CN210776161U - Light source device - Google Patents

Abstract

The utility model discloses a light source device, including excitation light source and wavelength conversion device, wavelength conversion device on only be provided with along its a plurality of wavelength conversion material layers that rotate circumference and distribute to have at least one wavelength conversion material layer to arouse under the excitation light source shines the radiant fluorescence that produces and contain with the excitation light source with the same colour but the different colour light component of wavelength, the radiant fluorescence that all wavelength conversion material layers arouse the production is used for the confession to become white light output. Light source device adopt the wavelength conversion device who only is provided with wavelength conversion material layer, need not to set up the transmission area on wavelength conversion device, need not to set up a plurality of lens structures and will carry out the exciting light that passes from wavelength conversion device transmission area transmission and carry out the light path after the light path is turned over and combine light with radiation fluorescence, effectively reduce lens part quantity, retrench the light path structure, reduce light source device and occupy volume, reduce cost.

Description

Light source device

Technical Field

The utility model relates to the field of lighting technology, especially, relate to a light source device.

Background

The light source structure commonly used in the existing projector is that excitation light is adopted to irradiate a wavelength conversion material on a wavelength conversion device to generate radiation fluorescence, and then the radiation fluorescence and the excitation light are converged and then are combined to output light to obtain white light. The prior projection light source is provided with a transmission area for transmitting exciting light on a wavelength conversion device, the exciting light transmitted from the transmission area can be combined with radiant fluorescence for light output after being reflected and converted for many times, the light path is complex, the number of lens components is large, the occupied volume is large, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve and the technical task who provides improve prior art, provide a light source device, solve the light source structure in the prior art complicacy, the part is many, occupy bulky, problem with high costs.

For solving the above technical problem, the technical scheme of the utility model is that:

a light source device comprises an excitation light source and a wavelength conversion device, wherein the wavelength conversion device is only provided with a plurality of wavelength conversion material layers distributed along the rotation circumferential direction of the wavelength conversion device, at least one wavelength conversion material layer is excited under the irradiation of the excitation light source to generate radiant fluorescence containing color light components which are the same as the excitation light source in color but different in wavelength, and the radiant fluorescence generated by the excitation of all the wavelength conversion material layers is used for combining light to form white light to be output. Light source device adopt the wavelength conversion device who only is provided with wavelength conversion material layer, need not to set up the transmission area on wavelength conversion device, thereby need not to set up a plurality of lens structures and come to carry out the exciting light that the transmission area transmission of following wavelength conversion device was passed and close the light with radiation fluorescence after the light path is turned over, the color light that produces with excitation light source homochromy but the wavelength is different by the excitation material layer excitation comes to close the light with other radiation fluorescence, replace the traditional exciting light that sends the excitation light source and the mode that the light output is closed to radiation fluorescence, effectively reduce lens part quantity, retrench the light path structure, it occupies the volume to reduce light source device, and the cost is reduced.

Further, a light splitting sheet is arranged between the excitation light source and the wavelength conversion device, the light splitting sheet reflects light of the excitation light source and transmits radiant fluorescence generated by the wavelength conversion material layer or the light splitting sheet transmits light of the excitation light source and reflects radiant fluorescence generated by the wavelength conversion material layer, the excitation light source is obliquely irradiated to the light splitting sheet and then is guided by the light splitting sheet to irradiate the wavelength conversion device, and the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device is irradiated to the light splitting sheet and then is combined with light to be output. Compact structure, the light path is simple, only adopt a beam splitter can realize leading the exciting light to wavelength conversion equipment and make all radiant fluorescence that produce all syntropy transmission after the light output that closes, it is specific, the beam splitter reflects the exciting light and transmits the colour light that is the same colour but the wavelength is different with the exciting light in the radiant fluorescence, perhaps the beam splitter transmits the exciting light and reflects the radiant fluorescence in the same colour but the different colour light of wavelength with the exciting light, thereby make the radiant fluorescence syntropy transmission of the colour light energy that is the same colour but the wavelength is different with the exciting light in the radiant fluorescence, need not to set up the lens that is used for the light path to turn over, reduce whole light source device and occupy the volume, reduce cost.

