WO2021027212A1 - Laser illuminating light source - Google Patents

Abstract

The present invention relates to the technical field of illuminating light sources, and specifically sets forth a laser illuminating light source, comprising a laser array, an excited module and a focusing lens. The laser array comprises a plurality of lasers that are arranged in an array and used for emitting multi-beam excitation light. The excited module comprises a wavelength conversion device used for forming a plurality of excited spots and performing multi-spot conversion on the multi-beam excitation light emitted by the laser array to convert same into excited laser light; and an optical path adjusting device used for guiding the multi-beam excitation light and the excited laser light into the focusing lens. The focusing lens is used for focusing received multi-beam laser light onto a light source focusing surface. The present invention sets forth a laser illuminating light source. Multi-beam excitation light emitted by the laser array is not converged to one spot for excitation and conversion, but is transmitted to a wavelength conversion device that forms a plurality of excited spots for multi-spot conversion. By means of diffusing heat sources, the problem in which heat from light concentration being concentrated burns the wavelength conversion device is solved, and the service life of the light source is increased.

Description

A laser lighting source Technical field

The present invention relates to the technical field of illumination light sources, and more specifically, to a laser illumination light source.

Background technique

In beam lighting applications, most of the traditional beam lighting light sources use high-power bulbs. Due to the short arc of the bulb and the small luminous point, the high luminous flux per unit area makes the bulb light source dominate the beam lighting. . However, light bulbs have problems such as low energy efficiency, short life span, mercury pollution, and poor uniformity between the center and the edge of the beam spot.

The laser light source is a point light source. On the platform of the beam lamp, it has a much greater advantage than the bulb beam lamp. The laser light source can converge multiple lasers into one point, and then obtain white light through the wavelength converter device (or obtain white light by combining the RBG monochromatic laser light). As shown in Fig. 7, it is an existing laser light source. After multiple laser tubes 6 emit excited blue light 401 and pass through the reflector, the reflected blue light 301 is guided to the phosphor 8 by the anti-blue and yellow dichroic mirror 2 , And guide the transmitted excited blue light 302 to the side of the Lambertian scatterer 9, the phosphor 8 is excited to emit yellow light 501 through the dichroic mirror 2, and merge with the blue light 303 reflected by the Lambertian scatterer 9 A beam of white light 7, at this time, part of the yellow light 501 is reflected to form the reflected yellow light 502, and part of the reflected blue light 303 is transmitted through the dichroic mirror 2 to form the transmitted blue light 304. This solution uses the dichroic mirror 2 to split and combine the incident blue light and the excited yellow light, so as to achieve the purpose of finally mixing into white light. Phosphor 8/Lambertian scatterer 9 is a wavelength conversion device. When the phosphor 8/Lambertian scatterer 9 completes yellow light conversion or blue reflection, it converges the light beam into one point, but multiple lasers When converging into one point, the laser energy density is relatively high, which will easily burn out the wavelength conversion device, thereby affecting the life of the light source.

technical problem

The present invention aims to overcome the above-mentioned defects in the prior art and provide a laser illumination light source, which can solve the problem of the shortage of bulbs and the burning of the wavelength conversion device due to concentrated heat concentration and increase the life of the light source.

Technical solutions

To achieve the above objective, the technical solution adopted by the present invention is to provide a laser illumination light source, including a laser array, an excited module, and a focusing lens; the laser array includes a plurality of lasers arranged in an array and is used to emit multiple excitation lights Light; The excited module includes a wavelength conversion device used to form multiple excited points and used to convert the multiple excitation light rays emitted by the laser array into the laser light, and used to convert multiple excitation light rays and laser light The light path adjusting device is used to guide the light to the focusing lens; the focusing lens is used to focus the received multiple laser light rays on the focusing surface of the light source.

In the above solution, the multiple excitation light rays emitted by the laser array are not converged into one point for excitation conversion, but are transmitted to a wavelength conversion device that forms multiple excitation points for multi-point conversion, and the heat of concentration is solved by dispersing heat sources. Focus on the problem of burning out the wavelength conversion device and increase the life of the light source.

