CN210488227U - Fluorescent roller module, light source and projector - Google Patents
Fluorescent roller module, light source and projector Download PDFInfo
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- CN210488227U CN210488227U CN201922263812.6U CN201922263812U CN210488227U CN 210488227 U CN210488227 U CN 210488227U CN 201922263812 U CN201922263812 U CN 201922263812U CN 210488227 U CN210488227 U CN 210488227U
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Abstract
The utility model provides a fluorescent roller module, a light source and a projector, which relate to the technical field of projectors, and the fluorescent roller module provided by the utility model has a light conduction station and a wavelength conversion station; the fluorescent drum module is configured to be rotated to switch between the light conduction station and the wavelength conversion station. The utility model provides a fluorescence cylinder module can reduce the light loss, improves conversion efficiency.
Description
Technical Field
The utility model belongs to the technical field of the projector technique and specifically relates to a fluorescence cylinder module, light source and projector are related to.
Background
The power of the laser projector is increased, and the volume of the laser projector is increased according to the heat dissipation requirement. Taking the cylindrical wavelength conversion device as an example, as the power of the projector increases, in order to ensure that the heat dissipation performance of the cylindrical wavelength conversion device is good, the radial size of the drum module also increases, so that the height size of the projector increases, and the stability of the projector is adversely affected. In addition, the single beam blue light that the laser sent can't be through current fluorescence cylinder module, and the projector need add the laser instrument and provide the blue light, and not only the optical loss is higher, and the light path is complicated moreover, will lead to the size further increase of projector.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fluorescence cylinder module, light source and projector can directly realize the blue light-emitting, reduces the optical loss, improves conversion efficiency.
In a first aspect, the present invention provides a fluorescent roller module having a light conduction station and a wavelength conversion station; the fluorescent drum module is configured to be rotated to switch between the light conduction station and the wavelength conversion station.
With reference to the first aspect, the present disclosure provides a first possible implementation manner of the first aspect, wherein the fluorescent drum module comprises a base body; from the wavelength conversion station to the light transmission station, a wavelength conversion portion and a light transmission portion are provided one by one on the base body.
With reference to the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the base body is enclosed to form an accommodating area, and a light guide device is arranged in the accommodating area; the substrate is configured to rotate about the containment region to switch between the light conduction station and the wavelength conversion station; at the light conduction station, the light rays emitted into the fluorescent roller module are emitted out through the light transmission part and the light guide device; and at the wavelength conversion station, the light rays emitted into the fluorescent roller module are processed by the substrate and emitted.
In combination with the second possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the light guide device includes a light guide rod.
With reference to the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein an extending direction of the light guiding rod has an included angle smaller than 90 degrees with a rotation axis of the base body; at the light conduction station, the light rays emitted into the fluorescent roller module are emitted into the light guide rod through the light transmission part, and the light rays processed by the light guide rod are emitted to the outside of the accommodating area.
With reference to the third possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the light transmission portion includes: the first side opening and the second side opening are arranged at intervals and are respectively arranged on the base body; at the light conduction station, the light guide extends from the first side opening to the second side opening.
In combination with the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the base body is connected to a rotor of the driving device in a transmission manner, and the light guide device is connected to a stator of the driving device, so that the base body rotates relative to the light guide device.
In combination with the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the base body is connected to the light guide device, so that the base body and the light guide device rotate synchronously.
With reference to the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the rotation axis of the fluorescent drum module extends in a vertical direction.
In a second aspect, the present invention provides a light source, including the fluorescent roller module provided in the first aspect; the light source is provided with a first light path and a second light path, emergent light of the fluorescent roller module at the light conduction station is emitted into the first light path, and emergent light of the fluorescent roller module at the wavelength conversion station is emitted into the second light path; the light source is configured to combine the light entering the first light path and the light entering the second light path and emit the combined light.
With reference to the second aspect, the present invention provides a first possible implementation manner of the second aspect, wherein the light source includes: a light combining device and a light path guiding device; emergent light of one of the first light path and the second light path is emitted into the light path guiding device and is processed by the light path guiding device to be emitted into the light combining device; emergent light of the other of the first light path and the second light path is emitted into the light combining device; the light combining device is used for combining light and emitting the light.
In a second aspect, the present invention provides a projector having a fluorescent drum module provided by the first aspect.
