WO2021120718A1

WO2021120718A1 - Fluorescence roller module, light source and projector

Info

Publication number: WO2021120718A1
Application number: PCT/CN2020/114601
Authority: WO
Inventors: 王强; 陈龙; 康庆
Original assignee: 无锡视美乐激光显示科技有限公司
Priority date: 2019-12-16
Filing date: 2020-09-10
Publication date: 2021-06-24
Also published as: CN112987468A

Abstract

Provided are a fluorescence roller module, a light source and a projector, relating to the technical field of projectors. The fluorescence roller module has a light conduction station and a wavelength conversion station; the fluorescence roller module is configured to switch between the light conduction station and the wavelength conversion station by means of rotation; and the axis of rotation of the fluorescence roller module extends in a vertical direction. The fluorescence roller module can reduce light loss and improve conversion efficiency.

Description

Fluorescent roller module, light source and projector

Cross-references to related applications

This application claims the priority of the Chinese patent application with the application number CN201911299556.4 and the name "Fluorescent Roller Module, Light Source and Projector" filed with the Chinese Patent Office on December 16, 2019. The entire content of the patent application is incorporated herein by reference. Applying.

Technical field

The present disclosure relates to the technical field of projectors, in particular to a fluorescent roller module, a light source and a projector.

Background technique

The power of the laser projector increases, and its volume also increases according to its heat dissipation needs. Take the cylindrical wavelength conversion device as an example. As the power of the projector increases, in order to ensure good heat dissipation performance of the cylindrical wavelength conversion device, the radial size of the drum module also needs to be increased, which leads to an increase in the height of the projector and thus It will adversely affect the stability of the projector. In addition, a single beam of blue light emitted by the laser cannot pass through the existing fluorescent roller module, and the projector needs to be equipped with a laser to provide blue light, which not only has high optical loss, but also has a complex optical path, which will further increase the size of the projector.

Summary of the invention

The purpose of the present disclosure includes, for example, providing a fluorescent roller module, a light source, and a projector, which can directly emit blue light, reduce light loss, and improve conversion efficiency.

The fluorescent roller module provided according to the embodiment of the present disclosure has a light transmission station and a wavelength conversion station; the fluorescent roller module is configured to rotate between the light transmission station and the wavelength conversion station. Switch between.

Optionally, the fluorescent roller module includes a substrate; from the wavelength conversion station to the light transmission station, a wavelength conversion part and a light transmission part are provided on the substrate one by one.

Optionally, the base body is surrounded to form an accommodating area, and a light guide device is arranged in the accommodating area; Switch between wavelength conversion stations; at the light transmission station, the light entering the fluorescent roller module is emitted through the light transmission part and the light guide device; at the wavelength conversion station, the light enters The light of the fluorescent roller module is processed by the substrate and emitted.

Optionally, the light guide device includes a light guide rod.

Optionally, the extending direction of the light guide device and the rotation axis of the base have an included angle equal to or less than 90 degrees; at the light transmission station, the light entering the fluorescent roller module passes through the The light transmission part is incident on the light guide rod, and the light processed by the light guide rod is emitted to the outside of the containing area.

Optionally, the light transmission part includes an opening provided on a side wall of the accommodating area, the number of the opening is one, and the wavelength conversion part forms a continuous wavelength conversion color segment.

Optionally, the light transmissive part includes: a first side opening and a second side opening arranged on the side wall of the accommodating area, the first side opening and the second side opening are arranged at intervals, and respectively Is arranged on the substrate; in the light transmission station, the light guide device extends from the first side opening to the second side opening.

Optionally, one end of the base is provided with a drive device, and the drive device includes a stator and a rotor; the base is in transmission connection with the rotor of the drive device, and the light guide device is connected with the stator of the drive device so that the The base body rotates relative to the light guide device.

Optionally, the base body is connected to the light guide device, so that the base body and the light guide device rotate synchronously.

Optionally, the rotation axis of the fluorescent roller module extends in a vertical direction perpendicular or approximately perpendicular to the optical axis.

Optionally, the side wall of the base is provided with holes along the radial direction, and the light guide device is inserted in the hole and extends along the radial direction of the base.

