CN217606234U - Light source system and projector - Google Patents
Light source system and projector Download PDFInfo
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- CN217606234U CN217606234U CN202221694441.2U CN202221694441U CN217606234U CN 217606234 U CN217606234 U CN 217606234U CN 202221694441 U CN202221694441 U CN 202221694441U CN 217606234 U CN217606234 U CN 217606234U
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Abstract
The utility model discloses a light source system and projecting apparatus belongs to projection technical field. The light source system comprises a light-emitting component, a reflective fluorescent wheel, a filtering component, a light path component and a light homogenizing component; the light emitting component can emit first color light; the reflective fluorescent wheel comprises at least one fluorescence excitation region, the at least one fluorescence excitation region comprising a first fluorescence excitation region; the filter assembly includes at least one color filter, wherein a first color filter is configured to transmit a second color light and at least a portion of the first color light. Through setting up the first color filter with the relative position of first fluorescence excitation area is fixed, and first color filter can see through the second chromatic light that first fluorescence excitation area arouses and the first chromatic light that at least part light emitting component sent, so just realized carrying out the effect of filtering to the fluorescence that fluorescence wheel arouses, and owing to need not to independently set up the filter wheel, solved the great problem of light source system's volume among the correlation technique, realized reducing the effect of light source system's volume.
Description
Technical Field
The utility model relates to a projection technology field, in particular to light source system and projecting apparatus.
Background
A projector is an apparatus capable of projecting an image, and generally includes a light source system, a light valve assembly and a projection lens. The light valve assembly can form an image light beam based on the various color lights provided by the light source system, and the image light beam is guided to the projection lens and is emitted out of the projector by the projection lens.
A light source system can comprise a light-emitting component, a fluorescent wheel, a light path component, a color filtering wheel and a light homogenizing component, wherein light beams emitted by the light-emitting component are emitted to the fluorescent wheel, light beams of various colors are excited on the fluorescent wheel, the light beams are emitted to the light path component, the light beams are guided to the color filtering wheel by the light path component, the light beams are filtered by the color filtering wheel and are guided to the light homogenizing component, and the light homogenizing component homogenizes the light beams and then guides the light beams out of the light source system.
However, the size of the color filter wheel in the light source system may be large, resulting in a large volume of the light source system.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a light source system and projecting apparatus. The technical scheme is as follows:
according to an aspect of the embodiments of the present invention, there is provided a light source system, which includes a light emitting module, a reflective fluorescent wheel, a light filtering module and a light uniformizing module sequentially arranged along a light path direction;
the light emitting component can emit first color light, and the light emitting direction of the light emitting component faces the reflective fluorescent wheel;
the reflective fluorescent wheel comprises at least one fluorescent excitation area, the at least one fluorescent excitation area comprises a first fluorescent excitation area, and the first fluorescent excitation area can emit second color light under the excitation of the first color light;
the light filtering component comprises at least one color filter, the at least one color filter comprises a first color filter, the first color filter is positioned on one side of the first fluorescence excitation region facing the light emitting component and is fixed in position relative to the first fluorescence excitation region, and the first color filter is configured to transmit the second color light and at least part of the first color light;
the light path component is positioned in the light emitting direction of the reflective fluorescent wheel and can guide the light beam emitted by the reflective fluorescent wheel to the light homogenizing component.
Optionally, the first color filter is configured to transmit the second color light and the first color light with an incident angle smaller than a specified angle, and reflect the first color light with an incident angle greater than or equal to the specified angle.
Optionally, the fluorescence wheel comprises at least two fluorescence excitation regions, further comprising a second fluorescence excitation region capable of emitting a third color light under excitation of the first color light;
the light filtering component comprises at least two color filters, the at least two color filters further comprise a second color filter, the second color filter is positioned on one side of the second fluorescence excitation area facing the light emitting component, the position of the second color filter relative to the second fluorescence excitation area is fixed, and the second color filter is configured to transmit the third color light and at least part of the first color light.
Optionally, the second color filter is configured to transmit the third color light and the first color light with an incident angle smaller than a specified angle, and reflect the first color light with an incident angle greater than or equal to the specified angle.
