WO2019200980A1 - Systèmes de source de lumière et appareil de projection - Google Patents

Systèmes de source de lumière et appareil de projection Download PDF

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Publication number
WO2019200980A1
WO2019200980A1 PCT/CN2019/070527 CN2019070527W WO2019200980A1 WO 2019200980 A1 WO2019200980 A1 WO 2019200980A1 CN 2019070527 W CN2019070527 W CN 2019070527W WO 2019200980 A1 WO2019200980 A1 WO 2019200980A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
color laser
source system
wavelength conversion
Prior art date
Application number
PCT/CN2019/070527
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English (en)
Chinese (zh)
Inventor
郭祖强
杜鹏
李屹
Original Assignee
深圳光峰科技股份有限公司
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Publication of WO2019200980A1 publication Critical patent/WO2019200980A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • 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
    • 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
    • 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
    • G03B21/208—Homogenising, shaping of the illumination light

Definitions

  • the present invention relates to the field of projection technologies, and in particular, to a light source system and a projection device.
  • the laser fluorescent light source technology is a technique for exciting a phosphor to generate a laser by using excitation light.
  • a blue laser is used as the excitation light
  • the phosphor may be a yellow phosphor, a green phosphor or a red phosphor, and the cost of the blue laser. It is relatively low, the electro-optical conversion efficiency is high, and the excitation efficiency of the phosphor is high.
  • the fluorescence spectrum is wide and the color purity is low, so it cannot directly satisfy the requirements of the wide color gamut. In order to improve the color purity, it is usually carried out using a filter. Filtering, but this way will cause a large loss of light.
  • the use of a hybrid light source of fluorescence and laser can achieve better color purity, and can use the two mixed light to eliminate coherence to maintain an acceptable cost. At the same time, it brings some difficulties to the optical design. Because of the overlapping bands between the fluorescence spectrum and the laser spectrum, the combination of the two will result in a large loss of light efficiency.
  • the present invention provides a light source system capable of realizing a small loss of laser and fluorescent light combined, and the present illumination also provides a light source system. Projection equipment.
  • a light source system including
  • a supplemental light source for emitting supplemental light, the supplemental light comprising at least a second color laser
  • a wavelength conversion device for generating fluorescence under excitation of a portion of the first color laser
  • a first guiding device configured to guide another portion of the first color laser to be combined with the complementary light to obtain mixed light
  • the first guiding device comprising a converging lens, the mixed light is emitted after convergence by the converging lens ;
  • the second guiding device comprises:
  • a spectroscopic filter disposed between the excitation light source and the wavelength conversion device for guiding the first color laser to the wavelength conversion device and reflecting the fluorescence;
  • a first optical lens disposed at an out-of-focus position of the spectroscopic filter to emit fluorescence, wherein the mixed light emitted by the first guiding device is concentrated near the first optical lens, and the fluorescence of the spectroscopic filter is emitted The mixed light emitted by the first guiding device is emitted after being combined at the first optical lens.
  • the light source system further includes a light homogenizing device for homogenizing the light emitted by the first optical lens.
  • the mixed light incident to the light homogenizing device coincides with the maximum incident angle of the fluorescence.
  • the first guiding device further includes:
  • At least one mirror for guiding the other portion of the first color laser
  • a light combining unit configured to combine the complementary light with the first color laser light emitted by the at least one mirror.
  • the second guiding device further includes a collecting lens group disposed adjacent to a surface of the wavelength converting device, the collecting lens group is configured to condense light incident on a surface of the wavelength converting device, and to the wavelength converting device The emitted light is collected.
  • the wavelength conversion device is provided with a wavelength conversion material for generating a color fluorescence, the light separation filter for guiding a part of the first color laser light to the wavelength conversion device, and guiding another portion of the first color laser Incident to the first guiding device and reflecting fluorescence generated by the wavelength converting device such that the fluorescent light and the mixed light emitted from the first optical lens are emitted to the light homogenizing device along the same optical path.
  • the wavelength conversion device is provided with:
  • Light processing area including:
  • the first color laser light emitted by the first segment is incident on the first guiding device, and the first segment of the incident light and the outgoing light are at least Part of the optical path separation;
  • a second segment for generating at least one color fluorescence under excitation of the first color laser, the second segment reflecting the generated fluorescence to the second guiding device;
  • a driving device that drives the wavelength conversion device to perform periodic rotation such that the first segment and the second segment are alternately located on an optical path of the first color laser.
