WO2020063374A1 - 荧光粉轮、激光光源及激光投影设备 - Google Patents

荧光粉轮、激光光源及激光投影设备 Download PDF

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Publication number
WO2020063374A1
WO2020063374A1 PCT/CN2019/105758 CN2019105758W WO2020063374A1 WO 2020063374 A1 WO2020063374 A1 WO 2020063374A1 CN 2019105758 W CN2019105758 W CN 2019105758W WO 2020063374 A1 WO2020063374 A1 WO 2020063374A1
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WIPO (PCT)
Prior art keywords
light
substrate
transmitting plate
phosphor wheel
laser
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Ceased
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PCT/CN2019/105758
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English (en)
French (fr)
Inventor
高迪
张勇
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Qingdao Hisense Laser Display Co Ltd
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Qingdao Hisense Laser Display Co Ltd
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Application filed by Qingdao Hisense Laser Display Co Ltd filed Critical Qingdao Hisense Laser Display Co Ltd
Publication of WO2020063374A1 publication Critical patent/WO2020063374A1/zh
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • 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

Definitions

  • the present application relates to the field of display technology, and in particular, to a phosphor wheel, a laser light source, and a laser projection device.
  • the laser display technology based on the laser light source because of its wide color gamut, long life, high brightness, and low energy consumption, has the innate advantages of traditional light sources, and is known as the fourth generation after black and white display, color display and digital display. "Inheritor”.
  • the present application provides a phosphor wheel, a laser light source, and a laser projection device, so as to overcome the problem that the inorganic phosphor sheet is fragile in the existing phosphor wheel.
  • a first aspect of the present application provides a phosphor wheel, comprising: a substrate, an inorganic phosphor sheet, a light-transmitting plate, and a motor; the substrate is sleeved on the motor, and the light-transmitting plate is connected to the substrate, so that The inorganic fluorescent sheet is clamped and fixed by the light transmitting plate and the substrate;
  • the substrate, the inorganic fluorescent sheet, and the light-transmitting plate rotate at a high speed under the driving of the motor.
  • An incident light source is incident on the inorganic fluorescent sheet through the light-transmitting plate and generates fluorescence through the inorganic fluorescent sheet.
  • the light-transmitting plate is connected to the substrate through an adhesive, and the inorganic fluorescent sheet is sandwiched between the adhesive, the light-transmitting plate, and the substrate. Space.
  • the inorganic fluorescent sheet is ring-shaped or C-shaped, and an outer diameter of the inorganic fluorescent sheet is the same as an outer diameter of the substrate.
  • the light-transmitting plate is ring-shaped or C-shaped, the outer diameter of the light-transmitting plate is the same as the outer diameter of the substrate, and the inner diameter of the light-transmitting plate is smaller than the inorganic fluorescent sheet. Inner diameter.
  • the light-transmitting plate is a cover-shaped cover structure.
  • the phosphor wheel further includes a filled silica gel, and the filled silica gel is located in a gap between the transparent plate and the substrate.
  • the phosphor wheel further includes a clamping member, and the clamping member is configured to clamp the transparent plate and the substrate together.
  • the holder is wrapped around the outer edges of the light-transmitting plate and the substrate.
  • the number of the clamping members is multiple, and are evenly distributed on the outer edges of the light transmitting plate and the substrate.
  • the light transmitting plate is made of sapphire glass.
  • a second aspect of the present application provides a laser light source, including a laser and the phosphor wheel according to any one of the first aspect of the present application; the laser is disposed on a side of a light transmitting plate of the phosphor wheel;
  • a third aspect of the present application provides a laser projection device, which includes the laser light source, the light machine, a lens, and a projection screen according to the second aspect of the present application.
  • the laser light source provides illumination for the light machine, and is provided by the light source.
  • the lens projects onto the projection screen.
  • Embodiments of the present application provide a phosphor wheel, a laser light source, and a laser projection device.
  • the phosphor wheel includes a substrate, an inorganic fluorescent sheet, a light-transmitting plate, and a motor; the substrate is sleeved on the motor, the light-transmitting plate is connected to the substrate, and the inorganic fluorescent sheet is clamped and fixed by the light-transmitting plate and the substrate; the substrate, the inorganic fluorescent sheet, and the transparent
  • the light plate rotates at a high speed driven by a motor, and an incident light source is incident on the inorganic fluorescent sheet through the light transmitting plate, and generates fluorescence through the inorganic fluorescent sheet.
  • FIG. 1 is a schematic structural diagram of a laser light source display system in the related art
  • FIG. 2 is a first schematic structural diagram of a phosphor wheel in the related art
  • FIG. 3 is a second structural schematic diagram of a phosphor wheel in the related art
  • FIG. 4 is a schematic structural diagram of the phosphor wheel shown in FIG. 3 after being deformed by heat;
  • FIG. 5 is a schematic structural diagram of a phosphor wheel according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a phosphor wheel according to another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a phosphor wheel according to another embodiment of the present application.
  • FIG. 8 is a schematic diagram of a distribution of filled silica gel of a phosphor wheel provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a phosphor wheel according to another embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a phosphor wheel according to another embodiment of the present application.
  • the laser display technology mainly includes three primary colors: solid-color laser, phosphor + blue light, and LED + laser.
  • Most laser light source display systems use phosphor + blue light display technology.
  • This technology uses a monochromatic laser (i.e., blue light laser) combined with multiple colors of yellow, red, green, and other phosphors to rotate the phosphor wheel to produce red, green, and blue. Base color.
  • FIG. 1 is a schematic structural diagram of a laser light source display system in the related art.
  • the display system includes a blue laser 11, a collimating lens 12, a phosphor wheel 13, an optical machine lighting device 14, a lens imaging device 15, and a display screen 16.
  • the basic working principle is:
  • the blue laser hits the phosphor wheel 13 rotating at a high speed.
  • the phosphor wheel 13 is provided with a phosphor which is excited by the laser 11 and can emit light different from the blue laser color. It can generate the primary light source required for projection display according to the time sequence.
  • the primary color light source passes through the optical-mechanical lighting device 14 and the lens imaging device 15 to finally synthesize a color picture on the display screen 16.