The embodiment of the utility model provides a following beneficial effect has been brought: the fluorescence cylinder module has light conduction station and wavelength conversion station, and the fluorescence cylinder module can directly realize the blue light-emitting under the condition of not addding the blue laser instrument when being applied to blue light excitation through rotatory in order to switch between light conduction station and wavelength conversion station, is favorable to reducing the optical loss, improves conversion efficiency.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first cross-sectional view of a first fluorescent drum module according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a second fluorescent drum module according to an embodiment of the present invention;
fig. 3 is a second cross-sectional view of a first fluorescent drum module according to an embodiment of the present invention;
fig. 4 is a front view of a third fluorescent drum module according to an embodiment of the present invention;
fig. 5 is a schematic view of a light source according to an embodiment of the present invention.
Icon: 100-a substrate; 101-a holding area; 110-a light transmitting section; 111-first side open; 112-a second side opening; 120-a wavelength converting portion; 121-a first transition zone; 122-a second transition zone; 200-a light guide; 300-a drive device; 400-a light combining device; 410-a light splitting sheet; 420-a first lens; 430-a light pipe; 500-an excitation light source; 510-a laser source; 520-a fourth lens; 530-collimating lens; 540-a third diffuser; 600-an optical path directing device; 610-a first mirror; 620-a second mirror; 630-a third mirror; 001-first optical path; 002-second optical path; z-vertical direction.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present embodiment is described in terms of excitation and conduction of blue light. In fact, the present invention is applicable to the excitation and conduction of light in any wavelength range. Example one
As shown in fig. 1 and 2, the fluorescent roller module according to the embodiment of the present invention has a light conduction station and a wavelength conversion station; the fluorescent drum module is configured to be rotated to switch between the light conduction station and the wavelength conversion station. Wherein, fluorescence cylinder module can switch between light conduction station and wavelength conversion station through the rotation, realizes the blue light-emitting at the light conduction station, realizes wavelength conversion at the wavelength conversion station and handles, need not to add the blue laser ware, has solved the unable technical problem that directly provides the blue light of fluorescence cylinder module, helps the light path to simplify, can reduce the optical loss, improves conversion efficiency. It should be noted that the fluorescence cylinder module realizes the switching of light conduction station and wavelength conversion station through the rotation, and the switching process motion is more steady compared with reciprocating type translation motion, and in the wavelength conversion station, each section can realize steady switching in the light path, and at the light conduction station, blue light, red light or yellow light can be handled and emit through the fluorescence cylinder module.
Further, the rotation axis of the fluorescent drum module extends in the vertical direction Z.
Specifically, the rotation axis of fluorescence cylinder module extends along vertical direction Z, for the radiating efficiency who improves fluorescence cylinder module, can increase the radial dimension of fluorescence cylinder module, and can not lead to the thickness size increase of fluorescence cylinder module. The axial dimension of the fluorescent roller module can be configured to be 3cm to 4.5cm, for example: 3.5cm or 4cm, so that the fluorescent roller module can be used for manufacturing an ultrathin portable laser projector.
In the embodiment of the present invention, the fluorescent drum module includes a base 100; from the wavelength conversion station to the light transmission station, the substrate 100 is provided with the wavelength conversion portion 120 and the light transmission portion 110 one by one.
Specifically, at the light transmission station, light transmission portion 110 is located in the light path; at the wavelength conversion station, the wavelength converting region 120 is located in the optical path. Drive base member 100 is rotatory around the axis that extends along vertical direction Z, and wavelength conversion portion 120 and light transmission portion 110 pass through the light path in turn, and when light transmission portion 110 located the light path, the blue light can be transmitted through the fluorescence cylinder module to need not increase blue laser alright form blue light path.
Further, the substrate 100 is surrounded to form an accommodating area 101, and the light guide device 200 is arranged in the accommodating area 101; the substrate 100 is configured to rotate about the containment region 101 to switch between the light conduction station and the wavelength conversion station; at the light conduction station, the light rays emitted into the fluorescent roller module are emitted through the light transmission part 110 and the light guide device 200; at the wavelength conversion station, light incident on the fluorescent roller module is processed by the substrate 100 and emitted.
Specifically, the blue light may be processed and transmitted through the light guide device 200, and the substrate 100 rotates around the accommodating area 101, so as to be switched to the light conduction station or the wavelength conversion station. The light guide device 200 may employ a blue reflector or a lens.
In this embodiment, the light guide device 200 includes a light guide rod. The blue light emitted into the light guide rod through the light transmission part 110 is transmitted along the light guide rod, and the light guide rod may be a solid or hollow glass rod. The light guide rod has a light homogenizing effect on the blue light, so that the blue light can be transmitted without damage, and the thickness of the fluorescent roller module is not required to be increased for arranging the light guide rod.
