CN215526338U - Light source light combining system, projection lighting system and projection equipment - Google Patents
Light source light combining system, projection lighting system and projection equipment Download PDFInfo
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- CN215526338U CN215526338U CN202121197936.XU CN202121197936U CN215526338U CN 215526338 U CN215526338 U CN 215526338U CN 202121197936 U CN202121197936 U CN 202121197936U CN 215526338 U CN215526338 U CN 215526338U
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Abstract
The utility model discloses a light source light combining system, a projection lighting system and a projection device, wherein the light source light combining system comprises: the red light source emits a first light beam, the compensation red light source emits a second light beam, the blue-green light source emits combined light which comprises blue light and green light, the first light beam, the second light beam and the combined light are converged and combined, the converged and combined light position of the first light beam and the combined light is a first position, the converged and combined light position of the second light beam and the combined light is a second position, and the total reflection element is arranged at the first position and/or the second position. The technical scheme of the utility model can ensure the reflection efficiency of the reflected light, so that the brightness of the light source meets the use requirement.
Description
Technical Field
The utility model relates to the technical field of projection display, in particular to a light source light combining system, a projection lighting system and projection equipment.
Background
Currently, in the projection market, the illumination brightness is generally increased by increasing the current, but when the current is increased to a certain degree, the energy is not converted into the brightness any more, but is converted into the heat energy. Especially in the red light range of the long wavelength band, the effect of brightness reduction is more remarkable. In order to meet the requirement of high brightness in the projection market, a compensation lamp mode can be adopted. The red light is emitted by the compensation lamp, so that the light converted into heat energy is compensated, and the light brightness in the projection lighting system is compensated.
A lens is arranged at the position where the light rays emitted by the compensating lamp and the red light of the illumination light source are converged into the illumination light path, and a reflecting film is arranged on the surface of the lens. The light of the compensation lamp and the red light of the illumination light source are converged into an illumination light path through the reflecting film. However, the incident angle of the light beam of the compensation lamp and the red light of the illumination light source on the surface of the reflective film may be largely changed, which may lower the reflection efficiency of the light beam and make it difficult to meet the luminance requirement of the illumination light path.
Disclosure of Invention
Therefore, in order to solve the problems that the incident angle of the light of the conventional compensation lamp and the red light of the illumination light source on the surface of the reflective film is greatly changed, the reflective efficiency of the reflective film of the lens is reduced, and the brightness requirement of the illumination light path is difficult to achieve, it is necessary to provide a light source light combining system, a projection illumination system and a projection device, which aim to ensure the reflective efficiency of the reflected light and enable the brightness of the light source to meet the use requirement.
In order to achieve the above object, the present invention provides a light source light combining system, including:
a red light source that emits a first light beam;
the compensation red light source emits a second light beam, and the second light beam and the beam combining light are converged and combined;
the blue-green light source group emits combined light, the combined light comprises blue light and green light, and the first light beam, the second light beam and the combined light are converged and combined; and
and the light converging and combining position of the first light beam and the combined light beam is a first position, the light converging and combining position of the second light beam and the combined light beam is a second position, and the total reflection element is arranged at the first position and/or the second position.
Optionally, the total reflection element is a triangular prism.
Optionally, the total reflection element includes two orthogonal right-angle surfaces and an inclined surface connected to the two right-angle surfaces, one of the right-angle surfaces is disposed facing the red light source or the compensation red light source, and the inclined surface is disposed facing the blue-green light source group;
the combined light of the blue-green light source group is emitted into the total reflection element through the inclined plane and transmits the total reflection element;
the first light beam of the red light source or the second light beam of the compensation red light source enters the total reflection element through the right-angle surface and is totally reflected through the inclined surface.
Optionally, the central main wavelength of the first light beam is λ1The central main wavelength of the second light beam is lambda2，λ1≠λ2。
Optionally, two total reflection elements are provided, one total reflection element is disposed at the first position, and the other total reflection element is disposed at the second position.
Optionally, the blue-green light source group comprises a blue light source and a green light source, the blue light source emits blue light, and the green light source emits green light;
and a light splitting sheet is arranged in the emergent direction of the blue light source and the green light source, and the green light and the blue light are converged and combined through the light splitting sheet.
