CN214064607U - Light source system - Google Patents
Light source system Download PDFInfo
- Publication number
- CN214064607U CN214064607U CN202022500999.XU CN202022500999U CN214064607U CN 214064607 U CN214064607 U CN 214064607U CN 202022500999 U CN202022500999 U CN 202022500999U CN 214064607 U CN214064607 U CN 214064607U
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- beam splitter
- optical system
- dichroic beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Projection Apparatus (AREA)
Abstract
The utility model provides a light source system, a serial communication port, including light source, reflecting element, dichroic beam splitter, wavelength conversion device and scattering optical system, the light of the first wave band of reflecting element permission by the light source outgoing passes through or sees through the back and incides to dichroic beam splitter, and its reflecting area can reflect the light of the first wave band that comes from dichroic beam splitter, makes these light shine back dichroic beam splitter, just so can carry out reuse to these light to improve light source system's luminous efficacy. The utility model discloses a light source system has characteristics such as luminance height, optical expansion are little, color rendering index is high, long service life, applicable in the system that needs high illumination intensity and little optical expansion, for example amusement lighting system, projection system, automobile lighting system, medical lighting system, searchlight lighting system, field operation lighting system, navigation lighting system, portable lighting system etc. especially are fit for using in amusement lighting system and projection lighting system.
Description
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 light source system is applicable in the system that needs high illumination intensity and little optics extension, for example amusement lighting system, projection system, automotive lighting system, medical lighting system, searchlight 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 material can be used as a light source to excite the fluorescent body to generate color light or white light, and an ideal light-emitting device with small optical expansion can be obtained by matching the optical element.
Fig. 1 is a schematic structural diagram of a conventional dichroic spectroscopic light source system. As shown in fig. 1, the conventional light source system includes a light source 10, a dichroic mirror 20, a first lens group 30 (including a first lens 30a and a second lens 30b), a wavelength conversion device 40 (including a reflective layer 40a and a wavelength conversion layer 40b), a second lens group 50 (including a third lens 50a and a fourth lens 50b), a reflective diffusion plate 60, and a focusing lens 70. Dichroic mirror 20 has the property of reflecting a portion of the incident blue light and transmitting the remaining blue light, while dichroic mirror 20 also transmits the incident yellow light. The blue light emitted from the light source 10 enters the dichroic mirror 20, and the dichroic mirror 20 reflects a portion of the blue light and transmits the rest of the blue light, wherein the blue light reflected by the dichroic mirror 20 is transmitted to the first lens group 30, and the blue light transmitted by the dichroic mirror 20 is transmitted to the second lens group 50. The first lens group 30 converges the blue light from the dichroic mirror 20 toward the wavelength conversion device 40, the wavelength conversion device 40 is of a reflective type and includes a reflective layer 40a and a wavelength conversion layer 40b (e.g., a yellow phosphor layer) disposed on the reflective layer 40a, the wavelength conversion device 40 converts the incident blue light into yellow light and directs the yellow light to the first lens group 30, the yellow light is collected by the first lens group 30 and directed to the dichroic mirror 20, and the dichroic mirror 20 can transmit the incident yellow light. The second lens group 50 converges the blue light from the dichroic mirror 20 toward the reflective diffusion plate 60, the reflective diffusion plate 60 reflects the incident blue light to form diffused blue light, the blue light reflected by the reflective diffusion plate 60 is emitted to the second lens group 50, and then is collected by the second lens group 50 and emitted to the dichroic mirror 20, and part of the blue light can be reflected by the dichroic mirror 20. The yellow light transmitted through the dichroic mirror 20 and the blue light reflected by the dichroic mirror 20 are combined into a mixed light, and the mixed light of the yellow light and the blue light is the white light, and finally the focusing lens 70 focuses the white light and emits the white light from the light source system.
In the scheme shown in fig. 1, the reflective diffusion plate 60 reflects the incident blue light, and then the blue light is collected by the second lens group 50 and then emitted to the dichroic mirror 20, because the dichroic mirror 20 has the characteristics of reflecting part of the incident blue light and transmitting the rest of the blue light, this may cause part of the blue light to transmit through the dichroic mirror 20 and thus not to exit from the light source system, which may result in low luminous efficiency of the whole light source system.
Disclosure of Invention
The utility model aims at: the luminous efficiency of the light source system is improved.
In order to achieve the above object, the present invention provides a light source system, which includes a light source, a reflective element, a dichroic beam splitter, a wavelength conversion device, and a scattering optical system, wherein:
the light source is used for emitting light of a first wave band;
the reflective element is located in an optical path between the light source and the dichroic beam splitter, the reflective element having a transmissive region that allows light in the first wavelength band to pass or pass therethrough and a reflective region that reflects light in the first wavelength band from the dichroic beam splitter and reflects at least a portion of the light back to the dichroic beam splitter;
the dichroic beam splitter receives light of the first wavelength band emitted from the light source and passing through or transmitted through the transmissive region of the reflective element, reflects a portion of the light of the first wavelength band and emits it from a first optical path, and transmits at least a remaining portion of the light of the first wavelength band and emits it from a second optical path;
the wavelength conversion device receives the light of the first wave band emitted from one of the first light path or the second light path, converts at least part of the light of the first wave band into light of a second wave band different from the first wave band, and leads at least part of the light of the second wave band to the dichroic beam splitter;
the scattering optical system receives the light of the first wave band emitted from the other of the first optical path or the second optical path, reflects the light and forms scattered light of the first wave band, and at least part of the scattered light of the first wave band is emitted to the dichroic beam splitter;
the dichroic beamsplitter has the following properties with respect to incident light in the first and second wavelength bands:
reflecting a part of the incident light in the first wavelength band and transmitting the rest at least part of the light in the first wavelength band;
and transmitting or reflecting the incident light of the second wavelength band.
