Optical system having high brightness, high uniformity and stable output

Abstract

Disclosed in the present invention is an optical system having high brightness, high uniformity and stable output, comprising: at least one light-emitting module (1), wherein the light-emitting module (1) is provided with a bottom plate (11), and a plurality of lamp beads which are distributed on the bottom plate (11) in a matrix; a compression lens group, wherein the compression lens group comprises a first compression lens (2) and a second compression lens (3), both the first compression lens (2) and the second compression lens (3) are provided with collimating lenses which are distributed in a matrix, and light emitted by the lamp beads can be continuously adjusted and compressed by the collimating lenses of the first compression lens (2) and the second compression lens (3) to form a collimated light beam; a light homogenizing lens group, which converts the collimated light beam adjusted by the compression lens group into a homogenized light beam having uniform intensity; and a converging lens (6), which converges the homogenized light beam processed by the light homogenizing lens group into a target range.

Description

Optical system with high brightness, high uniformity and stable output Technical Field

[0001] The present invention relates to the field of optics, and in particular to an optical system with high brightness, high uniformity and stable output. Background Art

[0002] The market's requirements for light sources are increasing year by year. The illuminance distribution of a single or several light-emitting unit devices (such as LEDs) on the receiving surface can no longer meet people's requirements for illumination. The light emitted by such devices without secondary optical processing exhibits the disadvantage of being bright in the center and dark at the edges. Even for light-emitting unit devices such as LED lamp beads, the secondary optical processing unit only uses conventional lenses to compress the divergence angle of the light-emitting unit. The illuminance distribution on the receiving surface still exhibits a cosine distribution with bright center and dark edges. This light energy distribution can no longer meet the ever-increasing lighting requirements of venues.

[0003] Moreover, a large number of optical processing units, such as optical array elements, are required in the optical system. The light emitted by multiple lamp beads is incident on the corresponding optical elements, and these optical elements perform optical processing, such as collimation, etc. respectively. Through the optical array element, unified optical processing of multiple lamp beads can be achieved at the same time. As shown in Figure 7, the optical array element of the prior art adopts a metal substrate 51. A plurality of holes are provided on the metal substrate 51. The optical element 52 is placed in the hole of the metal substrate and fixed by, for example, glue 53. The optical array element of the prior art has the problem of high cost because it adopts a metal substrate. In addition, when installing each optical element into the hole of the metal substrate, it is difficult to achieve a unified installation standard, so the optical performance is poor. Moreover, due to the presence of glue, this will further lead to the deterioration of the performance of the optical array element.

[0004] Summary of the Invention

[0005] Therefore, in view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a new optical system with high brightness, high uniformity and stable output, which can improve the optical performance of the optical system.

[0006] One aspect of the present invention is to provide an optical system with high brightness, high uniformity and stable output, comprising: at least one light-emitting module, the light-emitting module having a base plate and a plurality of lamp beads distributed in a matrix form on the base plate; a compression mirror group, the compression mirror group comprising a first compression mirror and a second compression mirror, the first compression mirror and the second compression mirror both having collimating mirrors distributed in a matrix form, the light emitted by the lamp beads can be continuously adjusted and compressed by the collimating mirrors of the first compression mirror and the collimating mirrors of the second compression mirror to form a collimated light beam; a homogenizing mirror group, which converts the collimated light beam adjusted by the compression mirror group into a homogenized light beam with uniform intensity distribution; and a converging lens, which focuses the homogenized light beam processed by the homogenizing mirror group into a target range.

[0007] In the optical system described above, one or more of the first compression mirror, the second compression mirror and the homogenizing mirror group is an optical array element, which includes a substrate and a plurality of optical elements arranged on the substrate, each optical element includes a light guide portion and a lens portion, the light guide portion and the lens portion are integrally formed, and the light guide portion of each optical element is integrally formed with the substrate.

