WO2021259274A1 - 光源组件和投影设备 - Google Patents

光源组件和投影设备 Download PDF

Info

Publication number
WO2021259274A1
WO2021259274A1 PCT/CN2021/101573 CN2021101573W WO2021259274A1 WO 2021259274 A1 WO2021259274 A1 WO 2021259274A1 CN 2021101573 W CN2021101573 W CN 2021101573W WO 2021259274 A1 WO2021259274 A1 WO 2021259274A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
laser beam
area
fluorescent
laser
Prior art date
Application number
PCT/CN2021/101573
Other languages
English (en)
French (fr)
Inventor
李巍
顾晓强
田有良
Original Assignee
青岛海信激光显示股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海信激光显示股份有限公司 filed Critical 青岛海信激光显示股份有限公司
Publication of WO2021259274A1 publication Critical patent/WO2021259274A1/zh
Priority to US17/729,489 priority Critical patent/US20230359113A1/en

Links

Images

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
    • G03B21/2006—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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • 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
    • G03B21/2066—Reflectors in illumination beam

Definitions

  • This application relates to the field of optoelectronic technology, and in particular to a light source assembly and projection equipment.
  • Laser excitation of fluorescent materials to emit fluorescence as a projection light source is more and more commonly used in laser projection equipment.
  • the power of the laser can be increased, the fluorescence conversion efficiency cannot be linearly proportional to the power of the excitation light. If the high energy density is too high, it will also cause quenching, resulting in a rapid decline in the fluorescence conversion efficiency, and may also break the fluorescent wheel. Moreover, the high excitation power also causes problems for the heat dissipation of the fluorescent wheel.
  • a fluorescent wheel with a diameter of 92mm If a fluorescent wheel with a diameter of 92mm is used, it can withstand the illumination of a high-power excitation light source, and even can receive excitation from double-sided illumination. The luminous power of the fluorescence conversion will be higher and the heat dissipation will be improved. However, due to the larger size, It is usually not used when pursuing a miniaturized light source architecture.
  • the laser projection light source also includes many optical lenses.
  • the application of lens lenses is very common.
  • the optical performance of optical lenses is related to the material and the effective transmission area of the lens.
  • the material of the optical lens may be plastic instead of glass. If it is irradiated by a high-energy-density beam for a long time, its temperature resistance and stability will be relatively poor.
  • a light source assembly including:
  • the light-emitting component is used to emit the first laser beam and the second laser beam;
  • the fluorescent wheel is provided with a fluorescent area and a reflective area;
  • the first collimating lens group is arranged in the optical path of the first laser beam and the second beam of laser light incident on the fluorescent wheel;
  • the first laser beam and the second laser beam are respectively incident on different positions of the mirror surface of the first collimating lens group, and both are converged by the first collimating lens group and then incident on the fluorescent wheel.
  • the fluorescent area With the rotation of the fluorescent wheel, when the fluorescent area receives the irradiation of the first laser beam and the second laser beam, corresponding to the first laser beam and the second laser beam, the fluorescent area can be excited to produce the first fluorescent light and the second fluorescent light respectively. Both the fluorescent light and the second fluorescent light can be reflected by the fluorescent wheel, transmitted through the first collimating lens group, and then enter the first reflecting part and the second reflecting part respectively;
  • Both the first reflecting part and the second reflecting part are arranged obliquely to the wheel surface of the fluorescent wheel, and the first reflecting part and the second reflecting part are not overlapped with each other and are separated;
  • the reflection area of the fluorescent wheel receives the irradiation of the first laser beam and the second laser beam
  • the first laser beam and the second laser beam can be reflected by the reflection area of the fluorescent wheel, and pass through the first collimating lens group again before being incident To the first reflection part and the second reflection part.
  • a projection device in another aspect, includes: the light source assembly described in the above technical solution, and an optical machine and a lens;
  • the light source assembly is used for emitting an illuminating beam to the optical machine, and the optical machine is used for modulating the illuminating beam emitted by the light source component and projecting it to a lens, and the lens is used for projecting and imaging the light beam modulated by the optical machine.
  • Figure 1-1 is a schematic diagram of the optical path of a light source provided by related technologies
  • Figure 1-2 is a schematic diagram of the optical path of another light source provided by related technologies
  • Figure 2-1 is a schematic diagram of a light path of a light source assembly provided by an embodiment of the present application
  • Fig. 3 is a schematic diagram of a wheel surface of a fluorescent wheel provided by an embodiment of the present application.
  • Figure 4-1 is a schematic diagram of the light path of another light source assembly provided by an embodiment of the present application.
  • 4-2 is a schematic diagram of the optical path of another light source assembly provided by an embodiment of the present application.
  • 4-3 is a schematic diagram of the optical path of still another light source assembly provided by an embodiment of the present application.
  • FIG. 5-1 is a schematic diagram of an optical path of another light source assembly provided by an embodiment of the present application.
  • Fig. 5-2 is a schematic diagram of an optical path of another light source assembly provided by an embodiment of the present application.
  • Fig. 6 is a schematic plan view of a light-combining lens provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a light path of a light-emitting component provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an optical path of a projection device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a projection device provided by an embodiment of the present application.
  • the light source needs to emit at least three primary colors of red, green, and blue light in a sequential manner.
  • the light source assembly at least include an excitation light source, usually a blue laser light source, when using a fluorescent wheel excitation scheme, and,
  • the fluorescent wheel should be provided with fluorescent materials capable of emitting at least two colors.
  • the fluorescent wheel includes a transmission area that allows the laser excitation light source to pass through, if the fluorescent wheel is a transmission type fluorescent wheel, allowing the excited fluorescent light to pass through the fluorescent wheel body, part of the excited light source and the excited fluorescent light will escape from the fluorescent wheel The back of the light source is emitted, so that the structure of the light source is as shown in Figure 1-1.
  • the light source assembly includes: an excitation light source 001a, which emits a laser beam, passes through a beam shaping component (not shown in the figure), and enters the transmissive fluorescent wheel 002a.
  • Straight lens group 003a as the wheel body rotates, when the collimating lens group 003a guides the excitation beam to the fluorescent area of the transmissive fluorescent wheel 002a, it excites the fluorescence conversion material in the fluorescent area to emit light, and the excited fluorescence is transmitted through the fluorescence.
  • the wheel body emerges from the back of the fluorescent wheel 002a and transmits through the collimator lens group 004a, and then enters the light collecting part 005a after being converged; when the collimator lens group 003a directs the excitation light beam to the transmission area of the transmissive fluorescent wheel 002a, it excites The light beam passes through this area, exits from the back of the transmissive fluorescent wheel 002a, and also enters the light collecting part 005a after passing through the collimator lens group 004a.
  • the optical path transmission basically travels in one direction, but this requires that the multiple optical components in the optical path are basically arranged in a linear manner, resulting in a longer length in one direction or one dimension .
  • the fluorescent wheel is a reflective fluorescent wheel
  • the excited fluorescence will be reflected by the fluorescent wheel body and emitted in the direction opposite to the incident direction of the excitation light, and part of it
  • a relay circuit system to return to the front of the fluorescent wheel from the back of the fluorescent wheel to merge with the fluorescent light reflected by the fluorescent wheel again to achieve light combination.
  • this light path architecture At least multiple reflectors should be arranged around the fluorescent wheel in the center, as shown in Figure 1-2.
  • the light source assembly includes: laser light source 001b, dichroic mirror 006, collimating lens group 003b, fluorescent wheel 002b, and relay circuit system, The collimating lens group 004b and the light collecting part 005b.
  • the relay circuit system includes: a first mirror 007, a first lens 008, a second mirror 009, a second lens 010, a third mirror 011, and a third lens 012.
  • the excitation light source 001b can emit blue laser light, and the dichroic mirror 006 can transmit blue light.
  • the blue laser light emitted by the excitation light source 001b can pass through the dichroic mirror 006 and the collimating lens group 003b to be directed toward the fluorescent wheel 002b.
  • the fluorescent wheel 002b includes a fluorescent area and a transmission area (not shown in the figure).
  • the fluorescent area has a fluorescent material that can emit fluorescence (such as red fluorescence and green fluorescence) under the irradiation of blue laser light.
  • the blue laser can be directed to different areas of the fluorescent wheel 002b.
  • the blue laser When the blue laser is directed to the transmission area of the fluorescent wheel 004, the blue laser can pass through the transmission area and the collimating lens group 004b and be directed to the first reflective lens 007, and then be reflected by the first reflective lens 007 to pass through The first lens 008 is directed toward the second reflective lens 009. Then the blue laser light can be reflected by the second mirror 009 to pass through the second collimating lens 010 to the third mirror 011, and be reflected by the third mirror 011 to pass through the third lens 012, and reach two directions
  • the color mirror 006 is transmitted through the dichroic mirror 006 and directed toward the light collecting part 005b.
  • the blue laser can excite the fluorescent material in the fluorescent area to produce fluorescence, and is reflected by the fluorescent wheel to two directions Color mirror 006.
  • the dichroic mirror 006 can reflect red light and green light, so the fluorescence can be reflected on the dichroic mirror 006 again to be directed toward the light-collecting part 005b.
  • the fluorescent wheel does not provide a transmission area for excitation light, but an additional light source is provided to supplement the generation of primary color light other than the color output by the fluorescent wheel, but this will undoubtedly lead to an increase in optical components. Will lead to an increase in the volume of the optical path.
  • the laser projection device may include: a light source assembly, an optical engine and a lens.
  • the light source assembly serves as a light source
  • the optical engine is located on the light output side of the light source assembly
  • the lens is located on the light output side of the optical engine.
  • the light source assembly is used to provide illuminating light beams, which can provide three primary colors in a sequential manner (or add other colors on the basis of the three primary colors), mix the lights to form white light, or output the three primary colors at the same time to continuously emit white light.
  • the optical machine includes the core light modulation component, which is used to modulate the illumination beam emitted by the light source assembly according to the image display signal to form a beam with image information, and converge these beams to the lens.
  • the lens is used to modulate the optical machine.
  • the beam of light is projected and imaged.
  • the light source assembly includes a laser, which can emit laser light of at least one color, such as blue laser light.
  • the light modulation component in the optical machine can be a DMD digital micro-mirror array or an LCD liquid crystal light valve.
  • the lens can be a telephoto lens or a short-focus lens.
  • the laser projection device may be based on the DLP projection architecture, in which the light modulation component is a DMD chip, and the lens may be an ultra-short throw lens, so the laser projection device in this example can be an ultra-short throw laser projection
  • the laser projection device in this example can be an ultra-short throw laser projection
  • the device can realize the projection of larger screens with a smaller projection ratio.
  • Figure 2-1 and Figure 2-2 respectively show a schematic diagram of the optical path transmission of a light source assembly at different times.
  • FIG. 2-1 it is a schematic diagram of a fluorescence excitation light path of a light source assembly provided by an embodiment of the present application.
  • the light source assembly 10 may include:
  • the light-emitting assembly 101 is used to emit a first laser beam S1 and a second laser beam S2;
  • the fluorescent wheel 103 is provided with a fluorescent area and a reflective area (the fluorescent area and the reflective area are not shown in the figure, but are shown in other drawings), and the fluorescent wheel 103 is not provided with a light-transmitting area;
  • the first collimating lens group 105 located on the front of the fluorescent wheel 103, is arranged in the light path of the first laser S1 and the second laser S2 incident on the fluorescent wheel 103, and is used to converge the excitation light beam to form a smaller The excitation light spot.
  • the first laser beam S1 and the second laser beam S2 are respectively incident on different positions of the mirror surface of the first collimating lens group 105, and both are converged by the first collimating lens group 105 and then incident on the fluorescent wheel 103.
  • the fluorescent area and the reflective area will be irradiated by the laser beam alternately.
  • the first laser S1 and the second laser S2 are emitted from the light-emitting assembly at the same time, which can also be regarded as being used for excitation at the same time Fluorescence area.
  • the fluorescent area can be excited to generate the first fluorescent E1 and the second fluorescent E2, respectively, the first fluorescent E1 and the second fluorescent E2 can both be reflected by the fluorescent wheel 103 and transmitted through After the first collimating lens group 105 is incident on the first reflecting portion 1022a and the second reflecting portion 1022b, respectively.
  • the first reflecting portion 1022a and the second reflecting portion 1022b are both arranged obliquely to the wheel surface of the fluorescent wheel 103.
  • the first reflecting portion 1022a and the second reflecting portion 1022b are arranged at the same inclination angle and are parallel to each other,
  • the first reflection portion 1022a and the second reflection portion 1022b do not overlap each other and have an interval between them. The interval is used to allow the laser excitation light to pass through, and the first reflection portion 1022a and the second reflection portion 1022b are not located in the optical path of the first laser S1 and the second laser S2, and will not block the two excitation lights.
  • the first fluorescent light E1 and the second fluorescent light E2 can be regarded as excited and reflected by the fluorescent wheel 103 at the same time, and the beam angle is collimated by the first collimating lens group 105, the first fluorescent light E1 and the second fluorescent light E2 E2 is incident on the reflecting surfaces of the first reflecting part 1022a and the second reflecting part 1022b at almost the same time, and is reflected by the two reflecting parts. In this example, both are reflected toward the light outlet of the light source assembly.
  • the fluorescent wheel 103 includes a fluorescent area 1031 and a reflective area 1032, wherein the fluorescent area 1031 and the reflective area 1032 are enclosed to form a closed loop shape, such as a ring shape; the fluorescent area 1031 and the reflective area 1032 can also be fan-shaped , Which can be enclosed to form a disc shape.
  • the fluorescent wheel does not include light-transmitting areas.
  • At least a green fluorescent material may be provided in the fluorescent area of the fluorescent wheel 103, and the fluorescent material may be fluorescent powder. At least one of a red fluorescent material and a yellow fluorescent material may also be provided in the fluorescent area.
  • the fluorescent material of each color can emit fluorescence of the corresponding color under the excitation of the laser. In a specific implementation, the fluorescence obtained by excitation may also be a laser. In this way, the fluorescent area of the fluorescent wheel 103 can emit green fluorescence, red fluorescence or yellow fluorescence under the action of the light emitted by the light-emitting component.
  • the fluorescent area in the fluorescent wheel 103 in the embodiment of the present application may include at least one sub-fluorescent area, and each sub-fluorescent area may include a fluorescent material of one color.
  • the fluorescent area includes a plurality of sub-fluorescence areas, the plurality of sub-fluorescence areas and the reflection area may be arranged in a circle.
  • the fluorescent region 1031 may include two sub-fluorescent regions G1 and G2.
  • the fluorescent wheel 103 can rotate about the rotation axis Z in the w direction or the opposite direction of the w direction.
  • the two sub-fluorescent regions may include a green fluorescent material and a red fluorescent material, or the two sub-fluorescent regions may include a green fluorescent material and a yellow fluorescent material, or the two sub-fluorescent regions may include a green fluorescent material and an orange fluorescent material, respectively .
  • the area ratios of the fluorescent regions and the reflective regions in FIG. 3 are only examples.
  • the area of each sub-fluorescence area and the reflection area in the fluorescent wheel may also be different, and the area of each sub-fluorescence area and the reflection area of the fluorescent wheel may be designed according to the color of the light emitted by it.
  • the laser light directed to the reflective area of the fluorescent wheel is a blue laser;
  • the sub-fluorescent area G1 includes red fluorescent material, which can emit red light under the excitation of the blue laser;
  • the sub-fluorescent area G2 includes green fluorescent material, which can emit light in the blue The laser emits green light under excitation.
  • the projection device needs to use white light for projection, and further requires that the lights of various colors condensed by the condensing lens can be mixed to obtain the white light.
  • blue light, red light, and green light can be mixed at a ratio of 1:1:1 to obtain white light. Therefore, it is necessary to ensure that the ratio of blue light, red light, and green light emitted by the fluorescent wheel is 1:1:1.
  • the rotation speed of the fluorescent wheel can be kept constant, so that the areas of each sub-fluorescent region and the reflection area of the fluorescent wheel are equal, and the ratio of blue, red and green light emitted by the fluorescent wheel can be achieved. :1:1, thus ensuring that the blue, red and green light directed to the condensing lens are mixed to obtain white light.
  • the area of the reflection area of the fluorescent wheel and the sub-fluorescence area G2 can be equal, and the area is the same as that of the sub-fluorescence area G1.
  • the number of sub-fluorescent regions can also be four, five or other numbers; the colors of the fluorescent light emitted by each sub-fluorescent region can be different, or there can be at least two fluorescent lights emitting the same color. Sub-fluorescent regions, the at least two sub-fluorescent regions may not be adjacent.
  • FIG. 2-1 a schematic diagram of the light path of fluorescence excitation is shown. It should be noted that as the fluorescent wheel rotates, different fluorescent materials will be used in sequence and repetitively according to the rotation sequence. The same as in Figure 2-1 The light path indicates that fluorescence is generated, and the fluorescence of different colors will also be reflected, collimated, and finally reflected by the first reflecting part 1022a and the second reflecting part 1022b with reference to the path shown in FIG. 2-1. The excitation process of other fluorescence will not be repeated here, please refer to the foregoing description.
  • the fluorescent wheel can be prepared in various ways.
  • the fluorescent wheel 103 may have a reflective substrate, and the reflective area of the fluorescent wheel 103 may be a part of the reflective substrate.
  • the fluorescent wheel has a metal substrate, such as an aluminum substrate, and the aluminum substrate has a side facing the light incident. Mirror surface.
  • the fluorescent area of the fluorescent wheel 103 may be located on a reflective substrate, and the surface of the reflective substrate is a light-reflecting surface.
  • a fluorescent material can be coated at a fixed position on the reflective substrate to form the fluorescent area of the fluorescent wheel, and the area of the reflective substrate that is not coated with fluorescent material forms the reflective area of the fluorescent wheel.
  • the reflective substrate may have a circular shape or a ring shape, or may also have other shapes, such as a rectangle or a hexagon.
  • the fluorescent area and the reflective area can be enclosed in a ring shape by designing the coating area of the fluorescent material.
  • the substrate of the fluorescent wheel may not be a reflective substrate.
  • a reflective film layer may be provided on the ceramic substrate.
  • the reflective area of the fluorescent wheel includes a reflective coating.
  • a fluorescent material and a reflective coating can be coated on the ring structure with poor light reflection effect to obtain a fluorescent wheel.
  • the area coated with the fluorescent material forms the fluorescent area of the fluorescent wheel
  • the area coated with the reflective coating forms the reflective area of the fluorescent wheel.
  • the first laser beam S1 and the second laser beam S2 are both emitted by the light-emitting assembly 101, and the first laser beam S1 and the second laser beam S2 are two separate and non-overlapping beams of light. There is an interval between the first laser S1 and the second laser S2, thereby allowing the first laser S1 and the second laser S2 to be incident on different positions of the optical lens in the optical path.
  • the first laser S1 and the second laser S2 emitted by the light-emitting assembly 101 may be two independent beams of light, or the first laser S1 and the second laser S2 may also be two parts of the same light.
  • the embodiment of this application does not limit it.
  • the light-emitting component 101 may not only emit two lights, but also three lights, four lights, or more.
  • the embodiment of the present application does not limit the number of light beams emitted by the light-emitting component.
  • the first laser beam and the second laser beam described in the embodiments of the present application may be any two of the multiple beams of light emitted by the light-emitting assembly.
  • reference may be made to the first laser beam and the second laser beam. The introduction of a laser beam and a second laser beam will not be repeated in the embodiment of the present application.
  • the first laser beam S1 and the second laser beam S2 are respectively incident on different positions of the mirror surface of the first collimating lens group 105 located on the front of the fluorescent wheel 103.
  • the first collimator lens group 105 converges the two beams to the front of the fluorescent wheel 103 to form a smaller excitation spot.
  • the reflection area of the fluorescent wheel 103 receives the irradiation of the first laser S1 and the second laser S2, the first laser S1 and the second laser S2 can be reflected by the reflection area of the fluorescent wheel 103, and then transmit through the first laser again.
  • the collimator lens group 105 is incident on the first reflecting portion 1022a and the second reflecting portion 1022b.
  • the first laser beam S1 and the second laser beam S1 are incident on the connecting line of the mirror position on the first collimating lens group 105 and the converging position on the fluorescent wheel, respectively, and the first collimating lens group The angle formed by the optical axis h of 105 is different.
  • neither the first laser beam S1 nor the second laser beam S2 passes through the optical axis of the first collimator lens group 105, and the two laser beams are not symmetrical about the optical axis h of the first collimator lens group 105 either.
  • the line connecting the position of the first laser beam in the first collimating lens group and the converging position of the first laser beam on the fluorescent wheel is the first line, and the first line is connected to the first collimating lens group.
  • the included angle of the optical axis is the first included angle;
  • the line connecting the position of the second laser beam in the first collimating lens group and the converging position of the second laser beam on the phosphor wheel is the second line.
  • the included angle between the connecting line and the optical axis of the second lens group is the second included angle; the first included angle is different from the second included angle.
  • the first angle formed by the first laser beam S1 and the optical axis h of the first collimator lens group 102 is an angle ⁇
  • the second laser beam S2 and the first collimator lens group 102 The second included angle formed by the optical axis h is the angle ⁇ , ⁇ > ⁇ . It should be noted that when the angles formed by the two are different, the two laser beams can be located on both sides of the optical axis h, or on one side of the optical axis h. In this example, two lasers are distributed on both sides of the optical axis h as an example.
  • the first laser beam and the second laser beam can be incident on the mirror surface of the first collimating lens group at different incident angles, for example, the convex surface of the first lens of the first collimating lens group, but according to the principle of reflection,
  • the reflected light paths of one laser beam and the second laser beam will not overlap, so that the first laser beam and the second laser beam reflected by the reflection area of the fluorescent wheel can respectively enter the first reflecting part 1022a and the second reflecting part 1022a and the second laser beam along different reflection light paths.
  • the reflecting part 1022b is reflected by the above two reflecting parts, for example, it emits toward the light outlet of the light source assembly.
  • the above-mentioned first lens of the first collimating lens group refers to the lens of the first collimating lens group that first receives the incident laser light.
  • one of the first laser beam and the second laser beam can pass through the interval between the first reflecting part and the second reflecting part , And the other transmits from the side of the first reflecting part or the second reflecting part away from the interval, for example, it can be regarded as transmitting from the outside of one of the two reflecting parts.
  • the first reflection part and the second reflection part are spaced so as not to block the laser excitation light beam.
  • FIG. 4-1 shows a schematic diagram of the optical path of another light source assembly provided in the present application.
