Optical array element and optical system
By forming the light guide part with the substrate in the optical array element and designing the shape of the light guide part and the lens part, the problems of high cost and poor performance of the optical array element in the prior art are solved, and more efficient optical performance and lower costs are achieved.
Patent Information
- Application Number
- CN202422466458.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-10-11
AI Technical Summary
Due to the use of metal substrates, existing optical array elements have problems such as excessive cost and poor optical performance, and the presence of glue will affect performance.
A substrate and an optical element integrated on the top are adopted. Each optical element includes a light guide portion and a lens portion. The light guide portion is integrally formed with the substrate to avoid the use of glue, and optical performance is improved by designing the size of the light guide portion and the shape of the lens portion.
Improves the optical performance of optical array elements, reduces costs, and avoids the negative impact of glue on performance.
Smart Images
Figure CN222866900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of optics, in particular to an optical array element and an optical system comprising the optical array element. Background Art
[0002] At present, optical array elements are commonly used in the field of optics. Optical array elements are components made by integrating multiple optical elements on a substrate. The light emitted by multiple lamp beads is incident on the corresponding optical elements, and these optical elements perform optical processing, such as collimation, respectively. Through optical array elements, unified optical processing of multiple lamp beads can be achieved at the same time.
[0003] like Figure 1 As shown, the optical array element of the prior art uses a metal substrate 51. A plurality of holes are provided on the metal substrate 51. Optical elements 52 are placed in the holes of the metal substrate and fixed by, for example, glue 53.
[0004] The optical array element of the prior art has the problem of high cost because it uses a metal substrate. In addition, it is difficult to achieve a unified installation standard when installing each optical element into the hole of the metal substrate, so the optical performance is poor. Moreover, due to the presence of glue, this will further cause the performance of the optical array element to deteriorate. Utility Model Content
[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 type of optical array element, which can improve the optical performance of the optical array element.
[0006] One aspect of the utility model is to provide an optical array element for optically processing light emitted by a light bead, characterized in that it comprises: a substrate and a plurality of optical elements arranged on the substrate, each optical element is aligned with a corresponding light bead, each optical element comprises a light guide portion and a lens portion, the light guide portion and the lens portion are integrally formed, the light guide portion of each optical element is integrally formed with the substrate, and the size of the light guide portion is 2-3 times the size of the light bead. .
[0007] In the optical array element as described above, the end face 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 face of the light guide portion of each optical element close to the lens portion is aligned with the upper bottom surface of the substrate.
[0008] In the optical array element as described above, the end surface of the light guide portion of each optical element, which is away from the lens portion, is recessed relative to the lower bottom surface of the substrate.
[0009] In the optical array element as described above, 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 substrate.
[0010] In the optical array element as described above, the lens portion of each optical element is hemispherical, and there is a certain gap between the lens portions of adjacent optical elements.
[0011] In the optical array element 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 to each other.
[0012] In the optical array element as described above, the lens portions of the optical elements of the optical array element are closely arranged with no gap between the lens portions of adjacent optical elements.
[0013] In the optical array element as described above, the lens portion of the optical element of the optical array element has an irregular shape.
[0014] Another aspect of the present invention is an optical system, comprising a light source, a first collimator lens group, a second collimator lens group and a first homogenizer lens group arranged in sequence, characterized in that one or more of the first collimator lens group, the second collimator lens group and the first homogenizer lens group are optical array elements according to the present invention.
[0015] The optical system as described above further includes a second light homogenizing lens group and / or a converging lens.
[0016] Compared with the prior art, the optical performance of the optical array element can be improved by the utility model. According to the optical array element of the utility model, the light guide portion of each optical element is integrally formed with the substrate, and each optical element 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 substrate with glue, thereby avoiding the influence of glue on the performance of the optical element. Since the light guide portion and the lens portion of each optical element are integrally formed, and the light guide portion is integrally formed with the substrate, the cost is also significantly reduced. Moreover, by designing the size of the light guide portion of the optical element, the light guiding of the corresponding light bead is guaranteed, and at the same time, the influence of the light emitted by the adjacent light bead is avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of an optical array element in the prior art.