  • the phosphor wheel is a key component of laser projection.
  • the phosphor wheel is rotated at high speed by a motor connected to its axis.
  • the phosphor materials in the phosphor wheel are divided into two categories: organic materials and inorganic materials.
  • Organic materials have poor temperature resistance and cannot withstand high-power laser irradiation. At the same time, the materials age quickly under laser irradiation, so it is not suitable.
  • the assembly method of the phosphor wheel is to combine the inorganic phosphor, the substrate and the motor.
  • the inorganic phosphor can be bonded to the substrate by using organic silicon.
  • the inorganic phosphor and the organic The thermal stress of the silica gel does not match. After deformation at high temperature, the inorganic phosphors are likely to be broken due to different deformation variables or mismatched recovery after deformation.
  • FIG. 2 is a first structural schematic diagram of a phosphor wheel in the related art. As shown in FIG. 2, the phosphor wheel includes a substrate 1, an inorganic phosphor sheet 2, and a motor 3.
  • the substrate 1 and the inorganic fluorescent sheet 2 are sleeved on the motor 3 in this order, and the inorganic fluorescent sheet 2 and the substrate 1 are connected by an adhesive 4.
  • the adhesive 4 is evenly coated on the center position of the inorganic fluorescent sheet 2 and one turn near the motor 3. There is a gap between the inorganic fluorescent sheet 2 and the outer edge of the substrate 1.
  • the central portion of the inorganic fluorescent sheet is connected to the substrate with an adhesive. Due to the gap between the inorganic fluorescent sheet and the outer edge of the substrate, the inorganic fluorescent sheet is brittle, the higher the heating temperature, the larger the expansion, and the vibration is higher under high-speed rotation. Large, it is easy to shatter the inorganic fluorescent sheet. The smaller the thickness of the inorganic fluorescent sheet, the greater the risk of fragmentation.
  • FIG. 3 is a second schematic diagram of the structure of the phosphor wheel in the related art
  • FIG. 4 is a schematic structural diagram of the phosphor wheel shown in FIG. 3 after being deformed by heat.
  • another phosphor wheel in the related art includes a substrate 1, an inorganic phosphor sheet 2, and a motor 3.
  • the inorganic fluorescent sheet 2 is ring-shaped or C-shaped, that is, the inorganic fluorescent sheet is all phosphors, or most of the phosphors are phosphors, but a transmission area is left.
  • the substrate 1 is sleeved on the motor 3, and the inorganic fluorescent sheet 2 is attached to the outer edge of the substrate 1.
  • the inorganic fluorescent sheet 2 and the substrate 1 are connected by an adhesive agent 4.
  • the adhesive agent 4 is evenly coated on the outer edge of the substrate 1. There is no gap between the inorganic fluorescent sheet 2 and the substrate 1.
  • the use temperature of the phosphor wheel is limited by the maximum temperature of the adhesive. During the use, the temperature of the surface of the phosphor wheel is lower than the maximum temperature that the adhesive can withstand, and the assembly is not conducive to the adhesive. Cooling.
  • the inorganic fluorescent sheet and the adhesive are deformed by heating, the deformation variables of the two are different. During the heating and cooling process, the inorganic phosphor is easily broken, as shown in FIG. 4.
  • the phosphor wheel of the above two schemes has a higher risk of fragmentation of the inorganic phosphor sheet under high-power laser irradiation. Based on this problem, the phosphor wheel provided in the embodiment of the present application overcomes the inorganic fluorescence in the prior art schemes. Tablets are fragile.
  • FIG. 5 is a schematic structural diagram of a phosphor wheel according to an embodiment of the present application.
  • the phosphor wheel provided in this embodiment includes a substrate 1, an inorganic phosphor sheet 2, a light transmitting plate 5, and a motor 3.
  • the substrate 1 is set on the motor 3, the light-transmitting plate 5 is connected to the substrate 1, and the inorganic fluorescent sheet 2 is clamped and fixed by the light-transmitting plate 5 and the substrate 1.
  • the substrate 1, the inorganic fluorescent sheet 2, and the light-transmitting plate 5 are rotated at high speed by the motor 3.
  • the incident light source is incident on the inorganic fluorescent sheet 2 through the light-transmitting plate 5 and generates fluorescence through the inorganic fluorescent sheet 2.
  • the transparent plate 5 is connected to the substrate 1 through an adhesive, and the inorganic fluorescent sheet 2 is sandwiched in a space surrounded by the adhesive, the transparent plate 5 and the substrate 1.
  • the inorganic fluorescent sheet 2 in this embodiment is mainly made by firing a glass body or a ceramic body with an inorganic fluorescent material, or formed by crystal growth and cutting of the fluorescent material.
  • the high temperature resistance is good, and it is generally used for laser projection with high brightness requirements.
  • the inorganic fluorescent materials are represented by rare earth ion luminescence and rare earth fluorescent materials, which have the advantages of strong absorption capacity and high conversion rate.
  • the narrow-band emission of the central ion of the rare earth complex is conducive to full-color display and has stable physical and chemical properties.
  • Common inorganic fluorescent materials use sulfides of alkaline earth metals (such as ZnS, CaS), aluminates (SrAl2O4, CaAl2O4, BaAl2O4), etc. as the light-emitting matrix, and rare earth lanthanides [ ⁇ (Eu), ⁇ (Sm), ⁇ (Er), neodymium (Nd), etc.] as activators and co-activators.
  • the inorganic fluorescent sheet 2 is ring-shaped or C-shaped.
  • the outer diameter of the inorganic fluorescent sheet 2 is the same as the outer diameter of the substrate 1.
  • the inner diameter of the inorganic fluorescent sheet 2 is not limited, and may be the same as the outer diameter of the motor 3. It may be larger than the outer diameter of the motor 3.
  • the outer diameter of the inorganic fluorescent sheet 2 may also be slightly smaller than the outer diameter of the substrate 1, and the outer diameters of the two are different by 1 mm-2 mm.
  • the thickness of the inorganic fluorescent sheet 2 ranges from 0.1 mm to 0.4 mm, and generally 0.2 mm is selected.
