WO2019200980A1 - Light source systems and projection apparatus - Google Patents
Light source systems and projection apparatus Download PDFInfo
- 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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- WIPO (PCT)
- Prior art keywords
- light
- light source
- color laser
- source system
- wavelength conversion
- Prior art date
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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
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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
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
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- 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
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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
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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
-
- 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
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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
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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
- G03B21/208—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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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Light source systems (100, 200, 300, 400, 500) and a projection apparatus. The light source systems (100, 200, 300, 400, 500) comprise: an excitation light source (110); a supplementary light source (120); wavelength conversion devices (150, 250, 350, 450, 550), configured to generate fluorescent light under excitation of a portion of a first color laser; first guiding devices (140, 540), configured to guide the other portion of the first color laser and the supplementary light to be combined to obtain mixed light, and comprising a convergent lens (149), the mixed light being emitted by means of convergence of the convergent lens (149); and second guiding devices (160, 560), the second guiding devices (160, 560) comprising: light-splitting optical filters (161, 361, 561), provided between the excitation light source (110) and the wavelength conversion devices (150, 250, 350, 450, 550), and configured to guide the first color laser to be irradiated to the wavelength conversion devices (150, 250, 350, 450, 550), and reflect the fluorescent light; and first optical lenses (166, 566), provided at an off-focus position where the light-splitting optical filters (161, 361, 561) emit the fluorescent light, the mixed light emitted by the first guiding devices (140, 540) gathering near the first optical lenses (166, 566), and the fluorescent light and the mixed light being emitted after being combined at the first optical lenses (166, 566).
Description
本发明涉及投影技术领域,尤其涉及一种光源***及投影设备。The present invention relates to the field of projection technologies, and in particular, to a light source system and a projection device.
本部分旨在为权利要求书中陈述的本发明的具体实施方式提供背景或上下文。此处的描述不因为包括在本部分中就承认是现有技术。This section is intended to provide a context or context for the specific embodiments of the invention set forth in the claims. The description herein is not admitted to be prior art as it is included in this section.
激光荧光光源技术是利用激发光激发荧光粉产生受激光的技术,通常使用蓝激光作为激发光,荧光粉可以是黄光荧光粉、绿光荧光粉或红光荧光粉等,而蓝激光的成本相对较低,电光转化效率高,荧光粉的激发效率高;但荧光光谱较宽,色纯度低,因此不能直接满足于广色域的要求,为了提高颜色纯度,通常使用滤光片对其进行滤光,但这种方式会造成较大的光损失。The laser fluorescent light source technology is a technique for exciting a phosphor to generate a laser by using excitation light. Usually, a blue laser is used as the excitation light, and 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. However, 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.
在此基础上,利用荧光和激光的混合光源既能获得较好的色纯度,又能利用两者混光消相干,维持一个可接受的成本。与此同时给光学设计带来一些难题,由于荧光光谱与激光光谱存在重叠的波段,将两者合光将造成光效损失较大。On this basis, 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.
发明内容Summary of the invention
为解决现有技术激光荧光光源中的激光与荧光合光导致的光效损失较大的技术问题,本发明提供一种能够实现激光与荧光合光损失较小的光源***,本发光还提供一种投影设备。In order to solve the technical problem that the light loss caused by the combination of laser and fluorescent light in the prior art laser fluorescent light source is large, 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.
一种光源***,包括a light source system, including
激发光源,用于发出第一色激光;Exciting a light source for emitting a first color laser;
补充光源,用于发出补充光,所述补充光至少包括第二色激光;a supplemental light source for emitting supplemental light, the supplemental light comprising at least a second color laser;
波长转换装置,用于在一部分第一色激光的激发下产生荧光;a wavelength conversion device for generating fluorescence under excitation of a portion of the first color laser;
第一引导装置,用于引导另一部分第一色激光与所述补充光进行合光以得到混合光,所述第一引导装置包括会聚透镜,所述混合光经所述会聚透镜的会聚后出射;及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 ;and
第二引导装置,包括:The second guiding device comprises:
分光滤光片,设置于所述激发光源与所述波长转换装置之间,用于引导所述第一色激光照射至所述波长转换装置,以及反射所述荧光;及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;
第一光学镜片,设置于所述分光滤光片出射荧光的离焦位置,所述第一引导装置出射的混合光会聚于所述第一光学镜片附近,所述分光滤光片出射的荧光与所述第一引导装置出射的混合光在所述第一光学镜片处合光后出射。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.
进一步地,所述光源***还包括匀光装置,用于对所述第一光学镜片出射的光线进行匀光。Further, the light source system further includes a light homogenizing device for homogenizing the light emitted by the first optical lens.
进一步地,入射至所述匀光装置的混合光与荧光的最大入射角一致。Further, the mixed light incident to the light homogenizing device coincides with the maximum incident angle of the fluorescence.
