Anti-dazzle optical structure and lamp
By using anti-glare structures in lamps, light transmitting and reflecting parts combine to control the light propagation direction, the glare problem caused by small light coverage in lamps is solved, and the effect of high luminous flux and low brightness is achieved, and the uniformity of the light spot is improved. sex.
Patent Information
- Application Number
- CN202310771623.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-27
- Publication Date
- 2024-12-27
AI Technical Summary
The light source emitted by LEDs in existing lamps is emitted through the lens, resulting in a smaller light coverage area and a higher brightness, which is easy to cause glare problems.
An anti-glare optical structure is adopted, including a light transmitting member and a reflector. The light transmitting member is used to transmit light. During the transmission process, the light enters the light transmitting member through the first cone surface and the inner side wall of the light source cavity, and passes through the second cone. The reflector is used to receive and reflect light, control the light emission angle and propagation direction, adjust the size of the secondary light spot, and reduce the brightness of the local area.
It effectively alleviates the problems of excessive brightness and glare in local areas caused by the restriction of light output area, improves the uniformity of the light spot, and achieves the high luminous flux and low brightness effects of the lamp, which is suitable for direct viewing of the human eye.
Smart Images
Figure CN119196590A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of optical instruments, and specifically relates to an anti-glare optical structure and a lamp. Background Art
[0002] In some lamps in the related art, the light source emitted by the LED is emitted through a lens, and the area covered by the light emitted through the lens is relatively small and the brightness is high, which easily causes glare problems. Summary of the invention
[0003] The purpose of the embodiments of the present application is to provide an anti-glare optical structure and a lamp, which can at least solve the glare problem.
[0004] In order to solve the above technical problems, this application is implemented as follows:
[0005] The embodiment of the present application provides an anti-glare optical structure, comprising: a light-transmitting element and a light-reflecting element, wherein the light-reflecting element is arranged at one end of the light-transmitting element along the extension direction of its own optical axis;
[0006] A light source cavity is provided at one end of the light-transmitting element away from the light-reflecting element, the inner side wall of the light source cavity is a first incident surface, and the outer side wall of the light source cavity is a first reflecting surface;
[0007] The bottom wall of the light source cavity is recessed along the extending direction of the optical axis toward the reflector to form a first conical surface, and the first conical surface is a second incident surface;
[0008] The end surface of the light-transmitting element facing the reflective element is concave along the extending direction of the optical axis in a direction away from the reflective element to form a second conical surface;
[0009] The reflective element is provided with a reflective cavity, the second conical surface faces the reflective cavity, and the second conical surface is an exit surface.
[0010] The embodiment of the present application also provides a lamp, including a light source and the above-mentioned anti-glare optical structure;
[0011] At least part of the light source is disposed in the light source cavity (110), or the light source (300) is disposed opposite to the accommodating cavity (110).
[0012] In the embodiment of the present application, the light emitted by the light source can be transmitted through the light-transmitting member, and in the process of transmitting the light through the light-transmitting member, the light enters the light-transmitting member through the first conical surface and the inner wall of the light source cavity, propagates inside the light-transmitting member, and finally emits the light-transmitting member through the second conical surface; the reflective member is used to receive the light emitted by the light-transmitting member, and reflect the light through the inner wall of the reflective cavity, so that the light is emitted to the outside. Based on the above arrangement, the energy of the side light path can be controlled through the inner wall of the light source cavity, so that the emission angle of the light can be effectively controlled, and the propagation direction of the light at the bottom wall of the light source cavity can be changed through the first conical surface and the second conical surface, and the angle of the light emitted from the light-transmitting member can be changed, so that the control of the energy of the middle light path can be achieved, and then the problem of severe glare caused by the high brightness in the local area due to the limited light output area can be effectively alleviated. In addition, the reflection effect of the reflective element can further control the light emitted by the translucent element, and the propagation direction of the light can be adjusted by the reflection effect of the reflective element, so that the size of the secondary light spot can be adjusted, so as to improve the uniformity of the light spot and achieve a certain anti-glare effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A schematic diagram of the structure of the anti-glare optical structure disclosed in the embodiment of the present application;
[0014] Figure 2 This is a schematic diagram of the anti-glare optical structure and LED structure disclosed in the embodiments of the present application.
