Low-position illumination optical lens
By designing a low-level illumination optical lens, the refraction and reflection principles are used to change the direction of the light beam and refract the light that originally hits the sky to the road, solving the problems of glare and insufficient light caused by low-level illumination street light lenses in the existing technology, achieving more efficient illumination effect and power savings.
Patent Information
- Application Number
- CN202422201932.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the prior art, lenses of low-level lighting street lamps are prone to cause driver glare when used, and light illuminates the road surface inadequately, making it impossible to effectively control glare and improve irradiation efficiency.
A low-level illumination optical lens is designed. By setting up five groups of illumination surface structures, including curved surface light entering, vertical surface light entering, total reflection surface, light exit surface and optical surface, the principle of refraction and reflection is used to change the direction of the light beam, refract the light originally hit to the sky onto the road, reduce glare, and collect the light beam through the curved surface light entering, improve the brightness uniformity of the road.
It effectively reduces glare, ensures that light does not enter the driver's eyes directly, and at the same time improves the average brightness and brightness uniformity of the road, which can reduce the power of street lights under the same power and save electricity.
Smart Images
Figure CN222963801U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical lens devices, and particularly relates to a low-position illumination optical lens. Background Art
[0002] For urban road lighting, street lamps are generally selected. Conventional street lamps are installed at a high height, and generally, glare is easy to control. However, under some unconventional road conditions, such as viaducts near airports and overpasses in cities, high-pole street lamps cannot be installed on these roads. In this case, low-position illumination street lamps will be installed. The installation height of such street lamps is generally only about one meter, and glare needs to be strictly controlled to prevent the light from directly entering the driver's eyes.
[0003] It is very difficult to control the glare of circular lenses on the market. Part of the light directly enters the driver's eyes, causing serious glare. Only half of the light of the circular lenses on the market hits the road surface, and the other half hits the sky. To meet the road lighting standard, lamps with higher power are required. Summary of the Utility Model
[0004] Technical Problems to be Solved
[0005] In view of the above-mentioned drawbacks of the prior art, the utility model provides a low-position illumination optical lens, which can effectively solve the problems of glare generated by the lens for drivers and insufficient illumination of the road surface by light in the prior art.
[0006] Technical Solutions
[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0008] The utility model provides a low-position illumination optical lens, including a lens structure. A vertical light incident surface is opened on one side of the lens structure. A curved surface groove is opened at the bottom end of the vertical light incident surface to form a curved surface light incident surface. The back surface of the vertical light incident surface forms a total reflection surface. The bottom end of the lens structure is provided with a light exit surface, and the outside is provided with an optical surface. The curved surface light incident surface, the vertical light incident surface, the total reflection surface, the light exit surface, and the optical surface form the illumination surface of the lens structure.
[0009] Further, the included angle between the light exit surface and the total reflection surface is between 90° and 135°.
[0010] Further, both the light exit surface and the optical surface are convex surface structures facing outward.
[0011] Further, both the total reflection surface and the curved surface light incident surface are free-form surfaces.
[0012] Further, the vertical light incident surface is a planar structure parallel to the outer side surface.
[0013] Furthermore, the curved light incident surface is a spherical surface.
[0014] Advantages
[0015] The technical solution provided by the present utility model has the following advantages compared with the known public technologies:
[0016] Through the five groups of illumination surface structures provided by the present utility model, the first part includes a curved light incident surface, which plays a role in converging light beams; the second part is a vertical light incident surface. The inclined light incident surface refracts a part of the light that was originally emitted into the sky to the total reflection surface through refraction. The total reflection surface changes the direction of the light beam through reflection, causing this part of the light to hit the light exit surface. The light exit surface refracts the light beam again and precisely hits the road surface; the light beam converged by the curved light incident surface is refracted by the light exit surface. The light exit surface controls different light beams to hit different road surfaces through curvature changes, while improving the uniformity of road brightness. All the light emitted by the LED can be irradiated on the road. Under the condition of using street lamps with the same power, the above technology can improve the average brightness of the road, or reduce the power of the street lamp on the premise of meeting the road lighting standard, saving electricity.
[0017] Moreover, through the special optical design of the above technical solution, while refracting a part of the light that was originally emitted into the sky to the road, it greatly reduces glare, and no light directly enters the driver's eyes. The low-position lighting street lamp using this lens can be more widely applied to urban roads, replacing more high-pole street lamps, reducing the installation and maintenance costs of street lamps. The difference between this device and the existing structure is that a certain angle structure is formed between the total reflection surface and the light exit surface, which can expand the light passing through the light exit surface and increase the part irradiated on the ground. When the vertical light incident surface is in a parallel state, compared with the existing arc surface, it can effectively weaken the focusing problem caused by direct light irradiation and maintain a parallel state as much as possible, facilitating the subsequent light input. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0019] Figure 1 is one of the structural schematic diagrams of the present utility model;
[0020] Figure 2 is the second structural schematic diagram of the present utility model;
[0021] Figure 3This is the structural sectional view in the present utility model.
