CN212480896U

CN212480896U - Solid-state light source light-emitting device

Info

Publication number: CN212480896U
Application number: CN202020729421.9U
Authority: CN
Inventors: 赫尔曼·友瀚·范·贝赫库姆; 郑华
Original assignee: He ErmanYouhanFanBeihekumu
Current assignee: He ErmanYouhanFanBeihekumu
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-02-05
Anticipated expiration: 2030-05-07

Abstract

The utility model provides a solid-state light source illuminator, a serial communication port, including first laser source, polarization beam splitter, wave plate, first spotlight element, first wavelength conversion equipment, dichroic mirror, third colour light emergence portion, spotlight part. The utility model provides a pair of solid-state light source illuminator has characteristics such as luminance height, optical expansion volume are little, color rendering index is high, the facula is even, long service life, efficient. The utility model discloses in can being applicable to the system that needs high illumination intensity and little optical expansion, for example amusement lighting system, projection system, automotive lighting system, medical lighting system, searchlighting lighting system, field work lighting system, navigation lighting system, portable lighting system etc..

Description

Solid-state light source light-emitting device

Technical Field

The utility model belongs to the field of lighting, especially, belong to solid state light source illumination field. The utility model provides a pair of solid-state light source illuminator is applicable in the system that needs high illumination intensity and little optical expansion volume, for example amusement lighting system, projection system, automotive lighting system, medical lighting system, searchlighting lighting system, field operation lighting system, navigation lighting system, portable lighting system etc..

Background

The laser is an ideal point light source, and has the advantages of small optical expansion, long service life, no mercury and the like. The fluorescent powder can be used as a light source to excite the fluorescent powder to generate color light or white light, and an ideal light-emitting device with smaller optical expansion can be obtained by matching with an optical element. Fig. 1 is a schematic structural diagram of a light-emitting device in the prior art. As shown in fig. 1, the conventional light emitting device includes a laser light source 10, a dichroic mirror 20, a first collimating lens group 30, a yellow phosphor sheet 40, a second collimating lens group 50, a lambertian scattering device 60, and a focusing lens 70. The laser light source 10 emits blue laser light to the dichroic mirror 20, the dichroic mirror 20 can reflect part of the blue light and transmit yellow light, the laser light source 10 emits blue light, a part of the blue light is reflected to the first collimating lens group 30 through the dichroic mirror 20, and then is converged to the yellow fluorescent powder sheet 40 through the first collimating lens group 30, the yellow fluorescent powder sheet 40 absorbs the blue light to generate yellow light, and then the yellow light is reflected to the first collimating lens group 30 by the reflection substrate at the bottom of the yellow fluorescent powder sheet 40, and then is collimated by the collimating lens group 30 and then emitted to the dichroic mirror 20, and the dichroic mirror 20 can transmit the yellow light, so that the yellow light can be emitted. Another part of the blue light emitted from the laser source 10 is transmitted through the dichroic mirror 20, and then is converged to the lambertian scattering device 60 through the second collimating lens group 50, the lambertian scattering device 60 can reflect the blue light, and the reflected blue light satisfies lambertian distribution, the blue light is collimated by the second collimating lens group 50 and then is emitted to the dichroic mirror 20, wherein part of the blue light is reflected by the dichroic mirror 20, and is combined with the yellow light transmitted from the dichroic mirror 20 to form white light, and finally the white light is focused by the focusing lens 70 and then is emitted.

In the solution shown in fig. 1, when the blue light emitted by the lambertian scattering device 60 passes through the dichroic mirror 20, a part of the blue light transmits through the dichroic mirror 20 and cannot be combined with the yellow light to form white light, so that in the whole light path, a part of the blue light is lost, and thus the light emitting efficiency of the light emitting device is not high and the problem of insufficient blue light generally occurs. Meanwhile, since the yellow fluorescent material generally cannot provide enough red light, the red light output by the light emitting device is insufficient and the color rendering index of the output light is generally low.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the light emitting efficiency of the existing light emitting device is not high, the blue light is not enough, and the red light output by the existing light emitting device is not enough and the color rendering index of the output light is generally lower.

In order to solve the technical problem, the utility model provides a solid-state light source illuminator is provided, a serial communication port, including first laser source, polarization beam splitter, wave plate, first spotlight element, first wavelength conversion device, dichroic mirror, third colour light emergence portion, spotlight part.

The laser light emitted by the first laser light source includes a first color light which is S-polarized light or P-polarized light relative to the incident plane of the polarization beam splitter, and the first color light is generated by one or more first lasers inside the first laser light source. All of these first lasers may be randomly placed or placed in an array. These first lasers emit light having a central wavelength at λ₁～λ₂Which is capable of exciting the first wavelength converting device.

Defining an optical path between the polarization beam splitter and the first wavelength conversion device as a first optical path, wherein:

the polarization beam splitter makes the wavelength at lambda₁～λ₂Reflecting the light with S-polarized light relative to its incident surface to make the wavelength at lambda₁～λ₂A light ray having P-polarized light with respect to its incident surface is transmitted to make the wavelength longer than lambda₂Is transmitted or reflected. The polarizing beam splitter may be cube-type or plate-type and reflects or transmits incident light depending on its wavelength and polarization direction. The first color light beam emitted by the first laser source and including S-polarized light or P-polarized light with respect to the incident plane of the polarization beam splitter is emitted to the polarization beam splitter, and the polarization beam splitter can reflect the S-polarized light within a certain wavelength range and transmit the P-polarized light within a certain wavelength range.

In particular, when the polarization splitter makes the wavelength longer than λ₂When visible light rays are transmitted:

the first laser source emits a first color light including S-polarized light relative to the incident plane of the polarization beam splitter, and the central wavelength of the first color light is λ₁～λ₂And it can excite the first wavelength conversion device, and the first color light emitted by the first laser source can be projected to the polarization beam splitter.

The polarization beam splitter will be S-polarized light with respect to its incident surface and have a wavelength at λ₁～λ₂The first color light rays in between are reflected into the first light path.

The first light-gathering element is located on the first light path, and is used for gathering the first color light reflected into the first light path from the polarization splitter to the first wavelength conversion device, and simultaneously, for collimating the light reflected into the first light path from the first wavelength conversion device and then emitting the light to the polarization splitter along the first light path.

The first wavelength conversion device is reflective, the first wavelength conversion device absorbs a part of the first color light reflected into the first optical path from the polarization splitter, and then is excited to generate second color light, the central wavelength of the second color light is longer than that of the first color light, and the second color light and the first color light which is not absorbed by the first wavelength conversion device emit from the first wavelength conversion device to the polarization splitter along the first optical path.

The wave plate is located on the first optical path and is used for enabling the polarization direction of the first color light which reaches the polarization beam splitter from the first wavelength conversion device along the first optical path and is not absorbed by the first wavelength conversion device to be different from the polarization direction of the first color light reflected into the first optical path from the polarization beam splitter.

The light from the first wavelength conversion device reaching the polarization beam splitter along the first optical path is transmitted by the polarization beam splitter and then emitted to the dichroic mirror.