[0015] Description of reference numerals:
[0016] 100-light-transmitting member; 110-light source cavity; 120-first conical surface; 130-second conical surface;
[0017] 200-reflective element; 210-reflective cavity; 211-first end; 212-second end;
[0018] 300-light source;
[0019] 400-Circuit Board. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0021] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0022] The embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.
[0023] refer to Figure 1 and Figure 2 The embodiment of the present application discloses an anti-glare optical structure, and the disclosed anti-glare optical structure includes a light-transmitting element 100 and a light-reflecting element.
[0024] The light-transmitting member 100 is used to transmit the light emitted by the light source 300, and can play a certain role in regulating the propagation direction of the light; the reflective member 200 is used to reflect the light, and it can also change the propagation direction of the light. In some embodiments, the reflective member 200 is disposed at one end of the light-transmitting member 100 along the extension direction of its own optical axis. Specifically, the reflective member 200 can be located in the light-emitting area of the light-transmitting member 100, so as to reflect the light emitted by the light-transmitting member 100.
[0025] Exemplarily, the light-transmitting element 100 may be a lens, or other light-transmitting structures; the reflective element may be a reflector, specifically a secondary reflector, etc. When the reflective element is a secondary reflector, it may have a variable curvature, so that the size of the secondary light spot may be controlled by the variable curvature, and since the light-emitting area of the secondary reflector is relatively large, the maximum brightness of the light-emitting area may be significantly reduced. Therefore, when the anti-glare optical structure in the embodiment of the present application is applied to a lamp, the lamp may have a high luminous flux and a low brightness effect, so as to achieve the effect of direct vision of the human eye.
[0026] In some embodiments, a light source cavity 110 is provided at one end of the light-transmitting member 100 away from the reflective member 200, and the light source cavity 110 can be used to accommodate the light source 300. Of course, it can also be used to be arranged opposite to the light source 300. In this way, the light source cavity 110 can control the light emitted by the light source 300, so that the light emitted by the light source 300 can avoid entering the light-transmitting member 100 through each of the light source cavity 110. Exemplarily, the light-transmitting member 100 can be an annular member, in which case the light source cavity 110 can be an annular cavity. In addition, the light source 300 can be connected to the circuit board 400 to supply energy to the light source 300 through the circuit board 400 and control the light source 300.
[0027] Specifically, the inner wall of the light source cavity 110 is the first incident surface, and the outer wall of the light source cavity 110 is the first reflective surface. Based on this, the light emitted by the light source 300 can enter the side area of the light-transmitting member 100 through the first incident surface, and the light can propagate in the side area of the light-transmitting member 100. When the light propagates to the outer wall of the light source cavity 110, it is reflected by the first reflective surface, so that the propagation direction of the light changes, thereby changing the propagation direction of the light in the light-transmitting member 100.
[0028] Furthermore, the bottom wall of the light source cavity 110 is recessed toward the reflector 200 along the extension direction of the optical axis to form a first conical surface 120, which is the second incident surface. Based on this, the light emitted by the light source 300 can enter the middle area of the light-transmitting member 100 through the second incident surface, and the light can propagate in the middle area of the light-transmitting member 100. Exemplarily, the first conical surface 120 can be a conical surface, and of course, it can also be a conical surface of other shapes, which is not specifically limited here.
[0029] The end surface of the light-transmitting member 100 facing the reflective member 200 is recessed away from the reflective member 200 along the extending direction of the optical axis to form a second conical surface 130, which is an emission surface. Based on this, the light reflected by the first reflecting surface is emitted toward the reflective cavity 210 through the second conical surface 130, and the emission area is located in the peripheral area of the second conical surface 130 (that is, the side area of the light-transmitting member 100), and this part of the light passes through the reflective cavity 210 and then is emitted outward.