  • the outer diameter of the light-transmitting plate 5 is the same as the outer diameter of the motor 3, that is, the light-transmitting plate 5 is sleeved on the motor like the substrate 1, and the light-transmitting plate 5 is between the light-transmitting plate 5 and the substrate 1.
  • An annular or C-shaped inorganic fluorescent sheet 2 is provided, as shown in FIG. 5.
  • the light-transmitting plate 5 in this embodiment is made of a high-temperature-resistant material having a high transmittance.
  • the light-transmitting plate 5 can be made of high transmittance optical quartz glass (coated film), such as sapphire glass (single-crystal aluminum oxide).
  • the light-transmitting plate of this material has high optical transmittance and low attenuation under laser irradiation.
  • the thickness of the light transmitting plate 5 is 0.2 mm.
  • a light-transmitting plate is added.
  • the light-transmitting plate is disposed above the inorganic fluorescent sheet.
  • the inorganic fluorescent sheet and the substrate are squeezed together by the light-transmitting plate, which limits the thermal deformation of the inorganic fluorescent sheet. , Increase the robustness of the phosphor wheel, greatly reduce the risk of vibration and fragmentation of the inorganic phosphor sheet.
  • the adhesive 4 in this embodiment is an organosilicone or any other adhesive having an adhesive effect, which is not limited in this embodiment.
  • the adhesive 4 is coated on the inner edge of the inorganic fluorescent sheet 2 and / or a circle on the outer edge.
  • the edge of the inorganic fluorescent sheet 2 is fixed to the substrate 1 with an adhesive 4, and the inorganic fluorescent sheet 2 is reinforced by the upper transparent plate 5, or the inorganic fluorescent sheet 2 is sandwiched between the inner and outer edges of the inorganic fluorescent sheet.
  • the adhesive 4 connects the light-transmitting plate 5, the inorganic fluorescent sheet 2, and the substrate 1 together, or the adhesive 4 connects the light-transmitting plate 5 and the substrate 1 together.
  • the light-transmitting plate 5, the inorganic fluorescent sheet 2, and the substrate 1 are connected to the adhesive 4 only at the edge portion. Compared with the existing solution, the coating area of the adhesive 4 is small.
  • the adhesive 4 of this embodiment is not coated on the contact surface between the inorganic fluorescent sheet 2 and the substrate 1, but is distributed at the inner and outer edges of the inorganic fluorescent sheet 2, the laser is avoided. , Thereby avoiding the problem that the use temperature of the phosphor wheel is limited due to the lower temperature of the adhesive wheel than the inorganic phosphor sheet.
  • the substrate 1 in this embodiment may be a transmissive plate or a reflective plate, which is not limited in this embodiment.
  • the substrate 1 is a transmission plate, the generated fluorescence and emitted laser light are directly emitted from the substrate 1;
  • the substrate 1 is a reflective plate, the generated fluorescence and emitted laser light are reflected at the substrate 1 and then emitted through the inorganic fluorescent sheet 2 and the light transmitting plate 5.
  • the laser light source should be prevented from projecting vertically onto the outer edge region of the phosphor wheel.
  • the phosphor wheel provided in the embodiment of the present application includes a substrate, an inorganic fluorescent sheet, a light-transmitting plate, and a motor; the substrate is sleeved on the motor, the light-transmitting plate is connected to the substrate, and the inorganic fluorescent sheet is clamped and fixed by the light-transmitting plate and the substrate; The substrate, the inorganic fluorescent sheet, and the light-transmitting plate rotate at high speed under the driving of a motor.
  • the incident light source is incident on the inorganic fluorescent sheet through the light-transmitting plate, and the fluorescence is generated by the inorganic fluorescent sheet.
  • FIG. 6 is a schematic structural diagram of a phosphor wheel provided by another embodiment of the present application.
  • the phosphor wheel of this embodiment includes a substrate 1, an inorganic phosphor sheet 2, a light transmitting plate 5, and a motor 3.
  • the substrate 1 is sleeved on the motor 3, and the inorganic fluorescent sheet 2 and the light-transmitting plate 5 are sequentially disposed on the substrate 1.
  • the light-transmitting plate 5 is connected to the inorganic fluorescent sheet 2 and the substrate 1 through an adhesive 4.
  • the light-transmitting plate 5 in this embodiment corresponds to the inorganic fluorescent sheet 2.
  • the inorganic fluorescent sheet 2 is ring-shaped or C-shaped
  • the light-transmitting plate 5 is also ring-shaped or C-shaped. among them,
  • the outer diameters of the inorganic fluorescent sheet 2 and the light-transmitting plate 5 are the same as the outer diameter of the substrate.
  • the inner diameter of the light-transmitting plate 5 is smaller than the inner diameter of the inorganic fluorescent sheet 2.
  • the adhesive 4 is coated on the inner edge of the inorganic phosphor sheet 2 and / or the outer edge.
  • the edge of the inorganic fluorescent sheet 2 is fixed to the substrate 1 with an adhesive 4, and the inorganic fluorescent sheet 2 is reinforced by the upper transparent plate 5, or the inorganic fluorescent sheet 2 is sandwiched between the inner and outer edges of the inorganic fluorescent sheet.
  • the adhesive 4 connects the light-transmitting plate 5, the inorganic fluorescent sheet 2, and the substrate 1 together, or the adhesive 4 connects the light-transmitting plate 5 and the substrate 1 together.
  • the light-transmitting plate 5, the inorganic fluorescent sheet 2, and the substrate 1 are connected to the adhesive 4 only at the edge portion.
  • the coating area of the adhesive 4 is small, and the technical effect is the same.
  • the width of the inorganic fluorescent sheet 2 is 5 mm, and the diameter of the laser spot is 1.6 mm. Therefore, the adhesive range of the inner and outer edges of the inorganic fluorescent sheet 2 should be controlled within 1 mm to avoid direct bonding by the laser spot. Agent has failed.
  • the phosphor wheel provided in the embodiment of the present application includes a substrate, an inorganic fluorescent sheet, a light-transmitting plate, and a motor; the substrate is sleeved on the motor; the light-transmitting plate is connected to the substrate through an adhesive; In the space surrounded by the agent, the light-transmitting plate and the substrate, wherein the inorganic fluorescent sheet and the light-transmitting plate are both circular or C-shaped, and the outer diameter of the inorganic fluorescent sheet and the light-transmitting plate are the same as the outer diameter of the substrate.
