CN216113850U - Total internal reflection lens, light guide mechanism and searchlight - Google Patents
Total internal reflection lens, light guide mechanism and searchlight Download PDFInfo
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- CN216113850U CN216113850U CN202122085590.0U CN202122085590U CN216113850U CN 216113850 U CN216113850 U CN 216113850U CN 202122085590 U CN202122085590 U CN 202122085590U CN 216113850 U CN216113850 U CN 216113850U
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Abstract
The utility model relates to the technical field of lenses, and provides a total internal reflection lens, a light guide mechanism and a searchlight. The total internal reflection lens provided by the utility model can improve the irradiation distance of a light source; the collimated parallel light beams are reflected by the second reflecting surface and then emitted from the emergent surface, so that the transmission direction of light is changed, and dazzling caused by the fact that a light source directly irradiates human eyes can be avoided; meanwhile, the integrated design can reduce the loss in the light transmission process and further improve the efficiency.
Description
Technical Field
The utility model belongs to the technical field of lenses, and particularly relates to a total internal reflection lens, a light guide mechanism and a searchlight.
Background
The searchlight is a device which has a powerful light source and a concave mirror capable of intensively projecting light in a specific direction and is used for remote illumination and searching.
The size of a light spot irradiated on an object cannot be adjusted when the existing searchlight is used for long-distance illumination, and one method for adjusting the size of the light spot is to adjust the size of the light spot by adjusting the distance between the lamp and the irradiated object, so that the method is troublesome to use, can be adjusted only by needing a larger space, cannot adjust the light spot with the required size in a small space, and influences the long-distance illumination effect; meanwhile, the conventional searchlight usually focuses light emitted from a light source and then directly projects the light, so that the light can cause dazzling when the light irradiates human eyes.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a total internal reflection lens to solve the technical problems that the existing searchlight has poor long-distance illumination effect and causes glaring feeling to human eyes.
In order to achieve the purpose, the utility model adopts the technical scheme that: the total internal reflection lens comprises an incident end part and an emergent end part, wherein the incident end part is a rotating body, the diameter of the incident end part is gradually increased from the direction far away from the emergent end part to the direction close to the emergent end part, the side wall surface of the incident end part is a first reflecting surface, the first reflecting surface is used for collimating light emitted by a light source, and one end, far away from the emergent end part, of the incident end part is provided with an incident cavity for placing the light source; the emergent end part is a right-angled triangle and comprises a second reflecting surface and an emergent surface, the emergent surface is perpendicular to the end face of the incident end part, and the second reflecting surface is obliquely arranged on the emergent surface.
Further, an included angle between the second reflecting surface and the end face of the incident end portion is a lens inclination angle, and the lens inclination angle ranges from 48 degrees to 50 degrees.
The utility model also provides a light guide mechanism, which comprises a first lens group, wherein the first lens group comprises a plurality of total internal reflection lenses, and the total internal reflection lenses of the first lens group are annularly distributed at intervals to form a first annular body.
Further, the light guide mechanism further comprises a second lens group, the second lens group comprises a plurality of total internal reflection lenses, and the plurality of total internal reflection lenses of the second lens group are annularly distributed at intervals to form a second annular body.
Further, the second ring-shaped body and the first ring-shaped body are concentric.
Further, the lens tilt angle of the first lens group is smaller than the lens tilt angle of the second lens group.
Further, the lens tilt angles of adjacent total internal reflection lenses of the first lens group are different.
Further, the lens tilt angles of adjacent total internal reflection lenses of the second lens group are different.
The utility model also provides a searchlight which comprises a lampshade, the light guide mechanism and a plurality of light sources, wherein each light source is arranged in the incident cavity of each total internal reflection lens, and the light guide mechanism is arranged in the lampshade.