Preferably, each excitation light ray emitted by the laser array is arranged corresponding to one excitation point of the excited module; or each excitation light ray emitted by the laser array is arranged correspondingly to a plurality of excitation points of the excited module; or A part of the multiple excitation light rays emitted by the laser array is arranged corresponding to an excited point of the excited module. By guiding a beam of excitation light rays to one or more excitation points, or a part of the excitation light rays to an excitation point setting, the excitation light rays emitted by the laser array are distributed to different excitation points. Stimulate the conversion to achieve the purpose of dispersing heat sources.

Preferably, the specific structure of the excited module is divided into the following three major solutions.

The first big plan includes the following two special cases.

The first special case solution: there are multiple excited modules, each of which includes a blue excited module and a yellow light excited module; each blue excited module includes a blue wavelength conversion device and a second A collimating lens group, each yellow light excitation module includes a yellow light wavelength conversion device and a first collimating lens group, the first collimating lens group is a light path adjusting device and is used to collimate light; laser array and yellow light A two-way light splitting color plate as a light path adjustment device is arranged between the excited modules, which is used to split the purple excitation light rays emitted by the laser array, so that a part of the purple excitation light rays are converged in the yellow through the first collimating lens group. The light wavelength conversion device converts into yellow light, so that another part of the purple excitation light is condensed into the blue light wavelength conversion device through the first collimating lens group to be converted into blue light; the dichroic color film is also used to convert the second light The nearly parallel yellow light and the nearly parallel blue light collimated by a collimating lens group are combined into white light. Preferably, the blue excitation module is arranged in the direction of the laser array light output, the yellow light excitation module is arranged in the vertical direction of the laser array light output, and the angle between the direction of the laser array and the direction of the dichroic color film is 45°; the wavelength of yellow light The conversion device is a structure in which a phosphor powder layer is coated on the surface of a highly reflective material.

The second special case solution: There are multiple excited modules, each of which includes a blue reflection module and a yellow light excitation module; each blue reflection module is a light path adjustment device and includes a Lambertian type A scattering device and a first collimating lens group. Each yellow light excitation module includes a yellow light wavelength conversion device and a first collimating lens group. The first collimating lens group is an optical path adjusting device and is used for collimating light; Between the array and the yellow light excitation module, there is a dichroic color plate as a light path adjustment device, which is used to split the blue excitation light rays emitted by the laser array, so that a part of the blue excitation light rays pass through the first collimation The lens group converges on the yellow light wavelength conversion device to convert into yellow light, so that another part of the blue excitation light is converged on the Lambertian scattering device through the first collimating lens group to reflect the blue light; the dichroic color film is also used The near-parallel yellow light and the near-parallel blue light collimated by the first collimating lens group are combined into white light. Preferably, the blue reflection module is arranged in the light emission direction of the laser array, the yellow light excitation module is arranged in the vertical direction of the laser array light emission, and the angle between the direction of the laser array and the direction of the dichroic color film is 45°; yellow light wavelength conversion The device is a structure in which the surface of a highly reflective material is coated with a phosphor powder layer, and the Lambertian scattering device is a Gaussian diffuse reflective material structure.

The second big scheme: the excited module is a plurality of white light excited modules; each white light excited module includes a white light wavelength conversion device and a first collimating lens group, and the surface of the white light wavelength conversion device is provided with diffuse reflection material The mixed material layer of the powder phosphor powder, the diffuse reflection material layer as the light path adjustment device, the powder phosphor powder layer as the wavelength conversion device, the first collimating lens group is the light path adjustment device and is used to collimate light; the laser array and The white light excitation module is provided with a regional light splitting guide as a light path adjustment device, which is used to guide the excitation light emitted by the laser array to converge on the white light wavelength conversion device through the first collimating lens group; the white light wavelength conversion device It is used to diffusely reflect part of the excitation light and convert the other part of the excitation light into the laser light; the diffuse reflection light and the laser light are mixed into white light light which is collimated by the first collimating lens group and then focused by the focusing lens on the focusing surface of the light source on.

