CN220152558U

CN220152558U - Light source device

Info

Publication number: CN220152558U
Application number: CN202321744693.6U
Authority: CN
Inventors: 张权; 陈辉
Original assignee: YLX Inc
Current assignee: YLX Inc
Priority date: 2023-07-04
Filing date: 2023-07-04
Publication date: 2023-12-08
Anticipated expiration: 2033-07-04

Abstract

The embodiment of the utility model provides a light source device, which belongs to the technical field of light sources, and comprises an excitation light source, an optical device and a color wheel assembly, wherein the excitation light source is used for emitting excitation light, the optical device comprises a mounting part and a driving device, the mounting part is provided with one or more optical elements, and the driving device is in transmission connection with the mounting part and is used for driving the mounting part to rotate so as to selectively switch the optical elements positioned in a light path of the excitation light in the rotating process. The color wheel component is used for receiving the excitation light and converting the excitation light into laser light. The light source device can conveniently switch different optical elements into the light path according to different use environments and use requirements, so that the optical parameters of the excitation light are changed, the finally emitted illumination light is suitable for different use environments and requirements, the whole optical device and the light source device are convenient to assemble, the assembly efficiency under different use environments can be remarkably improved, and the light source device is suitable for various different application environments.

Description

Light source device

Technical Field

The utility model relates to the technical field of light sources, in particular to a light source device.

Background

At present, the structure of a light source device applied to stage illumination, searchlight, search and rescue is fixed, and optical devices such as a diffusion sheet, a light filter and the like are arranged in the light source device, so that the emergent light has a single emergent light effect, and different emergent light effects cannot be switched according to requirements.

Disclosure of Invention

The present utility model aims to provide a light source device to at least partially ameliorate the above problems.

In a first aspect, an embodiment of the present utility model provides a light source device, including an excitation light source, an optical device, and a color wheel assembly, where the excitation light source is used for emitting excitation light, the optical device includes a mounting portion and a driving device, the mounting portion is provided with one or more optical elements, and the driving device is in transmission connection with the mounting portion and is used for driving the mounting portion to rotate, so that in the rotation process, optical elements located in an optical path of the excitation light are selectively switched. The color wheel component is used for receiving the excitation light and converting the excitation light into laser light.

In one embodiment, the mounting portion is provided with one or more mounting locations, one for each optical element.

In one embodiment, the mounting locations include mounting slots disposed in the mounting portion, and each mounting slot has a light-passing hole therein, and the optical element is disposed in the mounting slot and covers the light-passing hole.

In one embodiment, the mounting groove is fan-shaped, and the plurality of mounting grooves are symmetrically distributed along the center of the mounting portion.

In one embodiment, the optical element is a filter, a diffuser, or a fly eye lens.

In one embodiment, the optical element is a fly-eye lens, the fly-eye lens includes a first fly-eye, a second fly-eye and a fly-eye support, the fly-eye support is provided with a through hole, the first fly-eye and the second fly-eye are both disposed on the fly-eye support and are respectively disposed on two opposite sides of the fly-eye support, the first fly-eye and the second fly-eye both cover the through hole, and the fly-eye support is used for being connected with the driving device.

In one embodiment, the optical device includes a first optical device and a second optical device, the optical element of the first optical device is a diffusion sheet or an optical filter, the optical element of the second optical device is a fly eye lens, and the second optical device is disposed between the first optical device and the excitation light source.

In one embodiment, the color wheel assembly includes a color wheel disc including a substrate and a reflective film disposed on a side surface of the substrate, a wavelength conversion material disposed on a surface of the reflective film away from the substrate, and a driving portion for driving the color wheel disc to rotate.

In one embodiment, the color wheel assembly includes a color wheel disc including a substrate having a surface provided with a wavelength conversion material, and a driving section for driving the color wheel disc to rotate.

The light source device provided by the utility model can conveniently switch different optical elements into the light path according to different use environments and use requirements, so that the optical parameters of the excitation light are changed, the finally emitted illumination light has different effects, the light source device is suitable for different use environments and requirements, the whole light source device is convenient to assemble, the assembly efficiency under different use environments can be remarkably improved, and the light source device is suitable for various application environments.

These and other aspects of the utility model will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a light source device according to a first embodiment of the present utility model.

Fig. 2 is an axial side view of a light source device according to a first embodiment of the present utility model.

Fig. 3 is a schematic diagram showing a split structure of an optical device in a light source apparatus according to a first embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a light source device according to a second embodiment of the present utility model.

Fig. 5 is an axial side view of a light source device according to a second embodiment of the present utility model.