Optionally, the fluorescent drum module undergoes one or two switching between the wavelength conversion station and the light transmission station every 360 degrees of rotation.

The light source provided by the embodiment of the present disclosure includes the fluorescent roller module according to the embodiment of the present disclosure; the light source has a first light path and a second light path, and the fluorescent roller module emits light at the light conducting station The light emitted from the fluorescent roller module at the wavelength conversion station enters the second optical path; the light source is configured to make the light entering the first optical path and the incident light The light rays of the second light path are combined and emitted.

Optionally, the light source includes: a light combining device and a light path guiding device; the emitted light of one of the first light path and the second light path is incident on the light path guiding device, and is processed by the light path guiding device. The light from the other of the first light path and the second light path enters the light combining device; the light combining device is configured to combine light and emit the light.

Optionally, the light source further includes an excitation light source, the excitation light source includes a laser source, a fourth lens, a collimator lens, and a third diffuser, the laser source is configured to emit excitation light, and the collimator lens The excitation light emitted by the laser source and processed by the fourth lens is received and collimated, and the third diffusion sheet is configured to make the excitation light more uniform.

Optionally, the light combining device further includes a first lens configured to receive the blue light and the received laser light emitted by the light combining device, and perform light combining processing on them.

Optionally, the light combining device further includes a light pipe configured to receive the blue light and the received laser light emitted by the first lens, and further combine the light and send them out of the light source. Projected.

Optionally, the optical path guiding device includes a first reflector, a second reflector, and a third reflector, and the first reflector, the second reflector, and the third reflector are configured to pass through the fluorescent light. The blue light emitted by the drum module or guided by the laser enters the light combining device.

The projector provided by the embodiment of the present disclosure is provided with the fluorescent roller module provided according to the embodiment of the present disclosure.

The embodiments of the present disclosure can achieve, for example, the following beneficial effects: the fluorescent drum module has a light transmission station and a wavelength conversion station, and the fluorescent drum module rotates to switch between the light transmission station and the wavelength conversion station. The present disclosure provides When the fluorescent roller module of Fluorescent roller module is applied to blue light excitation, it can directly realize blue light emission without adding a blue laser, which is beneficial to reduce light loss and improve conversion efficiency.

In order to make the above objectives, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with accompanying drawings are described in detail as follows.

Description of the drawings

In order to more clearly explain the technical solutions in the specific embodiments of the present disclosure or related technologies, the following will briefly introduce the drawings that need to be used in the specific embodiments or related technical descriptions. Obviously, the drawings in the following description are For some of the embodiments of the present disclosure, for those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.

FIG. 1 is a first cross-sectional view of the first fluorescent roller module provided by an embodiment of the disclosure;

2 is a cross-sectional view of a second fluorescent roller module provided by an embodiment of the disclosure;

3 is a second cross-sectional view of the first fluorescent roller module provided by an embodiment of the disclosure;

4 is a front view of a third type of fluorescent roller module provided by an embodiment of the disclosure;

FIG. 5 is a schematic diagram of a light source provided by an embodiment of the disclosure.

Icon: 100-substrate; 101-accommodating area; 110-light transmission part; 111-first side opening; 112-second side opening; 120-wavelength conversion part; 121-first conversion area; 122-second conversion Area; 200-light guide device; 300-drive device; 400-light combining device; 410-light splitter; 420-first lens; 430-light pipe; 500-excitation light source; 510-laser source; 520-fourth Lens; 530-collimating lens; 540-third diffuser; 600-light path guiding device; 610-first mirror; 620-second mirror; 630-third mirror; 001-first optical path; 002- The second light path; Z-vertical direction.

Detailed ways

The technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be construed as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The physical quantity in the formula, if not separately labeled, should be understood as the basic quantity of the basic unit of the International System of Units, or the derived quantity derived from the basic quantity through mathematical operations such as multiplication, division, differentiation, or integration.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

This embodiment is described in terms of excitation and conduction of blue light. In fact, the present disclosure is applicable to the excitation and conduction of light in any wavelength range.

