CN106950785A - A kind of light supply apparatus and lighting device - Google Patents

Abstract

The invention protects a light source device, which includes a laser light source and a spectroscopic device located on the laser optical path. The spectroscopic device transmits part of the laser light to form the first laser light, and reflects part of the laser light to form the second laser light. The wavelength conversion device is located on the first optical path. first laser light and convert at least part of the first laser light into light of different wavelengths and then reflect it back to the spectroscopic device, the scattering reflection device is located on the second optical path, and convert the second laser light into second light of different light distribution It is reflected back to the spectroscopic device, and the spectroscopic device partly reflects the first light and partly transmits the second light, and the first light reflected by the spectroscopic device and the second light transmitted by the spectroscopic device are combined into one beam and emitted. This enables the beam splitting device to emit both the first light and the second light in any area on the outgoing light path, avoiding the adverse effects of the selective transmittance of the beam splitting device on the laser and the received laser light on the uniformity of the final outgoing light in the prior art , thereby improving the light uniformity of the light source.

Description

Light source device and lighting device

technical field

The invention relates to the lighting field, in particular to a light source device and a lighting device.

Background technique

At present, white light sources are widely used in the fields of lighting and projection display. Commonly used white light sources include LED and UHP bulbs, etc., which provide uniform white light beams and are used in lighting fields such as stage lights, theater lights, and searchlights, as well as LCD, LCOS and The projector field represented by DMD. For the LED light source, it has good reliability and color performance, but limited by the large etendue, the light beam in the lighting field is relatively divergent, and the brightness in the projection field is limited; for the bulb light source, its The required optical effect can be achieved, but its bottleneck lies in the lifespan. The lifespan of the light bulb light source is generally only a few hundred to one or two thousand hours, which greatly limits the promotion of its application. With the development of technology, the scheme of using semiconductor laser as excitation light source to excite phosphor powder as light source is gradually replacing traditional lighting source.

However, in practical applications, when the laser and the fluorescence excited by the laser are synthesized, the problem of light uniformity often occurs, which makes the color distribution of the emitted light uneven.

Contents of the invention

In view of the defects of poor color uniformity of the light source in the prior art, the present invention provides a light source device with good uniformity and high brightness:

It includes a laser light source for emitting laser light, including a spectroscopic device, which is located on the laser optical path. The spectroscopic device transmits part of the laser light to form the first laser light, and reflects part of the laser light to form the second laser light. The optical path where the first laser light is located is the first optical path. The optical path where the second laser light is located is the second optical path; it includes a wavelength conversion device, located on the first optical path, for receiving the first laser light, and converting at least part of the first laser light into light of different wavelengths to form the first light output, with a wavelength of The conversion device reflects the first light back to the spectroscopic device, and the spectroscopic device partially reflects the first light; includes a scattering reflection device, located on the second optical path, for converting the second laser light into a second light with a different light distribution, and converting the second laser light into a second light with a different light distribution The second light is reflected back to the spectroscopic device, and the spectroscopic device partially transmits the second light; the first light reflected by the spectroscopic device and the second light transmitted by the spectroscopic device are combined into one beam and emitted.

Preferably, a light shaping device is included, located on the laser light path between the laser light source and the spectroscopic device, and the light shaping device sequentially includes a convex lens, a concave lens and a scattering sheet along the direction of the laser light path.

Preferably, the spectroscopic device includes two or more transparent sheets stacked.

Preferably, there is an air gap between the transparent sheets.

Preferably, the spectroscopic device includes a first transparent sheet, the first transparent sheet is the transparent sheet closest to the wavelength conversion device among the transparent sheets, and the spectroscopic device also includes a filter film, which is located on the first transparent sheet close to the wavelength conversion device On the surface of the filter film transmits the laser light and reflects the first light.

Preferably, the light splitting device includes a second transparent sheet, the second transparent sheet is the farthest transparent sheet from the wavelength conversion device in each transparent sheet, and the light splitting device also includes an anti-reflection film, and the anti-reflection film is located on the second transparent sheet away from the wavelength conversion device. on the surface of the device.

Preferably, the spectroscopic device includes a first area and a second area, the first area partially transmits the laser light and partially reflects the laser light, and the second area reflects the first light and transmits the second light.