In the above technical solution, the dichroic beam splitter is a flat plate dichroic beam splitter or a cubic dichroic beam splitter.
The wavelength conversion means may be static or dynamic:
the static wavelength conversion device comprises a wavelength conversion layer and a reflective layer, wherein the wavelength conversion layer converts at least part of incident light of a first wavelength band into light of a second wavelength band.
The dynamic wavelength conversion device is a rotatable fluorescent wheel comprising at least one fluorescent zone that converts at least part of incident light of a first wavelength band into light of a second wavelength band.
It should be noted that: when the fluorescent wheel has two or more fluorescent regions, each fluorescent region may emit the excited light of different wavelength bands after being excited by the incident light of the first wavelength band, that is, each fluorescent region may convert the incident light of the first wavelength band into light of different wavelength bands, and at this time, the combined light of the excited light of different wavelength bands should be regarded as the light of the second wavelength band.
Preferably, the light source includes N lasers and N collimating elements corresponding to the N lasers one to one, where N is greater than or equal to 1, where:
the laser is used for emitting light in the first wave band;
the collimation element is integrated in the laser or arranged outside the laser and is used for collimating the light of the first wave band emitted by the laser.
In the above technical solution, the collimating element may be integrated inside the laser, and when the collimating element is not integrated inside the adopted laser, a collimating element (for example, a collimating lens) may also be added outside the laser to collimate the light emitted by the laser.
Besides the laser and the collimating element indicated in the above technical solutions, the light source may also include other optical elements (e.g. a mirror) inside, and these optical elements may be used to collect the light emitted from the laser and finally form the light of the first wavelength band emitted from the light source.
Preferably, the light source further comprises a polarization selection element, and the polarization selection element has the characteristics of reflecting S-polarized light and transmitting P-polarized light; at least one laser in the light source is used for emitting S-polarized light of the first wave band to form a first incident light, and the rest lasers in the light source are used for emitting P-polarized light of the first wave band to form a second incident light; the first incident light and the second incident light are combined into one path of light by the polarization selection element and then emitted, and the light of the first wave band emitted by the light source is formed.
Preferably, the reflective element is planar or non-planar.
Preferably, the transmission region of the reflection element is a light hole or a light transmission structure made of a light transmission material.
Preferably, the reflective element is a transmissive diffuser plate with a reflective film plated on a partial region, wherein a region of the transmissive diffuser plate not plated with the reflective film is the transmissive region, and a region of the transmissive diffuser plate plated with the reflective film is the reflective region.
Preferably, the scattering optical system is constituted by a reflective scattering plate, or by a transmissive scattering plate and a mirror.
In the above technical solution, the reflective diffusion plate may be a static reflective diffusion plate or a dynamic rotatable reflective diffusion plate.
Preferably, the optical system further comprises a light guide optical system, located on a light path from the light source to the dichroic beam splitter, for guiding at least part of the light in the first wavelength band emitted from the light source to enter the dichroic beam splitter through or transmitted through the transmissive region of the reflective element.
Preferably, the light guiding optical system is partially or entirely located at the transmissive region of the reflective element.
Preferably, the light guide optical system consists of N1A lens, N2A compound parabolic concentrator and/or N3At least one optical element in each light guide column, N1≥1，N2≥1，N3≥1。
In the above technical solution, the light guide optical system may be composed of a lens, a compound parabolic condenser, or a light guide column alone, or may be composed of any combination of the above mentioned optical elements. The number of the lenses, the compound parabolic condenser and the light guide column is determined according to the requirement, and the number of the lenses, the compound parabolic condenser and the light guide column can be 1, or 2 or more than 2.
Preferably, the end face of the light guide pole is planar or non-planar.
In the above technical scheme, the light guide column can be solid or hollow.
Preferably, the optical system further comprises a light uniformizing optical system, which is located on an optical path from the light source to the dichroic beam splitter, for uniformizing the light of the first wavelength band emitted from the light source.
Preferably, the dodging optical system is partially or completely located at the transmissive region of the reflective element.
Preferably, the dodging optical system is composed of a diffusion sheet, an optical integrating rod or at least one fly eye lens array.
In the above technical solution, the optical integrator rod may be solid or hollow.
Preferably, the wavelength conversion device further includes a first collecting optical system, which is located on an optical path between the dichroic beam splitter and the wavelength conversion device, for converging the light of the first wavelength band from the dichroic beam splitter toward the wavelength conversion device, and for collecting and directing the light from the wavelength conversion device toward the dichroic beam splitter.
In the above technical solution, the first collection optical system may be composed of a lens, a lens group, a compound parabolic concentrator or a tapered light guide column, and may also be composed of any combination of the above mentioned optical elements.
Preferably, the wavelength conversion device further comprises a first light homogenizing rod which is located on an optical path between the first collection optical system and the wavelength conversion device and is used for homogenizing the light of the first wavelength band emitted to the wavelength conversion device from the dichroic beam splitter.