As shown in Figures 1 and 2, the fluorescent roller module provided by the embodiment of the present disclosure has a light transmission station and a wavelength conversion station; the fluorescent roller module is configured to rotate in the light transmission station and the wavelength conversion station. Switch between bits. Among them, the fluorescent drum module can be switched between the light transmission station and the wavelength conversion station by rotating, the blue light emission is realized at the light transmission station, and the wavelength conversion processing is realized at the wavelength conversion station. There is no need to add a blue laser, which solves the problem of fluorescence. The technical problem that the roller module cannot directly provide blue light helps simplify the light path, reduces light loss, and improves conversion efficiency. It should be noted that the fluorescent roller module realizes the switching between the light transmission station and the wavelength conversion station through rotation. The movement of the switching process is more stable than the reciprocating translational movement. In the wavelength conversion station, each color segment can be in the light path. In the light transmission station, the blue, red or yellow light can be processed by the fluorescent roller module and emitted.

Further, the rotation axis of the fluorescent roller module extends along a vertical direction Z perpendicular or approximately perpendicular to the optical axis.

Specifically, the rotation axis of the fluorescent roller module extends along the vertical direction Z perpendicular or approximately perpendicular to the optical axis. In order to improve the heat dissipation efficiency of the fluorescent roller module, the radial size of the fluorescent roller module can be increased without As a result, the thickness of the fluorescent roller module is increased. The axial dimension of the fluorescent roller module can be configured to be 3 cm to 4.5 cm, for example, 3.5 cm or 4 cm, so that the fluorescent roller module can be configured to make an ultra-thin portable laser projector.

In the embodiment of the present disclosure, the fluorescent roller module includes a substrate 100; from the wavelength conversion station to the light transmission station, the substrate 100 is provided with a wavelength conversion portion 120 and a light transmission portion 110 one by one.

Specifically, in one embodiment, as shown in the axial cross-section of FIG. 1 and the cross-section of FIG. 2, the base 100 is cylindrical, and the base 100 is provided with light on the circumferential surface of the cylinder. The transmissive part 110 and the wavelength conversion part 120, and the base 100 is provided with a light guide device 200 inside. Preferably, the light guide device 200 extends along the diameter of the cross section of the base 100, and each end of the light guide device 200 for receiving incident light and transmitting light corresponds to each side opening of the light transmitting portion 110. The base 100 is provided with a driving device 300 at one end, such as the top or bottom, so that the base 100 can be rotated to switch between the light transmission station and the wavelength conversion station. In the embodiment shown in FIG. 1, the driving device 300 is disposed at the bottom of the base body 100.

In the light transmission station, the light transmission part 110 is located in the optical path; in the wavelength conversion station, the wavelength conversion part 120 is located in the optical path. The drive substrate 100 rotates around an axis extending along the vertical direction Z perpendicular or approximately perpendicular to the optical axis. The wavelength conversion portion 120 and the light transmission portion 110 alternately pass through the optical path. When the light transmission portion 110 is arranged in the optical path, the blue light can pass through the fluorescent roller mold. Group transmission, so that the blue light path can be formed without adding a blue laser.

Further, the base 100 is surrounded to form a accommodating area 101, and a light guide device 200 is provided in the accommodating area 101; the base 100 is configured to rotate around the accommodating area 101 to switch between the light transmission station and the wavelength conversion station In the light transmission station, the light entering the fluorescent roller module is emitted through the light transmission part 110 and the light guide device 200; at the wavelength conversion station, the light entering the fluorescent roller module is processed by the substrate 100 and emitted.

Specifically, the blue light can be processed and transmitted by the light guide device 200, and the base 100 rotates around the accommodating area 101 to switch to the light transmission station or the wavelength conversion station. The light guide device 200 may adopt a blue reflector or a lens.

In this embodiment, the light guide device 200 includes a light guide rod. The blue light incident on 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 homogenizing effect on the blue light, which can not only transmit the blue light losslessly, but also does not need to increase the thickness of the fluorescent roller module for setting the light guide rod.

Further, the end surface of the light guide rod may be coated with a fluorescent wavelength converter, so as to generate partial excitation, for example, blue light with an excitation light of 455 nm. Coating blue powder on the end surface of the light guide rod, part of the excited 455nm blue light is projected into the light guide rod, and part of the excited phosphor reflects the 490nm long-wave blue light, which does not enter the light rod. It can be based on the thickness of the phosphor, that is, the thickness of the blue powder. Control the proportion of partial excitation, realize the diversification of blue light, and enhance the color saturation of blue.