The total internal reflection lens provided by the utility model collimates the light emitted by the light source through the first reflecting surface, converts the divergent light emitted by the light source into parallel light beams and emits the parallel light beams, and can improve the irradiation distance of the light source; the collimated parallel light beams are reflected by the second reflecting surface and then emitted from the emergent surface, so that the transmission direction of light is changed, and dazzling caused by the fact that a light source directly irradiates human eyes can be avoided; meanwhile, the integrated design can reduce the loss in the light transmission process and further improve the efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a TIR lens according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light guide mechanism according to an embodiment of the present invention;
FIG. 3 is a partial schematic view of a searchlight according to an embodiment of the utility model;
FIG. 4 is a schematic diagram of light transmission of a TIR lens according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-a total internal reflection lens; 11-an incident end; 111-a first reflective surface; 112-an incident cavity; 12-an exit end; 121-a second reflective surface; 122-an exit face; 2-a light guide mechanism; 21-a first lens group; 22-a second lens group; 3-a lampshade; 4-light source.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, a total internal reflection lens 1 according to the present invention is now described, where the total internal reflection lens 1 includes an incident end portion 11 and an exit end portion 12, the incident end portion 11 is a rotating body, a diameter of the incident end portion 11 gradually increases from a direction away from the exit end portion 12 to a direction close to the exit end portion 12, a side wall surface of the incident end portion 11 is a first reflection surface 111, the first reflection surface 111 is used for collimating light emitted by a light source 4, and an incident cavity 112 for placing the light source 4 is disposed at one end of the incident end portion 11 away from the exit end portion 12; the emission end portion 12 is a right triangle, and includes a second reflection surface 121 and an emission surface 122, the emission surface 122 is perpendicular to the end surface of the incident end portion 11, and the second reflection surface 121 is provided obliquely to the emission surface 122. In specific implementation, referring to fig. 4, the incident end 11 is a total internal reflection structure, the light source 4 is located in the incident cavity 112, light emitted by the light source 4 is reflected by the first reflecting surface 111 of the TIR structure and then emitted to the second reflecting surface 121 of the exit end 12 in the form of parallel light beams, and the light is reflected by the second reflecting surface 121 and then emitted from the exit surface 122 to the external irradiation surface.
The total internal reflection lens 1 provided by the utility model collimates the light emitted by the light source 4 through the first reflecting surface 111, converts the divergent light emitted by the light source 4 into parallel light beams to be emitted, and can improve the irradiation distance of the light source 4; the collimated parallel light beams are reflected by the second reflecting surface 121 and then emitted from the emitting surface 122, so that the transmission direction of light is changed, and dazzling caused by the fact that the light source 4 directly irradiates human eyes can be avoided; meanwhile, the integrated design can reduce the loss in the light transmission process and further improve the efficiency.
In one embodiment, the angle between the second reflecting surface 121 and the end surface of the incident end portion 11 is a lens tilt angle, and the lens tilt angle is in a range of 48 ° to 50 °. In specific implementation, the prisms with different lens inclination angles can reflect light rays with different angles, and the farther the irradiation distance of the light source 4 is, the smaller the required lens inclination angle is (approaching to 45 °); the larger the required light spot, the larger the required lens inclination angle, and the total internal reflection lens 1 with different lens inclination angles can be selected according to actual needs. Preferably, when the irradiation distance is designed to be 1M, the inclination angle of the lens is in the range of 48 to 50 °.
The present invention further provides a light guiding mechanism 2, referring to fig. 2, including a first lens assembly 21, the first lens assembly 21 includes a plurality of tir lenses 1 as described above, and the tir lenses 1 of the first lens assembly 21 are annularly distributed at intervals to form a first annular body. The light guide mechanism 2 provided in the embodiment of the present invention has the total internal reflection lens 1 provided in any one of the above embodiments, and therefore, all the beneficial effects of the total internal reflection lens 1 provided in any one of the above embodiments are not described herein again. The plurality of total internal reflection lenses 1 are distributed at intervals in an annular shape, so that the plurality of total internal reflection lenses 1 of the first lens group 21 can form light spots, and the illumination brightness is improved. In specific implementation, different control modes may be selected according to actual needs, for example, the switches of the total internal reflection lenses 1 of the first lens group 21 may be individually controlled, and when the required brightness and intensity are small, only one of the total internal reflection lenses 1 may be selected to transmit the light of the light source 4; when higher light brightness and intensity are needed, a plurality of total internal reflection lenses 1 can be selected to transmit light of a plurality of corresponding light sources 4, so that the brightness is improved; it can be understood that, when a plurality of total internal reflection lenses 1 are selected for transmission, a plurality of adjacent total internal reflection lenses 1 may be selected, or a plurality of total internal reflection lenses 1 arranged at intervals and distributed annularly may be selected, and the selection may be specifically performed according to actually required brightness of light and shape and size of light spots; when higher brightness and intensity are desired, all TIR lenses 1 in the first lens group 21 may be turned on.