Optionally, the blue-green light source group further includes a pump light source, a light emitting surface of the pump light source faces the light splitting sheet, the pump light source emits pump light, and the pump light is emitted to the green light source through the light splitting sheet.
Optionally, the emitting direction of the blue light source is the same as the emitting direction of the combined beam, the emitting direction of the green light source is perpendicular to the emitting direction of the combined beam, a blue light transmission film and a green light reflection film are plated on the surface of the light splitter, and the pump light transmits the light splitter to emit to the green light source;
or the emitting direction of the green light source is the same as that of the combined light, the emitting direction of the blue light source is vertical to that of the combined light, a green light transmission film and a blue light reflection film are plated on the surface of the light splitting sheet, and the pumping light is reflected to the green light source through the light splitting sheet.
Optionally, the red light source and the compensation red light source are arranged on the same side of the emergent direction of the combined beam;
or the red light source and the compensation red light source are arranged on two opposite sides of the emergent direction of the combined beam.
In addition, in order to achieve the above object, the present invention further provides a projection lighting system, where the projection lighting system includes a plurality of collimator lens sets and the light source combination system as described above, light emitting diodes are disposed in all of the red light source, the compensation red light source, and the cyan light source set in the light source combination system, and the collimator lens sets are disposed in the emergent light paths of the cyan light source set, the red light source, and the compensation red light source.
In addition, in order to achieve the above object, the present invention further provides a projection apparatus, which includes a housing and the projection illumination system described above, wherein the projection illumination system is disposed in the housing.
In the technical scheme provided by the utility model, the blue-green light source group emits the combined light, the red light source emits the first light beam, and the first light beam and the combined light are converged and combined into one light beam. The first light beam is red light, the combined light beam comprises blue light and green light, and the red light, the blue light and the green light are converged and combined to form illumination light. The compensation red light source emits a second light beam which is also red light, and the second light beam compensates for the loss of the first light beam in the red light source in the process of converting light energy into heat energy. The first light beam converges with the combined light beam at the first position, and the second light beam converges with the combined light beam at the second position. A total reflection element is disposed at least one of the first position and the second position. When the combined beam light passes through the total reflection element, the combined beam light is transmitted to the total reflection element. The first light beam or the second light beam is reflected by the total reflection element, and the first light beam, the second light beam and the combined light beam are combined into the same light beam. When the first light beam or the second light beam passes through the total reflection element, total reflection of light occurs. The total reflection element can receive a larger incident angle, the incident angle of the first light beam or the second light beam can be flexibly adjusted within the range of the incident angle which can be received by the total reflection element, and the total reflection of the light can be generated as long as the total reflection condition of the light is met and the incident angle is larger than or equal to the critical angle. Even if the incident angle of the first light beam or the second light beam is changed greatly, the light can be totally reflected, the reflection efficiency of the light is ensured, and the brightness of the light source meets the use requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light source light combining system according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a light source combining system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a light source light combining system according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light source light combining system according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a light source light combining system according to a fifth embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Blue-green |
210 | |
| 101 | |
30 | Compensating |
| 110 | |
310 | |
| 120 | |
40 | |
| 130 | |
410 | |
| 131 | |
420 | Inclined |
| 20 | |
50 | Collimating lens group |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
In the related art, a reflective film is provided on a surface of a lens. After the incident angle of the light of the compensation lamp and the red light of the illumination light source deviates 5 degrees on the surface of the reflecting film, the reflecting efficiency is reduced by 50 to 60 percent. Thus, the reflection efficiency of light is reduced, the number of red light portions of the illumination light source is reduced, and it is difficult to meet the luminance requirement of the illumination light path.
In order to solve the above problem, referring to fig. 1, the present invention provides a light source light combining system, including: a blue-green light source group 10, a red light source 20, a compensated red light source 30 and a total reflection element 40. The blue-green light source group 10 emits a combined light beam 101, and the combined light beam 101 comprises blue light and green light; the blue-green light source group 10 has at least two light emitting units, one of which emits blue light and the other of which emits green light, and the combined light 101 includes a light beam formed by mixing the blue light and the green light. The light rays emitted by the blue-green light source group 10, the red light source 20 and the compensation red light source 30 are converged to form illumination light. The total reflection element 40 serves to condense the light emitted by the red light source 20 and the light emitted by the compensation red light source 30 into the combined beam 101. The effect of the compensating red light source 30 is to emit a compensating red light, i.e. the second light beam 310, which compensates for the insufficient amount of the first light beam emitted by the red light source 20.