The second big plan includes the following two small plans.

The first small plan: The white light excitation module is set in the vertical direction of the laser array, the regional light-splitting guide is a regional light-splitting color plate, and the angle between the direction of the laser array and the direction of the regional light-splitting color plate is 45°; It is used to reflect the excitation light emitted by the laser array to the white light excitation module and transmit the light converted by the white light excitation module to the focusing lens.

The second small plan: The white light excitation module is set in the direction of the laser array, and the regional light splitting guide is a regional transmissive color film. The angle between the direction of the laser array and the direction of the regional transmissive color film is 45°; The transmission total reflection color film is provided with a transmission area for transmitting the excitation light rays emitted by the laser array to the white light excitation module and reflects the light converted by the white light excitation module to the focusing lens.

The third major solution: the excited module is a plurality of white light excited modules; each white light excited module includes a white light wavelength conversion device and a first collimating lens group, and the surface of the white light wavelength conversion device is provided with diffuse reflection material The mixed material layer of powder phosphor powder, the diffuse reflection material layer as the light path adjustment device, the powder phosphor powder layer as the wavelength conversion device, the first collimating lens group is the light path adjustment device and is used to collimate light; the laser array emits The excitation light rays directly irradiate the white light wavelength conversion device; the white light wavelength conversion device is used to diffusely reflect part of the excitation light light, and the other part of the excitation light light is converted into the laser light; the diffuse reflection light and the laser light pass through the first collimator lens After collimation, the group is mixed into white light rays and is focused by the focusing lens on the focusing surface of the light source.

Preferably, in the three major solutions of the specific structure of the excited module, the excited point of each excited module is set in one-to-one correspondence with each laser to convert a beam of excitation light emitted by the laser.

Preferably, a homogenization device is provided between the laser array and the wavelength conversion device; or/and a homogenization device is provided between the wavelength conversion device and the focusing lens. The light homogenizing device is a Gaussian diffuser or a micro lens array for uniform light.

Preferably, it further comprises a second collimating lens group arranged in a one-to-one correspondence with each laser and used for collimating the excitation light rays emitted by the laser.

Beneficial effect

Compared with the prior art, the beneficial effects of the present invention are:

The multiple excitation light rays emitted by the laser array are not converged into one point for excitation conversion, but are transmitted to the wavelength conversion device forming multiple excitation points for multi-point conversion, and the wavelength conversion is solved by dispersing the heat source to solve the concentrated heat concentration. The problem of device burnout increases the life of the light source.

Description of the drawings

Fig. 1 is a structural diagram of the optical path of a laser illumination light source in Example 1.

2 is a structural diagram of the optical path of an excited module corresponding to the conversion of excitation light emitted by a laser in Embodiment 1, wherein the laser emits purple excitation light.

3 is a structural diagram of the optical path of an excited module corresponding to the conversion of the excitation light emitted by a laser in Embodiment 1, wherein the laser emits blue excitation light.

4 is a structural diagram of the optical path of a laser illumination light source in Embodiment 2.

Fig. 5 is a structural diagram of the optical path of a laser illumination light source in embodiment 3.

6 is a structural diagram of the optical path of a laser illumination light source in Embodiment 4.

Fig. 7 is a diagram of the optical path structure of a laser light source in the prior art.

Reference signs: 2 dichroic mirror; 6 laser tube; 7 white light; 8 phosphor; 9 Lambertian scatterer; excited blue light reflected by 301; excited blue light transmitted by 302; blue light reflected by 303; 304 transmitted Blue light emitted; 401 excited blue light; 501 yellow light; 502 reflected yellow light; 11 laser array; 12 second collimating lens group; 13 dichroic color film; 14 yellow light excited module; 15 blue light excited Module; 16 focusing lens; 17 light source focusing surface; 19 first collimating lens group; 20 blue reflection module; 23 area dichroic color plate; 24 white light excitation module; 33 area transmission total reflection color plate; 241 white light wavelength Conversion device; 141 yellow wavelength conversion device; 151 blue wavelength conversion device; 181 near-parallel array excitation light rays; 182 near-parallel yellow rays; 183 near-parallel blue rays; 201 Lambertian scattering devices; 272 near-parallel rays.