Fig. 6 is a schematic structural diagram of a light source device according to a third embodiment of the present utility model.

Fig. 7 is an axial side view of a light source device according to a third embodiment of the present utility model.

Fig. 8 is a schematic diagram showing a split structure of an optical device in a light source apparatus according to a third embodiment of the present utility model.

Fig. 9 is a schematic cross-sectional view of an optical device in a light source device according to a third embodiment of the present utility model.

Fig. 10 is a schematic structural view of a light source device according to a fourth embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

At present, the structure of a light source device applied to stage lighting, searchlighting, search and rescue and the like is fixed, wherein the structure of an optical device such as a diffusion sheet, a light filter and the like is fixed, the optical device is troublesome to adjust under different application environments, the assembly and debugging efficiency of a product is low, and the application of the product is limited.

First embodiment

Referring to fig. 1 and 2 together, the present embodiment provides a light source device 10, which includes: the excitation light source 100, the optical device 200 and the color wheel assembly 300, wherein the excitation light source 100 emits excitation light, and the excitation light is incident to the color wheel assembly 300 after passing through the optical device 200, and is further converted into laser emission, wherein the wavelength of the excited light is different from the wavelength of the excitation light.

Specifically, the excitation light source 100 may be a laser light source, more specifically, the excitation light source 100 may be a blue laser light source, and of course, the excitation light source 100 may also be a light source of another color, which is not limited in this embodiment.

The optical device 200 includes a mounting portion 220, a driving device 210 and optical elements 230, where the number of the optical elements 230 may be one or more, the optical elements 230 are disposed on the mounting portion 220, the driving device 210 is in transmission connection with the mounting portion 220 and is used for driving the mounting portion 220 to rotate, where the driving device 210 may be a motor, and an output shaft of the driving device 210 is connected to the mounting portion 220 and drives the mounting portion 220 to rotate when the driving device 210 works.

In this embodiment, the mounting portion 220 is provided with a plurality of mounting positions, the number of the optical elements 230 is a plurality, and each optical element 230 is disposed in one mounting position in a one-to-one correspondence manner, it can be appreciated that in some embodiments, the number of mounting positions may be greater than the number of the optical elements 230, and at this time, some mounting positions may not be provided with the optical elements 230, so that during the rotation of the mounting portion 220, the optical elements 230 in the optical path of the excitation light may be selectively switched, when different optical elements 230 are in the optical path of the excitation light, the excitation light passes through different optical elements 230, so that the optical parameters of the excitation light are changed, where the optical parameters include, but are not limited to, divergence angle, uniformity, optical expansion, wavelength, intensity, and the like.

More specifically, referring to fig. 3, in the present embodiment, the mounting position includes a mounting groove 221 disposed in the mounting portion 220, and the size of the mounting groove 221 and the size of the optical element 230 are matched with each other, so that the optical element 230 can be embedded in the mounting groove 221 and fixed in the mounting groove 221, wherein the optical element 230 can be fixed in the mounting groove 221 by an adhesive manner, for example, when assembling, after dispensing in the mounting groove 221, the optical element 230 is assembled into the mounting groove 221, so that the optical element 230 and the mounting portion 220 are mutually fixed. In another manner, the optical element 230 may be fixed in the mounting groove 221 by an interference fit, which is not limited in this embodiment.

The depth of the mounting groove 221 may be approximately equal to the thickness of the optical element 230, so that the mounting portion 220 may be maintained in a flat state after the optical element 230 is assembled into the mounting groove 221, reducing resistance during rotation. In this embodiment, the mounting portion 220 is substantially disc-shaped, and the plurality of mounting grooves 221 are arranged in a central symmetry manner along the center of the mounting portion 220 (i.e. the center of the mounting portion 220), so that the stability of the optical device 200 can be improved. Each mounting slot 221 is fan-shaped and, correspondingly, each optical device 200 is arranged in a generally fan-shaped configuration. The output shaft of the drive means 210 is drivingly connected to the centre of the mounting portion 220.

Each mounting groove 221 is provided with a light-passing hole 222, and the optical element 230 is disposed in the mounting groove 221 and covers the light-passing hole 222, when one of the optical elements 230 is located on the light path of the excitation light, the excitation light can penetrate through the optical element 230, so that the optical parameters of the excitation light are changed.

