted by the yellow fluorescent block after being irradiated with the laser light is filtered by the plurality of color filter portions 41 (that is, the color filter portions at different positions provided in the second annular portion 4), thereby obtaining yellow light, green light, and red light. Wait.
  • the fluorescent block 5 is disposed on the first annular portion 3 in a circular ring shape.
  • the plurality of color filters 41 include two, three, or even four color filters 41, which are disposed in the shape of a fan ring.
  • the plurality of color filter portions 41 have the same central angle.
  • the respective central angles of the respective color filters 41 are set according to the brightness requirements for different color fluorescence.
  • the first annular portion 3 includes a first transmissive portion capable of transmitting laser light, thereby directly providing laser light of a predetermined wavelength band as a color source.
  • the first transmitting portion is a region on the first annular portion 3 where the fluorescent block 5 is not provided. Since the laser source is, for example, a blue laser emitter BLD that emits a blue laser, in some embodiments, the first transmissive portion is referred to as a blue transmissive portion.
  • the second annular portion 4 further includes a second transmissive portion for transmitting or scattering laser light transmitted through the first transmissive portion 311.
  • a third fluorescent block 513, a fourth fluorescent block 514, and a fifth fluorescent block 515 are disposed on the first annular portion, and the first annular portion includes a first transmitting portion 516.
  • the second annular portion includes a third color filter portion 423, a fourth color filter portion 424, a fifth color filter portion 425, and a second transmission portion 426.
  • the third fluorescent block 513 corresponds to a green fluorescent block which emits fluorescence after being irradiated with laser light, and the third color filter portion 423 filters the fluorescent light to obtain green light.
  • the fourth fluorescent block 514 corresponds to a yellow fluorescent block which emits fluorescence after being irradiated with laser light, and the fourth color filter portion 424 filters the fluorescent light to obtain yellow light.
  • the fifth fluorescent block 515 corresponds to a red fluorescent block which emits fluorescence after being irradiated with laser light, and the fifth color filter portion 425 filters the fluorescent light to obtain red light.
  • the first transmitting portion 516 transmits the laser light
  • the second transmitting portion 426 is a transparent portion or a blue filter portion, and accordingly the laser light is transmitted or the laser light is filtered.
  • the third fluorescent block 513, the fourth fluorescent block 514, the fifth fluorescent block 515, and the first transmitting portion 516 are all disposed in a fan ring shape
  • the third color filter portion 423, The fourth color filter portion 424, the fifth color filter portion 425, and the second transmission portion 426 are all disposed in a fan ring shape.
  • the central angle of the above components is 90 degrees.
  • the central angle of the above components is set according to the brightness requirements for different color fluorescence.
  • the color wheel further includes an anti-reflection film disposed on either or both surfaces of the first transmissive portion.
  • This antireflection film is, for example, the antireflection film 6 shown in Fig. 7 .
  • the color wheel further includes an anti-reflection film disposed on a surface of the second transmissive portion, the anti-reflection film being disposed on either or both surfaces of the second transmissive portion.
  • This antireflection film is, for example, the antireflection film 7 shown in Fig. 7 .
  • the at least one fluorescent block 5 includes a green fluorescent block and a yellow fluorescent block disposed on the first annular portion 3, and the first annular portion 3 includes a first transmitting portion.
  • the second annular portion 4 includes color filter portions 41 respectively corresponding to the green fluorescent block and the yellow fluorescent block.
  • the second annular portion 4 further includes a red color filter portion. It should be noted that when designing the central angles of the fan rings corresponding to the several fluorescent portions and the first transmitting portion, since it is necessary to filter the yellow fluorescent light to obtain yellow light and red light, it is necessary to consider yellow light and The brightness requirement of red light is comprehensively designed.
  • the optical path is maintained in the same vertical plane or horizontal plane.
  • the center line of the fan ring where the filter ring is located and the corresponding fluorescent block is located. Just in line with the center of the circle.
  • the center line of the fan ring in which the third color filter portion 423 is located and the third fluorescent block 513 is just on the same line as the center of the circle, and the fourth color filter portion 424 is located in the fan ring and the fourth portion.
  • the center line of the fan ring where the fluorescent block 514 is located is just in line with the center of the circle.
  • the center line of the fan ring where the second transmission portion 426 is located and the first transmission portion 516 is just in line with the center of the circle.
  • the color wheel in order to increase the fluorescence conversion efficiency, further includes a reflective film disposed on a surface of the first annular portion opposite to a surface on which the at least one fluorescent block 5 is located.
  • the reflective film is, for example, a reflective film 8.
  • a region of the first annular portion corresponding to the at least one fluorescent block 5 capable of reflecting fluorescence is referred to as a reflective fluorescent conversion region.
  • a region of the first annular portion corresponding to the at least one fluorescent block 5 capable of transmitting fluorescence is referred to as a transmissive fluorescent conversion region.
