Light source system

Abstract

The utility model discloses a light source system which comprises a light source mechanism. A collimating lens group; the fly's-eye lens group is arranged on an emergent light path of the collimating lens group, the fly's-eye lens group comprises a light transmitting area arranged in the center and a light uniformizing area surrounding the light transmitting area, the light uniformizing area is used for uniformizing light beams emitted by the collimating lens group, and the light uniformizing area is used for uniformizing the light beams emitted by the collimating lens group. The light transmitting area is used for transmitting light beams emitted by the collimating lens group; the condensing lens is arranged on an emergent light path of the fly's-eye lens group, and the condensing lens is used for converging emergent light of the fly's-eye lens group and projecting the emergent light to a target plane. According to the light source system, the light transmitting area is arranged in the central area of the fly-eye lens group and the light uniformizing area surrounds the light transmitting area, so that light spot central illumination and uniformity balance is formed on a target plane, and the application range of the light source system is widened.

Description

Technical Field

[0001] The utility model relates to the field of optics, in particular to a light source system. Background Art

[0002] At present, high-power LED light source systems are widely used in stage lights. In the prior art, in order to pursue the uniformity of light output of the light source system, a double compound eye lens is introduced into the light source system for light uniformity. However, the double compound eye lens reduces the illumination of the light output while improving the uniformity of the light source system, resulting in a decrease in the illumination of the light spot of the light output from the light source system, especially the illumination in the center area of ​​the light spot is greatly reduced, which limits the application of LED light source systems in the field of stage lights. Utility Model Content

[0003] The utility model provides a light source system to solve the problem that the illumination at the center of the light spot of the light source system in the prior art is not prominent.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: a light source system, including a light source mechanism, the light source mechanism includes a plurality of array-distributed light-emitting diode chips; a collimating lens group, the collimating lens group is used to collimate the light beam emitted by the light-emitting diode core; a fly-eye lens group, the fly-eye lens group is arranged on the light path of the emitted light of the collimating lens group, wherein the fly-eye lens group includes a light-transmitting area arranged in the center and a light-uniforming area surrounding the light-transmitting area, the light-uniforming area is used to uniform the light beam emitted by the collimating lens group, and the light-transmitting area is used to transmit the light beam emitted by the collimating lens group; a condensing lens, the condensing lens is arranged on the light path of the emitted light of the fly-eye lens group, and the condensing lens is used to converge the light emitted by the fly-eye lens group and project it onto a target plane.

[0005] In one embodiment, the light homogenizing area is a microlens unit disposed on the surface of the fly-eye lens group substrate, and the light-transmitting area is a flat surface of the fly-eye lens group substrate.

[0006] In one embodiment, the fly-eye lens group includes a first fly-eye lens, and the first fly-eye lens includes the light-transmitting area located at the center and the light-homogenizing area surrounding the light-transmitting area.

[0007] In one embodiment, the fly-eye lens group further includes a second fly-eye lens, the second fly-eye lens includes the light-transmitting area located at the center, and the light-homogenizing area surrounding the light-transmitting area, the light-homogenizing area of ​​the second fly-eye lens is arranged correspondingly to the light-homogenizing area of ​​the first fly-eye lens, and the light-transmitting area of ​​the second fly-eye lens is arranged correspondingly to the light-transmitting area of ​​the first fly-eye lens.

[0008] In one embodiment, the light homogenizing area of ​​the second fly-eye lens is the same as the light homogenizing area of ​​the first fly-eye lens, and the light transmission area of ​​the second fly-eye lens is the same as the light transmission area of ​​the first fly-eye lens.

[0009] In one embodiment, the light homogenizing area is a microlens unit disposed on the surface of the fly-eye lens assembly substrate, and the light-transmitting area is a through hole of the fly-eye lens assembly substrate.

[0010] In one embodiment, a light-transmitting material is disposed in the through hole of the fly-eye lens assembly, and the light-transmitting material can adjust the transmittance of light.

[0011] In one embodiment, the uniform light zone is a first microlens unit disposed on the surface of the fly-eye lens group substrate, and the light-transmitting zone is a second microlens unit disposed on the surface of the fly-eye lens group substrate, and the curvature diameter of the first microlens unit is smaller than the curvature diameter of the second microlens unit.

[0012] In one embodiment, the diameter of the light-transmitting area of ​​the fly-eye lens group is 0-60 mm, and the spot uniformity of the light emitted by the light source system is greater than or equal to 70%.

