Reflection type optical system

Abstract

The utility model belongs to the technical field of optics, and particularly relates to a reflection type optical system which comprises at least one light source, a first reflection portion and one or more reflection units, an arc-shaped reflection face is formed on the first reflection portion, the light source is located at the focus position of the arc-shaped reflection face, and the first reflection portion reflects part of light beams of the light source. The reflection units are arranged on the inner side of the arc-shaped reflection face, each reflection unit is arranged in the light path direction of one light source, each reflection unit comprises one or more second reflection parts, and the second reflection parts are arranged to be capable of reflecting the other part of light beams emitted by the light sources and enable the other part of light beams to enter the arc-shaped reflection face. According to the reflective optical system, the first reflecting part and the one or more reflecting units are arranged in the light path direction of the light source, so that the light beams emitted by the light source are projected to the first reflecting part as much as possible; the part precision requirement of the first reflection part is reduced, and the light reflection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of optics, and in particular relates to a reflective optical system. Background Art

[0002] Automotive lighting systems are a vital part of road safety and driving experience. These systems need to efficiently generate and direct light to ensure the safety of drivers and pedestrians. Light reflection plays a pivotal role in automotive lighting systems because it can control the direction of light propagation and improve lighting efficiency. In particular, corner lights or fog lights provide auxiliary lighting for the corners of the road near the front of the vehicle or for the sides or rear of the vehicle. When the road lighting conditions are insufficient, corner lights play a certain auxiliary lighting role, providing protection for driving safety. This type of lamp plays a certain auxiliary lighting role, especially in areas where the road lighting conditions are insufficient. The front fog lamp is installed in the front of the vehicle, and its light color is colorless and has a lighting effect.

[0003] The optical system of traditional corner lights or fog lights usually adopts a solution of light source plus reflector, which has the following disadvantages:

[0004] On the one hand, the design of the reflector is difficult. The curvature and shape of the reflector need to be calculated and optimized in a complex way to obtain the ideal light distribution. The precision of the parts is high, and the shape and surface quality of the reflector must be very fine, otherwise it will affect the reflection efficiency of the light and the accuracy of the light pattern.

[0005] On the other hand, the cut-off line is not clear and the edge of the light pattern formed by the reflective optical system is usually not clear enough, especially for corner lights and fog lights that require precise control of the beam shape. Utility Model Content

[0006] In view of this, in order to solve the problems existing in the prior art, the purpose of the utility model is to provide a reflective optical system, which has the effects of simple optical design, low requirements on parts precision, clear cut-off line, improved reflection efficiency of light and ability to control the width of light pattern.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A reflective optical system, comprising: at least one light source and a first reflective portion, wherein the first reflective portion is formed with a curved reflective surface, the light source is arranged inside the curved reflective surface and is located at a focal position of the curved reflective surface, a portion of the light beam of the light source is projected onto the curved reflective surface, and the curved reflective surface reflects the portion of the light beam;

[0009] It also includes: one or more reflection units, which are arranged on the inner side of the arc-shaped reflection surface, each of the reflection units is arranged along the light path direction of a light source, and each light source emission end is arranged close to the lower end of the reflection unit, and each of the reflection units includes one or more second reflection parts, and the second reflection parts are arranged to reflect another part of the light beam emitted by the light source and make it enter the arc-shaped reflection surface, and the arc-shaped reflection surface reflects the other part of the light beam.

[0010] The specific technical effect is: a first reflecting part and one or more reflecting units are arranged in the light path direction of the light source, so that as much light beam emitted by the light source as possible is projected onto the first reflecting part, thereby reducing the precision requirements of the parts of the first reflecting part and improving the reflection efficiency of the light.

[0011] Further, when the number of the reflection unit is one and the number of the second reflection part is one, the second reflection part is arranged at one side of the light source.

[0012] The specific technical effect is that the second reflecting part is arranged on one side of the light source, which can ensure that the light beam emitted to the side by the light source can be reflected onto the first reflecting part, thereby improving the reflection efficiency of the light.

[0013] Further, when the number of the reflection unit is one and the number of the second reflection parts is two, the two second reflection parts are symmetrically arranged on both sides of the light source, and the light source is located on the intersection line of the lower end surfaces of the two second reflection parts and the symmetry center plane.

