Optical module, optical system and luminaire

Abstract

The application provides an optical module, comprising a main body part, wherein a first lens part, a second lens part and a third lens part are arranged on the main body part, the first lens part, the second lens part and the third lens part are distributed in a delta relationship, the first lens part, the second lens part and the third lens part are each provided with a lens main body, the lens main body is provided with an outlight surface, and the outlight surface is provided with a microstructure unit. The optical module limits the relative positions and distances among different lenses, so that the light emitted by the lenses meets the delta distribution, the best light mixing effect is achieved, the light intensity is uniform, and the color mixing is uniform, and the light emitting effect is controlled through the microstructure unit. In addition, the application further provides an optical module and a lamp.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting lamp light control, and in particular to an optical module, an optical system and a lamp. BACKGROUND

[0002] With the continuous upgrading of the lighting industry, there are significant differences in the requirements of lighting effects of lamps in various application fields. For example, compared with daily lighting, projectors have higher requirements for wide color gamut and uniform mixing of light in application fields such as photography and exhibition. At present, RGB three-color or RGBW four-color mixing technology is commonly used on the market to meet the requirements of wide color gamut. However, the current commercial lamps are still limited in light mixing control.

[0003] The existing RGB three-color or RGBW four-color light source mixing has universal problems. For example, the traditional lens mixing arrangement is commonly used, and the lens arrangement is random, or the number of RGBW light sources is not fixed, and the mixing effect is poor. In addition, there is no regularity in the direction of the light of the RGBW light source when mixing, resulting in uneven mixing. The above problems have adverse effects on the light output effect of the lamp.

[0004] In summary, how to provide an optical system with uniform mixing and scientific lens arrangement is a problem that needs to be solved by existing field technicians. SUMMARY

[0005] In order to solve the above problems existing in the prior art, the present application provides an optical module, which is provided with a plurality of lenses, and the distance between the lenses meets the delta relationship, so that the light emitted by the plurality of lenses can be fully mixed, and finally the light output effect of uniform light intensity and uniform color mixing is realized. In addition, the present application also provides an optical system and a lamp.

[0006] In order to achieve the above purpose, the present application provides the following technical solutions:

[0007] An optical module, comprising a main body portion, a first lens portion, a second lens portion and a third lens portion are provided on the main body portion, the first lens portion, the second lens portion and the third lens portion are distributed in a delta relationship; the first lens portion, the second lens portion and the third lens portion are each provided with a lens main body, the lens main body is provided with an light emitting surface, and the light emitting surface is provided with a microstructure unit.

[0008] Preferably, a center connecting the second lens part and the third lens part forms a line X, a line passing through the center of the first lens part and perpendicular to the line X is a line Y, a projection length of a line connecting the center of the first lens part and the center of the second lens part on the line Y is A, a distance between the center of the second lens part and the center of the third lens part is B, and a projection length of a line connecting the center of the first lens part and the center of the third lens part on the line Y is C, when the first lens part, the second lens part and the third lens part meet a delta relationship, the values of A, B and C meet the following formula:

[0009] B2=4A·C.

[0010] Preferably, the B is 27mm, and the A and the C are 13.5mm.

[0011] Preferably, the microstructure units form a first microstructure layer and a second microstructure layer, and the light emitting surface is provided with the first microstructure layer or the second microstructure layer.

[0012] Preferably, the first microstructure layer is provided with a first array area and a second array area, and the second array area surrounds the periphery of the first array area; the microstructure units in the first array area have a structure larger than the microstructure units in the second array area.

[0013] Preferably, the microstructure units of the second microstructure layer are provided with a first light control surface and a second light control surface.

[0014] Preferably, the lens body is provided with a mounting groove, and a light source assembly is mounted in the mounting groove.

[0015] The application also provides an optical system comprising the optical module.

[0016] Preferably, the lens bodies between adjacent optical modules are distributed in a delta relationship.

[0017] The application also provides a lamp provided with the optical module or the optical system.