It should be noted that, in an embodiment, the plurality of mounting grooves 221 are linearly arranged along one side of the mounting portion 220, each mounting groove is rectangular, a light-passing hole is formed in each mounting groove 221, the optical element 230 is disposed in the mounting groove 221 and covers the light-passing hole 222, and when one of the optical elements 230 is located on the light path of the excitation light, the excitation light can pass through the optical element 230, so that the optical parameters of the excitation light are changed. At this time, the optical element is switched in a linear movement manner, and at this time, a rack is arranged at one side of the mounting portion 220, the driving device is a gear matched with the rack of the mounting portion, and the driving device drives the gear to rotate, so that the gear rotates to drive the mounting portion to linearly move.

In this embodiment, the optical element 230 may be a diffusion sheet, and different optical elements 230 may be diffusion sheets with different diffusion properties, for example, diffusion sheets with different degrees of atomization, and when the diffusion sheets with different diffusion properties (i.e., the optical element 230) are located on the optical path of the excitation light, the optical parameters of the excitation light passing through the diffusion sheets are different. Specifically, when the excitation light passes through the diffusion sheet with higher atomization degree, the light is blocked from penetrating through the diffusion sheet, and can be emitted through repeated reflection or refraction, so that the light has higher diffusivity, the light spot of the emitted light is larger, the uniformity of the light spot is better, further, when the light spot with better uniformity is excited by the color wheel, the light conversion efficiency of the color wheel is better due to the fact that the light spot is larger, the irradiation of the large light spot is more uniform, and meanwhile, the light conversion efficiency of the center and the surrounding light of the light spot is consistent, so that the uniformity of the combined light color of the fluorescence emitted after conversion and the unconverted excitation light is higher, namely the uniformity of the color temperature is better, and the color temperature deviation caused by the light quenching effect due to the concentrated light spot does not exist; when the excitation light passes through the diffusion sheet with lower atomization degree, part of the light can directly penetrate through the diffusion sheet to be emitted without repeated reflection or refraction, so that the light has lower diffusivity, light spots of the emitted light are smaller, the uniformity of the light spots is relatively poorer, the center of the light spots is brighter, the edge brightness is relatively weaker, and the light can be applied to occasions with high requirements on the center brightness of part of the light beams.

In another embodiment, the optical element 230 may be a filter, and the different optical elements 230 may be filters for filtering light beams of different wavelength bands, or may be filters for filtering light beams of different polarization states, such as an S-polarized light filter, a P-polarized light filter, and the like, where when the filters with different filtering properties (i.e., the optical element 230) are located on the light path of the excitation light, the optical parameters of the excitation light transmitted through the filters are different.

In another embodiment, the optical element 230 may be a fly-eye lens, the different optical elements 230 may be fly-eye lenses with different light homogenizing parameters, and the fly-eye lens may be a single fly-eye lens or a double fly-eye lens, when the fly-eye lenses with different light homogenizing properties (i.e. the optical element 230) are located on the light path of the excitation light, the optical parameters of the excitation light transmitted through the fly-eye lenses are different.

When the number of the optical elements 230 is smaller than the number of the mounting grooves 221 and the light passing holes 222, a part of the mounting grooves 221 may be empty, and when the controlled mounting grooves 221 rotate on the optical path of the excitation light, the corresponding light passing holes 222 may directly pass through the excitation light.

The number of the mounting grooves 221 on the mounting portion 220 and the number of the optical elements 230 may be 2, 3 or more, which is not limited in this embodiment. In particular, in the present embodiment, the number of the mounting grooves 221 is 5, and the number of the optical elements 230 is also 5. Note that, the spot from which the excitation light is emitted may be incident on only one optical element 230, or may be incident on a plurality of optical elements 230 at the same time.

Referring to fig. 1 again, the color wheel assembly 300 includes a color wheel 320 and a driving portion 310, the driving portion 310 is configured to drive the color wheel 320 to rotate, the color wheel 320 includes a substrate and a wavelength conversion material disposed on the substrate, the wavelength conversion material may be a phosphor of various colors, for example, one of a lithium-calcium phosphor, a fluoride phosphor, an organic phosphor, an oxide phosphor, and the particle size of the phosphor particles may be 10 μm-15 μm. The phosphor may be red phosphor, yellow phosphor, etc. according to different laser-light-receiving color requirements, which is not limited in this embodiment. In this embodiment, the substrate is a reflective substrate, that is, the color wheel assembly 300 is a reflective color wheel, specifically, the color wheel disc 320 further includes a reflective film, the substrate has a first surface and a second surface opposite to each other, the reflective film is disposed on the first surface, a surface of the reflective film far away from the substrate is provided with phosphor, wherein the reflective film may also be disposed on the second surface, and the wavelength conversion material is directly disposed on the first surface. The excitation light may be incident on the phosphor on the color wheel after passing through the optical element 230, and converted into the excited light to exit.