  • the inner diameter is smaller than the inner diameter of the inorganic fluorescent sheet.
  • the firmness of the phosphor wheel is increased, and the risk of vibration and fragmentation of the inorganic phosphor sheet in the phosphor wheel is greatly reduced. At the same time, the The phosphor wheel is lighter.
  • FIG. 7 is a schematic structural diagram of a phosphor wheel provided in another embodiment of the present application
  • FIG. 8 is a schematic diagram of a distribution of a filled silica gel of the phosphor wheel provided in an embodiment of the present application.
  • the phosphor wheel provided in this embodiment further includes: a silica gel 6 filling.
  • the filled silica gel 6 is located in a gap between the light-transmitting plate 5 and the substrate 1.
  • the filled silica gel 6 is disposed in the gap between the light-transmitting plate 5 and the substrate 1 without the inorganic fluorescent sheet 2.
  • the coating method can be applied in a grid or radial manner, and the light-transmitting layer is uniformly applied to the light-transmitting layer. The space between the plate 5 and the substrate 1 is sufficient.
  • FIG. 8 is a schematic diagram showing the radial distribution of the filled silica gel 6, and the circular shaded part is the inorganic fluorescent sheet 2.
  • cushioning can be further provided by filling the silica gel 6 between the light-transmitting plate 5 and the substrate 1.
  • a clamping member can be added to the periphery of the phosphor wheel to further increase the firmness of the phosphor wheel.
  • FIG. 9 is a schematic structural diagram of a phosphor wheel according to another embodiment of the present application.
  • the phosphor wheel provided in this embodiment includes a substrate 1, an inorganic phosphor sheet 2, a light transmitting plate 5, and a clamping member. 7 and motor 3.
  • the substrate 1 is set on the motor 3, the light-transmitting plate 5 is connected to the substrate 1 through an adhesive 4, and the inorganic fluorescent sheet 2 is sandwiched in a space surrounded by the adhesive 4, the light-transmitting plate 5, and the substrate 1. ;
  • the holding member 7 is used for holding the light-transmitting plate 5 and the substrate 1 together.
  • the inorganic fluorescent sheet 2 is ring-shaped or C-shaped.
  • the outer diameter of the inorganic fluorescent sheet 2 is the same as the outer diameter of the substrate 1.
  • the inner diameter of the inorganic fluorescent sheet 2 is not limited, and may be the same as the outer diameter of the motor 3. It may be larger than the outer diameter of the motor 3.
  • the light-transmitting plate 5 is sleeved on the motor like the substrate 1, and a circular or C-shaped inorganic fluorescent sheet 2 is disposed between the light-transmitting plate 5 and the substrate 1.
  • the light transmitting plate 5 may also be ring-shaped or C-shaped.
  • the outer diameters of the inorganic fluorescent sheet 2 and the transparent plate 5 are the same as the outer diameter of the substrate.
  • the inner diameter of the transparent plate 5 is smaller than the inner diameter of the inorganic fluorescent sheet 2, that is, the transparent plate 5. To cover the inorganic fluorescent sheet 2.
  • the clamping member 7 is wrapped around the outer edges of the transparent plate 5 and the substrate 1.
  • the clamping member 7 is made of an elastic material, and the inner diameter of the clamping member 7 is less than or equal to the outer diameter of the transparent plate or substrate.
  • the clamping member 7 is a rubber ring.
  • the number of the clamping members 7 is multiple, and are evenly distributed on the outer edges of the light-transmitting plate 5 and the substrate 1.
  • the adhesive 4 can be coated only on the inner edges of the inorganic fluorescent sheet 2, as shown in FIG.
  • the inner and outer edges of the inorganic fluorescent sheet 2 are coated with an adhesive 4, and a clamping member 7 is additionally provided.
  • the light transmitting plate 5, the inorganic fluorescent sheet 2 and the substrate 1 are pressed together by the clamping member 7 To increase the stability of the phosphor wheel. It should be noted that if the light-transmitting plate 5 is annular or C-shaped, the width of the light-transmitting plate 5 is greater than the crimping width of the clamping member 7.
  • this embodiment also provides a phosphor wheel. No additional clamping member is needed, and only the structure of the light-transmitting plate is improved.
  • the embodiment is provided below with reference to the accompanying drawings. The phosphor wheel is explained in detail.
  • FIG. 10 is a schematic structural diagram of a phosphor wheel according to another embodiment of the present application.
  • the phosphor wheel provided in this embodiment includes a substrate 1, an inorganic phosphor sheet 2, a light transmitting plate 5, and a motor 3.
  • the substrate 1 is set on the motor 3, and the light-transmitting plate 5 is connected to the substrate 1 through the adhesive 4.
  • the inorganic fluorescent sheet 2 is sandwiched in a space surrounded by the adhesive 4, the light-transmitting plate 5, and the substrate 1. ;
  • the light-transmitting plate 5 in this embodiment is different from the above embodiment. See FIG. 10.
  • the light-transmitting plate 5 is a cover-shaped cover structure.
  • the inner diameter of the outer edge of the cover structure is the same as the outer diameter of the substrate 1.
  • the agent is connected to the outer edge of the substrate 1.
  • a cover-shaped light-transmitting plate is used.
  • the light-transmitting plate is fixed to the substrate by an adhesive, and the inorganic fluorescent sheet is covered on the substrate. This enhances the overall robustness of the phosphor wheel and greatly reduces the inorganic fluorescence in the phosphor wheel Risk of chipping and chipping.
  • An embodiment of the present application further provides a laser light source, including a laser and the phosphor wheel according to any one of the foregoing embodiments. among them,
  • the laser is arranged on the side of the light transmitting plate of the phosphor wheel; the incident laser light emitted by the laser is reflected or transmitted by the substrate of the phosphor wheel to generate fluorescence and outgoing laser light.
  • the laser in this embodiment is a blue laser.