In the above technical solution, the first light homogenizing rod may be solid or hollow.
Preferably, a second collection optical system is further included, which is located on an optical path between the dichroic beam splitter and the scattering optical system, and is configured to converge the light of the first wavelength band from the dichroic beam splitter toward the scattering optical system, and to collect and direct the light of the first wavelength band from the scattering optical system toward the dichroic beam splitter.
In the above technical solution, the second collection optical system may be composed of a lens, a lens group, a compound parabolic concentrator or a tapered light guide column, and may also be composed of any combination of the above mentioned optical elements.
Preferably, the optical system further comprises a second light homogenizing rod which is located on an optical path between the second collecting optical system and the scattering optical system and is used for homogenizing the light of the first wave band emitted to the scattering optical system from the dichroic beam splitter.
In the above technical solution, the second light homogenizing rod may be solid or hollow.
Preferably, the dichroic beam splitter further includes a condensing optical system for condensing light emitted from the dichroic beam splitter on a focal plane of the condensing optical system.
In the above-described embodiments, the light collection optical system may be configured by one or more lenses.
Preferably, the dichroic beam splitter further comprises a wave plate located in the optical path from the light source to the dichroic beam splitter.
In the above technical solution, the wave plate may change a polarization state of the light of the first wavelength band emitted from the light source, and the dichroic beam splitter may have different reflectance ratios for incident light with different polarization states, so that the dichroic beam splitter may realize different reflectance ratios for the incident light of the first wavelength band emitted from the light source by using the wave plate.
One skilled in the art may also provide a heat sink for dissipating heat from the light source and/or the wavelength conversion device as desired.
The present invention is directed to a dichroic beam splitter, in which a transmission region of a reflection element allows light of a first wavelength band emitted from a light source to pass through or to be transmitted therethrough, and the reflection region can reflect light of the first wavelength band from the dichroic beam splitter, so that the light is reflected back to the dichroic beam splitter, and thus the light can be reused, thereby improving the luminous efficiency of a light source system.
The utility model discloses a light source system has characteristics such as luminance height, optical expansion are little, color rendering index is high, long service life, applicable in the system that needs high illumination intensity and little optical expansion, for example amusement lighting system, projection system, automobile lighting system, medical lighting system, searchlight lighting system, field operation lighting system, navigation lighting system, portable lighting system etc. especially are fit for using in amusement lighting system and projection lighting system.
Drawings
FIG. 1 is a schematic diagram of a conventional dichroic split-beam light source system;
FIGS. 2 and 3 illustrate two different configurations of light sources;
FIG. 4 is a schematic structural diagram of a static wavelength conversion device;
FIGS. 5 and 6 illustrate two different structural forms of dynamic wavelength conversion devices;
fig. 7 is a schematic structural diagram of a light source system disclosed in embodiment 1;
fig. 8 is a schematic structural diagram of a light source system disclosed in embodiment 2;
fig. 9 is a schematic structural diagram of a light source system disclosed in embodiment 3;
fig. 10 is a schematic structural diagram of a light source system disclosed in embodiment 4;
fig. 11 is a schematic structural diagram of a light source system disclosed in embodiment 5;
fig. 12 is a schematic structural diagram of a light source system disclosed in embodiment 6;
fig. 13 is a schematic structural diagram of a light source system disclosed in embodiment 7;
fig. 14 is a schematic structural diagram of a light source system disclosed in embodiment 8;
fig. 15 is a schematic structural diagram of a light source system disclosed in embodiment 9;
fig. 16 is a schematic structural diagram of a light source system disclosed in embodiment 10;
fig. 17 is a schematic structural diagram of a light source system disclosed in embodiment 11;
fig. 18 is a schematic structural diagram of a light source system disclosed in embodiment 12;
fig. 19 is a schematic structural diagram of a light source system disclosed in embodiment 13;
fig. 20 is a schematic structural diagram of a light source system disclosed in embodiment 14.
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 light source systems disclosed in all of the following embodiments may employ a light source as shown in fig. 2 or fig. 3.
Fig. 2 is a schematic structural diagram of a light source according to the first scheme. As shown in FIG. 2, the light source 201 includes N lasers 2011 and N collimating elements 2012 corresponding to the N lasers 2011 one to one, where N is greater than or equal to 1. All the lasers 2011 emit blue light, and the light emitting directions of all the lasers 2011 are the same.
Fig. 3 is a schematic structural diagram of a light source of the second scheme. As shown in fig. 3, the light source 301 includes J lasers 3011P emitting P-polarized light, J collimating elements 3012P, K lasers 3011S emitting S-polarized light corresponding to the J lasers 3011P one by one, K collimating elements 3012S corresponding to the K lasers 3011S one by one, and a polarizing filter 3013, J is greater than or equal to 1, and K is greater than or equal to 1. P-polarized light emitted from the J lasers 3011P enters one side of the polarization filter 3013, and S-polarized light emitted from the K lasers 3011S enters the other side of the polarization filter 3013. The polarizing filter 3013 has a characteristic that it can reflect the incident S-polarized light and transmit the incident P-polarized light, and finally the P-polarized light emitted from the J lasers 3011P and the S-polarized light emitted from the K lasers 3011S are combined into one light by the polarizing filter 3013 and emitted from the light source 301.