Embodiments of the invention

The drawings of the present invention are only used for exemplary description, and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, some well-known structures in the drawings and their descriptions may be omitted It is understandable.

Example 1

As shown in FIG. 1, this embodiment provides a laser illumination light source, including a laser array 11, an excited module, and a focusing lens 16. The laser array 11 includes multiple lasers arranged in an array and is used to emit multiple excitation light rays The excited module includes a wavelength conversion device used to form a plurality of excited points and used to convert the multiple excitation light rays emitted by the laser array into the laser light, and used to convert the multiple excitation light rays and the laser light rays The optical path adjustment device guided to the focusing lens; the focusing lens 16 is used to focus the received multiple laser beams on the focusing surface 17 of the light source.

In this embodiment, the multiple excitation light rays emitted by the laser array 11 are not converged into one point for excitation conversion, but are transmitted to a wavelength conversion device that forms multiple excitation points for multi-point conversion. The concentration of light and heat will burn out the wavelength conversion device and increase the life of the light source.

Wherein, a homogenization device is arranged between the laser array 11 and the wavelength conversion device; or/and a homogenization device is arranged between the wavelength conversion device and the focusing lens 16. The light homogenizing device is a Gaussian diffuser or a micro lens array for uniform light.

In addition, it also includes a second collimating lens group 12 arranged in a one-to-one correspondence with each laser and used for collimating the excitation light rays emitted by the laser.

Wherein, each excitation light ray emitted by the laser array 11 is set corresponding to one excitation point of the excited module; or each excitation light ray emitted by the laser array 11 is set correspondingly to multiple excitation points of the excited module; Or part of the multiple excitation light beams emitted by the laser array 11 is set corresponding to an excited point of the excited module. By directing a beam of excitation light rays to one or more excitation points, or guiding a part of the excitation light rays to one excitation point setting, the excitation light rays emitted by the laser array 11 are distributed to different excitation points Perform excitation conversion to achieve the purpose of dispersing the heat source. In this embodiment, the excitation point of each excited module is set in a one-to-one correspondence with each laser to convert a beam of excitation light emitted by the laser.

There are two special cases for the specific structure of the excited module in this embodiment.

Special case 1: As shown in Figure 2, there are multiple excited modules, each of which includes a blue excited module 15 and a yellow light excited module 14; each blue excited module 15 includes The blue light wavelength conversion device 151 and the first collimating lens group 19, each yellow light excitation module 14 includes a yellow light wavelength conversion device 141 and a first collimating lens group 19, the first collimating lens group 19 is optical path adjustment The device is also used to collimate the light; between the laser array 11 and the yellow light excitation module 14 there is a dichroic color plate 13 as a light path adjustment device, which is used to split the purple excitation light emitted by the laser array 11 to make A part of the purple excitation light is converged on the yellow wavelength conversion device 141 through the first collimating lens group 19 to be converted into yellow light, and another part of the excitation light is condensed to the blue wavelength conversion device 151 through the first collimating lens group 19 Converted into blue light; the dichroic color film 13 is also used to combine the nearly parallel yellow light 182 and the nearly parallel blue light 183 collimated by the first collimating lens group 19 into white light. In special case 1, the blue excitation module 15 is arranged in the direction of the laser array 11, the yellow light excitation module 14 is arranged in the vertical direction of the laser array 11, and the direction of the laser array 11 is sandwiched between the direction of the dichroic color film 13 The angle is 45°; the yellow light wavelength conversion device 141 is a structure in which the surface of the highly reflective material is coated with a phosphor powder layer.