Preferably, the wavelength conversion device includes a fixed fluorescent powder sheet or a rotatable fluorescent color wheel.

The present invention also provides a light source device, including a laser light source for emitting laser light, including a beam splitting device located on the laser light path, the beam splitting device reflects part of the laser light to form a first laser light, and transmits a part of the laser light to form a second laser light, the first The optical path where the laser is located is the first optical path, and the optical path where the second laser is located is the second optical path; including a wavelength conversion device, located on the first optical path, for receiving the first laser and converting at least part of the first laser into different wavelengths After the light is emitted, the first light is formed, and the wavelength conversion device reflects the first light back to the spectroscopic device, and the spectroscopic device partially transmits the first light; including a scattering reflection device, located on the second optical path, for converting the second laser light into different The second light of the light distribution, and reflect the second light back to the spectroscopic device, and the spectroscopic device partially reflects the second light; the first light transmitted by the spectroscopic device and the second light reflected by the spectroscopic device are combined into one beam and emitted.

Preferably, the spectroscopic device includes two or more transparent sheets stacked.

Preferably, the spectroscopic device includes a first area and a second area, the first area partially transmits the laser light and partially reflects the laser light, and the second area transmits the first light and reflects the second light.

The present invention also provides an illuminating device, comprising the light source device described in any one of the above.

Compared with the prior art, the present invention includes the following beneficial effects:

By setting a spectroscopic device that can transmit part of the laser light and reflect part of the laser light on the laser light path, the laser light is respectively guided and incident on the wavelength conversion device and the scattering reflection device, and converted into the first light and the second light respectively. The device emits the first light and the second photosynthetic light, so that any area of the light-splitting device on the outgoing light path can emit both the first light and the second light, avoiding the interference of the laser and the receiving light by the light-splitting device in the prior art. The selective transmittance has an adverse effect on the uniformity of the final emitted light, thereby improving the uniformity of the light emitted by the light source.

Description of drawings

FIG. 1 is a schematic structural diagram of a light source device according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of a light splitting device of a light source device in Embodiment 1 of the present invention;

3 is a schematic structural diagram of a light source device according to Embodiment 2 of the present invention;

FIG. 4 is a schematic structural diagram of a light splitting device of a light source device in Embodiment 2 of the present invention;

5 is a schematic structural diagram of a light source device according to Embodiment 3 of the present invention;

FIG. 6 is a schematic structural diagram of a light source device according to Embodiment 4 of the present invention.

detailed description

The specific embodiment of the present invention provides a light source device with good uniformity and high brightness: it includes a laser light source for emitting laser light, including a beam splitting device, which is located on the laser optical path, and the beam splitting device transmits part of the laser light to form the first laser beam , and reflect part of the laser light to form a second laser light, the optical path where the first laser light is located is the first optical path, and the optical path where the second laser light is located is the second optical path; a wavelength conversion device is included, located on the first optical path, for receiving the first laser light, After converting at least part of the first laser light into light of different wavelengths, the first light is emitted, and the wavelength conversion device reflects the first light back to the spectroscopic device, and the spectroscopic device partly reflects the first light; including a scattering reflection device, located in the second On the optical path, it is used to convert the second laser light into the second light with different light distribution, and reflect the second light back to the spectroscopic device, and the spectroscopic device partially transmits the second light; the first light reflected by the spectroscopic device and the spectroscopic device The transmitted second light is combined into one beam and exits.

Different from some spectroscopic devices in the prior art, the region of the spectroscopic device of the present invention that can both transmit laser light and reflect laser light is not distinguished by setting two different sub-regions in this part to distinguish transmitted laser light and reflected laser light, namely This region achieves the effects of transmission and reflection through the same region of the same structure, and the spectral characteristics of the first laser and the second laser are also basically the same (the "same substrate" here means the same within the detection error range). Therefore, any region on the outgoing light path of the spectroscopic device can emit light with the same spectrum as the laser light emitted by the laser light source. However, in the light splitting device in the prior art, there are always some areas where laser light cannot be emitted, which will result in an area with uneven color in the entire section of the emitted light, which will have a huge adverse effect on image display.