Optionally, the reflective fluorescent wheel further comprises a rotating shaft and a fluorescent turntable, the fluorescent turntable is mounted on the rotating shaft and can rotate by taking the rotating shaft as a shaft, and the at least two fluorescent excitation regions are circumferentially arranged on the fluorescent turntable;
the filtering component comprises a filtering wheel, the filtering wheel is installed on the rotating shaft and can rotate by taking the rotating shaft as a shaft, and the at least two color filters are arranged on the filtering wheel along the circumferential direction.
Optionally, the reflective fluorescent wheel further comprises a light reflecting area, and the light reflecting area and the at least two fluorescent excitation areas are arranged on the fluorescent turntable along the circumferential direction.
Optionally, the light path assembly comprises a reflector, the reflector being located between the light emitting assembly and the reflective luminescent wheel;
the speculum includes the printing opacity district and is located the outer reflection of light district of printing opacity district, light emitting component's light-emitting direction orientation the printing opacity district, reflection of light district orientation reflective fluorescence wheel and even light subassembly can with the light direction that reflective fluorescence wheel jetted out even light subassembly.
Optionally, the light source system further includes a convex lens group located between the reflector and the reflective fluorescent wheel, and an optical axis of the convex lens group passes through the transparent region of the reflector and the fluorescence excitation region of the reflective fluorescent wheel.
Optionally, the dodging assembly comprises a fly eye lens.
Optionally, the light source system further comprises a beam reducing mirror group located between the reflector and the light emitting assembly.
According to another aspect of the embodiments of the present invention, there is provided a projector including any one of the light source systems described above.
The embodiment of the utility model provides a beneficial effect that technical scheme brought includes at least:
the first color filter with the fixed relative position with the first fluorescence excitation area is arranged on one side, facing the light emitting component, of the first fluorescence excitation area of the fluorescence wheel, the first color filter can penetrate through second color light excited by the first fluorescence excitation area and at least part of first color light emitted by the light emitting component, then the first color light emitted by the light emitting component can penetrate through the first color filter to irradiate the first fluorescence excitation area and excite the second color light, the second color light can penetrate through the first color filter and irradiate the first color filter to the light path component after being subjected to filtering processing, and the second color light is guided to the dodging component by the light path component.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a light source system;
fig. 2 is a schematic structural diagram of a light source system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another light source system provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of another light source system provided in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of another light source system provided in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a reflective fluorescent wheel in a light source system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a filter assembly in a light source system according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of a filter assembly and a reflective luminescent wheel in a light source system according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of a filter assembly and a reflective fluorescent wheel in a light source system according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another light source system provided in the embodiment of the present invention;
fig. 11 is a schematic structural diagram of a projector according to an embodiment of the present invention.
With the above figures, certain embodiments of the present invention have been shown and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The projector may include a light source system, a light valve, a projection lens, and the like, wherein the light source system may include a laser light source system, a conventional light bulb system, and the like. The laser light source system can use laser to excite the fluorescence conversion material, generates fluorescence with different colors as a light source, and compared with the traditional bulb light source system, the laser light source system which generates fluorescence through laser excitation has the characteristics of high brightness, bright color, low energy consumption and long service life, so that the projection equipment has the characteristics of high picture contrast and clear imaging.
Fluorescence is the emission of light from a substance after absorption of light or other electromagnetic radiation. That is, when a substance is irradiated with incident light of a certain wavelength, the substance absorbs light energy and enters an excited state, and immediately is de-excited and emits light having such a property that the emitted light having a wavelength longer than that of the incident light (generally, the wavelength is in a visible light band), which is called fluorescence.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a light source system, and the light source system 10 includes a laser 101, a light path component 102, a fluorescent wheel 103, a color filter wheel 104, and a light uniformizing component 105. The phosphor assembly 103 includes a phosphor region for exciting the phosphor and a reflector region for the beam emitted by the laser 101.
The light beam emitted by the laser 101 can pass through the light path component 102 and irradiate onto the fluorescent wheel 103, and fluorescence is excited on the fluorescent wheel 103, and the fluorescence is reflected by the fluorescent wheel 103 to the light path component 102, and is reflected by the light path component 102 to the filtering color wheel 104, so as to be filtered by the filtering color wheel 104, and the light beam filtered by the filtering color wheel 104 passes through the filtering color wheel and irradiates to the light homogenizing component 105, and the light homogenizing component 105 homogenizes the light beam and emits the light beam out of the light source system.