Special case 2: As shown in Figure 3, there are multiple excited modules, each of which includes a blue reflection module 20 and a yellow light excitation module 14; each blue reflection module 20 is a light path adjustment device Each includes a Lambertian scattering device 201 and a first collimating lens group 19. Each yellow light excitation module 14 includes a yellow light wavelength conversion device 141 and a first collimating lens group 19, and the first collimating lens group 19 is a light path adjustment device and used to collimate light; between the laser array 11 and the yellow light excitation module 14 is provided with a dichroic color plate 13 as a light path adjustment device for the blue excitation light emitted by the laser array 11 The light is split so that a part of the blue excitation light is condensed by the first collimating lens group 19 to the yellow wavelength conversion device 141 to be converted into yellow light, and the other part of the blue excitation light is converged by the first collimating lens group 19 The Lambertian scattering device 201 reflects blue light; the dichroic color film 13 is also used to combine the nearly parallel yellow light 182 and the nearly parallel blue light 183 collimated by the first collimating lens group 19 into White light rays. The Lambertian scattering device 201 is of Gaussian diffuse reflection material structure. In the second special case, the blue reflection module 20 is arranged in the light emission direction of the laser array 11, the yellow light excitation module 14 is arranged in the vertical direction of the light output of the laser array 11, and the angle between the direction of the laser array 11 and the direction of the dichroic color film 13 It is 45°; the yellow light wavelength conversion device 141 is a structure of a highly reflective material coated with a phosphor powder layer, and the Lambertian scattering device 201 is a Gaussian diffuse reflective material structure.

In this embodiment, the excited module of Special Example 2 is selected; the laser array 11 includes a plurality of blue lasers arranged in an array, and the second collimating lens group 12 is arranged in a one-to-one correspondence with each blue laser; each blue laser emits The excitation light rays with a wavelength of 440-460nm, all the multiple excitation light rays emitted by the blue laser are collimated by the second collimating lens group 12 into a nearly parallel array excitation light rays 181.

Among them, the surface of the dichroic color film 13 is partially coated with a blue and transparent yellow film, which is used to reflect 70-80% of light with a wavelength of 400-480nm and transmit 20-30% of light with a wavelength of 480-800nm; all blue lasers After the emitted multiple excitation light rays are collimated by the second collimating lens group 12 into a near-parallel array excitation light ray 181, the dichroic color film 13 is used to split the near-parallel array excitation light ray 181 to make 70- 80% of the nearly parallel array excitation light rays 181 are reflected toward the yellow light excitation module 14, and 20-30% of the nearly parallel array excitation light rays 181 are transmitted toward the blue reflection module 20.

Among them, a part of the nearly parallel array excitation light rays 181 reflected to the yellow light excitation module 14 are condensed by the first collimating lens group 19 to the yellow light wavelength conversion device 141 to be converted into Lambertian yellow light rays of 480-800 nm. The Burr-type yellow light is collimated by the first collimating lens group 19 into a nearly parallel yellow light 182, and the nearly parallel yellow light 182 passes through the dichroic color filter 13 and irradiates the focusing lens 16 direction.

In addition, another part of the nearly parallel array excitation light rays 181 transmitted to the blue reflection module 20 are converged on the Lambertian scattering device 201 through the first collimating lens group 19 to be diffusely reflected and converted into Lambertian blue light. The type blue light is collimated by the first collimating lens group 19 into a nearly parallel blue light 183, and the nearly parallel blue light 183 is reflected by the dichroic color film 13 to the direction of the focusing lens 16.

Among them, the near-parallel yellow light 182 and the near-parallel blue light 183 are combined at the dichroic color film 13 into white near-parallel light rays, which are focused on the light source focusing surface 17 by the focusing lens 16.