  • a light homogenizing device of the light source system and the first optical lens are respectively disposed at two sides of the wavelength conversion device, and light emitted by the first optical lens is incident to the black light through the filter region.
  • Leveling device is respectively disposed at two sides of the wavelength conversion device, and light emitted by the first optical lens is incident to the black light through the filter region.
  • the first section is provided with a reflection portion, and the reflection portion includes a reflection surface for reflecting the first color laser light.
  • an angle between the reflecting surface and a plane of the second section is at a predetermined angle, and the first color laser is irradiated to the reflecting surface in a direction of a central axis of the collecting lens group.
  • a substrate of the wavelength conversion device includes a first surface and a second surface disposed opposite to each other, and the reflective portion is disposed on the first surface and the Between the second surfaces, the reflective surface is a slope connected between the first surface and the second surface.
  • the first section is provided with a mounting groove, the reflecting portion is at least partially received in the mounting groove, and the reflecting surface is at a predetermined angle with the surface of the second section, the reflecting surface
  • the emitted first color laser light sequentially passes through the collecting lens group and the spectroscopic filter in the second guiding device and is incident on the first guiding device, and the incident light and the outgoing light of the reflecting surface are in the The optical path separation in the collection lens group.
  • the first section is provided with a mounting groove, the reflecting portion is at least partially received in the mounting groove, and the reflecting surface is parallel to the surface of the second segment, the first color laser edge
  • the direction of the central axis of the collecting lens group is irradiated onto the reflecting surface, and the incident light of the reflecting surface is separated from the optical path of the outgoing light in the collecting lens group.
  • a projection apparatus comprising the light source system of any of the above.
  • the light source system provided by the invention combines the difference between the laser and the fluorescence optical expansion amount, and can realize the color display of the wide color gamut and the high optical efficiency.
  • FIG. 1 is a schematic structural diagram of a light source system according to a first embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a substrate in the wavelength conversion device shown in FIG. 1.
  • FIG. 2 is a schematic structural view of a substrate in the wavelength conversion device shown in FIG. 1.
  • FIG. 3 is a schematic structural view of the first optical lens shown in FIG. 1.
  • FIG. 3 is a schematic structural view of the first optical lens shown in FIG. 1.
  • FIG. 4 is a schematic view showing the angular distribution of the mixed light and fluorescence beams shown in FIG. 1.
  • FIG. 5 is a schematic structural diagram of a light source system according to a second embodiment of the present invention.
  • Fig. 6 is a schematic structural view of the wavelength conversion device shown in Fig. 5.
  • FIG. 7 is a schematic structural diagram of a light source system according to a third embodiment of the present invention.
  • Fig. 8 is a schematic structural view of the wavelength conversion device shown in Fig. 7.
  • FIG. 9 is a schematic structural diagram of a light source system according to a fourth embodiment of the present invention.
  • Fig. 10 is a schematic structural view of the wavelength conversion device shown in Fig. 9.
  • FIG. 11 is a schematic structural diagram of a light source system according to a fifth embodiment of the present invention.
  • the combination of the laser and the fluorescence optical spread amount is combined to achieve color display of a wide color gamut and high optical efficiency.
  • the light source system can be applied to a projection device, which is beneficial to improving the screen display quality and product competitiveness of the projection device.
  • the projection device may include an LCD (Liquid Crystal Display), a LCOS (Liquid Crystal on Silicon), or a DMD (Digital Mirror Device, Digital Micromirror Device). Digital micromirror element) and other spatial light modulators.
  • FIG. 1 is a schematic structural diagram of a light source system 100 according to a first embodiment of the present invention.
  • the light source system 100 includes an excitation light source 110, a supplemental light source 120, a first guiding device 140, a wavelength conversion device 150, a second guiding device 160, and a light homogenizing device 170.
  • the excitation light source 110 is used to emit a first color laser
  • the supplementary light source 120 is used to emit supplemental light
  • the supplementary light includes at least a second color laser
  • the wavelength conversion device 150 is configured to generate fluorescence under excitation of a portion of the first color laser.