[0030] The reflective member 200 is provided with a reflective cavity 210, the second conical surface 130 faces the reflective cavity 210, and the inner sidewall of the reflective cavity 210 is the second reflective surface. The area emitted through the middle area of the second conical surface 130 is located in the middle area of the second conical surface 130 (i.e., the middle area of the light-transmitting member 100), and this part of the light is emitted toward the inner sidewall of the reflective cavity 210, and is reflected by the second reflective surface and then emitted outward.
[0031] In the embodiment of the present application, the light emitted by the light source 300 can be transmitted through the light-transmitting member 100, and in the process of transmitting the light through the light-transmitting member 100, the light enters the light-transmitting member 100 through the first conical surface 120 and the inner wall of the light source cavity 110, propagates inside the light-transmitting member 100, and finally emits the light-transmitting member 100 through the second conical surface 130; the reflective member 200 is used to receive the light emitted by the light-transmitting member 100, and reflects the light through the inner wall of the reflective cavity so that the light is emitted to the outside. Based on the above arrangement, the energy of the side light path can be controlled by the inner wall of the light source cavity 110, so that the emission angle of the light can be effectively controlled, and the propagation direction of the light at the bottom wall of the light source cavity 110 can be changed by the first conical surface 120 and the second conical surface 130, and the angle of the light emitted from the light-transmitting member 100 can be changed, so that the control of the energy of the middle light path can be achieved, and then the problem of high brightness in the local area due to the limited light output area and severe glare can be effectively alleviated.
[0032] In addition, the reflection effect of the reflective element can further control the light emitted by the transparent element 100, and the propagation direction of the light is adjusted by the reflection effect of the reflective element 200, so that the size of the secondary light spot can be adjusted, so as to improve the uniformity of the light spot and achieve a certain anti-glare effect.
[0033] In some embodiments, the generatrix of the first conical surface 120 may be a curve. With this arrangement, the light emitted by the light source 300 can appropriately change the transmission deflection angle (such as the refraction angle, etc.) when transmitting through the first conical surface 120, so that the propagation direction of the light in the light-transmitting member 100 can be adaptively adjusted, and then the angle of the light emitted through the light-transmitting member 100 can be adjusted, which will eventually affect the angle of the light reflected through the reflective member 200.
[0034] Furthermore, the first conical surface 120 may be convex toward the inner side of the light source cavity 110. Specifically, at least a portion of the first conical surface 120 is arched toward the light source cavity 110. Compared with the form in which the generatrix of the first conical surface 120 is a straight line, this form can expand the deflection angle of the light when passing through the first conical surface 120, thereby being helpful in reducing the brightness of the middle area of the light-transmitting member 100.
[0035] Of course, the first conical surface 120 can also be recessed away from the inner side of the light source cavity 110. Specifically, at least a portion of the first conical surface 120 is arched away from the light source cavity 110. This form can also adaptively adjust the deflection angle of light when passing through the first conical surface 120 to meet the needs of different working conditions.
[0036] In a more specific embodiment, the generatrix of the first conical surface 120 may be in the shape of an arc. Of course, it may also be in the shape of an irregular arc, or a wave, etc., which may be specifically set according to actual working conditions.
[0037] In other embodiments, the generatrix of the first conical surface 120 is not limited to a curve, but may also be a straight line.
[0038] Exemplarily, the first tapered surface 120 may be a conical surface or the like.
[0039] In the embodiment of the present application, the generatrix of the second conical surface 130 can be a straight line. In this case, when the light is emitted from the second conical surface 130, it can be helpful to improve the uniformity of light distribution, so as to alleviate the problem of brightness concentration caused by light convergence and affecting the direct vision effect of the human eye.
[0040] Exemplarily, the second tapered surface 130 may be a conical surface or the like.
[0041] In some embodiments, the axis of the first conical surface 120 and the axis of the second conical surface 130 are both collinear with the optical axis of the light-transmitting member 100. This arrangement can help improve the uniformity of light distribution in various circumferential regions of the light-transmitting member 100, thereby alleviating the problem of light convergence leading to concentrated brightness and affecting the direct vision effect of the human eye.
