CN111947054A - Laser light source device - Google Patents
Laser light source device Download PDFInfo
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- CN111947054A CN111947054A CN202010979429.5A CN202010979429A CN111947054A CN 111947054 A CN111947054 A CN 111947054A CN 202010979429 A CN202010979429 A CN 202010979429A CN 111947054 A CN111947054 A CN 111947054A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
- F21V9/38—Combination of two or more photoluminescent elements of different materials
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Abstract
The invention discloses a laser light source device, which comprises: a blue laser for emitting blue laser light; a rotatable fluorescent wheel having a red fluorescent region, a blue fluorescent region, and a green fluorescent region; the red fluorescence area is excited by the blue laser to emit red fluorescence; the green fluorescence area is excited by the blue laser to emit green fluorescence; the blue light region can reflect the blue laser light; the red and green laser group emits red laser when the red fluorescent region rotates above the red fluorescent region, and emits green laser when the green fluorescent region rotates above the green fluorescent region; and the beam combination collimation assembly is used for coupling and collimating the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission. By applying the technical scheme provided by the invention, the equipment volume can be effectively reduced, and the integration level is improved.
Description
Technical Field
The invention relates to the technical field of laser application, in particular to a laser light source device.
Background
The laser has the characteristics of high brightness, small wavelength width, small optical expansion and the like, and has wide application prospect in the laser display field and the laser illumination field.
In recent years, laser light sources have been widely used in the fields of projection, searchlighting, and the like, and as a new generation of light source, there is a trend of gradually replacing LEDs and bulbs in various fields.
At present, the laser light source light path with high brightness in the market is simple in structure, equipment is large in size, the size of a bulb is small, laser cannot be directly used for replacing a traditional bulb, and transmission can be carried out only by means of optical fibers. Therefore, the realization of a small laser light source volume, high integration level, and high output power per unit volume is always the direction of miniaturization and integration of laser devices.
Disclosure of Invention
In view of this, the present invention provides a laser light source device, which has a simple optical path structure, and can effectively reduce the volume of the device and improve the integration level.
In order to achieve the above purpose, the invention provides the following technical scheme:
a laser light source apparatus, comprising:
a blue laser for emitting blue laser light;
a rotatable fluorescent wheel having a red fluorescent region, a blue fluorescent region, and a green fluorescent region; the red fluorescence area is excited by the blue laser to emit red fluorescence; the green fluorescence area is excited by the blue laser to emit green fluorescence; the blue light region can reflect the blue laser light;
the red and green laser group is arranged below the fluorescent wheel, emits red laser when the red fluorescent area rotates above the red fluorescent area, emits the red laser through the red fluorescent area, emits green laser when the green fluorescent area rotates above the green fluorescent area, and emits the green laser through the green fluorescent area;
and the beam combination collimation assembly is used for coupling and collimating the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission.
Preferably, in the above laser light source device, the laser light source device includes: the light guide device comprises a plurality of blue lasers and first light guide assemblies in one-to-one correspondence with the blue lasers;
the blue laser emitted by the blue laser is incident to the upper surface of the fluorescent wheel through the corresponding first light guide assembly, so that the fluorescent wheel emits or transmits fluorescent light of a corresponding color; and the fluorescence emitted by the fluorescence wheel enters the beam combination collimation assembly through the second light guide assembly.
Preferably, in the above laser light source device, the first light guide unit includes: a collimating lens group and a first reflector group; and after being collimated by a collimating lens group, the blue laser emitted by the blue laser enters the first reflector group and is reflected to the upper surface of the fluorescence wheel by the first reflector group.
Preferably, in the laser light source device, the fluorescent wheel has two green fluorescent regions disposed opposite to each other on both sides of a center of the fluorescent wheel, two blue fluorescent regions disposed opposite to each other on both sides of the center of the fluorescent wheel, and two red fluorescent regions disposed opposite to each other on both sides of the center of the fluorescent wheel, and all the fluorescent regions are located in the same circle on an upper surface of the fluorescent wheel.