  • the first guiding device 140 is configured to guide another portion of the first color laser to be combined with the complementary light to obtain mixed light, and the first guiding device 140 includes a converging lens 149, and the mixed light is emitted by the convergence lens 149
  • the second guiding device 160 is configured to guide the fluorescent light, including the spectral filter 161 and the first optical lens 166.
  • the spectral filter 161 is disposed between the excitation light source 110 and the wavelength conversion device 150 for guiding the first color laser to the wavelength conversion device 150, and reflecting the fluorescence to the first optical lens 166; the first optical lens The 166 is disposed at a defocusing position where the spectroscopic filter 161 emits fluorescence, and the mixed light emitted by the first guiding device 140 is concentrated near the first optical lens 166, and the fluorescence emitted by the spectral filter 161 is mixed with the first guiding device 140.
  • the light exits after being combined at the first optical lens 166; the light homogenizing device 170 is used to homogenize the light emitted by the first optical lens 166.
  • the excitation light source 110 and the supplemental light source 120 emit laser light of a different color.
  • the excitation light source 110 includes an illuminant 111 for generating a first color laser and a first shimming device 112 for averaging the first color laser.
  • the excitation light source 110 may be a blue light source that emits a blue laser light. It can be understood that the excitation light source 110 is not limited to the blue light source, and the excitation light source 110 may also be a purple light source, a red light source or a green light source.
  • the illuminant 111 is a blue laser for emitting a blue laser light as the first color laser. It can be understood that the illuminant 111 can include one or two lasers or an array of lasers, and the number of lasers can be selected according to actual needs.
  • the first light homogenizing device 112 is configured to dim the first color laser light and then exit to the second guiding device 160.
  • the first light homogenizing device 112 is a light concentrating rod.
  • the first light absorbing device 112 may include a fly-eye lens, and is not limited thereto.
  • the first light homogenizing device 112 includes a diffusing film for scattering the first color laser light, thereby performing decoherent processing on the first color laser light.
  • the light homogenizing device 170 is a square rod.
  • the supplemental light source 120 includes an illuminator 121 and an illuminator 122 for generating two color lasers.
  • the illuminator 121 includes a red laser
  • the illuminator 122 includes a green laser
  • the supplemental light source 120 is used to emit a red laser and a green laser.
  • the illuminant 121 and the illuminator 122 can include one or two lasers or a laser array, and the number of lasers can be selected according to actual needs.
  • the supplemental light source 120 includes the illuminant 121, and the supplemental light emitted by the supplemental light source 120 includes a second color laser, such as the illuminant 121 being a red laser and emitting a red laser as supplemental light.
  • FIG. 2 is a schematic structural diagram of a substrate 158 in the wavelength conversion device 150 shown in FIG. 1.
  • the wavelength conversion device 150 includes a substrate 158 having a disk shape and a driving device 159 disposed at a geometric center of the substrate 158.
  • the driving device 159 is provided with a motor to drive the substrate 158 to rotate periodically.
  • the surface of the substrate 158 is provided with a light processing region 151 and a filter region 152.
  • the first processing section 151 includes a first section B1 for reflecting or transmitting the first color laser, and the incident light and the outgoing light of the first section B1 are at least partially separated by an optical path.
  • the first color laser light emitted from the first segment B1 is incident on the first guiding device 140.
  • the second section is for generating at least one color fluorescence under excitation of the first color laser, and the second section reflects the generated fluorescence to the second guiding device 160, and the second guiding device 160 is emitted Light passes through the filter region 152 and is incident on the light homogenizing device 170.
  • the driving device 159 drives the substrate 158 to rotate periodically, so that the first segment B1 and the second segment are alternately located in the optical path where the first color laser is located.
  • the first segment B1 is for transmitting the first color laser
  • the second segment includes a red segment R1 provided with a red phosphor and a green segment G1 provided with a green phosphor.
  • the second segment comprises a red segment R1 provided with a red phosphor and a yellow segment provided with a yellow phosphor, or the second segment comprises a yellow segment provided with a yellow phosphor and is provided with green fluorescence
  • the green light segment G1 of the powder, or the second segment includes a yellow segment provided with a yellow phosphor to produce yellow fluorescence.