[0018] Based on the above technical solutions, the application achieves the following technical effects:

[0019] (1) Multiple lenses are arranged scientifically to achieve uniform mixing of light. According to the principle of mixing white light by RGB three-primary color light source lenses, and combining with the lighting effect of a lamp meeting a delta distribution in an ideal state, the application limits the relationship between the positions and distances of multiple lenses in an optical module, so that the light emitted by the multiple lenses in the same optical module can be fully mixed, has the same illumination effect in different directions, and meets the illumination requirements of a spotlight.

[0020] (2) Different light distribution angle corresponding to the high spot similarity. The application changes the light distribution angle by changing the structure of the microstructure layer on the light emitting surface under the premise of limiting different lens positions and distances. With the increase of the light distribution angle, the three-dimensional morphology and / or arrangement of the microstructure in the microstructure layer changes to ensure high spot similarity under different light distribution angles. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of the optical module of the application from a certain angle.

[0022] Figure 2 Structure diagram of the optical module of the application from another angle.

[0023] Figure 3 is a structure diagram of different microstructure layers of the application.

[0024] Figure 4 Light processing diagram of different microstructure layers of the application.

[0025] Figure 5 is a light distribution curve diagram of different microstructure layers of the application.

[0026] Figure 6 Structure diagram of the optical system of the application.

[0027] Explanation of reference signs:

[0028] 100 optical module, 200 optical system, 1 main body, 11 first lens part, 12 second lens part, 13 third lens part, 2 lens main body, 21 light emitting surface, 22 microstructure unit, 23 mounting groove, 3 light source assembly, 4 first microstructure layer, 41 first array area, 42 second array area, 5 second microstructure layer, 51 first light control surface, 52 second light control surface. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the application, the application will be described more fully below with reference to the accompanying drawings and specific embodiments. The preferred embodiments of the application are shown in the drawings. However, the application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the application more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used for convenience of description and simplification of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0034] Embodiment 1

[0035] Figure 1 And Figure 2 The structural schematic diagram of one view and another view of the optical module 100 of the present embodiment is respectively shown, and the structural schematic diagram of different microstructure layers is shown in FIG. 3. It is referred to in combination with Figure 1 and FIG. 3, an optical module 100, comprising a main body part 1, the main body part 1 is provided with three lens parts meeting the delta relationship, the delta relationship gives the limitation to the distance and position between the lens parts, so that the light emitted can be fully mixed to meet the lighting effect required by the light projector or wall washing lamp.

[0036] Specifically, the main body part 1 is provided with a first lens part 11, a second lens part 12 and a third lens part 13 distributed in a triangular shape. The second lens part 12 and the third lens part 13 are symmetrically arranged on the two sides of the first lens part 11. The first lens part 11, the second lens part 12 and the third lens part 13 all comprise a lens main body 2. The upper end of the lens main body 2 is provided with a light emitting surface 21, and the light emitting surface 21 is provided with a plurality of microstructure units 22.

[0037] As Figure 2As shown, the center line X connecting the second lens part 12 and the third lens part 13, a line Y passing through the center of the first lens part 11 and perpendicular to the line X, the projection length of the line connecting the center of the first lens part 11 and the second lens part 12 on the line Y is A, the distance between the center of the second lens part 12 and the third lens part 13 is B, and the projection length of the line connecting the center of the first lens part 11 and the third lens part 13 on the line Y is C. In the equation Ax 2 +Bx+C=0, let △=B 2 -4AC. When △=0, the equation has only one real root, that is, there is only one solution. Therefore, when the first lens part 11, the second lens part 12 and the third lens part 13 meet the delta relationship, that is, the values of A, B and C meet the following formula: B 2 =4A·C, the different color light of the optical module 100 is uniformly mixed, the light intensity is uniformly distributed, and the light meets the delta distribution.

[0038] The delta function is equal to zero at all points except zero, and the integral of the delta function over the entire domain is equal to 1. Strictly speaking, the delta function is not a function. Because there is no function that meets the above conditions. However, it can be explained by the concept of distribution, that is, the delta distribution. The general probability density function has a probability of 0 at any specific point, while the delta distribution has a probability at a specific point. The ideal mirror reflection material and the ideal glass light emission effect meet the delta distribution because they have only one or two possible emission directions. One is a direct light spot, that is, the light spot plane is parallel to the light emitting plane; the other is a wall washing light spot, that is, the light spot plane is perpendicular to the light emitting plane.