Example 2

As shown in FIG. 4, this embodiment provides a laser illumination light source. The difference between Embodiment 2 and Embodiment 1 is that the specific structure of the excited module is different, so that the excitation light emitted by the laser array 11 is transmitted to the wavelength conversion device The light path is different. Specifically: the excitation module is a plurality of white light excitation modules 24; each white light excitation module 24 includes a white light wavelength conversion device 241 and a first collimating lens group 19, and the white light wavelength conversion device 241 is provided with a diffuser on the surface. The mixed material layer of reflective material and powder phosphor powder (titanium oxide or aluminum oxide powder), the diffuse reflective material layer is used as the optical path adjustment device, the powder phosphor powder layer is used as the wavelength conversion device, and the first collimating lens group 19 is The optical path adjustment device is used to collimate light; a regional light-dissociation guide body as a light path adjustment device is arranged between the laser array 11 and the white light excitation module 24, which is used to guide the excitation light rays emitted by the laser array 11 through the first collimating lens The group 19 is concentrated on the white light wavelength conversion device 241; the white light wavelength conversion device 241 is used to diffusely reflect a part of the excitation light and convert the other part of the excitation light into the laser light; the diffuse reflection light and the laser light are mixed into white light light through the first A collimating lens group 19 is collimated by the focusing lens 16 to focus on the light source focusing surface 17.

Among them, the white light excitation module 24 is arranged in the vertical direction of the laser array 11, the regional light splitting guide body is the regional dichroic color film 23, and the angle between the direction of the laser array 11 and the direction of the regional dichroic color film 23 is 45°; The sheet 23 is used to reflect the excitation light emitted by the laser array 11 to the white light excitation module 24 and transmit the light converted by the white light excitation module 24 to the focusing lens 16.

In this embodiment, a part of the surface area of the regional dichroic plate 23 is coated with a partial blue and transparent yellow film, which is used to totally reflect light with wavelengths of 400-480nm and transmit light with wavelengths of 480-800nm; near-parallel array light 181 is The area dichroic color film 23 totally reflects toward the white light excitation module 24.

In addition, the white light wavelength conversion device 241 is used to diffusely reflect a part of the near-parallel array excitation light rays 181, and another part of the near-parallel array excitation light rays 181 are converted into laser light; the diffusely reflected light and the laser light are mixed into white light rays.

In this embodiment, the white light rays are collimated by the first collimating lens group 19 into nearly parallel rays 272, which are focused on the light source focusing surface 17 by the focusing lens 16.

Example 3

As shown in FIG. 5, this embodiment provides a laser illumination light source. The difference between Embodiment 3 and Embodiment 2 is that the white light excitation module 24 is arranged in the light emitting direction of the laser array 11, and the regional light splitting guide is a regional transmission total reflection. For the color plate 33, the angle between the direction of the laser array 11 and the direction of the regional transmissive color film 33 is 45°; the regional transmissive color film 33 is provided with a transmissive area for transmitting the excitation light emitted by the laser array 11 to The white light excitation module 24 reflects the light converted by the white light excitation module 24 to the focusing lens 16.

The white light wavelength conversion device 241 is used to diffusely reflect a part of the near-parallel array excitation light rays 181, and another part of the near-parallel array excitation light rays 181 are converted into laser light rays; the diffuse reflection light and the laser light rays are mixed into white light rays.

In this embodiment, the white light rays are collimated by the first collimating lens group 19 into nearly parallel rays 272, which are focused on the light source focusing surface 17 by the focusing lens 16.

Example 4

As shown in FIG. 6, this embodiment provides a laser illumination light source. The difference between Embodiment 4 and Embodiment 2 is that the specific structure of the excited module is different, so that the excitation light emitted by the laser array 11 is transmitted to the wavelength conversion device The light path is different. Specifically: the excited module is a plurality of white light excited modules 24; each white light excited module 24 includes a white light wavelength conversion device 241 and a first collimating lens group 19; the white light wavelength conversion device 241 is sapphire glass or Quartz glass material structure, the surface is coated with anti-yellow transparent blue film (360-480nm wavelength light transmission, 480-800nm wavelength light total reflection), the surface of the anti-yellow transparent blue film is equipped with diffuse reflection material and powder phosphor powder (oxidized Titanium or aluminum oxide powder) mixed material layer, diffuse reflection material layer as the optical path adjustment device, and powder phosphor powder layer as the wavelength conversion device; the first collimating lens group 19 is the optical path adjustment device and is used for collimating light; The excitation light rays emitted by the laser array 11 directly irradiate the white light wavelength conversion device 241; the white light wavelength conversion device 241 is used to diffusely reflect a part of the near-parallel array excitation light rays 181, and another part of the near-parallel array excitation light rays 181 are converted into laser light rays .

