Symmetric ultra-wide angle projection device

Abstract

This invention provides an ultra-wide-angle symmetrical projection device, comprising a light source and a U-shaped reflector. The light source is located at the center of the inner side of the reflector, and multiple sets of reflective surfaces guide the light to form four independent illumination areas. This device can simultaneously produce ultra-wide-angle illumination from both sides and long-distance light distribution from a narrow angle in front, achieving symmetrical illumination characteristics of ultra-wide-angle illumination on the long side and focused light on the short side. It is suitable for applications requiring large-area and high-precision guided lighting.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, specifically to an ultra-wide-angle symmetrical projection device. This device features an ultra-wide-angle long side and a narrow-angle short side for focused lighting. It can be applied to scenarios requiring active sensing, such as machine vision, automated guided vehicles (AGVs, AMRs), and monitoring systems, as well as lighting for signboards, wall washer, and traffic guidance signs. Furthermore, it can significantly improve energy projection density and reduce energy consumption in ultraviolet and infrared applications in air conditioning, medical, and industrial equipment. Its optical projection method is similar in principle to the active beam illumination application of LiDAR. Prior Technology

[0002] While commonly available lighting equipment, such as spotlights, has the advantage of concentrating light, it also has the following limitations in practical applications:

[0003] 1. Limited lighting range: Generally, spotlights can only concentrate light on a small area. When it is necessary to effectively illuminate a large space or multiple targets, multiple sets of lights need to be installed, which makes the space configuration complicated and increases the construction cost.

[0004] 2. Low energy efficiency: Because multiple additional lamps are required to expand the lighting range, the overall power consumption increases, which is not ideal for areas that need to operate for a long time or have energy-saving requirements.

[0005] Therefore, there is still an urgent market demand for lighting solutions that combine high-efficiency wide-angle lighting with energy-saving features. Summary of the Invention

[0006] In view of the problems of insufficient illumination range and poor energy efficiency of existing lighting devices, the main objective of this invention is to provide an ultra-wide-angle symmetrical projection device. This device has the characteristics of ultra-wide-angle illumination on the long side and narrow-angle light focusing on the short side, which can achieve uniform illumination over a large area while maintaining high-brightness concentrated lighting.

[0007] The structure of this invention comprises: a light source and a reflector;

[0008] The reflector has an outer side and an inner side; characterized in that:

[0009] The aforementioned reflector is shaped like a U-shape, and the light source is installed in the center of the reflector;

[0010] An outer reflective surface is provided on each side of the light source, and the outer reflective surface has a first reflection angle with the light source, so that the light generated by the light source is irradiated by the two outer reflective surfaces to both sides of the reflector to form an extremely wide-angle outer light distribution;

[0011] The light source and the two outer reflective surfaces form two symmetrical long-distance reflective surfaces at the top of the reflective surface. The long-distance reflective surfaces are symmetrical to each other and have a third reflection angle, so that the light generated by the light source is distributed forward through the long-distance reflective surfaces.

[0012] By illuminating the reflective surfaces of various parts inside the reflector with the aforementioned light source, the illumination effect of the long side of the projection area is achieved with an extremely wide angle and the short side with an extremely narrow angle.

[0013] The light source has outer reflective surfaces on both sides, which allows light to be projected onto both sides of the device, forming an extremely wide-angle illumination range (e.g., about 160-170 degrees).

[0014] In addition, there are symmetrically arranged long-distance reflective surfaces above the light source, which can reflect light to the front of the device to achieve forward long-distance illumination (e.g., about 5 to 25 degrees) and also have light-focusing characteristics.

[0015] Based on the above description, the features and effects of the present invention are briefly summarized as follows:

[0016] 1. Extremely wide-angle long-distance projection: Through multiple reflective surfaces inside the reflector, it can still achieve an extremely wide-angle projection effect while focusing light at a narrow angle, reducing the number of lights required.

[0017] 2. Light pollution control: No light spills outside the projection range, effectively controlling light pollution.

[0018] 3. Equipment application: It can significantly improve energy projection density, thereby increasing efficiency and reducing the number of lamps required.