However, in the light source system, the size of the color filter wheel 104 may be larger, and particularly when the light uniformizing element is a fly-eye lens, the size of the light spot required by the fly-eye lens is larger, and then the size of the color filter wheel 104 is also larger, which seriously affects the overall size of the light source system and is not favorable for miniaturization of the projector.
Fig. 2 is a schematic structural diagram of a light source system provided by an embodiment of the present invention, and the light source system 20 includes a light emitting component 21, a reflective fluorescent wheel 22, a filter component 23, a light path component 24, and a dodging component 25, which are sequentially arranged along a light path direction.
The light emitting element 21 is capable of emitting a first color light, and a light emitting direction of the light emitting element 21 faces the reflective luminescent wheel 22.
The reflective fluorescent wheel 22 includes at least one fluorescent excitation region including a first fluorescent excitation region q1, and the first fluorescent excitation region q1 is capable of emitting a second color light under excitation of the first color light.
The filtering member 23 includes at least one color filter including a first color filter 231, the first color filter 231 is located at a side of the first fluorescence excitation region q1 facing the light emitting member 21, and a relative position with the first fluorescence excitation region q1 is fixed, the first color filter 231 is configured to transmit the second color light and at least a part of the first color light.
The light path assembly 24 is located in the light emitting direction of the reflective luminescent wheel 22, and can guide the light beam emitted from the reflective luminescent wheel 22 to the light uniformizing assembly 25.
The color filter can be coated with a film or made of a specific material, so that the color filter can transmit the light beam in the specified wavelength range and reflect the light beam in the specific wavelength range, and the function of transmitting the second color light and at least part of the first color light can be realized.
To sum up, the embodiment of the present invention provides a light source system, set up the first color filter fixed with the relative position of first fluorescence excitation zone through the first fluorescence excitation zone towards one side of light emitting component at the fluorescence wheel, and this first color filter can see through the second chromatic light that first fluorescence excitation zone excites and the first chromatic light that at least part of light emitting component sent, and then the first chromatic light that light emitting component sent just can shine first fluorescence excitation zone through first color filter, and excite the second chromatic light, this second chromatic light can see through first color filter, and shine the light path subassembly after being carried out filtering processing by first color filter, by the light path subassembly with even light path subassembly of second chromatic light direction, so just realized carrying out the effect of filtering to the fluorescence that fluorescence excited by the fluorescence wheel, and owing to need not to independently set up the filter wheel, and then can not influence the volume of light source system yet, the great problem of the volume of light source system in the correlation technique has been solved, the effect of the volume of light source system has been reduced.
Fig. 3 is a schematic structural diagram of another light source system according to an embodiment of the present invention, and fig. 3 is a diagram of some adjustments based on the light source system shown in fig. 2. Wherein, the light path assembly 24 includes a reflector 241, and the reflector 241 is located between the light emitting assembly 21 and the reflective fluorescent wheel 22.
The reflector 241 includes a light-transmitting region q2 and a light-reflecting region q3 located outside the light-transmitting region q2, the light-emitting direction of the light-emitting assembly 21 faces the light-transmitting region q2, the light-reflecting region q3 faces the reflective fluorescent wheel 22 and the light-homogenizing assembly 25, and the light emitted from the reflective fluorescent wheel 22 can be guided to the light-homogenizing assembly 25.
The reflective region q3 of the reflector 241 may surround the transparent region q2, and in the reflector 241 having a structure, the transparent region q2 may be provided with a transparent material, such as transparent glass or a transparent resin material, and the reflective region may be coated with a reflective material, or the reflective region may be made of a reflective material. The light reflecting area can be a diffuse reflection area, so that the first color light can be diffusely reflected after being irradiated to the light reflecting area, and the first color light and the excited fluorescence can be adjusted by a subsequent optical structure.
In another structure of the reflector 241, the light-transmitting region q2 may be an open region, and the light-reflecting region q3 may be coated with a light-reflecting material, or the light-reflecting region q3 may be made of a light-reflecting material.