[0039] Returning to Figure 2 , the lens body 2 of the first lens part 11, the second lens part 12 and the third lens part 13 and the diameter of the light emitting surface 21 on the lens body 2 are the same. In this embodiment, the distance B is preferably 27mm, and the projection lengths A and C are preferably 13.5mm. In some embodiments, the lengths A, B and C can be increased or decreased accordingly under the premise of meeting the delta relationship. The light emitted by the first lens part 11, the second lens part 12 and the third lens part 13 after position limiting can be fully mixed, so that the optical module 100 obtains excellent light emission effect and meets the illumination requirements of the projection lamp.

[0040] Further, a plurality of closely arranged microstructure units 22 are arranged on the light emitting surface 21. In order to meet the different light intensity distribution requirements of the projection lamp, the microstructure units 22 form a first microstructure layer 4 and a second microstructure layer 5 according to different structures. The light emitting surface 21 is provided with the first microstructure layer 4 or the second microstructure layer 5.

[0041] Figure 4Fig. 5 respectively shows the schematic diagram of light processing of different microstructure layers and the corresponding light distribution curve. As shown in Fig. 5(a), the lens body 2 is provided with a mounting groove 23 at the lower end thereof, and the light source assembly 3 is mounted in the mounting groove 23. The light source assembly 3 usually includes red, green and blue light beads to achieve RGB three-color mixing light effect, or includes red, green, blue and white light beads to achieve RGBW four-color mixing light effect. In the embodiment, the lens body 2 is provided with four light beads of different colors to achieve RGBW four-color mixing light and wide color gamut effect. The light emitted by the light source assembly 3 passes through the lens body 2 and is mixed uniformly under the action of the microstructure units 22 of the light exit surface 21. Figure 4 As shown in Fig. 2, the lower end of the lens body 2 is recessed towards the light exit surface 21 to form a mounting groove 23, and the light source assembly 3 is mounted in the mounting groove 23. The light source assembly 3 usually includes red, green and blue light beads to achieve RGB three-color mixing light effect, or includes red, green, blue and white light beads to achieve RGBW four-color mixing light effect. In the embodiment, the lens body 2 is provided with four light beads of different colors to achieve RGBW four-color mixing light and wide color gamut effect. The light emitted by the light source assembly 3 passes through the lens body 2 and is mixed uniformly under the action of the microstructure units 22 of the light exit surface 21.

[0042] Specifically, Figure 3A and Figure 4 Fig. 5 respectively shows the schematic diagram of light processing of different microstructure layers and the corresponding light distribution curve. As shown in Fig. 5(a), the lens body 2 is provided with a mounting groove 23 at the lower end thereof, and the light source assembly 3 is mounted in the mounting groove 23. The light source assembly 3 usually includes red, green and blue light beads to achieve RGB three-color mixing light effect, or includes red, green, blue and white light beads to achieve RGBW four-color mixing light effect. In the embodiment, the lens body 2 is provided with four light beads of different colors to achieve RGBW four-color mixing light and wide color gamut effect. The light emitted by the light source assembly 3 passes through the lens body 2 and is mixed uniformly under the action of the microstructure units 22 of the light exit surface 21. Figure 5A As shown in Fig. 5(a), the lens body 2 is provided with a mounting groove 23 at the lower end thereof, and the light source assembly 3 is mounted in the mounting groove 23. The light source assembly 3 usually includes red, green and blue light beads to achieve RGB three-color mixing light effect, or includes red, green, blue and white light beads to achieve RGBW four-color mixing light effect. In the embodiment, the lens body 2 is provided with four light beads of different colors to achieve RGBW four-color mixing light and wide color gamut effect. The light emitted by the light source assembly 3 passes through the lens body 2 and is mixed uniformly under the action of the microstructure units 22 of the light exit surface 21.