[0008] In the optical system described above, the compression mirror assembly further comprises: a compression mirror assembly bracket, which is a cylindrical shell; the first compression mirror and the second compression mirror are separated by a compression mirror assembly gasket at a predetermined interval and are placed in the compression mirror assembly bracket.

[0009] In the optical system described above, the light homogenizing mirror group further includes: a first differential mirror, a second differential mirror and a differential mirror group bracket, the differential mirror group bracket is a cylindrical shell; the first differential mirror and the second differential mirror are separated by a predetermined interval by a differential mirror group gasket and are placed in the differential mirror group bracket.

[0010] The optical system as described above also includes: a main body, which is a cylindrical shell, in which the compression lens group and the homogenizing lens group are both installed; the main body also includes a light outlet, in which the converging lens is installed; a pressure cover, which presses the converging lens into the light outlet of the main body, and the pressure cover and the light outlet of the main body are detachable and matched; and a sealing ring, which seals the connection between the pressure cover and the light outlet of the main body.

[0011] In the optical array elements of the optical system as described above, the end face of the light-guiding portion of each optical element away from the lens portion is aligned with the lower bottom surface of the substrate, and the end face of the light-guiding portion of each optical element close to the lens portion is aligned with the upper bottom surface of the substrate; or the end face of the light-guiding portion of each optical element away from the lens portion is concave relative to the lower bottom surface of the substrate; or the end face of the light-guiding portion of each optical element close to the lens portion is convex relative to the upper bottom surface of the substrate.

[0012] In the optical array elements of the optical system as described above, the lens portion of each optical element is hemispherical, and the edges of the lens portions of adjacent optical elements are tangent; or the lens portions of the optical elements are closely arranged with each other, and there is no gap between the lens portions of adjacent optical elements; or the lens portions of the optical elements of the optical array element are irregularly shaped.

[0013] In the optical array element of the optical system as described above, the size of the lens portion of the first compression mirror is smaller than that of the lens portion of the second compression mirror.

[0014] In the optical array element of the optical system described above, the light homogenizing mirror group includes a first differential mirror and a second differential mirror, and the size of the lens portion of the first differential mirror is different from that of the second differential mirror.

[0015] In the optical array element of the optical system as described above, the size of the light guide portion of the optical array element is 2-3 times the size of the lamp bead.

[0016] In the optical system with high brightness, high uniformity and stable output of the present invention, the overall structure is more compact, the utilization rate of incident light energy can reach more than 90%, and the illumination on the receiving surface is higher; the light is homogenized after being collimated twice, and the uniformity of the light spot is higher; the precision requirements for processing and assembly are low, which can greatly reduce costs; at the same time, the lamp bead integrated substrate can be connected to a heat sink, making heat dissipation production easier.

[0017] Moreover, compared with the prior art, the present invention can improve the optical performance of optical array elements. According to the optical array element of the present invention, the light-guiding portion of each optical element is integrally formed with the base, and the individual optical elements can be accurately arranged on a specific plane, thereby improving the optical performance. Moreover, there is no need to fix the optical element to the base with glue, which avoids the influence of glue on the performance of the optical element. Since the light-guiding portion and the lens portion of each optical element are integrally formed, and the light-guiding portion is integrally formed with the base, the cost is also significantly reduced. Moreover, by designing the size of the light-guiding portion of the optical element, the light guiding of the corresponding lamp bead is guaranteed, and at the same time, the influence of the light emitted by the adjacent lamp bead is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of the principle of light compression, homogenization, and convergence in the optical path of the present invention;

[0019] FIG2 is a perspective view of an optical system with high brightness, high uniformity and stable output according to the present invention;

[0020] FIG3 is a side view of FIG2;

[0021] FIG4 is a cross-sectional view in the direction FF in FIG3 ;

[0022] FIG5 is an exploded view of the optical system with high brightness, high uniformity and stable output according to the present invention.

[0023] FIG6 is a physical diagram of the optical system with high brightness, high uniformity and stable output according to the present invention.