Preferably, in the above laser light source device, a part of the blue laser is irradiated to the first region through the corresponding first light guide member, and another part of the blue laser is irradiated to the second region through the corresponding first light guide member;
the first area and the second area are two different areas of a preset plane and are positioned on two sides of the circle center; the preset plane is superposed with the upper surface of the fluorescent wheel and is positioned on the circular ring.
Preferably, in the above laser light source device, two second light guide assemblies are provided, one of the second light guide assemblies is opposite to the first region and is configured to allow light emitted from the fluorescent region corresponding to the first region to enter the beam combining and collimating assembly, and the other of the second light guide assemblies is opposite to the second region and is configured to allow light emitted from the fluorescent region corresponding to the second region to enter the beam combining and collimating assembly.
Preferably, in the above laser light source device, the second light guide unit includes: the first plano-convex lens and the second reflector group;
the first plano-convex lens is used for converging the light emitted by the fluorescent wheel to the second reflector group, and the second reflector group is used for reflecting the incident light to the beam combination collimation assembly.
Preferably, in the above laser light source device, the red/green laser group includes: and the emergent lasers of the red laser and the green laser are respectively converged to the same second plano-convex lens through separate lenses, and the incident light is converged to the lower surface of the fluorescent wheel by the second plano-convex lens.
Preferably, in the above laser light source device, the beam combination collimating assembly includes: a beam combining triangular prism and a third plano-convex lens;
the beam combining triangular prism is used for coupling incident light and transmitting the coupled incident light to the third plano-convex lens, and the third plano-convex lens is used for enabling the incident light to form parallel light to be emitted.
Preferably, in the above laser light source device, the upper surface of the fluorescent wheel has a first thin film, and the first thin film is a blue light antireflection film;
the lower surface of the fluorescent wheel is provided with a second film, and the second film can reflect blue light and increase the reflection of red and green light.
As can be seen from the above description, the laser light source device provided in the present invention has a rotatable fluorescent wheel, the fluorescent wheel has a red fluorescent region, a blue region and a green fluorescent region, in this application, the blue laser emitted from the blue laser is irradiated onto the fluorescent wheel to excite the red fluorescent region on the fluorescent wheel to emit red fluorescent light, and excite the green fluorescent region to emit green fluorescent light, the blue region can reflect the blue laser, further, the fluorescent wheel is disposed above the red/green laser group, when the red fluorescent region of the fluorescent wheel rotates above the red/green laser group, the red laser is emitted through the red fluorescent region, the red fluorescent light and the red laser are simultaneously output, when the green fluorescent region of the fluorescent wheel rotates above the red/green laser group, the green laser is emitted, and the green laser is emitted through the green fluorescent region, the green fluorescence and the green laser are simultaneously output, and the beam combination collimation assembly couples and collimates the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission. The laser light source device provided by the invention has a simple light path structure, can effectively reduce the volume of equipment and improve the integration level.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention.
Fig. 1 is a schematic diagram of an optical path structure of a laser light source device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fluorescent wheel according to an embodiment of the present invention.
Detailed Description
The embodiments of the present application will be described in detail and fully with reference to the accompanying drawings, wherein the description is only for the purpose of illustrating the embodiments of the present application and is not intended to limit the scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The divergence angle of the laser is small, the power is high, and the high brightness can be realized at a longer distance. In particular, the lamp can be widely applied to the fields of automobile lamps, beacon indicators, mine headlamps, portable lighting and the like.
In recent years, laser light sources have been widely used in the fields of projection, searchlighting, and the like, and as a new generation of light source, there is a trend of gradually replacing LEDs and bulbs in various fields. The LED light source in the current market has limited irradiation distance, the brightness is extremely serious along with the increase of the irradiation distance, the divergence angle is large, the long-distance irradiation area becomes extremely large, the light is dispersed, the brightness is insufficient, and the color rendering property is poor. Therefore, the realization of a small laser light source volume, high integration level, and high output power per unit volume is always the direction of miniaturization and integration of laser devices.