In this embodiment, the diffusely reflected light and the received laser light are collimated by the first collimating lens group 19 and then mixed into nearly parallel light 272, that is, white light light; then, the white light light is focused on the light source focusing surface 17 by the focusing lens 16.

Obviously, the above-mentioned embodiments of the present invention are merely examples to clearly illustrate the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (12)

1. A laser illumination light source, characterized in that it includes a laser array (11), an excited module and a focusing lens (16); the laser array (11) includes a plurality of lasers arranged in an array and is used to emit multiple excitation light rays The excited module includes a wavelength conversion device used to form a plurality of excited points and used to convert the multiple excitation light rays emitted by the laser array into the laser light, and used to convert the multiple excitation light rays and the laser light rays The optical path adjustment device guided to the focusing lens; the focusing lens (16) is used to focus the received multiple laser beams on the light source focusing surface (17).
2. The laser illumination source according to claim 1, characterized in that, each beam of excitation light emitted by the laser array (11) is arranged corresponding to an excited point of the excited module; or the laser array (11) emits Each excitation light ray is set corresponding to multiple excitation points of the excited module; or part of the multiple excitation light rays emitted by the laser array (11) is set corresponding to an excitation point of the excited module.
3. The laser illumination light source according to claim 1, characterized in that there are multiple excited modules, and each excited module includes a blue light excited module (15) and a yellow light excited module (14). ); each blue light excitation module (15) includes a blue light wavelength conversion device (151) and a first collimating lens group (19), each yellow light excitation module (14) includes a yellow light wavelength conversion device (141) and the first collimating lens group (19), the first collimating lens group (19) is an optical path adjustment device and used for collimating light; between the laser array (11) and the yellow light excitation module (14) Equipped with a dichroic color film (13) as a light path adjusting device for splitting the purple excitation light rays emitted by the laser array (11), so that a part of the purple excitation light rays are converged by the first collimating lens group (19) The yellow light wavelength conversion device (141) is converted into yellow light, and another part of the purple excitation light is condensed into the blue light wavelength conversion device (151) through the first collimating lens group (19) to be converted into blue light; The color splitter (13) is also used to combine the nearly parallel yellow light (182) and the nearly parallel blue light (183) collimated by the first collimating lens group (19) into white light.
4. The laser illumination light source according to claim 1, characterized in that there are multiple excited modules, and each excited module includes a blue reflection module (20) and a yellow light excitation module (14) Each blue reflection module (20) is a light path adjustment device and includes a Lambertian scattering device (201) and a first collimating lens group (19), and each yellow light excitation module (14) includes yellow The light wavelength conversion device (141) and the first collimating lens group (19), the first collimating lens group (19) is an optical path adjustment device and used for collimating light; the laser array (11) and the yellow light excitation module ( 14) A dichroic color film (13) as a light path adjustment device is installed between 14), which is used to split the blue excitation light emitted by the laser array (11) so that a part of the blue excitation light passes through the first collimator The lens group (19) converges on the yellow light wavelength conversion device (141) to convert into yellow light, so that another part of the blue excitation light is converged on the Lambertian scattering device (201) through the first collimating lens group (19) Reflects blue light; the dichroic color film (13) is also used to combine the nearly parallel yellow light (182) and the nearly parallel blue light (183) collimated by the first collimating lens group (19) into light White light rays.
5. The laser illumination source according to claim 3, characterized in that the blue excitation module (15) is arranged in the direction of the laser array (11), and the yellow light excitation module (14) is arranged in the laser array (11). ) In the vertical direction of the light, the angle between the direction of the laser array (11) and the direction of the dichroic color plate (13) is 45°; the yellow light wavelength conversion device (141) is a structure of highly reflective material coated with a phosphor powder layer .