Therefore, the present invention utilizes the special design of the spectroscopic device, neither using the wavelength selective characteristic to split the light, nor using the area selective characteristic to divide the light geometrically, so that part of the laser light is transmitted and part of the laser is reflected, and finally the effect of uniform outgoing light is achieved. All technical solutions of the present invention are implemented under this inventive concept.

Embodiments of the present invention will be described in detail below with reference to the drawings and implementation methods.

Embodiment one

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention. As shown in the figure, the light source device 100 includes a laser light source 101 , a spectroscopic device 105 , a wavelength conversion device 109 and a scattering reflection device 107 . Wherein the laser light source 101 is used to emit laser light, the light splitting device 105 is located on the laser light path, the light splitting device 105 transmits part of the laser light to form the first laser light, and reflects part of the laser light to form the second laser light, the light path where the first laser light is located is the first light path, the second light path The optical path where the laser is located is the second optical path. The wavelength conversion device 109 is located on the first optical path, and is used to convert at least part of the first laser light into light of different wavelengths after receiving the first laser light to form the first light output. The scattering reflection device 107 is located on the second optical path, and is used to convert the first laser light The second laser light is converted into a second light with a different light distribution. The wavelength conversion device 109 and the scattering reflection device 107 respectively reflect the first light and the second light to the spectroscopic device, and the spectroscopic device 105 partly reflects the first light and partly transmits the second light, and the first light reflected by the spectroscopic device 105 and the split light The second light transmitted by the device 105 is combined into one beam and emitted.

In this embodiment, the laser light source 101 can be a laser light source, a laser diode light source, or a light source composed of a laser diode array. Any laser light source used in the prior art can be used as the laser light source of the present invention.

In this embodiment, the wavelength conversion device 109 is a reflective wavelength conversion device, which includes a wavelength conversion layer and a reflective layer, wherein the reflective layer is located on the surface of the wavelength conversion layer away from the spectroscopic device. The wavelength conversion layer of the wavelength conversion device 109 absorbs the first laser light, and converts the first laser light into a received light different from the wavelength of the first laser light, and the received light and the unabsorbed first laser light are reflected by the reflective layer to form the first light emission (of course, the present invention also includes the case where the first laser light is completely absorbed and converted into the received light). The wavelength conversion layer includes fluorescent powder, phosphorescent material, and quantum dot luminescent material. In this embodiment, the laser light source is a blue light source, and the wavelength conversion device includes yellow phosphor (such as YAG phosphor). Of course, laser light sources in other wavelength ranges and wavelength conversion devices with other light-emitting characteristics may also be used in other embodiments of the present invention, and are not limited to the technical solutions in the above specific embodiments.

In this embodiment, the scattering reflection device 107 changes the light distribution of the incident laser light, and converts the Gaussian distributed laser light into Lambertian light, thereby improving the uniformity of the light and avoiding speckle after the light is emitted. The scattering reflection device 107 includes a scattering material layer, and the scattering material layer includes one or more of aluminum oxide, titanium oxide, barium sulfate, yttrium oxide, zirconium oxide, and zinc oxide. Optionally, the scattering material layer can also be Including materials such as glass powder for bonding. The scattering material layer in this embodiment uses scattering particles close to the wavelength of the laser light to scatter and reflect the second laser light. In other embodiments of the present invention, the scattering reflection device 107 may also use a scattering surface with uneven surface. In order to enhance the reflection performance of the scattering reflection device 107, a technical solution of stacking and combining the scattering reflection layer and the specular reflection layer can also be selected, which will not be repeated here.

In this embodiment, the wavelength converting device 109 may be a fixed fluorescent powder sheet, or may be a rotatable fluorescent color wheel driven by a driving device such as a motor. The scattering reflector 107 may also be a fixed scattering sheet or a rotatable scattering wheel.

In this embodiment, the laser light source 101 emits blue laser light, part of which is transmitted through the spectroscopic device and partially reflected by the spectroscopic device 105. The second light returns to the spectroscopic device 105 after being reflected by the scattering reflection device 107 . Finally, the yellow light reflected by the spectroscopic device 105 and the second blue light transmitted through the spectroscopic device 105 are combined to become white light and emitted.

