CN219809826U - Lighting device - Google Patents

Abstract

The utility model discloses a lighting device, comprising: a plurality of light source modules for generating first light; the light source assembly comprises at least one laser chip and a fluorescence conversion assembly, and the fluorescence conversion assembly is used for converting laser generated by the laser chip into first light; the collecting lens group comprises a plurality of collecting lenses, the collecting lenses are arranged corresponding to the light source assembly and are positioned on an emergent light path of the light source assembly and used for collecting first light; the condensing lens group is positioned on the emergent light path of the collecting lens group and used for converging the first light. By adopting the fluorescent conversion assembly to convert the laser into wide spectrum light, compared with a fluorescent color wheel and a driver for driving the fluorescent color wheel to rotate in the prior art, the lighting device has the advantages of reduced volume, simplified structure and reduced cost.

Description

Lighting device

Technical Field

The utility model relates to the technical field of illumination, in particular to an illumination device.

Background

In the current laser fluorescent lighting device, a fluorescent color wheel rotating at high speed is installed in the device, blue laser is irradiated on the fluorescent color wheel, and the laser excites fluorescent materials on the fluorescent color wheel and converts the fluorescent materials into wide-spectrum light. The fluorescent color wheel and the driver for driving the fluorescent color wheel to rotate lead to a large volume, a complex structure and high cost of the lighting device.

Disclosure of Invention

In view of the problems in the prior art, an object of the present utility model is to provide a lighting device, which has a reduced size, a simplified structure, and a reduced cost.

To achieve the above object, the present utility model provides a lighting device comprising: a plurality of light source modules for generating first light; the light source assembly comprises at least one laser chip and a fluorescence conversion assembly, and the fluorescence conversion assembly is used for converting laser generated by the laser chip into the first light; the collecting lens group comprises a plurality of collecting lenses, the collecting lenses are arranged corresponding to the light source assembly and are positioned on an emergent light path of the light source assembly and used for collecting the first light; and the condensing lens group is positioned on the emergent light path of the collecting lens group and is used for converging the first light.

The fluorescence conversion assembly is located on an emergent light path of the laser chip, and the distance between the fluorescence conversion assembly and the laser chip is smaller than 20mm.

The light source assembly further comprises an LED chip for generating LED light.

The light source assembly further comprises a plurality of LED chips used for generating LED light, and the LED chips are arranged around the laser chips.

Wherein, the light source assembly further includes: the laser chip is arranged on the radiating component, and the radiating component is used for radiating the laser chip.

Wherein the collection lens group collects the first light and the LED light; the condensing lens group condenses the first light and the LED light.

The collecting lens group is used for parallelly emitting the collected first light and the LED light.

Wherein, a plurality of light source components are arranged in a matrix.

Each light source component corresponds to at least one collecting lens, and a plurality of collecting lenses are arranged in a matrix.

Wherein the collecting lens group and the condensing lens group are sequentially arranged along the first light.

An embodiment of the present utility model provides an illumination device, including: a plurality of light source modules for generating first light; the light source assembly comprises at least one laser chip and a fluorescence conversion assembly, and the fluorescence conversion assembly is used for converting laser generated by the laser chip into first light; the collecting lens group comprises a plurality of collecting lenses, the collecting lenses are arranged corresponding to the light source assembly and are positioned on an emergent light path of the light source assembly and used for collecting first light; the condensing lens group is positioned on the emergent light path of the collecting lens group and used for converging the first light. By adopting the fluorescent conversion assembly to convert the laser into wide spectrum light, compared with a fluorescent color wheel and a driver for driving the fluorescent color wheel to rotate in the prior art, the lighting device has the advantages of reduced volume, simplified structure and reduced cost.

Drawings

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

FIG. 1 is a schematic diagram of an embodiment of a lighting device of the present utility model;

FIG. 2 is a schematic view of an embodiment of a light source assembly of the present utility model;

FIG. 3 is a schematic view of another embodiment of a light source assembly of the present utility model;

fig. 4 is a schematic structural view of an embodiment of the laser chip and LED chip of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present utility model, but do not limit the scope of the present utility model. Likewise, the following examples are only some, but not all, of the examples of the present utility model, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present utility model.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electric connection; may be directly connected or may be connected via an intermediate medium. It will be apparent to those skilled in the art that the foregoing is in the specific sense of the present utility model.

In the description of the present utility model, a description of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. Further, "a plurality" herein means two or more than two. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a lighting device according to the present utility model. The lighting device can be applied to stage lighting and automobile lamp lighting.