  • FIG. 8 shows a schematic diagram of a laser projection device in some embodiments of the present disclosure.
  • Figure 9 shows a schematic diagram of another laser projection device in some embodiments of the present disclosure.
  • Figure 10 shows a schematic diagram of yet another laser projection device in some embodiments of the present disclosure.
  • the laser projection apparatus includes a color wheel 205 and a laser source 200.
  • the color wheel 205 is described with reference to the above embodiments, and details are not described herein again.
  • the laser source 200 is configured to provide a laser, such as a blue laser, to the color wheel 205.
  • the optical path of the blue laser is marked as a solid line in the figure.
  • the structure of the laser projection apparatus can be simplified, so that the volume of the laser projection apparatus can be reduced.
  • the optical path can be made shorter so that the angle of the fluorescence incident on the color filter is close to 0°. In turn, the loss of fluorescence is also reduced, which indirectly increases the efficiency of the laser projection device.
  • the color wheel 205 includes a motor 53.
  • motor 53 is fixed to color wheel 205 and is configured to drive color wheel 205 to rotate.
  • the laser projection device further includes a light pipe 210.
  • the color wheel 205 includes a reflective fluorescent conversion region within the first annular portion, the laser projection device further including a first dichroic element 203 and a first mirror 209.
  • the first dichroic element 203 is located between the laser source 200 and the color wheel 205, and is configured to transmit the laser light emitted from the laser source 200 to the first annular portion and the fluorescent block reflected from the first annular portion to receive the laser irradiation. Fluorescence. The optical path of the fluorescence is marked as a dashed line in the figure.
  • the first mirror 209 is disposed on the optical path of the fluorescent light reflected by the first dichroic element 203, and is disposed to reflect the fluorescence reflected from the first dichroic element 203 to the second annular portion.
  • the light pipe 210 is disposed on the exiting light path of the fluorescent light passing through the second annular portion and configured to receive and conduct the filtered color of the fluorescent light.
  • the laser projection apparatus further includes a collimating telescope 202 disposed between the color wheel 205 and the laser source 200, the first dichroic element 203 being disposed at the first annular portion and collimating Between the telescopes 202.
  • the color wheel 205 includes a reflective fluorescent conversion region located within the first annular portion and a transmissive portion capable of transmitting laser light within the first annular portion.
  • the laser projection apparatus further includes a second mirror 207 and a second dichroic element 208. The second mirror 207 is disposed on the outgoing light path of the blue laser light passing through the transmissive portion, and is disposed to reflect the transmitted blue laser light to the light guide 210.
  • the second dichroic element 208 is disposed between the second mirror 207 and the light pipe 210, and the other kinds of fluorescence are transmitted through the exiting optical path of the color filter portion in the second annular portion of the color wheel 205, and are configured to be transmitted from the first
  • the blue laser light reflected by the two mirrors 207 and the several kinds of fluorescence reflected from the color filter portion in the second annular portion of the color wheel 205 are transmitted to the light guide 210 in the same direction.
  • the blue laser light transmitting portion when the motor 53 drives the color wheel 205 to rotate, several fluorescent blocks on the first annular portion are excited by the blue laser light to sequentially emit fluorescence of a corresponding color, and when the blue laser light is irradiated to the color wheel 205
  • the blue laser light transmitting portion When the blue light transmitting portion is in the annular portion, the blue laser light is directly transmitted, so that it is necessary to provide the second reflecting mirror 207 on the blue laser emitting light path on the back surface of the color wheel 205, wherein the second reflecting mirror 207 reflects the blue laser light to The light pipe 210; further disposed at a intersection of the blue laser light reflected by the second mirror 207 and the fluorescent light reflected from the first mirror 209, the second dichroic element 208 is disposed.
  • the blue laser light is transmitted while reflecting the fluorescence, and is transmitted to the light pipe 210 in the same direction.
  • the color wheel 205 includes a transmissive fluorescent conversion region located within the first annular portion and a transmissive portion capable of transmitting fluorescence within the first annular portion.
  • the laser projection apparatus includes one or more of a collimating telescope 201, a collimating telescope 202, a diffuser 212, a concentrating mirror 204, a concentrating mirror 206, and a concentrating mirror 211.
  • the blue laser light is sequentially incident on the first annular portion of the color wheel 205 after passing through the collimating telescope 201, the collimating telescope 202, and the collecting mirror 204, and then the blue laser is concentrated by the collecting mirror 206.
  • Light is applied to the condensing mirror 211.
  • the condensing mirror 211 is disposed on the optical path of the blue laser light and the fluorescent light to the light pipe 210 to condense the blue laser light and the fluorescent light to the light pipe 210.
  • the color wheel 205 includes a transmissive fluorescent conversion region located within the first annular portion, that is, the color wheel 205 is excited by blue laser illumination and transmits fluorescence. And the color wheel 205 includes a transmissive portion that is capable of transmitting a blue laser light within the first annular portion.