  • the blue laser light emitted by the blue laser passes through the light transmitting plate of the phosphor wheel and the inorganic fluorescent plate in turn to generate fluorescence, and the fluorescence and blue laser light are emitted through the substrate.
  • the substrate in this embodiment may be a transmissive plate or a reflective plate, which is not limited in this embodiment.
  • the substrate is a transmissive plate, the generated fluorescence and emitted laser light are directly emitted from the substrate;
  • the substrate is a reflective plate
  • the generated fluorescence and emitted laser light are reflected at the substrate, and then emitted through the inorganic fluorescent sheet and the light transmitting plate.
  • the blue light laser should be prevented from projecting vertically onto the outer edge region of the phosphor wheel.
  • An embodiment of the present application further provides a laser projection device, which includes the laser light source, the optical machine, the lens, and the projection screen in the above embodiments. among them,
  • the laser light source illuminates the light machine and is projected by the lens onto the projection screen.

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Abstract

一种荧光粉轮（13）、激光光源及激光投影设备。荧光粉轮（13）包括基板（1）、无机荧光片（2）、透光板（5）和马达（3）；基板（1）套设在马达（3）上，透光板（5）与基板（1）连接，无机荧光片（2）被透光板（5）与基板（1）夹持固定；基板（1）、无机荧光片（2）和透光板（5）在马达（3）的带动下高速旋转，入射光通过透光板（5）入射到无机荧光片（2）上，经无机荧光片（2）产生荧光。通过将无机荧光片（2）夹持固定在透光板（5）与基板（1）之间，增加了荧光粉轮（13）的牢固性，降低了荧光粉轮（13）中的无机荧光片（2）振动碎裂的风险。

Description

荧光粉轮、激光光源及激光投影设备
本申请要求于2018年09月30日提交中国专利局、申请号为201811156801.1、申请人为青岛海信激光显示股份有限公司、发明名称为“荧光粉轮、激光光源及激光投影设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种荧光粉轮、激光光源及激光投影设备。
背景技术
基于激光光源的激光显示技术因其色域广、寿命长、亮度高、能耗低，具有传统光源无可比拟的先天优势，被誉为继黑白显示、彩色显示和数字显示之后的第四代“继承者”。
发明内容
本申请提供一种荧光粉轮、激光光源及激光投影设备，以克服现有荧光粉轮中无机荧光片易碎的问题。
本申请的第一方面提供一种荧光粉轮，包括：基板、无机荧光片、透光板和马达；所述基板套设在所述马达上，所述透光板与所述基板连接，所述无机荧光片被所述透光板与所述基板夹持固定；
所述基板、所述无机荧光片和所述透光板在所述马达的带动下高速旋转，入射光源通过所述透光板入射到所述无机荧光片上，经所述无机荧光片产生荧光。
一种可能的实现方式中，所述透光板通过粘接剂与所述基板连接，所述无机荧光片夹设在由所述粘接剂、所述透光板和所述基板围成的空间内。
在一种可能的实现方式中，所述无机荧光片为环形或C形，所述无机荧 光片的外径与所述基板的外径相同。
在一种可能的实现方式中，所述透光板为环形或C形，所述透光板的外径与所述基板的外径相同，所述透光板的内径小于所述无机荧光片的内径。
在一种可能的实现方式中，所述透光板为罩形盖板结构。
在一种可能的实现方式中，所述荧光粉轮还包括填充硅胶，所述填充硅胶位于所述透光板与所述基板之间的空隙内。
在一种可能的实现方式中，所述荧光粉轮还包括夹持件，所述夹持件用于将所述透光板和所述基板夹持一体。
在一种可能的实现方式中，所述夹持件包覆在所述透光板和所述基板的外边缘一圈。
在一种可能的实现方式中，所述夹持件的数量为多个，且均匀分布在所述透光板和所述基板的外边缘。
在一种可能的实现方式中，所述透光板采用蓝宝石玻璃制成。
本申请的第二方面提供一种激光光源，包括激光器以及如本申请第一方面任一项所述的荧光粉轮；所述激光器设置在所述荧光粉轮的透光板一侧；
所述激光器发出的入射激光被所述荧光粉轮的基板反射或透射后，生成荧光和出射激光。
本申请的第三方面提供一种激光投影设备，包括如本申请第二方面所述的激光光源、光机、镜头和投影屏幕，所述激光光源为所述光机提供照明，并由所述镜头投影至所述投影屏幕。