[0014] The specific technical effect is: it can ensure that the light beams emitted by the light source to both sides can be reflected onto the first reflecting part, thereby improving the reflection efficiency of the light, and the width of the light pattern can be controlled by symmetrically arranging the second reflecting parts.

[0015] Furthermore, at least one planar connecting portion is disposed at one end of the first reflecting portion, and each planar connecting portion is integrally connected to one of the second reflecting portions.

[0016] The specific technical effect is: by connecting the second reflecting part to the first reflecting part through the planar connecting part, the utilization rate of the light beam reflected from the second reflecting part to the first reflecting part can be improved.

[0017] Further, when the number of the reflecting units is one and the number of the second reflecting parts is three, one of the second reflecting parts is arranged at the rear end of the light source and connected to the planar connecting part, the two ends of the one of the second reflecting parts are respectively connected to the other two second reflecting parts, and the other two second reflecting parts are symmetrically arranged on both sides of the light source.

[0018] The specific technical effect is: by arranging a second reflecting part on both sides and the rear end of the light source, the light beams emitted by the light source to the both sides and the rear end can be reflected onto the first reflecting part, thereby improving the reflection efficiency of the light, and the second reflecting part arranged at the rear end of the light source can control the angle of light diffusion up and down.

[0019] Furthermore, when there are multiple reflecting units, the multiple reflecting units are arranged in an array in sequence along the width direction of the first reflecting portion, and each of the reflecting units is integrally connected to one end of the first reflecting portion through one of the planar connecting portions.

[0020] The specific technical effect is that the number of reflection units can be designed according to actual needs, so as to control the width of the light pattern finally reflected from the first reflection part.

[0021] Furthermore, the second reflecting portion is arranged in a planar structure or an arc-shaped structure, and the upper ends of the planar structure or the arc-shaped structure are arranged to be inclined in a direction away from the light source.

[0022] The specific technical effect is: adopting this inclined design ensures that another part of the light beam emitted by the light source is better projected onto the arc-shaped reflecting surface of the first reflecting part.

[0023] Furthermore, the arc-shaped reflective surface is provided with optical patterns of different patterns.

[0024] The specific technical effect is: by setting optical patterns of different patterns, light propagation can be controlled, light extraction efficiency can be enhanced, reflection can be suppressed, spectral characteristics can be changed and special optical effects can be achieved.

[0025] Furthermore, the other end of the first reflecting portion extends toward the optical axis direction of the light source to form a parabolic shape. When each of the reflecting units includes two second reflecting portions, the two second reflecting portions are symmetrically arranged on both sides of one of the light sources, and the rear ends of the two second reflecting portions are integrally connected to one end of the first reflecting portion.

[0026] The specific technical effect is: adopting this parabolic shape design can increase the angle of light diffusion up and down.

[0027] The beneficial effects of the utility model are:

[0028] (1) A first reflecting portion and one or more reflecting units are arranged in the light path direction of the light source, so that the light beam emitted by the light source is projected onto the first reflecting portion as much as possible through the reflecting unit, thereby reducing the component precision requirements of the first reflecting portion and improving the reflection efficiency of the light.

[0029] (2) The width of the reflected light pattern can be changed by adjusting the number of reflection units or the number of second reflection parts, thereby achieving the effect of controlling the width of the light pattern.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of a reflective optical system of the utility model;

[0033] Figure 2 is a schematic structural diagram of Example 1;

[0034] Figure 3 is a schematic structural diagram of Example 2;

[0035] Figure 4 is a schematic structural diagram of Example 3;

[0036] Figure 5 is a schematic structural diagram of Example 4;

[0037] Figure 6 is a schematic structural diagram of Example 5;

[0038] Figure 7 is a schematic structural diagram of Example 6;

[0039] Figure 8 It is an isometric view of the light principle of the utility model;

[0040] Fig. 9 It is a top view of the light principle of the utility model;

[0041] Fig.10 yes Figure 1 Side view of.