[0042] In some embodiments, a first angle between a generatrix of the first conical surface 120 and the axis of the first conical surface 120 is less than or equal to a second angle between a generatrix of the second conical surface 130 and the axis of the second conical surface 130. Specifically, the first angle can be regarded as an opening angle of the first conical surface 120, and the second angle can be regarded as an opening angle of the second conical surface 130.
[0043] Based on the above arrangement, after the light enters the anti-glare optical structure, it is emitted through the second conical surface 130, and the light is reflected by the inner wall of the reflective cavity 210, which can improve the light-emitting angle of the light-transmitting element 100 to a certain extent, thereby increasing the illumination area from which the light is emitted, thereby improving the lighting effect and providing a larger illumination range.
[0044] In some embodiments, the inner wall of the light source cavity 110 may be a cylindrical surface, the axis of which is collinear with the optical axis of the light-transmitting member 100. This arrangement can help improve the uniformity of light distribution when it passes through the cylindrical surface, thereby alleviating the problem of light convergence leading to concentrated brightness and affecting the direct vision effect of the human eye; and can also expand the contact area between the light source 300 and the light-transmitting member 100, thereby increasing the light path energy on the side of the light-transmitting member 100.
[0045] In addition, the outer side wall of the light-transmitting member 100 may be a frustum, and the cross-sectional area of the frustum gradually increases from the light-transmitting member 100 to the reflective member 200. Based on this configuration, the light in the side area of the light-transmitting member 100 can be reflected by the outer side wall of the light-transmitting member 100, so that the light can change its propagation direction and be reflected to propagate toward the reflective cavity 210, thereby effectively controlling the light path energy.
[0046] In some embodiments, the light-transmitting member 100 and the reflective member 200 are fixedly connected to ensure the firmness and stability of the entire anti-glare optical structure. For example, the end of the light-transmitting member 100 and the end of the reflective member 200 can be fixedly connected by gluing, welding, riveting, etc. to ensure the firmness of the fixed connection.
[0047] In other embodiments, the anti-glare optical structure may be an integrally formed structure, in which case the firmness and stability of the entire anti-glare optical structure can be ensured, while the processing and manufacturing thereof can be facilitated, thereby shortening the processing and manufacturing cycle.
[0048] In some embodiments, the inner side wall of the reflective cavity 210 may be a frustum, and the cross-sectional area of the frustum gradually increases in the direction from the reflective member 200 away from the light-transmitting member 100. With this arrangement, the light entering through the first conical surface 120 and emitted from the second conical surface 130 can be directed toward the inner side wall of the reflective cavity 210 and reflected by the inner side wall of the reflective cavity 210, and the light reflected through the outer side wall of the light-transmitting member 100 and emitted from the second conical surface 130 can be effectively avoided to prevent interference with the propagation direction of this part of the light.
[0049] Along the extension direction of the optical axis of the light-transmitting member 100, the reflective cavity 210 has a first end 211 adjacent to the light-transmitting member 100 and a second end 212 away from the light-transmitting member 100, wherein the thickness of the side wall of the reflective cavity 210 at the first end 211 is greater than the thickness of the side wall at the second end 212. Through this arrangement, the area that can be covered by the light reflected from the inner side wall of the reflective cavity 210 can be expanded, and the illumination effect can be improved to a certain extent.
[0050] In the embodiment of the present application, the reflective element 200 may be a secondary reflector. Of course, it may also be in other forms, which are not specifically limited here.
[0051] Based on the above anti-glare optical structure, the embodiment of the present application further discloses a lamp, which includes a light source 300 and the above anti-glare optical structure, wherein at least a portion of the light source 300 is disposed in the light source cavity 110, or the light source 300 is disposed opposite to the accommodating cavity 110, so that the light emitted by the light source 300 can enter the light source cavity 110 and propagate through the anti-glare optical structure. Of course, the anti-glare optical structure is not limited to application to lamps, but can also be applied to other optical devices, and the specific application scenarios and working conditions are not limited.