本申请实施例提供一种荧光粉轮、激光光源及激光投影设备。荧光粉轮包括基板、无机荧光片、透光板和马达；基板套设在马达上，透光板与基板连接，无机荧光片被透光板与基板夹持固定；基板、无机荧光片和透光板在马达的带动下高速旋转，入射光源通过所述透光板入射到所述无机荧光片上，经所述无机荧光片产生荧光。通过将无机荧光片夹持固定在透光板与基板之间，增加了荧光粉轮的牢固性，大大降低了荧光粉轮中的无机荧光片振动碎裂的风险。
附图说明
图1为相关技术中激光光源显示系统的结构示意图；
图2为相关技术中荧光粉轮的结构示意图一；
图3为相关技术中荧光粉轮的结构示意图二；
图4为图3所示荧光粉轮受热变形后的结构示意图；
图5为本申请一实施例提供的荧光粉轮的结构示意图；
图6为本申请另一实施例提供的荧光粉轮的结构示意图；
图7为本申请又一实施例提供的荧光粉轮的结构示意图；
图8为本申请一实施例提供的荧光粉轮的填充硅胶的分布示意图；
图9为本申请再一实施例提供的荧光粉轮的结构示意图；
图10为本申请再一实施例提供的荧光粉轮的结构示意图。
附图标记说明：
11-蓝色激光器；
12-准直透镜；
13-荧光粉轮；
14-光机照明设备；
15-镜头成像设备；
16-显示屏幕；
1-基板；
2-无机荧光片；
3-马达；
4-粘接剂；
5-透光板；
6-填充硅胶；
7-夹持件。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应当理解，本文中使用的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请中的“和/或”，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。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请的说明书中通篇提到的“一实施例”或“另一实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在本实施例中”或“在一些实施例中”未必一定指相同的实施例。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
激光显示技术主要有三基色纯色激光、荧光粉+蓝光、LED+激光三种技术。绝大多数激光光源显示系统采用荧光粉+蓝光的显示技术，该技术是采用单色激光(即蓝光激光)结合含有黄红绿等荧光粉的多种颜色荧光粉轮旋转而产生红绿蓝三基色。
图1为相关技术中激光光源显示系统的结构示意图。如图1所示，显示系统包括蓝色激光器11、准直透镜12、荧光粉轮13、光机照明设备14、镜头成像设备15及显示屏幕16，基本工作原理为：蓝色激光器11发出的蓝色激光打在高速旋转的荧光粉轮13上，荧光粉轮13上附有受激光器11激发能发出不同于蓝色激光颜色光的荧光体，能够按照时序产生投影显示所需要的基色光源，基色光源再经过光机照明设备14和镜头成像设备15最终在显示屏幕16上合成彩色画面。
荧光粉轮是激光投影的关键部件，荧光粉轮通过连接在其轴心上的马达驱动而高速旋转。荧光粉轮中的荧光材料分为有机材料和无机材料两大类，有机材料因其中的有机溶剂耐温性较差，无法承受高功率激光照射，同时在激光照射下材料老化较快，因此不宜用于高功率激光显示中；无机材料主要分为玻璃体和陶瓷体两类其耐高温性能好，是高功率激光显示的优选材料。
荧光粉轮的装配方式是将无机荧光体、基板与马达相结合，可采用有 机硅胶将无机荧光体粘接到基板上，使用此装配方式的荧光粉轮在使用过程中，无机荧光体与有机硅胶的热应力不匹配，高温形变后，由于形变量不同或者形变后的恢复量不匹配，易造成无机荧光体碎裂。
在介绍本申请实施例提供的荧光粉轮之前，首先结合附图对本领域现有的荧光粉轮的机构作如下介绍。
图2为相关技术中荧光粉轮的结构示意图一，如图2所示，荧光粉轮包括基板1、无机荧光片2和马达3。
其中，基板1和无机荧光片2依次套设在马达3上，无机荧光片2与基板1通过粘接剂4连接。粘接剂4均匀涂覆在无机荧光片2的中心位置、靠近马达3的一圈，无机荧光片2与基板1外边缘存在缝隙。
上述无机荧光片的中心部分与基板通过粘接剂连接，由于无机荧光片与基板的外边缘存在缝隙，无机荧光片质脆，受热温度越高，膨胀越大，在高速旋转的情况下振动较大，容易将无机荧光片振碎，无机荧光片厚度越小，碎裂的风险越大。
图3为相关技术中荧光粉轮的结构示意图二，图4为图3所示荧光粉轮受热变形后的结构示意图。
如图3所示，相关技术中另一种荧光粉轮包括基板1、无机荧光片2和马达3。
其中，无机荧光片2为环形或者C形，即无机荧光片全部为荧光粉，或者大部分为荧光粉，但留有透射区。
基板1套设在马达3上，无机荧光片2贴合在基板1的外边缘，无机荧光片2与基板1通过粘接剂4连接，粘接剂4均匀涂覆在基板1的外边缘一圈，无机荧光片2与基板1之间没有间隙。
上述荧光粉轮的使用温度受到粘接剂最高温度的限制，在使用过程中，荧光粉轮表面温度要小于粘接剂的能够承受的最高温度，且该装配形式下，不利于粘接剂的散热。
另外，由于无机荧光片与粘接剂受热变形，两者的形变量不同，在受热及冷却过程中，易造成无机荧光体碎裂，可参见图4。
由此可见，上述两种方案的荧光粉轮在高功率激光照射下无机荧光片碎裂的风险较大，基于此问题，本申请实施例提供的荧光粉轮克服了现有技术方案中无机荧光片易碎裂的问题。
下面以具体地实施例对本申请的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。
图5为本申请一实施例提供的荧光粉轮的结构示意图，如图5所示，本实施例提供的荧光粉轮包括：基板1、无机荧光片2、透光板5和马达3。
其中，基板1套设在马达3上，透光板5与基板1连接，无机荧光片2被透光板5与基板1夹持固定；
基板1、无机荧光片2和透光板5在马达3的带动下高速旋转，入射光源通过透光板5入射到无机荧光片2上，经无机荧光片2产生荧光。
在一些实施例中，透光板5通过粘接剂与基板1连接，无机荧光片2夹设在由粘接剂、透光板5和基板1围成的空间内。