  • the light source assembly 10 may further include: a second mirror group 106, which is located between the light-emitting assembly 101 and the first reflecting portion 1022a and the second reflecting portion 1022b, and is used to reduce the second mirror group emitted from the light-emitting assembly.
  • the second mirror group 106 can make the beam of the emitted laser lighter than the beam of the incident laser light, so that it is convenient to pass through the lens in the rear optical path.
  • the second lens group 106 may be a telescope lens group, and the second lens group 106 may include a convex lens 1061 and a concave lens 1062.
  • the optical axis of the second lens group 106 and the optical axis of the first collimating lens group 105 may be collinear.
  • the first laser beam and the second laser beam are incident on the second mirror group 106 at different mirror positions, and neither the first laser beam nor the second laser beam passes through the optical axis of the second mirror group.
  • the position of the mirror surface of the first laser beam and the second laser beam incident on the second mirror group 106 may not be symmetrical with respect to the optical axis of the second mirror group 106.
  • the light source assembly 10 may further include: a third lens 107.
  • the first laser beam and the second laser beam pass through the second lens group 105 and pass through the third lens 107 before entering the phosphor wheel 103.
  • the third lens 107 may be a homogenizing lens, such as a diffuser.
  • the third lens 107 may be located between the second lens group 106 and the first reflection portion 1022a and the second reflection portion 1022b.
  • the laser beam emitted by the laser passes through the second lens group 106 to shrink the beam and then exits to the third lens 107.
  • the third lens 107 can homogenize the two different laser beams and then exit.
  • the excitation beam with homogenized energy density has It is beneficial to improve the conversion efficiency of fluorescence excitation.
  • the third lens may also be a fly-eye lens.
  • the projection device in the related art usually produces a speckle effect when performing projection display.
  • Speckle effect means that after two laser beams emitted by a coherent light source are scattered after irradiating a rough object (such as the screen of a projection device), the two laser beams will interfere in space, and finally granular light and dark appear on the screen. The effect of alternate spots.
  • the speckle effect makes the display effect of the projected image poor, and the unfocused spots of light and dark are in a flickering state in the eyes of the human eye, which is prone to dizziness when viewed for a long time, and the user's viewing experience is poor.
  • the laser light emitted by the light-emitting component can be made more uniform under the action of the diffuser or the fly-eye lens, and the interference caused by the use of these lasers for projection is weaker, which can reduce the dispersion of the projection device during projection display.
  • the speckle effect prevents the projected image from becoming blurred, improves the display effect of the projected image, and avoids the dizziness caused by the human eye.
  • FIG. 4-2 shows a schematic diagram of the light path of another light source assembly provided in the present application.
  • the difference from the schematic diagrams of the light source assembly shown in Figure 2-1, Figure 2-2, and Figure 4-1 is that in Figure 4-2, the light-emitting surface of the light-emitting assembly 101 is perpendicular to the wheel surface of the fluorescent wheel 103, instead of parallel.
  • a turning lens 108 is also provided along the direction of the light-emitting surface of the light-emitting assembly 101 for reflecting the light beam emitted by the light-emitting assembly toward the direction of the wheel surface of the fluorescent wheel 103.
  • the light-emitting component 101 may be an MCL-type laser 101, and the light-emitting surface of the laser 101 may be perpendicular to the wheel surface or the light-receiving surface of the fluorescent wheel 103.
  • the light source assembly 10 may further include a plurality of turning lenses 108, which may be arranged along the light output direction of the laser 101, and the plurality of turning lenses 108 are used to reflect the light beams emitted by the laser 10 to form multiple light beams.
  • the distances between the plurality of turning lenses 108 and the light-emitting surface of the laser 101 may all be different.
  • the plurality of turning mirrors 108 may include two reflecting mirrors, and the two reflecting mirrors are respectively used to reflect different parts of the light beam emitted by the laser 101 to form the first laser beam S1 and the second laser beam S1.
  • There is a laser beam S2 There is a laser beam S2, and there is a gap between the first laser beam S1 and the second laser beam S2.
  • the distance between each turning lens and the light exit surface of the laser may include: the distance between any point on the surface of the turning lens close to the laser and the light exit surface.
  • the plurality of turning lenses may satisfy: in any two turning lenses, at least part of the orthographic projection of one turning lens on the light-emitting surface of the laser is located outside the orthographic projection of the other turning lens on the light-emitting surface of the laser;
  • the minimum distance between a point in the lens and the laser may be greater than the maximum distance between a point in the other turning lens and the laser. Therefore, the distance between any point on the surface of each turning lens close to the laser and the laser is different from the distance between all points on the surface of the other turning lens close to the laser and the laser.
  • each surface of the turning lens may be a reflective surface, or only the surface facing the laser 101 in the turning lens may be a reflective surface.
  • the number of turning lenses in the embodiment of the present application can be an integer greater than or equal to 1.
  • Figure 4-2 takes the light source assembly 10 including two turning lenses as an example for illustration. In a specific implementation, the number of turning lenses is also It can be one, three, four or more.
  • the turning lens can be used to adjust the transmission direction of the laser light emitted by the laser.
  • the multiple turning lenses can be used to split the laser beams emitted by the lasers, and the distance between the split lasers can also be adjusted by adjusting the positions of the turning lenses.
  • the laser 101 can emit only one laser beam, and the laser beam can be directed to two turning lenses 108, and each turning lens 108 can reflect the laser beam and directed to the turning lens 108. Part of the laser light, and the two turning mirrors 108 can separate the one laser beam into a first laser S1 and a second laser S2.
  • the larger the distance between the two turning lenses 108 in the x direction (that is, the direction of light emission of the laser 101) in the light source assembly the greater the distance between the two laser beams obtained by splitting the laser light emitted by the laser 101 Bigger. Therefore, the spacing between the laser beams emitted by each of the turning lenses 108 can be adjusted by adjusting the spacing of the turning lenses 108 in the direction of light emission of the laser 101.
  • Fig. 4-3 is another embodiment of the light source assembly provided on the basis of the examples of Fig. 4-1 and Fig. 4-2.
  • the laser 101 can emit two beams of light, and through the turning action of the turning lens 108, two laser beams directed to the second mirror group 106 are formed. Neither the first laser beam nor the second laser beam passes through the optical axis of the second mirror group 6, and after the contraction of the second mirror group 106, the beams of the first laser beam and the second laser beam become thinner, and avoid the first beam.
  • a reflecting portion 1022a and a second reflecting portion 1022b are directed toward the first collimating lens group 105.
  • the optical axes of the first collimator lens group 105 and the second lens group coincide, the first laser beam and the second laser beam after the contraction are irradiated to different positions of the mirror surface of the first collimator lens group, and enter the fluorescent wheel after being converged
  • the same spot position of the fluorescent wheel 103 excites the fluorescent area of the fluorescent wheel 103, or is reflected by the reflective area of the fluorescent wheel 103.
  • first laser beam and the second laser beam reflected by the fluorescent wheel or the first fluorescent light and the second fluorescent light reflected by the fluorescent wheel, they are sequentially directed to the first reflecting part 1022a and the second reflecting part 1022b, And it is reflected by the two reflecting parts toward the light exit direction of the light source assembly to form a sequential illumination light beam.
  • the first laser beam and the second laser beam emitted by the light-emitting assembly are both used as excitation light, and are directed to different positions of the mirror surface of the first collimator lens group to excite the fluorescent wheel to produce Different first fluorescence and second fluorescence.
  • the first laser beam and the second laser beam are both emitted as excitation light, and are incident on the first collimator lens group from different positions, and then incident on the surface of the fluorescent wheel in different directions.
  • the two laser beams are irradiated and excited
  • the fluorescent wheel is excited to produce two beams of fluorescence with different emission directions.
  • the laser beam is a high-energy beam
  • it if it is desired to increase the energy density of a single laser beam to increase the luminous power of the fluorescence, it will not only bring unreliability and higher heat resistance requirements to the optical lens in the optical path, resulting in the cost of the optical path architecture.
  • the high-energy-density light beam will cause heat dissipation problems to the fluorescent wheel, which will reduce the fluorescent conversion efficiency.
  • the laser excitation beam is set to two beams.
  • the two different beams are irradiated to different positions of the lens, which can reduce the long-term exposure of the lens by the high-energy beam.
  • the direction of incident on the fluorescent wheel is also different.
  • the two laser beams are reflected and pass through the collimator lens again After grouping, they are emitted according to the law of reflection, so that the two laser beams are incident on different reflective parts and are reflected by different reflective parts.
  • the two laser beams are irradiated to different positions of the collimating lens group, and then incident on the fluorescent wheel in different directions.
  • the two laser beams excite the fluorescent region to produce two beams Fluorescence, after two beams of fluorescence are reflected by the fluorescent wheel, they are also directed to different reflective parts through the collimating lens group.
  • the reflective component can reflect the two laser beams and the fluorescent beam in the same direction in a time-sharing manner to complete the light combination.
  • the light source assembly can output the laser beam and the fluorescent beam in a sequential manner.
  • the fluorescent wheel is provided with a laser reflection area.
  • the light source assembly in the present application has fewer optical components and a compact optical path structure. , While achieving higher luminous power, it can also take into account the miniaturization of the light source assembly.
  • the light-emitting port direction of the light source assembly 10 may also be provided with a light-collecting component, or a condensing lens and a light-collecting component may be arranged in sequence to complete the first reflection part and the second reflection part.
  • the fluorescence and laser beams reflected by the two reflecting parts in a sequential manner are collected as the output of the light source assembly.
  • the first reflecting part and the second reflecting part are two independently arranged reflecting mirrors
  • the reflecting mirrors are full-wavelength reflecting mirrors, or reflecting mirrors that reflect multiple wavelengths, for example, The red band or yellow band, green band, and blue band required for reflection.
  • the first reflecting portion and the second reflecting portion are respectively the first reflecting area and the second reflecting area provided on a light combining lens.
  • the reflection area has a second transmission area between the second reflection area and the first reflection area, and the second transmission area is used to transmit any one of the first laser beam and the second laser beam.
  • the other of the first laser beam and the second laser beam can pass through the side of the first reflection area or the second reflection area away from the second transmission area.
  • the light combining lens further has a first transmission area for transmitting the other of the first laser beam and the second laser beam, and a second transmission area is provided between the first transmission area and the second transmission area. Reflection area.
  • a schematic diagram of the light path of a light source assembly further includes a light combining lens 102, which is arranged obliquely to the wheel surface of the fluorescent wheel 103 and includes at least one transmission area.
  • the light combining lens 102 corresponds to the first beam
  • the light combining lens 102 includes two transmission areas. The first transmission area is located at the end of the light combining lens 102 away from the fluorescent wheel 103, and the first reflection area is located at the end of the light combining lens 102 close to the fluorescent wheel 103.
  • the second transmission area and the second reflection area are located between the first reflection area and the first transmission area.
  • the laser beam transmitted through the first transmission zone is irradiated on the phosphor wheel, it is either reflected by the rotation of the wheel, or excited by the phosphor wheel to produce fluorescence, and all of them can be reflected by the phosphor wheel and then enter the first
  • the reflection area and the laser beam transmitted through the second transmission area are irradiated on the fluorescent wheel. The same is true for either being reflected or exciting the fluorescent wheel to generate fluorescence. Both can be reflected by the fluorescent wheel and then incident to the second reflection area.
  • the first laser S1 and the second laser S2 respectively transmit through different transmission areas of the light combining lens 102 (such as the first transmission area 1021a and the second transmission area 1021b), and the first The laser beam S1 and the second laser beam S2 are both converged by the first collimator lens group 105 and then incident on the fluorescent wheel 103. That is, the first laser beam S1 and the second laser beam S2 are incident on the first collimating lens group 105 through different transmission areas of the light combining lens 102, and then converged by the first collimating lens group 105 and incident on the fluorescent wheel 103 .
  • the optical lens 102 also includes a plurality of reflection areas (such as a first reflection area 1022a and a second reflection area 1022b).
  • the fluorescence transmitted by the first collimator lens group 105 is incident on different reflection areas of the light combining lens 102.
  • the light combining lens 102 Different reflection areas reflect the fluorescence toward the light exit direction.
  • the first laser beam and the second laser beam are the excitation beams of fluorescence, and the fluorescence emitted by the excitation of the fluorescence region can be called the laser beam.
  • the light exit direction of the light source assembly 10 (the x direction in Figure 2-1) may be perpendicular to the arrangement direction of the light combining lens 102, the first collimating lens group 105 and the fluorescent wheel 103 (that is, y direction).
  • the reflection area of the fluorescent wheel 103 receives the irradiation of the first laser S1 and the second laser S2, the first laser S1 and the second laser S2 are reflected by the reflection area of the fluorescent wheel 103 and are again transmitted through the first collimator After the lens group 105, it is incident on different reflection areas of the light combining lens 102, and the different reflection areas of the light combining lens 102 reflect the first laser beam S1 and the second laser beam S2 toward the light exit direction.
  • the first laser beam S1 is reflected by the reflection area of the fluorescent wheel 103 and again transmitted through the first collimator lens group 105, and then enters the first reflection area 1022a of the light combining lens 102; the second beam The laser light S2 is reflected by the reflection area of the fluorescent wheel 103 and again transmitted through the first collimator lens group 105, and then is incident on the second reflection area 1022b of the light combining lens 102.
  • the transmission area or the reflection area of the light combining lens 102 is arranged at intervals.
  • the transmission area and the reflection area of the light combining lens 102 may be alternately arranged.
  • the transmission area in the light combining lens 102 can transmit the light emitted by the light-emitting component 101 (such as the first laser beam and the second laser beam), and the reflection area in the light combining lens 102 can transmit the incident light (fluorescence, the first laser beam). , The second laser beam) are all reflected to the light outlet of the light source assembly 10.
  • the first collimator lens group 105 may include at least one convex lens, and the convex arc surface of each convex lens faces the light combining lens 102.
  • the illustrations in the foregoing embodiments have taken the first collimator lens group 105 including two convex lenses as an example for illustration.
  • the first collimator lens group 105 may also be a lens group formed by a hyperspherical lens and a plano-convex lens. Or a lens group formed by a meniscus lens.
  • the first collimating lens group 105 may also include one or three convex lenses.
  • the plurality of convex lenses may be arranged in sequence along the arrangement direction of the light combining lens 102 and the fluorescent wheel 103, and the optical axes of the plurality of convex lenses are collinear.
  • the first collimating lens group 105 includes a plurality of convex lenses, which can ensure that the laser light incident on the first collimating lens group is more accurately focused on the fluorescent wheel 103.
  • the fluorescent wheel 103 can be rotated around the rotation axis Z, so that the laser light transmitted from the light combining lens 102 to the fluorescent wheel 103 (for example, includes the first laser beam and the second laser beam) Switch between fluorescent area and reflective area.
  • the fluorescent wheel 103 may be in the shape of a disk, the disk surface of the disk may intersect the first direction, and the rotation axis Z may pass through the center of the ring and be perpendicular to the disk surface of the disk.
  • the fluorescent area of the fluorescent wheel 103 is used to emit fluorescence whose color is different from the color of the laser light under the excitation of the incident laser light; the reflective area of the fluorescent wheel 103 is used to reflect the incident laser light.
  • the fluorescent area can emit fluorescence in various directions under the excitation of the laser.
  • the light-emitting angle of the fluorescent area can be 180 degrees, or other angles within a range of less than 180 degrees.
  • the reflection area of the fluorescent wheel 103 can combine the first laser beam and the second laser beam It is reflected to different reflection areas in the light combining lens 102, and then the different reflection areas in the light combining lens 102 can reflect the first laser beam and the second laser beam to the light exit.
  • the fluorescent area can emit fluorescence under the excitation of the first laser beam and the second laser beam, and the fluorescence It is emitted to the reflection area of the light combining lens 102, and the reflection area of the light combining lens 102 can reflect the fluorescence to the light outlet of the light source assembly.
  • the first laser beam and the second laser beam emitted by the light-emitting assembly 101 respectively pass through the first transmission area 1021a and the second transmission area 1021b of the light combining lens 102, and then radiate toward
  • the situation of the reflection area of the fluorescent wheel 103 illustrates the transmission process of light.
  • the light reflected by the reflection area of the fluorescent wheel 103 can only be directed to the reflection area in the light combining lens 102, for example, the first laser beam is directed to the first reflection area 1022a, and the second laser beam is directed to the second reflection area. 1022b.
  • the fluorescence emitted by the fluorescent area can be directed to the reflection area of the light combining lens 102, or it can be directed to the light combining lens.
  • the transmission area in 102 the light transmission process in this case is not illustrated in the embodiment of the present application.
  • the transmissive area in the light combining lens 102 only needs to ensure that it can transmit the laser light emitted by the light-emitting assembly 101 and reflect the fluorescence emitted by the fluorescent area of the fluorescent wheel, and the reflective area in the light combining lens 102 only needs to be guaranteed It is sufficient to reflect the laser light emitted by the light-emitting component 101 and the fluorescence emitted by the fluorescent area of the fluorescent wheel; as to whether the light with a color different from the laser and the fluorescent light can pass through the transmission area or the reflection area in the light combining lens 102, the present application
  • the embodiment is not limited.
  • the transmissive area in the light combining lens 102 can reflect light with different colors from the laser and fluorescent light
  • the reflective area in the light combining lens 102 can reflect light of all colors.
  • the color of the laser light emitted by the light-emitting component may be blue, that is, the first laser beam and the second laser beam are both blue lasers, and the fluorescent area in the fluorescent wheel is emitted under the excitation of the blue laser.
  • the color of the fluorescence may include at least one of red, green, and yellow.
  • the colors of the laser light emitted by the light-emitting component and the fluorescence emitted by the fluorescent area may also be other colors, which are not limited in the embodiment of the present application.
  • the light-emitting component 101 can emit laser light to the light combining lens 102, and the laser light can pass through the transmission area of the light combining lens 102 to the first collimator lens group 105, and then pass through the first collimator lens.
  • the group 105 is directed to the fluorescent wheel 103.
  • the fluorescent wheel 103 can rotate around its rotation axis Z, and the laser light passing through the light combining lens can be switched between the fluorescent area and the reflective area of the fluorescent wheel 103.
  • the area where the laser light emitted by the light-emitting assembly is directed at the phosphor wheel is referred to as the laser irradiation area.
  • the reflection area of the fluorescent wheel 103 when the reflection area of the fluorescent wheel 103 is located in the irradiation area, that is, when the laser light passing through the light combining lens 102 is directed to the reflection area of the fluorescent wheel 103, the light of the fluorescent wheel 103 The reflection area can reflect the laser light to the reflection area of the light combining lens 102. Then the reflection area of the light combining lens 102 reflects the laser light to the light exit of the light source assembly 10.
  • the fluorescent area of the fluorescent wheel 103 When the fluorescent area of the fluorescent wheel 103 is located in the irradiation area, that is, when the laser light passing through the light combining lens 102 is directed to the fluorescent area, under the excitation of the laser light, the fluorescent area can emit the color and the color of the laser light to the light combining lens 102 Different fluorescence. Then, the reflection area of the light combining lens 102 reflects the fluorescence to the light exit of the light source assembly 10. In this way, the function of the light outlet of the light source assembly 10 to sequentially output laser light and fluorescent light of different colors is realized.
  • Fig. 5-2 shows a schematic diagram of the light path of another light source assembly.
  • the light-emitting assembly 101 in FIG. 5-2 is also provided with a turning lens 108 in the light exit path, and the light source assembly further includes a second lens group 106, and may also include a third lens 107
  • the light source assembly further includes a second lens group 106, and may also include a third lens 107
  • the role of the second lens group 106 and the third lens 107 in the light path please refer to the introduction in Figure 4-1, Figure 4-2, and Figure 4-3. Go into details.
  • first laser beam and the second laser beam pass through the second lens group 106, or after being homogenized by the third lens 107, specifically It is incident on the transmission area of the light combining lens 102, such as the first transmission area and the second transmission area, and is transmitted through the first transmission area and the second transmission area before entering the first collimator lens group 105.
  • the first transmission area 1021a is located at the end of the light combining lens 102 away from the fluorescent wheel 103, and the first reflective area 1022a is located at the end of the light combining lens 102 close to the fluorescent wheel 103.
  • the second transmission area 1021b may be a transmission area through which the laser light transmitted to the reflection area in the fluorescent wheel 103 passes, and the first transmission area 1021a may be a transmission area through which the laser light transmitted to the fluorescent area in the fluorescent wheel 103 passes.
  • the laser 101 can emit laser light to the reflective mirror closer to the laser; the laser light can be reflected on the reflective mirror After passing through the second transmission area 1021b, it is directed to the reflection area of the fluorescent wheel 103, and the reflection area of the fluorescent wheel 103 can reflect the laser light to the second reflection area 1022b.
  • the laser 101 can emit laser light to the reflective lens farther away from the laser; the laser light can be reflected on the reflective lens and pass through the first transmission area 1021a.
  • the fluorescent area can emit fluorescence to the first reflective area 1022a. Since the light path of the fluorescent light from the fluorescent wheel 103 to the first reflective area 1022a is short, the light spot formed by the fluorescent light on the first reflective area 1022a is smaller, and the light beam of the fluorescent light is thinner, and the first reflective area 1022a is easier to reflect all the fluorescent light.
  • the light outlet of the light source assembly To the light outlet of the light source assembly.
  • the light combining lens 102 is introduced with reference to the accompanying drawings:
  • the light combining lens 102 can be arranged obliquely to the traveling direction of the first laser beam and the second laser beam emitted by the light-emitting assembly, that is, there is an angle between the light combining lens 102 and the traveling direction.
  • the traveling direction of the first laser beam and the second laser beam is the arrangement direction of the light combining lens 102, the first collimator lens group 105, and the fluorescent wheel 103 (that is, the y direction in Figure 5-1).
  • the optical lens 102 may be inclined with respect to the y direction.
  • the light combining lens 102 can be inclined toward the light outlet.
  • the light combining lens 102 is inclined at 45 degrees with respect to the wheel surface of the fluorescent wheel 103.
  • the number of transmission areas and reflection areas in the light combining lens 102 may be greater than or equal to the number of light beams emitted by the light-emitting component.
  • the light emitting component 101 emits two beams of light
  • the light combining lens 102 includes two transmission areas and two reflection areas as an example.