In the light source system shown in fig. 3, the light beam emitted from the light emitting element 21 can pass through the transparent region q2 to be emitted toward the reflective luminescent wheel 22. The light beam can excite fluorescence on the reflective fluorescent wheel 22, and the fluorescence can be reflected to the reflective region q3 of the reflector 241 by the reflective fluorescent wheel 22, and then the fluorescence is reflected to the dodging assembly 25 by the reflective region q3, and then the dodging assembly 25 performs the dodging process.
It should be noted that, in the embodiment of the present invention, the light emitting direction of the light emitting element 21 faces the light transmitting area q2, which may mean that the direction of the light beam emitted by the light emitting element 21 faces the light transmitting area q2, and can pass through the light transmitting area q2. The light emitting assembly 21 may include a light source (such as a laser light source or a light emitting diode light source), or the light emitting assembly 21 may include a light source and other structures that can process the light beam emitted from the light source, change the direction of the light beam, or shrink the light beam. If the light emitting element 21 includes a structure capable of changing the direction of the light beam emitted from the light source, the changed direction of the light beam is directed to the light transmitting region q2 of the reflector 241. The embodiment of the utility model provides an use light emitting component 21 to explain as the example for laser light emitting component 21, be that light emitting component 21 can be used for providing laser beam also, this laser beam can be monochromatic laser beam.
In an exemplary embodiment, please refer to fig. 4, fig. 4 is a schematic structural diagram of another light source system according to an embodiment of the present invention, wherein the light source system 20 further includes a beam reduction lens group 26 located between the reflector and the light emitting assembly. The beam reduction lens group 26 may be configured to perform beam reduction processing on the light beam emitted by the light emitting assembly 21, so as to adjust and control the light beam, for example, other structures in the light source system may be convenient to avoid the light beam (for example, the light beam may easily pass through a light transmission region of the reflector), and in addition, the beam reduction lens group 26 may reduce the size of a light spot on the reflective luminescent wheel irradiated by the light beam, and further may reduce the size of the reflective luminescent wheel, which is beneficial to miniaturization of the light source system and the projector.
In an exemplary embodiment, the beam reduction lens group 26 may include a first convex lens 261 and a first concave lens 262, and the first concave lens 261 is located on a side of the first convex lens 261 far away from the light emitting assembly 21. The first convex lens 261 may be configured to receive the light beam emitted by the light emitting unit 21, process the light beam and guide the light beam to the first concave lens 262, and the first concave lens 262 may guide the light beam out of the lens group 25 after processing the light beam. The parallel light beam can be reduced to a parallel light beam with a smaller spot by the first convex lens 261 and the first concave lens 262.
Certainly, the embodiment of the present invention provides a beam reducing mirror group 26 in a light source system can also be other structures, and the embodiment of the present invention does not limit this.
In an exemplary embodiment, please refer to fig. 5, fig. 5 is a schematic structural diagram of another light source system provided by the embodiment of the present invention, wherein the light source system 20 further includes a convex lens group 27 located between the reflector 241 and the reflective luminescent wheel 22, and an optical axis z of the convex lens group 27 passes through a light-transmitting area q2 of the reflector 241 and a luminescent excitation area q1 of the reflective luminescent wheel 22. The convex lens group 27 can be used to adjust the light beam reflected by the fluorescent wheel so that the light beam reflected by the fluorescent wheel approaches a parallel light beam and is emitted to the reflective region q3 of the reflector 241.
Illustratively, the convex lens group 27 may include two convex lenses, such as a first convex lens 271 and a second convex lens 272, the first convex lens 271 is located on a side of the second convex lens 272 close to the reflector 241, and an optical axis of the first convex lens 271 is coincident with (may be substantially coincident with) an optical axis of the second convex lens 272, and a main optical axis of the light beam emitted by the light emitting assembly 21 may also be coincident with the optical axes of the first convex lens 271 and the second convex lens 272.