As shown in FIGS. 1 and 3, the driving device 300 includes a stator and a rotor. The base body 100 is in transmission connection with the rotor of the driving device 300, and the light guide device 200 is connected to the stator of the driving device 300 so that the base body 100 is relative to the light guide device 200. Spin.

Specifically, the light guide device 200 is connected to the stator of the driving device 300. The light guide device 200 is fixed relative to the optical path of the incident light. The blue light incident on the light guide device 200 can be transmitted along the light guide device 200. The extension direction of the light guide device 200 Parallel to the transmission direction of the blue light, it can reduce the loss during the blue light transmission process, thereby increasing the efficiency of the blue light. During the rotation of the base 100, when the light transmission part 110 is located in the light path of the light guide device 200, light enters the light guide device 200 through the light transmission part 110 and exits through the light guide device 200. When the wavelength conversion part 120 is located in the optical path of the light guide device 200, the wavelength conversion part 120 shields the light guide device 200, and the light is processed and reflected by the wavelength conversion part 120.

As shown in FIG. 2, the base 100 is connected to the light guide device 200 so that the base 100 and the light guide device 200 rotate synchronously.

Specifically, a side wall (for example, a cylindrical side wall) of the base 100 is provided with holes along the radial direction, and the light guide device 200 is inserted in the hole and extends along the radial direction of the base 100. The base 100 and the light guide device 200 rotate synchronously around the axis of the base 100 to realize switching between the light transmission station and the wavelength conversion station.

As shown in FIGS. 2 and 3, the light transmitting portion 110 includes: a first side opening 111 and a second side opening 112, the first side opening 111 and the second side opening 112 are spaced apart and are respectively provided on the base 100; In the conduction station, the light guide device 200 extends from the first side opening 111 to the second side opening 112. Wherein, the base body 100 surrounds 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 transmission station, the light guide device 200 extends from the first side opening 111 to the second side opening 112, and the light enters the light guide device 200 through one of the first side opening 111 and the second side opening 112. The blue light transmitted by the optical device 200 is emitted through the other of the first side opening 111 and the second side opening 112. In the wavelength conversion station, the light is directed to the wavelength conversion part 120, and the wavelength conversion part 120 can convert the excitation light into the received laser light and reflect it.

Further, the wavelength conversion portion 120 includes: a first conversion area 121 and a second conversion area 122. The first side opening 111 and the second side opening 112 are arranged in the accommodating area 101 along a diameter of the accommodating area 101 in a one-to-one correspondence. 2 and 3, the first side opening 111 and the second side opening 112 of the light transmission part 110 and the first conversion area 121 and the second conversion area 122 of the wavelength conversion part 120 may surround The entire cylindrical surface of the base 100, and the side openings of the light transmission part 110 and the conversion regions of the wavelength conversion part 120 are alternately arranged along the cylindrical surface, so that the rotation of the base 100 causes light to be selectively directed to the light transmission part 110 Or the wavelength conversion part 120, so as to realize the switching between the light transmission station and the wavelength conversion station of the fluorescent roller module.

The rotation of the base body 100 realizes the switching of the wavelength conversion station and the light transmission station in a certain period, so that the received laser light and blue light can be sequentially generated and emitted according to a time sequence. Preferably, in the embodiment shown in FIG. 3, the first conversion area 121 and the second conversion area 122 are symmetrically arranged with respect to the diameter, so that the substrate 100 can experience a wavelength every 180 degrees of the axis of the accommodating area 101. Switching between the conversion station and the light transmission station, after one rotation of 180 degrees, the fluorescent roller module enters the next switching cycle between the wavelength conversion station and the light transmission station.

In this embodiment, it can be considered that the switching cycle of the fluorescent roller module is 180 degrees. It is understandable that the switching period of the fluorescent roller module can also be other angles, such as 360, that is, the fluorescent roller module needs to undergo a switch between the light transmission station and the wavelength conversion station and enter the next light transmission station. Turn 360 degrees. In other words, the fluorescent roller module can undergo one or two switching between the wavelength conversion station and the light transmission station every 360 degrees of rotation.