Further, the excitation light source is a blue light source, the wavelength conversion material layer on the wavelength conversion device comprises a cyan wavelength conversion material layer, the cyan radiation fluorescence generated by excitation of the cyan wavelength conversion material layer contains a blue part, and the blue part has a different wavelength from the blue light source.

Furthermore, the dominant wavelength of the excitation light source is 440-465 nm, the radiant fluorescence generated by excitation of the wavelength conversion material layer on the wavelength conversion device contains color light components with the wavelength of 465-500 nm, the stimulation of light with the wavelength of 440-465 nm to human eyes is relatively large, but the efficiency of exciting the fluorescence is higher, the stimulation of light with the wavelength of 465-500 nm to the human eyes is relatively weak, and therefore the luminous flux of output light can be improved while the stimulation of a blue light part to the human eyes is reduced.

A light source device comprises an excitation light source, a light combining light source and a wavelength conversion device, wherein the wavelength conversion device is only provided with a plurality of wavelength conversion material layers distributed along the rotation circumferential direction of the wavelength conversion device, and the wavelength conversion material layers are combined with light emitted by the light combining light source into white light to be output. The utility model discloses a wavelength conversion device who only is provided with wavelength conversion material layer need not to set up the transmission area on wavelength conversion device to need not to set up a plurality of lens structures and will come from the exciting light that wavelength conversion device's transmission area transmission passed and carry out the light path and roll over back and the combined light of radiation fluorescence, the utility model discloses an extra light source that closes combines the light output directly with the radiation fluorescence that wavelength conversion material layer stimulation produced, can effectively retrench the light path structure, reduces lens quantity, reduces and occupies volume, reduce cost.

Furthermore, at least one wavelength conversion material layer on the wavelength conversion device is excited by an excitation light source to generate radiant fluorescence containing color light components which are the same as the excitation light source in color but different in wavelength, and the wavelength conversion material layer is excited to generate color light which is the same as the excitation light source in color but different in wavelength to perform light combination output, so that the traditional mode of performing light combination output on the excitation light emitted by the excitation light source and the radiant fluorescence is replaced, the stimulation to human eyes is reduced, and the luminous flux of output light is improved.

Furthermore, a light splitting sheet is arranged between the excitation light source and the wavelength conversion device, the light splitting sheet reflects light of the excitation light source and transmits radiant fluorescence generated by the wavelength conversion material layer or the light splitting sheet transmits light of the excitation light source and reflects radiant fluorescence generated by the wavelength conversion material layer, the excitation light source is obliquely emitted to the light splitting sheet and then is guided by the light splitting sheet to irradiate the wavelength conversion device, and the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device is emitted to the light splitting sheet and then is combined with light emitted by the light combining light source to be output.

Furthermore, the light splitting sheet reflects the light of the light combining light source, the light combining light source is obliquely emitted to the light splitting sheet and then guided to the light combining and outputting in the same direction as the radiation fluorescence by the light splitting sheet, the light path structure is simplified, the number of lenses is reduced, the occupied volume is reduced, and the cost is reduced.

Furthermore, the light combination light source and the excitation light source work in a time-sharing mode, and the work power consumption is reduced.

Further, the light combination source comprises a light source with the same color and/or different colors as the excitation light source.

Compared with the prior art, the utility model discloses the advantage lies in:

light source device adopt the wavelength conversion device who only is provided with wavelength conversion material layer, need not to set up the transmission area on wavelength conversion device, need not to set up a plurality of lens structures and will carry out the exciting light that passes from wavelength conversion device transmission area transmission and carry out the light path after the light path is turned over and combine light with radiation fluorescence, effectively reduce lens part quantity, retrench the light path structure, reduce light source device and occupy volume, reduce cost.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a light source device;

fig. 2 is a schematic structural diagram of a wavelength conversion device according to a first embodiment;

FIG. 3 is a schematic structural diagram of a second embodiment of a light source device;

FIG. 4 is a schematic diagram of a third exemplary embodiment of a light source device;

FIG. 5 is a schematic structural diagram of a light source device according to a fourth embodiment;

FIG. 6 is a schematic structural diagram of a fifth embodiment of a light source device;

fig. 7 is a schematic structural diagram of a light source device according to a sixth embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses a light source device, the light path structure is retrencied, reduces part quantity, reduces occupation volume, reduces manufacturing cost.

