A high light efficiency combined optical system

Abstract

This case involves a high light efficiency combined optical system, including a reflective cup with a tapered inner ring, the tapered inner ring of which is a parabola with circular symmetry; a lens inserted into the reflective cup and a light source arranged at the tapered tip of the reflective cup; the central axes of the lens, the tapered inner ring of the reflective cup and the light source coincide with each other, and a light-transmitting gap is provided between the lens and the reflective cup. Compared with the prior art, the beneficial effect of this case is that this case optimizes the traditional automotive optical system, combines the advantages of the reflective cup and the lens, realizes an integrated optical system that emits light at all angles, realizes light collection at all angles, has high light efficiency, and is low in cost. Only one optical system is needed to realize both high and low beam lighting. The reflective cup is used to collect the straight part of the light reflected by the mirror, and the light with the strongest light intensity at the center angle is collected by the lens, so that the light from the light source is maximized. It is not only simple in structure and low in cost, but also very energy-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to the field of high light-efficiency combined optical systems. Background Art

[0002] With the intelligentization of automobiles, the requirements for the intelligence of automobile lamps are higher, especially the requirements for the light output efficiency of automobile lamps are higher. The traditional automobile light distribution structure is a reflector or lens.

[0003] The reflective cup can only collect light from the oblique part, so the light with the strongest intensity at the center angle cannot be collected, and the half angle of light collection will not exceed 60°, and the rest is floodlight. Otherwise, the height of the light cup will be very high, which will increase the cost and be unfavorable for production. The large volume of the product will also affect portability. Please refer to the attached for its effect. Figure 8 And attached Fig. 9 .

[0004] However, the lens only collects light from the straight line part, so it can only collect light from the area with relatively high central light intensity distribution, and the light collection half angle is ≤45°, otherwise the light spot will be relatively poor, and the light from the oblique line part will be directly invalid. Please refer to the attached Fig.10 And attached Fig.11 .

[0005] Because of this problem, many modified cars will use LED lamp beads for modification, and then use lenses in combination. At this time, the lenses also need to be larger in size, and the overall modification cost is higher.

[0006] Some demands also apply TIR lenses to solve the problem of low light efficiency. However, due to the shrinkage of TIR lenses during injection molding, it is difficult to meet the optical design requirements. Therefore, patterns are added to the surface of such lenses to make the light spot larger and more uniform. Since the light spot is too large, the use distance is destined to be limited, and it is only suitable for use in close scenes, such as track lights in stores. In addition, it must be considered that if the distance is too close to the LED, high temperature will cause the lens to deform, so it is generally used in low-power products.

[0007] Therefore, developing a light distribution structure that can combine the advantages of a reflective cup and a lens is a technical problem that needs to be solved urgently in the industry. Utility Model Content

[0008] The utility model provides a high light-efficiency combined optical system, aiming to solve the problem of low light-emitting efficiency caused by the single light distribution structure of the current automobile.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A high light-efficiency combined optical system comprises a reflective cup with an inner cone, wherein the cone of the inner cone is a parabola with circumferential symmetry;

[0011] It also includes a lens inserted into the reflective cup and a light source arranged at the conical tip of the reflective cup;

[0012] The conical inner rings of the lens and the reflective cup and the central axis of the light source coincide with each other, and a light-transmitting gap is provided between the lens and the reflective cup.

[0013] Compared with the existing technology, the beneficial effect of this case is that this case optimizes the traditional automotive optical system, combines the advantages of the reflective cup and the lens, realizes an integrated optical system that emits light at all angles, realizes light collection at all angles, has high light efficiency, and is low in cost. Only one optical system is needed to simultaneously realize high and low beam lighting. The reflective cup is used to collect the straight part of the light reflected by the mirror, and the light with the strongest light intensity at the center angle is collected by the lens, so that the light from the light source is maximized. It is not only simple in structure, low in cost, but also very energy-saving.

[0014] Preferably, the lens is arranged on a side close to the light source.

[0015] In some embodiments, the lens can be a single convex lens or a double convex lens or a multi-order TIR lens or a Fresnel lens. The light output angle of the lens is designed according to the needs, and can be collimated light or large-angle light (used to increase the brightness within a certain range, or to cooperate with the light output angle of the reflective cup).

[0016] In some embodiments, the inner reflective surface of the reflective cup may be a smooth surface, and may be made into a scale-like or orange peel surface texture shape, and the texture shape is not limited, so as to facilitate differentiated design, or different light output angle designs.

[0017] In some embodiments, the shape of the reflective cup is not limited, and can be a regular circle, or the outer edge can be cut and shaped to make a regular polygonal design.