The structure of the static wavelength conversion device used in the following embodiments can be as shown in fig. 4. The dynamic wavelength conversion device used in the following embodiments may be a dynamic wavelength conversion device as shown in fig. 5, or may be a dynamic wavelength conversion device as shown in fig. 6.
A static wavelength conversion device 401 as shown in fig. 4 comprises a reflective layer 401a and a wavelength conversion layer 401b disposed on the reflective layer 401a, wherein the wavelength conversion layer 401b is made of yellow phosphor, and the reflective layer 401a is a reflective substrate.
A dynamic wavelength conversion device as shown in fig. 5 is a rotatable fluorescent wheel 501 and the fluorescent wheel 501 has only one fluorescent region Y. The fluorescent region Y includes a reflective substrate and a wavelength conversion material (yellow phosphor) disposed on the reflective substrate, and converts incident blue light into yellow light.
Another dynamic wavelength conversion device as shown in fig. 6 is a rotatable fluorescent wheel 601 and the fluorescent wheel 601 has two fluorescent regions, which are a fluorescent region G and a fluorescent region R. The fluorescent region G includes a reflective substrate and a wavelength conversion material (green phosphor) disposed on the reflective substrate, the fluorescent region G converts incident blue light into green light, the fluorescent region R includes a reflective substrate and a wavelength conversion material (red phosphor) disposed on the reflective substrate, and the fluorescent region R converts incident blue light into red light.
Example 1
As shown in fig. 7, a light source system disclosed in this embodiment includes a light source 701, a light guide optical system 702, a reflective element 703, a dichroic beam splitter 704, a first collection optical system, a wavelength conversion device 706, a second collection optical system, a scattering optical system, and a condensing optical system. The dichroic beamsplitter 704 is a flat plate dichroic beamsplitter. The transmissive region of the reflective element 703 is a light passing hole 703 a. The light guide optical system 702 is composed of a positive lens 702a and a positive lens 702b, and the positive lens 702b is located at the light passing hole 703a of the reflective element 703. The first collection optical system is constituted by a lens group 705 including a lens 705a and a lens 705 b. The wavelength conversion device 706 includes a reflective layer 706a and a wavelength conversion layer 706b disposed on the reflective layer 706 a. The second collection optical system is constituted by a lens group 707 including a lens 707a and a lens 707 b. The scattering optics is formed by a reflective scattering plate 708. The collection optical system is constituted by a focusing lens 709.
The dichroic beam splitter 704 in this embodiment has the property of reflecting a portion of the incident blue light and transmitting the remaining blue light, while the dichroic beam splitter 704 also transmits the incident yellow light. Blue light emitted from the light source 701 is guided to the dichroic beam splitter 704 by the positive lens 702a and the positive lens 702b, and part of the blue light is reflected by the dichroic beam splitter 704 and the rest of the blue light is transmitted, wherein the blue light reflected by the dichroic beam splitter 704 is directed to the lens group 705, and the blue light transmitted by the dichroic beam splitter 704 is directed to the lens group 707. The lens group 705 converges the blue light from the dichroic beam splitter 704 toward the wavelength conversion device 706, the wavelength conversion device 706 converts the incident blue light into yellow light and directs the yellow light to the lens group 705, the yellow light is collected by the lens group 705 and directed to the dichroic beam splitter 704, the dichroic beam splitter 704 allows the incident yellow light to pass through, and the yellow light passes through the dichroic beam splitter 704 and directs to the focusing lens 709. The lens group 707 converges the blue light from the dichroic beam splitter 704 toward the reflective diffusion plate 708, the reflective diffusion plate 708 reflects the incident blue light to form diffused blue light, the blue light reflected by the reflective diffusion plate 708 is collected by the lens group 707 and then directed to the dichroic beam splitter 704, the dichroic beam splitter 704 may reflect a portion of the blue light and transmit the rest of the blue light, wherein the blue light reflected by the dichroic beam splitter 704 is directed to the focusing lens 709, the blue light transmitted by the dichroic beam splitter 704 is directed to the reflective element 703, and the reflective element 703 reflects most of the blue light from the dichroic beam splitter 704 and directs the most of the blue light back to the dichroic beam splitter 704, thereby realizing the reuse of the blue light. Finally, the yellow light transmitted through the dichroic beam splitter 704 and the blue light reflected by the dichroic beam splitter 704 are combined into a mixed light and emitted to the focusing lens 709, and then the mixed light is converged on the focal plane by the focusing lens 709, and the mixed light of the yellow light and the blue light is the white light.
Example 2
As shown in fig. 8, a light source system disclosed in this embodiment includes a light source 801, a light guiding optical system 802 (composed of a positive lens 802a and a positive lens 802 b), a reflective element 803 (a transmissive region is a light passing hole 803a), a dichroic beam splitter 804, a first collecting optical system (composed of a lens group 805 including a lens 805a and a lens 805 b), a wavelength conversion device 806 (including a reflective layer 806a and a wavelength conversion layer 806b provided on the reflective layer 806 a), a second collecting optical system (composed of a lens group 807 including a lens 807a and a lens 807 b), a scattering optical system (composed of a reflective scattering plate 808), and a condensing optical system (composed of a focusing lens 809).
This example differs from example 1 in that: the dichroic beamsplitter 804 in this embodiment is a cubic dichroic beamsplitter rather than a flat plate dichroic beamsplitter.