  • the laser projection apparatus includes a second mirror 207, a third mirror 213, and a fourth mirror 214.
  • the laser projection apparatus may further include one or more of a collimating telescope 201, a collimating telescope 202, a diffusion sheet 212, a condensing mirror 204, a condensing mirror 206, and a condensing mirror 211.
  • the specific structure and principle of the laser projection device are similar to those of the above embodiment, and will not be further described herein.
  • the laser source is a two-color laser source, ie, a laser emitter that emits two different color lasers, such as a blue laser emitter and a red laser emitter.
  • the two-color laser source includes a blue laser emitter and a red laser emitter
  • the light path of the laser emitted by the blue laser emitter may adopt any of the above designs, and the laser emitted from the red laser emitter may enter the second ring along the fluorescent light.
  • the optical path of the portion is incident on the second annular portion on the color wheel, and is irradiated on the red color filter portion in the second annular portion with the rotation of the color wheel, and the red laser light emitted from the red color filter portion can be emitted along with the second annular portion
  • the light path of the other color light enters the light pipe 210.
  • the laser light emitted by the red laser emitter does not pass through the second annular portion, but passes through at least some of the optical components and enters the light pipe 210.
  • the mirror 207 may be disposed away from the light guide in FIG. On one side of the tube, the mirror 207 is replaced by a dichroic element that reflects blue light and transmits red light.
  • the dichroic element 208 is replaced by a dichroic element that transmits red and blue light and reflects green light. Converging into the light pipe.
  • scattering particles are disposed within the second annular portion 4. In some examples, scattering particles are disposed within the first color filter portion 411. In other examples, scattering particles are disposed within the second color filter portion 413, and instead, scattering particles are disposed in both the main body portion 412 and the second color filter portion 413.