In this embodiment, a light shaping device is also included, which is located on the laser light path between the laser light source 101 and the spectroscopic device 105. The light shaping device includes a convex lens 102, a concave lens 103, and a scattering sheet 104 in sequence along the direction of the laser light path. The convex lens 102 converges the laser beam emitted by the laser light source 101, and then collimates it by the concave lens 103 to obtain a beam whose cross-sectional area is compressed and reduced. The compressed collimated light beam is homogenized by the diffuser 104. Since the scattering characteristic of the diffuser 104 is rotationally symmetric, the light spot incident on the wavelength conversion device 109 and the scattering reflection device 107 is approximately circular. Through the light shaping device, a circular light spot with small divergence angle, uniform brightness and high brightness is obtained.

In this embodiment, further, it also includes a first focusing lens 108 located between the spectroscopic device 105 and the wavelength conversion device 109, the first focusing lens 108 further reduces the area of the light spot incident on the wavelength conversion device 109, and the small light spot is The etendue of the light generated by the wavelength conversion device 109 is small, so that the divergence angle of the final outgoing light is small. In the occasion where the light beam divergence angle of the beam illuminating lamp is required to be small and the light energy is concentrated, the present invention can meet the requirements for the beam illuminating lamp . Further, it also includes a second focusing lens 106 between the spectroscopic device 105 and the scattering reflection device 107, the second focusing lens 106 further reduces the spot area incident on the scattering reflection device 107, and the small light spot is on the scattering reflection device 107 The etendue of the generated light is small, so that the divergence angle of the final emitted light is small, and the present invention can meet the requirements for the beam illuminating lamp when the beam illuminating lamp is required to have a small beam divergence angle and concentrated light energy.

In this embodiment, since the first laser light cannot be completely absorbed by the wavelength conversion device 109, the first light may contain both the subject light and the first laser light. When the first light is reflected by the wavelength conversion device 109 back to the spectroscopic device At 105, the first laser light in the first light will again be partly transmitted and partly reflected, and part of the first laser light will be lost. Since the unabsorbed first laser light itself is less, it will not have a great impact on the outgoing light. Similarly, when the second laser light is converted into second light with different light distribution by the scattering reflection device 107 and reflected back to the spectroscopic device 105 , the second light is also partially transmitted and partially reflected. In practical applications, the proportion of blue light required for white light is less than that of yellow light. When the spectroscopic device 105 splits light for the first time, about 85% of the light is transmitted to form the first laser light, and 15% of the light is reflected to form the second laser light. In a rough model that does not consider light loss, 15% of the second laser light is incident on the spectroscopic device 105 again after being reflected by the scattering reflection device 107, and 85% of it is transmitted, so the lost light only accounts for 2.25% of the original laser light source. Compared with the technical solution of digging holes in the light splitter in the prior art, the light loss has no obvious disadvantage. Since the spectroscopic device 105 is overall uniform, the first light reflected by the spectroscopic device 105 and the second light transmitted are respectively uniform in light distribution, and the combined light is also uniform in color.

In this embodiment, the spectroscopic device includes two or more transparent sheets stacked. Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of the spectroscopic device 105 of this embodiment. The spectroscopic device 105 in FIG. 2 includes two transparent plates 1051 and 1052 . When the laser is incident on the transparent sheet, reflection and refraction occur simultaneously on each surface of the transparent sheet, that is, the transmittance of the transparent sheet to the laser is not 100%. It is realized by using different transmissions in different regions of the light splitting device (for example, setting a hollow area). The light transmitted through the two transparent sheets is the first laser light, and the reflected light is the second laser light.

The present invention uses two or more transparent sheets stacked to set up, which is to use the superposition of the function of the transparent sheets to partially reflect light. The more light there is, the smaller the ratio of the luminous flux of the first laser to the second laser. In this way, the ratio of the first laser to the second laser can be simply adjusted.