A third color light generating part for emitting collimated third color light with at least part of wavelength longer than or equal to λ₃And lambda₃＞λ₂These third color rays are directed towards the dichroic mirror.

The dichroic mirror may reflect light having a wavelength longer than or equal to λ₃Of light having a transmission wavelength shorter than lambda₃Of light or transmitted wavelength longer than or equal to λ₃Of light rays having a reflection wavelength shorter than lambda₃Of the light source.

When the dichroic mirror reflection wavelength is longer than or equal to λ₃Of light having a transmission wavelength shorter than lambda₃During the light, at least partial light of self-polarizing beam splitter directive dichroic mirror combines into light of the same way after the transmission of dichroic mirror and at least partial third color light of third color light emergence department directive dichroic mirror reflect through dichroic mirror, and light jets out from illuminator after spotlight part convergence.

When the transmission wavelength of the dichroic mirror is longer than or equal to lambda₃Of light rays having a reflection wavelength shorter than lambda₃During the light, at least partial light of self-polarizing beam splitter directive dichroic mirror is through dichroic mirror reflection and from at least partial third color light of third color light emergence portion directive dichroic mirror to merge into light of the same way after dichroic mirror transmission, and light jets out from illuminator after spotlight part convergence.

When polarized light is splitThe wavelength of the device is longer than lambda₂When visible light rays are reflected:

the first laser source emits a first color light beam containing P polarized light relative to the incident plane of the polarization beam splitter, and the central wavelength of the first color light beam is lambda₁～λ₂And it can excite the first wavelength conversion device, and the first color light emitted by the first laser source can be projected to the polarization beam splitter.

The polarization beam splitter will be P-polarized with respect to its incident plane and have a wavelength at λ₁～λ₂The first color light is transmitted into the first optical path.

The first light-gathering element is located on the first light path, and is used for gathering the first color light transmitted into the first light path from the polarization splitter to the first wavelength conversion device, and simultaneously, for collimating the light reflected into the first light path from the first wavelength conversion device and then emitting the light to the polarization splitter along the first light path.

The first wavelength conversion device is reflective, the first wavelength conversion device absorbs the first color light transmitted into the first optical path from the polarization splitter, the first color light is excited to generate second color light, the central wavelength of the second color light is longer than that of the first color light, and the second color light and the first color light which is not absorbed by the first wavelength conversion device emit from the first wavelength conversion device to the polarization splitter along the first optical path.

The wave plate is located on the first optical path and is used for enabling the polarization direction of the first color light which reaches the polarization beam splitter from the first wavelength conversion device along the first optical path and is not absorbed by the first wavelength conversion device to be different from the polarization direction of the first color light which is transmitted into the first optical path from the polarization beam splitter.

The light beam from the first wavelength conversion device and reaching the polarization beam splitter along the first optical path is reflected by the polarization beam splitter and then emitted to the dichroic mirror.

The dichroic mirror may beThe reflection wavelength is longer than or equal to lambda₃Of light having a transmission wavelength shorter than lambda₃Of light or transmitted wavelength longer than or equal to λ₃Of light rays having a reflection wavelength shorter than lambda₃Of the light source.

When the dichroic mirror reflection wavelength is longer than or equal to λ₃Of light having a transmission wavelength shorter than lambda₃When the light rays are emitted, the light rays emitted to the dichroic mirror from the self-polarizing beam splitter are transmitted through the dichroic mirror and are combined into one path of light rays after being reflected by the dichroic mirror from the third color light ray generating part, and the light rays are emitted from the light emitting device after being converged by the light condensing part.

One conventional structure of the first wavelength converting device hereinbefore comprises a reflective substrate and a wavelength converting material disposed on the reflective substrate. In the present invention, the first wavelength conversion device may be static or dynamic (e.g., a fluorescent wheel).

Preferably, the first laser light source includes a first laser and a first collimating element therein:

the light emitted by the first laser is linearly polarized light;

the first collimating element may be integrated inside the first laser, and when the first collimating element is not integrated inside the adopted first laser, a first collimating element (e.g., a collimating lens) may also be added outside the first laser, and the first collimating element is used for collimating light.

Preferably, the first laser light source further includes a first lens group for reducing a beam, all light generated by the first laser enters the first lens group, and the first color light transmitted from the first lens group is the first color light emitted by the first laser light source.

In addition to the first laser, the first lens group, and the first collimating element, the first laser source may also include other optical elements (such as a mirror) inside the first laser source, which can be used to collect the light emitted from the first laser and direct the light to the polarization beam splitter.

Preferably, the first light-concentrating element is constituted by at least one optical element having collimating properties, such as a lens or a compound parabolic concentrator or a tapered light guide, or by any combination between the above-mentioned optical elements.

Preferably, the light-gathering component is composed of at least one lens, and is used for converging and emitting the originally parallel or divergent light rays.

Preferably, the third color light generating part includes a solid-state light source and a second collimating element, wherein:

the solid-state light source emits a third color light, at least a part of the third color light has a wavelength longer than or equal to λ₃And lambda₃＞λ₂The third color light rays enter the second collimating element;

the second collimating element is used for collimating the third color light emitted from the solid light source and then emitting the third color light to the dichroic mirror.

Preferably, the solid-state light source is an LED or a laser.

Preferably, the second collimating element is constituted by at least one optical element having collimating properties, such as a lens or a compound parabolic concentrator or a tapered light guide, or by any combination between the above mentioned optical elements.

Preferably, a first light uniformizing device is disposed between the first laser light source and the polarization beam splitter, and is configured to uniformize the first color light emitted from the first laser light source. The first light homogenizing device can be a diffusion sheet, a compound eye lens group, a light guide column or other optical elements with a light homogenizing function, and can homogenize laser light spots converged on the first wavelength conversion device, so that the wavelength conversion material is not easily burnt by laser light and the efficiency of the wavelength conversion material can be improved.

Preferably, a first light guide pillar is disposed between the first light gathering element and the first wavelength conversion device, and is used for uniformly distributing the first color light emitted from the polarization beam splitter to the first wavelength conversion device.

Preferably, the third color light generating unit includes a second laser light source, a second condensing element, and a second wavelength conversion device, and an optical path between the dichroic mirror and the second wavelength conversion device is defined as a second optical path, and the third color light generating unit includes:

the second laser source emits a central wavelength shorter than lambda₃The second laser light source emits light rays which are emitted to the dichroic mirror and enter a second light path after being transmitted or reflected by the dichroic mirror;

the second light-condensing element is positioned on the second light path and is used for condensing the light rays transmitted or reflected by the dichroic mirror and entering the second light path to the second wavelength conversion device and collimating the light rays reflected from the second wavelength conversion device and entering the second light path and then emitting the light rays to the dichroic mirror along the second light path;

the second wavelength conversion means being reflective, the second wavelength conversion means absorbing central wavelengths shorter than λ transmitted from or reflected into the second optical path by said dichroic mirror₃After the light is emitted, a third color light is generated by excitation, and the wavelength of at least part of the third color light is longer than or equal to lambda₃And lambda₃＞λ₂The third color light is emitted from the second wavelength conversion device to the dichroic mirror along the second optical path. One conventional structure of a second wavelength conversion device includes a reflective substrate and a wavelength conversion material disposed on the reflective substrate. In the present invention, the second wavelength conversion device may be static or dynamic (e.g., a fluorescent wheel).