  • the laser projection apparatus further includes a light combining portion, an optical switch, a projection lens, and the like.
  • the laser projection apparatus in the embodiment of the present disclosure has been described in detail in the color wheel included in the above, and will not be further described herein.

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Abstract

一种色轮及激光投影设备，包括基板和至少一个荧光块(5)。基板包括第一环形部(3)和第二环形部(4)，至少一个荧光块(5)设置在第一环形部(3)上，荧光块(5)被配置为接受激光照射后发出相应预设波段的荧光，第二环形部(4)包括至少一个滤色部(41)，滤色部(41)配置为对荧光进行滤色，第二环形部(4)的内圆周不小于第一环形部(3)的外圆周，或者第二环形部(4)的外圆周不大于第一环形部(3)的内圆周。

Description

色轮和激光投影设备
本申请要求于2017年9月1日提交中国专利局、申请号为201710778698.3、名称为“色轮、激光投影光源及激光投影设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及一种色轮和激光投影设备。
背景技术
在激光投影显示领域，尤其是超短焦激光投影显示领域，光源系统通常使用蓝色激光和荧光粉实现发光。实现发光的基本工作原理是蓝色激光激发荧光轮上的荧光粉以产生各种基色的荧光。
发明内容
根据一个方面，本公开的一些实施例提供了一种色轮，包括：
基板，包括第一环形部和第二环形部，以及
设置在所述第一环形部上的至少一个荧光块，荧光块被配置为接受激光照射后发出荧光，其中，
所述第二环形部包括至少一个滤色部，所述滤色部配置为对所述荧光进行滤色，且其中，
所述第二环形部的内圆周不小于所述第一环形部的外圆周，或者所述第二环形部的外圆周不大于所述第一环形部的内圆周。
根据另一个方面，本公开的一些实施例提供了一种激光投影设备，包括：
激光发射器，配置为提供激光，和
色轮，包括：
基板，包括第一环形部和第二环形部，和
设置在所述第一环形部上的至少一个荧光块，所述荧光块被配置为接受激光照射后发出荧光，其中
所述第二环形部包括至少一个滤色部，所述滤色部配置 为对所述荧光进行滤色，且其中，
所述第二环形部的内圆周不小于所述第一环形部的外圆周，或者所述第二环形部的外圆周不大于所述第一环形部的内圆周。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，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示出一种激光投影设备的结构示意图。
图2示出本公开一些实施例中一种色轮的结构示意图。
图3示出本公开一些实施例中一种色轮的剖面图。
图4示出本公开一些实施例中另一种色轮的剖面图。
图5示出本公开一些实施例中另一种色轮的结构示意图。
图6示出本公开一些实施例中又一种色轮的结构示意图。
图7示出沿图6的剖线AA’的剖面图。
图8示出本公开一些实施例中激光投影设备的示意图。
图9示出本公开一些实施例中另一种激光投影设备的示意图。
图10示出本公开一些实施例中又一种激光投影设备的示意图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本公开将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施方式中。在下面的描述中，提供许多具体细节从而给出对本公开的实施方式的充分理解。然而，本领域技术人员将意识到，可以实践本公开的技术方案而省略所述特定细节中的一个或更多，或者可以采用其它的方法、组元、装置、步骤等。在其它情况下，不详细示出或描述公知技术方案以避 免喧宾夺主而使得本公开的各方面变得模糊。
本公开中所使用的用语“一个”、“一”、“该”和“所述”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等；用语“第一”和“第二”等仅作为标记使用，不是对其对象的数量限制。
如附图中所示，环形部是基板中的呈环形的一部分，可以具有一定的厚度；扇环形是和圆心相同的任意扇形和环形交叠处的形状相同的形状，同样可以具有一定的厚度。