[0042] In the figure:

[0043] 1. Light source; 2. First reflecting part; 3. Arc-shaped reflecting surface; 4. Reflecting unit; 5. Plane connecting part; 6. Second reflecting part. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0045] A reflective optical system, comprising: at least one light source 1 and a first reflective portion 2, wherein the first reflective portion 2 is formed with an arc-shaped reflective surface 3, the light source 1 is arranged on the inner side of the arc-shaped reflective surface 3 and is located at the focal position of the arc-shaped reflective surface 3, a portion of the light beam of the light source 1 is projected onto the arc-shaped reflective surface 3, and the arc-shaped reflective surface 3 reflects the portion of the light beam; and further comprising: one or more reflective units 4, wherein the reflective units 4 are arranged on the inner side of the arc-shaped reflective surface 3, each reflective unit 4 is arranged along the optical path direction of a light source 1, the emission end of each light source 1 is arranged close to the lower end of the reflective unit 4, each reflective unit 4 comprises one or more second reflective portions 6, the second reflective portions 6 are arranged to reflect another portion of the light beam emitted by the light source 1 and make it enter the arc-shaped reflective surface 3, and the arc-shaped reflective surface 3 reflects the other portion of the light beam.

[0046] It should be noted here that: each reflection unit 4 can be connected to one end of the first reflection part 2 directly or through other connecting components; most preferably, the emitting end of each light source 1 is located in the same plane as the lower end of the reflection unit 4; the first reflection part 2 and one or more reflection units 4 are arranged in the light path direction of the light source 1, so that the light beam emitted by the light source 1 is projected onto the first reflection part 2 as much as possible, thereby reducing the component accuracy requirements of the first reflection part 2 and improving the reflection efficiency of the light.

[0047] When the number of the reflecting unit 4 is one and the number of the second reflecting portion 6 is one, the second reflecting portion 6 is disposed at one side of the light source 1 .

[0048] It should be noted here that the second reflective portion 6 is disposed on one side of the light source 1 , which can ensure that the light beam emitted to the side by the light source 1 can be reflected onto the first reflective portion 2 , thereby improving the light reflection efficiency.

[0049] When there is one reflective unit 4 and two second reflective parts 6 , the two second reflective parts 6 are symmetrically arranged on both sides of the light source 1 , and the light source 1 is located on the intersection line of the lower end surfaces of the two second reflective parts 6 and the symmetry center plane.

[0050] It should be noted here that the rear ends of the two second reflecting parts 6 can be directly or integrally connected to one end of the first reflecting part 2 through other connecting components, which can ensure that the light beams emitted by the light source 1 to both sides can be reflected onto the first reflecting part 2, thereby improving the reflection efficiency of the light, and controlling the width of the light pattern by symmetrically setting the two second reflecting parts 6.

[0051] At least one planar connecting portion 5 is disposed at one end of the first reflecting portion 2 , and each planar connecting portion 5 is integrally connected to a second reflecting portion 6 .

[0052] It should be noted here that: by connecting the second reflecting part 6 to the first reflecting part 2 via the planar connecting part 5 , the utilization rate of the light beam reflected from the second reflecting part 6 to the first reflecting part 2 can be improved.

[0053] When the number of the reflecting units 4 is one and the number of the second reflecting parts 6 is three, one of the second reflecting parts 6 is arranged at the rear end of the light source 1 and connected to the planar connecting part 5, the two ends of the second reflecting parts 6 are respectively connected to the other two second reflecting parts 6, and the other two second reflecting parts 6 are symmetrically arranged on both sides of the light source 1.

[0054] It should be noted here that the second reflecting portion 6 arranged at the rear end of the light source 1 can be directly or integrally connected to one end of the first reflecting portion 2 through the planar connecting portion 5. By arranging a second reflecting portion 6 on both sides and the rear end of the light source 1, the light beams emitted by the light source 1 to both sides and the rear end can be reflected onto the first reflecting portion 2, thereby improving the reflection efficiency of the light. In addition, the second reflecting portion 6 arranged at the rear end of the light source 1 can control the angle of light diffusion up and down.

[0055] When there are multiple reflective units 4 , the multiple reflective units 4 are arranged in an array in sequence along the width direction of the first reflective portion 2 , and each reflective unit 4 can be connected to one end of the first reflective portion 2 directly or through a planar connecting portion 5 .

[0056] It should be noted here that the number of the reflection units 4 can be designed according to actual needs, so as to control the width of the light pattern finally reflected from the first reflection part 2 .

[0057] The second reflective portion 6 is arranged in a planar structure or an arc-shaped structure, and the upper end of the planar structure or the arc-shaped structure is arranged to be inclined in a direction away from the light source 1 .