Preferably, the second laser light source includes a second laser and a third collimating element therein. The third collimating element may be integrated inside the second laser, and when the third collimating element is not integrated inside the second laser, a third collimating element (e.g., a collimating lens) may also be added outside the second laser, and the third collimating element is used for collimating light.

Preferably, the second laser light source further comprises a second lens group for reducing the beam, all the light generated by the second laser is incident on the second lens group, and the light transmitted from the second lens group is the light emitted by the second laser light source.

Preferably, a first light uniformizing device is disposed between the first laser light source and the polarization beam splitter, and is configured to uniformize the first color light emitted from the first laser light source.

Preferably, a second light homogenizing device is arranged between the second laser light source and the dichroic mirror and used for homogenizing the light emitted from the second laser light source. The second light homogenizing device can be a diffusion sheet, a compound eye lens group, a light guide column or other optical elements with the light homogenizing function, and can homogenize laser light spots converged on the second wavelength conversion device, so that the wavelength conversion material is not easily burnt by laser light and the efficiency of the wavelength conversion material can be improved.

Preferably, a second light guide pillar is disposed between the second light concentrating element and the second wavelength conversion device, and is used for uniformly distributing the light emitted from the dichroic mirror to the second wavelength conversion device.

Preferably, a second light homogenizing device is arranged between the second laser light source and the dichroic mirror and used for homogenizing the light emitted from the second laser light source.

Preferably, the second light concentrating element is constituted by at least one optical element having collimating properties, such as a lens or a compound parabolic concentrator or a tapered light guide, or by any combination between the above mentioned optical elements.

For reference and clarity, the terms used in the present invention are described as follows:

wavelength conversion material: the wavelength conversion material may be a phosphorescent material or a fluorescent material. Such as phosphors, fluorescent ceramics, luminescent crystals, scintillation crystals, and the like.

Excitation light: the wavelength converting material can be excited such that the wavelength converting material produces light of a longer wavelength.

Receiving laser: the wavelength conversion material is excited by the excitation light to generate light.

Based on the above description to technical noun, the utility model discloses a theory of operation and working process are:

the utility model discloses an use polarization beam splitter, the first colored light that includes for polarization beam splitter' S incident plane to the first laser source send makes it penetrate into first light path through reflection or transmissive mode for S polarized light or P polarized light. The polarization beam splitter reflects S-polarized light in a certain wavelength range and transmits P-polarized light in a certain wavelength range. In the first light path, the first color light is converged on the first wavelength conversion device through the first light condensation element, the first color light excites the wavelength conversion material on the first wavelength conversion device to enable the wavelength conversion material to emit second color light, the second color light and the first color light which is not absorbed by the first wavelength conversion device are emitted back to the first light path from the first wavelength conversion device and return to the polarization beam splitter after being collimated by the first light condensation element, the first light path is internally provided with a wave plate, and in the process, the first color light which is not absorbed by the first wavelength conversion device passes through the wave plate twice, so that the polarization direction of the first color light is changed. The light of the first light path is transmitted or reflected by the polarization beam splitter and then emitted to the dichroic mirror. The dichroic mirror may reflect light having a wavelength longer than or equal to its designed cut-off wavelength, transmit light having a wavelength shorter than its designed cut-off wavelength, or transmit light having a wavelength longer than or equal to its designed starting wavelength, reflect light having a wavelength shorter than its designed starting wavelength. Then, according to the difference of the specific implementation structure of the third color light generating part, the following two cases are divided:

first case)

The light emitted from the first light path is transmitted or reflected through the dichroic mirror and combined with the light emitted by the solid-state light source and reflected or transmitted by the dichroic mirror into one path of light, and finally all the light is emitted after being converged by the light-condensing part.

Second case)

And light rays emitted by the second laser light source enter the second light path after being transmitted or reflected by the dichroic mirror. In the second light path, the exciting light excites the wavelength conversion material on the second wavelength conversion device to make the wavelength conversion material emit excited light, the excited light is third color light, and the third color light is emitted back to the second light path from the second wavelength conversion device and returns to the dichroic mirror after being collimated by the second light-condensing element. And finally, the light rays emitted to the dichroic mirror from the polarization splitter are transmitted or reflected by the dichroic mirror, and the light rays emitted to the dichroic mirror from the second light-condensing element are reflected or transmitted by the dichroic mirror and then combined into one path of light rays, and the one path of light rays are converged by the light-condensing part and then emitted from the light-emitting device.

It should be noted that, neither reflection nor transmission is 100%, and reflection or transmission of more than 80% is generally within an acceptable range according to the specification of an actual component.

The light emitted by the first laser in the first laser light source may excite the wavelength converting material on the first wavelength conversion device to lase, in other words, it may be absorbed by the wavelength converting material to lase. Because the first laser is arranged in the first laser source and the light emitted by the first laser is linearly polarized light, the first laser source capable of emitting the light which is S polarized light or P polarized light relative to the incident plane of the polarization beam splitter can be obtained by reasonably placing the first laser.

Meanwhile, because the optical element inside the first laser light source can collimate the light (the optical element used here can be a collimating lens), the first laser light source which can emit nearly parallel light can be obtained.

The light from the first laser source is directed to a polarizing beam splitter, which reflects S-polarized light and transmits P-polarized light in a certain wavelength range, and reflects or transmits visible light having a wavelength longer than the longest wavelength of the wavelength range. For example, when a narrow band polarizing beamsplitter is used, it reflects S-polarized blue light with a wavelength between 440 and 470nm, transmits P-polarized blue light with a wavelength between 440 and 470nm, and transmits visible light with a wavelength longer than 470 nm. For another example, when another narrow band polarizing beam splitter is used, it reflects S-polarized blue light with a wavelength between 440 and 470nm, transmits P-polarized blue light with a wavelength between 440 and 470nm, and reflects visible light with a wavelength longer than 470 nm. Both of these narrow band polarizing beamsplitters have particular application in the latter embodiment.

The polarization beam splitter can reflect S-polarized light and transmit P-polarized light in a certain wavelength range. The light emitted by the first laser source is directed to a polarization beam splitter, wherein S-polarized light or P-polarized light in the wavelength range is incident on the first optical path.