As shown in Figures 3 and 4, the extending direction of the light guide rod and the rotation axis of the base 100 have an included angle of less than 90 degrees; at the light transmission station, the light entering the fluorescent roller module enters through the light transmission part 110 The light guide rod, the light processed by the light guide rod is emitted to the outside of the accommodating area 101.

Specifically, at the light transmission station, the light entering the fluorescent roller module enters one end of the light guide rod through the light transmission part 110, and the other end of the light guide rod is tilted toward the outside of the accommodating area 101. As shown in the cross-sectional view in FIG. 4, one end of the light guide device 200 and the cross section of the base are in the same plane, and the other end of the light guide device extends beyond the cross section of the base. In this case, the light guide device is at a certain angle with the cross section of the base, and the included angle with the rotation axis of the base is less than 90 degrees. The light emitted through the light guide rod can be directly emitted to the outside of the accommodating area 101, which further reduces the light loss. It should be noted that under the condition that the angle between the extending direction of the light guide rod and the rotation axis of the base 100 is less than 90 degrees, the light transmitting portion 110 may be configured as an opening provided on the side wall of the base 100. When rotating 360 degrees, there is only one light transmission station. The wavelength conversion section 120 has continuous wavelength conversion color segments. In the process of the light transmission station, the conversion regions of each color segment continue to perform light processing and generate corresponding laser light, which can make the light output brightness and color effect better.

As shown in Figures 2, 3, and 5, the light source provided by the embodiment of the present disclosure includes the fluorescent roller module provided by the embodiment of the present disclosure; the light source has a first light path 001 and a second light path 002, and the fluorescent roller module is in The emitted light from the light transmission station enters the first optical path 001, and the emitted light from the fluorescent roller module at the wavelength conversion station enters the second optical path 002; the light source is configured to cause the light entering the first optical path 001 to enter the second optical path 002; The light rays of the two light paths 002 are combined and emitted.

In some embodiments, the first light path 001 overlaps the second light path 002, and the blue light emitted through the first light path 001 and the receiving laser light emitted through the second light path 002 are combined and emitted.

In this embodiment, the first light path 001 and the second light path 002 have an angle, and the light path guiding device 600 can guide blue light or received laser light, thereby combining the blue light emitted by the first light path 001 and the received laser light emitted by the second light path 002. And shoot out.

In the embodiment of the present disclosure, the light source includes: a light combining device 400 and a light path guiding device 600; the emitted light of one of the first light path 001 and the second light path 002 enters the light path guiding device 600, and is processed by the light path guiding device 600. The light combining device 400; the light emitted from the other of the first light path 001 and the second light path 002 enters the light combining device 400; the light combining device 400 is configured 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 to enter the fluorescent roller module. In the wavelength conversion station, the wavelength conversion unit 120 converts the excitation light into the received laser light, and reflects the received laser light to the beam splitter 410, and the received laser light passes through the beam splitter 410 and is emitted. In the light transmission station, light enters the light guide device 200, and the blue light emitted by the light guide device 200 enters the light path guide device 600. The blue light can be guided by the light path guide device 600 to inject the blue light into the beam splitter 410. After being processed by the beam splitter 410 The blue light is emitted in the same direction as the laser, so as to achieve light combining. Alternatively, the light combining device 400 is disposed on the light exit side of the light guiding device 200, and the blue light emitted through the light guiding device 200 is incident on the light combining device 400. The received laser light formed by the processing of the wavelength conversion unit 120 enters the optical path guiding device 600, and is transmitted through the optical path guiding device 600 to cause the received laser light to enter the light combining device 400, thereby realizing the combination of blue light and the received laser light.

Further, the light combining device 400 further includes a first lens 420. The blue light and the received laser light emitted by the light combining device 400 are incident on the first lens 420, and the blue light and the received laser light are combined through the first lens 420.

Further, the light combining device 400 further includes a light pipe 430. The first lens 420 guides the blue light and the received laser light into the light pipe 430, and the blue light and the received laser light are further combined in the light pipe 430 and emitted out of the light source.