[0058] It should be noted here that: adopting this inclined design ensures that another part of the light beam emitted by the light source 1 is better projected onto the arc-shaped reflecting surface 3 of the first reflecting part 2 .

[0059] Optical patterns of different designs are arranged on the arc-shaped reflecting surface 3 .

[0060] It should be noted here that by setting optical patterns of different patterns, it is possible to control light propagation, enhance light extraction efficiency, suppress reflection, change spectral characteristics and achieve special optical effects.

[0061] The other end of the first reflecting portion 2 extends toward the optical axis direction of the light source 1 to form a parabolic shape. When each reflecting unit 4 includes two second reflecting portions 6, the two second reflecting portions 6 are symmetrically arranged on both sides of a light source 1, and the rear ends of the two second reflecting portions 6 are integrally connected to one end of the first reflecting portion 2.

[0062] It should be noted here that the rear end of the second reflective portion 6 is connected to one end of the first reflective portion 2 directly or through a planar connecting portion 5 to ensure that the parabolic shape is adopted to increase the angle of light diffusion.

[0063] The light source 1 can move toward or away from the second reflecting portion 6 disposed at the rear end of the light source 1 to adapt to the light pattern requirements in different situations. The change in the position of the light source 1 causes the angle of the outgoing light to deflect, thereby affecting the position of the light pattern on the screen.

[0064] It should be noted here that when the light source 1 moves toward the direction of the second reflecting part 6 set at the rear end of the light source 1, the position of the light pattern on the screen moves upward; when the light source 1 moves toward the direction of the second reflecting part 6 set at the rear end of the light source 1, the position of the light pattern on the screen moves downward.

[0065] The specific working principle of the utility model is, see Figure 1 As shown: the light source 1 emits light upward, and most of the emitted light beams are directly projected onto the arc-shaped reflective surface 3, and the first reflective part 2 reflects this part of the light beam onto the screen; the other part of the light beam emitted by the light source 1 with a larger angle is received by the second reflective part 6 arranged at the rear end and both sides around the light source 1 and reflected onto the arc-shaped reflective surface 3, and the first reflective part 2 then reflects this part of the light beam onto the screen. As much as possible of the light beam emitted by the light source 1 is projected onto the first reflective part 2 and reflected onto the screen, the precision requirements of the parts of the first reflective part 2 are reduced, the reflection efficiency of the light is improved, and the width of the light pattern is controlled by the number of the second reflective parts 6 set, and the position of the light pattern projected on the screen is changed by changing the position of the light source 1.

[0066] Embodiment 1:

[0067] like Figure 2As shown, the light source 1 emits light upward, the number of the second reflecting part 6 is one, and the second reflecting part 6 is arranged on the right side of the light source 1, so as to reflect the light beam emitted to the right side by the light source 1 onto the first reflecting part 2, and the second reflecting part 6 is designed to be a planar structure or an arc structure, which can change the angle of the light reflected from the first reflecting part 2.

[0068] Embodiment 2:

[0069] like Figure 3 As shown, the difference from Embodiment 1 is that the second reflecting portion 6 is arranged on the left side of the light source 1 , and can reflect the light beam emitted to the left by the light source 1 onto the first reflecting portion 2 .

[0070] Embodiment 3:

[0071] like Figure 4 As shown, the light source 1 emits light upward, there are two second reflecting parts 6 , and the two second reflecting parts 6 are symmetrically arranged on both sides of the light source 1 , so as to reflect the light beams emitted by the light source 1 to both sides onto the first reflecting part 2 .

[0072] Embodiment 4:

[0073] like Figure 5 As shown, the light source 1 emits light upward, and there are three light sources 1 and three reflecting units 4. Each light source 1 is arranged in a one-to-one correspondence with a reflecting unit 4. Each reflecting unit 4 includes two second reflecting parts 6. The two second reflecting parts 6 are symmetrically arranged on both sides of a light source 1, so that the light beams emitted by the light source 1 to both sides can be reflected onto the first reflecting part 2.

[0074] Embodiment 5:

[0075] like Figure 6 As shown, the difference from Example 4 is that each reflecting unit 4 includes three second reflecting parts 6 and a planar connecting part 5, and the three second reflecting parts 6 are respectively arranged on both sides and the rear end of the light source 1, and the second reflecting part 6 at the rear end is integrally connected with the planar connecting part 5, and the planar connecting part 5 is integrally connected with one end of the first reflecting part 2, so that the light beams emitted by the light source 1 to the both sides and the rear end can be reflected onto the first reflecting part 2.