  • the number of transmission areas and reflection areas in the light combining lens 102 may also be three, four or more, which is not limited in the embodiment of the present application.
  • the light combining lens may include other areas in addition to the multiple transmission areas and the multiple reflection areas, and no light may be directed to the other areas.
  • the light combining lens 102 includes a first transmission area 1021a, a second transmission area 1021b, a first reflection area 1022a, and The second reflection area 1022b.
  • the transmission area and reflection area of the light combining lens 102 can be alternately arranged along the second direction (the x direction in Figure 5-1), such as the first reflection area 1022a, the second transmission area 1021b, the second reflection area 1022b, and the first reflection area 1022a, the second transmission area 1021b, and the second reflection area 1022b.
  • a transmissive area 1021a may be sequentially arranged along the second direction.
  • the light combining lens 102 is inclined toward the light outlet, for example, 45 degrees. Therefore, the first transmission area 1021a can be located away from the first collimator lens group 105, and the first reflection area 1022a can be located close to the first collimator lens group 105. It should be noted that the light combining lens 102 is inclined at 45 degrees, that is, the angle between the light combining lens 102 and the traveling direction of the laser light emitted by the light-emitting assembly is 45 degrees. The included angle may also be other angles, which is not limited in the embodiment of the present application.
  • each transmission area in the light combining lens 102 can correspond to a reflection area. If the light transmitted from a certain transmission area is reflected in the reflection area of the fluorescent wheel, it can be reflected by the reflection area of the fluorescent wheel. The back shot is directed to the reflection area corresponding to the transmission area in the light combining lens. If the light transmitted from a certain transmission area is incident on the fluorescent area of the fluorescent wheel, the excited fluorescence will be reflected by the fluorescent wheel and at least be directed toward the reflection area corresponding to the transmission area in the light combining lens. For example, please continue to refer to FIG. 6, the first transmission area 1021a in the light combining lens 102 corresponds to the first reflection area 1022a, and the second transmission area 1021b corresponds to the second reflection area 1022b.
  • the area of the first transmission area 1021a in the light combining lens 102 may be smaller than the area of the second transmission area 1021b, and the area of the first reflection area 1022a may be smaller than the area of the second reflection area 1022b.
  • the distance between the first transmission area 1021a and the light-emitting component 101 can be smaller than the distance between the second transmission area 1021b and the light-emitting component 101.
  • the optical path from 101 to the first transmission area 1021a is shorter than the optical path of the laser (such as the second laser S2) from the light-emitting component 101 to the second transmission area 1021b; the distance between the first reflective area 1022a and the fluorescent wheel 103 is shorter than the second
  • the distance between the reflective area 1022b and the fluorescent wheel 103, the optical path of the light (such as the first laser S1 or fluorescence) from the fluorescent wheel 103 to the first reflective area 1022b is shorter than the light (such as the second laser S2 or fluorescent) from the fluorescent
  • the first transmission area 1021a only needs a small area to complete the transmission of the incident laser
  • the first reflection area 1022a only needs a small area to complete the reflection of the incident light
  • the first transmission The area of the area 1021a may be smaller than the area of the second transmission area 1021b
  • the area of the first reflection area 1022a may be smaller than the area of the second reflection area 1022b.
  • the functions of the reflection zone and the transmission zone in the light combining lens 102 can be realized in the following manner.
  • the reflection area of the light combining lens 102 may have a coating.
  • the coating film may be a full-wavelength reflective film, or the coating film is a reflective film for at least one of the red, green, and blue wavelength bands.
  • the coating may be located on the side of the light combining lens 102 close to the first collimator lens group 105, or on the side of the light combining lens 102 away from the first collimator lens group 105, which is not limited in the embodiment of the present application.
  • the light combining lens 102 is close to the first collimator lens group 105, and at least the surface of the transmission area is provided with a dichroic film.
  • the dichroic film can be used to transmit blue light and reflect at least one of red light, yellow light and green light.
  • the fluorescent light emitted from the fluorescent area of the fluorescent wheel toward the light combining lens 102 includes red light.
  • the dichroic film provided on the surface of the transmission area of the light combining lens 102 even if the fluorescent light is directed to the transmission area, it will be The dichroic film is reflected and then directed toward the light outlet of the light source assembly, which improves the utilization rate of fluorescence.
  • the reflective area of the light combining lens 102 can also be directly made of reflective material.
  • the transmissive area in the light combining lens 102 can also be directly prepared from a dichroic material, which is used to transmit blue light and reflect at least one of red light, yellow light, and green light. . At this time, the plating film and the dichroic film can no longer be provided.
  • an antireflection coating is provided on the side of the light combining lens 102 away from the first collimator lens group 105; or, the transmission area of the side of the light combining lens 102 away from the first collimator lens group 105 is provided with Anti-reflection coating.
  • the antireflection coating increases the transmittance for the full spectrum of light, or it may only increase the transmittance for the laser light (such as the blue laser) emitted by the light-emitting component, which is not limited in the embodiment of the present application.
  • the number of turning lenses 108 in the light source assembly can be the same as the number of transmission areas in the light combining lens, and each turning lens in the light source assembly can be combined with the light combining lens.
  • Each transmission area in the lens corresponds to each other one to one.
  • Each turning lens can reflect the incident laser light to the corresponding transmission area.
  • the turning lens near the laser corresponds to the first transmission area 1021a in the light combining lens 102.
  • the turning lens reflects the incident laser light to the first transmission. District 1021a.
  • the turning lens far away from the laser corresponds to the second transmission area 1021b in the light combining lens 102, and the turning lens can reflect the incident laser light to the second transmission area 1021b.
  • the position of the corresponding turning lens can be designed according to the position of each transmission area in the light combining lens, so as to ensure that each turning lens reflects the incident laser light to the corresponding transmission area.
  • the light combining lens includes a plurality of transmission areas and reflection areas
  • the fluorescent wheel includes a fluorescent area and a reflection area
  • the first laser beam and the second laser beam emitted by the light-emitting assembly are used as excitation light, which can be transmitted through
  • the different transmission areas in the combined light lens are all directed toward the first collimator lens group, and then converged by the first collimator lens group and directed toward the fluorescent wheel.
  • the two beams of light are directed to the reflection area of the fluorescent wheel, the two lights are reflected by the reflection area of the fluorescent wheel, and pass through the first collimator lens group again before exiting to different reflection areas of the light combining lens , And then reflected by the different reflection areas to the direction of the light outlet of the light source assembly.
  • the two beams of light excite the fluorescent area to produce fluorescence.
  • the fluorescence is also emitted to the different reflection areas of the light combining lens, and then the different reflection areas reflect the fluorescence to the direction of the light exit. .
  • the light source assembly can realize that the two beams of light emitted by the light-emitting assembly and the fluorescence generated by the excitation of the fluorescent area are all reflected by the fluorescent wheel and then combined by the same light combining lens, and both are combined by the combination.
  • the optical lens is reflected toward the light exit direction of the light source assembly, so that with a compact optical path structure, the combination of the excitation beam and the received laser beam can be realized with less optical lenses, and the volume of the light source assembly is also small.
  • the excitation beam since the laser light will be lost when passing through the dichroic mirror, and in the related art, the excitation beam needs to pass through the dichroic mirror twice when it is directed to the light exit, so the loss of the excitation beam is relatively high. In the embodiment of the present application, the excitation light beam only needs to pass through the light combining lens once to be emitted to the light outlet, so the loss of the excitation light beam is reduced.
  • the wavelength bands of the first laser beam and the second laser beam emitted by the light-emitting assembly 101 may overlap.
  • both the first laser beam and the second laser beam may be blue light.
  • the wavelength band of the first laser beam and the second laser beam may both be 400 nanometers to 450 nanometers; alternatively, the wavelength band of the first laser beam may be 400 nanometers to 430 nanometers, and the wavelength band of the second laser beam may be 420 nanometers to 420 nanometers. 450 nanometers; or the wavelength bands of the first laser beam and the second laser beam may also be other wavelength bands, which are not limited in the embodiment of the present application.
  • the dominant wavelengths of the first laser beam and the second laser beam are different.
  • the first laser beam and the second laser beam may be blue light with different main wavelengths.
  • a beam of light is obtained by the combination of light of multiple wavelengths in a wavelength band. The light that the human eye feels is the result of the combined effect of the light of each wavelength. The human eye feels that the light corresponds to A single wavelength of light, the wavelength is the dominant wavelength of the beam.
  • the first laser beam and the second laser beam in the embodiment of the present application may originate from the same light-emitting component, or the first laser beam and the second laser beam may also be derived from different light-emitting components, which is not limited in the embodiment of the present application .
  • the light-emitting component may be a multi-chip Laser Diode (MCL) type laser.
  • MCL type laser may include multiple light-emitting chips packaged in the same package and arranged in an array. Each light-emitting chip can emit light independently. laser.
  • the first laser beam and the second laser beam are respectively emitted from different light-emitting areas of the laser. For example, the first laser beam and the second laser beam can be respectively emitted by different light-emitting chips in the laser.
  • the light-emitting surface of the laser 101 and the wheel surface or the light-receiving surface of the fluorescent wheel 103 may be parallel to each other.
  • the laser 101, the light combining lens 102 or the first reflecting part 1022a, the second reflecting part 1022b, the first collimator lens group 105 and the fluorescent wheel 103 are arranged in sequence along the light emitting direction of the laser 101.
  • the laser can directly combine the light
  • the transmission area of the lens 102 emits laser light.
  • the laser 101 can emit a laser beam, and the laser beam can be directed to each transmission area of the light combining lens 102.
  • the laser 101 can also emit multiple laser beams, so that each laser beam is directed to a transmission area.
  • the laser can simultaneously emit laser light to multiple reflecting mirrors.
  • the laser may include multiple light-emitting chips, and the multiple light-emitting chips may emit light at the same time, so as to realize that the laser simultaneously emits laser light to multiple reflective mirrors.
  • the laser beam emitted by the laser is thicker and the brightness of the laser is higher.
  • the condensing lens can use higher-brightness light for the projection of the projection device, thereby ensuring that the brightness of the image obtained by the projection by the projection device is higher, and the projection effect of the projection device is better.
  • the laser can emit laser light to different mirrors at different times.
  • the laser includes a plurality of light-emitting chips, and each light-emitting chip corresponds to a reflective mirror, and each light-emitting chip can emit light to the corresponding reflective mirror.
  • the light-emitting chips that emit light in the laser at different times are different, so that the laser can emit laser light to different reflective mirrors at different times.
  • the light beam of the emitted laser is relatively thin.
  • the laser passes through the reflective lens, the transmission area in the light combining lens, the fluorescent wheel and the reflective area in the light combining lens.
  • the beam is also thinner when it hits the condensing lens. In this way, it can be ensured that the laser beam can easily be completely injected into the converging lens, avoiding the waste of laser light, and improving the ease of condensing light by the converging lens.
  • the light-emitting chip in the laser does not need to continuously emit light, so pulsed current can be used to supply power to the light-emitting chip, and the energy of the pulsed current is higher, so the laser light-emitting chip can emit laser with higher brightness.
  • the light-emitting chip in the laser does not need to continuously emit light, which can increase the service life of the light-emitting chip in the laser.
  • the laser can emit laser light to different reflecting mirrors according to the switching timing between the fluorescent area and the reflecting area in the fluorescent wheel, so that the laser light reflected by the different reflecting mirrors passes through the corresponding transmission area and is directed to different areas of the fluorescent wheel (such as Fluorescent area and reflective area).
  • the timing of the laser emitting light to each reflective mirror may also be independent of the timing of switching between the fluorescent area and the reflective area in the fluorescent wheel, which is not limited in the embodiment of the present application.
  • the laser light passing through the transmission area of the light combining lens 102 can pass through the area outside the optical axis h in the first collimator lens group 105, and the first collimator lens group 105 can condense the incident laser light to the fluorescent wheel 103, For example, it converges to the area of the fluorescent wheel 103 that passes through the optical axis of the first collimator lens group 105. It should be noted that when the light enters the first collimator lens group along the optical axis of the first collimator lens group, there will be no change in its optical characteristics.
  • the optical axis of the lens group passes through the first collimator lens group and is directed toward the fluorescent wheel, and the light emitted from the fluorescent wheel will also pass through the first collimator lens group along the optical axis of the first collimator lens group and then be emitted to the transmission Zone, so the laser will not reach the condensing lens. Therefore, the laser light emitted by the light-emitting component in the embodiment of the present application needs to pass through the transmission area and be directed to the area outside the optical axis of the first collimator lens group, and then be directed to the fluorescent wheel.
  • the first laser beam and the second laser beam emitted by the light-emitting assembly can be incident on different mirror positions of the first collimating lens group.
  • the mirror positions of the first laser beam and the second laser beam incident on the first collimator lens group are not symmetrical with respect to the optical axis of the first collimator lens group. In this way, when the first laser beam is condensed to the reflection area of the fluorescent wheel, it is reflected by the reflection area to the transmission area where the second laser beam enters.
  • the first laser beam and the second laser beam are incident on the first collimating lens group on the mirror position and the converging position on the fluorescent wheel.
  • the included angles are different.
  • the line connecting the position of the first laser beam in the first collimating lens group and the converging position of the first laser beam on the fluorescent wheel is the first line, and the first line is connected to the first collimating lens group.
  • the included angle of the optical axis is the first included angle; the line connecting the position of the second laser beam in the first collimating lens group and the converging position of the second laser beam on the phosphor wheel is the second line.
  • the included angle between the connecting line and the optical axis of the second lens group is the second included angle; the first included angle is different from the second included angle.
  • the first angle formed by the first laser beam S1 and the optical axis h of the first collimator lens group 102 is an angle ⁇
  • the second laser beam S2 and the first collimator lens group 102 The second included angle formed by the optical axis h is the angle ⁇ , ⁇ > ⁇ .
  • the first laser beam and the second laser beam can be incident on the mirror surface of the first collimating lens group at different incident angles, for example, the convex surface of the first lens of the first collimating lens group, but according to the principle of reflection, The reflected light paths of one laser beam and the second laser beam will not overlap.
  • the first finger lens refers to the lens in the first collimating lens group close to the light combining lens.
  • the transmission area and the reflection area are respectively located on both sides of the optical axis h of the first collimator lens group 105; the transmission area is located at At least part of the orthographic projection on the fluorescent wheel 103 and at least part of the orthographic projection of the reflection area on the fluorescent wheel 103 are symmetrical about the optical axis h.
  • the orthographic projection of a component on the fluorescent wheel in the embodiments of the present application may refer to the orthographic projection of the component on the disc surface of the fluorescent wheel.
  • the multiple transmission areas may be located on both sides of the optical axis h and are not symmetrical about the optical axis h.
  • the transmission area and the reflection area can be arranged alternately.
  • the second transmission area 1021b and the corresponding second reflection area 1022b are located on both sides of the optical axis h of the first collimator lens group 105, and the first transmission area 1021a and the corresponding first reflection area 1022a are located in the first collimator. Both sides of the optical axis h of the lens group 105.
  • the second transmission area 1021b and the first transmission area 1021a are also located on both sides of the optical axis h of the first collimator lens group 105, and are not symmetrical with respect to the optical axis h. This ensures that the laser beam directed to one transmission area will not pass from the other.
  • a transmission area is emitted.
  • the distance between the first transmission area 1021a and the optical axis h may be greater than the distance between the second transmission area 1021b and the optical axis h, so as to ensure that the laser light passing through the first transmission area 1021a excites the fluorescence emitted by the fluorescent area.
  • the first reflection area 1022a to which the fluorescent light is directed is farther away from the optical axis h than the second reflection area 1022b, ensuring that the light path of the fluorescent light to the first reflection area 1022a is short, and the light spot formed by the fluorescent light in the first reflection area 1022a Smaller.
  • the light combining lens includes a plurality of transmission areas and reflection areas.
  • the fluorescent wheel includes a fluorescent area and a reflection area.
  • the first laser beam and the second laser beam emitted by the light-emitting assembly are used as excitation light, which can pass through the light combining lens.
  • the different transmission areas are all directed to the first collimating lens group, and then converged by the first collimating lens group to be directed to the fluorescent wheel.
  • the two beams of light are directed to the reflection area of the fluorescent wheel, the two lights are reflected by the reflection area of the fluorescent wheel, and pass through the first collimator lens group again before exiting to different reflection areas of the light combining lens , And then reflected by the different reflection areas to the direction of the light outlet of the light source assembly.
  • the two beams of light excite the fluorescent area to produce fluorescence.
  • the fluorescence is also emitted to the different reflection areas of the light combining lens, and then the different reflection areas reflect the fluorescence to the direction of the light exit. .
  • the light source assembly can realize that the two beams of light emitted by the light-emitting assembly and the fluorescence generated by the excitation of the fluorescent area are all reflected by the fluorescent wheel and combined by the same light combining lens, and both are combined by the combined light.
  • the optical lens is reflected toward the light exit direction of the light source assembly, so that the combination of the excitation beam and the received laser beam can be realized with a compact optical path structure and fewer optical lenses, and the volume of the light source assembly is also small.
  • the foregoing embodiments of the present application only take the light source assembly including a light emitting assembly for emitting light of one color as an example for explanation.
  • the light source component may also include a plurality of light-emitting components, and each light-emitting component can emit light of one color.
  • the technical solution of the present application also provides a laser projection device, as shown in a schematic diagram of an ultra-short throw laser projection device as shown in FIG. , Can realize large-scale projection display with a smaller projection ratio.
  • FIG. 8 shows a schematic diagram of a projection light path of a laser projection device. As shown in FIG. 8, the light beam output by the light source assembly 100 enters the optical engine 200, and the optical engine 200 then enters the light beam into the lens 300.
  • the light source assembly 100 also includes a plurality of optical lenses, which combine and converge the laser beam and the fluorescent beam.
  • the light beam emitted from the light source assembly 100 is incident on the optical engine 200, and a homogenization component, such as a light pipe located at the front end of the optical engine 200, is used to receive the illumination beam of the light source, and has the function of light mixing and homogenization, and the exit of the light pipe It is rectangular and has a shaping effect on the light spot.
  • the optical machine 200 also includes a multi-piece lens group.
  • the TIR or RTIR prism is used to form an illuminating light path, and the light beam is incident to the core key component-a light valve.
  • the light valve modulates the light beam and enters the lens group of the lens 300 for imaging.
  • the light valve can include many types, such as LCOS, LCD, or DMD.
  • a DLP (Digital Light Processing) projection architecture is applied, and the light valve is a DMD chip or a digital micro-mirror array.
  • the light valve Before the light beam of the light source 100 reaches the light valve DMD, it will also undergo a reshaping of the illuminating light path of the opto-mechanical so that the illuminating light beam conforms to the illumination size and incident angle required by the DMD.
  • the surface of the DMD includes thousands of tiny mirrors, each of which can be driven individually for deflection. For example, in the DMD chip provided by TI, it can be deflected by plus or minus 12 degrees or plus or minus 17 degrees.
  • the light reflected by a positive deflection angle is called ON light
  • the light reflected by a negative deflection angle is called OFF light.
  • OFF light is invalid light, which is usually hit on the shell or absorbed by a light-absorbing device.
  • the ON light is an effective light beam that is irradiated by the illuminating light beam by the tiny reflector on the surface of the DMD light valve, and enters the lens 300 through a positive deflection angle, and is used for projection imaging.
  • the quality of the illuminating light beam emitted by the light source assembly 100 directly affects the quality of the light beam irradiated on the surface of the light valve DMD, so that the image is projected by the lens 300 and then reflected on the projection screen.
  • the lens 300 is an ultra-short throw projection lens.
  • the light beam modulated by the light valve enters the lens and finally exits in an oblique upward direction. This is different from the traditional telephoto projection where the projection beam optical axis is located in the projection screen.
  • the vertical light emission method, the ultra-short throw projection lens usually has an offset of 120% to 150% relative to the projection screen.
  • This projection method has a smaller projection ratio (it can be understood as the distance between the projection host and the projection screen and the projection The ratio of the diagonal size of the screen), such as about 0.2 or even smaller, can make the projection device and the projection screen closer, which is suitable for home use, but this light emission method also determines the beam has a higher uniformity, otherwise Compared with the traditional telephoto projection, the brightness or chromaticity unevenness of the projection screen will be more obvious.
  • the light source 100 can output three primary colors in a sequential manner. According to the principle of three-color light mixing, the human eye cannot distinguish the color of light at a certain moment, and what it perceives is still mixed. White light.
  • the three-color primary color light in the light source 100 can be lighted and output white light at the same time.
  • the projection device uses the light source components in the above-mentioned multiple embodiments, and the blue light circuit is eliminated from the above light source components, and the output of at least three colors of light is realized with fewer optical lenses and a compact optical structure.
  • the other structure may include a heat dissipation structure or a circuit board.
  • a and/or B can mean: A alone exists, and both A and B exist at the same time. There are three cases of B.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • the term "at least one of A and B” in this application is merely an association relationship describing the associated objects, indicating that there can be three types of relationships. There are three cases of A and B, and B alone.
  • A, B and C means that there can be seven relationships, which can mean: A alone, B alone, C alone, A and B exist at the same time, A and C exist at the same time, and C and C exist at the same time. B, there are seven situations of A, B, and C at the same time.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.
  • plurality refers to two or more, unless expressly defined otherwise.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