图1示出了一种激光投影设备的结构的示意图。原始光源为发出蓝色激光的蓝色激光发射器(BLD，Blue Laser Diode)，且该蓝色激光的光路在图1中标记为带箭头的实线。经过荧光轮反射的荧光的光路在图1中标记为带箭头的虚线。该光源包括反射式荧光轮105，准直望远镜元件，二向色元件103、聚光透镜104、聚光透镜106和聚光透镜112，用于反射蓝色激光的反射镜107和反射镜108，二向色元件109，滤色轮111和光导管110。准直望远镜元件包括透镜101和透镜102。反射式荧光轮105在蓝色激光的激发下产生荧光，且可在马达的驱动下旋转。准直望远镜元件用于对入射到荧光轮105上的蓝色激光进行准直。二向色元件103设置在反射式荧光轮105与准直望远镜元件之间，可透射入射到其上的蓝色激光和反射激发的荧光。聚光透镜104和聚光透镜106分别设置于荧光轮正面的入射光路上及背面的出射光路上，用于聚光。聚光透镜112设置于滤色轮111正面入射光路上，用于聚光。反射镜107和反射镜108用于将自反射式荧光轮105透射的蓝色激光反射至二向色元件109。二向色元件109设于自二向色元件103反射的荧光的光路与自蓝光反射镜108反射的蓝色激光光路的交汇处，可以透射荧光并反射蓝色激光。滤色轮111设于蓝色激光及荧光最后出射到光导管110的出射光路上，用于对反射式荧光轮105产生的各种基色的荧光进行滤色。光导管110可以接收并传导蓝色激光或者荧光。
该激光投影设备的基本工作原理是蓝色激光激发反射式荧光轮105上的荧光材料，以产生各种基色的荧光。由于荧光光谱比较宽导致色彩饱和度低，因此会另外设置一滤色轮111，以对荧光轮105产生的各种荧光进行滤色，以便提升色饱和度从而提升色域。
荧光轮105和滤色轮111均需要马达驱动。为了保证颜色的一一对应，即荧光轮105上的每一种荧光转换区刚好对应滤色轮111上对相应荧光进行滤色的滤色区域，使用控制程序和控制电路来保证两个装置的高速同步运转。
本公开一些实施例提供了一种色轮。如图2-图4所示，该色轮包括基板，且该基板包括第一环形部3和第二环形部4，第一环形部3和第二环形部4嵌套设置，在一些实施例中，第一环形部3和第二环形部4同心设置。在一些示例中，第二环形部4的内圆周不小于第一环形部3的外圆周,也即，第二环形部的内径不小于第一环形部的外径，在另一些示例中，第二环形部4的外圆周不大于第一环形部3的内圆周也即，第二环形部的外径不大于第一环形部的内径。该色轮还包括设置在第一环形部3上的至少一个荧光块5，荧光块5被配置为接受激光照射后发出相应预设波段的荧光。第二环形部4包括至少一个滤色部41，该滤色部41配置为对上述荧光进行滤色。在一些实施例中，滤色部41也可以用于对激光器发出的光进行滤色。
通过将荧光块5和滤色部41设置在同一基板上，可保证荧光块5与滤色部41的同步转动。因此，不仅可避免颜色错位搭配的问题，还可避免为保证单独两个装置同步而产生的系统效率下降的问题。在一些实施例中，将荧光块5和滤色部41设置在同一透明材质基板上，可避免将带有铝基板的荧光轮和带有玻璃基板的滤色轮设置在同一驱动轴上通过一个马达驱动的情况，从而了减小体积和重量，使色轮更加轻巧。
在本公开的一些实施例中，荧光块5由涂覆在基板上某一区域内的荧光粉形成。在另一些实施例中，荧光块5由粘接在基板上某一区域内的无机荧光体形成。
在本公开的一些实施例中，如图3所示，滤色部41包括第一滤色部411，第一滤色部411由具有滤色功能的材质构成，也即，第一滤色部是基板的一部分，第一滤色部的材质和基板的第二环形部的除第一滤色部的其他部分的材质不同，第一滤色部的材质可以透射指定波段的光，并吸收指定波长之外的光线。该材质例如为高聚物材质。在一些实施例中，第一滤色部占据了滤色部的一部分，示例性的，第二环形部对应的圆心角为360°，滤色部对应的圆心角为第一圆心角，第一滤色部对应的圆心角为第二圆心角，第二圆心角是第一圆心角内的一部分，且小于第一圆心角。
在另一些实施例中，如图4所示，滤色部41包括主体部412和第二滤色部413，第二滤色部413由具有滤色功能的材质构成。在一些示例中，主体部412由透明材质构成，可以透光，基板为透明基板,主体部是透明基板的一部分，第二滤色部413为涂覆在该主体部上的滤色膜或滤色涂层。采用透明基板并通过在一块基板上镀不同的膜来实现荧光块5和滤色部41的设置，可更容易加工。在一些实施例中，透明基板为玻璃基板。
在本公开的一些实施例中，激光包括蓝色激光，且激光源为蓝色激光发射器BLD。在本公开的另一些实施例中，激光源为发射蓝色激光或紫外光(UV，Ultraviolet)的发光二极管(LED，Light Emitting Diode)，本公开在此不做特殊限定。
在本公开的一些实施例中，如图2所示，第二环形部4的内圆周大于或等于第一环形部3的外圆周，本公开所述的实施例均以此种方式为例。在另一些实施例中，第二环形部4的外圆周小于或等于第一环形部3的内圆周。在一些示例中，在设计包括该种色轮的光源时，考虑到蓝色激光照射荧光块5的位置与荧光照射到滤色部41的位置不同，参考图8和图9中所示的激光投影设备，使蓝色激光与其所照射的荧光块5对应，相应地使荧光与其所照射的滤色部41对应。本公开实施例所提供的色轮的第一环形部3与第二环形部4的位置及大小可以根据光源综合设计，而不限于上述几种实施方式，本公开在此 不做特殊限定。
在本公开的一些实施例中，如图5所示，所述至少一个荧光块5包括至少两个荧光块5。所述至少两个荧光块5发出至少一种荧光，所述至少一个滤色部41包括至少两个滤色部41，所述至少两个滤色部41对所述至少一种荧光进行滤色。例如，如图5所示，所述至少一个荧光块5包括第一荧光块511和第二荧光块512。第一荧光块511配置为接受激光照射后发出绿色荧光，第二荧光块512配置为接受激光照射后发出黄色荧光。所述至少两个滤色部41包括第一滤色部421和第二滤色部422，第一滤色部421配置为对第一荧光块511发出的绿色荧光进行滤色，以获得绿光。第二滤色部422配置为对第二荧光块512发出的黄色荧光进行滤色，以获得黄光、绿光以及红光等不同颜色的光。