In an exemplary embodiment, the first color filter 231 is configured to transmit the second color light and the first color light having an incident angle smaller than a designated angle, and reflect the first color light having an incident angle greater than or equal to the designated angle. In one embodiment, the first color light with an incident angle smaller than the predetermined angle may refer to the first color light emitted by the light emitting component 21 and first transmitted through the first color filter 231, and then the first color light is emitted to the first fluorescence excitation region q1 through the first color filter 231, a part of the first color light excites the phosphor in the first fluorescence excitation region q1 to generate fluorescence, and another part of the first color light is directly reflected by the first fluorescence excitation region q1, and this reflected light may be referred to as first color reflected light, and the first color reflected light is emitted divergently, and the incident angle of the first color reflected light on the first color filter 231 is large, and most of the incident angle may be larger than the predetermined angle, and further, in the embodiment, the first color light 231 is configured to reflect the first color light with an incident angle larger than or equal to the predetermined angle, and most of the first color reflected light in the first fluorescence excitation region q1 to re-excite fluorescence, and the first color light transmitted through the first color filter with an incident angle smaller than the predetermined angle may be configured to prevent the first color light from being reflected to the first fluorescence excitation region q1 when the first color filter 231 is emitted to the first color light. Therefore, the excitation efficiency of fluorescence can be improved, the loss of the first colored light emitted by the light emitting component is reduced, and the light emitting efficiency of the light source system is improved.
The embodiment of the utility model provides an in, can be through the mode of coating film on the color filter to make first color filter can see through the first chromatic light that incident angle is less than the appointed angle, and reflect the function of the first chromatic light that incident angle is more than or equal to the appointed angle. In the embodiment of the present invention, the designated angle may be 10 degrees, the first color light may be blue light, and the second color light may be green light. The light emitting assembly may comprise a blue laser. On this basis, the first color filter 231 can transmit green light and blue light with an incident angle of 0 to 10 degrees and reflect blue light with an incident angle of 10 degrees or more.
Please refer to fig. 6. Fig. 6 is a schematic structural diagram of a reflective fluorescent wheel in a light source system according to an embodiment of the present invention (for example, the reflective fluorescent wheel may be a top view of the reflective fluorescent wheel in the light source system shown in fig. 5), where the reflective fluorescent wheel includes at least two fluorescent excitation regions, the at least two fluorescent excitation regions include a first fluorescent excitation region q1 and a second fluorescent excitation region q4, the first fluorescent excitation region q1 can emit second color light under excitation of the first color light, and the second fluorescent excitation region q4 can emit third color light under excitation of the first color light. The first color light may be blue light, one of the second color light and the third color light may be red light, and the other color light may be green light. The first fluorescence excitation region q1 and the second fluorescence excitation region q4 may be arranged in the circumferential direction on the fluorescence wheel.
Please refer to fig. 7. Fig. 7 is a schematic structural diagram of a filter component in a light source system according to an embodiment of the present invention (for example, the schematic structural diagram may be a top view of the filter component in the light source system shown in fig. 5), where the filter component 23 includes at least two color filters, the at least two color filters include a first color filter 231 and a second color filter 232, the second color filter 232 is located on a side of the second fluorescence excitation region facing the light emitting component, and is fixed in relative position with the second fluorescence excitation region, and the second color filter 232 is configured to transmit the third color light and at least a portion of the first color light.
In an exemplary embodiment, the second color filter 232 is configured to transmit the third color light and the first color light having an incident angle smaller than a designated angle and reflect the first color light having an incident angle greater than or equal to the designated angle. The first color light with an incident angle smaller than the designated angle may refer to the first color light emitted by the light emitting element and first transmitted through the first color filter 231, at this time, the first color light is emitted toward the first color filter 231 at a smaller incident angle, and then transmitted through the first color filter 231 and emitted toward the first fluorescence excitation region, a part of the first color light excites the phosphor in the first fluorescence excitation region to generate fluorescence, another part of the first color light is directly reflected by the first fluorescence excitation region, the reflected light may be referred to as first color reflected light, the first color reflected light emits in a divergent shape, the incident angle of the first color reflected light on the first color filter 231 is larger, most of the incident angle may be larger than the designated angle, further, in the embodiment of the present invention, the first color filter 231 is configured to reflect the first color light with an incident angle larger than or equal to the designated angle, that most of the first color reflected on the first fluorescence excitation region to re-excite fluorescence, and the first color light 231 is configured to transmit the first color light with an incident angle smaller than the designated angle, so as to avoid the first color light being reflected by the first color filter 231 for the first time. Therefore, the excitation efficiency of fluorescence can be improved, the loss of the first colored light emitted by the light emitting component is reduced, and the light emitting efficiency of the light source system is improved.