一种光源组件（10），包括发光组件（101）、第一准直镜组（105）、荧光轮（103）、第一反射部（1022a）和第二反射部（1022b）。发光组件（101）发出第一束激光（S1）和第二束激光（S2）。第一束激光（S1）和第二束激光（S2）分别入射至第一准直镜组（105）镜面的不同位置，并经会聚后入射至荧光轮（103）。第一束激光（S1）和第二束激光（S2）能够激发荧光轮（103）的荧光区（1031）以分别产生第一荧光（E1）和第二荧光（E2）。第一荧光（E1）和第二荧光（E2）被荧光轮（103）反射后分别入射至第一反射部（1022a）和第二反射部（1022b）。第一束激光（S1）和第二束激光（S2）被荧光轮（103）反射区（1032）反射后入射至第一反射部（1022a）和第二反射部（1022b），从而实现激光和荧光的合光输出。还涉及包含该光源组件（10）的投影设备。该光源组件（10）光学架构紧凑，发光功率较高。

Description

光源组件和投影设备
相关申请的交叉引用
本申请要求在2020年6月22日提交中国专利局、申请号为202010576383.2，发明名称为“光源组件和投影设备”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
本申请涉及光电技术领域，特别涉及一种光源组件和投影设备。
背景技术
激光激发荧光材料发出荧光作为投影光源，被越来越普遍的应用到激光投影设备中。虽然激光的功率可以提升，但是荧光转换效率并不能与激发光的功率成线性正比关系，如果高能量密度过高，还会引发淬灭，导致荧光转换效率迅速下降，还可能击穿荧光轮，以及，高激发功率也给荧光轮散热带来问题。
如果使用比如92mm直径的荧光轮，则可以承受大功率激发光源的照射，甚至可以接收双面照射激发，荧光转换的发光功率也会较高，散热也会得到改善，但由于尺寸较大，对于追求小型化的光源架构时通常不会采用。
以及，激光投影光源中还包括很多光学镜片，比如透镜镜片的应用非常普遍，光学镜片的光学性能与材质有关，也与镜片的有效透过区域有关。在产品设计中，如果追求低成本方案时，光学镜片的材质选择可能为塑胶，而不是用玻璃，如果长期接收高能量密度光束的照射，则其耐温性能和稳定性就相对变差。
而随着激光投影设备的推广应用，出现了对设备小型化的需求，这样就需要在光源产品设计时在实现基本照明光束的同时，还要兼顾到体积，成本，光学效率等多个方面。
发明内容
本申请实施例一方面提供了一种光源组件，所采用的技术方案如下：
一种光源组件，包括：
发光组件，用于发出第一束激光和第二束激光；
荧光轮，设置有荧光区和反射区；
第一准直镜组，设置于第一束激光和第二束激光入射荧光轮的光路径中；
第一束激光和第二束激光分别入射至第一准直镜组镜面的不同位置，并均通过第一准直镜组会聚后入射至荧光轮，
随荧光轮旋转，当荧光区接收第一束激光和第二束激光的照射时，对应第一束激光和第二束激光，荧光区能够受激分别产生第一荧光和第二荧光，第一荧光和第二荧光可均被荧光轮反射，并透射通过第一准直镜组后分别入射第一反射部和第二反射部；
第一反射部和第二反射部均倾斜于荧光轮的轮面设置，且第一反射部和第二反射部互不重 叠且具有间隔；
当荧光轮的反射区接收第一束激光和第二束激光的照射时，第一束激光和第二束激光可被荧光轮的反射区反射，并再次透射通过第一准直镜组后入射至第一反射部和第二反射部。
另一方面，提供了一种投影设备，所述投影设备包括：上述技术方案所述的光源组件，以及光机和镜头；
光源组件用于向光机发出照明光束，光机用于将光源组件发出的照明光束进行调制，并投射至镜头，所述镜头用于将经光机调制的光光束进行投射成像。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例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申请的一些实施例，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1-1是相关技术提供的一种光源的光路示意图；
图1-2是相关技术提供的另一光源的光路示意图；
图2-1是本申请实施例提供的光源组件的一种光路示意图；
图2-2是本申请实施例提供的光源组件的另一光路示意图；
图3是本申请实施例提供的一种荧光轮的轮面示意图；
图4-1是本申请实施例提供的另一种光源组件的光路示意图；
图4-2是本申请实施例提供的又一种光源组件的光路示意图；
图4-3是本申请实施例提供的再一种光源组件的光路示意图；
图5-1是本申请实施例提供的又一种光源组件的光路示意图；
图5-2是本申请实施例提供的又一种光源组件的光路示意图；
图6是本申请实施例提供的一种合光镜片的平面示意图；
图7是本申请实施例提供的一种发光组件的光路示意图；
图8是本申请实施例提供的一种投影设备的光路示意图；
图9是本申请实施例提供的一种投影设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
相关技术中，光源需要时序性的出射至少红、绿、蓝三基色光，这就要求光源组件在采用荧光轮的激发方案时，至少还要包括激发光源，通常是蓝色激光光源，以及，荧光轮上要设置至少能够发出两种颜色的荧光材料。当荧光轮包括允许激光激发光源透过的透射区时，如果荧光轮为透射式荧光轮，允许受激产生的荧光透射通过荧光轮本体，则部分激发光源和受激产生的荧光会从荧光轮的背面出射，从而使得光源的架构如图1-1所示意， 光源组件包括：激发光源001a，发出激光光束，经过光束整形部件(图中未示出)，入射透射式荧光轮002a正面的准直镜组003a，随着轮体的旋转，当准直镜组003a将激发光束导向透射式荧光轮002a的荧光区时，并激发荧光区的荧光转换材料发光，受激产生的荧光透射通过荧光轮本体，从荧光轮002a的背面出射，并透射通过准直镜组004a，进行会聚后进入集光部件005a；当准直镜组003a将激发光束导向透射式荧光轮002a的透射区时，激发光束透过该区域，从透射式荧光轮002a的背面出射，同样也通过准直镜组004a后进入集光部件005a。图1-1中所示的光路架构中，光路传输基本沿着一个方向行进，但是这要求光路中的多个光学组件基本呈线型排列，从而导致在一个方向或一个维度上的长度较长。
以及，作为相关技术中另一种较为常用的技术，如果荧光轮为反射式荧光轮，则受激产生的荧光会被荧光轮本体反射，沿着与激发光入射方向相反的方向射出，而部分激发光从荧光轮透射区透射后则要借助中继回路系统从荧光轮的背面再次回到荧光轮的正面，才能与被荧光轮反射的荧光再次汇合，进而实现合光，那么这种光路架构中会围绕荧光轮要设置至少多个反射镜，如图1-2所示，光源组件包括：激光光源001b、二向色镜006、准直透镜组003b、荧光轮002b、中继回路系统，准直镜组004b以及集光部件005b。其中中继回路系统包括：第一反射镜片007、第一透镜008、第二反射镜片009、第二透镜010、第三反射镜片011和第三透镜012。
激发光源001b可以发出蓝色激光，二向色镜006可以透过蓝光。激发光源001b发出的蓝色激光可以穿过二向色镜006和准直透镜组003b射向荧光轮002b。该荧光轮002b包括荧光区和透射区(图中未示出)，该荧光区具有荧光材料，该荧光材料可以在蓝色激光的照射下发出荧光(如红色荧光和绿色荧光)。荧光轮002b在转动时蓝色激光可以射向该荧光轮002b的不同区域。当该蓝色激光射向荧光轮004的透射区时，该蓝色激光可以穿过该透射区以及准直透镜组004b射向第一反射镜片007，进而被第一反射镜片007反射以穿过第一透镜008射向第二反射镜片009。接着该蓝色激光可以被第二反射镜片009反射以穿过第二准直透镜010射向第三反射镜片011，且被第三反射镜片011反射以穿过第三透镜012，并达到二向色镜006，经二向色镜006透射射向集光部件005b。随着荧光轮004的转动，当激光器001发出的蓝色激光射向荧光轮004的荧光区时，该蓝色激光可以激发该荧光区的荧光材料产生荧光，并被荧光轮反射射向二向色镜006。二向色镜006可以反射红光和绿光，故该荧光可以在二向色镜006上再次反射以射向集光部件005b。参见上述附图示意可知，由于至少蓝光中继回路的设置，不仅光学系统中镜片的数量较多，且需要占据一定的空间设置，这导致相关技术中该光源组件的体积较大。
以及，还存在相关技术，荧光轮不设置激发光的透射区，而是另外设置补充光源，来补充产生荧光轮所输出的颜色之外的基色光，但这无疑会导致光学部件的增加，也会导致光路体积的增大。
本申请技术方案所涉及的光源组件应用于激光投影设备中。在本申请示例中，激光投影设备可包括：光源组件，光机和镜头，其中，光源组件作为发光源，光机位于光源组件 的出光侧，镜头位于光机的出光侧。光源组件用于提供照明光束，可以时序性的提供三基色光(也可以在三基色光基础上增加其他色光)，混光形成白光，也可以是同时输出三基色光，持续发出白光。
光机中包括核心的光调制部件，用于根据图像显示信号对光源组件发出的照明光束进行调制，形成带有图像信息的光束，并将这些光束汇聚至镜头，镜头用于将光机调制后的光束进行投射成像。其中，光源组件中包括激光器，可发出至少一种颜色的激光，比如蓝色激光。光机中光调制部件可以是DMD数字微镜阵列，也可以是LCD液晶光阀。镜头可以是长焦镜头，也可以是短焦镜头。
在本申请示例中，以光源组件时序性输出基色光为例进行下面示例的说明。
以及，在本申请示例中，激光投影设备可以基于DLP投影架构，其中光调制部件为DMD芯片，以及，镜头可以为超短焦镜头，这样本示例中的激光投影设备可以是超短焦激光投影设备，可以较小的投射比实现较大尺寸画面的投射。
具体地，下面将先介绍光源组件的各种实施例。
图2-1，图2-2分别示出了一种光源组件不同时刻的光路传输示意图。
如图2-1所示，是本申请实施例提供的一种光源组件的荧光激发光路示意图。如图所示，该光源组件10可以包括：
发光组件101，用于发出第一束激光S1和第二束激光S2；
荧光轮103，设置有荧光区和反射区(图中未示出该荧光区和反射区，在其他附图中示出)，且荧光轮103不设置有透光区；
第一准直镜组105，位于荧光轮103的正面，设置于第一束激光S1和第二束激光S2入射荧光轮103的光路径中，用于对激发光光束进行会聚，来形成较小的激发光光斑。
其中，第一束激光S1和第二束激光S2分别入射至第一准直镜组105镜面的不同位置，并均通过第一准直镜组105会聚后入射至荧光轮103。
随荧光轮103旋转，荧光区和反射区会交替接受激光光束的照射。
当荧光区接收第一束激光S1和第二束激光S2的照射时，在本示例中，第一束激光S1和第二束激光S2同时从发光组件中出射，也可视为同时用于激发荧光区。
对应第一束激光S1和第二束激光S2，荧光区能够受激分别产生第一荧光E1和第二荧光E2，第一荧光E1和第二荧光E2可均被荧光轮103反射，并透射通过第一准直镜组105后分别入射第一反射部1022a和第二反射部1022b。
其中，第一反射部1022a和第二反射部1022b均倾斜于荧光轮103的轮面设置，在具体实施中，第一反射部1022a和第二反射部1022b沿相同的倾斜角度设置，互相平行，且第一反射部1022a和第二反射部1022b互不重叠且两者具有间隔。该间隔用于允许激光激发光通过，第一反射部1022a和第二反射部1022b均不位于第一束激光S1和第二束激光S2的光路中，不会对上述两束激发光形成阻挡。
由于第一荧光E1和第二荧光E2几乎可视为同时被激发且被荧光轮103反射，以及被第一准直镜组105进行光束角度的准直，因此，第一荧光E1和第二荧光E2几乎是同时分 别入射至第一反射部1022a和第二反射部1022b的反射面，并被这两个反射部件反射出去，在本示例中，均朝向光源组件的出光口方向反射。
参见图3，示例性的给出了一种荧光轮轮面的结构示意图。如图所示，荧光轮103包括荧光区1031和反射区1032，其中荧光区1031和反射区1032围合形成闭环形状，比如可以围合成环状；荧光区1031和反射区1032也可以均为扇形，从而可以围合形成圆盘状。在本示例中，荧光轮不包括透光区。
荧光轮103的荧光区中可以至少设置有绿色荧光材料，该荧光材料可以为荧光粉。该荧光区中也可以设置有红色荧光材料和黄色荧光材料中的至少一种。每种颜色的荧光材料可以在激光的激发下发出对应颜色的荧光。在一具体实施中，激发得到的该荧光也可以为一种激光。如此，荧光轮103的荧光区可以在发光组件发出的光的作用下发出绿色荧光、红色荧光或黄色荧光。
示例地，本申请实施例中荧光轮103中的荧光区可以包括至少一个子荧光区，每个子荧光区可以包括一种颜色的荧光材料。当该荧光区包括多个子荧光区时，该多个子荧光区与反射区可以呈圆周排布。如图3所示，该荧光区1031可以包括两个子荧光区G1和G2。该荧光轮103可以绕转轴Z沿w方向或w方向的反方向转动。该两个子荧光区可以分别包括绿色荧光材料和红色荧光材料，或者该两个子荧光区可以分别包括绿色荧光材料和黄色荧光材料，或者该两个子荧光区可以分别包括绿色荧光材料和桔色荧光材料。
需要说明的是，图3中的各荧光区和反射区的面积比例仅作为示例。在一具体实施中，荧光轮中各个子荧光区和反射区的面积也可以不同，各个子荧光区和荧光轮的反射区的面积可以根据其射出的光线的颜色进行设计。假设，射向荧光轮的反射区的激光为蓝色激光；子荧光区G1包括红色荧光材料，能够在蓝色激光的激发下发出红光；子荧光区G2包括绿色荧光材料，能够在蓝色激光的激发下发出绿光。投影设备需要采用白光进行投射，进而需要会聚透镜会聚的各种颜色的光能够混合得到白光。示例地，蓝光、红光和绿光以1:1:1的比例混合后可以得到白光，故需要保证由荧光轮射出的蓝光、红光和绿光的比例为1:1:1。本申请实施例中可以使荧光轮的转速保持不变，使各个子荧光区和荧光轮的反射区的面积均相等，即可实现由荧光轮射出的蓝光、红光和绿光的比例为1:1:1，进而保证射向会聚透镜的蓝光、红光和绿光混合后得到白光。又示例地，若蓝光、红光和绿光以1:2:1的比例混合后可以得到白光，则荧光轮的反射区和子荧光区G2的面积可以相等，且该面积为子荧光区G1的面积的一半。在一具体实施中，子荧光区的个数也可以为四个、五个或者其他个数；各个子荧光区射出的荧光的颜色可以均不同，或者也可以存在射出相同颜色的荧光的至少两个子荧光区，该至少两个子荧光区可以不相邻。
结合图2-1，示出了一种荧光激发的光路示意图，需要说明的是，随着荧光轮的转动，不同的荧光材料会根据转动时序依次且重复性的采用与图2-1相同的光路示意产生荧光，以及不同颜色的荧光也会参照图2-1中示意的路径被反射，准直，并最终被第一反射部1022a，第二反射部1022b反射。在此不再赘述其他荧光的激发过程，可参见前述说明。
以及，本申请实施例中，可以通过多种方式实现制备荧光轮。
在一种可选方式中，荧光轮103可以具有反射基板，荧光轮103的反射区可以为该反射基板的一部分，比如，荧光轮具有金属基板，比如铝基板，铝基板朝向光入射的一面具有镜面。荧光轮103的荧光区可以位于反射基板上，该反射基板的表面为反光面。如可以在反射基板上的固定位置涂覆荧光材料，以形成荧光轮的荧光区，反射基板中未涂覆荧光材料的区域形成荧光轮的反射区。在一具体实施中，该反射基板可以呈圆形或者也可以呈环状，或者也可以呈其他形状，如矩形或六边形等。当反射基板呈其他形状时，可以通过设计荧光材料的涂覆区域，使荧光区与反射区围成环状。
在另一种可选方式中，荧光轮的基板也可以不为反射基板，如该基板为陶瓷基板，陶瓷基板上可以设置反射膜层，比如，荧光轮的反射区包括反射涂层。例如，可以在反光效果较差的环状结构上涂覆荧光材料和反射涂层，以得到荧光轮。其中，涂覆荧光材料的区域形成荧光轮的荧光区，涂覆反射涂层的区域形成荧光轮的反射区。
下面结合图2-2来介绍光源组件中激光光束的光路示意路径。如图2-2所示，第一束激光S1和第二束激光S2均由发光组件101发出，且第一束激光S1和第二激光S2为分离不重叠的两束光，在具体实施中，第一束激光S1和第二束激光S2之间具有间隔，从而允许第一束激光S1和第二束激光S2可以入射至光路径中光学镜片的不同位置。
以及，发光组件101发出的第一束激光S1和第二束激光S2可以为独立的两束光，或者该第一束激光S1和第二束激光S2也可以为一束光中的两部分光，本申请实施例不做限定。在一具体实施中，发光组件101可以不仅发出两束光，也可以发出三束光、四束光甚至更多，本申请实施例对发光组件发出的光束的个数不做限定。本申请实施例中所述的第一束激光和第二束激光可以为发光组件发出的多束光中的任意两束光，对于发光组件发出其他个数束光的情况均可以参考对该第一束激光和第二束激光的介绍，本申请实施例不再赘述。
如图2-2所示，第一束激光S1和第二束激光S2分别入射至位于荧光轮103正面的第一准直镜组105镜面的不同位置。第一准直镜组105将这两束光束均进行会聚至荧光轮103的正面，形成一个较小的激发光斑。
当荧光轮103的反射区接收第一束激光S1和第二束激光S2的照射时，第一束激光S1和第二束激光S2可被荧光轮103的反射区反射，并再次透射通过第一准直镜组105后入射至第一反射部1022a和第二反射部1022b。
在一具体实施中，第一束激光S1和第二束激光S1入射至第一准直镜组105上的镜面位置与在荧光轮上的会聚位置各自的连线，与第一准直镜组105的光轴h所成的夹角不同。
以及，第一束激光S1和第二束激光S2均不通过第一准直镜组105的光轴，且两束激光也不关于第一准直镜组105的光轴h对称。
如第一准直镜组中第一束激光射向的位置与第一束激光在荧光轮上的会聚位置的连线为第一连线，该第一连线与第一准直镜组的光轴的夹角为第一夹角；第一准直镜组中第二束激光射向的位置与第二束激光在荧光轮上的会聚位置的连线为第二连线，该第二连线与第二镜组的光轴的夹角为第二夹角；该第一夹角不同于第二夹角。示例地，请继续参考 2-2，第一束激光S1与第一准直镜组102的光轴h形成的第一夹角为角α，第二束激光S2与第一准直镜组102的光轴h形成的第二夹角为角β，α＞β。需要说明的是，当两者形成的夹角不同时，两束激光光束可以位于光轴h的两侧，也可以位于光轴h的一侧。在本示例中，以两束激光分布于光轴h的两侧为例进行示例。
这样，第一束激光与第二束激光可以以不同的入射角度入射至第一准直镜组的镜面，比如，第一准直镜组的第一片透镜的凸面，但根据反射原理，第一束激光和第二束激光各自的反射光路将不会重叠，从而被荧光轮反射区反射的第一束激光和第二束激光可以沿不同的反射光路分别入射第一反射部1022a和第二反射部1022b，并被上述两个反射部件反射，比如朝向光源组件的出光口方向出射。
上述第一准直镜组的第一片透镜是指第一准直镜组中先接受激光入射的透镜。
以及，为了实现上述图2-1和图2-2所示的激发光路，第一束激光和第二束激光两者之一可从第一反射部和第二反射部之间的间隔透过，而另一从第一反射部或第二反射部远离该间隔的一侧透过，比如可以视为从这两个反射部中某一个反射部的外侧透过。这样，第一反射部和第二反射部通过设置间隔，不会对激光激发光光束造成阻挡。