[0043] Figure 3C and Figure 4 Fig. 5 respectively shows the schematic diagram of light processing of different microstructure layers and the corresponding light distribution curve. As shown in Fig. 5(a), the lens body 2 is provided with a mounting groove 23 at the lower end thereof, and the light source assembly 3 is mounted in the mounting groove 23. The light source assembly 3 usually includes red, green and blue light beads to achieve RGB three-color mixing light effect, or includes red, green, blue and white light beads to achieve RGBW four-color mixing light effect. In the embodiment, the lens body 2 is provided with four light beads of different colors to achieve RGBW four-color mixing light and wide color gamut effect. The light emitted by the light source assembly 3 passes through the lens body 2 and is mixed uniformly under the action of the microstructure units 22 of the light exit surface 21.Figure 5C as shown.

[0044] The microstructure layer of the optical module 100 is one of the first microstructure layer 4 and the second microstructure layer 5, which can be selected according to the target illumination effect in actual application.

[0045] It is particularly noted that, as shown in FIG. 5, the light distribution curves of different microstructure layers are similar, that is, different microstructure layers change the light distribution angle while retaining the similarity of the light spot. Taking the wall washer lamp using the optical module 100 as an example, when the target illumination effect is that there is a little more red light at the bottom of the optical module 100 and the wall surface, the effects of the same lamp at different light distribution angles are highly similar, and the relative position of the red light does not change.

[0046] In summary, the optical module 100 provided in the embodiment limits the positions and distances between different lens parts, scientifically arranges different lens parts, and makes the light emitted by different lens parts fully mixed and conform to the delta distribution, thereby achieving the light mixing effect. In addition, different microstructure layers ensure the similarity of the light spot in the case of realizing different light distribution angles, thereby increasing the diversity of the illumination effect.

[0047] Embodiment 2

[0048] The embodiment further supplements the embodiment 1, and the first microstructure layer 4 and the second microstructure layer 5 have other implementation manners.

[0049] Figure 3B and Figure 4 FIGS. 5 and 6 respectively show a structure schematic diagram and a light processing schematic diagram of another first microstructure layer 4. The other first microstructure layer 4 is also provided with the first array area 41 and the second array area 42, and the second array area 42 surrounds the periphery of the first array area 41. In the embodiment, the microstructure unit 22 is slightly protruding compared with the microstructure unit 22 of the first microstructure layer 4 in the embodiment 1. The light emitted by the light source assembly 3 in the mounting groove 23 is incident to the inside of the lens body 2 in a radial manner. The radial light is emitted to the light exit surface 21 in a collimated light manner under the reflection of the lens body 2. When the light passes through the light exit surface 21, the light located in the first array area 41 is emitted in the original direction of the collimated light, and the light located in the second array area 42 is inclined away from the direction of the first array area 41, and the whole forms a light beam with a light distribution angle of 30°, and the light distribution curve is as shown in FIG. 6. Figure 5B as shown.

[0050] Figure 3D and Figure 4D respectively show a structure diagram and a ray processing diagram of another second microstructure layer 5. The microstructure unit 22 of the another second microstructure layer 5 is provided with a first light control surface 51 and a second light control surface 52. The first light control surface 51 and the second light control surface 52 are both arc surfaces. The height of the microstructure unit 22 of the second microstructure layer 5 of the present embodiment is greater than that of the microstructure unit 22 of the second microstructure layer 5 of the first embodiment. Thus, when the collimated light passes through the another second microstructure layer 5, the light located in the middle part of the second microstructure layer 5 exits in the original direction of the collimated light, and the rest of the light is further inclined away from the center of the light exit surface 21, and the whole forms a light beam with a distribution angle of 60°, and the distribution curve is as shown in Figure 5D

[0051] It should be noted that the structure and arrangement of the microstructure unit 22 are not limited to the first microstructure layer 4 and the second microstructure layer 5 of the first embodiment and the second embodiment. The microstructure unit 22 is arranged in a Fermat spiral as a whole. As the target distribution angle increases, the height of the microstructure unit 22 also increases. The microstructure unit 22 can be changed according to the target distribution angle.