[0024] FIG. 7 is a schematic diagram of an optical array element in the prior art.

[0025] FIG. 8 is a schematic diagram of a first embodiment of an optical array element according to the present invention.

[0026] 9a-9c are partial enlarged schematic diagrams of the optical array element according to the present invention.

[0027] FIG. 10 is a schematic diagram of an optical array element according to a second embodiment of the present invention.

[0028] FIG. 11 is a schematic diagram of a third embodiment of an optical array element according to the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to this application.

[0031] As used herein, the term "comprising" may include aspects of "consisting of" and "consisting essentially of. The term "comprising" may also mean "including but not limited to."

[0032] First embodiment

[0033] As described herein, the light-emitting module 1 of an optical system with high brightness, high uniformity, and stable output includes a light-emitting element (which may be, but is not limited to, an LED lamp bead) integrated onto a planar substrate. The following detailed embodiment uses the LED lamp bead as an example of a light-emitting element. The LED lighting element is arranged on a support surface. This support surface is preferably flat.

[0034] The term "LED lamp bead" is used here to refer to any type of solid-state lighting element, including light-emitting diodes, organic light-emitting diodes, laser diodes, etc. LED lamp beads are packaged LEDs, but can also be LED bare cores, which are fixed to a mounting surface such as a printed circuit board (PCB).

[0035] The LED beads can be positioned on the mounting surface in any arrangement and configuration. For example, the light-emitting surfaces of the LED beads can be arranged parallel to the support surface. The LED beads can be rectangular, in particular square, for example. They are arranged regularly spaced, i.e., at equal distances from each other. It is particularly preferred to arrange the LED beads in a matrix configuration, i.e., in at least two rows and at least two columns.

[0036] The optical axis of an LED is the central direction of the light emitted by the lighting element. It is used to describe the direction of light emitted by the LED and to explain the light path.

[0037] The term "collimator" or "collimator element" is a conventional term and refers to an optical element that compresses the light radiation angle, i.e., reduces the aperture angle of the light emitted from the light output end compared to the light received at the light input end. For example, a collimator may include reflective surfaces arranged around the optical axis and / or one or more lenses.

[0038] The first compression mirror 2 and the second compression mirror 3 in the compression mirror assembly each have collimating lenses arranged in a matrix. According to the present invention, the first compression mirror 2 is arranged behind the LED lamp bead 12 along the optical axis. The first compression mirror 2 is a first collimator element, which is arranged behind the LED lamp bead 12 to collimate the light emitted therefrom. The term "behind..." should be understood as meaning that along the optical axis, the light emitted from the LED lamp bead 12 is received by the first collimator element. The collimating lens of the first compression mirror 2 may include a planar light input portion arranged parallel to the light-emitting surface of the corresponding LED lamp bead 12. This allows light emitted from the LED lamp bead 12 to be emitted into the collimating lens of the first compression mirror 2 preferably with no or minimal loss.

[0039] Along the optical axis, the optical system further includes at least one second compression mirror 3 located behind the first compression mirror 2. The second compression mirror 3 also includes a collimator mirror. Preferably, for each first collimator mirror of the first compression mirror 2, the second compression mirror 3 includes a second collimator mirror disposed thereon, and each first collimator mirror has a corresponding second collimator mirror. Light from the LED lamp bead 12 is collimated and adjusted by the first and second collimators to achieve excellent optical performance. Therefore, the light emitted by the LED lamp bead 12 can be continuously adjusted and compressed by the first collimator mirror of the first compression mirror 2 and the second collimator mirror of the second compression mirror 3 to form a collimated beam.

[0040] A homogenizing lens group is placed after the second collimator, which converts the collimated light beam adjusted by the compression lens group into a homogenized light beam with uniform intensity distribution. The homogenizing lenses in the homogenizing lens group do not have to correspond one to one with the previous collimator lenses.