6. The laser illumination source according to claim 4, characterized in that the blue reflection module (20) is arranged in the direction of the laser array (11), and the yellow light excitation module (14) is arranged in the laser array (11) In the vertical direction of the light, the angle between the direction of the laser array (11) and the direction of the dichroic color film (13) is 45°; the yellow light wavelength conversion device (141) is a structure of a highly reflective material coated with a phosphor powder layer. The Lambertian scattering device (201) is a Gaussian diffuse reflection material structure.
7. The laser illumination light source according to claim 1, characterized in that the excited module is a plurality of white light excited modules (24); each white light excited module (24) includes a white light wavelength conversion device ( 241) and the first collimating lens group (19). The surface of the white light wavelength conversion device (241) is provided with a mixed material layer of diffuse reflection material and powder phosphor powder. The diffuse reflection material layer serves as the optical path adjustment device. The body layer is used as a wavelength conversion device, and the first collimating lens group (19) is an optical path adjustment device and used to collimate light; an area serving as an optical path adjustment device is provided between the laser array (11) and the white light excitation module (24) The light splitting guide is used to guide the excitation light emitted by the laser array (11) to converge on the white light wavelength conversion device (241) through the first collimating lens group (19); the white light wavelength conversion device (241) is used to excite part of the The light rays are diffusely reflected, and the other part of the excitation light rays are converted into laser light rays; the diffuse reflection light and the laser light rays are mixed into white light rays, collimated by the first collimating lens group (19), and then focused on the light source by the focusing lens (16) Surface (17).
8. The laser illumination light source according to claim 7, characterized in that the white light excitation module (24) is arranged in the vertical direction of the laser array (11), and the regional light splitting guide is a regional light splitting color plate (23). The angle between the direction of the array (11) and the direction of the regional color splitter (23) is 45°; the regional color splitter (23) is used to reflect the excitation light emitted by the laser array (11) to the white light excitation module ( 24) and transmit the light converted by the white light excitation module (24) to the focusing lens (16).
9. The laser illuminating light source according to claim 7, characterized in that the white light excitation module (24) is arranged in the light emitting direction of the laser array (11), and the regional light splitting guide is a regional transmission total reflection color film (33), The angle between the direction of the laser array (11) and the direction of the regional transmissive color film (33) is 45°; the regional transmissive color film (33) is provided with a transmissive area for exciting the laser array (11) The light rays are transmitted to the white light excitation module (24) and reflect the light converted by the white light excitation module (24) to the focusing lens (16).
10. The laser illumination light source according to claim 1, characterized in that the excited module is a plurality of white light excited modules (24); each white light excited module (24) includes a white light wavelength conversion device ( 241) and the first collimating lens group (19). The surface of the white light wavelength conversion device (241) is provided with a mixed material layer of diffuse reflection material and powder phosphor powder. The diffuse reflection material layer serves as the optical path adjustment device. The body layer is used as a wavelength conversion device, and the first collimating lens group (19) is a light path adjustment device and is used to collimate light; the excitation light emitted by the laser array (11) directly irradiates the white light wavelength conversion device (241); the white light wavelength conversion The device (241) is used to diffusely reflect a part of the excitation light rays and convert the other part of the excitation light rays into laser light rays; the diffuse reflection light and the laser light rays are collimated by the first collimating lens group (19) and then mixed into white light rays. The focusing lens (16) focuses on the light source focusing surface (17).
11. The laser illumination light source according to claim 1, wherein a homogenizing device is provided between the laser array (11) and the wavelength conversion device; or/and a light homogenization device is provided between the wavelength conversion device and the focusing lens (16). Homogenizing device.
12. The laser illuminating light source according to claim 1, further comprising a second collimating lens group (12) arranged in one-to-one correspondence with each laser and used for collimating the excitation light rays emitted by the laser.