以及，在上述实施例基础上，图4-1示出了本申请提供的又一种光源组件的光路示意图。如图4-1所示，该光源组件10还可以包括：第二镜组106，位于发光组件101和第一反射部1022a、第二反射部1022b之间，用于缩小从发光组件发出的第一束激光和第二束激光的光斑。该第二镜组106可以使射出的激光的光束相比射入的激光的光束更细，便于通过后面光路中镜片。
在一具体实施中，该第二镜组106可以为望远镜镜组，该第二镜组106可以包括一个凸透镜1061和一个凹透镜1062。在一具体实施中，第二镜组106的光轴与第一准直镜组105的光轴可以共线。
在一具体实施中，第一束激光和第二束激光入射至第二镜组106的镜面位置不同，且第一束激光、第二束激光均不通过第二镜组的光轴。
在一具体实施中，第一束激光和第二束激光入射至第二镜组106的镜面位置可以不关于第二镜组106的光轴对称。
请继续参考图4-1，本申请实施例中光源组件10还可以包括：第三镜片107。第一束激光和第二束激光透射通过第二镜组105且入射荧光轮103之前还经过第三镜片107，该第三镜片107可以为匀光镜片，比如可以为扩散片。该第三镜片107可以位于第二镜组106与第一反射部1022a、第二反射部1022b之间。激光器发出的激光通过第二镜组106进行光束缩束后向第三镜片107出射，第三镜片107可以对射入的两束不同的激光进行匀化后出射，能量密度匀化的激发光束有利于提高荧光激发的转换效率。
在一具体实施中，第三镜片也可以是复眼透镜。
需要说明的是，相关技术中投影设备进行投影显示时通常会产生散斑效应。散斑效应指的是相干光源发出的两束激光在照射粗糙的物体(如投影设备的屏幕)发生散射后，该 两束激光就会在空间中产生干涉，最终在屏幕上出现颗粒状的明暗相间的斑点的效应。散斑效应使得投影图像的显示效果较差，且明暗相间的这些未聚焦的斑点在人眼看来处于闪烁状态，长时间观看易产生眩晕感，用户的观看体验较差。而本申请实施例中，发光组件发出的激光可以在扩散片或复眼透镜的作用下变得较为均匀，进而将这些激光用于投影产生的干涉较弱，可以减弱投影设备进行投影显示时的散斑效应，避免投影图像变花，提高投影图像的显示效果，避免人眼观看产生的眩晕感。
以及，在上述实施例基础上，图4-2示出了本申请提供的另一种光源组件的光路示意图。
与图2-1，图2-2，图4-1所示处的光源组件的示意图的不同在于，图4-2中，发光组件101的出光面与荧光轮103的轮面垂直，而不是平行。沿发光组件101的出光面方向还设置有转折镜片108，用于将发光组件发出的光束反射向荧光轮103的轮面方向。
在具体实施中，发光组件101可以为MCL型激光器101，激光器101的出光面可以与荧光轮103的轮面或受光面垂直。
光源组件10还可以包括多个转折镜片108，该多个转折镜片108可以沿激光器101的出光方向排布，该多个转折镜片108用于反射激光器10出射的光束以形成多束光。该多个转折镜片108与激光器101的出光面的距离可以均不同。如图4-2所示，该多个转折镜片108可以包括两个反射镜片，该两个反射镜片分别用于反射激光器101出射的光束中的不同部分，以形成第一束激光S1和第二束激光S2，且第一束激光S1和第二束激光S2之间具有间隙。
示例地，每个转折镜片与激光器的出光面的距离可以包括：该转折镜片靠近激光器的表面中的任一点与该出光面的距离。该多个转折镜片可以满足：任意两个转折镜片中，一个转折镜片在激光器的出光面上的至少部分正投影，位于另一个转折镜片在激光器的出光面上的正投影之外；该一个转折镜片中的点与激光器的最小间距可以大于另一个转折镜片中的点与激光器的最大间距。故每个转折镜片靠近激光器的表面中的任一点与激光器的距离，均不同于其他转折镜片靠近激光器的表面中所有点与激光器的距离。
在一具体实施中，转折镜片的各个表面可以均为反光面，或者转折镜片中也可以仅朝向激光器101的表面为反光面。本申请实施例中转折镜片的个数可以为大于或等于1的整数，图4-2以光源组件10包括两个转折镜片为例进行示意，在一具体实施中，该转折镜片的个数也可以为一个、三个、四个或更多。光源组件仅包括一个转折镜片时，该转折镜片可以用于调整激光器发出的激光的传输方向。在光源组件包括多个转折镜片时，该多个转折镜片可以用于对激光器发出的激光进行分束，且还可以通过调整各个转折镜片的位置调整分束得到的各束激光之间的距离。
示例地，如图7所示，激光器101可以仅发出一束激光，该一束激光可以射向两个转折镜片108，每个转折镜片108可以分别反射该一束激光中射向该转折镜片108的部分激光，进而该两个转折镜片108可以将该一束激光分成第一束激光S1和第二束激光S2。如 图7所示，光源组件中两个转折镜片108在x方向(也即激光器101的出光方向)上的间距越大，对激光器101发出的激光进行分束得到的该两束激光的间距就越大。故可以通过调整各个转折镜片108在激光器101的出光方向上的间距，来调整各个转折镜片108射出的各束激光之间的间距。
以及，图4-3是在图4-1和图4-2示例基础上提供的再一光源组件的实施例。
在图4-3所示的光源组件图示中，激光器101可以发出两束光，并经过转折镜片108的转折作用，形成两束射向第二镜组106的激光光束。第一束激光和第二束激光均不通过第二镜组6的光轴，经过第二镜组106的缩束，第一束激光和第二束激光的光束均变细，并避开第一反射部1022a和第二反射部1022b，射向第一准直镜组105。第一准直镜组105和第二镜组的光轴重合，经过缩束的第一束激光和第二束激光照射至第一准直镜组镜面的不同位置，并经过会聚后入射荧光轮的同一光斑位置，对荧光轮103的荧光区进行激发，或者被荧光轮103的反射区反射。
无论是被荧光轮反射回的第一束激光、第二束激光，还是被荧光轮反射回的第一荧光和第二荧光，时序性地射向第一反射部1022a、第二反射部1022b，并被该两个反射部反射向光源组件的出光口方向，形成时序性的照明光束。
在本申请方案的上述一个及多个实施例中，发光组件发出的第一束激光和第二束激光均作为激发光，并射向第一准直镜组镜面的不同位置，激发荧光轮产生不同的第一荧光和第二荧光。
首先，第一束激光和第二束激光均发出作为激发光，且从不同的位置入射第一准直镜组，进而入射至荧光轮表面的方向不同，根据反射定律，两束激光光束照射激发荧光轮时，使荧光轮受激产生不同出射方向的两束荧光。
由于激光光束为高能光束，如果期望以提高单束激光光束的能量密度来提高荧光的发光功率，不但会给光路中的光学镜片带来不可靠性和较高耐热要求，导致光路架构成本的增加，还有可能因为高能量密度的光束的照射给荧光轮带来散热的问题，反而降低荧光转换效率。
在本申请技术方案中，将激光激发光束设置为两束，对于设置于激发光路中的镜片来说，不同的两束光照射至镜片的不同位置，可以减轻镜片局部长期受高能光束照射带来的老化或者性能下降问题。
其次，通过将两束激光照射至准直透镜组的不同位置，进而入射至荧光轮的方向也不同，当会聚于荧光轮的反射区时，两束激光光束被反射后再次透过准直镜组后按照反射定律进行出射，从而两束激光光束入射到不同的反射部件，并被不同的反射部件反射。
以及，同理地，将两束激光照射至准直透镜组的不同位置，进而入射至荧光轮的方向也不同，当会聚于荧光轮的荧光区时，该两束激光激发荧光区产生两束荧光，两束荧光被荧光轮轮反射后也经准直透镜组射向不同的反射部件。反射部件可以分时的将两束激光光束和荧光光束向同一方向反射，以完成合光。
如此一来，随着荧光轮的转动时序，光源组件可以时序性输出激光光束和荧光光束。
并且，在本申请技术方案中，荧光轮上设置有激光反射区，与相关技术中设置激光透射区进而需要设置中继回路系统相比，本申请方案中的光源组件光学部件少，光路架构紧凑，在实现较高发光功率的同时还能够兼顾光源组件的小型化。
以及，作为上述实施例的改进或变型，在一具体实施中，光源组件10的出光口方向还可以设置集光部件，或者，依次设置会聚透镜和集光部件，完成经第一反射部和第二反射部时序性反射的荧光、激光光束的收集，作为光源组件的输出。
在本申请的一种具体实施中，第一反射部，第二反射部为两个独立设置的反射镜，该反射镜为全波段反射镜，或者为反射特定多个波段的反射镜，比如可以反射所需的红色波段或黄色波段、绿色波段、蓝色波段。
以及，作为上述一个或多个实施例的变型，在本申请的另一种具体实施中，第一反射部、第二反射部分别为设置于一个合光镜片上的第一反射区和第二反射区，该第二反射区和第一反射区之间具有第二透射区，该第二透射区用于透射第一束激光和第二束激光中两者任一。
而第一束激光和第二束激光两者另一可以从第一反射区或第二反射区远离上述第二透射区的一侧透过。
或者，该合光镜片还具有第一透射区，用于透射第一束激光和第二束激光中两者另一，以及，第一透射区和所述第二透射区之间设置有第二反射区。
如图5-1所示的一种光源组件的光路示意图，还包括合光镜片102，倾斜于荧光轮103的轮面设置，包括至少一个透射区，在本申请示例中，对应于第一束激光和第二束激光，合光镜片102包括两个透射区，其中，第一透射区位于合光镜片102远离荧光轮103的一端，第一反射区位于合光镜片102靠近荧光轮103的一端，而第二透射区和第二反射区则位于第一反射区和第一透射区之间。
在一种具体实施中，经第一透射区透射的激光光束照射至荧光轮上后，随轮的旋转，或被反射，或激发荧光轮产生荧光，均可被荧光轮反射后入射到达第一反射区，以及，经第二透射区透射的激光光束照射至荧光轮上后，同理也是或被反射，或激发荧光轮产生荧光，均可被荧光轮反射后入射到达第二反射区。
如图5-1中所示，第一束激光S1和第二束激光S2分别透射通过合光镜片102的不同透射区(如第一透射区1021a和第二透射区1021b)，以及，第一束激光S1和第二束激光S2均通过第一准直镜组105会聚后入射至荧光轮103。也即是，第一束激光S1和第二束激光S2通过合光镜片102的不同透射区射向第一准直镜组105，进而通过第一准直镜组105会聚后入射至荧光轮103。
随荧光轮103旋转，当荧光区接收第一束激光S1和第二束激光S2的照射时，荧光区受激发产生的荧光被荧光轮103反射，并透射通过第一准直镜组105；合光镜片102还包 括多个反射区(如第一反射区1022a和第二反射区1022b)，经第一准直镜组105透射的荧光分别入射至合光镜片102的不同反射区，合光镜片102不同的反射区将荧光朝向出光口方向反射。此时该第一束激光和第二束激光也即是荧光的激发光束，该荧光区被激发射出的荧光可以称为受激光束。在一具体实施中，光源组件10的出光口方向(如图2-1中的x方向)可以垂直于合光镜片102、第一准直镜组105和荧光轮103的排布方向(也即y方向)。
当荧光轮103的反射区接收第一束激光S1和第二束激光S2的照射时，第一束激光S1和第二束激光S2被荧光轮103的反射区反射并再次透射通过第一准直镜组105后，入射至合光镜片102的不同反射区，合光镜片102的该不同反射区将第一束激光S1和第二束激光S2朝向出光口方向反射。如图5-1所示，第一束激光S1被荧光轮103的反射区反射并再次透射通过第一准直镜组105后，入射至合光镜片102的第一反射区1022a；第二束激光S2被荧光轮103的反射区反射并再次透射通过第一准直镜组105后，入射至合光镜片102的第二反射区1022b。
其中，合光镜片102的透射区或反射区间隔设置。例如，合光镜片102的透射区和反射区可以交替设置。如图5-1或图6中第一透射区1012a和第二透射区1012b之间间隔有第二反射区1022b，第一反射区1022a和第二反射区1022b之间间隔有第二透射区1012b。
合光镜片102中的透射区可以透射发光组件101发出的光(如第一束激光和第二束激光)，合光镜片102中的反射区可以将射入的光(荧光、第一束激光、第二束激光)均反射至光源组件10的出光口。
在一具体实施中，如图5-1所示，第一准直镜组105可以包括至少一个凸透镜，且每个凸透镜的凸弧面朝向合光镜片102。
前述多个实施例中图示均以该第一准直镜组105包括两个凸透镜为例进行示意，比如第一准直镜组105还可以是一片超球面透镜和一片平凸透镜形成的透镜组或凹凸透镜形成的透镜组。
在一具体实施中，第一准直镜组105也可以包括一个或三个凸透镜。当第一准直镜组105包括多个凸透镜时，该多个凸透镜可以沿合光镜片102与荧光轮103的排布方向依次排布，且该多个凸透镜的光轴共线。第一准直镜组105包括多个凸透镜可以保证射入第一准直镜组的激光更精准地在荧光轮103会聚。
在一具体实施中，如图5-1所示，荧光轮103可以绕转轴Z转动，以使从合光镜片102透射至荧光轮103的激光(如包括第一束激光和第二束激光)在荧光区和反射区之间切换。
在一具体实施中，该荧光轮103可以呈圆盘状，该圆盘的盘面可以与该第一方向相交，该转轴Z可以经过该圆环的圆心且垂直于圆盘的盘面。荧光轮103的荧光区用于在射入的激光的激发下，出射颜色与该激光的颜色不同的荧光；荧光轮103的反射区用于反射射入的激光。在一具体实施中，荧光区在激光的激发下可以向各个方向发出荧光，如该荧光区的发光角度可以为180度，或者也可以为其他小于180度范围的角度。
本申请实施例中，第一束激光和第二束激光穿过合光镜片102射向荧光轮103的反射 区后，该荧光轮103的反射区可以将该第一束激光和第二束激光反射至合光镜片102中的不同反射区，进而合光镜片102中的不同反射区可以将该第一束激光和第二束激光反射至出光口。第一束激光和第二束激光穿过合光镜片102射向荧光轮103的荧光区后，该荧光区可以在该第一束激光和第二束激光的激发下发出荧光，且将该荧光射至合光镜片102中的反射区，进而合光镜片102中的反射区可以将该荧光反射至光源组件的出光口。
需要说明的是，图5-1中仅以发光组件101发出的第一束激光和第二束激光，分别透过合光镜片102的第一透射区1021a和第二透射区1021b，进而射向荧光轮103的反射区的情况，对光线的传输过程进行示意。此种情况中，荧光轮103的反射区反射的光线可以仅射向合光镜片102中的反射区，如第一束激光射向第一反射区1022a，第二束激光射向第二反射区1022b。
在一具体实施中，对于发光组件101发出的光射向荧光轮103的荧光区的情况，该荧光区发出的荧光可以既射向合光镜片102中的反射区，还可以射向合光镜片102中的透射区，本申请实施例未对此种情况的光线传输过程进行示意。
本申请实施例中，合光镜片102中的透射区仅需保证可以透过发光组件101发出的激光且反射荧光轮的荧光区发出的荧光即可，合光镜片102中的反射区仅需保证可以反射发光组件101发出的激光和荧光轮的荧光区发出的荧光即可；对于与激光和荧光颜色均不同的光是否能透过在该合光镜片102中的透射区或反射区，本申请实施例不做限定。在一具体实施中，合光镜片102中的透射区可以反射与该激光和荧光颜色均不同的光，合光镜片102中的反射区可以反射所有颜色的光。
在一具体实施中，发光组件发出的激光的颜色可以为蓝色，即第一束激光和第二束激光均为蓝色激光，荧光轮中的荧光区在该蓝色激光的激发下发出的荧光的颜色可以包括红色、绿色和黄色中的至少一种。在一具体实施中，发光组件发出的激光以及荧光区发出的荧光的颜色也可以为其他颜色，本申请实施例不做限定。
本申请实施例中，发光组件101可以向合光镜片102发出激光，且该激光可以透过合光镜片102中的透射区射向第一准直镜组105，进而透过第一准直镜组105射向荧光轮103。在光源组件10工作时荧光轮103可以绕其转轴Z转动，进而透过合光镜片的激光可以在荧光轮103的荧光区和反射区之间切换。本申请实施例中，将发光组件发出的激光在荧光轮所在处射向的区域称为激光的照射区。例如，随着荧光轮103的转动，在荧光轮103的反射区位于该照射区时，也即是透过合光镜片102的激光射向该荧光轮103的反射区时，该荧光轮103的反射区可以将该激光反射至合光镜片102的反射区。接着该合光镜片102的反射区将该激光反射至光源组件10的出光口。荧光轮103的荧光区位于该照射区时，也即是透过合光镜片102的激光射向该荧光区时，在该激光的激发下荧光区可以向合光镜片102出射颜色与激光的颜色不同的荧光。接着该合光镜片102的反射区将该荧光反射至光源组件10的出光口。如此实现了光源组件10的出光口时序性输出颜色不同的激光和荧光的作用。
以及，在图5-1所示的光源组件实施例基础上，图5-2示出了另一种光源组件的光路 示意图。与图5-1示例不同的是，图5-2中的发光组件101的出光路径中还设置有转折镜片108，以及，光源组件还包括第二镜组106，以及还可以包括第三镜片107，对于发光组件和转折镜片的关系，以及第二镜组106和第三镜片107在光路中的作用可参见图4-1、图4-2、图4-3中的介绍，在此不再赘述。而与图4-1、图4-2和图4-3中不同的是，第一束激光和第二束激光经过第二镜组106，或还经过第三镜片107匀化后，具体地入射至合光镜片102的透射区，比如第一透射区、第二透射区，并经过第一透射区、第二透射区的透射后再入射第一准直镜组105。
示例地，请继续参考图5-1，图5-2，第一透射区1021a位于合光镜片102远离荧光轮103的一端，第一反射区1022a位于合光镜片102靠近荧光轮103的一端。该第二透射区1021b可以为透射至荧光轮103中反射区的激光透过的透射区，第一透射区1021a可以为透射至荧光轮103中荧光区的激光透过的透射区。例如，随着荧光轮103的转动，在荧光轮103的反射区位于发光组件101发出的激光的照射区时，激光器101可以向更靠近激光器的反射镜片发出激光；该激光可以在反射镜片上反射后穿过第二透射区1021b射向荧光轮103的反射区，进而该荧光轮103的反射区可以将该激光反射至第二反射区1022b。在荧光轮103上的荧光区位于发光组件101发出的激光的照射区时，激光器101可以向更远离激光器的反射镜片发出激光；该激光可以在反射镜片上反射后穿过第一透射区1021a射向荧光区；在该激光的激发下荧光区可以向第一反射区1022a出射荧光。由于荧光从荧光轮103到第一反射区1022a的光程较短，故荧光在第一反射区1022a上形成的光斑较小，荧光的光束较细，第一反射区1022a较容易将荧光全部反射向光源组件的出光口。
以及，基于上述实施例的光源组件架构，结合附图对合光镜片102进行介绍：
在一具体实施中，合光镜片102可以倾斜于发光组件发出的第一束激光和第二束激光的行进方向设置，也即是合光镜片102与该行进方向存在夹角。如该第一束激光与第二束激光的行进方向为合光镜片102、第一准直镜组105以及荧光轮103的排布方向(也即图5-1中的y方向)，该合光镜片102可以相对于该y方向倾斜。如该合光镜片102可以朝该出光口倾斜。或则，该合光镜片102相对于荧光轮103的轮面呈45度倾斜设置。