First light path: the S polarized light or the P polarized light emitted by the first laser light source is emitted into the first optical path, and then the polarization state of the S polarized light or the P polarized light is changed by the wave plate, specifically, the S polarized light or the P polarized light is changed into circularly polarized light. For example, with the quarter-wave plate, the angle between the polarization plane of the incident linearly polarized light and the fast axis or the slow axis of the quarter-wave plate is 45 °, so that the linearly polarized light becomes circularly polarized light after passing through the quarter-wave plate. The light is converged to the first wavelength conversion device through the first light-condensing element. The first wavelength converting device is reflective and includes a reflective substrate and a wavelength converting material disposed on the reflective substrate. After a portion of the excitation light is absorbed by the wavelength conversion material on the first wavelength conversion device, the wavelength conversion material emits stimulated light with a longer wavelength. The excited light and the excitation light not absorbed by the wavelength conversion material are emitted from the first wavelength conversion device back to the first optical path. When the excitation light not absorbed by the wavelength conversion material passes through the wave plate for the second time, the circularly polarized light is changed into P polarized light or S polarized light.

The first light-gathering element collimates the light reflected from the first wavelength conversion device into nearly parallel light. In the first optical path, the excitation light (S-polarized light or P-polarized light) that is not absorbed by the wavelength conversion material passes through the wave plate twice, and the polarization direction thereof changes, specifically, from the original S-polarized light to the P-polarized light or from the original P-polarized light to the S-polarized light.

The light of the first light path is reflected or transmitted by the polarization beam splitter and then emitted to the dichroic mirror.

The dichroic mirror may reflect light having a wavelength longer than or equal to its designed cut-off wavelength, transmit light having a wavelength shorter than its designed cut-off wavelength, or transmit light having a wavelength longer than or equal to its designed starting wavelength, reflect light having its designed starting wavelength.

For the first case described above, then:

the light emitted by the solid-state light source is collimated by the second collimating element and then emitted to the dichroic mirror, the wavelength of at least part of the third color light emitted by the solid-state light source is longer than or equal to the designed cut-off wavelength or initial wavelength of the dichroic mirror, and the wavelength of at least part of the first color light and the second color light is shorter than the designed cut-off wavelength or initial wavelength of the dichroic mirror. The dichroic mirror may reflect light having a wavelength longer than or equal to its designed cut-off wavelength, transmit light having a wavelength shorter than its designed cut-off wavelength, or transmit light having a wavelength longer than or equal to its designed starting wavelength, reflect light having a wavelength shorter than its designed starting wavelength.

When the used dichroic mirror reflects light with a wavelength longer than or equal to the designed cut-off wavelength and transmits light with a wavelength shorter than the designed cut-off wavelength, at least most of the light emitted to the dichroic mirror from the self-polarizing beam splitter can be transmitted through the dichroic mirror by selecting a dichroic lens with a suitable cut-off wavelength, at least most of the light emitted to the dichroic mirror from the second collimating element is reflected by the dichroic mirror, and finally, the lights are combined into one path of light and are emitted from the light-emitting device after being converged by the light-condensing part.

When the dichroic mirror is used for transmitting light with the wavelength longer than or equal to the designed initial wavelength and reflecting light with the wavelength shorter than the designed initial wavelength, at least most of the light emitted to the dichroic mirror from the self-polarizing beam splitter can be reflected by the dichroic mirror by selecting the dichroic lens with the suitable initial wavelength, at least most of the light emitted to the dichroic mirror from the second collimating element is transmitted through the dichroic mirror, and finally the lights are combined into one path of light and emitted from the light-emitting device after being converged by the light-condensing part.

For the second case described above, then:

the second laser light source emits light rays having a center wavelength shorter than the designed cutoff wavelength or starting wavelength of the dichroic mirror, and at least most of the light rays enter the second optical path after being transmitted or reflected by the dichroic mirror.

A second optical path: the light emitted by the second laser light source is emitted into the second light path and then is converged onto the second wavelength conversion device by the second light converging element. The second wavelength converting device is reflective and includes a reflective substrate and a wavelength converting material disposed on the reflective substrate. After the excitation light is absorbed by the wavelength conversion material on the second wavelength conversion device, the wavelength conversion material can emit excited light with a longer wavelength, and the wavelength of at least part of the excited light is longer than or equal to the designed cut-off wavelength or starting wavelength of the dichroic mirror. The stimulated light is emitted from the second wavelength conversion device back to the second optical path.

The second condensing element collimates the light reflected back from the second wavelength conversion device into near-parallel light.

The dichroic mirror may reflect light having a wavelength longer than or equal to its designed cut-off wavelength, transmit light having a wavelength shorter than its designed cut-off wavelength, or transmit light having a wavelength longer than or equal to its designed starting wavelength, reflect light having a wavelength shorter than its designed starting wavelength.

When the used dichroic mirror reflects light with a wavelength longer than or equal to the designed cut-off wavelength and transmits light with a wavelength shorter than the designed cut-off wavelength, at least most of the light emitted to the dichroic mirror from the self-polarizing beam splitter can be transmitted through the dichroic mirror by selecting a dichroic lens with a suitable cut-off wavelength, at least most of the light emitted to the dichroic mirror from the second light-condensing element is reflected by the dichroic mirror, and finally, the lights are combined into one path of light and are emitted from the light-emitting device after being converged by the light-condensing element.

When the dichroic mirror is used for transmitting light with the wavelength longer than or equal to the designed initial wavelength and reflecting light with the wavelength shorter than the designed initial wavelength, at least most of the light emitted to the dichroic mirror from the self-polarizing beam splitter can be reflected by the dichroic mirror by selecting the dichroic lens with the suitable initial wavelength, at least most of the light emitted to the dichroic mirror from the second light-condensing element is transmitted through the dichroic mirror, and finally the lights are combined into one path of light and emitted from the light-emitting device after being converged by the light-condensing element.

The utility model provides a pair of solid-state light source illuminator has characteristics such as luminance height, optical expansion volume are little, color rendering index is high, the facula is even, long service life, efficient. The utility model discloses in can being applicable to the system that needs high illumination intensity and little optical expansion, for example amusement lighting system, projection system, automotive lighting system, medical lighting system, searchlighting lighting system, field work lighting system, navigation lighting system, portable lighting system etc..

Drawings

Fig. 1 is a schematic structural diagram of a light-emitting device in the prior art;

fig. 2 and fig. 3 are schematic structural diagrams of a first alternative structural form of the first laser light source in the solid-state light source lighting device disclosed in all the embodiments;

fig. 4 is a schematic structural diagram of a second alternative structural form of the first laser light source in the solid-state light source lighting device disclosed in all the embodiments;

fig. 5 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 1;

fig. 6 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 2;

fig. 7 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 3;

fig. 8 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 4;

fig. 9 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 5;

fig. 10 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 6;

fig. 11 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 7;

fig. 12 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 8;

fig. 13 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 9;

fig. 14 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 10;

fig. 15 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 11;

fig. 16 is a schematic structural view of a solid-state light source lighting device disclosed in embodiment 12.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Any of the solid-state light source lighting devices disclosed in all the following embodiments may employ the first laser light source as shown in fig. 2 and 3 or fig. 4.