  • the second segment can also be set with other color phosphor combinations, and is not limited thereto.
  • the substrate 158 is provided with a reflective material corresponding to the position of the second section to reflect the generated fluorescence.
  • the light processing region 151 and the filter region 152 are annular regions having unequal inner diameters, and the centers are disposed on the first surface 155 of the substrate 158 in a superposed manner.
  • the first section B1 and the second section are both fan-shaped.
  • the inner diameter of the filter region 152 is larger than the inner diameter of the light processing region 151, that is, the filter region 152 is disposed at the periphery of the light processing region 151. It can be understood that the inner diameter of the filter region 152 can be smaller than the inner diameter of the light treatment region 151.
  • the filter region 152 includes a first filter segment B2, a second filter segment R2, and a third filter segment G2 corresponding to the first segment B1, the red segment R1, and the green segment G1, respectively.
  • the first segment B1 and the first filter segment B2 are respectively opposite and equal to the central angle formed by the geometric center of the substrate 158. Accordingly, the red segment R1 and the second filter segment R2 are respectively formed with the center of the substrate 158.
  • the central angles are opposite and equal, and the green light segment G1 and the third filter segment G2 are respectively opposite and equal to the central angle formed by the center of the substrate.
  • the first guiding device 140 further includes a mirror 142 , a mirror 144 , a light combining unit 146 , and a second light homogenizing device 148 .
  • the mirror 142 and the mirror 144 are used to guide the first color laser light emitted from the first segment B1 of the wavelength conversion device 150 to the light combining unit 146, and the first color laser that the light combining unit 146 emits the mirror 144 and supplement.
  • the complementary light emitted from the light source 120 is combined to obtain the mixed light, and the mixed light emitted by the light combining unit 146 is homogenized by the second light homogenizing device 148 and then emitted to the condenser lens 149, and the second light homogenizing device 148 is disposed at the combined light.
  • the unit 146 is between the condenser lens 149.
  • the second light homogenizing device 148 is also provided with a diffusing film for decohering the mixed light.
  • the light combining unit 146 includes a plurality of spaced apart spectral filters for wavelength splitting. In one embodiment, the light combining unit 146 includes two spectral filters that are X-shaped. It can be understood that the light combining unit 146 can also be provided with other devices for combining and outputting a plurality of color lasers.
  • the second guiding device 160 includes a spectral filter 161, a collecting lens group 162, a mirror 163, and a first optical lens 166.
  • the spectral filter 161 is for transmitting the first color laser and reflecting the fluorescence.
  • the collection lens group 162 is disposed adjacent to the surface of the wavelength conversion device 150 for concentrating light incident on the surface of the wavelength conversion device 150 and collecting light emitted from the wavelength conversion device 150.
  • the first color laser light is sequentially incident through the spectral filter 161 and the collecting lens group 162 to the light processing region 151 of the wavelength conversion device 150, wherein the first segment B1 transmits the first color laser, and the second region
  • the segment generates fluorescence under excitation of the first color laser
  • the second segment reflects the fluorescence to the collection lens group 162, the fluorescence sequentially passing through the collection of the collection lens group 162, the reflection of the spectroscopic filter 161,
  • the reflection of the mirror 163, the transmission of the first optical lens 166, and the filter region 152 of the wavelength conversion device 150 are incident on the light homogenizing device 170.
  • FIG. 3 is a schematic structural view of the first optical lens 166 shown in FIG.
  • the first optical lens 166 includes a plated region 166a and an edge region 166b.
  • the coated area 166a is for reflecting light and the edge area 166b is for transmitting light. It can be understood that the coating region 166a can be disposed at the geometric center of the surface of the first optical lens 166 or at the edge of the surface of the first optical lens 166.
  • the mixed light is concentrated by the converging lens 149 and concentrated in the vicinity of the coating region 166a, that is, the spot formed by the mixed light on the surface of the first optical lens 166 is small, and the first optical lens 166 is disposed on the spectroscopic filter 161 to emit fluorescence.
  • the focal position therefore, the size of the mixed light spot on the surface of the first optical lens 166 is much smaller than the spot size of the fluorescent light, such that the coated region 166a can be placed sufficiently small that the fluorescent effect is lost in the coated region 166a of the first optical lens 166 small.