Example 3
As shown in fig. 9, a light source system disclosed in this embodiment includes a light source 901, a light guide optical system 902 (constituted by a positive lens 902a and a positive lens 902 b), a reflective element 903, a dichroic beam splitter 904, a first collection optical system (constituted by a lens group 905 including a lens 905a and a lens 905 b), a wavelength conversion device 906 (including a reflective layer 906a and a wavelength conversion layer 906b provided on the reflective layer 906 a), a second collection optical system (constituted by a lens group 907 including a lens 907a and a lens 907 b), a scattering optical system (constituted by one reflective scattering plate 908), a condensing optical system (constituted by one focusing lens 909), and a dodging optical system.
The present embodiment is different from embodiment 1 in that a light uniformizing optical system is added, wherein the light uniformizing optical system is composed of a diffusion sheet 910 and the diffusion sheet 910 is located at the light passing hole 903a of the reflection element 903, for uniformizing the blue light emitted from the light source 901, thereby reducing the risk of damaging the wavelength conversion device 906.
Example 4
As shown in fig. 10, a light source system disclosed in this embodiment includes a light source 1001, a light guiding optical system 1002 (composed of a positive lens 1002a and a positive lens 1002 b), a reflective element 1003 (a transmissive region is a light passing hole 1003a), a dichroic beam splitter 1004, a first collecting optical system (composed of a lens group 1005 including a lens 1005a and a lens 1005 b), a wavelength conversion device 1006 (including a reflective layer 1006a and a wavelength conversion layer 1006b provided on the reflective layer 1006 a), a second collecting optical system (composed of a lens group 1007 including a lens 1007a and a lens 1007 b), a scattering optical system 1008, a condensing optical system (composed of one focusing lens 1009), and a dodging optical system (composed of one diffusing sheet 1010).
This example differs from example 3 in that: the scattering optical system 1008 in this embodiment is constituted by a transmissive scattering plate 1008a and a reflecting mirror 1008 b.
Example 5
As shown in fig. 11, a light source system disclosed in this embodiment includes a light source 1101, a light guiding optical system 1102 (composed of a positive lens 1102a and a positive lens 1102 b), a reflecting element 1103 (a transmissive region is a light passing hole 1103a), a dichroic beam splitter 1104, a first collecting optical system (composed of a lens group 1105 including a lens 1105a and a lens 1105 b), a wavelength conversion device, a second collecting optical system (composed of a lens group 1107 including a lens 1107a and a lens 1107 b), a scattering optical system, a condensing optical system (composed of a focusing lens 1109), and a dodging optical system (composed of a diffusion sheet 1110).
The first difference between this embodiment and embodiment 3 is that: the wavelength conversion device in this embodiment is a rotatable phosphor wheel 1106.
A second difference between this embodiment and embodiment 3 is that: the scattering optics in this embodiment is a rotatable reflective scattering plate 1108.
Example 6
As shown in fig. 12, a light source system disclosed in this embodiment includes a light source 1201, a light guiding optical system 1202 (composed of a positive lens 1202a and a positive lens 1202 b), a reflecting element, a dichroic beam splitter 1204, a first collecting optical system (composed of a lens group 1205 including a lens 1205a and a lens 1205 b), a wavelength conversion device 1206 (including a reflecting layer 1206a and a wavelength conversion layer 1206b disposed on the reflecting layer 1206 a), a second collecting optical system (composed of a lens group 1207 including a lens 1207a and a lens 1207 b), a scattering optical system (composed of one reflective diffusion plate 1208), a condensing optical system (composed of one focusing lens 1209), and a dodging optical system (composed of one diffusion plate 1210).
This example differs from example 3 in that: the reflecting element in this embodiment is a curved surface rather than a flat surface, and specifically, the reflecting element in this embodiment is a concave mirror 1203 having a light passing hole 1203a at the center, where the light passing hole 1203a is a transmission region of the reflecting element. In general, the light beam emitted from the second collection optical system toward the dichroic beam splitter 1204 has a small diffusion angle, and the concave mirror 1203 in this example can reflect the blue light from the dichroic beam splitter 1204 back to the dichroic beam splitter 1204 more efficiently than in embodiment 3.
Example 7
As shown in fig. 13, a light source system disclosed in this embodiment includes a light source 1301, a light guiding optical system 1302, a reflective element 1303 (a transmissive region is one light passing hole 1303a), a dichroic beam splitter 1304, a first collecting optical system (composed of a lens group 1305 including a lens 1305a and a lens 1305 b), a wavelength conversion device 1306 (including a reflective layer 1306a and a wavelength conversion layer 1306b provided on the reflective layer 1306 a), a second collecting optical system (composed of a lens group 1307 including a lens 1307a and a lens 1307 b), a scattering optical system (composed of one reflective scattering plate 1308), a condensing optical system (composed of one focusing lens 1309), and a diffusing sheet 1310.
This example differs from example 3 in that: the light guiding optical system 1302 in the present embodiment is configured by a positive lens 1302a and a negative lens 1302 b.
Example 8
As shown in fig. 14, a light source system disclosed in this embodiment includes a light source 1401, a light guide optical system 1402, a reflection element 1403 (a transmissive region is a light passing hole 1403a), a dichroic beam splitter 1404, a first collection optical system (composed of a lens group 1405 including a lens 1405a and a lens 1405 b), a wavelength conversion device 1406 (including a reflection layer 1406a and a wavelength conversion layer 1406b provided on the reflection layer 1406 a), a second collection optical system (composed of a lens group 1407 including a lens 1407a and a lens 1407 b), a scattering optical system (composed of a reflective diffusion plate 1408), a condensing optical system (composed of a focusing lens 1409), and a light uniformizing optical system (composed of a diffusion plate 1410).