[0013] In one embodiment, the diameter of the light-transmitting area of ​​the fly-eye lens group is 17-47 mm, and the spot uniformity of the light emitted by the light source system is greater than or equal to 75%.

[0014] The beneficial effect of the utility model is that, different from the prior art, the utility model emits multiple light beams through a light source mechanism, and after being collected by a collimating lens group, is incident on a compound eye lens group. Since the compound eye lens group includes a light-transmitting area arranged in a central area and a uniform light area surrounding the light-transmitting area, a balance of central illumination and uniformity of a light spot is achieved on a target plane, thereby improving the application range of the light source system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the light source system provided by the utility model.

[0016] Figure 2 It is a schematic diagram of a first embodiment of a compound eye lens provided by the utility model.

[0017] Figure 3 It is a schematic diagram of a second embodiment of the compound eye lens provided by the utility model.

[0018] Figure 4 It is a schematic diagram of a third embodiment of the compound eye lens provided by the utility model.

[0019] Figure 5 It is a schematic diagram of a fourth embodiment of the compound eye lens provided by the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0022] A light source system comprising

[0023] A light source mechanism, the light source mechanism comprising a plurality of light emitting diode chips distributed in an array;

[0024] A collimating lens group, the collimating lens group is used to collimate the light beam emitted by the light emitting diode core;

[0025] A fly-eye lens group, wherein the fly-eye lens group is arranged on the optical path of the outgoing light of the collimating lens group, wherein the fly-eye lens group includes a light-transmitting area arranged at the center and a light-homogenizing area surrounding the light-transmitting area, the light-homogenizing area is used to homogenize the light beam emitted by the collimating lens group, and the light-transmitting area is used to transmit the light beam emitted by the collimating lens group;

[0026] A condenser lens is arranged on the optical path of the outgoing light of the fly-eye lens group, and is used to converge the outgoing light of the fly-eye lens group and make it incident on a target plane.

[0027] The following describes the invention in conjunction with specific embodiments.

[0028] See also Figure 1 and Figure 2The utility model provides a light source system 100, which includes a light source mechanism 20, which includes a plurality of array-distributed light emitting diode (LED) chips 21; and a collimating lens group 30 on the light path of the light emitted by the plurality of light emitting diode chips 21, wherein the collimating lens group includes at least two collecting lens arrays, each collecting lens array includes a plurality of collimating lens units, each collimating lens unit corresponds to the light emitting diode chip 21, and is used to collimate the light beam emitted by the light emitting diode chip 21; a compound eye (Compound The fly-eye lens group 10 is provided on the light path of the outgoing light of the collimating lens group; the condensing lens 40 is provided on the light path of the outgoing light of the fly-eye lens group 10, and the condensing lens is used to converge the outgoing light of the fly-eye lens group and project it onto the target plane; wherein the fly-eye lens group 10 includes a light-transmitting area arranged at the center and a light-homogenizing area surrounding the light-transmitting area, the light-homogenizing area is a microlens unit arranged on the surface of the fly-eye lens group substrate, and the light-transmitting area is a flat surface or a through hole of the fly-eye lens group substrate.

[0029] The light source mechanism 20 includes a light source substrate, and a plurality of light-emitting diode chips 21 arranged on the light source substrate, wherein the centers of adjacent plurality of light-emitting diode chips 21 are distributed in a regular triangle, a square, or a regular polygon. In one embodiment, the light-emitting diode chip 21 includes a plurality of light-emitting diode chips with the same or different performances, for example, light-emitting diode chips with the same or different colors, light-emitting diode chips with the same or different color temperatures, light-emitting diode chips with the same or different optical powers, or light-emitting diode chips with the same or different color rendering indices.