In this embodiment, there is an air gap between the transparent sheet 1051 and the transparent sheet 1052 , and the air gap allows reflection and refraction to occur when light exits from the transparent sheet 1052 and enters 1051 due to the difference in refractive index between the front and back of the interface. If the transparent sheet 1051 and the transparent sheet 1052 are directly bonded, it may cause light to be directly transmitted through the transparent sheet 1052 when it enters the 1051 without reflection and refraction. At this time, the transparent sheet 1051 and the transparent sheet 1052 are equivalent to a transparent sheet, which means This will greatly reduce the transmissive reflection function of the spectroscopic device 105 . In some cases, the present invention can also use only one transparent sheet as the light splitting device, which will have requirements on the material and internal structure of the transparent sheet, because it is difficult to obtain a light splitting device with proper transmission and reflectance ratio through a single transparent sheet , this specific technology is not within the scope of discussion of the present invention, and the technical solution using materials and internal structures and the technical solution in which multiple transparent sheets are superimposed in this embodiment are two different sub-technical solutions, these two technical solutions All can be included in the inventive concept of the present invention.

In this embodiment, as shown in FIG. 2 , the spectroscopic device 105 further includes a filter film 1053 and an anti-reflection film 1054 . Wherein, the filter film 1053 is located on the surface of the first transparent sheet 1051, and the first transparent sheet 1051 is the transparent sheet closest to the wavelength conversion device 109 among the transparent sheets, and the filter film 1053 is located on the first transparent sheet 1051 close to the wavelength conversion device. On the surface of the device 109; the antireflection film 1054 is positioned on the surface of the second transparent sheet 1052, and the second transparent sheet 1052 is the transparent sheet farthest from the wavelength conversion device 109 in each transparent sheet, and the antireflection film 1054 is positioned at the second transparent sheet away from the surface of the wavelength converting device 109 .

In this embodiment, the filter film 1053 can transmit laser light, so that the first laser light is incident on the wavelength conversion device 109 through the spectroscopic device. At the same time, the filter film 1053 can also reflect the first light emitted by the wavelength conversion device 109 and guide it to to the exit light path.

In this embodiment, the anti-reflection film 1054 enhances the transmittance of the laser light, and adjusts the laser transmittance reflectance of the spectroscopic device 105, so that the ratio of the first light and the second light in the emitted light is controllable. In the present invention, adding the anti-reflection film 1054 is a preferred technical solution, even if there is no anti-reflection film in the spectroscopic device 105, the functions of transmission and reflection can be realized.

Embodiment two

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of a light source device according to Embodiment 2 of the present invention. The difference between this embodiment and the first embodiment is that the spectroscopic device 205 is slightly different from the spectroscopic device 105 in the first embodiment.

As shown in FIG. 4 , FIG. 4 is a schematic structural diagram of the light splitting device 205 of the light source device 200 in the second embodiment of the present invention. Wherein, the spectroscopic device 205 includes a first area 2051 and a second area 2052 . The first region 2051 partially transmits the laser light and partially reflects the laser light, and the second region 2052 reflects the first light and transmits the second light.

In this embodiment, the first region 2051 of the spectroscopic device 205 is the same as the spectroscopic device 105 in Embodiment 1, and its structure and function can refer to the description of the pair of spectroscopic devices 105 in the above-mentioned embodiment. That is to say, the first region 2051 of the spectroscopic device 205 of this embodiment may also be composed of two or more transparent sheets stacked, with an air gap between the transparent sheets, and the first region 2051 may also include a light filter. film and AR coating.

In this embodiment, the second region 2052 is a region for combining light using wavelength characteristics. The first light (such as yellow light) from the wavelength conversion device 209 and the second light (such as blue light) from the scattering reflection device 207 are respectively incident from both sides of the second region 2052, the first light is reflected, and the second light is transmitted , so that the two beams of light combine into one beam to emerge.

In the first embodiment, the spectroscopic device 105 has only one uniform area, but in this embodiment, the area of the first area 2051 is smaller than that of the spectroscopic device 105 , and the second area 2052 is set around the first area 2051 .

First, the laser light generated by the laser light source 201 is shaped by the light shaping device, and then incident on the first region 2051, but not on the second region 2052, which greatly reduces the cross-sectional area of the beam and facilitates the generation of small wavelengths on the wavelength conversion device 109. spot.