In order to solve the above problems, the present invention provides a laser light source device including:
a blue laser for emitting blue laser light;
a rotatable fluorescent wheel having a red fluorescent region, a blue fluorescent region, and a green fluorescent region; the red fluorescence area is excited by the blue laser to emit red fluorescence; the green fluorescence area is excited by the blue laser to emit green fluorescence; the blue light region can reflect the blue laser light;
the red and green laser group is arranged below the fluorescent wheel, emits red laser when the red fluorescent area rotates above the red fluorescent area, emits the red laser through the red fluorescent area, emits green laser when the green fluorescent area rotates above the green fluorescent area, and emits the green laser through the green fluorescent area;
and the beam combination collimation assembly is used for coupling and collimating the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission.
As can be seen from the above description, the laser light source device provided in the present invention has a rotatable fluorescent wheel, the fluorescent wheel has a red fluorescent region, a blue region and a green fluorescent region, in this application, the blue laser emitted from the blue laser is irradiated onto the fluorescent wheel to excite the red fluorescent region on the fluorescent wheel to emit red fluorescent light, and excite the green fluorescent region to emit green fluorescent light, the blue region can reflect the blue laser, further, the fluorescent wheel is disposed above the red/green laser group, when the red fluorescent region of the fluorescent wheel rotates above the red/green laser group, the red laser is emitted through the red fluorescent region, the red fluorescent light and the red laser are simultaneously output, when the green fluorescent region of the fluorescent wheel rotates above the red/green laser group, the green laser is emitted, and the green laser is emitted through the green fluorescent region, the green fluorescence and the green laser are simultaneously output, and the beam combination collimation assembly couples and collimates the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission. The laser light source device provided by the invention has a simple light path structure, can effectively reduce the volume of equipment and improve the integration level.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of an optical path structure of a laser light source device according to an embodiment of the present invention, and fig. 2 is a schematic diagram of a structure of a fluorescent wheel according to an embodiment of the present invention.
As shown in fig. 1 and 2, the laser light source device includes:
a blue laser 11, the blue laser 11 being configured to emit blue laser light;
a rotatable fluorescent wheel 12, said fluorescent wheel 12 having a red fluorescent region 123, a blue fluorescent region 122 and a green fluorescent region 121; the red fluorescence area 123 is excited by the blue laser to emit red fluorescence; the green fluorescence region 121 is excited by the blue laser to emit green fluorescence; the blue light region 122 can reflect the blue laser light;
a red-green laser group 13 disposed below the fluorescent wheel 12, wherein the red-green laser group 13 emits red laser light when the red fluorescent region 123 rotates above the red fluorescent region, the red laser light emits through the red fluorescent region 123, and emits green laser light when the green fluorescent region 121 rotates above the green fluorescent region, the green laser light emits through the green fluorescent region 121;
and the beam combination collimation assembly 14 is used for coupling and collimating the fluorescent light emitted by the fluorescent wheel 12 and the laser light to form parallel light emission.
In an embodiment of the present invention, the laser light source device includes: a plurality of the blue lasers 11, and first light guide members 21 corresponding to the blue lasers 11 one to one; the blue laser emitted from the blue laser 11 is incident on the upper surface of the fluorescent wheel 12 through the corresponding first light guide assembly 21, so that the fluorescent wheel 12 emits the red and green fluorescent light and transmits the blue laser; the fluorescence emitted from the fluorescence wheel 12 is incident to the beam combination collimation assembly 14 through the second light guide assembly 22.
Wherein the first light guide member 21 includes: a collimating lens group 211 and a first mirror group 212; the blue laser emitted from the blue laser 11 is collimated by the collimating lens group 211, then enters the first reflecting mirror group 212, and is reflected to the upper surface of the fluorescent wheel 12 by the first reflecting mirror group 212. The first mirror group 212 may be configured to have at least one mirror, which is a blue mirror, based on the optical path layout requirement. As shown in fig. 1, in the embodiment of the present invention, the blue laser light emitted from the blue laser 11 passes through two collimating lens groups 211 and then enters the upper surface of the fluorescent wheel 12 through two reflecting mirrors. The light propagation direction is indicated by a dashed arrow.