在一些实施例中，所述至少两个荧光块5以扇环的形状设置在第一环形部上，且与所述至少两个荧光块5相对应的所述至少两个滤色部41以扇环的形状设置。例如，如图5所示，第一荧光块511和第二荧光块512以扇环的形状设置在第一环形部上，第一滤色部421和第二滤色部422以扇环的形状设置。
在本公开的一些实施例中，如图5所示，第一荧光块511以及第二荧光块512具有相同的圆心角，即每一个荧光块5的圆心角均为180°。相应地，第一滤色部421以及第二滤色部422具有相同的圆心角，即每一个滤色部41的圆心角均为180°。在本公开的另一些实施例中，各个荧光块5和滤色部41不具有相同的圆心角，其圆心角根据对不同颜色荧光的亮度需求设置。
在本公开的一些实施例中，所述至少一个荧光块5包括以圆环形状设置在第一环形部上的荧光块5，所述至少一个滤色部41包括以圆环形状设置的滤色部41。
在本公开的一些实施例中，所述至少一个荧光块5中的每个选自包含绿色荧光块、黄色荧光块或红色荧光块中至少一种的群组。例如，通过滤色部41对从绿色荧光块出射的荧光进行滤色而获得绿光。 通过使用另一滤色部41(即不同位置处的不同颜色的滤色部41)对从黄色荧光块出射的荧光进行滤色而获得黄光、绿光以及红光等不同颜色的光。通过使用再一滤色部41(即不同位置处的不同颜色的滤色部41)对从红色荧光块出射的荧光进行滤色而获得红光。在本公开的另一些实施例中，所述至少一个荧光块5包括受紫色激光激发的荧光块5、受蓝色激光激发的荧光块5等中的至少一个，本公开在此不做特殊限定。
在本公开的一些实施例中，所述至少一个荧光块5只包括一个荧光块5，该荧光块5配置为接受激光照射后发出荧光，所述至少一个滤色部41包括多个滤色部41，所述多个滤色部41对所述荧光进行滤色。例如，至少一个荧光块5只包括设置在第一环形部3上的黄色荧光块，相应地，至少一个滤色部包括多个滤色部41。通过多个滤色部41(即第二环形部4中设置的不同位置处的滤色部)对黄色荧光块受激光照射后发出的荧光进行滤色，从而获得黄光、绿光以及红光等。在一些示例中，荧光块5以圆环形状设置在第一环形部3上。在一些示例中，多个滤色部41包括两个、三个甚至四个滤色部41，这些滤色部41以扇环的形状设置。例如，多个滤色部41具有相同的圆心角。替代地，各个滤色部41的对应的圆心角根据对不同颜色荧光的亮度需求设置。
在本公开的一些实施例中，第一环形部3包括能够透射激光的第一透射部，从而直接提供预定波段的激光作为一种色源。第一透射部为第一环形部3上未设置荧光块5的区域。由于激光源例如为发出蓝色激光的蓝色激光发射器BLD，因此在一些实施例中，将第一透射部称为蓝光透射部。
在本公开的一些实施例中，第二环形部4还包括第二透射部，该第二透射部用于透射或散射经由第一透射部311透射的激光。
例如，如图6所示，第一环形部上设置有第三荧光块513、第四荧光块514和第五荧光块515，且第一环形部包括第一透射部516。第二环形部包括第三滤色部423、第四滤色部424、第五滤色部425 和第二透射部426。第三荧光块513对应于绿色荧光块，其经激光照射后发出荧光，第三滤色部423对该荧光进行滤色获得绿光。第四荧光块514对应于黄色荧光块，其经激光照射后发出荧光，第四滤色部424对该荧光进行滤色后获得黄光。第五荧光块515对应于红色荧光块，其经激光照射后发出荧光，第五滤色部425对该荧光进行滤色后获得红光。第一透射部516使激光透射，第二透射部426为透明部或蓝色滤光部，相应地使该激光透过或对该激光进行滤色。
在一些实施例中，如图6所示，第三荧光块513、第四荧光块514、第五荧光块515和第一透射部516均以扇环形状设置，且第三滤色部423、第四滤色部424、第五滤色部425和第二透射部426均以扇环形状设置。例如，上述部件的圆心角均为90度。但是在实际应用中，根据对不同颜色荧光的亮度需求设置上述部件的圆心角。
在本公开的一些实施例中，色轮还包括设置在第一透射部的任一个或两个表面上的增透膜。该增透膜例如为图7所示的增透膜6。在本公开的一些实施例中，色轮还包括设置在第二透射部的表面上的增透膜，该增透膜设置第二透射部的任一个表面或者两个表面上。该增透膜例如为图7所示的增透膜7。
在本公开的一些实施例中，所述至少一个荧光块5包括设置在第一环形部3上的绿色荧光块和黄色荧光块，且第一环形部3包括第一透射部。相应地，第二环形部4包括分别对应于绿色荧光块和黄色荧光块的滤色部41。此外，为了对黄色荧光滤色而获得红光，在一些实施例中，第二环形部4还包括一红色滤色部。需要注意的是，在对几个荧光部和第一透射部对应的扇环的圆心角进行设计时，由于需要对黄色荧光进行滤色而获得黄光以及红光，所以要考虑对黄光以及红光的亮度需求进行综合设计。
在本公开的一些实施例中，为了便于各光学元件的装配，将光路保持在同一竖直平面或水平面内，此时，滤色部所在扇环与其所对应的荧光块所在扇环的中心线刚好与圆心处于同一条直线上。例如，如图6所示，第三滤色部423所在扇环与第三荧光块513所在扇环的 中心线刚好与圆心处于同一直线上，且第四滤色部424所在扇环与第四荧光块514所在扇环的中心线刚好与圆心处于同一直线上。第二透射部426所在扇环与第一透射部516所在扇环的中心线刚好与圆心处于同一直线上。