Specifically, the red light source 20 emits a first light beam 210, the first light beam 210 and the combined light beam 101 converge and combine, the compensation red light source 30 emits a second light beam 310, the second light beam 310 and the combined light beam 101 converge and combine, a converging and combining position of the first light beam 210 and the combined light beam 101 is a first position, a converging and combining position of the second light beam 310 and the combined light beam 101 is a second position, the total reflection element 40 is disposed at the first position and/or the second position, the combined light beam 101 transmits through the total reflection element 40, and an incident angle of the first light beam 210 or the second light beam 310 in the total reflection element 40 is greater than or equal to a total reflection critical angle. It can be seen that there are three situations where the total reflection element 40 is located. In the first case, the total reflection element 40 is arranged in a first position. In the second case, the total reflection element 40 is arranged in the second position. In a third case, the total reflecting element 40 is disposed in both the first position and the second position. The total reflection element 40 is arranged at the first position, the refractive index of the total reflection element 40 is greater than the refractive index of air, after the first light beam 210 enters the total reflection element 40, the first light beam 210 enters the optically thinner medium from the optically denser medium, the incident angle of the first light beam 210 is greater than or equal to the critical angle of total reflection, and the first light beam 210 satisfies the total reflection condition of light. The first light beam 210 is reflected by the total reflection element 40, the combined light beam 101 is transmitted by the total reflection element 40, the direction of the reflected first light beam 210 is the same as that of the combined light beam 101, and the first light beam 210 and the combined light beam 101 are converged and combined. Similarly, the second light beam 310 may also be converged and combined with the combined light beam 101 via the total reflection element 40. In this embodiment, the combined beam may be combined with the first beam first and then combined with the second beam. Alternatively, the first beam and the second beam may be combined before being combined with the combined beam. It is also possible that the combined beam is combined with the second beam and then with the first beam. The sequence of the light combination and the arrangement positions of the blue-green light source group 10, the red light source 20 and the compensation red light source 30 are not particularly limited.
In the technical solution provided in this embodiment, the blue-green light source group 10 emits the combined light beam 101, the red light source 20 emits the first light beam 210, and the first light beam 210 and the combined light beam 101 are converged and combined into one light beam. The first light beam 210 is red light, the combined light beam 101 includes blue light and green light, and the red light, the blue light and the green light are combined to form illumination light. The compensating red light source 30 emits a second light beam 310, the second light beam 310 also being red light, and the second light beam 310 compensates for the loss of the first light beam 210 in the red light source 20 in the conversion of light energy into heat energy. The first light beam 210 converges with the combined beam of light 101 at a first location and the second light beam 310 converges with the combined beam of light 101 at a second location. The total reflection element 40 is disposed at least one of the first position and the second position. When the combined beam 101 passes through the total reflection element 40, the combined beam 101 is transmitted through the total reflection element 40. The first light beam 210 or the second light beam 310 is reflected by the total reflection element 40, and the first light beam 210 and the second light beam 310 are combined with the combined light beam 101 into the same light beam. The first light beam 210 or the second light beam 310 undergoes total reflection of light while passing through the total reflection element 40. The total reflection element 40 can accept a large incident angle, and the incident angle of the first light beam 210 or the second light beam 310 can be flexibly adjusted within the range of the incident angle that can be accepted by the total reflection element 40, so long as the total reflection condition of light is satisfied and the incident angle is greater than or equal to the critical angle, the total reflection of light can occur. Even if the incident angle of the first light beam 210 or the second light beam 310 is greatly changed, the light can be totally reflected, the reflection efficiency of the light is ensured, and the brightness of the light source meets the use requirement.
Wherein, total reflection component is the prism, and the prism is that the cross section is triangular prism, and the prism has three surface, and one of them surface is towards blue and green light source group, and another direction is towards red light source. If two total reflection elements are provided, the other surface of one of the triangular prisms faces the red light source and the other surface of the other triangular prism faces the compensated red light source.