In this embodiment, the light source device 10 may further include a third lens group 410, a fourth lens group 420, a first lens group 430, and a dichroic sheet 500, wherein the third lens group 410 is disposed between the excitation light source 100 and the optical device 200 for shaping the excitation light. The dichroic plate 500 is disposed between the optical device 200 and the color wheel assembly 300, the first lens group 430 is disposed between the color wheel assembly 300 and the dichroic plate 500, and the dichroic plate 500 is transparent to the excitation light and reflective to the laser light. When the excitation light passes through the dichroic plate 500, then enters the fluorescent powder on the color wheel 320 through the first lens group 430, is converted into laser light, then passes through the first lens group 430 again, enters the dichroic plate 500, is reflected by the dichroic plate 500, and exits through the fourth lens group 420.

The light source device 10 may further include a second lens group 440 and a reflective diffusion sheet 450, where the dichroic sheet 500 may reflect a portion of the excitation light, and by disposing the reflective diffusion sheet 450 on the light path of the excitation light reflected by the dichroic sheet 500, the reflective diffusion sheet 450 may re-reflect the portion of the light reflected by the dichroic sheet 500 back to the dichroic sheet 500, thereby improving the light utilization efficiency and reducing the light loss, and the second lens group 440 is disposed between the reflective diffusion sheet 450 and the dichroic sheet 500 and is used for collecting the light reflected by the reflective diffusion sheet 450. Wherein the optical axis of the light reflected by the reflection/scattering sheet 450 may be perpendicular to the optical axis of the excitation light.

The light source device 10 provided in this embodiment can switch different optical elements 230 to the light path according to different usage environments and usage requirements, so as to change the optical parameters of the excitation light, so that the finally emitted illumination light is suitable for different usage environments and requirements, the whole optical device 200 and the light source device 10 are convenient to assemble, the assembly efficiency under different usage environments can be remarkably improved, and the light source device is suitable for various application environments.

Second embodiment

Referring to fig. 4 and 5 together, the present embodiment provides a light source device 10, which is different from the first embodiment in that, in the present embodiment, the color wheel module is a transmissive color wheel, and only the portions different from the first embodiment are described in detail below, and the same portions refer to the foregoing embodiments.

In this embodiment, the color wheel assembly 300 includes a color wheel 320 and a driving portion 310, the driving portion 310 is used for driving the color wheel 320 to rotate, the color wheel 320 includes a substrate and a wavelength conversion material disposed on the substrate, the substrate is a transmissive substrate, that is, the color wheel assembly 300 at this time is a transmissive color wheel, specifically, the substrate has a first surface and a second surface opposite to each other, the first surface is provided with fluorescent powder (wavelength conversion material), when excitation light is incident on the fluorescent powder on the first surface, the fluorescent powder absorbs the excitation light and converts the excitation light into excited light (fluorescence), the excited light formed by the conversion and unconverted excitation light penetrate through the substrate, and the excited light is emitted along a propagation direction with the excitation light to form illumination light.

Third embodiment

Referring to fig. 6 and 7 together, the present embodiment provides a light source device 10, which is different from the first embodiment in the number of optical devices 200. Only the portions different from the first embodiment will be described in detail, and the same portions will be referred to in the foregoing embodiments.

Specifically, in this embodiment, the optical device 200 includes a first optical device 201 and a second optical device 202, where the optical element 230 of the first optical device 201 is a diffusion sheet, and in other embodiments, the optical element 230 of the first optical device 201 may be a filter according to practical requirements. The optical element 230 of the second optical device 202 is a fly eye lens, and the second optical device 202 is disposed between the first optical device 201 and the excitation light source 100 and is used for homogenizing the excitation light.

The fly-eye lens may be a single fly-eye lens or a double fly-eye lens, and in this embodiment, the optical element 230 of the second optical device 202 is a double fly-eye lens, and in this embodiment, referring to fig. 8 and 9, the fly-eye lens includes a first fly-eye 231, a second fly-eye 232, and a fly-eye support 233, the fly-eye support 233 is provided with a through hole 234, the first fly-eye 231 and the second fly-eye 232 are disposed on the fly-eye support 233 and are respectively located on opposite sides of the fly-eye support 233, the first fly-eye 231 and the second fly-eye 232 cover the through hole 234, and the fly-eye support 233 is connected with the driving device 210. When the driving device 210 rotates, the fly-eye lens can rotate to the light-emitting path of the excitation light, and the excitation light is transmitted through the first fly-eye 231 and the second fly-eye 232 to homogenize the excitation light, so that the light spots of the excitation light transmitted through the fly-eye lens are in an overall uniform form. The fly-eye lens can also rotate to the light-emitting light path of the excitation light, at the moment, the excitation light does not pass through the homogenization of the fly-eye lens, the light spot of the excitation light is in a form of brighter center and darker edge, and according to the requirement on the excitation light form, the fly-eye lens can be controlled to rotate to the light-emitting light path of the excitation light, and also can be controlled to rotate to the light-emitting light path of the excitation light.