[0022] The reference numerals in the figure respectively represent: 1, lens structure; 11, curved light incident surface; 12, vertical light incident surface; 13, total reflection surface; 14, light exit surface; 15, optical surface. Specific embodiments
[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0024] The present utility model will be further described below with reference to the embodiments.
[0025] Embodiment: A low-position lighting optical lens, referring to the attached Figure 1 - attached Figure 3 , including a lens structure 1. A vertical light incident surface 12 is provided on one side of the lens structure 1. A curved groove is provided at the bottom end of the vertical light incident surface 12 to form a curved light incident surface 11. The back surface of the vertical light incident surface 12 forms a total reflection surface 13. A light exit surface 14 is provided at the bottom end of the lens structure 1, and an optical surface 15 is provided on the outside. The curved light incident surface 11, the vertical light incident surface 12, the total reflection surface 13, the light exit surface 14 and the optical surface 15 form the illumination surface of the lens structure 1; through the five groups of illumination surface structures provided, the first part includes the curved light incident surface 11, which plays a role in converging the light beam; the second part is the vertical light incident surface 12. The inclined light incident surface refracts a part of the light that was originally emitted into the sky to the total reflection surface 13 through refraction. The total reflection surface 13 changes the direction of the light beam through reflection, so that this part of the light hits the light exit surface 14. The light exit surface 14 refracts the light beam again and accurately hits the light beam on the road surface; the light beam converged by the curved light incident surface 11 is refracted by the light exit surface 14. The light exit surface 14 controls different light beams to hit different road surfaces through the refraction of the curvature change, and at the same time improves the uniformity of the road brightness. The light emitted by the LED can all be irradiated on the road. Under the condition of using street lamps with the same power, the above technology can improve the average brightness of the road, or reduce the power of the street lamp under the premise of meeting the road lighting standard, saving electricity.
[0026] The included angle between the light-emitting surface 14 and the total reflection surface 13 is between 90° and 135°; both the light-emitting surface 14 and the optical surface 15 are outward convex surface structures; both the total reflection surface 13 and the curved light-incident surface 11 are free-form surfaces; the vertical light-incident surface 12 is a planar structure parallel to the outer side surface; the curved light-incident surface 11 is a spherical surface; through special optical design, while refracting a part of the light that originally hits the sky onto the road, the glare is greatly reduced, and no light directly enters the driver's eyes. The low-position lighting street lamp using this lens can be more widely applied to urban roads, replace more high-mast street lamps, reduce the installation and maintenance costs of street lamps. Moreover, the difference between this device and the existing structure is that a certain included angle structure is formed between the total reflection surface 13 and the light-emitting surface 14, which can expand the light passing through the light-emitting surface 14 and increase the part irradiated on the ground. When the vertical light-incident surface 12 is in a parallel state, compared with the existing arc surface, it can effectively weaken the focusing problem caused by direct light irradiation, maintain a parallel state as much as possible, and facilitate maintaining the subsequent light input amount.
[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.
Claims
1. A low-position lighting optical lens, characterized in that: The invention comprises a lens structure (1), wherein a vertical light incident surface (12) is provided on one side of the lens structure (1), a curved groove is provided at the bottom end of the vertical light incident surface (12) to form a curved light incident surface (11), a total reflection surface (13) is formed on the back side of the vertical light incident surface (12), a light emitting surface (14) is provided at the bottom end of the lens structure (1), and an optical surface (15) is provided on the outside, and the curved light incident surface (11), the vertical light incident surface (12), the total reflection surface (13), the light emitting surface (14) and the optical surface (15) constitute the illumination surface of the lens structure (1).
2. A low-position lighting optical lens according to claim 1, characterized in that: The angle between the light emitting surface (14) and the total reflection surface (13) is between 90° and 135°.
3. The low-position illumination optical lens according to claim 1, characterized in that: The light emitting surface (14) and the optical surface (15) are both outwardly convex structures.
4. The low-position illumination optical lens according to claim 1, characterized in that: The total reflection surface (13) and the curved light incident surface (11) are both free-form surfaces.
5. The low-position illumination optical lens according to claim 4, characterized in that: The vertical light incident surface (12) is a planar structure parallel to the outer side surface.
6. The low-position illumination optical lens according to claim 1, characterized in that: The curved light incident surface (11) is a spherical surface.