This example differs from example 3 in that: the light guide optical system 1402 in the present embodiment is composed of a positive lens 1402a, a positive lens 1402b, and a positive lens 1402 c.
Example 9
As shown in fig. 15, a light source system disclosed in this embodiment includes a light source 1501, a light guiding optical system 1502, a reflective element 1503 (a transmissive region is a light passing hole 1503a), a dichroic beam splitter 1504, a first collecting optical system (composed of a lens group 1505 including a lens 1505a and a lens 1505 b), a wavelength conversion device 1506 (including a reflective layer 1506a and a wavelength conversion layer 1506b provided on the reflective layer 1506 a), a second collecting optical system (composed of a lens group 1507 including a lens 1507a and a lens 1507 b), a scattering optical system (composed of a reflective scattering plate 1508), and a condensing optical system (composed of a focusing lens 1509).
This example differs from example 1 in that: the light guide optical system 1502 in this embodiment is composed of a positive lens 1502a and a light guide bar 1502b, and the light guide bar 1502b passes through the light passing hole 1503a of the reflective element 1503. The two end faces of the light guide bar 1502b are both non-planar, with the end face facing the positive lens 1502a being concave and the end face facing the dichroic beamsplitter 1504 being convex.
Example 10
As shown in fig. 16, a light source system disclosed in this embodiment includes a light source 1601, a light guide optical system 1602, a reflective element 1603 (a transmissive region is a light passing hole 1603a), a dichroic beam splitter 1604, a first collection optical system (composed of a lens group 1605 including a lens 1605a and a lens 1605 b), a wavelength conversion device 1606 (including a reflective layer 1606a and a wavelength conversion layer 1606b provided on the reflective layer 1606 a), a second collection optical system (composed of a lens group 1607 including a lens 1607a and a lens 1607 b), a scattering optical system (composed of a reflective scattering plate 1608), and a condensing optical system (composed of a focusing lens 1609).
This example differs from example 1 in that: the light guide optical system 1602 in this embodiment is composed of a positive lens 1602a and a compound parabolic condenser 1602 b.
Example 11
As shown in fig. 17, a light source system disclosed in this embodiment includes a light source 1701, a light guiding optical system 1702 (composed of a positive lens 1702a and a positive lens 1702 b), a reflecting element, a dichroic beam splitter 1704, a first collecting optical system (composed of a lens group 1705 including a lens 1705a and a lens 1705 b), a wavelength conversion device 1706 (including a reflecting layer 1706a and a wavelength conversion layer 1706b disposed on the reflecting layer 1706 a), a second collecting optical system (composed of a lens group 1707 including a lens 1707a and a lens 1707 b), a scattering optical system (composed of one reflective scattering plate 1708), and a condensing optical system (composed of one focusing lens 1709).
This example differs from example 1 in that: the reflective element in this embodiment is a transmissive diffuser plate 1703 with a reflective film coated on a partial area, wherein an area 1703a of the transmissive diffuser plate 1703 without the reflective film is a transmissive area.
Example 12
As shown in fig. 18, a light source system disclosed in this embodiment includes a light source 1801, a light guide optical system 1802 (composed of a positive lens 1802a and a positive lens 1802 b), a reflective element 1803 (a transmissive region is a light through hole 1803a), a dichroic beam splitter 1804, a first collection optical system (composed of a lens group 1805 including a lens 1805a and a lens 1805 b), a wavelength conversion device 1806 (including a reflective layer 1806a and a wavelength conversion layer 1806b provided on the reflective layer 1806 a), a second collection optical system (composed of a lens group 1807 including a lens 1807a and a lens 1807 b), a scattering optical system (composed of one reflective scattering plate 1808), a condensing optical system (composed of one focusing lens 1809), and a first integrator 1811.
The present embodiment is different from embodiment 1 in that a first light unifying rod 1811 is added, and the first light unifying rod 1811 is located on the optical path between the first collection optical system and the wavelength conversion device 1806, for homogenizing the blue light emitted from the dichroic beam splitter 1804 to the wavelength conversion device 1806, thereby reducing the risk of damage to the wavelength conversion device 1806.
Example 13
As shown in fig. 19, the light source system disclosed in this embodiment includes a light source 1901, a light guide optical system 1902 (composed of a positive lens 1902a and a positive lens 1902 b), a reflective element 1903 (a transmissive region is a light-passing hole 1903a), a dichroic beam splitter 1904, a first collection optical system (composed of a lens group 1905 including a lens 1905a and a lens 1905 b), a wavelength conversion device 1906 (including a reflective layer 1906a and a wavelength conversion layer 1906b provided on the reflective layer 1906 a), a second collection optical system (composed of a lens group 1907 including a lens 1907a and a lens 1907 b), a scattering optical system (composed of a reflective scattering plate 1908), a condensing optical system (composed of a focusing lens 1909), and a wave plate 1912.