[0018] Preferably, the high light-efficiency combined optical system is provided with a square support plate, and four reflective cups are respectively arranged around the four sides of the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a parabolic reflector cup of a high light-efficiency combined optical system in this case;

[0020] Figure 2 yes Figure 1 A cross-sectional view of an embodiment of a parabolic reflector cup;

[0021] Figure 3 This is a schematic diagram of a scale-armor reflective cup of a high-light-efficiency combined optical system in this case;

[0022] Figure 4 yes Figure 3Schematic diagram of the four combinations of scale reflective cups;

[0023] Figure 5 yes Figure 3 A front view of the four combined scale reflective cups;

[0024] Figure 6 It is a schematic diagram of a multi-order TIR lens of a high light-efficiency combined optical system in this case;

[0025] Figure 7 It is a schematic diagram of combined light collection;

[0026] Figure 8 This is the effect picture when using the reflective cup alone;

[0027] Fig. 9 This is a diagram showing the LED light emitting angle when using a reflector cup alone;

[0028] Fig.10 This is the effect picture when using the lens alone;

[0029] Fig.11 This is a diagram showing the LED light emission angle when using a lens alone. DETAILED DESCRIPTION

[0030] The features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art:

[0031] Example 1, please refer to Figure 1 and Figure 2 The present invention is a high light efficiency combined optical system, a reflector cup 100 with a tapered inner ring, the inner ring of which is a parabola with circumferential symmetry, and the light spot presented is a circle. The present invention also includes a lens 200 inserted into the reflector cup 100 and a light source 300 arranged at the tip of the cone of the reflector cup 100. The light source 300 is not described in detail in the present invention, and the lens 200 is described in detail as follows.

[0032] In the preferred embodiment, the lens 200 is arranged on a side close to the light source, and cooperates with the reflective cup to collect and process the light at all angles, increase its light collection half angle, and improve the effective light utilization rate of the optical system. For the light passing through the lens, the light angle can be designed according to the application requirements, which is not necessarily collimated, and this part of the light can also be collected to improve the floodlight brightness within a certain angle. The type of lens 200 can be a plane lens or a convex lens, and the convex lens can also be a single convex, double convex, Fresnel lens, or multi-order TIR lens.

[0033] In this way, this case optimizes the traditional automotive optical system and combines the advantages of the reflective cup 100 and the lens 200 to realize an integrated optical system that emits light at all angles, achieves light collection at all angles, has high light efficiency, and is low in cost. Only one optical system is needed to simultaneously realize high and low beam lighting. The reflective cup 100 is used to collect the straight part of the light reflected by the mirror 200, and the light with the strongest light intensity at the center angle is collected through the lens 200, so that the light from the light source is maximized. It is not only simple in structure and low in cost, but also very energy-saving. Please refer to the schematic diagram of the combined light collection. Figure 7 .

[0034] Example 2, please refer to Figure 3 The lens 200 may also be a Fresnel lens, which uses the refraction principle. In this case, the light spot is the image of the light point.

[0035] In some embodiments, the inner circle of the reflective cup 100 is provided with a scale pattern 110 .

[0036] Example 3, please refer to Figure 4 and Figure 5 . The wide mouth of the reflective cup 100 can be a regular octagon, hexagon, pentagon or other regular polygon, or a circle. The headlight can be modular, in which case an octagonal reflective cup 100 can be used. A square support plate 120 is provided in the middle of the modular headlight, and four octagonal reflective cups 100 are provided around the support plate 120. At this time, the corners of two adjacent reflective cups 100 will correspond to each other, naturally forming a four-leaf clover shape (the product shape can be made into a three-leaf clover or other various shapes, which is only used as an example here).

[0037] Example 4, please refer to Figure 6 The lens 200 may also be a multi-order TIR lens, which uses the principle of total reflection in a medium, greatly improving the effective light utilization rate of the optical system.

[0038] As mentioned above, this case protects a high-light-efficiency combined optical system, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A high light efficiency combined optical system, characterized in that A reflective cup (100) comprising an inner cone, wherein the cone of the inner cone is a parabola with circumferential symmetry; It also includes a lens (200) inserted into the reflective cup (100) and a light source (300) arranged at the conical tip of the reflective cup (100); The conical inner rings of the lens (200) and the reflective cup (100) and the central axis of the light source coincide with each other, and a light-transmitting gap is provided between the lens (200) and the reflective cup (100).

2. A high light efficiency combined optical system as claimed in claim 1, characterized in that The lens (200) is arranged on a side close to the light source (300).

3. A high light efficiency combined optical system as claimed in claim 1, characterized in that The lens (200) may be a single convex lens or a double convex lens or a multi-order TIR lens or a Fresnel lens, and the light output angle of the lens (200) is collimated light or large-angle light.

4. A high light efficiency combined optical system as claimed in claim 1, characterized in that The inner reflective surface of the reflective cup (100) is a smooth surface or has scale-like patterns or orange peel-like patterns or patterns with different light emission angles.

5. A high light efficiency combined optical system as claimed in claim 1, characterized in that The reflective cup has a regular polygonal or circular shape.

6. A high light efficiency combined optical system as claimed in claim 5, characterized in that It also comprises a square support plate (120), and four reflective cups (100) are respectively arranged around the four sides of the support plate (120).

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