According to the invention, through skillfully designing the arrangement of the blue lasers 11, the plurality of blue lasers 11 can be incident to the fluorescent wheel 12 after being reflected for multiple times by the first light guide component 21, so that the fluorescent wheel 12 emits or transmits fluorescent light and laser light with corresponding colors, and the red, green and blue light is output in a time-sharing manner.
Specifically, blue laser light emitted from the blue laser 11 is collimated by the collimating lens group 211 and then enters the first reflecting mirror group 212, and is reflected by the first reflecting mirror group 212 and then enters the upper surface of the fluorescent wheel 12, along with the difference of the rotation position of the fluorescent wheel 12, if red fluorescent light is emitted from the red fluorescent region 123 on the fluorescent wheel 12, and if green fluorescent light is emitted from the green fluorescent region 121, if blue laser light is transmitted from the blue fluorescent region 122, red and green fluorescent light and blue laser light can be emitted in a time sequence by the rotation of the fluorescent wheel 12, the fluorescent wheel 12 emits the emitted fluorescent light to the beam combining collimating assembly 14 through the second light guide assembly 22, and the beam combining collimating assembly 14 couples and collimates the fluorescent light and the laser light emitted from the fluorescent wheel 12 to form parallel light emission. The red and green fluorescence and the three-color laser are coupled to form white light. And red and green fluorescence is coupled with the three-color laser, so that the emergent white light has good color rendering property, and speckles generated by single narrow-band laser interference can be eliminated.
In the embodiment shown in fig. 2, the fluorescent wheel 12 has two green fluorescent regions 121 disposed opposite to each other at both sides of the center of the fluorescent wheel, two blue fluorescent regions 122 disposed opposite to each other at both sides of the center of the fluorescent wheel, and two red fluorescent regions 123 disposed opposite to each other at both sides of the center of the fluorescent wheel, and all the fluorescent regions are located in the same circle on the upper surface of the fluorescent wheel 12. The center of the fluorescent wheel 12 is the position of the rotating shaft.
In the embodiment of the present invention, the fluorescent wheel 12 is disposed above the red-green laser group 13, when the red fluorescent region 123 of the fluorescent wheel 12 rotates above the red-green laser group 13, red laser is emitted, the red laser is emitted through the red fluorescent region 123, when the green fluorescent region 121 of the fluorescent wheel 12 rotates above the red-green laser group 13, green laser is emitted, the green laser is emitted through the green fluorescent region 121, the red laser and the green laser are incident to the beam combination collimating assembly 14 through the second light guide assembly 22, and the beam combination collimating assembly 14 couples and collimates the fluorescent light and the laser emitted from the fluorescent wheel 12 to form parallel light emission.
Wherein, a part of the blue laser 11 irradiates to a first region through the corresponding first light guide assembly 21, and another part of the blue laser 11 irradiates to a second region through the corresponding first light guide assembly 21; the first area and the second area are two different areas of a preset plane and are positioned on two sides of the circle center; the preset plane coincides with the upper surface of the fluorescent wheel 12 and is located on the circular ring.
It should be noted that, when the blue laser 11 is continuously turned on, two fluorescence regions of the same color can be excited by the first region and the second region at any time, so as to improve the fluorescence emission brightness. As the fluorescent wheel 12 rotates, the first and second regions can be respectively located in the two red fluorescent regions 123 during a first period of time to excite the fluorescent wheel 12 to emit red fluorescent light, the first and second regions can be respectively located in the two green fluorescent regions 121 during a second period of time to excite the fluorescent wheel 12 to emit green fluorescent light, and the first and second regions can be respectively located in the two blue fluorescent regions 122 during a third period of time to emit blue laser light through the fluorescent wheel 12.