在一具体实施中，合光镜片102中的透射区和反射区的个数可以大于或等于发光组件发出的光束的个数。如本申请实施例以发光组件101发出两束光，合光镜片102包括两个透射区和两个反射区为例。在一具体实施中，合光镜片102中透射区和反射区个数也可以为三个、四个或者更多，本申请实施例对此不做限定。在一具体实施中，合光镜片除该多个透射区和该多个反射区之外还可以包括其他区域，可以并无光线射向该其他区域。
示例地，如图5-1、图5-2及图6的合光镜片的平面结构图所示，合光镜片102包括第一透射区1021a、第二透射区1021b、第一反射区1022a和第二反射区1022b。合光镜片102中的透射区与反射区可以沿第二方向(如图5-1中的x方向)交替设置，如第一反射区1022a、第二透射区1021b、第二反射区1022b和第一透射区1021a可以沿第二方向依次排布。合光镜片102朝出光口倾斜，比如45度倾斜设置，故第一透射区1021a可以远离第一准直镜 组105设置，第一反射区1022a可以靠近所述第一准直镜组105设置。需要说明的是，合光镜片102呈45度倾斜设置，也即是合光镜片102与发光组件发出的激光的行进方向的夹角为45度。该夹角也可以为其他角度，本申请实施例不做限定。
本申请实施例中，合光镜片102中的每个透射区可以与一个反射区相对应，从某透射区透过的光线若在荧光轮的反射区反射，则可以被荧光轮的反射区反射后射向合光镜片中该透射区对应的反射区。若从某透射区透过的光线入射至荧光轮的荧光区，则激发出的荧光被荧光轮反射后，至少射向合光镜片中该透射区对应的反射区。示例地，请继续参考图6，合光镜片102中的第一透射区1021a与第一反射区1022a对应，第二透射区1021b与第二反射区1022b对应。
在一具体实施中，合光镜片102中第一透射区1021a的面积可以小于第二透射区1021b的面积，第一反射区1022a的面积可以小于第二反射区1022b的面积。
请继续参考图5-1，图5-2，第一透射区1021a与发光组件101的距离可以小于第二透射区1021b与发光组件101的距离，激光(如第一束激光S1)从发光组件101到第一透射区1021a的光程，短于激光(如第二束激光S2)从发光组件101到第二透射区1021b的光程；第一反射区1022a与荧光轮103的距离小于第二反射区1022b与荧光轮103的距离，光线(如第一束激光S1或荧光)从荧光轮103到第一反射区1022b的光程，短于光线(如第二束激光S2或荧光)从荧光轮103到第一反射区1022a的光程。由于光线的光程越短形成的光斑越小，所以第一透射区1021a上的光斑可以小于第二透射区1021b上的光斑，第一反射区1022a上的光斑可以小于第二反射区1022b上的光斑。进而，第一透射区1021a仅需较小的面积即可完成对射入的激光的透射，第一反射区1022a仅需较小的面积即可完成对射入的光线的反射，故第一透射区1021a的面积可以小于第二透射区1021b的面积，第一反射区1022a的面积可以小于第二反射区1022b的面积。
本申请实施例中，可以通过下述方式实现合光镜片102中反射区和透射区的功能。
在一种可选方式中，可以在透光基板上不同区域设置功能膜层，以得到合光镜片。示例地，对于反射区，合光镜片102的反射区可以具有镀膜。该镀膜可以为全波段反射膜，或者，该镀膜为针对红光波段、绿光波段和蓝光波段中至少一种波段的反射膜。该镀膜可以位于合光镜片102靠近第一准直镜组105的一侧，也可以位于合光镜片102远离第一准直镜组105的一侧，本申请实施例不做限定。对于透射区，合光镜片102靠近第一准直镜组105的一侧，至少在透射区的表面设置有二向色膜。该二向色膜可以用于透蓝光，反射红光、黄光和绿光中至少一种光。例如，荧光轮的荧光区射向合光镜片102的荧光包括红光，在合光镜片102的透射区表面设置有二向色膜的基础上，即使该荧光射向该透射区，也会被该二向色膜反射，进而射向光源组件的出光口，提高了荧光的利用率。
在另一种可选方式中，合光镜片102的反射区也可以直接采用反光材料制作而成。在一具体实施中，合光镜片102中的透射区也可以直接采用具有二向色性的材料制备而成，该材料用于透蓝光，反射红光、黄光和绿光中至少一种光。此时，可以不再设置该镀膜和二向色膜。
在一具体实施中，合光镜片102远离第一准直镜组105的一侧设置有增透膜；或者，合光镜片102远离第一准直镜组105的一侧的透射区区域设置有增透膜。在一具体实施中，该增透膜针对全光谱的光线增加透过率，也可以仅针对发光组件发出的激光(如蓝色激光)增加透过率，本申请实施例不做限定。
以及，在图5-2所示的光源组件光路示意图中，光源组件中转折镜片108的个数可以与合光镜片中透射区的个数相同，且光源组件中的各个转折镜片可以与合光镜片中的各个透射区一一对应。每个转折镜片可以将射入的激光反射至对应的透射区。示例地，请继续参考图5-2，两个转折镜片108中，靠近激光器的转折镜片与合光镜片102中的第一透射区1021a对应，该转折镜片将射入的激光反射至第一透射区1021a。远离激光器的转折镜片与合光镜片102中的第二透射区1021b对应，该转折镜片可以将射入的激光反射至第二透射区1021b。本申请实施例中可以根据合光镜片中各个透射区的位置来设计对应的转折镜片的位置，以保证每个转折镜片将射入的激光反射至对应的透射区。
本申请实施例提供的光源组件中，合光镜片包括多个透射区和反射区，荧光轮包括荧光区和反射区，发光组件发出的第一束激光和第二束激光作为激发光，可以透过合光镜片中不同的透射区均射向第一准直镜组，进而通过第一准直镜组会聚后射向荧光轮。随荧光轮旋转，当该两束光射向荧光轮的反射区时，该两束光被荧光轮的反射区反射，并再次通过第一准直镜组后出射至合光镜片的不同反射区，进而被该不同反射区反射至光源组件的出光口方向。当该两束光射向荧光区时，该两束光激发荧光区产生荧光，荧光被荧光轮反射后也向合光镜片的不同反射区出射，进而该不同反射区将荧光反射至出光口方向。如此一来，随着荧光轮的转动时序，光源组件可实现发光组件发出的两束光与荧光区受激发产生的荧光均通过荧光轮的反射后被同一合光镜片合光，均被该合光镜片反射向光源组件的出光口方向，从而以紧凑的光路架构，较少的光学镜片就能够实现激发光束和受激光束的合光，该光源组件的体积也较小。
另外，由于激光在穿过二向色镜时会发生损耗，而相关技术中激发光束射向出光口的过程中需要两次穿过二向色镜，故激发光束的损耗较高。而本申请实施例中激发光束仅需要经过一次合光镜片即可射向出光口，故降低了激发光束的损耗。
以及，基于上述多个实施例的光源组件架构，结合附图对发光组件进行介绍：
在一具体实施中，发光组件101发出的第一束激光和第二束激光的波段可以具有重叠。示例地，该第一束激光和第二束激光均可以为蓝光。如该第一束激光和第二束激光的波段均可以为400纳米～450纳米；或者，该第一束激光的波段可以为400纳米～430纳米，第二束激光的波段可以为420纳米～450纳米；或者该第一束激光和第二束激光的波段也可以为其他波段，本申请实施例不做限定。
在一具体实施中，第一束激光和第二束激光的主波长不同。示例地，第一束激光与第二束激光可以为主波长不同的蓝光。需要说明的是，一束光由一个波段中多个波长的光复合得到，人眼感受到的该束光是其中各波长的光共同作用的综合结果，人眼感觉到该束光 为对应于一个单一波长的光，该波长即为该束光的主波长。
本申请实施例中的第一束激光和第二束激光可以来源于同一个发光组件，或者该第一束激光和第二束激光也可以来源于不同的发光组件，本申请实施例不做限定。该发光组件可以为多芯片激光二极管(multi_chip Laser Diode，MCL)型的激光器，MCL型的激光器可以包括封装在同一管壳中阵列排布的多个发光芯片，每个发光芯片均可以独立的发出激光。该第一束激光和第二束激光分别由该激光器不同的发光区域射出，如该第一束激光和第二束激光可以分别由该激光器中的不同发光芯片发出。
请继续参考图2-1，图2-2，图4-1，图5-1，激光器101的出光面与荧光轮103的轮面或受光面可以相向平行。
该激光器101、合光镜片102或者第一反射部1022a、第二反射部1022b、第一准直镜组105和荧光轮103沿该激光器101的出光方向依次排布，如激光器可以直接向合光镜片102的透射区发出激光。
在一具体实施中，激光器101可以发出一束激光，该一束激光可以射向合光镜片102的各个透射区。或者，激光器101也可以发出多束激光，以使每束激光射向一个透射区。
在激光器的第一种发光方式中，激光器可以同时向多个反射镜片均发出激光。例如，激光器可以包括多个发光芯片，该多个发光芯片可以同时发光，进而实现激光器同时向多个反射镜片均发出激光。此种情况中，激光器发出的激光的光束较粗，激光的亮度较高，该激光在通过反射镜片、合光镜片中的透射区、荧光轮和合光镜片中的反射区之后射向会聚透镜时亮度也较高。因此，会聚透镜可以将较高亮度的光用于投影设备的投射，进而可以保证投影设备进行投影得到的图像的亮度较高，保证了投影设备的投影效果较好。
在激光器的第二种发光方式中，激光器可以在不同时间向不同反射镜片发出激光。例如，激光器包括多个发光芯片，且各个发光芯片均对应一个反射镜片，每个发光芯片能够向对应的反射镜片发光。在不同时间激光器中发光的发光芯片不同，进而实现激光器可以在不同时间向不同反射镜片发出激光。此种情况中，由于同一时间仅激光器中的部分发光芯片发光，故发出的激光的光束较细，该激光在通过反射镜片、合光镜片中的透射区、荧光轮和合光镜片中的反射区之后射向会聚透镜时光束也较细。如此可以保证该激光光束较容易全部射入会聚透镜，避免激光的浪费，提高了会聚透镜会聚光的简易性。由于此种情况激光器中的发光芯片无需持续发光，故可以采用脉冲电流为发光芯片供电，而脉冲电流的能量较高，故可以激光发光芯片发出亮度较高的激光。且激光器中的发光芯片无需持续发光，可以提高激光器中发光芯片的使用寿命。
在一具体实施中，激光器可以根据荧光轮中荧光区与反射区的切换时序，向不同反射镜片发出激光，使得不同反射镜片反射的激光穿过对应的透射区射向荧光轮的不同区域(如荧光区和反射区)。在一具体实施中，激光器向各个反射镜片发光的时序也可以与荧光轮中荧光区与反射区的切换时序无关，本申请实施例不做限定。
下面将结合附图对发光组件发出的光的传输与第一准直镜组和合光镜片的关系进行 介绍：
透过合光镜片102中的透射区的激光可以透过第一准直镜组105中光轴h之外的区域，第一准直镜组105可以将射入的激光会聚至荧光轮103，如会聚至荧光轮103中经过第一准直镜组105的光轴的区域。需要说明的是，光线沿第一准直镜组的光轴射入第一准直镜组时不会有任何光学特性的变化，若穿过合光镜片中透射区的激光沿第一准直镜组的光轴穿过第一准直镜组射向荧光轮，则从荧光轮出射的光也会沿第一准直镜组的光轴穿过第一准直镜组再射向该透射区，如此该激光将无法到达会聚透镜。因此，本申请实施例中发光组件发出的激光需要透过透射区射向第一准直镜组中光轴之外的区域，进而射向荧光轮。
在一具体实施中，发光组件发出的第一束激光和第二束激光可以入射至第一准直镜组的不同镜面位置。在一具体实施中，第一束激光和第二束激光入射至第一准直镜组的镜面位置不关于第一准直镜组的光轴对称。如此可以避免第一束激光会聚至荧光轮的反射区时，被该反射区反射至第二束激光射入的透射区的情况。
在一具体实施中，第一束激光和第二束激光入射至第一准直镜组上的镜面位置及在荧光轮上的会聚位置各自的连线与第一准直镜组的光轴所成的夹角不同。如第一准直镜组中第一束激光射向的位置与第一束激光在荧光轮上的会聚位置的连线为第一连线，该第一连线与第一准直镜组的光轴的夹角为第一夹角；第一准直镜组中第二束激光射向的位置与第二束激光在荧光轮上的会聚位置的连线为第二连线，该第二连线与第二镜组的光轴的夹角为第二夹角；该第一夹角不同于第二夹角。示例地，可参见图2-2，第一束激光S1与第一准直镜组102的光轴h形成的第一夹角为角α，第二束激光S2与第一准直镜组102的光轴h形成的第二夹角为角β，α＞β。这样，第一束激光与第二束激光可以以不同的入射角度入射至第一准直镜组的镜面，比如，第一准直镜组的第一片透镜的凸面，但根据反射原理，第一束激光和第二束激光各自的反射光路将不会重叠。该第一指透镜指第一准直镜组中靠近合光镜片的透镜。
在一具体实施中，对于合光镜片102中的每个透射区及对应的反射区，该透射区与反射区分别位于第一准直镜组105的光轴h的两侧；该透射区在荧光轮103上的至少部分正投影与该反射区在荧光轮103上的至少部分正投影关于光轴h对称。本申请实施例中某部件在荧光轮上的正投影可以指该部件在荧光轮的盘面上的正投影。在一具体实施中，在合光镜片102包括多个透射区和多个反射区时，该多个透射区可以位于光轴h的两侧，且不关于光轴h对称，合光镜片102中透射区和反射区可以交替排布。
示例地，第二透射区1021b与对应的第二反射区1022b位于第一准直镜组105的光轴h的两侧，第一透射区1021a与对应的第一反射区1022a位于第一准直镜组105的光轴h的两侧。第二透射区1021b与第一透射区1021a也位于第一准直镜组105的光轴h的两侧，且不关于光轴h对称，如此可以保证射向一个透射区的激光不会从另一个透射区射出。在一具体实施中，第一透射区1021a与光轴h的间距可以大于第二透射区1021b与光轴h的间距，进而保证穿过第一透射区1021a的激光在激发荧光区发出的荧光后，该荧光射向的第一反射区1022a相比第二反射区1022b更远离光轴h，保证该荧光到第一反射区1022a 的光程较短，该荧光在第一反射区1022a形成的光斑较小。
需要说明的是，对于发光组件中的激光器同时向各个反射镜片发光的情况，可以参考上述发光组件根据荧光轮中荧光区与反射区的切换时序，向不同反射镜片发出激光的介绍，本申请实施例不再赘述。
综上所述，合光镜片包括多个透射区和反射区，荧光轮包括荧光区和反射区，发光组件发出的第一束激光和第二束激光作为激发光，可以透过合光镜片中不同的透射区均射向第一准直镜组，进而通过第一准直镜组会聚后射向荧光轮。随荧光轮旋转，当该两束光射向荧光轮的反射区时，该两束光被荧光轮的反射区反射，并再次通过第一准直镜组后出射至合光镜片的不同反射区，进而被该不同反射区反射至光源组件的出光口方向。当该两束光射向荧光区时，该两束光激发荧光区产生荧光，荧光被荧光轮反射后也向合光镜片的不同反射区出射，进而该不同反射区将荧光反射至出光口方向。如此一来，随着荧光轮的转动时序，光源组件可实现发光组件发出的两束光与荧光区受激发产生的荧光均通过荧光轮的反射后被同一合光镜片合光，均被该合光镜片反射向光源组件的出光口方向，从而以紧凑的光路架构，较少的光学镜片就能够实现激发光束和受激光束的合光，该光源组件的体积也较小。
需要说明的是，本申请上述实施例仅以光源组件包括用于发出一种颜色的光的发光组件为例进行解释说明。在一具体实施中，光源组件也可以包括多个发光组件，每个发光组件可以发出一种颜色的光。
本申请技术方案还提供了一种激光投影设备，如图9所示的超短焦激光投影设备示意图，该投影设备斜向上投射至光学屏幕进行成像，投影设备距离光学屏幕所在的平面距离较近，可以较小的投射比实现大尺寸的投影显示。
以及，图8示出了一种激光投影设备的投影光路示意图。如图8所示，光源组件100输出的光束入射至光机200中，光机200再将光束入射至镜头300。
光源组件100还包括多个光学镜片，对激光光束和荧光光束进行合光和会聚。
从光源组件100出射的光束入射至光机200，通常匀化部件，比如光导管位于光机200的前端，用于接收光源的照明光束，具有混光和匀化的作用，且光导管的出口为矩形，对光斑具有整形效果。光机200中还包括多片透镜组，TIR或RTIR棱镜用于形成照明光路，将光束入射至核心关键器件-光阀，光阀调制光束后入射镜头300的透镜组中进行成像。
根据投影架构的不同，光阀可以包括很多种，比如LCOS，LCD或者DMD，在本示例中，应用DLP(Digital Light Processing)投影架构，光阀为DMD芯片或称数字微镜阵列。在光源100的光束达到光阀DMD之前，还会经过光机照明光路的整形，使照明光束符合DMD所要求的照明尺寸和入射角度。DMD表面包括成千上万个微小反射镜，每个小反射镜可单独受驱动进行偏转，比如TI提供的DMD芯片中，可进行正负12度或者正负17度的偏转。其中，正的偏转角度反射出的光，称之为ON光，负的偏转角度反射出的光， 称之为OFF光，OFF光为无效光，通常打到壳体上或者设置吸光装置吸收掉。ON光是DMD光阀表面的微小反射镜接收照明光束照射，并通过正的偏转角度射入镜头300的有效光束，用于投影成像。光源组件100出射的照明光束的质量直接影响了照射到光阀DMD表面的光束质量，从而经过镜头300投影成像后反映到投影画面上。
在本示例中，镜头300为超短焦投影镜头，经光阀调制后的光束进入镜头最终是沿着斜向上出射的，这有别于传统的长焦投影中投影光束光轴位于投影画面中垂线的出光方式，超短焦投影镜头相对于投影画面通常具有120％～150％的偏移量，这种投射方式具有较小的投射比(可理解为投影主机距离投影屏幕的距离与投影画面对角线的尺寸的比值)，比如0.2左右甚至更小，能够使得投影设备与投影屏幕距离较近，从而适合于家用，但这种出光方式也决定了光束具有较高的均匀性，否则，相比于传统的长焦投影，投影画面的亮度或色度不均匀性会更为明显。
在本示例中，当采用一个DMD光阀部件时，光源100可以时序性输出三基色，根据三色混光原理，人眼是分辨不到某一时刻光的颜色的，感知到的仍然是混合的白光。而当应用多片光阀部件，比如三个DMD，或者三片式LCD液晶光阀，光源100中的三色基色光可同时点亮输出白光。
本申请实施例提供的投影设备由于应用上述多个实施例中的光源组件，上述光源组件取消了蓝光回路，以较少的光学镜片和紧凑的光学架构实现至少三色光的输出，在上述光源组件小型化的基础上，也利于实现激光投影设备光学引擎结构的小型化，并且还可以为投影设备内的其他结构的排布带来便利，比如该其他结构可以包括散热结构或电路板。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。本申请中术语“A和B的至少一种”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和B的至少一种，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。术语“A、B和C的至少一种”表示可以存在七种关系，可以表示：单独存在A，单独存在B，单独存在C，同时存在A和B，同时存在A和C，同时存在C和B，同时存在A、B和C这七种情况。在本申请实施例中，术语“第一”和“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。术语“多个”指两个或两个以上，除非另有明确的限定。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (18)