在一些实施例中，为了提高荧光转换效率，色轮还包括反射膜，该反射膜设置在第一环形部的、与所述至少一个荧光块5所在的表面相对的表面上。如图7所示，该反射膜例如为反射膜8。
以下将第一环形部的与所述至少一个荧光块5相对应的、能够反射荧光的区域称为反射式荧光转换区。将第一环形部的与所述至少一个荧光块5相对应的、能够透射荧光的区域称为透射式荧光转换区。
图8示出本公开一些实施例中的一种激光投影设备的示意图。图9示出本公开一些实施例中的另一种激光投影设备的示意图。图10示出本公开一些实施例中的再一种激光投影设备的示意图。
本公开一些实施例提供了一种激光投影设备。如图8-图10所示，该激光投影设备包括色轮205和激光源200。色轮205参照以上各实施例所述，此处不再赘述。激光源200配置为向色轮205提供激光，例如蓝色激光。所述蓝色激光的光路为在图中标记为实线。
在设计包括该色轮的激光投影设备时，由于减少了一个滤色轮，因而可简化激光投影设备的结构，从而可减小激光投影设备的体积。此外，可使得光路路程变短，从而使得入射到滤色部上的荧光的角度接近0°。进而使荧光的损失也会减小，间接提升了激光投影设备的效率。
在一些实施例中，如图8-图10所示，色轮205包括马达53。在一些示例中，马达53固定于色轮205上，配置为驱动色轮205旋转。在一些实施例中，激光投影设备还包括光导管210。
在一些实施例中，如图8所示，色轮205包括位于第一环形部内的反射式荧光转换区，该激光投影设备还包括第一二向色元件203和第一反射镜209。第一二向色元件203位于激光源200和色轮205之间，配置为透射自激光源200出射的激光至第一环形部及反射自第 一环形部上的荧光块接收激光照射后发出的荧光。所述荧光的光路在图中标记为虚线。第一反射镜209设于第一二向色元件203反射的荧光的光路上，配置为将自第一二向色元件203反射出的荧光反射至第二环形部。在一些实施例中，如图8所示，光导管210设于荧光经过第二环形部的出射光路上，配置为接收并传导经过滤色后的荧光。
在一些实施例中，如图9所示，激光投影设备还包括设置于色轮205与激光源200之间的准直望远镜202，第一二向色元件203设置在第一环形部与准直望远镜202之间。
在一些实施例中，如图7所示，色轮205包括位于第一环形部内的反射式荧光转换区以及位于第一环形部内的一个能够透射激光的透射部。在一些示例中，激光投影设备还包括第二反射镜207和第二二向色元件208。第二反射镜207设于蓝色激光经过透射部的出射光路上，配置为反射经过透射的蓝色激光至光导管210。第二二向色元件208设于第二反射镜207与光导管210之间，以及其他几种荧光经过色轮205的第二环形部中的滤色部的出射光路上，配置为透射自第二反射镜207反射出的蓝色激光以及反射自色轮205的第二环形部中的滤色部出射的几种荧光，使其沿同一方向传输至光导管210。
在一些实施例中，当马达53带动色轮205旋转时，第一环形部上的几个荧光块受蓝色激光照射激发依次发出对应颜色的荧光，当蓝色激光照射到色轮205的第一环形部中的蓝光透射部时，蓝色激光直接透射，因此需要在色轮205的背面的蓝色激光出射光路上设置第二反射镜207，其中第二反射镜207将蓝色激光反射至光导管210；进一步在经过第二反射镜207反射出的蓝色激光与自第一反射镜209反射出的荧光的交汇处设置第二二向色元件208，该第二二向色元件208用于透射所述蓝色激光同时反射所述荧光，使其沿同一方向传输至光导管210。
需要说明的是，在一些实施例中，色轮205包括位于第一环形部内的透射式荧光转换区以及位于第一环形部内的一个能够透射荧光的透射部。
在一些实施例中，如图9和图10所示，激光投影设备包括准直望远镜201、准直望远镜202、扩散片212、聚光镜204、聚光镜206以及聚光镜211中的一个或多个。在一些实施例中，如图9所示，蓝色激光依次经过准直望远镜201、准直望远镜202和聚光镜204后入射至色轮205的第一环形部，接着，蓝色激光经过聚光镜206聚光至聚光镜211。聚光镜211设置在蓝色激光及荧光至光导管210的光路上，以将该蓝色激光及荧光聚光至光导管210。
在本公开的一些实施例中，如图10所示，色轮205包括位于第一环形部内的透射式荧光转换区，也就是说，色轮205受蓝色激光照射激发并透射荧光。且色轮205包括位于第一环形部内的一个能够透射蓝色激光的透射部。在一些实施例中，该激光投影设备包括第二反射镜207、第三反射镜213、第四反射镜214。此外该激光投影设备还可以包括准直望远镜201、准直望远镜202、扩散片212、聚光镜204、聚光镜206以及聚光镜211中的一个或多个。该激光投影设备具体的结构及原理与上述实施例类似，在此不再一一赘述。
在一些实施例中，所述激光源是双色激光光源，即包括出射两种不同颜色激光的激光发射器，例如一种是蓝色激光发射器，一种是红色激光发射器。在双色激光源包括蓝色激光发射器和红色激光发射器时，蓝色激光发射器发射的激光的光路可以采用上述任一种设计，红色激光发射器出射的激光，可以沿荧光进入第二环形部的光路入射到色轮上的第二环形部，并随色轮的旋转照射在第二环形部中的红色滤色部上，从红色滤色部出射的红色激光可随第二环形部出射的其他颜色光的光路进入导光管210。在另一些实施例中，红色激光发射器发射的激光不通过第二环形部，而是通过至少一些光学元件后进入导光管210，例如可以设置在图9中反射镜207远离所述导光管的一侧，反射镜207替换为反射蓝光透射红光的二向色元件，二向色元件208替换为透射红光和蓝光，反射绿光的二向色元件，即可实现将三种色光汇聚到导光管中。