本实施例中的无机荧光片2主要由玻璃体或者陶瓷体与无机荧光材料烧制而成，或者通过荧光材料晶体生长切割形成，其耐高温性能好，普遍用于高亮度要求的激光投影。
其中，无机荧光材料的代表为稀土离子发光及稀土荧光材料，其优点是吸收能力强，转换率高，稀土配合物中心离子的窄带发射有利于全色显示，且物理化学性质稳定。常见的无机荧光材料是以碱土金属的硫化物(如ZnS、CaS)铝酸盐(SrAl2O4,CaAl2O4,BaAl2O4)等作为发光基质，以稀土镧系元素[铕(Eu)、钐(Sm)、铒(Er)、钕(Nd)等]作为激活剂和助激活剂。
本实施例中，无机荧光片2为环形或C形，无机荧光片2的外径与基板1的外径相同，无机荧光片2的内径不作任何限定，可以与马达3的外径相同，也可以大于马达3的外径。
在一些实施例中，无机荧光片2的外径也可以略小于基板1的外径，两者外径相差1mm-2mm。
无机荧光片2的厚度范围在0.1mm-0.4mm之间，一般选择0.2mm。
本实施例中，透光板5的外径与马达3的外径相同，也就是说，透光板5同基板1一样，是套设在马达上的，透光板5与基板1之间设置有环形或者C形的无机荧光片2，可参见图5。
本实施例中的透光板5采用具有高透过率的耐高温材料制成。
在一些实施例中，透光板5可采用高透过率光学石英玻璃(可镀膜)制成，例如蓝宝石玻璃(单晶三氧化二铝)。该材质的透光板在激光照射 下具有较高的光学透过率、衰减较小。
在一些实施例中，透光板5的厚度在0.2mm。
本实施例的荧光粉轮增设了透光板，该透光板设置在无机荧光片的上方，通过透光板将无机荧光片和基板挤压在一起，限制了无机荧光片的受热变形，同时，增加了荧光粉轮的牢固性，大大降低了无机荧光片振动碎裂的风险。
本实施例的粘接剂4为有机硅胶或其他任意具有粘接效果的粘接剂，对此本实施例不作任何限定。
本实施例中粘接剂4涂覆在无机荧光片2的内边缘，和/或，外边缘的一圈。
无机荧光片2的边缘通过粘接剂4固定与基板1上，并通过上层的透光板5将无机荧光片2加固，或者，无机荧光片2夹设在由无机荧光片内外边缘的粘接剂4、基板1和透光板5构成的空间内。
换句话说，粘接剂4将透光板5、无机荧光片2以及基板1连接一体，或者，粘接剂4将透光板5以及基板1连接一体。
按照上述任意涂覆方式，透光板5、无机荧光片2、基板1只在边缘部分与粘接剂4连接，与现有方案相比，粘接剂4的涂覆面积小。
如图5所示，由于本实施例的粘接剂4并未涂覆在无机荧光片2与基板1的接触面上，而是分布在无机荧光片2的内外边缘处，因此避开了激光的照射点，从而避免了荧光粉轮由于粘接剂承受温度较无机荧光片低而限制了荧光粉轮的使用温度的问题。
本实施例的基板1可以是透射板，也可以是反射板，对此本实施例不作任何限定。
若基板1为透射板，则生成的荧光和出射激光直接从基板1处出射；
若基板1为反射板，则生成的荧光和出射激光在基板1处反射，随后再经过无机荧光片2和透光板5出射。本领域技术人员可以理解，为了区分入射光线和出射光线，应避免激光光源垂直投射到荧光粉轮的外边缘区域。
本申请实施例提供的荧光粉轮，包括基板、无机荧光片、透光板和马达；基板套设在马达上，透光板与基板连接，无机荧光片被透光板与基板夹持固定；基板、无机荧光片和透光板在马达的带动下高速旋转，入射光 源通过透光板入射到无机荧光片上，经无机荧光片产生荧光。通过将无机荧光片夹持固定在透光板与基板之间，增加了荧光粉轮的牢固性，大大降低了荧光粉轮中的无机荧光片振动碎裂的风险。
图6为本申请另一实施例提供的荧光粉轮的结构示意图，如图6所示，本实施例的荧光粉轮包括：基板1、无机荧光片2、透光板5和马达3。
其中，基板1套设在马达3上，在基板1上依次设置无机荧光片2和透光板5，透光板5通过粘接剂4与无机荧光片2和基板1连接。
与上述实施例不同的是，本实施例中的透光板5与无机荧光片2对应，当无机荧光片2为环形或者C形时，透光板5也为环形或C形。其中，
无机荧光片2和透光板5的外径均与基板的外径相同，透光板5的内径小于无机荧光片2的内径，也就是说，透光板5要覆盖住无机荧光片2。
在一些实施例中，粘接剂4涂覆在无机荧光片2的内边缘，和/或，外边缘的一圈。无机荧光片2的边缘通过粘接剂4固定与基板1上，并通过上层的透光板5将无机荧光片2加固，或者，无机荧光片2夹设在由无机荧光片内外边缘的粘接剂4、基板1和透光板5构成的空间内。换句话说，粘接剂4将透光板5、无机荧光片2以及基板1连接一体，或者，粘接剂4将透光板5以及基板1连接一体。
按照上述涂覆方式，透光板5、无机荧光片2、基板1只在边缘部分与粘接剂4连接，与现有方案相比，粘接剂4的涂覆面积小，其技术效果同上述实施例，可参见上述实施例，此处不再赘述。
本实施例的无机荧光片2的宽度在5mm，激光光斑的直径为1.6mm，为此无机荧光片2内外边缘的粘接剂范围应控制在1mm内，避免激光光斑直射粘接剂造成粘接剂失效。
本申请实施例提供的荧光粉轮，包括基板、无机荧光片、透光板和马达；基板套设在马达上，透光板通过粘接剂与基板连接，无机荧光片夹设在由粘接剂、透光板和基板围成的空间内，其中，无机荧光片与透光板均为环形或者C形，无机荧光片和透光板的外径与基板的外径相同，透光板的内径小于无机荧光片的内径。通过将无机荧光片夹持固定在透光板与基板之间，增加了荧光粉轮的牢固性，大大降低了荧光粉轮中的无机荧光片振动碎裂的风险，同时，本实施例提供的荧光粉轮重量更轻。
图7为本申请又一实施例提供的荧光粉轮的结构示意图，图8为本申 请一实施例提供的荧光粉轮的填充硅胶的分布示意图。
在如图5所示的荧光粉轮的基础上，如图7所示，本实施例提供的荧光粉轮，还包括：填充硅胶6。
填充硅胶6位于透光板5与基板1之间的空隙内。
在一些实施例中，填充硅胶6设置在透光板5与基板1之间的没有无机荧光片2的空隙内，涂覆方式可以按照网格状或者放射状进行涂覆，均匀涂覆在透光板5与基板1之间的空隙即可。图8示出了填充硅胶6呈放射状分布的示意图，图中环形阴影部分为无机荧光片2。