Further, the end face of the light guide rod may be coated with a fluorescent wavelength converter so as to be able to generate partial excitation, for example, blue light with excitation light of 455 nm. The end face of the light guide rod is coated with the blue powder, the 455nm blue light which is partially excited is projected to enter the light guide rod, the 490nm long-wave blue light which is partially excited by the fluorophor is reflected and does not enter the light guide rod, the blue light diversification can be realized according to the thickness of the fluorophor, namely the exciting proportion of the thickness control part of the blue powder, and the blue color saturation can be enhanced.
As shown in fig. 1 and 3, the base body 100 is drivingly connected to a rotor of the driving device 300, and the light guide device 200 is connected to a stator of the driving device 300, so that the base body 100 rotates relative to the light guide device 200.
Specifically, the light guide device 200 is connected to the stator of the driving device 300, the light guide device 200 is fixed with respect to the optical path of the incident light, the blue light entering the light guide device 200 can be transmitted along the light guide device 200, the extending direction of the light guide device 200 is parallel to the transmission direction of the blue light, the loss in the blue light transmission process can be reduced, and the blue light efficiency is further improved. During rotation of the base body 100, when the light transmission portion 110 is located in the optical path of the light guide device 200, light is incident into the light guide device 200 through the light transmission portion 110 and exits through the light guide device 200. When the wavelength converting part 120 is located in the optical path of the light guide device 200, the light guide device 200 is shielded by the wavelength converting part 120, and the light is processed and reflected by the wavelength converting part 120.
As shown in fig. 2, the base body 100 is connected with the light guide 200 so that the base body 100 and the light guide 200 are rotated in synchronization.
Specifically, the sidewall of the base 100 is provided with holes along the radial direction, and the light guide device 200 is inserted into the holes and extends along the radial direction of the base 100. The base body 100 and the light guide device 200 are rotated synchronously about the axis of the base body 100 to effect switching between the light conduction station and the wavelength conversion station.
As shown in fig. 2 and 3, light transmission section 110 includes: a first side opening 111 and a second side opening 112, wherein the first side opening 111 and the second side opening 112 are arranged at intervals and are respectively arranged on the substrate 100; at the light conduction station, the light guide device 200 extends from the first side opening 111 toward the second side opening 112. The substrate 100 encloses a receiving area 101 with a circular cross section, and the light guide device 200 extends along the radial direction of the receiving area 101. In the light conduction station, the light guide device 200 extends from the first side opening 111 to the second side opening 112, light enters the light guide device 200 through one of the first side opening 111 and the second side opening 112, and blue light transmitted by the light guide device 200 exits through the other of the first side opening 111 and the second side opening 112. At the wavelength conversion station, the light is emitted to the wavelength conversion portion 120, and the wavelength conversion portion 120 can convert the excitation light into stimulated light and reflect the stimulated light.
Further, the wavelength conversion section 120 includes: the first and second transition areas 121 and 122, the first and second side openings 111 and 112 are disposed on both sides of the accommodating area 101 along a diameter of the accommodating area 101 in a one-to-one correspondence, and the first and second transition areas 121 and 122 are symmetrically disposed with respect to the diameter. The substrate 100 may be switched from the wavelength conversion station to the light conduction station once every 180 degrees of rotation about the axis of the receiving area 101. The wavelength conversion station and the light conduction station are switched according to a certain period by the rotation of the substrate 100, so that the excited light and the blue light can be sequentially generated and emitted according to a time sequence.
As shown in FIGS. 3 and 4, the extending direction of the light guide rod has an angle of less than 90 degrees with the rotational axis of the substrate 100; at the light conduction station, the light emitted into the fluorescent roller module enters the light guide rod through the light transmission part 110, and the light processed by the light guide rod is emitted to the outside of the accommodating area 101.
Specifically, at the light conduction station, the light entering the fluorescent drum module enters one end of the light guide rod through the light transmission part 110, the other end of the light guide rod tilts towards the outside of the accommodating area 101, and the light emitted by the light guide rod can be directly emitted to the outside of the accommodating area 101, so that the light loss is further reduced. It should be noted that, in the condition that the angle between the extending direction of the light guide rod and the rotation axis of the substrate 100 is less than 90 degrees, the light transmission part 110 may be configured as an opening provided on the side wall of the substrate 100, and when the substrate 100 rotates 360 degrees, there is only one light transmission station. The wavelength conversion part 120 has continuous color segments, and in the process of being at the light conduction station, the conversion regions of the color segments are continuously subjected to light processing and generate corresponding stimulated light, so that the light-emitting brightness and the color effect are better.