[0041] The overall structure of the optical system in this embodiment is more compact, the utilization rate of incident light energy can reach more than 90%, and the illumination on the receiving surface is higher; through homogenization processing, the uniformity of the light spot is higher; the precision requirements for processing and assembly are lower, which can greatly reduce costs; the heat sink can be connected to the integrated substrate of the lamp bead, making heat dissipation easier to produce.

[0042] Second embodiment

[0043] In this embodiment, the optical system with high brightness, high uniformity and stable output will give specific optical element parameters, as shown in Figure 4. A first compression mirror 2 is placed in front of each lamp bead. The first compression mirror 2 includes a first collimating mirror. The collimating mirror is a spherical mirror with a curvature radius of 4.28 mm and an aperture of 6.71 mm. All the first collimating mirrors are on the same plane and constitute the first compression mirror 2 to perform the first collimation on the light emitted from the lamp bead 12.

[0044] A second compression mirror 3 is placed in front of the first compression mirror 2. A second collimating mirror is placed corresponding to each first collimating mirror. The second collimating mirror is a spherical mirror with a curvature radius of 6.43 mm and an aperture of 8.2 mm. The second collimating mirrors are all on the same plane, forming a second compression mirror 3, which performs a second collimation on the light beam after the first collimation.

[0045] The first collimating lens group and the second collimating lens group can compress the divergence angle of the incident light beam, and can concentrate more than 90% of the incident light energy within the range of 40-70mm, and compress the divergence angle to the range of 10° to 20°. After being homogenized twice by the first homogenizing lens group and the second homogenizing lens group, the uniformity of the light spot is above 0.9.

[0046] In this embodiment, the optical elements in the optical system structure with high brightness, high uniformity and stable output are very compact. Taking the total power of the lamp beads as an example, the illumination at 10 meters can reach more than 10,000 lux, and the uniformity is above 0.9.

[0047] Third embodiment

[0048] In addition to the contents of the aforementioned embodiment, this embodiment is further optimized. The homogenizing mirror assembly includes a first micromirror 4, which is a spherical mirror with a curvature radius of 2.14 mm and an aperture of 3.1 mm. It performs a first homogenization on the collimated light beam. A second micromirror 5 is placed along the optical axis emission direction of the first micromirror 4. The structures of the first micromirror 4 and the second micromirror 5 can be exactly the same. The second micromirror 5 performs a second homogenization on the light beam after the first homogenization. A converging lens 6 is placed behind the second micromirror 5. The converging lens 6 is a plano-convex lens with a curvature radius of 88.65 mm and a diameter of 68 mm.

[0049] The spacing between the first compression mirror 2 and the second compression mirror 3 is 2 mm, the spacing between the second compression mirror 3 and the first differential mirror 4 is 1 mm, and the spacing between the first differential mirror 4 and the second differential mirror 5 is 6 mm. The fixed spacing between these optical components not only allows for heat dissipation but also ensures stable optical performance.

[0050] Fourth embodiment

[0051] In addition to the features described in the previous embodiments, the compression mirror assembly in this embodiment also includes a compression mirror assembly bracket 93 (see Figure 4), which is a cylindrical housing. The first compression mirror 2 and the second compression mirror 3 are separated by a compression mirror assembly gasket 91 at a predetermined distance and are positioned within the compression mirror assembly bracket 93. The compression mirror assembly bracket 93 also separates the LED lamp bead 12 from the first compression mirror 2 by a predetermined distance. Similarly, the uniform light mirror assembly includes a differential mirror assembly bracket 94, also a cylindrical housing. The first differential mirror 4 and the second differential mirror 5 are separated by a differential mirror assembly gasket 92 at a predetermined distance and are positioned within the differential mirror assembly bracket 94. The differential mirror assembly bracket 94 also separates the first differential mirror 4 and the second compression mirror 3 by a predetermined distance. This support maintains these optical components in a fixed position. In particular, at this spacing, the optical system can maintain normal operation, ensuring high brightness, high uniformity, and stable output despite temperature fluctuations or external forces.