Example one

As shown in fig. 1 and fig. 2, a light source device mainly includes an excitation light source 1, a wavelength conversion device 2, a beam splitter 3, a color filter wheel 4 and a light rod 5, where the wavelength conversion device 2 is only provided with a plurality of wavelength conversion material layers distributed along its rotation circumferential direction, and the wavelength conversion device 2 is not provided with a transmission region, specifically, the excitation light source 1 adopts a blue light source or an ultraviolet light source capable of exciting fluorescence, the excitation light source 1 can be an LED light source or a laser light source, in this embodiment, the excitation light source 1 adopts a blue laser light source, and the dominant wavelength of blue excitation light emitted by the blue laser light source is 440-465 nm; the wavelength conversion material layer comprises a red wavelength conversion material layer, a green wavelength conversion material layer and a cyan wavelength conversion material layer, the red wavelength conversion material layer, the green wavelength conversion material layer and the cyan wavelength conversion material layer respectively generate red radiation fluorescence, green radiation fluorescence and cyan radiation fluorescence under the irradiation of an excitation light source 1, the red wavelength conversion material layer, the green wavelength conversion material layer and the cyan wavelength conversion material layer are distributed along the rotation circumferential direction of the wavelength conversion device 2 and cover the whole circumferential direction, the cyan radiation fluorescence generated by the excitation of the cyan wavelength conversion material layer contains blue light components with the wavelength of 465-500 nm, and the radiation fluorescence generated by the excitation of all the wavelength conversion material layers is used for combining light to form white light to be output;

the light splitting sheet 3 is arranged between the excitation light source 1 and the wavelength conversion device 2, the light splitting sheet 3 reflects light of the excitation light source 1 and transmits radiant fluorescence generated by the wavelength conversion material layer, specifically, the light splitting sheet 3 reflects blue light with a wavelength of 440-465 nm and transmits blue light with a wavelength of 465-500 nm, the excitation light source 1 obliquely irradiates the light splitting sheet 3 and then reflects the radiant fluorescence to the wavelength conversion device 2 through the light splitting sheet 3, in this embodiment, the wavelength conversion device 2 is a reflective fluorescent wheel, the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device 2 is reversely reflected to the light splitting sheet 3 and transmitted from the light splitting sheet 3, then the radiant fluorescence sequentially passes through the color filter wheel 4 and the light rod 5 and is combined to be output, the color filter wheel 4 synchronously rotates with the wavelength conversion device 2, the color filter wheel 4 filters light of various colors, and outputs light of various colors in a time-sharing manner, if the requirement on the color is low or the radiant fluorescence generated by the excited wavelength conversion material layer is bright, the color filter wheel 4 is not arranged, and the filtered light with each color finally enters the light rod 5 for uniform light output; and a focusing collimation module is respectively arranged between the excitation light source 1 and the light splitting sheet 3 and between the light splitting sheet 3 and the wavelength conversion device 2, so that light is focused and shaped, and the excitation effect and the output light quality are improved.

Example two

As shown in fig. 3, the difference from the first embodiment is that the light-splitting sheet 3 transmits light of the excitation light source 1 and reflects radiant fluorescence generated by the wavelength conversion material layer, specifically, the light-splitting sheet 3 transmits blue light with a wavelength of 440 to 465nm and reflects blue light with a wavelength of 465 to 500nm, the excitation light source 1 obliquely irradiates the light-splitting sheet 3 and then transmits the light-splitting sheet 2, the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device 2 reversely irradiates the light-splitting sheet 3 and is reflected by the light-splitting sheet 3, and then the radiant fluorescence sequentially passes through the color wheel 4 and the optical rod 5 and is combined to output light.