Fig. 2 and 3 are schematic structural diagrams of the first laser light source of the first embodiment. As shown in fig. 2 and 3, the first laser light source includes N first lasers 1011, and light emitted by the first lasers 1011 is linearly polarized light, and the light emitting directions and the polarization directions of all the first lasers 1011 are the same. When the first laser 1011 is placed, the light emitted from the first laser light source is S-polarized light or P-polarized light with respect to the incident surface of the polarization beam splitter (fig. 2 and 3 only show the case where the light emitted from the laser light source is S-polarized light with respect to the incident surface of the polarization beam splitter, but this structure is also applicable to the case where the light emitted from the laser light source is P-polarized light with respect to the incident surface of the polarization beam splitter). Therefore, the light source including the light with S-polarized light or P-polarized light relative to the incident plane of the polarization splitter of any solid-state light source lighting device in the following embodiments can be obtained by adopting the structure shown in fig. 2 and 3.

Fig. 4 is a schematic structural diagram of a first laser light source of the second embodiment. As shown in fig. 4, the first laser light source is different from the first laser light source shown in fig. 2 and 3 in that a first lens group 1013 is additionally provided. The first lens group 1013 may be used to narrow the light beam, which makes the entire apparatus smaller and more compact.

Example 1

As shown in fig. 5, a blue light (with a central wavelength of 460nm) laser and a collimating lens are disposed in the first laser source 101, wherein the light emitting directions and the polarization directions of all the lasers are the same, and when the first laser source 101 is disposed, the polarization direction of the light emitted by the first laser source is S-polarized light relative to the incident plane of the polarization beam splitter 102, so that the first laser source 101 can emit nearly parallel blue light (with a central wavelength of 460nm) and emit the blue light to the polarization beam splitter 102, and the light includes S-polarized light relative to the incident plane of the polarization beam splitter 102. The polarizing beam splitter 102 is a narrow-band (440-470nm) polarizing cube beam splitter, and for blue light (with a central wavelength of 460nm), the polarizing beam splitter 102 can reflect the S-polarized light and transmit the P-polarized light, and for visible light with a wavelength longer than 470nm (such as green light), the polarizing beam splitter 102 can transmit the light. The polarization beam splitter 102 reflects the incident S-polarized light to the first optical path.

In the first path, the polarization splitter 102 reflects the S-polarized blue light (with a center wavelength of 460nm) to the wave plate 103, where the wave plate 103 is a quarter wave plate, which can change its polarization state for the blue light (with a center wavelength of 460 nm). When the S-polarized blue light enters the quarter-wave plate, the included angle between the polarization plane of the S-polarized blue light and the fast axis or the slow axis of the quarter-wave plate is 45 degrees, so that the polarization state of the S-polarized blue light is changed after the S-polarized blue light passes through the quarter-wave plate, and the S-polarized blue light is changed into circularly-polarized blue light. The circularly polarized blue light transmitted through the quarter-wave plate reaches the first condensing element 104, where the first condensing element 104 is a collimating lens group, which can converge the circularly polarized blue light to the first wavelength conversion device 105. The first wavelength converting device 105 is reflective and includes a reflective substrate and a wavelength converting material (e.g., a green phosphor patch) disposed on the reflective substrate. Part of the circularly polarized blue light is absorbed by the wavelength conversion material on the first wavelength conversion device 105 and converted into green light, the circularly polarized blue light which is not absorbed by the wavelength conversion material and the green light are emitted back to the first optical path from the first wavelength conversion device 105, the light is collimated by the first light gathering element 104 and emitted to the wave plate 103, after the circularly polarized blue light emitted back to the first optical path passes through the wave plate 103, the polarization state of the circularly polarized blue light is changed from original circularly polarized light to P polarized light, and finally, the mixed light emitted from the wave plate 103 contains the green light and the P polarized blue light, and the light is emitted to the polarization beam splitter 102. Since the polarization splitter 102 is a narrow band polarization splitter, the polarization splitter 102 can reflect the S-polarized light and transmit the P-polarized light for blue light (with a center wavelength of 460nm) and the polarization splitter 102 can transmit the green light. Both the green light and the P-polarized blue light in the mixed light may be transmitted through the polarizing beam splitter 102 and then towards the dichroic mirror 106.

The solid-state light source 107 is a red LED light source which emits red light having a center wavelength of 625nm, and the red light is collimated by the second collimating element 108 and then directed to the dichroic mirror 106. Dichroic mirror 106 is a short-wavelength-pass dichroic mirror that reflects light having a wavelength longer than or equal to 610nm and transmits light having a wavelength shorter than 610 nm. Therefore, at least most of the light rays emitted from the polarization beam splitter 102 to the dichroic mirror 106 can be transmitted through the dichroic mirror 106, at least most of the light rays emitted from the second collimating element 108 to the dichroic mirror 106 can be reflected by the dichroic mirror 106, and finally, the light rays are combined into one light ray and are converged by the light condensing part 109 to be emitted from the solid-state light source light-emitting device disclosed in the present embodiment, wherein the light condensing part 109 is a focusing lens.

Example 2

As shown in fig. 6, the present embodiment is different from embodiment 1 in that: the polarizing beam splitter 102 of the present embodiment is a flat plate instead of a cube, and is lighter than a cube, so that the entire device can be lighter. Other structures and operation of this embodiment are the same as those of embodiment 1.

Example 3

As shown in fig. 7, the present embodiment is different from embodiment 2 in that a polarizing beam splitter 102 is selected. The polarization beam splitter 102 is a narrow band (440-470nm) polarization beam splitter, and for blue light (with a central wavelength of 460nm), the polarization beam splitter 102 can reflect the S-polarized light and transmit the P-polarized light, and for visible light with a wavelength longer than 470nm (for example, green light), the polarization beam splitter 102 can reflect the light. When the laser light source 101 is placed, the polarization direction of the light emitted by the laser light source is P-polarized light with respect to the incident plane of the polarization beam splitter 102, and the polarization beam splitter 102 transmits the incident P-polarized light to the first optical path.

In the first path, the polarization splitter 102 transmits P-polarized blue light (with a center wavelength of 460nm) to a waveplate 103, here a quarter waveplate, which changes its polarization state for blue light (with a center wavelength of 460 nm). When the P-polarized blue light enters the quarter-wave plate, the included angle between the polarization plane of the P-polarized blue light and the fast axis or the slow axis of the quarter-wave plate is 45 degrees, so that the polarization state of the P-polarized blue light is changed after the P-polarized blue light passes through the quarter-wave plate, and the P-polarized blue light is changed into circularly polarized blue light. These circularly polarized blue light transmitted through the quarter-wave plate reaches the first condensing element 104. The first condensing element 104 is a collimating lens group, which can condense the circularly polarized blue light to the first wavelength conversion device 105. The first wavelength converting device 105 is reflective and includes a reflective substrate and a wavelength converting material (e.g., a green phosphor patch) disposed on the reflective substrate. Part of the circularly polarized blue light is absorbed by the wavelength conversion material on the first wavelength conversion device 105 and converted into green light, the circularly polarized blue light which is not absorbed by the wavelength conversion material and the green light are emitted back to the first optical path from the first wavelength conversion device 105, the light is collimated by the first light gathering element 104 and emitted to the wave plate 103, after the circularly polarized blue light emitted back to the first optical path passes through the wave plate 103, the polarization state of the circularly polarized blue light is changed from original circularly polarized light to S polarized light, and finally, the mixed light emitted from the wave plate 103 contains the green light and the S polarized blue light, and the light is emitted to the polarization beam splitter 102. Since the polarization splitter 102 is a narrow band polarization splitter, the polarization splitter 102 can reflect the S-polarized light and transmit the P-polarized light for blue light (with a center wavelength of 460nm) and the polarization splitter 102 can reflect the green light. Both the green light and the S-polarized blue light in the mixed light are reflected by the polarization splitter 102 and then directed to the dichroic mirror 106.

Example 4

As shown in fig. 8, the present embodiment is different from embodiment 2 in that: the dichroic mirror 106 used is a long-wavelength-pass dichroic mirror, not a short-wavelength-pass dichroic mirror, which can transmit light having a wavelength longer than or equal to 610nm and reflect light having a wavelength shorter than 610 nm. Therefore, at least most of the light rays emitted from the polarization beam splitter 102 to the dichroic mirror 106 can be reflected by the dichroic mirror 106, at least most of the light rays emitted from the second collimating element 108 to the dichroic mirror 106 can be transmitted through the dichroic mirror 106, and finally, the light rays are combined into one light ray and are converged by the light condensing part 109 and then emitted from the solid-state light source lighting device disclosed in the present embodiment, wherein the light condensing part 109 is a focusing lens.

Example 5

As shown in fig. 9, the present embodiment is different from embodiment 2 in that: a first dodging device 110 is disposed between the first laser light source 101 and the polarization beam splitter 102. The first light uniformizing device 110 is a diffusion sheet, and can be used to uniformize the light emitted from the first laser light source 101, so as to uniformize the laser spots converged on the first wavelength conversion device 105, thereby making the wavelength conversion material less prone to be burned out by the laser light and improving the efficiency of the wavelength conversion material.

Example 6

As shown in fig. 10, the present embodiment is different from embodiment 2 in that: a first light guide column 111 is disposed between the first light-gathering element 104 and the first wavelength conversion device 105, and can be used to homogenize the light emitted from the polarization beam splitter 102 to the first wavelength conversion device 105, so as to homogenize the laser spots converged on the first wavelength conversion device 105, thereby making the wavelength conversion material less prone to be burned out by the laser light and improving the efficiency of the wavelength conversion material.

Example 7

As shown in fig. 11, a blue light (with a central wavelength of 460nm) first laser and a collimating lens are disposed in the first laser source 101, wherein the light emitting direction and the polarization direction of all the first lasers are the same, and when the first laser source 101 is disposed, the polarization direction of the light emitted by the first laser source 101 is S-polarized light relative to the incident plane of the polarization beam splitter 102, so that the first laser source 101 can emit nearly parallel blue light (with a central wavelength of 460nm) and emit the blue light to the polarization beam splitter 102, and the light includes S-polarized light relative to the incident plane of the polarization beam splitter 102. The polarizing beam splitter 102 is a narrow-band (440-470nm) polarizing cube beam splitter, and for blue light (with a central wavelength of 460nm), the polarizing beam splitter 102 can reflect the S-polarized light and transmit the P-polarized light, and for visible light with a wavelength longer than 470nm (such as green light), the polarizing beam splitter 102 can transmit the light. The polarization beam splitter 102 reflects the incident S-polarized light to the first optical path.

A blue light (with a center wavelength of 460nm) second laser and a collimating lens are disposed in the second laser light source 112, and the second laser and the collimating lens can emit nearly parallel blue light (with a center wavelength of 460nm) and emit the blue light to the dichroic mirror 106. Dichroic mirror 106 is a short-wavelength-pass dichroic mirror that reflects light having a wavelength longer than or equal to 610nm and transmits light having a wavelength shorter than 610 nm. Therefore, the dichroic mirror 106 can transmit the blue light (having a center wavelength of 460nm) emitted from the second laser light source 112 into the second optical path.

In the second optical path, the dichroic mirror 106 can transmit the blue light (with a central wavelength of 460nm) emitted from the second laser light source 112 to the second focusing element 113, where the second focusing element 113 is selected as a collimating lens group, and the second focusing element 113 focuses the blue light (with a central wavelength of 460nm) to the second wavelength conversion device 114. The second wavelength converting device 114 is reflective and includes a reflective substrate and a wavelength converting material (e.g., a red phosphor patch) disposed on the reflective substrate. The blue light is totally absorbed by the red phosphor patch and converted to red light (with a center wavelength of 625nm) and emitted from the second wavelength conversion device 114 back to the second condensing element 113. The red light emitted from the second wavelength conversion device 114 is collimated by the second light-condensing element 113 and then emitted to the dichroic mirror 106.

Dichroic mirror 106 is a short-wavelength-pass dichroic mirror that reflects light having a wavelength longer than or equal to 610nm and transmits light having a wavelength shorter than 610 nm. Therefore, at least most of the light rays emitted from the polarization beam splitter 102 to the dichroic mirror 106 can be transmitted through the dichroic mirror 106, at least most of the light rays emitted from the second light-condensing element 113 to the dichroic mirror 106 can be reflected by the dichroic mirror 106, and finally, the light rays are combined into one light ray and are converged by the light-condensing part 109 to be emitted from the solid-state light source light-emitting device disclosed in the present embodiment, wherein the light-condensing part 109 is a focusing lens.

Example 8

As shown in fig. 12, the present embodiment is different from embodiment 7 in that: the polarizing beam splitter 102 of the present embodiment is a flat plate instead of a cube, and is lighter than a cube, so that the entire device can be lighter. The other structures and operation of this embodiment are the same as those of embodiment 7.

Example 9

As shown in fig. 13, the present embodiment is different from embodiment 8 in that a polarizing beam splitter 102 is selected. The polarization beam splitter 102 is a narrow band (440-470nm) polarization beam splitter, and for blue light (with a central wavelength of 460nm), the polarization beam splitter 102 can reflect the S-polarized light and transmit the P-polarized light, and for visible light with a wavelength longer than 470nm (for example, green light), the polarization beam splitter 102 can reflect the light. When the laser light source 101 is placed, the polarization direction of the light emitted by the laser light source is P-polarized light with respect to the incident plane of the polarization beam splitter 102, and the polarization beam splitter 102 transmits the incident P-polarized light to the first optical path.

In the first path, the polarization splitter 102 transmits P-polarized blue light (with a center wavelength of 460nm) to a waveplate 103, here a quarter waveplate, which changes its polarization state for blue light (with a center wavelength of 460 nm). When the P-polarized blue light enters the quarter-wave plate, the included angle between the polarization plane of the P-polarized blue light and the fast axis or the slow axis of the quarter-wave plate is 45 degrees, so that the polarization state of the P-polarized blue light is changed after the P-polarized blue light passes through the quarter-wave plate, and the P-polarized blue light is changed into circularly polarized blue light. These circularly polarized blue light transmitted through the quarter-wave plate reaches the first condensing element 104. The first condensing element 104 is a collimating lens group, which can condense the circularly polarized blue light to the first wavelength conversion device 105. The first wavelength converting device 105 is reflective and includes a reflective substrate and a wavelength converting material (e.g., a green phosphor patch) disposed on the reflective substrate. Part of circularly polarized blue light is absorbed by the wavelength conversion material on the first wavelength conversion device 105 and converted into green light, the circularly polarized blue light and the green light which are not absorbed by the wavelength conversion material are emitted back to the first optical path from the first wavelength conversion device 105, the light rays are collimated by the first light gathering element 104 and emitted to the wave plate 103, after the returned circularly polarized blue light passes through the wave plate 103, the polarization state of the reflected circularly polarized blue light is changed into S polarized light from original circularly polarized light, finally, the mixed light emitted from the wave plate 103 contains the green light and the S polarized blue light, and the light rays are collimated by the first light gathering element 104 and emitted to the polarization beam splitter 102. Since the polarization splitter 102 is a narrow band polarization splitter, the polarization splitter 102 can reflect the S-polarized light and transmit the P-polarized light for blue light (with a center wavelength of 460nm) and the polarization splitter 102 can reflect the green light. Both the green light and the S-polarized blue light in the mixed light are reflected by the polarization splitter 102 and then directed to the dichroic mirror 106.

In the second optical path, the dichroic mirror 106 can transmit the blue light (with a central wavelength of 460nm) emitted from the second laser light source 112 to the second focusing element 113, where the second focusing element 113 is selected as a collimating lens group, and the second focusing element 113 focuses the blue light (with a central wavelength of 460nm) to the second wavelength conversion device 114. The second wavelength converting device 114 is reflective and includes a reflective substrate and a wavelength converting material (e.g., a red phosphor patch) disposed on the reflective substrate. The blue light is totally absorbed by the red phosphor patch and converted to red light (with a center wavelength of 625nm) and emitted from the second wavelength conversion device 114 back to the second condensing element 113. The red light reflected from the second wavelength conversion device 114 is collimated by the second light-condensing element 113 and then emitted to the dichroic mirror 106.

Example 10

As shown in fig. 14, the present embodiment is different from embodiment 8 in that: the dichroic mirror 106 used is a long-wavelength-pass dichroic mirror, not a short-wavelength-pass dichroic mirror, which can transmit light having a wavelength longer than or equal to 610nm and reflect light having a wavelength shorter than 610 nm. Therefore, blue light (having a center wavelength of 460nm) emitted from the second laser light source 112 can be reflected by the dichroic mirror 106 and then enter the second optical path. Meanwhile, since the dichroic mirror 106 used is a long-wavelength pass dichroic mirror, it can transmit light with a wavelength longer than or equal to 610nm and reflect light with a wavelength shorter than 610nm, at least most of the light emitted to the dichroic mirror 106 by the polarization beam splitter 102 can be reflected by the dichroic mirror 106, at least most of the light emitted to the dichroic mirror 106 by the second light-condensing element 113 can be transmitted through the dichroic mirror 106, and finally, the light is combined into one path of light, and is converged by the light-condensing part 109 and then emitted from the solid-state light source light-emitting device disclosed in this embodiment, and here, the light-condensing part 109 selects a focusing lens.

Example 11

As shown in fig. 15, the present embodiment is different from embodiment 8 in that: a first dodging device 110 is disposed between the first laser light source 101 and the polarization beam splitter 102. The first light uniformizing device 110 is a diffusion sheet, and can be used to uniformize the light emitted from the first laser light source 101, so as to uniformize the laser spots converged on the first wavelength conversion device 105, thereby making the wavelength conversion material less prone to be burned out by the laser light and improving the efficiency of the wavelength conversion material. A second light unifying means 115 is provided between the second laser light source 112 and the dichroic mirror 106. The second light uniformizing device 115 is a diffuser, which can be used to uniformize the light emitted from the second laser source 112 and uniformize the laser spots converged on the second wavelength conversion device 114, so that the wavelength conversion material is not easily burned by the laser light and the efficiency of the wavelength conversion material can be improved.

Example 12

As shown in fig. 16, the present embodiment is different from embodiment 8 in that: a first light guide column 111 is disposed between the first light-gathering element 104 and the first wavelength conversion device 105, and can be used to homogenize the light emitted from the polarization beam splitter 102 to the first wavelength conversion device 105, so as to homogenize the laser spots converged on the first wavelength conversion device 105, thereby making the wavelength conversion material less prone to be burned out by the laser light and improving the efficiency of the wavelength conversion material. A second light guide pillar 116 is disposed between the second light focusing element 113 and the second wavelength conversion device 114, and can be used to homogenize the light emitted from the dichroic mirror 106 to the second wavelength conversion device 114, so as to homogenize the laser spots converged on the second wavelength conversion device 114, thereby making the wavelength conversion material less prone to be burned out by the laser light and improving the efficiency of the wavelength conversion material.

Claims

1. The utility model provides a solid-state light source illuminator, its characterized in that includes first laser source, polarization beam splitter, wave plate, first spotlight component, first wavelength conversion device, dichroic mirror, third colour light emergence portion, spotlight part, defines the light path between polarization beam splitter and the first wavelength conversion device as first light path, wherein:

the polarization beam splitter makes the wavelength at lambda₁～λ₂Reflecting the light with S-polarized light relative to its incident surface to make the wavelength at lambda₁～λ₂A light ray having P-polarized light with respect to its incident surface is transmitted to make the wavelength longer than lambda₂The visible light rays of (1) are transmitted or reflected;

when the polarization beam splitter makes the wavelength longer than lambda₂When visible light rays are transmitted:

the first laser source emits a first color light including S-polarized light relative to the incident plane of the polarization beam splitter, and the central wavelength of the first color light is λ₁～λ₂The first wavelength conversion device can be excited, and the first color light emitted by the first laser light source is emitted to the polarization beam splitter;

the polarization beam splitter will be S-polarized light with respect to its incident surface and have a wavelength at λ₁～λ₂The first color light is reflected into the first light path;

the first light-gathering element is positioned on the first light path, and is used for gathering the first color light reflected into the first light path from the polarization splitter to the first wavelength conversion device, and simultaneously is used for collimating the light reflected into the first light path from the first wavelength conversion device and then transmitting the light to the polarization splitter along the first light path;

the first wavelength conversion device absorbs a part of first color light reflected into the first light path from the polarization splitter, and then the first color light is excited to generate second color light, the central wavelength of the second color light is longer than that of the first color light, and the second color light and the first color light which is not absorbed by the first wavelength conversion device emit to the polarization splitter from the first wavelength conversion device along the first light path;