As shown in fig. 1, there are two second light guide assemblies 22, one of the second light guide assemblies 22 is opposite to the first region and is used for making the light emitted from the fluorescent region corresponding to the first region enter the beam combining and collimating assembly 14, and the other of the second light guide assemblies 22 is opposite to the second region and is used for making the light emitted from the fluorescent region corresponding to the second region enter the beam combining and collimating assembly 14.
Wherein the second light guide assembly 22 comprises: a first plano-convex lens 221 and a second mirror group 222; the first plano-convex lens 221 is configured to converge the light emitted from the fluorescent wheel 12 to the second mirror set 222, and the second mirror set 222 is configured to reflect the incident light to the beam combination collimating assembly 14. The second mirror group 222 may be provided with at least one mirror capable of reflecting or transmitting three-color fluorescence and three-color laser light based on the optical path layout requirement. As shown in fig. 1, in the embodiment of the present invention, the second mirror group 222 has one mirror.
In the embodiment of the present invention, a part of the blue laser emitted from the blue laser 11 is collimated by the collimating lens set 211, and then enters the first reflecting mirror set 212, and then enters the first region after being reflected by the first reflecting mirror set 212, the blue laser excites the red fluorescent region 123 on the fluorescent wheel 12 to emit red fluorescent light, excites the green fluorescent region 121 to emit green fluorescent light, the blue region 122 transmits the blue laser, the red fluorescent light emitted from the red fluorescent region corresponding to the first region is converged by the first plano-convex lens 221 and then enters the second reflecting mirror set 222, the second reflecting mirror set 222 reflects the incident light to the beam combining collimating assembly 14, the green fluorescent light emitted from the green fluorescent region corresponding to the first region is converged by the first plano-convex lens 221 and then enters the second reflecting mirror set 222, the second reflecting mirror set 222 reflects the incident light to the beam combining collimating assembly 14, the blue laser light transmitted by the blue light region 122 corresponding to the first region is converged by the first plano-convex lens 221 and then incident on the second mirror set 222, and the second mirror set 222 reflects the incident light to the beam combination collimating assembly 14.
The other part of the blue laser emitted from the blue laser 11 is collimated by the collimating lens group 211, and then enters the first reflecting mirror group 212, and then enters the second area after being reflected by the first reflecting mirror group 212, the blue laser excites the red fluorescent area 123 on the fluorescent wheel 12 to emit red fluorescent light, excites the green fluorescent area 121 to emit green fluorescent light, excites the blue light area 122 to transmit the blue laser, the red fluorescent light emitted from the red fluorescent area corresponding to the second area is converged by the first plano-convex lens 221 and then enters the second reflecting mirror group 222, the second reflecting mirror group 222 reflects the incident light to the beam combining collimating assembly 14, the green fluorescent light emitted from the green fluorescent area corresponding to the second area is converged by the first plano-convex lens 221 and then enters the second reflecting mirror group 222, the second reflecting mirror group 222 reflects the incident light to the beam combining collimating assembly 14, and the blue laser transmitted from the blue area 122 corresponding to the second area is converged by the first plano-convex lens 221 and then enters the blue laser The second mirror set 222, the second mirror set 222 reflects the incident light to the beam combination collimating assembly 14.
As shown in fig. 2, in the embodiment of the present invention, 10 blue lasers 11 are taken as an example, wherein five blue lasers 11 are used for irradiating the first region, and the other five blue lasers 11 are used for irradiating the second region. The number of blue lasers 11 may be set based on the demand, is not limited to 10, and may be any number.
Further, when the red fluorescent region 123 of the fluorescent wheel 12 rotates to above the red-green laser group 13, red laser is emitted, and the red laser is emitted through the red fluorescent region 123, and when the green fluorescent region 121 of the fluorescent wheel 12 rotates to above the red-green laser group 13, green laser is emitted, and the green laser is emitted through the green fluorescent region 121, the fluorescent wheel 12 converges the emitted fluorescent light through the first plano-convex lens 221 and then enters the second mirror group 222, the second mirror group 222 reflects the incident light to the beam combination collimation assembly 14, and the beam combination collimation assembly 14 couples and collimates the fluorescent light and the laser emitted from the fluorescent wheel 12 to form parallel light emission.