Further, the light path guiding device 600 includes at least one reflector. Specifically, in the embodiment shown in FIG. 5, the light path guiding device 600 includes: a first mirror 610, a second mirror 620, and a third mirror 630; Into the first mirror 610, the first mirror 610 guides the light into the second mirror 620, and then the second mirror 620 guides the light into the third mirror 630, and is processed by the third mirror 630 so that the light is emitted.入合光装置400。 Into the optical device 400. Wherein, a second lens is provided between the first reflector 610 and the second reflector 620, a third lens and a first diffuser are provided between the second reflector 620 and the third reflector 630, and the third reflector 630 A second diffusion sheet is arranged between the light combining device 400 and the light combining device 400. The first lens 420, the second lens, and the third lens can all be convex lenses, and the light transmitted along the light path guiding device 600 can be homogenized through the light path guiding device 600. It should be noted that under the condition that the angle between the extending direction of the light guide rod and the axis of rotation of the base 100 is less than 90 degrees, the first reflector 610 and the second reflector 620 should be respectively tilted accordingly, so that the light guide The light directly emitted from the device 200 is transmitted to the third mirror 630 and reflected by the third mirror 630 to the light combining device 400.

Further, the excitation light source 500 includes: a laser source 510, a fourth lens 520, a collimator lens 530, and a third diffuser 540; the laser source 510 emits excitation light and enters the fourth lens 520. The fourth lens 520 is a convex lens. The excitation light processed by the fourth lens 520 enters the collimator lens 530, the light processed by the collimator lens 530 enters the third diffuser 540, and the excitation light emitted by the third diffuser 540 enters the beam splitter 410. After being processed by the beam splitter 410, it is injected into the fluorescent roller module.

As shown in FIG. 1, the projector provided by the embodiment of the present disclosure is provided with the fluorescent roller module provided by the embodiment of the present disclosure. The fluorescent roller module is adopted, and the fluorescent roller module is rotated to switch between the light transmission station and the wavelength conversion station. The rotation axis of the fluorescent roller module extends in the vertical direction Z, so that the assembly of the projector can be reduced. The thickness of the fluorescent roller module configuration is further suitable for making ultra-thin projectors with a thickness of less than 4cm to meet the market demand for portable offices.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit it; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present disclosure. range.

Industrial applicability

The embodiment of the present disclosure provides a fluorescent roller module, which can be switched between the light transmission station and the wavelength conversion station by rotation. The blue light emission is realized at the light transmission station, and the wavelength conversion processing is realized at the wavelength conversion station, so there is no need to add a blue laser, which solves the technical problem that the fluorescent roller module cannot directly provide blue light, which helps simplify the light path and reduces light loss. Improve conversion efficiency. The embodiments of the present disclosure provide a light source including the fluorescent roller module, which can combine blue light and received laser light to emit, without the need to add a special laser to provide blue light. The embodiment of the present disclosure also provides a projector provided with a fluorescent roller module. Since the rotation axis of the fluorescent roller module extends in the vertical direction Z, the thickness of the projector for assembling the fluorescent roller module can be reduced, thereby It is suitable for making ultra-thin projectors with small thickness to meet the market demand of portable office.

Claims

A fluorescent roller module, characterized in that the fluorescent roller module has a light transmission station and a wavelength conversion station;

The fluorescent roller module is configured to rotate to switch between the light transmission station and the wavelength conversion station.
The fluorescent roller module according to claim 1, wherein the fluorescent roller module comprises a base (100);

From the wavelength conversion station to the light transmission station, the substrate (100) is provided with a wavelength conversion part (120) and a light transmission part (110) one by one.
The fluorescent roller module according to claim 2, wherein the base body (100) is surrounded to form a accommodating area (101), and a light guide device (200) is arranged in the accommodating area (101);

The base body (100) is configured to rotate around the accommodating area (101) to switch between the light transmission station and the wavelength conversion station;

In the light transmission station, the light entering the fluorescent roller module is emitted through the light transmission part (110) and the light guide device (200);

In the wavelength conversion station, the light entering the fluorescent roller module is processed by the substrate (100) and emitted.
The fluorescent roller module according to claim 3, wherein the light guide device (200) comprises a light guide rod.
The fluorescent roller module according to claim 3 or 4, wherein the extending direction of the light guide device (200) and the rotation axis of the base body (100) have an included angle equal to or less than 90 degrees;