Secondly, as described in the first embodiment above, the second light will be lost at the spectroscopic device 105. In this embodiment, after the second light is reflected by the scattering reflection device 207, it covers the first area 2051 and the second area 2052, Wherein, the second light incident on the first region 2051 produces the same light loss ratio as in Embodiment 1, while the second light incident on the second region 2052 has a higher transmittance, thereby reducing the light loss ratio of the second light. loss.

Compared with the first embodiment, the design of the second embodiment is more complicated, but it also brings beneficial effects such as reducing light loss.

Embodiment three

Please refer to FIG. 5 , which is a schematic structural diagram of a light source device according to Embodiment 3 of the present invention. The difference between this embodiment and the first embodiment is that the positions of the wavelength conversion device and the scattering reflection device are exchanged.

The light source device 300 of this embodiment includes a laser light source 301 , a spectroscopic device 305 , a wavelength conversion device 309 and a scattering reflection device 307 . Wherein the laser light source 301 is used to emit laser light, the light splitting device 305 is located on the laser light path, the light splitting device 305 reflects part of the laser light to form the first laser light, and transmits part of the laser light to form the second laser light, the light path where the first laser light is located is the first light path, the second light path The optical path where the laser is located is the second optical path. The wavelength conversion device 309 is located on the first optical path, and is used to convert at least part of the first laser light into light of different wavelengths after receiving the first laser light to form the first light output. The scattering reflection device 307 is located on the second optical path, and is used to convert the first laser light The second laser light is converted into a second light with a different light distribution. The wavelength conversion device 309 and the scattering reflection device 307 respectively reflect the first light and the second light to the spectroscopic device, the spectroscopic device 305 partially transmits the first light and partly reflects the second light, the first light transmitted by the spectroscopic device 305 and the split light The second light reflected by the device 305 is combined into one beam and emitted.

The transmission and reflection characteristics of the spectroscopic device 305 in this embodiment are just opposite to those of the spectroscopic device 105 in the first embodiment. In this embodiment, the spectroscopic device 305 includes two or more transparent sheets stacked. In practical applications, more laser light is required to be reflected to the wavelength converting device 309, so the number of transparent plates in the light splitting device 305 will be much larger than that in Embodiment 1. This will bring about the problems of increased light loss (optical absorptivity cannot be 0), large structural volume, and aggravated optical path misalignment (optical path offset caused by refraction). This problem is not within the scope of discussion of the present invention and does not affect the present invention. Embodiments improve the effect of color uniformity of emitted light.

For descriptions of other components in this embodiment, please refer to the description of Embodiment 1, and details are not repeated here.

Embodiment Four

Please refer to FIG. 6 . FIG. 6 is a schematic structural diagram of a light source device according to Embodiment 4 of the present invention. The difference between the present embodiment and the second embodiment is that the positions of the wavelength conversion device and the scattering reflection device are exchanged.

The light source device 400 of this embodiment includes a laser light source 401 , a spectroscopic device 405 , a wavelength conversion device 409 and a scattering reflection device 407 . Wherein the laser light source 401 is used to emit laser light, the light splitting device 405 is located on the laser light path, the light splitting device 405 reflects part of the laser light to form the first laser light, and transmits part of the laser light to form the second laser light, the light path where the first laser light is located is the first light path, the second light path The optical path where the laser is located is the second optical path. The wavelength conversion device 409 is located on the first optical path, and is used to convert at least part of the first laser light into light of different wavelengths after receiving the first laser light to form the first light output. The scattering reflection device 407 is located on the second optical path, and is used to convert the first laser light The second laser light is converted into a second light with a different light distribution. The wavelength conversion device 409 and the scattering reflection device 407 respectively reflect the first light and the second light to the spectroscopic device, the spectroscopic device 405 partially transmits the first light and partly reflects the second light, the first light transmitted by the spectroscopic device 405 and the split light The second light reflected by the device 405 is combined into one beam and emitted.

Same as the second embodiment, the spectroscopic device 405 of this embodiment also includes two regions, wherein the first region transmits part of the laser light and reflects part of the laser light, and the difference is that the second region transmits the first light and reflects the second light.