[0030] like Figure 2As shown, the compound eye lens group 10 of the present invention includes a first compound eye lens 11 and a second compound eye lens 12, wherein the first compound eye lens 11 includes a light-transmitting area 112 located in the center, and a uniform light area 111 surrounding the light-transmitting area. It should be noted that the uniform light area and the light-transmitting area are relative concepts. According to common sense in optics, the uniform light area in the present invention transmits light while uniforming the light. The light transmittance of the light-transmitting area is very large compared to the uniform light area, and the uniform light treatment of the light-transmitting area is relatively small. Further, the uniform light area 111 of the first compound eye lens 11 is a plurality of microlens units arranged on the surface of the substrate, and the light-transmitting area of ​​the first compound eye lens 11 is the flat surface of the substrate, that is, the surface of the substrate is a flat surface that is not optically treated, and the flat surface does not process the characteristics of the light while transmitting the light, that is, the divergence of the light beam can be considered to be unchanged. Further, the second fly-eye lens 12 includes a light-transmitting area 122 located at the center, and a uniform light area 121 surrounding the light-transmitting area. The uniform light area of ​​the second fly-eye lens 12 corresponds to the uniform light area of ​​the first fly-eye lens 11, and the light-transmitting area of ​​the second fly-eye lens 12 also corresponds to the light-transmitting area of ​​the first fly-eye lens 11, that is, the light-transmitting area of ​​the first fly-eye lens 11 and the light-transmitting area of ​​the second fly-eye lens 12 are the same, and the uniform light area of ​​the first fly-eye lens 11 and the uniform light area of ​​the second fly-eye lens 12 are the same. The advantage of this design is that the transmittance and uniform light effect of the outgoing light can be adjusted by controlling the area ratio of the uniform light area and the light-transmitting area, corresponding to the balance of the central illumination and uniformity of the outgoing light of the light source system. It can be understood that in one embodiment, the fly-eye lens group only includes the first fly-eye lens 11, and one fly-eye lens can also achieve the balance of the central illumination and uniformity of the outgoing light of the light source system, but it is not as good as the uniform light effect of two fly-eye lenses.

[0031] In one embodiment, the light-transmitting area of ​​the compound eye lens group can be a rough surface of the substrate, that is, the surface of the substrate is roughened. In this case, the light-transmitting area can not only achieve a light-transmitting effect, but also scatter the light beam, that is, the light-transmitting area has the effect of a scattering sheet. In one embodiment, a scattering sheet can be additionally provided in the light-transmitting area of ​​the compound eye lens group, and the scattering sheet can scatter the light beam to a certain extent.

[0032] Furthermore, since the compound eye lens group 10 is provided with a light transmission area and a uniform light area, when the light beam emitted by the light source mechanism passes through the compound eye lens group, the light beam irradiated on the uniform light area at the edge of the compound eye lens group is uniformly emitted through the compound eye lens group, so that the emitted light spot of the light source system has a better uniformity. The light beam irradiated on the central light transmission area of ​​the compound eye lens group is directly transmitted through the compound eye lens group, that is, the light transmission area does not perform any processing on the light beam and directly transmits it out. At this time, almost all of the light is transmitted, and the transmittance is greater than 90%, so that the illumination of the central area of ​​the emitted light spot of the light source system is higher. In summary, the utility model designs the regional distribution of the compound eye lens group so that the light spot emitted by the entire light source system can take into account the requirements of uniformity and central illumination at the same time, which is convenient for the promotion and application of LED light source systems.

[0033] Table 1 shows the experimental data of the compound eye lens group of the light source system under different light transmission area diameters. It should be noted that, for the operability of the compound eye lens group, the utility model chooses to set a circular light transmission area in the compound eye lens group, and the diameter of the circular light transmission area is r. The light source system represented by Experiment 1 uses the experimental measurement data of the compound eye lens group without setting the light transmission area in the center. At this time, the central illuminance of the light spot emitted by the light source system is 25690 lux, and the corresponding light spot uniformity is 90%. It can be seen that when the compound eye lens group does not have a light transmission area, the light spot uniformity emitted by the light source system is better, but the central illuminance of the light spot is lower at this time, and it can be applied to fields with high requirements for light spot uniformity. The light source system represented by Experiment 2 uses the experimental measurement data when the diameter of the light transmission area is 17mm in the center of the compound eye lens group. At this time, the central illuminance of the light spot emitted by the light source system is 25940 lux, and the corresponding light spot uniformity is 87%. It can be seen that when a smaller light transmission area is set in the center of the compound eye lens group, the uniformity of the light spot emitted by the light source system is reduced, and the central illuminance is improved, but the degradation of the light spot uniformity and the improvement of the illuminance are not obvious, and it can be applied to fields with high requirements for light spot uniformity. The light source system represented by Experiment 3 uses the experimental measurement data when the diameter of the light transmission area is 32mm in the center of the compound eye lens group. At this time, the central illuminance of the light spot emitted by the light source system is 27640 lux, and the corresponding light spot uniformity is 83%. It can be seen that when the light transmission area is set in the center of the compound eye lens group, the uniformity of the light spot emitted by the light source system is reduced, and the illuminance is improved. At this time, the degradation of the light spot uniformity and the improvement of the illuminance are more obvious, and it can be applied to fields with high requirements for both light spot uniformity and illuminance. The light source system represented by Experiment 4 uses the experimental measurement data when the diameter of the light transmission area is 47mm in the center of the compound eye lens group. At this time, the central illuminance of the light spot emitted by the light source system is 31130 lux, and the corresponding light spot uniformity is 75%. It can be seen that when the light transmission area is set in the center of the compound eye lens group, the uniformity of the light spot emitted by the light source system is greatly reduced, and the illuminance is greatly improved, which can be applied to fields with high requirements for light spot illumination. The light source system represented by Experiment 5 uses the experimental measurement data when the diameter of the light transmission area is 60mm in the center of the compound eye lens group. At this time, the central illuminance of the light spot emitted by the light source system is 33081 lux, and the corresponding light spot uniformity is 70%. It can be seen that when the light transmission area is set in the center of the compound eye lens group, the uniformity of the light spot emitted by the light source system is greatly reduced, and the illuminance is greatly improved, which can be applied to fields with high requirements for light spot illumination.