  1. 一种光源组件，其特征在于，包括：
    发光组件，用于发出第一束激光和第二束激光；
    荧光轮，设置有荧光区和反射区；
    第一准直镜组，设置于所述第一束激光和所述第二束激光入射所述荧光轮的光路径中；
    所述第一束激光和第二束激光分别入射至所述第一准直镜组镜面的不同位置，并均通过所述第一准直镜组会聚后入射至所述荧光轮，
    随所述荧光轮旋转，当所述荧光区接收所述第一束激光和第二束激光的照射时，对应所述第一束激光和所述第二束激光，所述荧光区能够受激分别产生第一荧光和第二荧光，所述第一荧光和所述第二荧光可均被所述荧光轮反射，并透射通过所述第一准直镜组后分别入射第一反射部和第二反射部；
    所述第一反射部和所述第二反射部均倾斜于所述荧光轮的轮面设置，且所述第一反射部和所述第二反射部互不重叠且具有间隔；
    当所述荧光轮的反射区接收所述第一束激光和第二束激光的照射时，所述第一束激光和所述第二束激光可被所述荧光轮的反射区反射，并再次透射通过所述第一准直镜组后入射至所述第一反射部和所述第二反射部。
  2. 根据权利要求1所述的光源组件，其特征在于，所述第一束激光和所述第二束激光入射至所述第一准直镜组上的镜面位置与在所述荧光轮上的会聚位置各自的连线，与所述第一准直镜组的光轴所成的夹角不同。
  3. 根据权利要求1所述的光源组件，其特征在于，所述第一束激光和所述第二束激光的光轴均不通过所述第一准直镜组的光轴。
  4. 根据权利要求1所述的光源组件，其特征在于，所述第一束激光和所述第二束激光两者之一从所述第一反射部和第二反射部之间的间隔透过，另一从所述第一反射部或第二反射部的远离所述间隔的一侧透过。
  5. 根据权利要求1所述的光源组件，其特征在于，所述光源组件还包括第二镜组，位于所述发光组件和所述第一反射部、所述第二反射部之间，用于缩小从所述发光组件发出的所述第一束激光和第二束激光的光斑；
    所述第一束激光、所述第二束激光均不通过所述第二镜组的光轴。
  6. 根据权利要求5所述的光源组件，其特征在于，所述第一束激光、所述第二束激光不关于所述第二镜组的光轴对称。
  7. 根据权利要求5所述的光源组件，其特征在于，所述第二镜组与所述第一准直镜组的光轴重合。
  8. 根据权利要求1所述的光源组件，其特征在于，所述第一反射部和所述第二反射部均为反射镜。
  9. 根据权利要求1所述的光源组件，其特征在于，所述第一反射部和所述第二反射部分别为设置于合光镜片上的第一反射区和第二反射区，所述第二反射区和所述第一反射区之间具有第二透射区，所述第二透射区用于透射所述第一束激光和所述第二束激光中两者任一。
  10. 根据权利要求9所述的光源组件，其特征在于，所述合光镜片还具有第一透射区，用于透射所述第一束激光和所述第二束激光中两者另一；所述第一透射区和所述第二透射区之间设置有所述第二反射区。
  11. 根据权利要求9所述的光源组件，其特征在于，所述合光镜片倾斜于所述荧光轮的轮面设置，所述第一透射区位于所述合光镜片远离所述荧光轮的一端，所述第一反射区位于所述合光镜片靠近所述荧光轮的一端。
  12. 根据权利要求9所述的光源组件，其特征在于，至少所述合光镜片的第一透射区和第二透射区设置有增透膜；
    和/或，至少所述合光镜片的透射区设置有二向色膜，所述二向色膜用于透蓝光，反射红光、黄光和绿光中至少一种光。
  13. 根据权利要求1所述的光源组件，其特征在于，所述合光镜片的反射区具有镀膜，所述镀膜为全波段反射膜，或者，所述镀膜为针对红光波段、绿光波段和蓝光波段中至少一种波段的反射膜。
  14. 根据权利要求1所述的光源组件，其特征在于，所述第一束激光和所述第二束激光由同一个发光组件的不同发光区域发出。
  15. 根据权利要求14所述的光源组件，其特征在于，所述发光组件的出光面与所述荧光轮的轮面垂直，沿所述发光组件的出光面方向还设置有转折镜片，用于将所述发光组件发出的光束反射向所述荧光轮的轮面方向，
    所述转折镜片为两个，且距离所述发光组件的出光面的距离不同。
  16. 根据权利要求1至15任一所述的光源组件，其特征在于，所述第一束激光和所述第二束激光的波段具有重叠。
  17. 根据权利要求1至15任一所述的光源组件，其特征在于，所述荧光轮具有反射基板，所述荧光区位于所述反射基板上，所述荧光区与所述荧光轮的反射区围合成闭环，所述荧光轮的反射区为所述反射基板的一部分，或者，所述荧光轮的反射区设置反射涂层。
  18. 一种投影设备，其特征在于，所述投影设备包括：权利要求1至17任一所述的光源组件，以及光机和镜头；
    所述光源组件用于向所述光机发出照明光束，所述光机用于将所述光源组件发出的照明光束进行调制，并投射至所述镜头，所述镜头用于将经所述光机调制的光束进行成像。
PCT/CN2021/101573 2020-06-22 2021-06-22 光源组件和投影设备 WO2021259274A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/729,489 US20230359113A1 (en) 2020-06-22 2022-04-26 Laser source and laser projection apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010576383.2A CN113900336B (zh) 2020-06-22 2020-06-22 光源组件和投影设备
CN202010576383.2 2020-06-22