The embodiment of the utility model provides an in, can be through the mode of coating film on the color filter to make the second color filter can see through the first chromatic light that incident angle is less than the appointed angle, and reflect the function of the first chromatic light that incident angle is more than or equal to the appointed angle. In the embodiment of the present invention, the designated angle may be 10 degrees, the first color light may be blue light, and the third color light may be red light. The light emitting assembly may comprise a blue laser. On the basis, the second color filter can transmit red light and blue light with the incident angle of 0-10 degrees and reflect the blue light with the incident angle of more than or equal to 10 degrees.
Referring to fig. 8, fig. 8 is a schematic perspective view illustrating a filter assembly and a reflective fluorescent wheel in a light source system according to an embodiment of the present invention. Wherein the light emitting assembly may be positioned at an upper side of the filter assembly 23.
As can be seen from fig. 8, the first color filter 231 is located on a side of the first fluorescence excitation region q1 facing the light emitting component 21, and a relative position with respect to the first fluorescence excitation region q1 is fixed, and the first color filter 231 is configured to transmit the second color light and at least a part of the first color light.
The second color filter 232 is located on a side of the second fluorescence excitation region q4 facing the light emitting component, and a relative position with the second fluorescence excitation region is fixed, and the second color filter 232 is configured to transmit the third color light and at least a part of the first color light.
In an exemplary embodiment, the reflective fluorescent wheel 22 further includes a rotating shaft 221 and a fluorescent turntable 222, the fluorescent turntable 222 is mounted on the rotating shaft 221 and can rotate around the rotating shaft 221, and at least two fluorescent excitation regions (including a first fluorescent excitation region q1 and a second fluorescent excitation region q 4) are circumferentially arranged on the fluorescent turntable 222.
The filter assembly 23 includes a filter wheel w, the filter wheel w is mounted on the rotating shaft 221 and can rotate around the rotating shaft 221, and at least two color filters (including a first color filter 231 and a second color filter 232) are circumferentially arranged on the filter wheel.
The utility model relates to a plurality of structures A (like light filter and fluorescence excitation district) arrange along circumference on another structure B, can indicate that a plurality of structures A arrange around structure B's center.
Referring to fig. 9, fig. 9 is a schematic perspective view illustrating a filter assembly and a reflective fluorescent wheel in a light source system according to an embodiment of the present invention. Wherein the light emitting assembly may be positioned at an upper side of the filter assembly 23.
The reflective luminescent wheel 22 further includes a light reflecting region q5, the light reflecting region q5 and at least two fluorescence excitation regions (including a first fluorescence excitation region q1 and a second fluorescence excitation region q 4) are arranged along a circumferential direction on the luminescent turntable 222.
Correspondingly, the light-transmitting region 233 of the filter 23 is located on a side of the light-reflecting region q5 facing the light-emitting component, and the light-transmitting region 233 is used for transmitting the first color light reflected by the light-reflecting region q5 on the reflective fluorescent wheel 22. The light-transmitting region may be an opening region or a region made of a light-transmitting material.
It should be noted that, in the embodiment of the present invention, the distance between the filter assembly and the reflective fluorescent wheel may not be as shown in fig. 8 and 9, and the embodiment of the present invention does not limit this.
Of course, in the light source system provided in the embodiment of the present invention, the optical filter in the optical filter assembly may also be attached to the fluorescence excitation area of the reflective fluorescence wheel, for example, a transparent adhesive layer may be coated on the fluorescence excitation area, and then the optical filter is disposed on the transparent adhesive layer, so as to attach the optical filter to the fluorescence excitation area.