As shown in fig. 1, the lighting device 11 includes a plurality of light source modules 10, a collection lens group 20, and a condenser lens group 30. The light source assembly 10 is used for generating first light; the collecting lens group 20 is located on the outgoing light path of the light source assembly 10 and is used for collecting the first light; the condensing lens group 30 is located on the outgoing light path of the collecting lens group 20, and is used for condensing the first light. The collecting lens group 20 and the condensing lens group 30 are sequentially disposed along the first light.

The light source assembly 10 includes at least one laser chip and a fluorescence conversion assembly for converting laser light generated by the laser chip into first light. Wherein the first light is broad spectrum light. In the embodiment, the laser is converted into the wide-spectrum light by adopting the fluorescence conversion assembly, so that compared with a fluorescence color wheel and a driver for driving the fluorescence color wheel to rotate in the prior art, the volume of the lighting device can be reduced, the structure is simplified, and the cost is reduced.

The lighting device 11 of the present embodiment includes a light source assembly 10, a collection lens group 20, and a condenser lens group 30. The light source assembly 10 is used for generating first light; the collecting lens group 20 is located on the outgoing light path of the light source assembly 10 and is used for collecting the first light; the condensing lens group 30 is located on the outgoing light path of the collecting lens group 20, and is used for condensing the first light. The illumination device 11 of the present embodiment can emit the first light, i.e., the broad spectrum light, formed by the light source assembly 10, to achieve the illumination effect.

The lighting device 11 includes a plurality of light source assemblies 10, the plurality of light source assemblies 10 may be arranged in a matrix, and the plurality of light source assemblies 10 may also be arranged according to an actual application scenario, for example, a cross section of a housing of the lighting device 11 is circular, and an array shape of the light source assemblies 10 may be set to be adapted to the circular shape of the housing.

The collection lens group 20 includes a plurality of collection lenses 200 arranged in a matrix, and the plurality of collection lenses 200 are disposed in one-to-one correspondence with the plurality of light source modules 10. Specifically, each light source assembly 10 corresponds to at least one collecting lens 200, the collecting lens 200 is aligned with the center of the light source assembly 10, and the collecting lens 200 is disposed on the outgoing light path of the light source assembly 10. The collecting lens group 20 is used for emitting the collected first light in parallel.

In the present embodiment, each light source assembly 10 corresponds to two collecting lenses 200, and the two collecting lenses 200 are disposed in sequence along the first light. Accordingly, the collection lens group 20 includes a first lens group 201 and a second lens group 202. The first lens group 201 includes a plurality of collecting lenses 200 arranged in a matrix. The second lens group 202 includes a plurality of collecting lenses 200 arranged in a matrix.

In other embodiments, the number of lens groups in the collection lens group 20 may be other, and may be set according to a specific application scenario. The number of lens groups is set according to the size of the light spot formed by the first light on the collecting lens group 20, when the light spot formed by the first light on the collecting lens group 20 is large, the first light can be emitted in parallel by the collecting lens 200 with large curvature, and in an actual application scene, the process requirement of the collecting lens 200 with large curvature is high, and a plurality of lens groups are generally required to be arranged for multiple refraction to form collimated light.

The condensing lens assembly 30 condenses the first light. Alternatively, the condensing lens group 30 may focus the first light irradiated thereto and form a focus. The condensing lens group 30 may be formed of a plurality of lens groups, and in the present embodiment, the condensing lens group 30 is composed of one lens. In other embodiments, the number of lenses in the condensing lens group 30 may be other, which is not limited in the present utility model.

In other embodiments, a light homogenizing lens group may be further disposed between the collecting lens group 20 and the condensing lens group 30, and the light homogenizing lens group may be a double-row lens array, and the first light is refracted by the light homogenizing lens group to form a uniform parallel beam to be injected into the condensing lens group 30, so as to improve collimation accuracy.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a light source assembly according to an embodiment of the utility model. As shown in fig. 2, the light source assembly 10 includes at least one laser chip 101, a heat dissipation assembly 102, and a fluorescence conversion assembly 103. At least one laser chip 101 for generating laser light; the laser chip 101 is disposed on the heat dissipation assembly 102, and the heat dissipation assembly 102 is used for dissipating heat of the laser chip 101. The fluorescence conversion assembly 103 is located on an outgoing light path of the laser chip 101 and is used for converting laser into first light, wherein the fluorescence conversion assembly 103 can be an organic fluorescence sheet or an inorganic fluorescence sheet, the organic fluorescence sheet can be a silica gel fluorescence sheet, and the inorganic fluorescence sheet can be fluorescent ceramic or fluorescent glass.