[0018] Figure 2 FIG. 4 is a schematic diagram of a first embodiment of an optical array element according to the present invention.
[0019] Figure 3a-3c It is a partially enlarged schematic diagram of the optical array element according to the utility model.
[0020] Figure 4 FIG. 4 is a schematic diagram of a second embodiment of an optical array element according to the present invention.
[0021] Figure 5 It is a schematic diagram of a third embodiment of the optical array element according to the present utility model.
[0022] Figure 6 It is a schematic diagram of an optical system according to the utility model. DETAILED DESCRIPTION
[0023] like Figure 2 As shown, the optical array element according to the present invention comprises 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, which is the same material as the optical elements 62. Figure 2 The left side view in FIG. 1 is a top view of the optical array element. Figure 2 The right side view is a cross-sectional view of the optical array element (the same below).
[0024] See also Figure 3a-3c , which discloses multiple embodiments of the relationship between the optical element 62 and the substrate 61. In the solution according to the utility model, each optical element 62 includes a light guide portion 621 and a lens portion 622. The light guide portion 621 and the lens portion 622 are integrally formed, and the cross-sections of the two are the same. Light is incident from one side of the light guide portion 621, and enters the lens portion 622 through the light guide of the light guide portion 621. The lens portion 622 processes the light, such as collimating and converging.
[0025] In the present invention, the light guide portion 621 of each optical element 62 is integrally formed with the base 61. Figure 3a As shown, 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. Figure 3b As shown, 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, and forms a concave portion, so that the lamp beads can be placed in the concave portion. Figure 3cAs shown, 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 is not aligned with the upper bottom surface of the base 61. The upper end surface 624 of the light guide portion 621 close to the lens portion 622 is convex relative to the upper bottom surface of the base 61. Such a layout can meet the needs of specific installation occasions. The embodiments given in the utility model are only examples, and other layouts can be adopted according to actual needs.
[0026] 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.
[0027] In one embodiment of the present invention, the lens portion 622 of each optical element 62 may have uniform optical performance, or lens portions 622 with different optical performances may be provided according to actual needs.
[0028] exist Figure 2 In the first embodiment of the optical array element shown, 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.
[0029] exist Figure 4 In the second embodiment of the optical array element shown, the lens portion of each optical element 62 is hemispherical, and there is no gap between adjacent optical elements 62. In particular, the edges of the lens portions of adjacent optical elements 62 are tangent.
[0030] exist Figure 5 In the third embodiment of the optical array element shown, the lens portion of the optical element 62 is not a regular hemispherical shape. The lens portions of the optical element 62 are closely arranged.
[0031] In the embodiment described above, in order to achieve a better light guiding effect, each optical element 62 is aligned with each light bead, and the light emitted by the light bead is incident on the corresponding optical element 62 respectively. Preferably, the light bead is located at the center of the light guiding portion 621 of the optical element 62. Considering that the dense arrangement of several light beads will affect their luminous effect, heat dissipation function, etc., the light beads should be arranged as dispersedly as possible. In order to guide the light emitted by the light beads to the lens portion 622 as much as possible and to avoid being affected by the light emitted by adjacent light beads as much as possible, the size of the light guiding portion 621 is designed to be 2-3 times the size of the light 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.
[0032] Figure 6An embodiment of an optical system according to the utility model is disclosed. In the optical system, the first embodiment comprises a light emitting device 1, a first collimating lens group 2, a second collimating lens group 3, a first light homogenizing lens group 4, a second light homogenizing lens group 5 and a converging lens 6 which are arranged in sequence.
[0033] The light-emitting device 1 includes a plurality of LED lamp beads arranged on a substrate. A first collimator group 2 is placed in front of the light-emitting device 1. The first collimator group 2 includes a plurality of first collimators 21. Each LED lamp bead of the light-emitting device 1 corresponds to each first collimator 21 of the collimator group 2. All the first collimators 21 are on the same plane, forming a first collimator group, which performs a first collimation on the light emitted from the LED lamp beads. The first collimator 21 can be a spherical mirror. When the first collimator 21 is a spherical mirror, the radius of curvature is preferably 4.28 mm, and the caliber is preferably 6.71 mm.