In the above embodiments, in order to ensure the total reflection effect. The total reflection element 40 includes two orthogonal right-angle surfaces 410 and an inclined surface 420 connected with the two right-angle surfaces 410, the right-angle surface 410 is arranged facing the red light source 20 or the compensation red light source 30, and the inclined surface 420 is arranged facing the blue-green light source group 10; the combined beam light 101 of the blue-green light source group 10 is emitted into the total reflection element 40 through the inclined plane 420 and transmits through the total reflection element 40; the first light beam 210 of the red light source 20 or the second light beam 310 of the compensation red light source 30 enters the total reflection element 40 through a right-angle surface 410 and is totally reflected through an inclined surface 420. Therefore, the first light beam 210 enters through one of the right-angle surfaces 410 of the total reflection element 40, exits through the other right-angle surface 410, and exits together with the combined light beam 101 at the other right-angle surface 410. Wherein, the surface where the total reflection occurs is an inclined plane 420. The two right-angled surfaces 410 and the inclined surface 420 form an isosceles right triangle. The isosceles right triangle-shaped total reflection element 40 is convenient for installation and placement of positions and production and processing of the total reflection element 40. Naturally, in order to further enhance the reflection effect, a red light reflection film is provided on the inclined surface. A blue-green antireflection film can be arranged on the inclined plane, so that the transmittance of blue light and green light is improved.
Further, the incident angle of the first light beam 210 or the second light beam 310 on the inclined plane 420 is θ, which satisfies: theta is more than or equal to 35 degrees and less than or equal to 55 degrees. The incident angle between 35 deg. and 55 deg. can ensure that the first light beam 210 and the second light beam 310 are fully emitted at the position of the inclined plane 420.
Furthermore, the refractive index of the total reflection element 40 is n, which satisfies: n is more than 1.74, the material of the total reflection element 40 can be optical plastic or optical glass. The optical plastic is easy to process, and the optical performance of the optical glass is better.
In another embodiment, to ensure that the amount of red light is sufficient. The total reflection elements 40 are two, one total reflection element 40 is disposed at the first position, and the other total reflection element 40 is disposed at the second position. That is to say, the first light beam 210 and the second light beam 310 both pass through the total reflection element 40, the first light beam 210 and the second light beam 310 both are red light, and the total reflection element 40 is disposed on the propagation paths of the first light beam 210 and the second light beam 310, so as to improve the reflection efficiency of the red light.
In the above embodiments, the central main wavelength of the first light beam is λ1The central main wavelength of the second light beam is lambda2，λ1≠λ2. Specifically, the wavelengths of the first light beam 210 and the second light beam 310 may be the same or different. When the wavelengths of the first light beam 210 and the second light beam 310 are different, for example, the wavelength of the first light beam 210 ranges from 613nm to 618nm, and the wavelength of the second light beam 310 ranges from 650nm to 655 nm. The wavelength of the two beams of light is different, so that mutual interference can be avoided, and the two beams of light are red light in the illumination display part, so that the illumination projection display is ensured in a normal color range. Besides, the wavelengths of the first light beam 210 and the second light beam 310 are the same, so that the second light beam 310 can compensate the first light beam 210, and the color variation caused by the wavelength difference can be reduced. The above wavelength ranges all refer to the range of the central dominant wavelength.
In the above embodiment, the blue-green light source group 10 includes the blue light source 120 and the green light source 110, the blue light source 120 emits blue light, and the green light source 110 emits green light; a light splitting sheet is arranged in the emitting direction of the blue light source 120 and the green light source 110, and the green light and the blue light are converged by the light splitting sheet. The beam splitter is disposed at an angle in the propagation direction of the combined beam 101, one surface of the beam splitter faces the blue light source 120, and the other surface of the beam splitter faces the green light source 110. And film layers such as a blue light reflecting film and a green light antireflection film are arranged on the surface of the light splitting sheet, so that blue light reflection and green light transmission are ensured, and the blue light and the green light are converged and combined. The film layer of the light splitting film can also comprise a green light reflection film and a blue light antireflection film, so that green light reflection and blue light transmission are ensured, and the blue light and the green light are converged and combined.