The present embodiment is different from embodiment 1 in that a wave plate 1912 is added, the wave plate 1912 is located between the light source 1901 and the positive lens 1902a and is used to change the polarization state of the blue light emitted from the light source 1901, and since the dichroic beam splitter 1912 may have different reflectances for the incident light with different polarization states, the dichroic beam splitter can achieve different reflectances for the incident blue light emitted from the light source 1901 by using the wave plate 1912.
Example 14
As shown in fig. 20, the light source system disclosed in this embodiment includes a light source 2001, a light guiding optical system 2002 (constituted by a positive lens 2002a and a positive lens 2002 b), a reflective element 2003 (a transmissive region is one light passing hole 2003a), a dichroic beam splitter 2004, a first collecting optical system (constituted by a lens group 2005 including a lens 2005a and a lens 2005 b), a wavelength conversion device 2006 (including a reflective layer 2006a and a wavelength conversion layer 2006b provided on the reflective layer 2006 a), a second collecting optical system (constituted by a lens group 2007 including a lens 2007a and a lens 2007 b), a scattering optical system (constituted by one reflective scattering plate 2008), and a condensing optical system (constituted by one focusing lens 2009).
This embodiment differs from embodiment 1 in that a dichroic beamsplitter 2004 is selected, where the dichroic beamsplitter 2004 is a flat plate dichroic beamsplitter that has the property of reflecting a portion of the incident blue light and transmitting the remainder of the blue light, while reflecting the incident yellow light. Blue light emitted from the light source 2001 is guided by the positive lens 2002a and the positive lens 2002b to the dichroic beam splitter 2004, and the dichroic beam splitter 2004 reflects a part of the blue light and transmits the remaining blue light, wherein the blue light transmitted through the dichroic beam splitter 2004 is directed to the lens group 2005 and the blue light reflected by the dichroic beam splitter 2004 is directed to the lens group 2007. The lens group 2005 converges blue light from the dichroic beam splitter 2004 toward the wavelength conversion device 2006, the wavelength conversion device 2006 converts incident blue light into yellow light and directs the yellow light to the lens group 2005, the yellow light is collected by the lens group 2005 and directed to the dichroic beam splitter 2004, and the yellow light is reflected by the dichroic beam splitter 2004 and directed to the focusing lens 2009. The lens group 2007 converges blue light from the dichroic beam splitter 2004 toward the reflective diffusion plate 2008, the reflective diffusion plate 2008 reflects the incident blue light and forms diffused blue light, the blue light reflected by the reflective diffusion plate 2008 is collected by the lens group 2007 and then directed to the dichroic beam splitter 2004, the dichroic beam splitter 2004 may reflect a portion of the blue light and transmit the rest of the blue light, wherein the blue light transmitted through the dichroic beam splitter 2004 is directed to the focusing lens 2009, the blue light reflected by the dichroic beam splitter 2004 is directed to the reflective element 2003, and the reflective element 2003 reflects most of the blue light from the dichroic beam splitter 2004 and then directs it back to the dichroic beam splitter 2004, thereby achieving reuse of the blue light. Finally, the yellow light reflected by the dichroic beam splitter 2004 and the blue light transmitted through the dichroic beam splitter 2004 are combined into a mixed light, and the mixed light is emitted to the focusing lens 2009 and then converged on the focal plane by the focusing lens 2009, and the mixed light of the yellow light and the blue light is the white light.
Claims (20)
1. A light source system comprising a light source, a reflective element, a dichroic beamsplitter, a wavelength conversion device, and a scattering optics system, wherein:
the light source is used for emitting light of a first wave band;
the reflective element is located in an optical path between the light source and the dichroic beam splitter, the reflective element having a transmissive region that allows light in the first wavelength band to pass or pass therethrough and a reflective region that reflects light in the first wavelength band from the dichroic beam splitter and reflects at least a portion of the light back to the dichroic beam splitter;
the dichroic beam splitter receives light of the first wavelength band emitted from the light source and passing through or transmitted through the transmissive region of the reflective element, reflects a portion of the light of the first wavelength band and emits it from a first optical path, and transmits at least a remaining portion of the light of the first wavelength band and emits it from a second optical path;
the wavelength conversion device receives the light of the first wave band emitted from one of the first light path or the second light path, converts at least part of the light of the first wave band into light of a second wave band different from the first wave band, and leads at least part of the light of the second wave band to the dichroic beam splitter;
the scattering optical system receives the light of the first wave band emitted from the other of the first optical path or the second optical path, reflects the light and forms scattered light of the first wave band, and at least part of the scattered light of the first wave band is emitted to the dichroic beam splitter;
the dichroic beamsplitter has the following properties with respect to incident light in the first and second wavelength bands:
reflecting a part of the incident light in the first wavelength band and transmitting the rest at least part of the light in the first wavelength band;
and transmitting or reflecting the incident light of the second wavelength band.
2. The light source system of claim 1, wherein the light source comprises N lasers and N collimating elements corresponding to the N lasers one to one, where N ≧ 1, wherein:
the laser is used for emitting light in the first wave band;
the collimation element is integrated in the laser or arranged outside the laser and is used for collimating the light of the first wave band emitted by the laser.
3. A light source system according to claim 2, further comprising a polarization selection element in the light source, wherein the polarization selection element is characterized by reflecting S-polarized light and transmitting P-polarized light; at least one laser in the light source is used for emitting S-polarized light of the first wave band to form a first incident light, and the rest lasers in the light source are used for emitting P-polarized light of the first wave band to form a second incident light; the first incident light and the second incident light are combined into one path of light by the polarization selection element and then emitted, and the light of the first wave band emitted by the light source is formed.