the wave plate is positioned on the first optical path and used for enabling the polarization direction of the first color light which reaches the polarization beam splitter from the first wavelength conversion device along the first optical path and is not absorbed by the first wavelength conversion device to be different from the polarization direction of the first color light reflected into the first optical path from the polarization beam splitter;

the light from the first wavelength conversion device along the first light path to the polarization beam splitter is transmitted by the polarization beam splitter and then emitted to the dichroic mirror;

a third color light generating part for emitting collimated third color light with at least part of wavelength longer than or equal to λ₃And lambda₃＞λ₂These third color rays are directed towards the dichroic mirror;

the dichroic mirror may reflect light having a wavelength longer than or equal to λ₃Of light having a transmission wavelength shorter than lambda₃Of light or transmitted wavelength longer than or equal to λ₃Of light rays having a reflection wavelength shorter than lambda₃The light of (2);

when the dichroic mirror reflection wavelength is longer than or equal to λ₃Of light having a transmission wavelength shorter than lambda₃During the light rays, at least part of the light rays emitted to the dichroic mirror from the self-polarizing beam splitter are transmitted by the dichroic mirror, and at least part of the third light rays emitted to the dichroic mirror from the third light ray generating part are reflected by the dichroic mirror and then combined into one light ray, and the light rays are converged by the light condensing part and then emitted from the light emitting device;

when the transmission wavelength of the dichroic mirror is longer than or equal to lambda₃Of light rays having a reflection wavelength shorter than lambda₃During the light rays, at least part of the light rays emitted to the dichroic mirror from the self-polarizing beam splitter are reflected by the dichroic mirror, and at least part of the third light rays emitted to the dichroic mirror from the third light ray generating part are combined into one light ray after being transmitted by the dichroic mirror, and the light rays are converged by the light condensing part and then emitted from the light emitting device;

when the polarization beam splitter makes the wavelength longer than lambda₂When visible light rays are reflected:

first laser light source emitting packageA first color light having a central wavelength of λ and containing P polarized light with respect to an incident plane of the polarization beam splitter₁～λ₂The first wavelength conversion device can be excited, and the first color light emitted by the first laser light source is emitted to the polarization beam splitter;

the polarization beam splitter will be P-polarized with respect to its incident plane and have a wavelength at λ₁～λ₂The first color light rays in between are transmitted into a first light path;

the first light-gathering element is positioned on the first light path and is used for gathering the first color light transmitted into the first light path from the polarization beam splitter to the first wavelength conversion device and collimating the light reflected into the first light path from the first wavelength conversion device and then transmitting the light to the polarization beam splitter along the first light path;

the first wavelength conversion device absorbs a part of first color light transmitted into the first light path from the polarization splitter, and then the first color light is excited to generate second color light, the central wavelength of the second color light is longer than that of the first color light, and the second color light and the first color light which is not absorbed by the first wavelength conversion device emit to the polarization splitter from the first wavelength conversion device along the first light path;

the wave plate is positioned on the first optical path and used for enabling the polarization direction of the first color light which reaches the polarization beam splitter from the first wavelength conversion device along the first optical path and is not absorbed by the first wavelength conversion device to be different from the polarization direction of the first color light which is transmitted into the first optical path from the polarization beam splitter;

the light reaching the polarization beam splitter from the first wavelength conversion device along the first light path is reflected by the polarization beam splitter and then emitted to the dichroic mirror;

2. The solid state light source lighting device of claim 1 wherein the first laser light source comprises a first laser and a first collimating element:

the light emitted by the first laser is linearly polarized light;

the first collimating element is integrated in the first laser or arranged outside the first laser and used for collimating light.

3. The solid state light source lighting device of claim 2, wherein the first laser light source further comprises a first lens group for reducing a beam size of light, all light generated by the first laser is incident on the first lens group, and the first color light transmitted from the first lens group is the first color light emitted by the first laser light source.

4. A solid state light source lighting device as recited in claim 1, wherein said first light concentrating element comprises at least one optical element having collimating properties.

5. A solid state light source lighting device as claimed in claim 1 wherein said light focusing element is comprised of at least one lens.

6. The solid state light source lighting device of claim 1 wherein the third color light generating portion comprises a solid state light source and a second collimating element, wherein:

7. The solid state light source lighting device of claim 6, wherein the solid state light source is an LED or a laser.

8. A solid state light source lighting device as recited in claim 6, wherein said second collimating element comprises at least one optical element having collimating properties.

9. The solid state light source lighting device of claim 6, wherein a first light homogenizing device is disposed between the first laser light source and the polarizing beam splitter for homogenizing the first color light emitted from the first laser light source.

10. The solid state light source lighting device of claim 6, wherein a first light guide is disposed between the first light collecting element and the first wavelength conversion device for homogenizing the first color light emitted from the polarization splitter to the first wavelength conversion device.

11. A solid state light source lighting device as claimed in claim 1 wherein said third color light generating section comprises a second laser light source, a second condensing element, a second wavelength conversion device, and defines an optical path between said dichroic mirror and said second wavelength conversion device as a second optical path, comprising:

the second wavelength conversion means absorbs a central wavelength shorter than λ transmitted from or reflected from the dichroic mirror into the second optical path₃After the light is emitted, a third color light is generated by excitation, and the wavelength of at least part of the third color light is longer than or equal to lambda₃And lambda₃＞λ₂And the third color light is emitted to the dichroic mirror from the second wavelength conversion device along a second optical path.

12. The solid state light source lighting device of claim 11 wherein the second laser light source comprises a second laser and a third collimating element; the third collimating element is integrated in the second laser or arranged outside the second laser and used for collimating light.

13. The solid state light source lighting device of claim 12 further comprising a second lens group in the second laser light source for reducing beam size, wherein all light generated by the second laser is incident on the second lens group, and wherein light transmitted from the second lens group is light from the second laser light source.

14. The solid state light source lighting device of claim 11, wherein a first light homogenizing device is disposed between the first laser light source and the polarizing beam splitter for homogenizing the first color light emitted from the first laser light source.

15. A solid state light source lighting device as claimed in claim 14 wherein second light homogenizing means is provided between said second laser light source and said dichroic mirror for homogenizing light emitted from said second laser light source.

16. The solid state light source lighting device of claim 14 wherein a second light guiding rod is disposed between the second light concentrating element and the second wavelength conversion device for homogenizing light directed from the dichroic mirror to the second wavelength conversion device.

17. The solid state light source lighting device of claim 11, wherein a first light guide is disposed between the first light collecting element and the first wavelength conversion device for homogenizing the first color light emitted from the polarization splitter to the first wavelength conversion device.

18. A solid state light source lighting device as claimed in claim 17 wherein second light homogenizing means is provided between said second laser light source and said dichroic mirror for homogenizing light emitted from said second laser light source.

19. The solid state light source lighting device of claim 17 wherein a second light guiding rod is disposed between the second light concentrating element and the second wavelength conversion device for homogenizing light directed from the dichroic mirror to the second wavelength conversion device.

20. A solid state light source lighting device as recited in claim 11, wherein said second concentrating element comprises at least one optical element having collimating properties.