EXAMPLE III

As shown in fig. 4, a light source device mainly includes an excitation light source 1, a light combining light source 6, a wavelength conversion device 2, a light splitting sheet 3, a color filter wheel 4 and a light rod 5, wherein the wavelength conversion device 2 is only provided with a plurality of wavelength conversion material layers distributed along the rotation circumferential direction thereof, and the wavelength conversion device 2 is not provided with a transmission region, specifically, the excitation light source 1 adopts a blue laser light source, the light combining light source 6 is a blue light source, preferably a laser light source, and the wavelength of the light combining light source 6 may be the same as or different from that of the excitation light source 1, specifically, the excitation light source 1 may be a blue light source with a wavelength of 440 to 465nm, and the light combining light source 6 may be a blue light source with a wavelength of 465 to 500 nm; the wavelength conversion material layer on the wavelength conversion device 2 comprises a red wavelength conversion material layer and a green wavelength conversion material layer, the red wavelength conversion material layer and the green wavelength conversion material layer respectively generate red radiation fluorescence and green radiation fluorescence under the irradiation of the excitation light source 1, the red wavelength conversion material layer and the green wavelength conversion material layer are distributed along the rotation circumference of the wavelength conversion device 2, the light combining light source 6 and the excitation light source 1 work in a time-sharing manner, and the radiation fluorescence generated by the excitation of the wavelength conversion material layer and the light emitted by the light combining light source 6 are combined into white light to be output;

specifically, the splitting sheet 3 is disposed between the excitation light source 1 and the wavelength conversion device 2, the splitting sheet 3 reflects light of the excitation light source 1 and the light combining light source 6 and transmits radiant fluorescence generated by the wavelength conversion material layer, the excitation light source 1 obliquely irradiates the splitting sheet 3 and then reflects the radiant fluorescence to the wavelength conversion device 2 through the splitting sheet 3, in this embodiment, the wavelength conversion device 2 is a reflective fluorescence wheel, the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device 2 is reversely irradiated to the splitting sheet 3 and transmitted from the splitting sheet 3, the light combining light source 6 and the excitation light source 1 are respectively located at two sides of the splitting sheet 3, the light combining light source 6 obliquely irradiates the splitting sheet 3 and then reflects the radiant fluorescence to the same direction as the radiant fluorescence through the splitting sheet 3, then the radiant fluorescence and the light emitted by the light combining light source 6 sequentially pass through the color wheel 4 and the light rod 5 and then are combined to be output, the color wheel 4 synchronously rotates with the wavelength conversion device, the color filter wheel 4 filters the light with various colors, and outputs the light with various colors in a time-sharing manner, if the requirement on the color is low, or the radiation fluorescence generated by the excited wavelength conversion material layer is bright, the color filter wheel 4 is not arranged, and the filtered light with various colors finally enters the light rod 5 for uniform light output; focusing and collimating modules are respectively arranged between the excitation light source 1 and the light splitting sheet 3, between the light combining light source 6 and the light splitting sheet 3 and between the light splitting sheet 3 and the wavelength conversion device 2, so that focusing and shaping are performed on light, and the excitation effect and the output light quality are improved.

Example four

As shown in fig. 5, the difference from the third embodiment is that the light combining source 6 is a red light source, the wavelength conversion material layer on the wavelength conversion device 2 includes a cyan wavelength conversion material layer and a green wavelength conversion material layer, the cyan wavelength conversion material layer and the green wavelength conversion material layer respectively generate cyan radiation fluorescence and green radiation fluorescence under the irradiation of the excitation light source 1, the cyan wavelength conversion material layer and the green wavelength conversion material layer are circumferentially distributed along the rotation of the wavelength conversion device 2, the excitation light source 1 adopts a blue laser source, the dominant wavelength of blue excitation light emitted by the blue laser source is 440-465 nm, cyan radiation fluorescence generated by excitation of the cyan wavelength conversion material layer contains blue light components with the wavelength of 465-500 nm, and the radiation fluorescence generated by excitation of the wavelength conversion material layer and light emitted by the light combining light source 6 are combined to form white light to be output.

EXAMPLE five

As shown in fig. 6, the difference from the third embodiment is that the light combining light source 6 includes a red light combining light source and a blue light combining light source, the red light combining light source and the blue light combining light source are formed by cross arrangement of LEDs, LDs or other types of light sources, the wavelength conversion material layer on the wavelength conversion device 2 includes a green wavelength conversion material layer, the green wavelength conversion material layer generates green radiation fluorescence under the irradiation of the excitation light source 1, the excitation light source 1 adopts a blue laser light source, the dominant wavelength of blue excitation light emitted by the blue laser light source is 440 to 465nm, the red light combining light source and the blue light combining light source in the light combining light source 6 operate in a time-sharing manner, the blue light combining light source in the light combining light source 6 can be blue light with a wavelength of 465 to 500nm, and the radiation fluorescence generated by excitation of the wavelength conversion material layer and the light combining light emitted by the light source 6.