Referring to fig. 10, fig. 10 is a schematic structural diagram of another light source system according to an embodiment of the present invention, wherein the light uniformizing element 25 is a fly-eye lens. The fly-eye lens is a lens formed by combining a series of micro lenses, and the double-row fly-eye lens array is applied to a light source system and can obtain higher light energy utilization rate and large-area uniform illumination. However, compared with other types of light homogenizing assemblies, the fly-eye lens has a large requirement on the size of a light spot, and if a color filter wheel in the related art is used for filtering light, the size of the color filter wheel is large, the overall size of a light source system is greatly influenced, and further the miniaturization of a projector is seriously influenced. And the embodiment of the utility model provides an in the light source system that provides, set up the mode of color filter at reflective fluorescence wheel towards one side of light-emitting component and filter to need not to set up the great color wheel that strains of size alone, realized the effect that can reduce light source system's volume, and be favorable to the miniaturization of projecting apparatus.
Furthermore, the embodiment of the utility model provides a light source system can also include focusing mirror group 27, and focusing mirror group 27 is located dodging subassembly 25's light-emitting direction for reduce image light beam's spot size.
To sum up, the embodiment of the utility model provides a light source system, through the first fluorescence excitation district at the fluorescence wheel towards one side of light emitting component set up with the first color filter of the relative position fixing in first fluorescence excitation district, and this first color filter can see through the first chromatic light that first fluorescence excitation district excitated out and the first chromatic light that at least part light emitting component sent, and then the first chromatic light that light emitting component sent just can shine first fluorescence excitation district through first color filter, and excite the second chromatic light, this second chromatic light can see through first color filter, and shine the light path subassembly after carrying out filtering processing by first color filter, by light path subassembly with second chromatic light direction fly-eye lens, so just realized carrying out the effect of filtering to the fluorescence that the fluorescence excited out of fluorescence wheel, and owing to need not the independent setting filter wheel, and then can not influence light source system's volume yet, the great problem of light source system's volume in the correlation technique has been solved, the effect of the volume that has reduced light source system has been realized.
Fig. 11 is a schematic structural diagram of a projector according to an embodiment of the present invention, which includes a light valve assembly 30, a projection lens 40, and any of the light source systems 20 provided in the embodiments.
The light valve assembly 30 includes a first light valve 31, a second light valve 31, and a prism assembly 33, where the prism assembly 33 may be a Polarization Beam Splitter (PBS), and the PBS can split incident unpolarized light into two vertically linearly polarized lights. Wherein the P polarized light is directly transmitted, and the S polarized light is reflected at an angle of 45 degrees, and the outgoing direction forms an angle of 90 degrees with the P light. The polarization splitting prism can be formed by gluing a pair of right-angle prisms, wherein the hypotenuse of one right-angle prism is coated with a polarization splitting medium film. The first light valve 31 and the second light valve 32 may be liquid crystal on silicon light valves.
As shown in fig. 11, the light source system 20 can be divided into three colors of color lights by the prism assembly 33, wherein the three colors of color lights are divided into S polarized light and P polarized light by the prism assembly 33, the S polarized light enters the first light valve 31, the P polarized light enters the second light valve 32, the two polarized lights are phase-deflected by the phase plate 171 and the phase plate 172, and then transmitted or reflected by the prism assembly 33 to the projection lens, and then exit the projector from the projection lens, and form an image on the screen.
To sum up, the embodiment of the utility model provides a projector, light source system in this projector sets up the first color filter fixed with the relative position of first fluorescence excitation zone through the first fluorescence excitation zone at the fluorescence wheel towards one side of light emitting component, and this first color filter can see through the second chromatic light that first fluorescence excitation zone arouses and the first chromatic light that at least part light emitting component sent, and then the first chromatic light that light emitting component sent just can pass through first color filter and shine first fluorescence excitation zone, and arouse the second chromatic light, this second chromatic light can see through first color filter, and carry out filtering treatment back directive light path subassembly by first color filter, guide fly-eye lens with second chromatic light by the light path subassembly, so just realized carrying out the effect of filtering to the fluorescence that the fluorescence arouses the fluorescence wheel, and owing to need not to independently set up the filter wheel, and then can not influence light source system's volume yet, the great problem of light source system's volume in the correlation technique has been solved, the effect of reducing light source system has been realized. Further, the size of the projector can be reduced, which is advantageous for miniaturization of the projector.