[0019] 4. Reduced lighting fixtures and energy consumption: Since the optics of this invention can cover an extremely wide range with a single lamp, replacing the effect that previously required multiple sets of lamps, the number of lamps and energy consumption are reduced, thereby improving overall lighting efficiency.

[0020] 5. By combining the above-mentioned reflective surfaces, the present invention can achieve wide-area illumination over a short distance, while also having a long-distance focusing effect, thereby improving the lighting efficiency and application flexibility of a single lamp.

[0021] 6. The optical structure design disclosed in this invention is suitable for application scenarios that require both long-distance, wide-range lighting and directional light source configuration, such as: indoor and outdoor billboards, wall washer lighting, traffic guidance signs, automated navigation vehicles, machine vision, sensor light sources, air conditioning ultraviolet sterilization, medical and industrial ultraviolet and infrared applications, or smart lighting fields, etc., and has good spatial adaptability and light distribution efficiency. Simple Explanation of the Diagram

[0022]

[0023] Figure 1: Perspective view of the present invention.

[0024] Figure 2: Cross-sectional view of the present invention.

[0025] Figure 3: Reflection path diagram of the present invention (I).

[0026] Figure 4: Reflection path diagram of the present invention (II).

[0027] Figure 5: Schematic diagram of the light projection area of ​​the present invention.

[0028] Figure 6: Light distribution diagram of the present invention.

[0029] Figure 1: The projection range effect produced by the present invention.

[0030] Figure 2: The present invention is actually used in parking lot lighting.

[0031] Figure 3: The present invention is actually used in outdoor lighting.

[0032] Figure 4: The present invention is actually used in outdoor lighting.

[0033] Figure 5: The present invention can cover the illumination range of 12 conventional lighting lamps with just one lamp.

[0034] Figure 6: A diagram illustrating the application of this invention in short-distance, wide-area lighting.

[0035] Figure 7: An illustration of the effect of the light projected onto the wall surface according to the present invention.

[0036] Figure 8: Effect diagram of the present invention applied to entrance and exit lighting. Implementation

[0037] As shown in Figures 1 and 2, the ultra-wide-angle symmetrical projection device of the present invention comprises a light source 1 and a reflector 2.

[0038] The light source 1 is mounted on the reflector 2.

[0039] The reflector 2 has an outer side 2A and an inner side 2B.

[0040] As shown in Figure 1, the aforementioned reflector 2 has an elliptical shape.

[0041] As shown in Figure 1, the inside of the reflector 2 is the location of the light source 1.

[0042] As shown in Figures 1 and 3, an outer reflective surface F, G, H, and I are respectively provided on both sides of the light source 1. The outer reflective surfaces F, G, H, and I have a first reflection angle θ1 with the light source 1, so that the light generated by the light source 1 is irradiated by the two outer reflective surfaces F, G, H, and I to one side of the reflector 2 to distribute light at an extremely wide angle of 80 to 85 degrees.

[0043] As shown in Figures 1, 2, and 4, the light source 1 and the two outer reflective surfaces F, G, H, and I form two symmetrical long-distance reflective surfaces B, C, D, and E above each other. The aforementioned long-distance reflective surfaces B, C, D, and E have a third reflection angle θ3, so that the light generated by the light source 1 is distributed forward at a distance of 5 to 25 degrees through the aforementioned long-distance reflective surfaces B, C, D, and E.

[0044] In addition, the distant reflecting surfaces B, C, D, and E form a second reflection angle θ2 with the light source 1.

[0045] As shown in Figure 5, by illuminating the reflective surfaces B, C, D, E, F, G, H, and I within the reflector 2 using the aforementioned light source, a wide-area illumination effect is achieved. The outer reflective surfaces F and G form a first illumination area FG; the outer reflective surfaces H and I form a second illumination area HI; the distant reflective surfaces B and C combine to form a third illumination area BC; the distant reflective surfaces D and E combine to form the third illumination area BC; and the third illumination area BC, together with the fourth illumination area DE, provide a distant illumination beam. Figure 6 shows a simulated light distribution diagram of this invention, which demonstrates an illumination beam that can produce an extremely wide-angle long side and a narrow-angle focused short side.