In an embodiment, the light guide mechanism 2 further includes a second lens group 22, the second lens group 22 includes a plurality of tir lenses 1, and the tir lenses 1 of the second lens group 22 are annularly and intermittently distributed to form a second annular body. In specific implementation, different control modes may be selected according to actual needs, for example, the switches of the total internal reflection lenses 1 of the second lens group 22 may be individually controlled, and when the required brightness and intensity are small, only one of the total internal reflection lenses 1 may be selected to transmit the light of the light source 4; when higher light brightness and intensity are needed, a plurality of total internal reflection lenses 1 can be selected to transmit light of a plurality of corresponding light sources 4, so that the brightness is improved; it can be understood that, when a plurality of total internal reflection lenses 1 are selected for transmission, a plurality of adjacent total internal reflection lenses 1 may be selected, or a plurality of total internal reflection lenses 1 arranged at intervals and distributed annularly may be selected, and the selection may be specifically performed according to actually required brightness of light and shape and size of light spots; when higher brightness and intensity are desired, all TIR lenses 1 in the second lens group 22 may be turned on. When the optical lens is used, the second lens group 22 may be disposed outside the first lens group 21, and the switch of the first lens group 21 and/or the second lens group 22 may be controlled according to actual requirements, so as to obtain different light spot effects. For example, when the first lens group 21 and the second lens group 22 are simultaneously opened, the diameter of the two superposed light spots is increased. Preferably, the second ring-shaped body and the first ring-shaped body are identical in structure and concentric. In this manner, the light spots of the first lens group 21 and the second lens group 22 can be made to overlap each other.
In one embodiment, the lens tilt angle of the first lens group 21 is smaller than the lens tilt angle of the second lens group 22. Because the larger the inclination angle of the lens is, the larger the light spot is, the inclination angle of the lens of the first lens group 21 is smaller than the inclination angle of the lens of the second lens group 22, and the light spot of the second light guide mechanism 2 is larger than the light spot of the first light guide mechanism 2, when the small light spot is needed, the first light guide mechanism 2 can be controlled to be opened, the second light guide mechanism 2 is controlled to be closed, and the small light spot is formed through the first light guide mechanism 2; when a large light spot is needed, the first light guide mechanism 2 can be controlled to be closed, the second light guide mechanism 2 is controlled to be opened, and the large light spot is formed through the second light guide mechanism 2; when a bigger and brighter light spot is needed, the first light guide mechanism 2 and the second light guide mechanism 2 can be opened simultaneously, and the bigger light spot is formed simultaneously through the first light guide mechanism 2 and the second light guide mechanism 2.
In an embodiment, the lens tilt angles of adjacent tir lenses 1 of the first lens group 21 are different. In specific implementation, the tir lens 1 of the first lens group 21 may have two different lens tilt angles, and the lens tilt angles between adjacent tir lenses 1 are different, and when in use, the on-off of the tir lens 1 with different lens tilt angles may be controlled to change the light spot of the stroke of the first lens group 21, for example, two different light spots may be obtained by opening all the tir lenses 1 with the same lens tilt angle in the first lens group 21, and when all the tir lenses 1 with different lens tilt angles in the first lens group 21 are opened, a light spot with higher brightness may be obtained. It is understood that the tir lens 1 of the first lens group 21 may have a plurality of different lens tilt angles, and the tir lens 1 with the same lens tilt angle may be controlled by a switch, and the tir lens 1 with different lens tilt angles is selected to be opened according to actual requirements to obtain the required light spot.
In one embodiment, the lens tilt angles of adjacent tir lenses 1 of the second lens group 22 are different. In specific implementation, the tir lens 1 of the second lens group 22 may also have two different lens tilt angles, and the lens tilt angles between adjacent tir lenses 1 are different, and when in use, the on-off of the tir lens 1 with different lens tilt angles may be controlled to change the light spot of the stroke of the second lens group 22, for example, two different light spots may be obtained by opening all the tir lenses 1 with the same lens tilt angle in the second lens group 22, and when all the tir lenses 1 with different lens tilt angles in the second lens group 22 are opened, a light spot with higher brightness may be obtained. It is understood that the tir lens 1 of the second lens group 22 may have a plurality of different lens tilt angles, and the tir lenses 1 with the same lens tilt angle may be controlled by a switch, and the tir lenses 1 with different lens tilt angles are selected to be opened according to actual requirements to obtain the required light spots.