In the light transmission station, the light entering the fluorescent roller module enters the light guide rod through the light transmission part (110), and the light processed by the light guide rod exits to the accommodating The outside of the area (101).
The fluorescent roller module according to any one of claims 2-5, wherein the light transmission portion (110) comprises an opening provided on a side wall of the accommodating area (101), and the opening The number is one, and the wavelength conversion part (120) forms a continuous wavelength conversion color segment.
The fluorescent roller module according to any one of claims 2-5, wherein the light transmission portion (110) comprises a first side opening provided on the side wall of the containing area (101) (111) and a second side opening (112), the first side opening (111) and the second side opening (112) are arranged at intervals and are respectively arranged on the base body (100);

In the light transmission station, the light guide rod extends from the first side opening (111) to the second side opening (112).
The fluorescent roller module according to any one of claims 3-7, wherein a driving device (300) is provided at one end of the base (100), and the driving device (300) comprises a stator and a rotor The base (100) is connected to the rotor of the drive device (300) in transmission, and the light guide device (200) is connected to the stator of the drive device (300) so that the base (100) is relative to the light guide The device (200) rotates.
The fluorescent roller module according to any one of claims 3-7, wherein the base (100) is connected to the light guide device (200), so that the base (100) and the The light guide device (200) rotates synchronously.
The fluorescent roller module according to any one of claims 1-9, wherein the rotation axis of the fluorescent roller module extends in a vertical direction perpendicular or approximately perpendicular to the optical axis.
The fluorescent roller module according to claim 9 or 10, wherein the side wall of the base body (100) is provided with holes along the radial direction, and the light guide device (200) is inserted in the holes And extend along the radial direction of the base body (100).
The fluorescent roller module according to any one of claims 1-11, wherein the fluorescent roller module undergoes one or two switching of the wavelength conversion station and the light transmission station every 360 degrees of rotation.
A light source, characterized by comprising the fluorescent roller module according to any one of claims 1-12;

The light source has a first light path (001) and a second light path (002), the light emitted from the fluorescent roller module at the light transmission station enters the first light path (001), and the fluorescent roller mold The emitted light grouped at the wavelength conversion station enters the second optical path (002);

The light source is configured to combine the light incident on the first optical path (001) and the light incident on the second optical path (002), and emit the light.
The light source according to claim 11, wherein the light source comprises: a light combining device (400) and a light path guiding device (600);

The emitted light of one of the first optical path (001) and the second optical path (002) enters the optical path guiding device (600), and is processed by the optical path guiding device (600) to enter the combined light Device (400);

The other outgoing light of the first light path (001) and the second light path (002) enters the light combining device (400);

The light combining device (400) is configured to combine light and emit light.
The light source according to claim 13 or 14, wherein the light source further comprises an excitation light source (500), and the excitation light source (500) comprises a laser source (510), a fourth lens (520), and a collimator lens (530) and a third diffuser (540), the laser source (510) is configured to emit excitation light, and the collimator lens (530) receives the laser beam emitted by the laser source (510) after passing through the The excitation light processed by the four lenses (520) is collimated, and the third diffuser (540) is configured to make the excitation light more uniform.
The light source according to claim 14 or 15, wherein the light combining device (400) further comprises a first lens (420), and the first lens (420) is configured to receive the light combining device (400) The emitted blue light and the received laser light, and combine them with light processing.
The light source according to claim 16, characterized in that the light combining device (400) further comprises a light pipe (430), and the light pipe (430) is configured to receive the first lens (420). ) The emitted blue light and the received laser light, and further combine them and emit them to the outside of the light source.
The light source according to any one of claims 14-17, wherein the light path guiding device (600) comprises a first reflector (610), a second reflector (620) and a third reflector (630) ), the first reflector (610), the second reflector (620), and the third reflector (630) are configured to guide the blue light emitted by the fluorescent roller module or guided by the laser into the combined The optical device (400).
A projector, characterized in that the projector is provided with the fluorescent roller module according to any one of claims 1-12.