The Laser chip 101 may be an LD (Laser Diode) chip, which is a semiconductor device driven by a current, and emits Laser light of a set wavelength band when an operating current reaches a threshold current. The laser chip 101 generates laser light. The laser may be blue light, violet light, ultraviolet light, or the like, but is not limited thereto.

Optionally, the surface of the fluorescent conversion element 103 is coated with a fluorescent material, which is excited with a laser to produce broad spectrum light. The fluorescence conversion assembly 103 is located on the light path of the laser chip 101, and the fluorescence conversion assembly 103 receives the laser light and converts the incident laser light of a short wavelength into broad spectrum light of a long wavelength, that is, the fluorescence conversion assembly 103 converts the laser light into the first light.

The light source assembly 10 of the present embodiment includes: at least one laser chip 101 for generating laser light; the laser chip 101 is arranged on the heat dissipation assembly 102, and the heat dissipation assembly 102 is used for dissipating heat of the laser chip 101; the fluorescence conversion assembly 103 is located on an outgoing light path of the laser chip 101, and is used for converting laser light into first light. By converting the laser light into broad spectrum light using the fluorescent conversion assembly 103, the lighting device has a reduced volume, simplified structure, and reduced cost compared with the fluorescent color wheel and the driver for driving the fluorescent color wheel to rotate in the prior art.

Alternatively, the light source assembly 10 includes a laser chip 101. In other embodiments, the light source assembly 10 includes a plurality of laser chips 101, and the plurality of laser chips 101 are disposed on the heat sink assembly 102.

Optionally, the distance between the laser chip 101 and the fluorescence conversion assembly 103 is less than 20mm. The distance between the laser chip 101 and the fluorescence conversion assembly 103 can be set according to the spot size of the first light formed on the collection lens group 20. The distance between the laser chip 101 and the fluorescence conversion assembly 103 is large, the light spot formed by the laser on the fluorescence conversion assembly 103 is large, the light spot formed by the first light converted by the fluorescence conversion assembly 103 on the collection lens group 20 is large, and the first light can be emitted in parallel only by the collection lens 200 with large curvature or by arranging a plurality of lens groups, so that the volume of the lighting device is also increased. The distance between the laser chip 101 and the fluorescence conversion assembly 103 is small, the light spot formed by the laser on the fluorescence conversion assembly 103 is small, the light spot formed by the first light converted by the fluorescence conversion assembly 103 on the collection lens group 20 is small, the size of the lighting device is reduced, but the light conversion efficiency of the laser is also reduced due to the light spot formed by the laser on the fluorescence conversion assembly 103 is small.

In order to improve the light conversion efficiency and reduce the volume of the lighting device, the distance between the laser chip 101 and the fluorescent conversion assembly 103 is set to a suitable distance, for example, in the present embodiment, the lighting device including the light source assembly 10 is applied to stage lighting, the distance between the laser chip 101 and the fluorescent conversion assembly 103 may be set to a distance less than 20mm, for example, the distance between the laser chip 101 and the fluorescent conversion assembly 103 may be 10mm, 13mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, or the like.

In other embodiments, when the lighting device including the light source assembly 10 is applied to other fields, the distance between the laser chip 101 and the fluorescent conversion assembly 103 may be smaller than other set values, for example, the other set value is 30mm.

Accordingly, as shown in fig. 1 and 2, by setting the distance between the laser chip 101 and the fluorescence conversion assembly 103 to be less than 20mm and controlling the spot size of the first light generated by the light source assembly 10 on the collection lens group 20, the number of lens groups of the collection lens group 20 can be reduced, further reducing the volume of the illumination device 11.

Alternatively, the laser chip 101 generates high heat when generating laser light, and needs to dissipate heat in time to maintain a stable operating temperature. The laser chip 101 is disposed on the heat dissipation assembly 102, and the heat dissipation assembly 102 may be a heat sink, or a combination of a heat sink and a coolant radiator.

Optionally, the laser generated by the laser chip 101 may be directly projected onto the fluorescent conversion component 103, or an optical system may be added between the laser chip 101 and the fluorescent conversion component 103, where the optical system is used for shaping the laser to form collimated light, so as to improve the utilization rate of the laser.

Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of a light source assembly according to the present utility model. As shown in fig. 3, the light source assembly 10 may include a laser chip 101, a heat dissipation assembly 102, a fluorescent conversion assembly 103, and an LED chip 104. The laser chip 101 and the LED chip 104 are disposed on the heat dissipation assembly 102, and the fluorescent conversion assembly 103 is located on the outgoing light path of the laser chip 101.

Among them, the laser chip 101 generates laser light with high brightness but with a small luminous flux. The LED chip 104 has a large luminous flux but a low luminance. In order to achieve both the brightness and luminous flux of the emitted light from the illumination device 11, the LED chip 104 may be used to emit light together with the laser chip 101.

The lighting device 11 of the present embodiment includes the laser chip 101 and the LED chip 104, and can increase the brightness of the lighting device 11 and increase the luminous flux of the lighting device 11.

Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of the laser chip and the LED chip of the present utility model. As shown in fig. 4, the light source assembly 10 includes a laser chip 101 and a plurality of LED chips 104, the plurality of LED chips 104 being disposed around the laser chip 101.

The present embodiment can further increase the luminous flux of the light source module 10 by adopting the design of the plurality of LED chips 104.

In other embodiments, the light source assembly 10 may further include a plurality of laser chips 101 and a plurality of LED chips 104. The number and positions of the laser chips 101 and the LED chips 104 may be set according to actual application scenarios.

The lighting device 11 comprises a light source assembly 10, a collecting lens group 20 and a condensing lens group 30, wherein the light source assembly 10 comprises at least one laser chip 101, a heat dissipation assembly 102 and a fluorescence conversion assembly 103, the laser chip 101 is used for generating laser, the laser chip 101 is arranged on the heat dissipation assembly 102, and the heat dissipation assembly 102 is used for dissipating heat of the laser chip 101; the fluorescence conversion assembly 103 is located on the outgoing light path of the laser chip 101, and is used for converting laser light into broad spectrum light, i.e. converting the laser light into first light. The light source assembly 10 may further include at least one LED chip, where the LED chip is configured to generate LED light, and the mixed light of the laser light and the LED light generated by the light source assembly 10 may be used to both brightness and luminous flux of the outgoing light of the lighting device 11, so as to improve brightness of the outgoing light and increase luminous flux of the outgoing light. The utility model adopts the fluorescent conversion component 103, and compared with a fluorescent color wheel and a driver for driving the fluorescent color wheel to rotate in the prior art, the structure of the lighting device 11 can be simplified and the cost can be reduced.

The above-described embodiments do not limit the scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments are included in the scope of the present utility model.

Claims (10)

1. A lighting device, comprising:

a plurality of light source modules for generating first light; the light source assembly comprises at least one laser chip and a fluorescence conversion assembly, and the fluorescence conversion assembly is used for converting laser generated by the laser chip into the first light;

the collecting lens group comprises a plurality of collecting lenses, the collecting lenses are arranged corresponding to the light source assembly and are positioned on an emergent light path of the light source assembly and used for collecting the first light;

and the condensing lens group is positioned on the emergent light path of the collecting lens group and is used for converging the first light.

2. A lighting device as recited in claim 1, wherein said fluorescence conversion assembly is positioned in an outgoing light path of said laser chip, and wherein a distance between said fluorescence conversion assembly and said laser chip is less than 20mm.

3. A lighting device as recited in claim 1, wherein said light source assembly further comprises an LED chip for generating LED light.

4. A lighting device as recited in claim 1, wherein said light source assembly further comprises a plurality of LED chips for producing LED light, a plurality of said LED chips being disposed about said laser chips.

5. A lighting device as recited in claim 1, wherein said light source assembly further comprises: the laser chip is arranged on the radiating component, and the radiating component is used for radiating the laser chip.

6. A lighting device as recited in claim 3 or claim 4, wherein said collection lens group collects said first light and said LED light; the condensing lens group condenses the first light and the LED light.

7. A lighting device as recited in claim 6, wherein said collection lens group is configured to emit said collected first light and said LED light in parallel.

8. A lighting device as recited in claim 1, wherein a plurality of said light source modules are arranged in a matrix.

9. A lighting device as recited in claim 8, wherein each of said light source modules corresponds to at least one of said collection lenses, and a plurality of said collection lenses are arranged in a matrix.

10. A lighting device as recited in claim 1, wherein said collection lens group and said collection lens group are disposed in sequence along said first light.