[0034] It can be seen from the above experimental measurement data that the utility model can achieve a balance between the central illumination and uniformity of the light spot of the light emitted by the light source system by arranging a light-transmitting area and a uniform light area in the compound eye lens group, wherein the diameter of the light-transmitting area is 0mm-60mm, and the uniformity of the light spot of the light emitted by the light source system is greater than or equal to 70%; further, when the diameter of the light-transmitting area is preferably 17mm-47mm, the uniformity of the light spot of the light emitted by the light source system is equal to 75%, and the uniformity and illumination of the light spot emitted by the light source system are good.

[0035] Table 1

[0036]

[0037]

[0038] Please continue to refer to Figure 3 As shown, Figure 3 This is the second embodiment of the compound eye lens group of the utility model. The difference between the second embodiment and the first embodiment is that the light-transmitting area of ​​the compound eye lens group in the second embodiment is a through hole, that is, a through hole 104 is opened in the central area of ​​the compound eye lens group. The advantage of this design is that the transmittance of the light beam is higher, and the through hole can achieve almost 100% light transmission. It should be noted that the through hole can increase the transmittance of the light beam, but at the same time it brings the problem of poor sealing effect. Therefore, in one embodiment, a light-transmitting material can be filled in the through hole to achieve the sealing of the compound eye lens group without affecting the light transmittance.

[0039] Continue to refer to Figure 4 As shown, in the third embodiment of the compound eye lens assembly of the utility model, although the through hole can increase the light transmittance, it is unable to dynamically adjust the transmittance change of the light beam, especially for some application scenarios that have high requirements for the illumination and uniformity of a specific area of ​​the light spot, for example, the illumination and uniformity of the central area of ​​the light spot emitted by the light source system also reach a balance, not only to achieve good illumination in the central area of ​​the light spot, but also to achieve good uniformity in the central area. The third embodiment of the compound eye lens assembly can be filled with a light-transmitting material 105 in the through hole, such as Figure 4 As shown, the light-transmitting material 105 can dynamically adjust the transmittance of light, and the light-transmitting material can be an electrochromic material, a color-changing glass, etc. Of course, it can be understood that in one embodiment, the light-transmitting material 105 can also be a material that dynamically adjusts the light beam scattering rate. Further, by dynamically adjusting the transmittance of the light-transmitting material 105, the central area of ​​the light spot emitted by the light source system can not only achieve a large illumination requirement but also achieve a good uniformity requirement, that is, to achieve dynamic modulation of the light spot partition.

[0040] like Figure 5As shown, the fourth embodiment of the fly-eye lens group of the utility model is different from the first embodiment in that the light-transmitting area is not the flat surface of the substrate, and the light-transmitting area is also a plurality of microlens units arranged on the surface of the substrate. Specifically, a light-transmitting area 114 is arranged at the center of the first fly-eye lens 11, and a uniform light area 111 is arranged around the light-transmitting area of ​​the first fly-eye lens 11. The uniform light area 111 is provided with a plurality of first microlens units, and the light-transmitting area 114 is provided with a plurality of second microlens units. The curvature diameter of the first microlens unit is smaller than the curvature diameter of the second microlens unit. It should be noted that the larger the curvature diameter of the microlens unit, the smaller the curvature, and the limit value of the curvature is a plane, the worse the uniform light effect of the microlens unit, the smaller the curvature diameter of the microlens unit, the larger the curvature, and the better the uniform light effect of the microlens unit. In the fourth embodiment, the curvature diameter of the light-transmitting area of ​​the fly-eye lens group is set to be larger than the curvature diameter of the uniform light area, so that the light-transmitting area can also achieve a small uniform light effect during light transmission. Furthermore, a light-transmitting area 124 is provided at the center of the second compound eye lens 12, and a uniform light area 121 is provided around the light-transmitting area of ​​the second compound eye lens 12, a first microlens unit is provided in the uniform light area 121, and a plurality of second microlens units are provided in the light-transmitting area 124, and the curvature diameter of the first microlens unit is smaller than the curvature diameter of the second microlens unit. The fourth embodiment of the utility model can achieve more accurate control of the central brightness and uniformity of the light spot emitted by the light source system by arranging microlens units with different curvature diameters in the uniform light area and the light-transmitting area of ​​the compound eye lens group. It can be understood that the light-transmitting area of ​​the fourth embodiment not only has a high transmittance of the light beam, but also uniforms the light beam to a certain extent, thereby achieving modulation of the regional brightness and uniformity of the light spot emitted by the light source system.