In the above embodiment, the light emitting efficiency of the green light source 110 is low, in order to improve the light emitting efficiency of the green light source 110. The blue-green light source group 10 further includes a pump light source 131, a light emitting surface of the pump light source 131 faces the beam splitter, the pump light source 130 emits pump light 131, and the pump light 131 is emitted to the green light source 110 through the beam splitter. The pump light 131 can increase the fluorescent molecules of the green light source 110 to excite the emission amount of the green light, thereby improving the light emitting efficiency of the green light source 110.
The arrangement positions of the blue light source 120 and the green light source 110 include two cases.
Referring to fig. 2, in the first case, the emission direction of the blue light source 120 is the same as the emission direction of the combined beam 101, the emission direction of the green light source 110 is perpendicular to the emission direction of the combined beam 101, the surface of the beam splitter is coated with a blue light transmission film and a green light reflection film, and the pump light 131 transmits the beam splitter to the green light source 110. At this time, one surface of the light splitting sheet faces the blue light source 120, and the other surface faces the green light source 110. The beam splitter and the beam combiner 101 are arranged at an included angle ranging from 0 ° to 90 °, for example, 45 °.
Referring to fig. 1 again, in the second case, the emission direction of the green light source 110 is the same as the emission direction of the combined beam 101, the emission direction of the blue light source 120 is perpendicular to the emission direction of the combined beam 101, the surface of the beam splitter is plated with a green light transmission film and a blue light reflection film, and the pump light 131 is reflected by the beam splitter to the green light source 110. Similarly, one side of the light splitter faces the blue light source 120, and the other side faces the green light source 110. The beam splitter and the beam combiner 101 are arranged at an included angle ranging from 0 ° to 90 °, for example, 45 °.
Referring to fig. 1 and 3, to facilitate installation of the red light source 20 and the compensated red light source 30, the positions of the red light source 20 and the compensated red light source 30 include two cases.
In the first case, the red light source 20 and the compensation red light source 30 are disposed on the same side of the emission direction of the combined beam 101. In this manner, the opposite side may be mounted with other devices.
In the second case, the red light source 20 and the compensation red light source 30 are disposed on opposite sides of the exit direction of the combined beam light 101. The opposite side positions of the red light source 20 and the compensating red light source 30 are vacant and other devices may be installed. When the red light source 20 and the compensation red light source 30 are disposed on opposite sides of the combined light beam 101, the light source combining system can obtain a sufficient optical path length, thereby ensuring the projection display effect.
In addition, it should be noted that the red light source 20 may be close to the blue-green light source group 10, and the compensation red light source 30 may be far from the blue-green light source group 10. It is also possible that the red light source 20 is remote from the cyan light source group 10, and the complementary red light source 30 is close to the cyan light source group 10.
The present invention further provides a projection lighting system, which includes a plurality of collimator lens sets 50 and the Light source Light combining system as above, wherein Light Emitting Diodes (LEDs) are disposed in the red Light source 20, the red Light compensation source 30 and the blue-green Light source set 10 in the Light source Light combining system, and the collimator lens sets 50 are disposed in the emergent Light paths of the blue-green Light source set 10, the red Light source 20 and the red Light compensation source 30. Referring to fig. 4 and 5, the collimating lens group 50 may include one lens, two lenses, or more than two lenses. For example, the collimator lens group 50 includes two convex lenses. The collimating lens group 50 ensures that the passing light rays are emitted in parallel, so that the light rays are transmitted along the same direction, and the light rays are prevented from being focused on one point or being excessively dispersed. In addition, the light is easy to deform during the propagation process, and the collimating lens group 50 can also complete the shaping effect on the light. When the red light source 20, the compensation red light source 30 and the blue-green light source group 10 use the light emitting diodes as light sources, the light is dispersed, and the parallel emission of the light can be ensured by the collimating lens group 30, so that the light is prevented from being excessively dispersed.
The detailed implementation of the projection lighting system may refer to the embodiment of the light source combining system, which is not described herein.