考虑到无机荧光片2的受热形变，通过在透光板5与基板1之间的填充硅胶6可进一步提供缓冲。在上述各实施例的基础上，由于荧光粉轮工作时处于高速旋转状态，可在荧光粉轮的外围增设夹持件，从而进一步增加荧光粉轮的牢固性。下面结合附图对本实施例提供的荧光粉轮做详细说明。
图9为本申请再一实施例提供的荧光粉轮的结构示意图，如图9所示，本实施例提供的荧光粉轮包括：基板1、无机荧光片2、透光板5、夹持件7和马达3。
其中，基板1套设在马达3上，透光板5通过粘接剂4与基板1连接，无机荧光片2夹设在由粘接剂4、透光板5和基板1围成的空间内；
夹持件7用于将透光板5和基板1夹持一体。
本实施例中，无机荧光片2为环形或C形，无机荧光片2的外径与基板1的外径相同，无机荧光片2的内径不作任何限定，可以与马达3的外径相同，也可以大于马达3的外径。
在一种可能的实现方式中，透光板5同基板1一样，是套设在马达上的，透光板5与基板1之间设置有环形或者C形的无机荧光片2，可参见图9。
在另一种可能的实现方式中，透光板5也可以是环形或C形。同图6所示的荧光粉轮结构，无机荧光片2和透光板5的外径均与基板的外径相同，透光板5的内径小于无机荧光片2的内径，即透光板5要覆盖住无机荧光片2。
对于本实施例中增设的夹持件，有如下两种实现方式：
在一种可能的实现方式中，夹持件7包覆在透光板5和基板1的外边缘一圈。在一些实施例中，夹持件7采用弹性材质制成，夹持件7的内径小于等于透光板或基板的外径。示例性的，夹持件7为橡胶圈。
在另一种可能的实现方式中，夹持件7的数量为多个，且均匀分布在透光板5和基板1的外边缘。
由于本实施例在透光板5、无机荧光片2和基板1的外边缘设置有夹持件7，因此可以仅在无机荧光片2的内边缘涂覆粘接剂4，可参见图9。
或者，
在无机荧光片2的内边缘和外边缘涂覆粘接剂4的基础上，加设夹持件7，通过夹持件7将透光板5、无机荧光片2和基板1挤压在一起，增加荧光粉轮的稳定性。需要指出的是，若透光板5为环形或C形，则透光板5的宽度要大于夹持件7的压接宽度。
除了通过加设夹持件进一步加固荧光粉轮之外，本实施例还提供一种荧光粉轮，无需增设夹持件，仅对透光板的结构作出改进，下面结合附图对本实施例提供的荧光粉轮进行详细说明。
图10为本申请再一实施例提供的荧光粉轮的结构示意图，如图10所示，本实施例提供的荧光粉轮包括：基板1、无机荧光片2、透光板5和马达3。
其中，基板1套设在马达3上，透光板5通过粘接剂4与基板1连接；无机荧光片2夹设在由粘接剂4、透光板5和基板1围成的空间内；
本实施例中的透光板5不同于上述实施例，可参见图10，透光板5为罩形盖板结构，盖板结构外缘处的内径与基板1的外径相同，通过粘接剂与基板1的外缘连接。
本实施例采用罩形透光板，透光板通过粘接剂与基板固定，将无机荧光片罩于基板上，增强了荧光粉轮整体的牢固性，大大降低了荧光粉轮中的无机荧光片振动碎裂的风险。
本申请实施例还提供一种激光光源，包括激光器以及上述任一实施例所述的荧光粉轮。其中，
激光器设置在荧光粉轮的透光板一侧；激光器发出的入射激光被荧光粉轮的基板反射或透射后，生成荧光和出射激光。
本实施例的激光器为蓝色激光器，蓝色激光器发出的蓝色激光依次穿 过荧光粉轮的透光板和无机荧光片生成荧光，荧光和蓝色激光再通过基板出射。
需要指出的是，本实施例的基板可以是透射板，也可以是反射板，对此本实施例不作任何限定。
若基板为透射板，则生成的荧光和出射激光直接从基板处出射；
若基板为反射板，则生成的荧光和出射激光在基板处反射，随后再经过无机荧光片和透光板出射。本领域技术人员可以理解，为了区分入射光线和出射光线，应避免蓝光激光器垂直投射到荧光粉轮的外边缘区域。
本申请实施例还提供一种激光投影设备，包括上述实施例中的激光光源、光机、镜头和投影屏幕。其中，
激光光源为光机提供照明，并由镜头投影至投影屏幕。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (12)

  1. 一种荧光粉轮，其特征在于，包括：基板、无机荧光片、透光板和马达；所述基板套设在所述马达上，所述透光板与所述基板连接，所述无机荧光片被所述透光板与所述基板夹持固定；
    所述基板、所述无机荧光片和所述透光板在所述马达的带动下高速旋转，入射光源通过所述透光板入射到所述无机荧光片上，经所述无机荧光片产生荧光。
  2. 根据权利要求1所述的荧光粉轮，其特征在于，所述透光板通过粘接剂与所述基板连接，所述无机荧光片夹设在由所述粘接剂、所述透光板和所述基板围成的空间内。
  3. 根据权利要求1或2所述的荧光粉轮，其特征在于，所述无机荧光片为环形或C形，所述无机荧光片的外径与所述基板的外径相同。
  4. 根据权利要求3所述的荧光粉轮，其特征在于，所述透光板为环形或C形，所述透光板的外径与所述基板的外径相同，所述透光板的内径小于所述无机荧光片的内径。
  5. 根据权利要求3所述的荧光粉轮，其特征在于，所述透光板为罩形盖板结构。
  6. 根据权利要求1-5任一项所述的荧光粉轮，其特征在于，所述荧光粉轮还包括填充硅胶，所述填充硅胶位于所述透光板与所述基板之间的空隙内。
  7. 根据权利要求1-6任一项所述的荧光粉轮，其特征在于，所述荧光粉轮还包括夹持件，所述夹持件用于将所述透光板和所述基板夹持一体。
  8. 根据权利要求7所述的荧光粉轮，其特征在于，所述夹持件包覆在所述透光板和所述基板的外边缘一圈。
  9. 根据权利要求7或8所述的荧光粉轮，其特征在于，所述夹持件的数量为多个，且均匀分布在所述透光板和所述基板的外边缘。
  10. 根据权利要求1-9任一项所述的荧光粉轮，其特征在于，所述透光板采用蓝宝石玻璃制成。
  11. 一种激光光源，其特征在于，包括激光器以及如权利要求1-10任一项所述的荧光粉轮；所述激光器设置在所述荧光粉轮的透光板一侧；
    所述激光器发出的入射激光被所述荧光粉轮的基板反射或透射后，生成 荧光和出射激光。
  12. 一种激光投影设备，其特征在于，包括如权利要求11所述的激光光源、光机、镜头和投影屏幕，所述激光光源为所述光机提供照明，并由所述镜头投影至所述投影屏幕。
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