Wherein the red and green laser group 13 includes: the laser beams emitted by the red laser 132 and the green laser 133 are respectively converged to the same second plano-convex lens 131 through separate lenses, and the second plano-convex lens 131 converges the incident light to the lower surface of the fluorescent wheel 12.
Wherein the beam combination collimation assembly 14 comprises: a beam combining triangular prism 141 and a third plano-convex lens 142; the beam combining triangular prism 141 is configured to couple incident light and transmit the coupled incident light to the third planoconvex lens 142, and the third planoconvex lens 142 is configured to form parallel light from the incident light and emit the parallel light.
In the embodiment of the present invention, the blue laser emitted from the blue laser 11 is collimated by the collimating lens group 211, and then enters the first reflecting mirror group 212, and after being reflected by the first reflecting mirror group 212, the blue laser enters the upper surface of the fluorescent wheel 12, the red fluorescent region 123 on the fluorescent wheel 12 is excited to emit red fluorescent light, the green fluorescent region 121 on the fluorescent wheel is excited to emit green fluorescent light, the blue region 122 transmits the blue laser, and the red fluorescent light, the green fluorescent light and the blue laser are converged by the first plano-convex lens 221 and then enter the second reflecting mirror group 222, the second reflecting mirror group 222 reflects the incident light to the beam combining triangular prism 141, and the beam combining triangular prism 141 couples the incident light and transmits the coupled light to the third plano-convex lens 142 to form parallel light emission.
Further, when the red fluorescent region 123 of the fluorescent wheel 12 rotates above the red-green laser group 13, the red laser emitted from the red laser 132 is converged by the second plano-convex lens 131 through the lens 134, and is incident on the lower surface of the fluorescent wheel 12 after being converged by the second plano-convex lens 131 to emit red laser, and the red laser is emitted through the red fluorescent region 123; when the green fluorescence area 121 of the fluorescence wheel 12 rotates to the upper side of the red-green laser group 13, the green laser emitted by the green laser 133 is converged to the second plano-convex lens 131 through the lens 135, and is incident to the lower surface of the fluorescence wheel 12 after being converged by the second plano-convex lens 131 to emit green laser, and the green laser is emitted through the green fluorescence area 121; the red laser light and the green laser light are converged by the first plano-convex lens 221 and then incident to the second reflecting mirror group 222, the second reflecting mirror group 222 reflects the incident light to the beam combining triangular prism 141, and the beam combining triangular prism 141 couples the incident light and transmits the coupled light to the third plano-convex lens 142 to form parallel light for emission.
In the embodiment of the present invention, the upper surface of the fluorescent wheel 12 has a first thin film, and the first thin film is a blue light antireflection film; the lower surface of the fluorescent wheel 12 is provided with a second film which can reflect blue light and increase the transmission of red light and green light.
The upper surface of the fluorescent wheel 12 is plated with a blue light antireflection film, so that blue light can be reflected, the utilization rate of blue light can be increased, the fluorescence emission is increased, the lower surface of the fluorescent wheel 12 is plated with a second film, blue light can be reflected, the utilization rate of blue light is increased, fluorescence is increased, and in addition, the lower surface of the fluorescent wheel 12 is plated with a second film, so that red light and green light can be reflected, the utilization rate of red laser is increased in the red fluorescent area 123, and the utilization rate of green laser is increased in the green fluorescent area 121.