进一步地,所述第一引导装置还包括:Further, the first guiding device further includes:
至少一反射镜,用于引导所述另一部分第一色激光;及At least one mirror for guiding the other portion of the first color laser; and
合光单元,用于对所述补充光与所述至少一反射镜出射的第一色激光进行合光。And a light combining unit configured to combine the complementary light with the first color laser light emitted by the at least one mirror.
进一步地,所述第二引导装置还包括邻近波长转换装置表面设置的收集透镜组,所述收集透镜组用于对入射至所述波长转换装置表面的光线进行会聚,以及对所述波长转换装置出射的光线进行收集。Further, 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.
进一步地,所述波长转换装置设置有用于产生一种颜色荧光的波长转换材料,所述分光滤光片用于将一部分第一色激光引导至所述波长转换装置、引导另一部分第一色激光入射至所述第一引导装置、以及反射所述波长转换装置产生的荧光,使得所述荧光与所述第一光学镜片出射的混合光沿同一光路出射至所述匀光装置。Further, 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.
进一步地,所述波长转换装置设置有:Further, the wavelength conversion device is provided with:
光处理区,包括:Light processing area, including:
用于反射或透射所述第一色激光第一区段,所述第一区段出射的第一色激光入射至所述第一引导装置,所述第一区段的入射光及出射光至少部分光路分离;及For reflecting or transmitting the first color laser first segment, 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; and
用于在所述第一色激光的激发下产生至少一种颜色荧光的第二区段,所述第二区段将产生的荧光反射至所述第二引导装置;及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;
用于滤光的滤光区,所述第二引导装置出射的光线穿过所述滤光区后出射;及a filter region for filtering, the light emitted by the second guiding device exiting through the filter region; and
驱动装置,驱动所述波长转换装置做周期性旋转,使得所述第一区段及所述第二区段交替位于所述第一色激光的光路上。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.
进一步地,所述光源***的匀光装置与所述第一光学镜片分别设置于所述波长转换装置的两侧,所述第一光学镜片出射的光线穿过所述滤光区入射至所述匀光装置。Further, 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.
进一步地,所述第一区段设置有反射部,所述反射部包括用于反射所述第一色激光的反射面。Further, the first section is provided with a reflection portion, and the reflection portion includes a reflection surface for reflecting the first color laser light.
进一步地,所述反射面与所述第二区段所在平面之间的夹角呈预设角度,所述第一色激光沿所述收集透镜组中心轴线的方向照射至所述反射面上。Further, 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.
进一步地,所述滤光区的内径小于所述光处理区,所述波长转换装置的基板包括相对设置的第一表面与第二表面,所述反射部设置于所述第一表面与所述第二表面之间,所述反射面为连接在所述第一表面与所述第二表面之间的斜面。Further, an inner diameter of the filter region is smaller than the light processing region, 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.
进一步地,所述第一区段设置有安装槽,所述反射部至少部分容置于所述安装槽中,所述反射面与所述第二区段表面呈预设角度,所述反射面出射的第一色激光依次穿过所述第二引导装置中的收集透镜组及所述分光滤光片后入射至所述第一引导装置,所述反射面的入射光与出射光在所述收集透镜组中的光路分离。Further, 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.
进一步地,所述第一区段设置有安装槽,所述反射部至少部分容置于所述安装槽中,所述反射面平行于所述第二区段表面,所述第一色激光沿偏离所述收集透镜组中心轴线的方向照射至所述反射面上, 所述反射面的入射光与出射光在所述收集透镜组中的光路分离。Further, 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.
一种投影设备,包括如上任意一项所述的光源***。A projection apparatus comprising the light source system of any of the above.
本发明提供的光源***中利用激光与荧光光学扩展量差异进行合光,既能实现广色域的色彩显示,又有较高的光学效率。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.
为了更清楚地说明本发明实施例/方式技术方案,下面将对实施例/方式描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例/方式,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。In order to more clearly illustrate the embodiments of the present invention, the drawings used in the description of the embodiments/modes will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. / MODES, other figures can be obtained from those skilled in the art without any inventive effort.
图1为本发明第一实施方式提供的光源***的结构示意图。FIG. 1 is a schematic structural diagram of a light source system according to a first embodiment of the present invention.
图2为图1所示的波长转换装置中基板的结构示意图。FIG. 2 is a schematic structural view of a substrate in the wavelength conversion device shown in FIG. 1. FIG.
图3为图1所示的第一光学镜片的结构示意图。FIG. 3 is a schematic structural view of the first optical lens shown in FIG. 1. FIG.
图4为图1所示的混合光与荧光的光束角度分布示意图。4 is a schematic view showing the angular distribution of the mixed light and fluorescence beams shown in FIG. 1.
图5为本发明第二实施方式提供的光源***的结构示意图。FIG. 5 is a schematic structural diagram of a light source system according to a second embodiment of the present invention.
图6为图5所示的波长转换装置的结构示意图。Fig. 6 is a schematic structural view of the wavelength conversion device shown in Fig. 5.