[0046] The long-distance light distribution generated by the third illumination area BC and the fourth illumination area DE can produce the effect of short-side narrow-angle light focusing.

[0047] The extremely wide-angle light distribution produced by the outer reflective surfaces F, G, H, and I, since the outer reflective surfaces F, G, H, and I have a symmetrical structure, can achieve an extremely wide-angle lighting effect of more than 160 to 170 degrees when the two sides are added together, as shown in Figure 5.

[0048] As shown in Figures 5 and 6, to further illustrate the lighting effect and spatial light distribution characteristics produced by the present invention, the irradiated area is divided into the following three types:

[0049] The first irradiation area FG is generated by the outer reflective surfaces F and G. It belongs to the two-sided projection irradiation area, with a single-sided light distribution angle of 80~85 degrees, corresponding to both sides of the reflector 2.

[0050] The second illumination area HI extends from the outer reflective surface H and I structure, forming an extremely wide-angle illumination area on both the left and right sides. The overall light distribution covers 160~170 degrees, achieving symmetrical extremely wide-angle illumination.

[0051] The third illumination area BC and the fourth illumination area DE are composed of long-distance reflective surfaces B, C, D and E. They belong to the long-distance illumination area in front of the device, with a light distribution angle of 5 to 25 degrees on the upper and lower short sides. They have both focusing and long-distance guidance functions.

[0052] To demonstrate the effectiveness of this invention, please refer to Figures 1 to 8. Figure 1 shows the projection range effect produced by this invention, which indeed corresponds to Figure 5. Figures 2 and 3 are projection range diagrams of this invention, showing that this invention has a good lighting effect. Figures 4 to 8 are actual application effect diagrams of this invention, showing that the effectiveness of this invention truly improves the shortcomings of conventional lighting fixtures.

[0053] In conclusion, the structure of this invention has not been seen in any books or publications or publicly used, and it truly meets the requirements for an invention patent application. We earnestly request your esteemed authority to review this matter and grant the patent as soon as possible. We are deeply grateful for your consideration.

[0054] It should be noted that the above description is a specific embodiment of the present invention and the technical principles used. Any changes made according to the concept of the present invention, if the resulting functions do not exceed the spirit covered by the specification and drawings, should be within the scope of the present invention and are hereby stated.

[0055] 1: Light source

[0056] 2: Reflector

[0057] 2A: Outer side

[0058] 2B: Inside

[0059] F, G, H, I: Outer reflective surface

[0060] θ1: First reflection angle

[0061] B, C, D, E: Long-distance reflective surfaces

[0062] θ2: Second reflection angle

[0063] θ3: Third reflection angle

[0064] FG: First Irradiation Area

[0065] HI: Second irradiation zone

[0066] BC: Third Irradiation Zone

[0067] DE: Fourth Irradiation Zone

Claims

1. A wide-angle symmetrical projection device, comprising: a light source; a reflector disposed at the center of the inner side of a reflector, the reflector having a U-shaped structure and having an outer side and an inner side, and having a plurality of reflective surfaces formed inside; the reflector forming a pair of symmetrical outer reflective surfaces on both sides of the light source, the outer reflective surfaces forming a first reflection angle with the light source, such that light emitted by the light source is reflected by the outer reflective surfaces and projected toward both sides of the device; the reflector forming a pair of symmetrical long-range reflective surfaces above the outer reflective surfaces by a bend, the long-range reflective surfaces forming a second reflection angle and a third reflection angle with the light source, such that light emitted by the light source is reflected by the long-range reflective surfaces and projected toward the front of the device; wherein, The light reflected by the outer reflective surface and the light reflected by the distant reflective surface have different projection directions.

2. The ultra-wide-angle symmetrical projection device as described in claim 1, wherein, The first reflection angle formed between the outer reflective surface and the light source is used to diffuse the light to both sides of the device; the second and third reflection angles formed between the far-distance reflective surface and the light source are used to concentrate the light in front of the device.

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