EXAMPLE six

As shown in fig. 7, the difference from the fifth embodiment is that the combined light source 6 includes a red combined light source 61 and a blue combined light source 62, and the red combined light source 61 and the blue combined light source 62 of the combined light source 6 are separate and independent light sources, the red combined light source is obliquely directed to the beam splitter 3 and then reflected by the beam splitter 3 to the same direction as the radiant fluorescence, a second beam splitter 7 is further disposed on the path of the radiant fluorescence, the second beam splitter 7 transmits green light and red light to reflect blue light, the blue combined light source 62 is obliquely directed to the second beam splitter 7 and then reflected by the second beam splitter 7 to the same direction as the radiant fluorescence, and finally the radiant fluorescence generated by the excitation of the wavelength conversion material layer and the combined light emitted by the red combined light source and the blue combined light source are output as white light.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (10)

1. A light source device is characterized by comprising an excitation light source (1) and a wavelength conversion device (2), wherein only a plurality of wavelength conversion material layers distributed along the rotation circumferential direction of the wavelength conversion device (2) are arranged on the wavelength conversion device, at least one wavelength conversion material layer is excited under the irradiation of the excitation light source (1) to generate radiant fluorescence which contains color light components which are the same as the excitation light source (1) in color but different in wavelength, and the radiant fluorescence generated by the excitation of all the wavelength conversion material layers is used for combining light to form white light to be output.

2. The light source device according to claim 1, wherein a beam splitter (3) is disposed between the excitation light source (1) and the wavelength conversion device (2), the beam splitter (3) reflects light of the excitation light source (1) and transmits the radiant fluorescence generated by the wavelength conversion material layer, or the beam splitter (3) transmits light of the excitation light source (1) and reflects the radiant fluorescence generated by the wavelength conversion material layer, the excitation light source (1) obliquely irradiates the beam splitter (3) and then is guided by the beam splitter (3) to irradiate the wavelength conversion device (2), and the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device (2) irradiates the beam splitter (3) and then is output.

3. The light source device according to claim 1, wherein the excitation light source (1) is a blue light source, and the wavelength conversion material layer on the wavelength conversion device (2) comprises a cyan wavelength conversion material layer.

4. The light source device according to claim 1, wherein the dominant wavelength of the excitation light source (1) is 440-465 nm, and the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device (2) contains color light components with the wavelength of 465-500 nm.

5. A light source device is characterized by comprising an excitation light source (1), a light combining light source (6) and a wavelength conversion device (2), wherein the wavelength conversion device (2) is only provided with a plurality of wavelength conversion material layers distributed along the rotation circumferential direction of the wavelength conversion device, and the wavelength conversion material layers are irradiated and excited by the excitation light source (1) to generate radiant fluorescence and combine light emitted by the light combining light source (6) into white light to be output.

6. The light source device according to claim 5, wherein the at least one wavelength conversion material layer on the wavelength conversion device (2) excited by the excitation light source (1) generates radiant fluorescence including a color light component having the same color as the excitation light source (1) but different wavelength.

7. The light source device according to claim 5, wherein a beam splitter (3) is disposed between the excitation light source (1) and the wavelength conversion device (2), the beam splitter (3) reflects light of the excitation light source (1) and transmits the radiant fluorescence generated by the wavelength conversion material layer, or the beam splitter (3) transmits light of the excitation light source (1) and reflects radiant fluorescence generated by the wavelength conversion material layer, the excitation light source (1) obliquely irradiates the beam splitter (3) and then is guided by the beam splitter (3) to irradiate the wavelength conversion device (2), and the radiant fluorescence generated by the excitation of the wavelength conversion material layer on the wavelength conversion device (2) is combined with the light emitted by the light combining source (6) and then is output.

8. The light source device according to claim 7, wherein the light splitting sheet (3) reflects the light from the light combining source (6), and the light combining source (6) is obliquely emitted to the light splitting sheet (3) and then guided by the light splitting sheet (3) to be combined with the radiant fluorescent light in the same direction for output.

9. The luminaire device according to any of claims 5 to 8, wherein the light-combining light source (6) and the excitation light source (1) operate in a time-sharing manner.

10. The light source device according to any one of claims 5 to 8, wherein the light combining source (6) comprises a light source having the same color and/or different color as the excitation light source (1).

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