According to the invention, the arrangement of the blue lasers 11 is skillfully designed, the transmission type segmented fluorescent wheel 12 is excited by the blue lasers, light spots of a plurality of blue lasers 11 are collimated, converged and shaped to be converged into one point and then excite a fluorescent region, the red, green and blue fluorescent powders are segmented and coated on the circular fluorescent wheel 12 in a fan shape, and the fluorescent wheel 12 can transmit red and green lasers, so that the blue lasers can excite the red, green and blue fluorescent powders to emit light in a time-sharing manner, so that the fluorescent wheel 12 emits fluorescent light with corresponding colors, and high-brightness white light output is realized.
It should be noted that the green phosphor and the red phosphor are coated on the rotating fluorescent wheel 12, the upper surface of the fluorescent wheel 12 is coated with a blue light antireflection film, the blue light laser irradiates the phosphors with different colors in a time-sharing manner, and the lasers with three colors are sequentially output by rotating according to a time sequence. In addition, the lower surface of the fluorescent wheel 12 is provided with a second film which can transmit blue light and can increase the transmission of red and green light, red laser and green laser can transmit red light and green light in a time-sharing manner, and the red light and the green light excited by the blue light and the light with the same color are combined into red light and green light with the same color at the same time. The light beams with the same color on both sides are finally converged into a light spot by the second light guide assembly 22. The method can be widely applied to single DLP (digital light Processing) products, and realizes high-efficiency white light output by utilizing time color mixing.
As can be seen from the above description, the laser light source device provided in the present invention has a rotatable fluorescent wheel, the fluorescent wheel has a red fluorescent region, a blue region and a green fluorescent region, in this application, the blue laser emitted from the blue laser is irradiated onto the fluorescent wheel to excite the red fluorescent region on the fluorescent wheel to emit red fluorescent light, the green fluorescent region to emit green fluorescent light, and the blue region to transmit the blue laser, further, the fluorescent wheel is further disposed above the red/green laser group, when the red fluorescent region of the fluorescent wheel rotates above the red/green laser group, the red laser is emitted through the red fluorescent region, the red fluorescent light and the red laser are simultaneously output, when the green fluorescent region of the fluorescent wheel rotates above the red/green laser group, the green laser is emitted through the green fluorescent region, the green fluorescence and the green laser are simultaneously output, and the beam combination collimation assembly couples and collimates the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission. The laser light source device provided by the invention has a simple light path structure, can effectively reduce the volume of equipment and improve the integration level.
The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other.
It should be noted that in the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A laser light source device, comprising:
a blue laser for emitting blue laser light;
a rotatable fluorescent wheel having a red fluorescent region, a blue fluorescent region, and a green fluorescent region; the red fluorescence area is excited by the blue laser to emit red fluorescence; the green fluorescence area is excited by the blue laser to emit green fluorescence; the blue light region can reflect the blue laser light;
the red and green laser group is arranged below the fluorescent wheel, emits red laser when the red fluorescent area rotates above the red fluorescent area, emits the red laser through the red fluorescent area, emits green laser when the green fluorescent area rotates above the green fluorescent area, and emits the green laser through the green fluorescent area;
and the beam combination collimation assembly is used for coupling and collimating the fluorescence emitted by the fluorescence wheel and the laser to form parallel light emission.
2. The laser light source device according to claim 1, comprising: the light guide device comprises a plurality of blue lasers and first light guide assemblies in one-to-one correspondence with the blue lasers;
the blue laser emitted by the blue laser is incident to the upper surface of the fluorescent wheel through the corresponding first light guide assembly, so that the fluorescent wheel emits or transmits fluorescent light of a corresponding color; and the fluorescence emitted by the fluorescence wheel enters the beam combination collimation assembly through the second light guide assembly.
3. The laser light source device according to claim 2, wherein the first light guide member includes: a collimating lens group and a first reflector group; and after being collimated by a collimating lens group, the blue laser emitted by the blue laser enters the first reflector group and is reflected to the upper surface of the fluorescence wheel by the first reflector group.
4. The laser light source device according to claim 2, wherein the fluorescent wheel has two green fluorescent regions disposed opposite to each other on both sides of a center thereof, two blue fluorescent regions disposed opposite to each other on both sides of a center thereof, and two red fluorescent regions disposed opposite to each other on both sides of a center thereof, all the fluorescent regions being located in a same circle on an upper surface of the fluorescent wheel.