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/101567 Continuation-In-Part WO2021259269A1 (zh) 2020-06-22 2021-06-22 光源组件和投影设备

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/729,489 Continuation-In-Part US20230359113A1 (en) 2020-06-22 2022-04-26 Laser source and laser projection apparatus

Publications (1)

Publication Number Publication Date
WO2021259274A1 true WO2021259274A1 (zh) 2021-12-30

Family

ID=79186587

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/101573 WO2021259274A1 (zh) 2020-06-22 2021-06-22 光源组件和投影设备

Country Status (2)

Country Link
CN (2) CN113900336B (zh)
WO (1) WO2021259274A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628615A (zh) * 2020-12-28 2021-04-09 苏州视奥光电科技有限公司 一种激光光源装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014075221A (ja) * 2012-10-03 2014-04-24 Mitsubishi Electric Corp 光源装置
CN104698729A (zh) * 2013-12-03 2015-06-10 欧司朗有限公司 投影装置,dlp投影仪的光模块和用于制造二向色镜的方法
CN107861324A (zh) * 2016-09-22 2018-03-30 上海激亮光电科技有限公司 单荧光轮双荧光点的激光投影装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014075221A (ja) * 2012-10-03 2014-04-24 Mitsubishi Electric Corp 光源装置
CN104698729A (zh) * 2013-12-03 2015-06-10 欧司朗有限公司 投影装置,dlp投影仪的光模块和用于制造二向色镜的方法
CN107861324A (zh) * 2016-09-22 2018-03-30 上海激亮光电科技有限公司 单荧光轮双荧光点的激光投影装置

Also Published As

Publication number Publication date
CN113900336A (zh) 2022-01-07
CN115933298A (zh) 2023-04-07
CN113900336B (zh) 2022-11-11

Similar Documents

Publication Publication Date Title
CN113311654B (zh) 投影光源和投影设备
CN111562713B (zh) 激光投影设备
CN107797296A (zh) 一种缩束装置、激光光源及激光投影设备
CN111258165B (zh) 激光投影设备
CN116430662B (zh) 一种光源系统及投影设备
WO2021259276A1 (zh) 光源组件和投影设备
CN113934097A (zh) 投影光源和投影设备
US10634981B2 (en) Light source device and projection type display apparatus
WO2021259274A1 (zh) 光源组件和投影设备
CN113900332B (zh) 光源组件和投影设备
WO2021259268A1 (zh) 光源组件和投影设备
JP7400417B2 (ja) 光源光学系、光源装置及び画像表示装置
CN116880119A (zh) 光源装置和投影设备
CN113900335A (zh) 光源组件和投影设备
WO2021259272A1 (zh) 光源组件和投影设备
WO2021143444A1 (zh) 复眼透镜组、光源装置及投影设备
WO2021249202A1 (zh) 光源结构及投影设备
WO2021259269A1 (zh) 光源组件和投影设备
WO2021259282A1 (zh) 光源组件和投影设备
CN113885285A (zh) 光源组件与投影设备
CN113900333B (zh) 光源组件和投影设备
CN113900337A (zh) 光源组件和投影设备
CN217386123U (zh) 激光光源系统和投影设备
WO2021259285A1 (zh) 投影光源和投影设备
CN113900340A (zh) 光源组件和投影设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21827971

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21827971

Country of ref document: EP

Kind code of ref document: A1