As described in Embodiment 5, this embodiment also requires more laser light to be reflected by the first region to the wavelength conversion device 409. In the case of the same material of the transparent sheet, the number of transparent sheets required is also more than that of the embodiment The number of transparent slices in two. However, the area of the first region in this embodiment is smaller than that of the spectroscopic device 305 in the fifth embodiment, so the problems of large structural volume and optical path misalignment as described in the fifth embodiment will not be too serious in this embodiment.

For the description of other components in this embodiment, please refer to the description of Embodiment 2, and details will not be repeated here.

Another embodiment of the present invention also provides an illuminating device, which includes the light source device of any one of the above embodiments, and further includes components such as a lens group arranged on the light path of the outgoing light of the spectroscopic device.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above is only the embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (12)

1. A light source device comprising a laser light source for emitting laser light, characterized in that: It includes a beam splitting device, which is located on the laser light path. The beam splitting device transmits part of the laser light to form the first laser light, and reflects part of the laser light to form the second laser light. The light path where the first laser light is located is the first light path, and the light path where the second laser light is located is the second light path. ; It includes a wavelength conversion device, located on the first optical path, for receiving the first laser light, and converting at least part of the first laser light into light of different wavelengths to form the first light output, and the wavelength conversion device takes the first laser light light is reflected back to the beam splitting device, the beam splitting device partially reflecting the first light; comprising a scattering reflection device, located on the second optical path, for converting the second laser light into a second light with a different light distribution, and reflecting the second light back to the spectroscopic device, and the spectroscopic device partially transmits second light; The first light reflected by the light splitting device and the second light transmitted by the light splitting device are combined into one beam and emitted. 2. The light source device according to claim 1, characterized in that it comprises a light shaping device, located on the laser light path between the laser light source and the light splitting device, and the light shaping device is sequentially along the direction of the laser light path Including convex lens, concave lens and diffuser. 3. The light source device according to claim 1, wherein the light splitting device comprises two or more transparent sheets stacked. 4. The light source device according to claim 3, wherein there is an air gap between the transparent sheets. 5. The light source device according to claim 3, wherein the light splitting device comprises a first transparent sheet, and the first transparent sheet is the transparent sheet closest to the wavelength conversion device among the transparent sheets, and the The spectroscopic device further includes a filter film, which is located on the surface of the first transparent sheet close to the wavelength conversion device, and the filter film transmits the laser light and reflects the first light. 6. The light source device according to claim 3, wherein the light splitting device comprises a second transparent sheet, and the second transparent sheet is the transparent sheet farthest from the wavelength conversion device among the transparent sheets, so The light splitting device further includes an anti-reflection film, and the anti-reflection film is located on the surface of the second transparent sheet away from the wavelength conversion device. 7. The light source device according to claim 1, wherein the spectroscopic device comprises a first area and a second area, the first area partially transmits the laser light and partially reflects the laser light, the second area A region reflects the first light and transmits the second light. 8. The light source device according to claim 1, wherein the wavelength conversion device comprises a fixed phosphor sheet or a rotatable fluorescent color wheel. 9. A light source device, comprising a laser light source for emitting laser light, characterized in that: It includes a beam splitting device, which is located on the laser light path. The beam splitting device reflects part of the laser light to form the first laser light, and transmits part of the laser light to form the second laser light. The light path where the first laser light is located is the first light path, and the light path where the second laser light is located is the second light path. ; It includes a wavelength conversion device, located on the first optical path, for receiving the first laser light, and converting at least part of the first laser light into light of different wavelengths to form the first light output, and the wavelength conversion device takes the first laser light light is reflected back to the spectroscopic device, the spectroscopic device partially transmits the first light; comprising a scattering reflection device, located on the second optical path, for converting the second laser light into a second light with a different light distribution, and reflecting the second light back to the spectroscopic device, and the spectroscopic device partly reflects second light; The first light transmitted by the light splitting device and the second light reflected by the light splitting device are combined into one beam and emitted. 10 . The light source device according to claim 9 , wherein the light splitting device comprises two or more transparent sheets stacked. 11 . 11. The light source device according to claim 9, wherein the spectroscopic device comprises a first area and a second area, the first area partially transmits the laser light and partially reflects the laser light, the second area A region transmits the first light and reflects the second light. 12. A lighting device, comprising the light source device according to any one of claims 1-11.