图7为本发明第三实施方式提供的光源***的结构示意图。FIG. 7 is a schematic structural diagram of a light source system according to a third embodiment of the present invention.
图8为图7所示的波长转换装置的结构示意图。Fig. 8 is a schematic structural view of the wavelength conversion device shown in Fig. 7.
图9为本发明第四实施方式提供的光源***的结构示意图。FIG. 9 is a schematic structural diagram of a light source system according to a fourth embodiment of the present invention.
图10为图9所示的波长转换装置的结构示意图。Fig. 10 is a schematic structural view of the wavelength conversion device shown in Fig. 9.
图11为本发明第五实施方式提供的光源***的结构示意图。FIG. 11 is a schematic structural diagram of a light source system according to a fifth embodiment of the present invention.
主要元件符号说明Main component symbol description
光源*** |
100、200、300、400、500100, 200, 300, 400, 500 |
激发光源 |
110110 |
发光体 |
111、121、122111, 121, 122 |
第一匀光器件First uniform |
112112 |
补充光源Supplementary |
120120 |
第一引导装置First guiding device | 140、340140,340 |
反射镜 |
142、144、163142, 144, 163 |
合光单元 |
146146 |
第二匀光器件 |
148148 |
聚透镜 |
149149 |
波长转换装置 |
150、250、450、550150, 250, 450, 550 |
光处理区 |
151、251151, 251 |
第一区段First section | B1B1 |
红光段Red light segment | R1R1 |
绿光段Green light segment |
G1 |
滤光区Filter zone | 152、252152, 252 |
第一滤光段First filter segment | B2B2 |
第二滤光段Second filter segment | R2R2 |
第三滤光段Third filter segment |
G2 |
反射部Reflection section | 254、354254, 354 |
反射面 |
254a、354a、454a254a, 354a, 454a |
预设角度Preset angle | θθ |
第一表面 |
155、255、355、455155, 255, 355, 455 |
第二表面 |
256256 |
基板 |
158、258158, 258 |
驱动装置 |
159159 |
第二引导装置 |
160、360、560160, 360, 560 |
分光滤光片 |
161、361、561161, 361, 561 |
收集透镜组 |
162、262、362、462162, 262, 362, 462 |
第一光学镜片First optical lens | 166、566166,566 |
镀膜区域 |
166a |
边缘区域Edge area | 166b166b |
匀光装置Homogenizer | 170、570170,570 |
如下具体实施方式将结合上述附图进一步说明本发明。The invention will be further illustrated by the following detailed description in conjunction with the accompanying drawings.
为了能够更清楚地理解本发明的上述目的、特征和优点,下面结合附图和具体实施例对本发明进行详细描述。需要说明的是,在不冲突的情况下,本申请的实施例及实施例中的特征可以相互组合。The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
在下面的描述中阐述了很多具体细节以便于充分理解本发明,所描述的实施例仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。In the following description, numerous specific details are set forth in order to provide a All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本发明。All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.
本发明实施方式中提供的光源***中利用激光与荧光光学扩展量差异进行合光,既能实现广色域的色彩显示,又有较高的光学效率。所述光源***能够应用于投影设备中,有利于提高所述投影设备的画面显示质量及产品竞争力。可以理解的是,所述投影设备可以包括LCD(Liquid Crystal Display,液晶显示器)、LCOS(Liquid Crystal on Silicon,即液晶附硅,也叫硅基液晶)或DMD(Digital Mirror Device,Digital Micromirror Device,数字微镜元件)等空间光调制器。In the light source system provided by the 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. It is to be understood that 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.
请参阅图1,为本发明第一实施方式提供的光源***100的结构示意图。光源***100,包括激发光源110、补充光源120、第一引导装置140、波长转换装置150、第二引导装置160及匀光装置170。其中,激发光源110用于发出第一色激光;补充光源120用于发出补充光,所述补充光至少包括第二色激光;波长转换装置150用于在一部分第一色激光的激发下产生荧光;第一引导装置140用于引导另一部分第一色激光与所述补充光进行合光以得到混合光,第一引导装置140包括会聚透镜149,所述混合光经会聚透镜149的会聚后出射;第 二引导装置160用于引导所述荧光,包括分光滤光片161及第一光学镜片166。分光滤光片161设置于激发光源110与波长转换装置150之间,用于引导所述第一色激光照射至波长转换装置150,以及反射所述荧光至第一光学镜片166;第一光学镜片166设置于分光滤光片161出射荧光的离焦位置,第一引导装置140出射的混合光会聚于第一光学镜片166附近,分光滤光片161出射的荧光与第一引导装置140出射的混合光在第一光学镜片166处合光后出射;匀光装置170用于对第一光学镜片166出射的光线进行匀光。Please refer to FIG. 1 , which 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. Wherein, the excitation light source 110 is used to emit a first color laser; the supplementary light source 120 is used to emit supplemental light, and the supplementary light includes at least a second color laser; and 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.