[0052] Fifth embodiment

[0053] In addition to the contents of the aforementioned embodiments, this embodiment also includes a main body 82 when considering how to form a stable arrangement, which is a cylindrical shell, and the compression lens group and the homogenizing lens group are both installed in the cylindrical shell; the supporting elements can be advantageously arranged, especially to maintain a predetermined distance between each optical element, and it is necessary to use the main body 82 to limit the optical system as a whole.

[0054] The main body 82 also includes a light outlet, into which the converging lens 6 is mounted. The converging lens 6 is pressed into the light outlet of the main body 82 using a pressure cap 81, and the pressure cap 81 and the main body 82 light outlet are detachably connected, such as by a threaded connection. A sealing ring 83 is preferably used to seal the connection between the pressure cap 81 and the main body 82 light outlet. The sealing ring 83 also has a vibration-damping effect due to its inherent elasticity. Thus, the main body 82 and pressure cap 81, in combination with the light-emitting module 1, maintain a predetermined distance and limit the position of each optical element.

[0055] Sixth embodiment

[0056] In addition to the contents in the aforementioned embodiments, the converging lens 6 in this embodiment is a Fourier lens.

[0057] In LED optical systems, the advantages of Fourier lenses are mainly reflected in the following aspects:

[0058] Focusing ability: The Fourier lens can focus the light emitted by the LED to the required spot size, thereby improving the brightness of the optical system.

[0059] Uniformity: The Fourier lens can evenly distribute the light emitted by the LED, making the brightness uniform across the entire screen and avoiding the problem of uneven light spots.

[0060] Adjustability: The Fourier lens can be adjusted as needed to achieve the best spot distribution effect.

[0061] Stability: Fourier lenses have high stability and can maintain stable performance during long-term use.

[0062] Cost: Compared with other optical components, the cost of Fourier lenses is relatively low, making them suitable for large-scale applications.

[0063] The structures of the first compression mirror 2, the second compression mirror 3, the first differential mirror 4, and the second differential mirror 5 are described in detail below with reference to Figures 8-11. The first compression mirror 2, the second compression mirror 3, the first differential mirror 4, and the second differential mirror 5 can have substantially the same structure. For ease of description, they are collectively referred to as optical array elements below.

[0064] As shown in FIG8 , the optical array element according to the present invention includes a plurality of optical elements 62 and a substrate 61. The optical elements 62 are integrated on the substrate 61. The substrate 61 is made of glass, the same material as the optical elements 62. The left side of FIG8 is a top view of the optical array element, and the right side of FIG8 is a cross-sectional view of the optical array element (the same below).

[0065] Referring to Figures 9a-9c, various embodiments of the relationship between optical element 62 and substrate 61 are disclosed. In the embodiments of the present invention, each optical element 62 comprises a light-guiding portion 621 and a lens portion 622. The light-guiding portion 621 and the lens portion 622 are integrally formed and have identical cross-sections. Light enters from one side of the light-guiding portion 621 and enters the lens portion 622 through the light-guiding portion 621. The lens portion 622 processes the light, such as by collimating or converging it.

[0066] In the present invention, the light guide portion 621 of each optical element 62 is integrally formed with the base 61. As shown in FIG9a , the lower end surface 623 of the light guide portion 621 away from the lens portion 622 is aligned with the lower bottom surface of the base 61, and the upper end surface 624 of the light guide portion 621 close to the lens portion 622 (since the light guide portion 621 and the lens portion 622 are integrally formed, the upper end surface 624 is the connection between the light guide portion 621 and the lens portion 622, the same below) is aligned with the upper bottom surface of the base 61. As shown in FIG9b , the lower end surface 623 of the light guide portion 621 away from the lens portion 622 is not aligned with the lower bottom surface of the base 61, and the upper end surface 624 of the light guide portion 621 close to the lens portion 622 is aligned with the upper bottom surface of the base 61. The lower end surface 623 of the light guide portion 621 away from the lens portion 622 is concave relative to the lower bottom surface of the base 61, forming an inner concave portion, so that the lamp beads can be placed in the inner concave portion. As shown in Figure 9c, the lower end surface 623 of the light guide portion 621, which is away from the lens portion 622, is aligned with the lower bottom surface of the base 61, while the upper end surface 624 of the light guide portion 621, which is closer to the lens portion 622, is not aligned with the upper bottom surface of the base 61. The upper end surface 624 of the light guide portion 621, which is closer to the lens portion 622, is convex relative to the upper bottom surface of the base 61. This layout can meet the needs of specific installation scenarios. The embodiments provided in the present invention are merely illustrative, and other layouts can be adopted according to actual needs.