[0052] Embodiment 3

[0053] Figure 6 A structure diagram of the optical system 200 of the present embodiment is provided. As shown in Figure 6 , the present embodiment provides an optical system 200 including four optical modules 100. Among them, the main body part 1 of the optical module 100 is approximately triangular. The four optical modules 100 are closely spliced to form an optical system 200 with a square structure as a whole.

[0054] In particular, as shown in Figure 6 , in the middle part of the optical system 200, the centers of the lens parts of any three adjacent optical modules 100 are connected, and it can be known that the lens parts between any three adjacent optical modules 100 meet the delta relationship distribution, thereby further improving the mixing light effect of the whole optical system.

[0055] Of course, the shape of the main body part 1, the splicing method and shape between the optical modules 100 are not limited here. In actual production, the optical modules 100 can be spliced according to needs to form a corresponding optical system 200. In addition, the number of optical modules 100 in the optical system 200 is not limited here. A plurality of optical modules 100 can be formed into a larger optical system 200 according to needs.

[0056] Embodiment 4

[0057] ​The embodiment provides a lamp, such as a spotlight, which comprises the optical module 100 provided in the embodiment 1 or the optical system 200 provided in the embodiment 2, and is provided with a shell, a power supply and other components. Under the action of the optical module 100, the lamp can sufficiently mix the outgoing light. Meanwhile, different light distribution effects can be realized under the condition of ensuring similar light spot effects by replacing the optical module 100 with different microstructure layers.

[0058] The above merely illustrates and describes the structure of the present application, and the description is relatively specific and detailed, but should not be understood as limiting the patent scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these obvious replacement forms all belong to the protection scope of the present application.

Claims

1. An optical module, characterized by comprising: The optical module comprises a main body, a first lens part, a second lens part and a third lens part are arranged on the main body, and the first lens part, the second lens part and the third lens part are distributed in a delta relationship; the first lens part, the second lens part and the third lens part are each provided with a lens main body, the lens main body is provided with a light emitting surface, and the light emitting surface is provided with a microstructure unit; A line X is formed by connecting the centers of the second lens part and the third lens part, a line Y is a line passing through the center of the first lens part and perpendicular to the line X, the projection length of the line connecting the centers of the first lens part and the second lens part on the line Y is A, the distance between the centers of the second lens part and the third lens part is B, and the projection length of the line connecting the centers of the first lens part and the third lens part on the line Y is C; when the first lens part, the second lens part and the third lens part meet the delta relationship, the values of A, B and C meet the following formula: B 2 = 4A*C.

2. The optical module according to claim 1, wherein The B is 27 mm, and the A and the C are 13.5 mm.

3. The optical module according to claim 1, wherein The microstructure unit forms a first microstructure layer and a second microstructure layer, and the light emitting surface is provided with the first microstructure layer or the second microstructure layer.

4. The optical module according to claim 3, wherein The first microstructure layer is provided with a first array area and a second array area, and the second array area surrounds the periphery of the first array area; the structure of the microstructure unit in the first array area is larger than that of the second array area.

5. The optical module according to claim 3, wherein The microstructure unit of the second microstructure layer is provided with a first light control surface and a second light control surface.

6. The optical module according to claim 1, wherein The lens main body is provided with a mounting groove, and a light source assembly is mounted in the mounting groove.

7. An optical system characterized by comprising: The optical module comprises a main body, a first lens part, a second lens part and a third lens part are arranged on the main body, and the first lens part, the second lens part and the third lens part are distributed in a delta relationship; the first lens part, the second lens part and the third lens part are each provided with a lens main body, the lens main body is provided with a light emitting surface, and the light emitting surface is provided with a microstructure unit; 8. The optical system of claim 7, wherein, Adjacent lens main bodies of the optical modules are distributed in a delta relationship.

9. A luminaire characterized by, The optical module comprises a main body, a first lens part, a second lens part and a third lens part are arranged on the main body, and the first lens part, the second lens part and the third lens part are distributed in a delta relationship; the first lens part, the second lens part and the third lens part are each provided with a lens main body, the lens main body is provided with a light emitting surface, and the light emitting surface is provided with a microstructure unit;

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