In the present application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A light source system is characterized by comprising a light-emitting component, a reflective fluorescent wheel, a filtering component, a light path component and a light homogenizing component;
the light emitting component can emit first color light, and the light emitting direction of the light emitting component faces the reflective fluorescent wheel;
the reflective fluorescent wheel comprises at least one fluorescent excitation area, and the at least one fluorescent excitation area comprises a first fluorescent excitation area which can emit second color light under the excitation of the first color light;
the light filtering component comprises at least one color filter, the at least one color filter comprises a first color filter, the first color filter is positioned on one side of the first fluorescence excitation area facing the light emitting component, and the relative position of the first color filter and the first fluorescence excitation area is fixed, and the first color filter is configured to transmit the second color light and at least part of the first color light;
the light path component is positioned in the light emitting direction of the reflective fluorescent wheel and can guide the light beam emitted by the reflective fluorescent wheel to the light uniformizing component.
2. The light source system according to claim 1, wherein the first color filter is configured to transmit the second color light and the first color light having an incident angle smaller than a prescribed angle, and to reflect the first color light having an incident angle greater than or equal to the prescribed angle.
3. The light source system of claim 1, wherein the fluorescent wheel comprises at least two fluorescent excitation regions, the at least two fluorescent excitation regions further comprising a second fluorescent excitation region capable of emitting a third color of light under excitation of the first color of light;
the light filtering component comprises at least two color filters, the at least two color filters further comprise a second color filter, the second color filter is positioned on one side of the second fluorescence excitation area facing the light emitting component, the position of the second color filter relative to the second fluorescence excitation area is fixed, and the second color filter is configured to transmit the third color light and at least part of the first color light.
4. The light source system according to claim 3, wherein the second color filter is configured to transmit the third color light and the first color light having an incident angle smaller than a prescribed angle and reflect the first color light having an incident angle greater than or equal to the prescribed angle.
5. The light source system of claim 3, wherein the reflective fluorescent wheel further comprises a rotating shaft and a fluorescent turntable, the fluorescent turntable is mounted on the rotating shaft and can rotate around the rotating shaft, and the at least two fluorescent excitation regions are circumferentially arranged on the fluorescent turntable;
the filtering component comprises a filtering wheel, the filtering wheel is installed on the rotating shaft and can rotate by taking the rotating shaft as a shaft, and the at least two color filters are arranged on the filtering wheel along the circumferential direction.
6. The light source system of claim 5, wherein the reflective fluorescent wheel further comprises a light reflecting area, and the light reflecting area and the at least two fluorescence excitation areas are arranged circumferentially on the fluorescent turntable.
7. The light source system of claim 1, wherein the light path assembly comprises a mirror positioned between the light emitting assembly and the reflective phosphor wheel;
the speculum includes the printing opacity district and is located the outer reflection of light district of printing opacity district, light emitting component's light-emitting direction orientation the printing opacity district, reflection of light district orientation reflective fluorescence wheel and even light subassembly can with the light direction that reflective fluorescence wheel jetted out even light subassembly.
8. The light source system of claim 7, further comprising a convex lens group between the reflector and the reflective luminescent wheel, an optical axis of the convex lens group passing through the transmissive region of the reflector and the luminescent excitation region of the reflective luminescent wheel.
9. The light source system of claim 7, wherein the dodging assembly comprises a fly eye lens.
10. A projector characterized in that it comprises a light source system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221694441.2U CN217606234U (en) | 2022-06-30 | 2022-06-30 | Light source system and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221694441.2U CN217606234U (en) | 2022-06-30 | 2022-06-30 | Light source system and projector |
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| Publication Number | Publication Date |
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| CN217606234U true CN217606234U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221694441.2U Active CN217606234U (en) | 2022-06-30 | 2022-06-30 | Light source system and projector |
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| CN (1) | CN217606234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023179661A1 (en) * | 2022-03-22 | 2023-09-28 | 青岛海信激光显示股份有限公司 | Laser light source system and projection device |
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2022
- 2022-06-30 CN CN202221694441.2U patent/CN217606234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023179661A1 (en) * | 2022-03-22 | 2023-09-28 | 青岛海信激光显示股份有限公司 | Laser light source system and projection device |
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