The present invention further provides a searchlight, referring to fig. 3, comprising a lamp housing 3, a light guide mechanism 2 as described above, and a plurality of light sources 4, wherein each light source 4 is disposed in the incident cavity 112 of each tir lens 1, and the light guide mechanism 2 is disposed in the lamp housing 3. The searchlight provided by the embodiment of the utility model has the light guide mechanism 2 provided by any one of the embodiments, so that all the beneficial effects of the light guide mechanism 2 provided by any one of the embodiments are achieved, and the details are not repeated herein. In specific implementation, the rear cover of the lamp housing 3 may be made of a high-reflectivity material, such as aluminum plating, so as to reflect light emitted from the reflector, thereby improving the overall light extraction efficiency.
The searchlight provided by the utility model has the advantages that the light emitted by the light source 4 is collimated through the first reflecting surface 111, the divergent light emitted by the light source 4 is converted into parallel beams to be emitted, and the irradiation distance of the light source 4 can be increased; the collimated parallel light beams are reflected by the second reflecting surface 121 and then emitted from the emitting surface 122, so that the transmission direction of light is changed, and dazzling caused by the fact that the light source 4 directly irradiates human eyes can be avoided; meanwhile, the integrated design of the light guide mechanism 2 can reduce the loss in the light transmission process, and the efficiency is further improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The total internal reflection lens is characterized by comprising an incident end part and an emergent end part, wherein the incident end part is a rotating body, the diameter of the incident end part is gradually increased from the direction far away from the emergent end part to the direction close to the emergent end part, the side wall surface of the incident end part is a first reflecting surface, the first reflecting surface is used for collimating light emitted by a light source, and one end, far away from the emergent end part, of the incident end part is provided with an incident cavity for placing the light source; the emergent end part is a right-angled triangle and comprises a second reflecting surface and an emergent surface, the emergent surface is perpendicular to the end face of the incident end part, and the second reflecting surface is obliquely arranged on the emergent surface.
2. The tir lens of claim 1, wherein said second reflecting surface is at a lens tilt angle with respect to said end surface of said entrance end, said lens tilt angle being in the range of 48 ° to 50 °.
3. A light guide mechanism, comprising a first lens group, wherein the first lens group comprises a plurality of tir lenses as claimed in any of claims 1 to 2, and the plurality of tir lenses of the first lens group are annularly spaced to form a first annular body.
4. The light guide mechanism of claim 3, further comprising a second lens group, wherein the second lens group comprises a plurality of tir lenses, and wherein the plurality of tir lenses of the second lens group are annularly spaced to form a second annular body.
5. The light guide mechanism of claim 4, wherein the second annular body and the first annular body are concentric.
6. The light guide mechanism of claim 4, wherein the lens tilt angle of the first lens group is smaller than the lens tilt angle of the second lens group.
7. A light guide mechanism according to claim 3 wherein the lens tilt angles of adjacent tir lenses of the first lens group are different.
8. The light guide mechanism of claim 4, wherein the lens tilt angles of adjacent total internal reflection lenses of the second lens group are different.
9. A floodlight comprising a housing, a light guide according to any of claims 3 to 8, and a plurality of light sources, each light source being disposed within the entrance cavity of each TIR lens, the light guide being disposed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085590.0U CN216113850U (en) | 2021-08-31 | 2021-08-31 | Total internal reflection lens, light guide mechanism and searchlight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085590.0U CN216113850U (en) | 2021-08-31 | 2021-08-31 | Total internal reflection lens, light guide mechanism and searchlight |
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| CN216113850U true CN216113850U (en) | 2022-03-22 |
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| CN202122085590.0U Active CN216113850U (en) | 2021-08-31 | 2021-08-31 | Total internal reflection lens, light guide mechanism and searchlight |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115218135A (en) * | 2022-06-30 | 2022-10-21 | 杭州照相机械研究所有限公司 | LED multichannel light source system for medical detector |
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2021
- 2021-08-31 CN CN202122085590.0U patent/CN216113850U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115218135A (en) * | 2022-06-30 | 2022-10-21 | 杭州照相机械研究所有限公司 | LED multichannel light source system for medical detector |
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