Example two
As shown in fig. 2, 3 and 5, the light source provided by the embodiment of the present invention includes a fluorescent roller module provided by the first embodiment; the light source is provided with a first light path 001 and a second light path 002, emergent light of the fluorescent roller module at the light conduction station is emitted into the first light path 001, and emergent light of the fluorescent roller module at the wavelength conversion station is emitted into the second light path 002; the light source is arranged to combine the light beam incident on the first optical path 001 and the light beam incident on the second optical path 002 and emit them.
In some embodiments, the first optical path 001 coincides with the second optical path 002, and the blue light emitted through the first optical path 001 and the stimulated light emitted through the second optical path 002 are combined and emitted.
In this embodiment, the first light path 001 and the second light path 002 have an included angle, and the light path guiding device 600 may guide blue light or laser light, so that the blue light emitted from the first light path 001 and the stimulated light emitted from the second light path 002 are combined and emitted.
In an embodiment of the present invention, the light source includes: a light combining device 400 and a light path directing device 600; the emergent light of one of the first light path 001 and the second light path 002 is emitted into the light path guiding device 600 and is processed by the light path guiding device 600 to be emitted into the light combining device 400; the other of the light emitted from the first optical path 001 and the second optical path 002 is incident on the light combining device 400; the light combining device 400 is used to combine light and emit the light.
Specifically, the light combining device 400 includes a light splitting sheet 410, and the excitation light emitted from the excitation light source 500 is processed by the light splitting sheet 410 and is emitted into the fluorescent drum module. At the wavelength conversion station, the wavelength conversion part 120 converts the excitation light into the stimulated light, and reflects the stimulated light to the spectroscopic sheet 410, and the stimulated light is emitted after being transmitted through the spectroscopic sheet 410. At the light conduction station, light rays are emitted into the light guide device 200, blue light emitted from the light guide device 200 is emitted into the light path guide device 600, the blue light is emitted into the light splitting sheet 410 under the guide of the light path guide device 600, and the blue light processed by the light splitting sheet 410 is emitted along the same direction of the received laser, so that light combination is realized. Alternatively, the light combining device 400 is disposed on the light exit side of the light guide device 200, and the blue light emitted through the light guide device 200 is incident on the light combining device 400. The received laser light processed by the wavelength conversion part 120 is incident on the optical path guiding device 600, and is transmitted by the optical path guiding device 600 to be incident on the light combining device 400, so that the combination of the blue light and the received laser light is realized.
Further, the light combining device 400 further includes a first lens 420, the blue light and the received laser light emitted from the light combining device 400 are emitted into the first lens 420, and the first lens 420 performs light combining processing on the blue light and the received laser light.
Further, the light combining device 400 further includes a light guide 430, the first lens 420 guides the blue light and the received light into the light guide 430, and the blue light and the received light are further combined at the light guide 430 and emitted to the outside of the light source.
Further, the optical path directing device 600 includes: a first reflective mirror 610, a second reflective mirror 620, and a third reflective mirror 630; the blue light or the laser light emitted from the fluorescent drum module is incident on the first reflective mirror 610, the first reflective mirror 610 guides the light to be incident on the second reflective mirror 620, the light is guided by the second reflective mirror 620 to be incident on the third reflective mirror 630, and the light is processed by the third reflective mirror 630 to be incident on the light combining device 400. A second lens is disposed between the first reflective mirror 610 and the second reflective mirror 620, a third lens and a first diffusion sheet are disposed between the second reflective mirror 620 and the third reflective mirror 630, and a second diffusion sheet is disposed between the third reflective mirror 630 and the light combining device 400. The first lens 420, the second lens and the third lens may be convex lenses, and the light transmitted along the light path guiding device 600 may be homogenized through the light path guiding device 600. It should be noted that, under the condition that the included angle between the extending direction of the light guide rod and the rotation axis of the substrate 100 is less than 90 degrees, the first reflective mirror 610 and the second reflective mirror 620 should be respectively tilted, so that the light directly emitted from the light guide device 200 is transmitted to the third reflective mirror 630, and is reflected to the light combining device 400 through the third reflective mirror 630.
Further, the excitation light source 500 includes: a laser source 510, a fourth lens 520, a collimating lens 530, and a third diffusion sheet 540; the laser source 510 emits excitation light and emits the excitation light to the fourth lens 520, the fourth lens 520 is a convex lens, the excitation light processed by the fourth lens 520 emits to the collimating lens 530, the light processed by the collimating lens 530 emits to the third diffusion sheet 540, the excitation light emitted by the third diffusion sheet 540 emits to the light splitting sheet 410, and the excitation light is processed by the light splitting sheet 410 and emits to the fluorescent drum module.