[0067] In one embodiment of the present invention, the lens portion 622 of the optical element 62 is hemispherical. The lens portion 622 may also be in other shapes according to actual needs.

[0068] In one embodiment of the present invention, the lens portion 622 of each optical element 62 may have uniform optical performance. Alternatively, lens portions 622 with different optical performances may be provided according to actual needs.

[0069] In the first embodiment of the optical array element shown in FIG8 , the lens portion of each optical element 62 is hemispherical, and there is a certain gap between adjacent optical elements 62. In particular, there is a certain gap between the lens portions of adjacent optical elements 62.

[0070] In the second embodiment of the optical array element shown in FIG10 , the lens portion of each optical element 62 is hemispherical. There is no gap between adjacent optical elements 62. In particular, the edges of the lens portions of adjacent optical elements 62 are tangent to each other.

[0071] In the third embodiment of the optical array element shown in FIG11 , the lens portions of the optical element 62 are not in a regular hemispherical shape, but are closely arranged.

[0072] In the embodiment described above, in order to achieve a better light guiding effect, each optical element 62 is aligned with each lamp bead, and the light emitted by the lamp bead is incident on the corresponding optical element 62 respectively. Preferably, the lamp bead is located at the center of the light guiding portion 621 of the optical element 62. Taking into account that the dense arrangement of several lamp beads will affect their luminous effect, heat dissipation function, etc., the lamp beads should be arranged as dispersedly as possible. In order to guide the light emitted by the lamp beads to the lens portion 622 as much as possible and to avoid being affected by the light emitted by adjacent lamp beads as much as possible, the size of the light guiding portion 621 is designed to be 2-3 times the size of the lamp bead. The lens portion 622 of the optical element 62 does not need to meet such conditions. For example, the light guiding portion 621 can be designed to be small at one end and large at the other end, so as to guide the light incident from its small end to the lens portion 622 connected to its large end.

[0073] According to the present invention, all of the first compression mirror 2, the second compression mirror 3, the first differential mirror 4, and the second differential mirror 5 can adopt the structure of the optical array element according to the present invention. Alternatively, only one or more of the first compression mirror 2, the second compression mirror 3, the first differential mirror 4, and the second differential mirror 5 can adopt the structure of the optical array element according to the present invention.

[0074] Furthermore, although the first compression mirror 2, the second compression mirror 3, the first differential mirror 4, and the second differential mirror 5 all employ the structure of the optical array element according to the present invention, their parameters may differ. For example, in the embodiment shown in FIG5 , the spacing between the lens portions of the first compression mirror 2 and the second compression mirror 3 differ, the lens portions also differ in size, and the lens portions may also employ different shapes, materials, and the like. In one embodiment, the lens portion of the first compression mirror 2 is smaller than the lens portion of the second compression mirror 3. Similarly, the first differential mirror 4 and the second differential mirror 5 may employ lens portions of different sizes, shapes, and materials.

[0075] In this specification, the specific features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, without conflicting with each other.