[0052] In summary, the embodiments of the present application adopt the form of a combined lens and control different light paths through different lenses (i.e., the light-transmitting member 100 and the reflective member 200). Specifically, the side structure of the light-transmitting member 100 can control the light path energy of the side, and can effectively control the angle of the lamp; and, the top structure of the light-transmitting member 100 is used to change the propagation direction of the light so that the light can hit the reflective member 200. When the reflective member 200 is a secondary reflector, the size of the secondary light spot can also be controlled by changing the curvature of the secondary reflector. Since the area of the secondary reflector is large enough, it can significantly reduce the maximum brightness of the lamp surface, thereby achieving the goal of high luminous flux and low brightness of the lamp, so as to achieve the effect of direct vision of the human eye, and therefore, the problem of glare can be solved.
[0053] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. An anti-glare optical structure, characterized in that: include: A light-transmitting member (100) and a light-reflecting member (200), wherein the light-reflecting member (200) is arranged at one end of the light-transmitting member (100) along the extension direction of its own optical axis; A light source cavity (110) is provided at one end of the light-transmitting element (100) that is away from the light-reflecting element (200); the inner side wall of the light source cavity (110) is a first incident surface, and the outer side wall of the light source cavity (110) is a first reflecting surface; The bottom wall of the light source cavity (110) is recessed along the extension direction of the optical axis toward the reflector (200) to form a first conical surface (120), and the first conical surface (120) is a second incident surface; The end surface of the light-transmitting element (100) facing the light-reflecting element (200) is recessed in a direction away from the light-reflecting element (200) along the extension direction of the optical axis to form a second conical surface (130), and the second conical surface (130) is an emission surface; The reflective element (200) is provided with a reflective cavity (210), the second conical surface (130) faces the reflective cavity (210), and the inner side wall of the reflective cavity (210) is a second reflective surface.
2. The anti-glare optical structure according to claim 1, characterized in that: The generatrix of the first conical surface (120) is a curve; And / or, the generatrix of the second conical surface (130) is a straight line.
3. The anti-glare optical structure according to claim 2, characterized in that: The first conical surface (120) protrudes toward the inner side of the light source cavity (110).
4. The anti-glare optical structure according to claim 1, characterized in that: The axis of the first conical surface (120) and the axis of the second conical surface (130) are both colinear with the optical axis of the light-transmitting element (100).
5. The anti-glare optical structure according to claim 4, characterized in that: A first angle between a generatrix of the first conical surface (120) and the axis of the first conical surface (120) is less than or equal to a second angle between a generatrix of the second conical surface (130) and the axis of the second conical surface (130).
6. The anti-glare optical structure according to claim 1, characterized in that: The inner side wall of the light source cavity (110) is a cylindrical surface, and the axis of the cylindrical surface is colinear with the optical axis of the light-transmitting element (100); And / or, the outer side wall of the light-transmitting element (100) is a frustum, and the cross-sectional area of the frustum gradually increases in the direction from the light-transmitting element (100) to the reflective element (200).
7. The anti-glare optical structure according to claim 1, characterized in that: The light-transmitting element (100) and the light-reflecting element (200) are fixedly connected; Alternatively, the anti-glare optical structure is an integrally formed structure.
8. The anti-glare optical structure according to claim 1, characterized in that: The inner side wall of the reflective cavity (210) is a frustum, and the cross-sectional area of the frustum gradually increases in a direction from the reflective element (200) away from the light-transmitting element (100).
9. The anti-glare optical structure according to claim 1 or 8, characterized in that: Along the extension direction of the optical axis of the light-transmitting member (100), the reflective cavity (210) has a first end (211) adjacent to the light-transmitting member (100) and a second end (212) away from the light-transmitting member (100); the side wall thickness of the reflective cavity (210) at the first end (211) is greater than the side wall thickness at the second end (212).
10. A lamp, characterized in that: It comprises a light source (300) and the anti-glare optical structure according to any one of claims 1 to 9; At least part of the light source (300) is disposed in the light source cavity (110), or the light source (300) and the accommodating cavity (110) are disposed opposite to each other.