[0041] In summary, in the above embodiments, the utility model emits multiple light beams through a light source mechanism, and after being collected by a collimating lens group, they are incident on a compound eye lens group. Since the compound eye lens group includes a light-transmitting area arranged in the central area and a uniform light area surrounding the light-transmitting area, a balance of the central illumination and uniformity of the light spot is achieved on the target plane, thereby improving the application range of the light source system.

[0042] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent results or equivalent process changes made using the contents of the specification and drawings of the present utility model, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present utility model.

Claims

1. A light source system, characterized in that: include A light source mechanism, the light source mechanism comprising a plurality of light emitting diode chips distributed in an array; A collimating lens group, the collimating lens group is used to collimate the light beam emitted by the light emitting diode core; A fly-eye lens group, wherein the fly-eye lens group is arranged on the optical path of the outgoing light of the collimating lens group, wherein the fly-eye lens group includes a light-transmitting area arranged at the center and a light-homogenizing area surrounding the light-transmitting area, the light-homogenizing area is used to homogenize the light beam emitted by the collimating lens group, and the light-transmitting area is used to transmit the light beam emitted by the collimating lens group; A condenser lens is arranged on the optical path of the outgoing light of the fly-eye lens group, and is used to converge the outgoing light of the fly-eye lens group and project it onto a target plane.

2. The light source system according to claim 1, characterized in that: The light homogenizing area is a microlens unit arranged on the surface of the fly-eye lens group substrate, and the light-transmitting area is a flat surface of the fly-eye lens group substrate.

3. The light source system according to claim 2, characterized in that: The fly-eye lens group includes a first fly-eye lens, and the first fly-eye lens includes the light-transmitting area located at the center and the light-homogenizing area surrounding the light-transmitting area.

4. The light source system according to claim 3, characterized in that: The fly-eye lens group also includes a second fly-eye lens, the second fly-eye lens includes the light-transmitting area located at the center, and the light-homogenizing area surrounding the light-transmitting area, the light-homogenizing area of ​​the second fly-eye lens is arranged correspondingly to the light-homogenizing area of ​​the first fly-eye lens, and the light-transmitting area of ​​the second fly-eye lens is arranged correspondingly to the light-transmitting area of ​​the first fly-eye lens.

5. The light source system according to claim 4, characterized in that: The light homogenizing area of ​​the second fly-eye lens is the same in area as that of the first fly-eye lens, and the light transmission area of ​​the second fly-eye lens is the same in area as that of the first fly-eye lens.

6. The light source system according to claim 1, characterized in that: The light homogenizing area is a microlens unit arranged on the surface of the fly-eye lens group substrate, and the light-transmitting area is a through hole of the fly-eye lens group substrate.

7. The light source system according to claim 6, characterized in that: A light-transmitting material is arranged in the through hole of the fly-eye lens group, and the light-transmitting material can adjust the transmittance of light.

8. The light source system according to claim 1, characterized in that: The uniform light zone is a first microlens unit disposed on the surface of the fly-eye lens group substrate, and the light-transmitting zone is a second microlens unit disposed on the surface of the fly-eye lens group substrate. The curvature diameter of the first microlens unit is smaller than the curvature diameter of the second microlens unit.

9. The light source system according to any one of claims 1 to 8, characterized in that: The diameter of the light transmission area of ​​the fly-eye lens group is 0-60 mm, and the spot uniformity of the light emitted by the light source system is greater than or equal to 70%.

10. The light source system according to claim 9, characterized in that: The diameter of the light transmission area of ​​the fly-eye lens group is 17-47 mm, and the spot uniformity of the light emitted by the light source system is greater than or equal to 75%.

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