[0076] The above description is merely an implementation example of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An optical system with high brightness, high uniformity and stable output, characterized in that: include: At least one light-emitting module (1), the light-emitting module (1) comprising a base plate (11) and a plurality of lamp beads distributed on the base plate (11) in a matrix form, A compression mirror group, the compression mirror group comprising a first compression mirror (2) and a second compression mirror (3), the first compression mirror (2) and the second compression mirror (3) both having collimating mirrors distributed in a matrix form, the light emitted by the lamp bead can be continuously adjusted and compressed by the collimating mirrors of the first compression mirror (2) and the collimating mirrors of the second compression mirror (3) to form a collimated light beam; The homogenizing mirror group converts the collimated light beam adjusted by the compression mirror group into a homogenized light beam with uniform intensity distribution. The converging lens (6) focuses the homogenized light beam processed by the light homogenizing lens group into a target range.

2. The optical system with high brightness, high uniformity and stable output according to claim 1, characterized in that: One or more of the first compression mirror (2), the second compression mirror (3) and the light homogenizing mirror group are optical array elements, which include a substrate and a plurality of optical elements arranged on the substrate, each optical element includes a light guide portion and a lens portion, the light guide portion and the lens portion are integrally formed, and the light guide portion of each optical element is integrally formed with the substrate.

3. The optical system with high brightness, high uniformity and stable output according to claim 1, characterized in that: The compression lens set also includes: The compression mirror group bracket (93) is a columnar shell; the first compression mirror (2) and the second compression mirror (3) are separated by a compression mirror group gasket (91) at a predetermined interval and are placed in the compression mirror group bracket (93).

4. The optical system with high brightness, high uniformity and stable output according to claim 3, characterized in that: The light homogenizing mirror group further comprises: a first micromirror (4), a second micromirror (5) and a micromirror group bracket (94); the micromirror group bracket (94) is a columnar shell; the first micromirror (4) and the second micromirror (5) are separated by a predetermined interval through a micromirror group gasket (92) and are placed in the micromirror group bracket (94).

5. The optical system with high brightness, high uniformity and stable output according to claim 4, characterized in that: Also includes: The main body (82) is a cylindrical shell, in which the compression lens group and the light homogenizing lens group are both installed; the main body (82) also includes a light outlet, and the converging lens (6) is installed at the light outlet; A pressing cover (81) presses the converging lens (6) into the light outlet of the main body (82), and the pressing cover (81) and the light outlet of the main body (82) are detachably matched; and A sealing ring (83) is provided, wherein the sealing ring (83) is used for sealing at the connection between the pressure cover (81) and the light outlet of the main body (82).

6. The optical system with high brightness, high uniformity and stable output according to claim 2, characterized in that: In the optical array element, The end surface of the light guide portion of each optical element away from the lens portion is aligned with the lower bottom surface of the substrate, and the end surface of the light guide portion of each optical element close to the lens portion is aligned with the upper bottom surface of the substrate; or The end surface of the light-guiding portion of each optical element away from the lens portion is concave relative to the lower bottom surface of the substrate; or The end surface of the light guide portion of each optical element close to the lens portion is convex relative to the upper bottom surface of the base.

7. The optical system with high brightness, high uniformity and stable output according to claim 6, characterized in that: In the optical array element, The lens portion of each optical element is hemispherical, and the edges of the lens portions of adjacent optical elements are tangent; or The lens portions of the optical elements are closely arranged with no gap between the lens portions of adjacent optical elements; or The lens portion of the optical element of the optical array element has an irregular shape.

8. The optical system with high brightness, high uniformity and stable output according to claim 7, characterized in that: The size of the lens portion of the first compression mirror (2) is smaller than that of the lens portion of the second compression mirror (3).

9. The optical system with high brightness, high uniformity and stable output according to claim 8, characterized in that: The light homogenizing mirror group comprises a first micromirror (4) and a second micromirror (5), and the size of the lens portion of the first micromirror (4) is different from that of the second micromirror (5).

10. The optical system with high brightness, high uniformity and stable output according to claim 9, characterized in that: The size of the light-guiding portion of the optical array element is 2-3 times the size of the lamp bead.

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