  • the fluorescence lost in the coating region 166a is only about 6%.
  • the fluorescence loss of the fluorescence at the first optical lens 166 is extremely small, it is advantageous to improve the continuity of the fluorescence and the angular distribution of the mixed photosynthetic light entering the light homogenizing device 170, which is advantageous for reducing the The projection device displays the probability that the picture color is not uniform.
  • the first color laser and the complementary light in the mixed light do not pass through the reflection and diffusion of the wavelength conversion device 150, the transmission loss without passing through the spectral filter 161, and the number of optical devices that pass through, so that the excitation light source 110 and the supplement
  • the laser utilization in source 120 is extremely high, and in one embodiment, the laser utilization can be greater than 90%.
  • the mixed light beam incident on the light homogenizing device 170 coincides with the maximum incident angle of the fluorescent light beam, thereby improving the uniformity of the exit spot of the light homogenizing device 170 of the light source system 100.
  • the mixed beam of light exiting the first optical lens 166 fills the entrance of the homogenizer 170.
  • the light source system 100 may further include a relay system and guiding elements well known in the art, such as a relay lens, a mirror, a spectroscopic filter, and the like.
  • FIG. 4 is a schematic diagram of the angular distribution of the mixed light and fluorescence beams shown in FIG. 1 .
  • the mixed light is a laser having a Gaussian distribution of angular distribution
  • the angular distribution of the mixed light beams concentrated in the light homogenizing device 170 has a Gaussian distribution, which is different from the uniformly distributed fluorescence at an angle of the angular distribution of the wavelength conversion device 150.
  • the small angle light in the mixed light beam occupies a relatively large amount, and the mixed light of the small angle is reflected less than the large angle of fluorescence in the light homogenizing device 170, so that the mixed light of the reflection loss is less, and the mixed light passes through the light homogenizing device 170.
  • the efficiency is higher than the fluorescence, which is advantageous for improving the utilization of the laser in the light source system 100.
  • the light source system 100 provided in the present embodiment combines the difference between the laser and the fluorescence optical spread amount, and can realize color display in a wide color gamut and high optical efficiency.
  • FIG. 5 is a schematic structural diagram of a light source system 200 according to a second embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of the wavelength conversion device 250 shown in FIG.
  • the main difference between the light source system 200 and the light source system 100 is that the first section B1 of the wavelength conversion device 250 is provided with a reflection portion 254, and the reflection portion 254 includes a reflection surface 254a for reflecting the first color laser light.
  • the angle between the reflecting surface 254a and the plane of the second section is at a predetermined angle ⁇ , and the first color laser is irradiated onto the reflecting surface 254a in the direction of the central axis of the collecting lens group 262, and is reflected by the reflecting surface 254a.
  • the first guiding device 240 Incident to the first guiding device 240.
  • the inner diameter of the filter region 252 of the wavelength conversion device 250 is smaller than the light treatment region 251, that is, the light treatment region 251 is disposed at the periphery of the filter region 252.
  • the substrate 258 of the wavelength conversion device 250 includes a first surface 255 and a second surface 256 disposed opposite to each other, wherein a wedge-shaped reflective portion 254 is disposed between the first surface 255 and the second surface 256, and the reflective surface 254a is connected to the first surface. A slope between the surface 255 and the second surface 256.
  • the preset angle ⁇ is 45 degrees, it being understood that the preset angle ⁇ may also be other angles.
  • FIG. 7 is a schematic structural diagram of a light source system 300 according to a third embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of the wavelength conversion device 350 shown in FIG.
  • the main difference between the light source system 300 and the light source system 200 is that the first section is provided with a mounting groove, and the reflecting portion 354 is at least partially received in the mounting groove, and the reflecting surface 354a is at a predetermined angle with the surface of the second section.
  • the first color laser light emitted from the reflecting surface 354a sequentially passes through the collecting lens group 362 and the spectral filter 361 in the second guiding device 360, and then enters the first guiding device 340, and the incident light and the outgoing light of the reflecting surface 354a are collected.
  • the optical paths in the lens group 362 are separated.
  • a part of the reflection portion 354 and the reflection surface 354a protrudes from the first surface 355.