具体地,激发光源110与补充光源120发出颜色不同的激光。激发光源110包括用于产生第一色激光的发光体111与对所述第一色激光进行匀光的第一匀光器件112。Specifically, 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.
进一步地,激发光源110可以为蓝色光源,发出蓝色激光。可以理解的是,激发光源110不限于蓝色光源,激发光源110也可以是紫色光源、红色光源或绿色光源等。本实施方式中,发光体111为蓝色激光器,用于发出蓝色激光作为第一色激光。可以理解,发光体111可以包括一个、两个激光器或激光器阵列,具体其激光器的数量可以依据实际需要选择。Further, 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. In the present embodiment, 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.
第一匀光器件112用于将第一色激光进行匀光后出射至第二引导装置160。本实施例中,第一匀光器件112为匀光棒,可以理解的是,在其他实施例中,第一匀光器件112可以包括复眼透镜,并不以此为限。在一种实施方式中,第一匀光器件112中包括用于对第一色激光进行散射的散射膜片,从而对所述第一色激光进行消相干处理。匀光装置170为方棒。The first light homogenizing device 112 is configured to dim the first color laser light and then exit to the second guiding device 160. In this embodiment, the first light homogenizing device 112 is a light concentrating rod. It can be understood that in other embodiments, the first light absorbing device 112 may include a fly-eye lens, and is not limited thereto. In one embodiment, 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.
本实施方式中,补充光源120包括用于产生两种颜色激光的发光体121与发光体122。发光体121包括红色激光器,发光体122包括绿色激光器,补充光源120用于发出红色激光与绿色激光。在本实施方式中,可以理解,发光体121与发光体122可以包括一个、两个激光器或激光器阵列,具体其激光器的数量可以依据实际需要选择。可以理解的是,在一种实施方式中,补充光源120包括发光体121,补 充光源120发出的补充光包括第二色激光,比如发光体121为红色激光器,发出红色激光作为补充光。In the present embodiment, 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, and the supplemental light source 120 is used to emit a red laser and a green laser. In this embodiment, it can be understood that 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. It can be understood that, in one embodiment, 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.
请结合图1参阅图2,图2为图1所示的波长转换装置150中基板158的结构示意图。在本发明实施方式中,波长转换装置150包括呈盘状的基板158及设置于基板158几何中心的驱动装置159。驱动装置159设置有马达以带动基板158做周期性旋转。Referring to FIG. 2 in conjunction with FIG. 1, FIG. 2 is a schematic structural diagram of a substrate 158 in the wavelength conversion device 150 shown in FIG. 1. In the embodiment of the present invention, 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.
具体地,基板158表面设置有光处理区151及滤光区152。光处理区151中包括第一区段B1与第二区段,第一区段B1用于反射或透射所述第一色激光,第一区段B1的入射光及出射光至少部分光路分离,第一区段B1出射的第一色激光入射至第一引导装置140。所述第二区段用于在所述第一色激光的激发下产生至少一种颜色荧光,所述第二区段将产生的荧光反射至第二引导装置160,第二引导装置160出射的光线穿过滤光区152后入射至匀光装置170。驱动装置159带动基板158做周期性旋转,使得第一区段B1与所述第二区段交替位于所述第一色激光所在的光路。Specifically, 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.
第一区段B1用于透射所述第一色激光,所述第二区段包括设置有红色荧光粉的红光段R1与设置有绿色荧光粉的绿光段G1。在其他实施方式中,第二区段包括设置有红色荧光粉的红光段R1与设置有黄色荧光粉的黄色段,或第二区段包括设置有黄色荧光粉的黄色段与设置有绿色荧光粉的绿光段G1,或第二区段包括设置有黄色荧光粉的黄色段,以产生黄色荧光。对应的可以理解的是,第二区段还可以设置其他颜色荧光粉组合,并不以此为限。基板158对应所述第二区段的位置设置有反射材料,以将产生的荧光反射出去。The first segment B1 is for transmitting the first color laser, and the second segment includes a red segment R1 provided with a red phosphor and a green segment G1 provided with a green phosphor. In other embodiments, 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. Correspondingly, it can be understood that 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.
在本实施方式中,光处理区151与滤光区152均为内径不相等的环形区域,中心重合地设置于基板158的第一表面155。第一区段B1与所述第二区段均呈扇环形。进一步地,滤光区152的内径大于光处理区151的内径,即滤光区152设置于光处理区151的***。可以理解的是,滤光区152的内径可以小于光处理区151的内径。滤光区152包括分别与第一区段B1、红光段R1及绿光段G1对应的第一滤光段 B2、第二滤光段R2及第三滤光段G2。其中,第一区段B1及第一滤光段B2分别与基板158几何中心构成的圆心角正对且相等,相应地,红光段R1与第二滤光段R2分别与基板158中心构成的圆心角正对且相等,绿光段G1及第三滤光段G2分别与所述基板中心构成的圆心角正对且相等。In the present embodiment, 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. Further, 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.