在一些实施例中，第二环形部4内设置有散射粒子。在一些示 例中，在第一滤色部411内设置散射粒子。在另一些示例中，在第二滤色部413内设置散射粒子，替代地，在主体部412和第二滤色部413内均设置散射粒子。
在一些实施例中，该激光投影设备还包括合光部，光开关，投影透镜等。
本公开实施例中的激光投影设备，其有益效果已在上述其所包括的色轮中进行了详细的描述，在此不再一一赘述。
本领域技术人员在考虑说明书及实践这里公开的内容后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由所附的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限定。

Claims (17)

  1. 一种色轮，包括：
    基板，包括第一环形部和第二环形部，以及
    设置在所述第一环形部上的至少一个荧光块，荧光块被配置为接受激光照射后发出荧光，其中，
    所述第二环形部包括至少一个滤色部，所述滤色部配置为对所述荧光进行滤色，且其中，
    所述第二环形部的内圆周不小于所述第一环形部的外圆周，或者所述第二环形部的外圆周不大于所述第一环形部的内圆周。
  2. 根据权利要求1所述的色轮，其中，所述滤色部包括第一滤色部，所述第一滤色部由具有滤色功能的材质构成。
  3. 根据权利要求1所述的色轮，其中，所述滤色部包括主体部和设置在所述主体部表面的第二滤色部，所述第二滤色部由具有滤色功能的材质构成。
  4. 根据权利要求3所述的色轮，其中，所述基板为透明基板，且所述主体部为透明主体部。
  5. 根据权利要求1所述的色轮，其中，所述至少一个荧光块包括至少两个荧光块，所述至少两个荧光块配置为接受激光照射后发出至少一种荧光，所述至少一个滤色部包括至少两个滤色部，所述至少两个滤色部配置为对所述至少一种荧光进行滤色。
  6. 根据权利要求5所述的色轮，其中，所述至少两个荧光块以扇环的形状设置在所述第一环形部上，且与所述至少两个荧光块相对应的所述至少两个滤色部以扇环的形状设置。
  7. 根据权利要求1所述的色轮，其中，所述至少一个荧光块包括以圆环形状设置在所述第一环形部上的荧光块，所述至少一个滤色部包括以圆环形状设置的滤色部。
  8. 根据权利要求1所述的色轮，其中，所述至少一个荧光块只包括一个荧光块，所述荧光块配置为接受激光照射后发出荧光，所述至少一个滤色部包括多个滤色部，所述多个滤色部配置为对所述荧光进 行滤色。
  9. 根据权利要求1所述的色轮，其中，所述至少一个荧光块中的每个选自包含绿色荧光块、黄色荧光块和红色荧光块中至少一种的群组。
  10. 根据权利要求1所述的色轮，其中，所述第一环形部包括能够透射所述激光的第一透射部。
  11. 根据权利要求10所述的色轮，其中，所述第二环形部还包括第二透射部，所述第二透射部用于透射经由所述第一透射部透射的激光。
  12. 根据权利要求10所述的色轮，包括设置在所述第一透射部的表面上的增透膜。
  13. 根据权利要求1所述的色轮，还包括反射膜，所述基板为透明基板，所述反射膜设置在所述第一环形部的、与所述至少一个荧光块所在的表面相对的表面上。
  14. 一种激光投影设备，包括：
    激光发射器，配置为提供激光，和
    色轮，包括：
    基板，包括第一环形部和第二环形部，和
    设置在所述第一环形部上的至少一个荧光块，所述荧光块被配置为接受激光照射后发出荧光，其中
    所述第二环形部包括至少一个滤色部，所述滤色部配置为对所述荧光进行滤色，且其中，
    所述第二环形部的内圆周不小于所述第一环形部的外圆周，或者所述第二环形部的外圆周不大于所述第一环形部的内圆周。
  15. 根据权利要求14所述的激光投影设备，还包括：
    反射膜，所述反射膜设置在所述第一环形部的、与所述至少一个荧光块所在的表面相对的表面上，其中，所述基板为透明基板；
    第一二向色元件，设于所述激光发射器与所述色轮之间，用于透射所述激光至所述第一环形部以及反射所述荧光；
    第一反射镜，用于将自所述第一二向色元件反射出的所述荧光反射至所述第二环形部。
  16. 根据权利要求15所述的激光投影设备，其中，所述第一环形部包括能够透射所述激光的第一透射部；所述激光投影设备还包括：
    第二反射镜，设于所述激光经过所述第一透射部的出射光路上，配置为反射经过第一透射部的所述激光；
    第二二向色元件，设于所述第二反射镜反射出的所述激光的光路与所述荧光经过所述第二环形部的出射的光路的汇聚处，用于引导被所述二向色镜反射的激光和经第二环形部透射的荧光朝同一个方向传输。
  17. 根据权利要求14所述的激光投影设备，还包括：
    第三反射镜，设于所述激光经过所述第一环形部的荧光出射光路上，用于反射经过所述激光激发的荧光；
    第四反射镜，用于将自所述第三反射镜反射出的所述荧光反射至所述第二环形部。
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