  • the reflecting portion 354 is protruded from the first surface 355, and the reflecting surface 354a is connected to the first surface 355.
  • FIG. 9 is a schematic structural diagram of a light source system 400 according to a fourth embodiment of the present invention
  • FIG. 10 is a schematic structural diagram of the wavelength conversion device 450 illustrated in FIG. 9
  • the main difference between the light source system 400 and the light source system 200 is that the reflecting surface 454a of the wavelength converting device 450 is parallel to the second segment surface, and the first color laser is irradiated onto the reflecting surface 454a in a direction deviating from the central axis of the collecting lens group 462, and the reflection The incident light of the face 454a is separated from the optical path of the outgoing light in the collecting lens group 462.
  • the light-input side of the wavelength conversion device 450 is provided with a mounting groove, and the reflecting portion 454 is accommodated in the mounting groove, and the reflecting surface 454a is located on the same plane as the second segment. It can be understood that the thickness of the reflecting portion 454 can be greater than the depth of the mounting groove, and the reflecting surface 454a protrudes from the first surface 455 of the wavelength conversion device 450.
  • FIG. 11 is a schematic structural diagram of a light source system 500 according to a fifth embodiment of the present invention.
  • the main difference between the light source system 500 and the light source system 100 is that the wavelength conversion device 550 is provided with a wavelength conversion material for generating a color fluorescence, and the spectral filter 561 of the second guiding device 560 is used to guide a portion of the first color laser to The wavelength conversion device 550 guides another portion of the first color laser light to the first guiding device 540 and reflects the fluorescence generated by the wavelength conversion device 550, so that the fluorescent light and the mixed light emitted by the first optical lens 566 are emitted along the same optical path to the uniformity.
  • the light device 570 is a double fly-eye lens.
  • the first optical lens 566 used in the embodiment is a mirror for reflecting mixed light, or the structure and function of the first optical lens 566 and the first optical lens 166 are the same, and are not described herein.
  • the size of the first optical lens 566 is much smaller than the size of the spectral filter 561 and is comparable to the spot size of the mixed light after focusing on the optical axis of the homogenizing device 570, which is advantageous for reducing the fluorescence in the first optical lens 566. Loss at the place.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne des systèmes de source de lumière (100, 200, 300, 400, 500) et un appareil de projection. Les systèmes de source de lumière (100, 200, 300, 400, 500) comprennent : une source de lumière d'excitation (110) ; une source de lumière supplémentaire (120) ; des dispositifs de conversion de longueur d'onde (150, 250, 350, 450, 550) conçus pour générer une lumière fluorescente sous l'excitation d'une partie d'un premier laser de couleur ; des premiers dispositifs de guidage (140, 540) qui sont conçus pour guider l'autre partie du premier laser couleur ainsi que la lumière supplémentaire de façon à ce qu'elles se combinent pour obtenir une lumière mélangée, et qui comprennent une lentille convergente (149), la lumière mélangée étant émise au moyen de la convergence de la lentille convergente (149) ; et des seconds dispositifs de guidage (160, 560), les seconds dispositifs de guidage (160, 560) comprenant : des filtres optiques de division de lumière (161, 361, 561) disposés entre la source de lumière d'excitation (110) et les dispositifs de conversion de longueur d'onde (150, 250, 350, 450, 550) et conçus pour guider le premier laser couleur de façon à ce qu'il irradie les dispositifs de conversion de longueur d'onde (150, 250, 350, 450, 550) et qu'il réfléchisse la lumière fluorescente ; et des premières lentilles optiques (166, 566) disposées dans une position extra-focale où les filtres optiques de division de lumière (161, 361, 561) émettent la lumière fluorescente, la lumière mélangée émise par les premiers dispositifs de guidage (140, 540) s'amassant à proximité des premières lentilles optiques (166, 566) et la lumière fluorescente ainsi que la lumière mélangée étant émises après avoir été combinées au niveau des premières lentilles optiques (166, 566).
PCT/CN2019/070527 2018-04-19 2019-01-05 Systèmes de source de lumière et appareil de projection WO2019200980A1 (fr)

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CN113311655A (zh) * 2021-06-18 2021-08-27 青岛海信激光显示股份有限公司 投影光源和投影设备

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