请再次参阅图1,第一引导装置140还包括反射镜142、反射镜144、合光单元146、第二匀光器件148。其中,反射镜142与反射镜144用于引导波长转换装置150中第一区段B1出射的第一色激光至合光单元146,合光单元146将反射镜144出射的第一色激光及补充光源120出射的补充光进行合光得到所述混合光,合光单元146出射的混合光经过第二匀光器件148的匀光后出射至会聚透镜149,第二匀光器件148设置于合光单元146与会聚透镜149之间。在一种实施方式中,第二匀光器件148还设置有用于散射膜片,以对所述混合光进行消相干处理。Referring again to FIG. 1 , 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. In one embodiment, the second light homogenizing device 148 is also provided with a diffusing film for decohering the mixed light.
在一种实施方式中,合光单元146包括多个间隔设置的用于波长分光的分光滤光片。在一种实施方式中,合光单元146包括两个组成X形的分光滤光片。可以理解的是,合光单元146还可以设置其他的装置用于将多种颜色激光进行合光后出射。In one embodiment, 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.
第二引导装置160包括分光滤光片161、收集透镜组162、反射镜163及第一光学镜片166。本实施方式中,分光滤光片161用于透射所述第一色激光、反射所述荧光。收集透镜组162邻近波长转换装置150表面设置,用于对入射至波长转换装置150表面的光线进行会聚,以及对波长转换装置150出射的光线进行收集。所述第一色激光依次穿过分光滤光片161及收集透镜组162入射至波长转换装置150的光处理区151,其中第一区段B1透射所述第一色激光,所述第二区段在所述第一色激光的激发下产生荧光,所述第二区段反射所述荧光至收集透镜组162,所述荧光依次经过收集透镜组162的收集、分光滤光片161的反射、反射镜163的反射、第一光学镜片166的透射、波长转换装置150的滤光区152入射至匀光装置170。The second guiding device 160 includes a spectral filter 161, a collecting lens group 162, a mirror 163, and a first optical lens 166. In the present embodiment, 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, and 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.
请结合图1参阅图3,图3为图1所示的第一光学镜片166的结构示意图。第一光学镜片166包括镀膜区域166a与边缘区域166b。其中镀膜区域166a用于反射光线,边缘区域166b用于透射光线。可以理解的是,镀膜区域166a可以设置于第一光学镜片166表面的几何中心,也可以设置于第一光学镜片166表面的边缘。Please refer to FIG. 3 in conjunction with FIG. 1. 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.
所述混合光经会聚透镜149的会聚后聚焦于镀膜区域166a附近,即混合光在第一光学镜片166表面形成的光斑较小,第一光学镜片166设置于分光滤光片161出射荧光的离焦位置,因此,在第一光学镜片166表面的混合光光斑尺寸远小于荧光的光斑尺寸,从而镀膜区域166a能够设置的足够小,使得荧光在第一光学镜片166镀膜区域166a损失的光效极小。在一种实施方式中,荧光在镀膜区域166a损失的光效仅有6%左右。并且,由于所述荧光在第一光学镜片166处损失的光效极少,从而有利于提高所述荧光和所述混合光合光进入匀光装置170的角分布的连续性,有利于降低所述投影装置显示画面颜色不均匀的几率。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. In one embodiment, the fluorescence lost in the coating region 166a is only about 6%. Moreover, since 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.
另外,所述混合光中的第一色激光及补充光不经过波长转换装置150的反射及扩散作用、不经过分光滤光片161的透射损失、经过的光学器件少,因此激发光源110与补充光源120中的激光利用率极高,在一种实施方式中,激光利用率可以高于90%。In addition, 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%.
本发明实施方式中,通过调整会聚透镜149的焦距,使得入射至匀光装置170的混合光光束与荧光光束的最大入射角一致,从而提高光源***100的匀光装置170出口光斑的均匀性。在一种实施方式中,通过调整会聚透镜149的焦距,使得第一光学镜片166出射的混合光光束填满匀光装置170入口。In the embodiment of the present invention, by adjusting the focal length of the condenser lens 149, 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. In one embodiment, by adjusting the focal length of the condenser lens 149, the mixed beam of light exiting the first optical lens 166 fills the entrance of the homogenizer 170.
可以理解的是,本发明实施方式提供的光源***100还可以包括本领域公知的中继***及引导元件,比如中继透镜、反射镜及分光滤光片等等。It can be understood that the light source system 100 provided by the embodiments of the present invention 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.
请参阅图4,为图1所示的混合光与荧光的光束角度分布示意图。由于所述混合光为角分布呈高斯分布的激光,因此会聚于匀光装置 170的混合光光束角度分布呈高斯分布,与波长转换装置150出射的角分布呈一定角度的均匀分布的荧光不同,所述混合光光束中小角度光占比较大,小角度的混合光在匀光装置170中反射次数少于大角度的荧光,因此反射损失的混合光较少,所述混合光经过匀光装置170的效率高于所述荧光,有利于提高光源***100中激光的利用率。Please refer to FIG. 4 , which is a schematic diagram of the angular distribution of the mixed light and fluorescence beams shown in FIG. 1 . Since 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.