5. The laser light source device according to claim 4, wherein a part of the blue laser is irradiated to the first region through the corresponding first light guide assembly, and another part of the blue laser is irradiated to the second region through the corresponding first light guide assembly;
the first area and the second area are two different areas of a preset plane and are positioned on two sides of the circle center; the preset plane is superposed with the upper surface of the fluorescent wheel and is positioned on the circular ring.
6. The laser light source device according to claim 5, wherein there are two second light guide assemblies, one of the second light guide assemblies is opposite to the first region and is configured to allow the light emitted from the fluorescence region corresponding to the first region to enter the beam combination collimating assembly, and the other of the second light guide assemblies is opposite to the second region and is configured to allow the light emitted from the fluorescence region corresponding to the second region to enter the beam combination collimating assembly.
7. The laser light source device according to claim 2, wherein the second light guide member includes: the first plano-convex lens and the second reflector group;
the first plano-convex lens is used for converging the light emitted by the fluorescent wheel to the second reflector group, and the second reflector group is used for reflecting the incident light to the beam combination collimation assembly.
8. The laser light source device according to claim 1, wherein the red and green laser group includes: and the emergent lasers of the red laser and the green laser are respectively converged to the same second plano-convex lens through separate lenses, and the incident light is converged to the lower surface of the fluorescent wheel by the second plano-convex lens.
9. The laser light source device according to claim 1, wherein the beam combining and collimating assembly comprises: a beam combining triangular prism and a third plano-convex lens;
the beam combining triangular prism is used for coupling incident light and transmitting the coupled incident light to the third plano-convex lens, and the third plano-convex lens is used for enabling the incident light to form parallel light to be emitted.
10. The laser light source device according to any one of claims 1 to 9, wherein the upper surface of the fluorescent wheel has a first thin film, and the first thin film is a blue light antireflection film;
the lower surface of the fluorescent wheel is provided with a second film, and the second film can reflect blue light and increase the reflection of red and green light.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116560172A (en) * | 2022-07-08 | 2023-08-08 | 深圳光峰科技股份有限公司 | Optical engine |
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| CN108169990A (en) * | 2016-12-07 | 2018-06-15 | 中航国画（上海）激光显示科技有限公司 | A kind of two-color laser light sources project machine and its control method |
| CN207676111U (en) * | 2017-11-20 | 2018-07-31 | 四川长虹电器股份有限公司 | A kind of highly effective two-color laser projection light-source system |
| CN212298636U (en) * | 2020-09-17 | 2021-01-05 | 北京镭创高科光电科技有限公司 | Laser light source device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108169990A (en) * | 2016-12-07 | 2018-06-15 | 中航国画（上海）激光显示科技有限公司 | A kind of two-color laser light sources project machine and its control method |
| CN207676111U (en) * | 2017-11-20 | 2018-07-31 | 四川长虹电器股份有限公司 | A kind of highly effective two-color laser projection light-source system |
| CN212298636U (en) * | 2020-09-17 | 2021-01-05 | 北京镭创高科光电科技有限公司 | Laser light source device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116560172A (en) * | 2022-07-08 | 2023-08-08 | 深圳光峰科技股份有限公司 | Optical engine |
| CN116560172B (en) * | 2022-07-08 | 2024-03-29 | 深圳光峰科技股份有限公司 | Optical engine |
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Address after: Room 401, room 402, building 1, Zone C, industrial square, science and Technology City, 588 Wutaishan Road, high tech Zone, Suzhou City, Jiangsu Province, 215000 Applicant after: Jiangsu radium Technology Co.,Ltd. Address before: 100176 5th floor, block B, block 19, Han's enterprise Bay, yard 8, Liangshuihe 2nd Street, Beijing Economic and Technological Development Zone, Beijing Applicant before: BEIJING LITRONICS OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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