EXAMPLE III
As shown in fig. 1, a projector according to an embodiment of the present invention is provided with a fluorescent drum module according to an embodiment. Adopt fluorescence cylinder module, and fluorescence cylinder module is through rotatory in order to switch between light conduction station and wavelength conversion station, and the rotation axis of fluorescence cylinder module extends along vertical direction Z to can reduce the thickness dimension of projector for assembling the configuration of fluorescence cylinder module, and then be applicable to the ultra-thin projector of preparation thickness dimension less than 4cm, in order to satisfy the market demand of portable official working.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (12)
1. A fluorescent roller module having a light conduction station and a wavelength conversion station;
the fluorescent roller module comprises a base body (100);
the substrate (100) is drivingly connected to a rotor of a drive device (300), and the substrate (100) is configured to be rotated to switch between the light transmission station and the wavelength conversion station, from the wavelength conversion station to the light transmission station, the substrate (100) being provided with a wavelength converting portion (120) and a light transmitting portion (110) one by one.
2. The fluorescent drum module set according to claim 1, wherein the base body (100) is enclosed to form an accommodating area (101), and a light guide device (200) is arranged in the accommodating area (101);
the substrate (100) is configured to rotate about the containment region (101) to switch between the light conduction station and the wavelength conversion station;
at the light conduction station, the light rays emitted into the fluorescent roller module are emitted through the light transmission part (110) and the light guide device (200);
at the wavelength conversion station, the light rays emitted into the fluorescent roller module are processed by the substrate (100) and emitted.
3. The fluorescent drum module according to claim 2, wherein the light guide (200) comprises a light guide rod.
4. The fluorescence drum module according to claim 3, characterized in that the extending direction of the light guiding rod has an angle smaller than 90 degrees with the rotation axis of the substrate (100);
in the light conduction station, the light rays emitted into the fluorescent roller module are emitted into the light guide rod through the light transmission part (110), and the light rays processed by the light guide rod are emitted to the outside of the accommodating area (101).
5. The fluorescent drum module according to claim 4, wherein the light transmission part (110) comprises one opening disposed on a side wall of the accommodating area (101) and forms the wavelength conversion part (120) into a continuous color segment.
6. The fluorescence drum module according to claim 3, wherein the light transmission part (110) comprises: a first side opening (111) and a second side opening (112), wherein the first side opening (111) and the second side opening (112) are arranged at intervals and are respectively arranged on the base body (100);
at the light conduction station, the light guide rod extends from the first side opening (111) to the second side opening (112).
7. The fluorescent drum module according to any of claims 4-6, wherein the light guide (200) is connected with a stator of a driving means (300) for rotating the base body (100) relative to the light guide (200).
8. The fluorescent drum module according to any of claims 4-6, wherein the base body (100) is connected with the light guide (200) such that the base body (100) and the light guide (200) rotate synchronously.
9. The fluorescence cylinder module of claim 1, wherein the axis of rotation of the fluorescence cylinder module extends in a vertical direction.
10. A light source comprising the fluorescent roller module of any of claims 1-9;
the light source is provided with a first light path (001) and a second light path (002), emergent light of the fluorescent roller module at the light conduction station is emitted into the first light path (001), and emergent light of the fluorescent roller module at the wavelength conversion station is emitted into the second light path (002);
the light source is configured to combine the light beam entering the first optical path (001) and the light beam entering the second optical path (002) and emit the combined light.
11. The light source in accordance with claim 10, wherein the light source comprises: a light combining device (400) and an optical path guiding device (600);
the emergent light of one of the first light path (001) and the second light path (002) is emitted into the light path guiding device (600), and is processed by the light path guiding device (600) to be emitted into the light combining device (400);
the other emergent light of the first light path (001) and the second light path (002) is emitted into the light combining device (400);
the light combining device (400) is used for combining light and emitting the light.
12. A projector provided with the fluorescent drum module according to any one of claims 1 to 9.
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| CN201922263812.6U CN210488227U (en) | 2019-12-16 | 2019-12-16 | Fluorescent roller module, light source and projector |
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| CN201922263812.6U CN210488227U (en) | 2019-12-16 | 2019-12-16 | Fluorescent roller module, light source and projector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120718A1 (en) * | 2019-12-16 | 2021-06-24 | 无锡视美乐激光显示科技有限公司 | Fluorescence roller module, light source and projector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120718A1 (en) * | 2019-12-16 | 2021-06-24 | 无锡视美乐激光显示科技有限公司 | Fluorescence roller module, light source and projector |
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