[0034] The second collimator group 3 is placed behind the first collimator group 2. The second collimator group 3 includes a plurality of second collimators 31. A second collimator 31 of the second collimator group 3 is placed corresponding to each first collimator 21 of the first collimator group 2. The second collimators 31 are all on the same plane, forming the second collimator group 3, and performing a second collimation on the light beam after the first collimation. The second collimator 31 can be a spherical mirror. When the second collimator 31 is a spherical mirror, the radius of curvature is preferably 5.43 mm, and the caliber is preferably 8.2 mm.
[0035] A first homogenizing mirror group 4 is placed after the second collimating mirror group 3. The first homogenizing mirror 41 of the first homogenizing mirror group 4 does not have to correspond one-to-one with the previous collimating mirror. The first homogenizing mirror group 4 performs the first homogenization on the collimated light beam. The first homogenizing mirror group 41 can be a spherical mirror. When the first homogenizing mirror group 41 is a spherical mirror, the radius of curvature is preferably 2.14 mm, and the caliber is preferably 3.1 mm. A second homogenizing mirror group 5 is placed after the first homogenizing mirror group 4. The structure of the second homogenizing mirror of the second homogenizing mirror group 5 can be exactly the same as that of the first homogenizing mirror 41, and the light beam after the first homogenization is homogenized for the second time. A converging lens 6 is arranged after the second homogenizing mirror group 5.
[0036] The spacing between the first collimator lens group 2 and the second collimator lens group 3 is preferably 2 mm, the spacing between the second collimator lens group 3 and the first homogenizer lens group 4 is preferably 1 mm, and the spacing between the first homogenizer lens group 4 and the second homogenizer lens group 5 is preferably 6 mm. The first collimator lens group 2 and the second collimator lens group 3 can compress the divergence angle of the incident light beam, and can concentrate more than 80% of the incident light energy within the range of 40-70 mm, and compress the divergence angle within the range of 10°-20°. After being homogenized twice by the first homogenizer lens group 4 and the second homogenizer lens group 5, the uniformity of the light spot is above 0.8.
[0037] In such Figure 6 In the optical system according to the present invention shown, one or more of the first collimating lens group 2, the second collimating lens group 3, the first light homogenizing lens group 4 and the second light homogenizing lens group 5 can adopt the optical array element according to the present invention disclosed in the above embodiments.
[0038] In this specification, the specific features, mechanisms, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradicting each other.
[0039] The above description is only 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 array element for optically processing light emitted by a light bead, characterized in that include: A substrate and a plurality of optical elements arranged on the substrate, each optical element is aligned with a corresponding light bead, each optical element comprises a light guide portion and a lens portion, the light guide portion and the lens portion are integrally formed, the light guide portion of each optical element is integrally formed with the substrate, and the size of the light guide portion is 2-3 times the size of the light bead.
2. The optical array element according to claim 1, wherein: 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.
3. The optical array element according to claim 1, wherein: The end surface of the light guide portion of each optical element away from the lens portion is concave relative to the lower bottom surface of the substrate.
4. The optical array element according to claim 1, wherein: 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.
5. The optical array element according to any one of claims 1 to 4, characterized in that: The lens portion of each optical element is hemispherical, and there is a certain gap between the lens portions of adjacent optical elements.
6. The optical array element according to any one of claims 1 to 4, characterized in that: The lens portion of each optical element is hemispherical, and edges of the lens portions of adjacent optical elements are tangent to each other.
7. The optical array element according to any one of claims 1 to 4, characterized in that: The lens portions of the optical elements of the optical array element are closely arranged with no gap between the lens portions of adjacent optical elements.
8. The optical array element according to claim 7, characterized in that: The lens portion of the optical element of the optical array element has an irregular shape.
9. An optical system, comprising a light source, a first collimator lens group, a second collimator lens group and a first light homogenizer lens group arranged in sequence, characterized in that: One or more of the first collimating lens group, the second collimating lens group and the first light homogenizing lens group is an optical array element as described in any one of claims 1 to 8.
10. The optical system according to claim 9, characterized in that It further includes a second light homogenizing lens group and / or a converging lens.