[0076] Embodiment 6:

[0077] like Figure 7 As shown, the difference from Example 5 is that the light source 1 emits light downward.

[0078] In summary, the beneficial effects of the utility model are:

[0079] (1) A first reflecting portion 2 and one or more reflecting units 4 are arranged in the light path direction of the light source 1 so that as much of the light beam emitted by the light source 1 as possible is projected onto the first reflecting portion 2, thereby reducing the component precision requirements of the first reflecting portion 2 and improving the reflection efficiency of the light.

[0080] (2) The width of the reflected light pattern can be changed by adjusting the number of reflection units 4 or the number of second reflection parts 6, thereby achieving the effect of controlling the width of the light pattern.

[0081] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0082] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0084] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A reflective optical system, characterized in that: include: At least one light source (1) and a first reflecting portion (2), the first reflecting portion (2) forming a curved reflecting surface (3), the light source (1) being arranged on the inner side of the curved reflecting surface (3) and located at the focal position of the curved reflecting surface (3), a portion of the light beam of the light source (1) being projected onto the curved reflecting surface (3), and the curved reflecting surface (3) reflecting the portion of the light beam; The invention also comprises: one or more reflection units (4), the reflection units (4) being arranged on the inner side of the arc-shaped reflection surface (3), each of the reflection units (4) being arranged along the optical path direction of a light source (1), the emission end of each light source (1) being arranged close to the lower end of the reflection unit (4), each of the reflection units (4) comprising one or more second reflection parts (6), the second reflection parts (6) being arranged to reflect another part of the light beam emitted by the light source (1) and causing it to enter the arc-shaped reflection surface (3), and the arc-shaped reflection surface (3) reflecting the other part of the light beam.

2. A reflective optical system as claimed in claim 1, characterized in that: When the number of the reflection unit (4) is one and the number of the second reflection portion (6) is one, the second reflection portion (6) is arranged on one side of the light source (1).

3. A reflective optical system as claimed in claim 1, characterized in that: When the number of the reflection unit (4) is one and the number of the second reflection parts (6) is two, the two second reflection parts (6) are symmetrically arranged on both sides of the light source (1), and the light source (1) is located on the intersection line of the lower end faces of the two second reflection parts (6) and the symmetry center plane.

4. A reflective optical system as claimed in claim 1, characterized in that: At least one planar connecting portion (5) is provided at one end of the first reflecting portion (2), and each planar connecting portion (5) is integrally connected to one of the second reflecting portions (6).

5. A reflective optical system as claimed in claim 4, characterized in that: When the number of the reflection unit (4) is one and the number of the second reflection parts (6) is three, one of the second reflection parts (6) is arranged at the rear end of the light source (1) and connected to the planar connection part (5), and the two ends of the one of the second reflection parts (6) are respectively connected to the other two second reflection parts (6), and the other two second reflection parts (6) are symmetrically arranged on both sides of the light source (1).

6. A reflective optical system as claimed in claim 4, characterized in that: When there are a plurality of the reflection units (4), the plurality of reflection units (4) are arranged in an array in sequence along the width direction of the first reflection portion (2), and each of the reflection units (4) is integrally connected to one end of the first reflection portion (2) via a planar connection portion (5).

7. A reflective optical system as claimed in claim 1, characterized in that: The second reflecting portion (6) is arranged in a planar structure or an arc-shaped structure, and the upper end of the planar structure or the arc-shaped structure is arranged to be inclined in a direction away from the light source (1).

8. A reflective optical system as claimed in claim 1, characterized in that: Optical patterns of different patterns are arranged on the arc-shaped reflection surface (3).

9. A reflective optical system as claimed in claim 1, characterized in that: The other end of the first reflecting portion (2) extends in the direction of the optical axis of the light source (1) to form a parabola-like shape; when each of the reflecting units (4) comprises two second reflecting portions (6), the two second reflecting portions (6) are symmetrically arranged on both sides of one of the light sources (1); and the rear ends of the two second reflecting portions (6) are integrally connected to one end of the first reflecting portion (2).

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