The utility model also provides projection equipment, which comprises a shell and the projection lighting system, wherein the projection lighting system is arranged on the shell, and the shell can be a half-wrapped projection lighting system or a shell which is wrapped by the projection lighting system. The shell can protect the shadow lighting system and plays a role in water resistance and dust prevention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. A light source light combining system, comprising:
a red light source that emits a first light beam;
a compensated red light source emitting a second light beam;
the blue-green light source group emits combined light, the combined light comprises blue light and green light, and the first light beam, the second light beam and the combined light are converged and combined; and
and the light converging and combining position of the first light beam and the combined light beam is a first position, the light converging and combining position of the second light beam and the combined light beam is a second position, and the total reflection element is arranged at the first position and/or the second position.
2. The light source combining system of claim 1, wherein the total reflecting element is a triangular prism.
3. The light source light combining system according to claim 2, wherein the total reflection element comprises two orthogonal right-angle surfaces and an inclined surface connected to the two right-angle surfaces, one of the right-angle surfaces is disposed facing the red light source or the complementary red light source, and the inclined surface is disposed facing the blue-green light source group;
the combined light of the blue-green light source group is emitted into the total reflection element through the inclined plane and transmits the total reflection element;
the first light beam of the red light source or the second light beam of the compensation red light source enters the total reflection element through the right-angle surface and is totally reflected through the inclined surface.
4. The light source light combining system according to any one of claims 1 to 3, wherein a central main wavelength of the first light beam is λ1The central main wavelength of the second light beam is lambda2，λ1≠λ2。
5. The light source beam combining system according to any one of claims 1 to 3, wherein there are two total reflection elements, one of the total reflection elements is disposed at the first position, and the other of the total reflection elements is disposed at the second position.
6. The light source combining system of any one of claims 1 to 3, wherein the blue-green light source set comprises a blue light source and a green light source, the blue light source emitting blue light, the green light source emitting green light;
and a light splitting sheet is arranged in the emergent direction of the blue light source and the green light source, and the green light and the blue light are converged and combined through the light splitting sheet.
7. The light source combining system of claim 6, wherein the blue-green light source set further comprises a pump light source, a light emitting surface of the pump light source faces the light splitter, the pump light source emits pump light, and the pump light is emitted to the green light source through the light splitter.
8. The light source beam combining system according to claim 7, wherein the emission direction of the blue light source is the same as the emission direction of the combined beam, the emission direction of the green light source is perpendicular to the emission direction of the combined beam, the surface of the beam splitter is coated with a blue light transmission film and a green light reflection film, and the pump light is transmitted through the beam splitter to the green light source;
or the emitting direction of the green light source is the same as that of the combined light, the emitting direction of the blue light source is vertical to that of the combined light, a green light transmission film and a blue light reflection film are plated on the surface of the light splitting sheet, and the pumping light is reflected to the green light source through the light splitting sheet.
9. The light source beam combining system of claim 6, wherein the red light source and the compensating red light source are disposed on the same side of the combined light exit direction;
or the red light source and the compensation red light source are arranged on two opposite sides of the emergent direction of the combined beam.
10. A projection lighting system, characterized in that, the projection device comprises a plurality of collimator lens groups and the light source combination system as claimed in any one of claims 1 to 9, wherein the red light source, the compensation red light source and the blue-green light source in the light source combination system are all provided with light emitting diodes, and the collimator lens groups are arranged in the emergent light path of the blue-green light source group, the red light source and the compensation red light source.
11. A projection device comprising a housing and the projection illumination system of claim 10, the projection illumination system being disposed in the housing.
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| CN202121197936.XU CN215526338U (en) | 2021-05-31 | 2021-05-31 | Light source light combining system, projection lighting system and projection equipment |
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| CN202121197936.XU CN215526338U (en) | 2021-05-31 | 2021-05-31 | Light source light combining system, projection lighting system and projection equipment |
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Effective date of registration: 20221116 Address after: 261031 workshop 1, phase III, Geer Photoelectric Industrial Park, 3999 Huixian Road, Yongchun community, Qingchi street, high tech Zone, Weifang City, Shandong Province Patentee after: GoerTek Optical Technology Co.,Ltd. Address before: 261031 No. 268 Dongfang Road, hi tech Industrial Development Zone, Shandong, Weifang Patentee before: GOERTEK Inc. |
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