本实施方式中提供的光源***100中利用激光与荧光光学扩展量差异进行合光,既能实现广色域的色彩显示,又有较高的光学效率。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.
请参阅图5-图6,图5为本发明第二实施方式提供的光源***200的结构示意图,图6为图5所示的波长转换装置250的结构示意图。光源***200与光源***100的主要区别在于:波长转换装置250的第一区段B1设置有反射部254,反射部254包括用于反射所述第一色激光的反射面254a。反射面254a与第二区段所在平面之间的夹角呈预设角度θ,所述第一色激光沿收集透镜组262中心轴线的方向照射至反射面254a上,经过反射面254a的反射后入射至第一引导装置240。Please refer to FIG. 5 to FIG. 6. FIG. 5 is a schematic structural diagram of a light source system 200 according to a second embodiment of the present invention, and 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 θ, 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. Incident to the first guiding device 240.
在本实施方式中,波长转换装置250的滤光区252的内径小于光处理区251,即光处理区251设置于滤光区252的***。波长转换装置250的基板258包括相对设置的第一表面255与第二表面256,其中呈楔形的反射部254设置于第一表面255与第二表面256之间,反射面254a为连接在第一表面255与第二表面256之间的斜面。In the present embodiment, 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.
在一种实施方式中,预设角度θ为45度,可以理解的是,预设角度θ还可以是其他角度。In one embodiment, the preset angle θ is 45 degrees, it being understood that the preset angle θ may also be other angles.
需要说明的是,在本发明的精神或基本特征的范围内,适用于第一实施方式中的各具体方案也可以相应的适用于第二实施方式中,为节省篇幅及避免重复起见,在此就不再赘述。It should be noted that, within the scope of the spirit or the essential features of the present invention, the specific solutions applicable to the first embodiment may also be correspondingly applied to the second embodiment, in order to save space and avoid repetition, here I won't go into details.
请参阅图7-图8,图7为本发明第三实施方式提供的光源***300的结构示意图,图8为图7所示的波长转换装置350的结构示意图。光源***300与光源***200的主要区别在于:第一区段设置有安装槽,反射部354至少部分容置于所述安装槽中,反射面354a与所述第 二区段表面呈预设角度,反射面354a出射的第一色激光依次穿过第二引导装置360中的收集透镜组362及分光滤光片361后入射至第一引导装置340,反射面354a的入射光与出射光在收集透镜组362中的光路分离。Please refer to FIG. 7 to FIG. 8. FIG. 7 is a schematic structural diagram of a light source system 300 according to a third embodiment of the present invention, and 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.
在本实施方式中,反射部354及反射面354a的一部分凸出于第一表面355。在一种实施方式中,反射部354凸设于第一表面355,反射面354a与第一表面355连接。In the present embodiment, a part of the reflection portion 354 and the reflection surface 354a protrudes from the first surface 355. In one embodiment, the reflecting portion 354 is protruded from the first surface 355, and the reflecting surface 354a is connected to the first surface 355.
需要说明的是,在本发明的精神或基本特征的范围内,适用于第一实施方式中的各具体方案也可以相应的适用于第三实施方式中,为节省篇幅及避免重复起见,在此就不再赘述。It should be noted that, within the scope of the spirit or the essential features of the present invention, the specific solutions applicable to the first embodiment may be correspondingly applied to the third embodiment, in order to save space and avoid repetition, here I won't go into details.
请参阅图9-图10,图9为本发明第四实施方式提供的光源***400的结构示意图,图10为图9所示的波长转换装置450的结构示意图。光源***400与光源***200的主要区别在于:波长转换装置450的反射面454a平行于第二区段表面,第一色激光沿偏离收集透镜组462中心轴线的方向照射至反射面454a上,反射面454a的入射光与出射光在收集透镜组462中的光路分离。9 to FIG. 10 , FIG. 9 is a schematic structural diagram of a light source system 400 according to a fourth embodiment of the present invention, and 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.
具体地,在本实施方式中,波长转换装置450的入光侧设置有安装槽,反射部454容置于所述安装槽中,反射面454a与所述第二区段位于同一平面。可以理解的是,反射部454的厚度可以大于所述安装槽的深度,反射面454a凸出于波长转换装置450的第一表面455。Specifically, in the present embodiment, 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.
需要说明的是,在本发明的精神或基本特征的范围内,适用于第一实施方式中的各具体方案也可以相应的适用于第四实施方式中,为节省篇幅及避免重复起见,在此就不再赘述。It should be noted that, within the scope of the spirit or the essential features of the present invention, the specific solutions applicable to the first embodiment may be correspondingly applied to the fourth embodiment, in order to save space and avoid repetition, here I won't go into details.
请参阅图11,为本发明第五实施方式提供的光源***500的结构示意图。光源***500与光源***100的主要区别在于:波长转换装置550设置有用于产生一种颜色荧光的波长转换材料,第二引导装置560中分光滤光片561用于将一部分第一色激光引导至波长转换装置550、引导另一部分第一色激光入射至第一引导装置540、以及反射波长转换装置550产生的荧光,使得所述荧光与第一光学镜片566出射 的混合光沿同一光路出射至匀光装置570,匀光装置570为双复眼透镜。Please refer to FIG. 11 , which 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.
本实施方式采用的第一光学镜片566为用于反射混合光的反射镜,或者第一光学镜片566与第一光学镜片166的结构与功能相同,在此不做赘述。第一光学镜片566的尺寸远小于分光滤光片561的尺寸,并与所述混合光在匀光装置570光轴上聚焦后的光斑大小相当,有利于降低所述荧光在第一光学镜片566处的损失。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.
需要说明的是,在本发明的精神或基本特征的范围内,适用于第一实施方式中的各具体方案也可以相应的适用于第五实施方式中,为节省篇幅及避免重复起见,在此就不再赘述。It should be noted that, within the scope of the spirit or the essential features of the present invention, the specific solutions applicable to the first embodiment may be correspondingly applied to the fifth embodiment, in order to save space and avoid repetition, here I won't go into details.
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此外,显然“包括”一词不排除其他单元或步骤,单数不排除复数。装置权利要求中陈述的多个装置也可以由同一个装置或***通过软件或者硬件来实现。第一,第二等词语用来表示名称,而并不表示任何特定的顺序。It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim. In addition, it is to be understood that the word "comprising" does not exclude other elements or steps. The plurality of devices recited in the device claims can also be implemented by the same device or system in software or hardware. The first, second, etc. words are used to denote names and do not denote any particular order.
最后应说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或等同替换,而不脱离本发明技术方案的精神和范围。It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Modifications or equivalents are made without departing from the spirit and scope of the invention.
Claims (14)
- 一种光源***,其特征在于,包括A light source system characterized by comprising激发光源,用于发出第一色激光;Exciting a light source for emitting a first color laser;补充光源,用于发出补充光,所述补充光至少包括第二色激光;a supplemental light source for emitting supplemental light, the supplemental light comprising at least a second color laser;波长转换装置,用于在一部分第一色激光的激发下产生荧光;a wavelength conversion device for generating fluorescence under excitation of a portion of the first color laser;第一引导装置,用于引导另一部分第一色激光与所述补充光进行合光以得到混合光,所述第一引导装置包括会聚透镜,所述混合光经所述会聚透镜的会聚后出射;及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 ;and第二引导装置,包括:The second guiding device comprises:分光滤光片,设置于所述激发光源与所述波长转换装置之间,用于引导所述第一色激光照射至所述波长转换装置,以及反射所述荧光;及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;第一光学镜片,设置于所述分光滤光片出射荧光的离焦位置,所述第一引导装置出射的混合光会聚于所述第一光学镜片附近,所述分光滤光片出射的荧光与所述第一引导装置出射的混合光在所述第一光学镜片处合光后出射。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.
- 如权利要求1所述的光源***,其特征在于,所述光源***还包括匀光装置,用于对所述第一光学镜片出射的光线进行匀光。The light source system of claim 1 wherein said light source system further comprises a light homogenizing means for homogenizing light exiting said first optical lens.
- 如权利要求2所述的光源***,其特征在于,入射至所述匀光装置的混合光与荧光的最大入射角一致。The light source system according to claim 2, wherein the mixed light incident to said light homogenizing means coincides with a maximum incident angle of fluorescence.
- 如权利要求1所述的光源***,其特征在于,所述第一引导装置还包括:The light source system of claim 1 wherein said first guiding means further comprises:至少一反射镜,用于引导所述另一部分第一色激光;及At least one mirror for guiding the other portion of the first color laser; and合光单元,用于对所述补充光与所述至少一反射镜出射的第一色激光进行合光。And a light combining unit configured to combine the complementary light with the first color laser light emitted by the at least one mirror.
- 如权利要求1所述的光源***,其特征在于,所述第二引导装置还包括邻近波长转换装置表面设置的收集透镜组,所述收集透镜组用于对入射至所述波长转换装置表面的光线进行会聚,以及对所述波 长转换装置出射的光线进行收集。A light source system according to claim 1, wherein said second guiding means further comprises a collecting lens group disposed adjacent to a surface of said wavelength converting means, said collecting lens group for incident on a surface of said wavelength converting means The light converges and collects light that exits the wavelength conversion device.
- 如权利要求1-5任意一项所述的光源***,其特征在于,所述波长转换装置设置有用于产生一种颜色荧光的波长转换材料,所述分光滤光片用于将一部分第一色激光引导至所述波长转换装置、引导另一部分第一色激光入射至所述第一引导装置、以及反射所述波长转换装置产生的荧光,使得所述荧光与所述第一光学镜片出射的混合光沿同一光路出射至所述匀光装置。A light source system according to any one of claims 1 to 5, wherein said wavelength converting means is provided with a wavelength converting material for generating a color fluorescence, said spectroscopic filter being used for a part of the first color Laser guiding to the wavelength conversion device, directing another portion of the first color laser light to the first guiding device, and reflecting fluorescence generated by the wavelength conversion device such that the fluorescence is mixed with the first optical lens Light exits the same light path to the homogenizing device.
- 如权利要求1-5任意一项所述的光源***,其特征在于,所述波长转换装置设置有:The light source system according to any one of claims 1 to 5, wherein the wavelength conversion device is provided with:光处理区,包括:Light processing area, including:用于反射或透射所述第一色激光第一区段,所述第一区段出射的第一色激光入射至所述第一引导装置,所述第一区段的入射光及出射光至少部分光路分离;及For reflecting or transmitting the first color laser first segment, 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; and用于在所述第一色激光的激发下产生至少一种颜色荧光的第二区段,所述第二区段将产生的荧光反射至所述第二引导装置;及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;用于滤光的滤光区,所述第二引导装置出射的光线穿过所述滤光区后出射;及a filter region for filtering, the light emitted by the second guiding device exiting through the filter region; and驱动装置,驱动所述波长转换装置做周期性旋转,使得所述第一区段及所述第二区段交替位于所述第一色激光的光路上。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.
- 如权利要求7所述的光源***,其特征在于,所述光源***的匀光装置与所述第一光学镜片分别设置于所述波长转换装置的两侧,所述第一光学镜片出射的光线穿过所述滤光区入射至所述匀光装置。The light source system according to claim 7, wherein the light concentrating means of the light source system and the first optical lens are respectively disposed on two sides of the wavelength conversion device, and the light emitted by the first optical lens The light absorbing device is incident through the filter region.
- 如权利要求7所述的光源***,其特征在于,所述第一区段设置有反射部,所述反射部包括用于反射所述第一色激光的反射面。A light source system according to claim 7, wherein said first section is provided with a reflecting portion, and said reflecting portion comprises a reflecting surface for reflecting said first color laser light.
- 如权利要求9所述的光源***,其特征在于,所述反射面与所述第二区段所在平面之间的夹角呈预设角度,所述第一色激光沿所述收集透镜组中心轴线的方向照射至所述反射面上。The light source system according to claim 9, wherein an angle between the reflecting surface and a plane of the second section is at a predetermined angle, and the first color laser is along the center of the collecting lens group The direction of the axis illuminates the reflective surface.
- 如权利要求10所述的光源***,其特征在于,所述滤光区的内径小于所述光处理区,所述波长转换装置的基板包括相对设置的第 一表面与第二表面,所述反射部设置于所述第一表面与所述第二表面之间,所述反射面为连接在所述第一表面与所述第二表面之间的斜面。The light source system according to claim 10, wherein an inner diameter of said filter region is smaller than said light processing region, and said substrate of said wavelength conversion device includes oppositely disposed first surface and second surface, said reflection The portion is disposed between the first surface and the second surface, and the reflective surface is a slope connected between the first surface and the second surface.
- 如权利要求10所述的光源***,其特征在于,所述第一区段设置有安装槽,所述反射部至少部分容置于所述安装槽中,所述反射面与所述第二区段表面呈预设角度,所述反射面出射的第一色激光依次穿过所述第二引导装置中的收集透镜组及所述分光滤光片后入射至所述第一引导装置,所述反射面的入射光与出射光在所述收集透镜组中的光路分离。The light source system according to claim 10, wherein the first section is provided with a mounting groove, and the reflecting portion is at least partially received in the mounting groove, the reflecting surface and the second area The surface of the segment is at a predetermined angle, and the first color laser light emitted from the reflective surface sequentially passes through the collecting lens group and the spectroscopic filter in the second guiding device and is incident on the first guiding device. The incident light of the reflecting surface is separated from the optical path of the outgoing light in the collecting lens group.
- 如权利要求9所述的光源***,其特征在于,所述第一区段设置有安装槽,所述反射部至少部分容置于所述安装槽中,所述反射面平行于所述第二区段表面,所述第一色激光沿偏离所述收集透镜组中心轴线的方向照射至所述反射面上,所述反射面的入射光与出射光在所述收集透镜组中的光路分离。A light source system according to claim 9, wherein said first section is provided with a mounting groove, said reflecting portion being at least partially received in said mounting groove, said reflecting surface being parallel to said second The segment surface, the first color laser light is irradiated onto the reflecting surface in a direction deviating from the central axis of the collecting lens group, and the incident light of the reflecting surface is separated from the optical path of the outgoing light in the collecting lens group.
- 一种投影设备,其特征在于,包括如权利要求1-13任意一项所述的光源***。A projection apparatus comprising the light source system according to any one of claims 1-13.
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CN115032856B (en) * | 2021-03-05 | 2024-07-09 | 青岛海信激光显示股份有限公司 | Light source assembly and projection device |
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