The number of fly-eye lenses in the second optical device 202 may be one or more, which is not limited in this embodiment. In other embodiments, the fly-eye lens may be a single fly-eye lens, and the single fly-eye lens may achieve the effect of bright edges at the center of the light spot, and may be controlled to rotate onto the light-emitting path of the excitation light or rotate onto the light-emitting path away from the excitation light according to the requirement on the form of the excitation light.

After the excitation light homogenized by the second optical device 202 enters the subsequent optical path, the uniformity of the excitation light and the laser light formed by conversion can be improved, and the conversion efficiency of the excitation light entering the color wheel 320 when the excitation light is converted by the wavelength conversion material is also improved.

Fourth embodiment

Referring to fig. 10, the present embodiment provides a light source device 10, which is different from the third embodiment in that, in the present embodiment, the color wheel module is a transmissive color wheel, and only the portions different from the third embodiment are described in detail below, and the same portions refer to the foregoing embodiments.

In this embodiment, the color wheel assembly 300 includes a color wheel 320 and a driving portion 310, the driving portion 310 is used for driving the color wheel 320 to rotate, the color wheel 320 includes a substrate and a wavelength conversion material disposed on the substrate, the substrate is a transmissive substrate, that is, the color wheel assembly 300 is a transmissive color wheel, specifically, the substrate has a first surface and a second surface opposite to each other, the first surface is provided with fluorescent powder, and the laser light can directly penetrate the second surface.

The excitation light emitted from the excitation light source 100 passes through the second optical device 202 and the first optical device 201, enters the color wheel assembly 300, is converted into laser, and then passes through the color wheel assembly 300 to be emitted to form illumination light.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A light source device, comprising:

the excitation light source is used for emitting excitation light;

the optical device comprises a mounting part, a driving device and one or more optical elements, wherein one or more optical elements are arranged on the mounting part, the driving device is in transmission connection with the mounting part and is used for driving the mounting part to rotate so as to selectively switch the optical elements positioned in the optical path of the excitation light in the rotating process; and

and the color wheel component is used for receiving the excitation light and converting the excitation light into laser light.

2. A light source device as recited in claim 1, wherein the mounting portion is provided with one or more mounting locations, each of the optical elements being disposed within one of the mounting locations.

3. The light source device according to claim 2, wherein the mounting positions include mounting grooves provided in the mounting portions, a light passing hole is provided in each of the mounting grooves, and the optical element is provided in the mounting groove and covers the light passing hole.

4. A light source device according to claim 3, wherein the mounting groove has a fan shape, and a plurality of the mounting grooves are symmetrically distributed along a center of the mounting portion.

5. A light source device according to any one of claims 1 to 4, wherein the optical element is a filter, a diffuser or a fly eye lens.

6. The light source device according to claim 5, wherein the optical element is a fly-eye lens, the fly-eye lens includes a first fly-eye, a second fly-eye, and a fly-eye holder, the fly-eye holder is provided with a through hole, the first fly-eye and the second fly-eye are both disposed on the fly-eye holder and are respectively disposed on opposite sides of the fly-eye holder, the first fly-eye and the second fly-eye both cover the through hole, and the fly-eye holder is adapted to be connected to the driving device.

7. A light source device according to claim 6, wherein the optical device includes a first optical device and a second optical device, the optical element of the first optical device is a diffusion sheet or a filter, the optical element of the second optical device is a fly eye lens, and the second optical device is disposed between the first optical device and the excitation light source.

8. The light source device according to claim 1, wherein the color wheel assembly comprises a color wheel disc and a driving part, the color wheel disc comprises a substrate and a reflective film, the reflective film is arranged on one side surface of the substrate, a wavelength conversion material is arranged on the surface of the reflective film away from the substrate, and the driving part is used for driving the color wheel disc to rotate.

9. A light source device as recited in claim 1, wherein the color wheel assembly comprises a color wheel disc and a driving portion, the color wheel disc comprises a substrate, a surface of the substrate is provided with a wavelength conversion material, and the driving portion is used for driving the color wheel disc to rotate.