4. A light source system according to claim 1, wherein said reflective element is planar or non-planar.
5. A light source system according to claim 1, wherein the transmissive region of the reflective element is a light-transmitting hole or a light-transmitting structure made of a light-transmitting material.
6. The light source system according to claim 1, wherein the reflective element is a transmissive diffuser plate having a partial area coated with a reflective film, wherein an area of the transmissive diffuser plate not coated with the reflective film is the transmissive area, and an area of the transmissive diffuser plate coated with the reflective film is the reflective area.
7. A light source system according to claim 1, wherein the scattering optical system is constituted by a reflective scattering plate, or by a transmissive scattering plate and a reflector.
8. A light source system according to claim 1, further comprising a light guiding optical system, located on a light path from the light source to the dichroic beam splitter, for guiding at least a portion of the light of the first wavelength band emitted from the light source to enter the dichroic beam splitter through or transmitted by the transmissive region of the reflective element.
9. A light source system according to claim 8, wherein said light guiding optical system is located partially or entirely at said transmissive region of said reflective element.
10. A light source system according to claim 8, wherein said light guide optical system consists of N1A lens, N2A compound parabolic concentrator and/or N3At least one optical element in each light guide column, N1≥1，N2≥1，N3≥1。
11. The light source system of claim 10, wherein the end surface of the light guide post is planar or non-planar.
12. A light source system according to claim 1, further comprising a dodging optical system positioned on a light path from said light source to said dichroic beamsplitter for homogenizing light of said first wavelength band emitted by said light source.
13. A light source system according to claim 12, wherein said dodging optical system is located partially or entirely at said transmissive region of said reflective element.
14. A light source system as claimed in claim 12, wherein the dodging optical system is composed of a diffuser, an optical integrator rod or at least one fly eye lens array.
15. A light source system according to claim 1, further comprising a first collection optical system positioned in an optical path between said dichroic beamsplitter and said wavelength conversion device for collecting light from said first wavelength band from said dichroic beamsplitter toward said wavelength conversion device, and for collecting light from said wavelength conversion device and directing it toward said dichroic beamsplitter.
16. A light source system according to claim 15, further comprising a first integrator rod positioned on an optical path between said first collection optical system and said wavelength conversion device for homogenizing light of said first wavelength band directed from said dichroic beam splitter to said wavelength conversion device.
17. A light source system according to claim 1, further comprising a second collection optical system disposed on an optical path between said dichroic beam splitter and said scattering optical system for converging light of said first wavelength band from said dichroic beam splitter toward said scattering optical system, and for collecting light of said first wavelength band from said scattering optical system and directing it toward said dichroic beam splitter.
18. A light source system as claimed in claim 17, further comprising a second integrator rod positioned on the optical path between the second collection optical system and the scattering optical system for homogenizing the light of the first wavelength band emitted from the dichroic beam splitter to the scattering optical system.
19. The light source system according to claim 1, further comprising a condensing optical system for condensing the light emitted from the dichroic beam splitter on a focal plane of the condensing optical system.
20. A light source system according to claim 1, further comprising a wave plate positioned in the optical path from the light source to the dichroic beamsplitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022500999.XU CN214064607U (en) | 2020-11-02 | 2020-11-02 | Light source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022500999.XU CN214064607U (en) | 2020-11-02 | 2020-11-02 | Light source system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214064607U true CN214064607U (en) | 2021-08-27 |
Family
ID=77399280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022500999.XU Active CN214064607U (en) | 2020-11-02 | 2020-11-02 | Light source system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214064607U (en) |
-
2020
- 2020-11-02 CN CN202022500999.XU patent/CN214064607U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE48753E1 (en) | Projection image display device including optical system | |
| CN213810115U (en) | Light source device | |
| US7740375B2 (en) | High brightness illumination device with incoherent solid state light source | |
| US7510316B2 (en) | Ultra compact illumination system for display systems | |
| US20070126329A1 (en) | Brightness enhancement film and backlight module | |
| US11209132B2 (en) | Light source device | |
| CN1779502A (en) | Illumination unit and projection type image display apparatus employing the same | |
| CN107272311B (en) | Light-emitting device, related projection system and lighting system | |
| CN107436526B (en) | Light source device and projection display device | |
| US20180266638A1 (en) | Light source device, lighting apparatus, and vehicle lamp device | |
| CN214501113U (en) | Light emitting device | |
| EP3139083A2 (en) | Light emitting apparatus and illumination apparatus including the same | |
| CN217034495U (en) | Laser light source system and projection equipment | |
| CN112413428A (en) | Light source system | |
| CN106950785B (en) | Light source device and lighting device | |
| US10408421B2 (en) | Light emitting apparatus | |
| CN114911123A (en) | Laser light source system and projection equipment | |
| CN214064607U (en) | Light source system | |
| US20030214634A1 (en) | Illumination optical system and projector | |
| JP4968784B2 (en) | Optical member manufacturing method and lighting device manufacturing method | |
| CN112283609B (en) | Light source equipment | |
| CN213810114U (en) | Light source apparatus | |
| CN211574811U (en) | Laser illumination structure with uniform light color | |
| CN214504020U (en) | Optical system and augmented reality device | |
| CN113074328A (en) | Light beam lamp light source system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |