CN214094317U - TIR lens with light blocking piece and lamp - Google Patents
TIR lens with light blocking piece and lamp Download PDFInfo
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- CN214094317U CN214094317U CN202120355910.7U CN202120355910U CN214094317U CN 214094317 U CN214094317 U CN 214094317U CN 202120355910 U CN202120355910 U CN 202120355910U CN 214094317 U CN214094317 U CN 214094317U
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Abstract
The utility model relates to the field of lighting technology, especially a TIR lens and lamps and lanterns with piece that is in light. The lens comprises a rotating body (1), wherein the rotating body (1) is provided with an incident area and an emergent area, the outer side wall between the emergent area and the incident area forms a total reflection surface (13), and the incident area comprises an incident port (10), an incident top surface (11) and an incident side surface (12); the light barrier comprises a convex structure (2) and a covering structure (3); the incidence area is provided with the convex structures (2), and the convex structures (2) extend from the incidence top surface (11) to the incidence port (10); the covering structure (3) can cover the incident top surface (11) and is used for blocking light rays from exiting the rotating body (1) through the incident top surface (11). The covering structure blocks off a second part of light. The convex structure blocks a third part of light. Avoiding the appearance of stray light circles and obviously improving the quality of the main light spot.
Description
Technical Field
The utility model relates to the field of lighting technology, especially a TIR lens and lamps and lanterns with piece that is in light.
Background
As shown in fig. 1 and 2, in a conventional TIR (Total internal reflection) lens, light emitted by a light source enters an incidence cavity from an incidence port 10 and is then divided into two parts, a first part of light 101 enters a Total reflection surface through a side wall 12 of the incidence cavity and then exits the lens, a second part of light 102 enters a central refraction region 14 through a top wall 11 of the incidence cavity and then exits the lens, and the two parts of light form a light spot together. In a lens with a half-intensity total angle of about 10 °, the first part of rays 101 passing through the reflecting surface are easier to control, but the second part of rays 102 passing through the refracting surface are harder to control. In some application scenarios, however, no light other than the main spot is required to highlight the high contrast. Since a part of the second part of light 102 is outside the main light spot, the contrast between the main light spot and the light outside the main light spot is low, and the use requirement cannot be met. In order to solve this problem, in the previous solution of the applicant, by providing a reflective layer on the incident top surface of the incident cavity or on the refractive surface in the middle of the emergent area, as shown in fig. 3 and 4, the light of the second part 102 that originally passes through the central refractive area of the lens is reflected back to the light source side by the reflective layer 200, so as to enhance the contrast between the main light spot and the light other than the main light spot.
However, in this embodiment, as shown in fig. 4, the third part of the light 103 is reflected by the side wall 12 of the incident cavity, then irradiates on the side wall 12 of the other side, and is reflected by the total reflection surface 13 and then exits the lens. The third portion of the light forms an iris beyond the main spot, as indicated by the arrow in fig. 5, which affects the quality of the main spot.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the problems that the existing TIR lens or the existing TIR lens with a reflecting layer in the prior art has a stray light ring and influences the quality of the main light spot, the TIR lens with the light blocking piece is provided, the second part of light and the third part of light can be blocked by the light blocking piece, the appearance of the stray light ring is avoided, and the quality of the main light spot is obviously improved.
In order to realize the purpose, the utility model discloses a technical scheme be:
a TIR lens with a light blocking piece comprises a rotating body, wherein the rotating body is provided with an incident area and an emergent area, the outer side wall between the emergent area and the incident area forms a total reflection surface, and the incident area comprises an incident port, an incident top surface and an incident side surface; the light blocking piece comprises a convex structure and a covering structure;
the incident region is provided with the convex structure, and the convex structure extends from the incident top surface to the incident port; the covering structure can cover the incident top surface and is used for blocking light rays from exiting the rotating body through the incident top surface.
The covering structure can be arranged in the incident region and also in the emergent region. The function of which is to block off the second part of the light. After the second part of light is blocked, the contrast ratio of the main light spot and other light is obviously improved. The convex structure is positioned in the incident area and can shield the third part of light. The third part of the light rays are the light rays which are reflected by the incident side wall and then irradiate the incident side wall again. After the second part of light and the third part of light are blocked, stray light rings are avoided, and the quality of the main light spot is obviously improved.
As the utility model discloses a preferred scheme, protruding structure includes first round platform shape structure, first round platform shape structure is kept away from one side of incident top surface is the top surface of round platform.
The truncated cone-shaped protruding structure is beneficial to reflecting the third part of light rays to the covering structure and is blocked by the covering structure.
As a preferable scheme of the utility model, the convex structure further comprises a second truncated cone-shaped structure; the bottom surface of the first truncated cone-shaped structure is connected with the top surface of the second truncated cone-shaped structure; the area of the bottom surface of the first truncated cone-shaped structure is smaller than that of the top surface of the second truncated cone-shaped structure.
And a second truncated cone-shaped structure capable of reflecting the light reflected by the first truncated cone-shaped structure to the side facing the light source again. The light directly irradiating the covering structure is reduced, and the temperature of the covering structure is favorably reduced. Avoiding excessive temperature inside the lens.
A plurality of truncated cone-shaped structures are sequentially arranged on one side of the second truncated cone-shaped structure close to the incident top surface to form a step truncated cone shape, namely a plurality of truncated cones are stacked into a step shape
As the preferred scheme of the utility model, protruding structure with the rotator coaxial setting.
The coaxial arrangement means that the rotation axis of the projection structure and the rotation axis of the rotating body are coaxial. The light spot light is uniformly distributed.
As the preferred scheme of the utility model, the surface of the convex structure is a frosted surface; the covering structure can block light from passing through.
The protruding structure may be made of an opaque material. When using opaque material, most light is absorbed, can lead to protruding structure temperature to rise, thereby causes the influence to protruding structure and influences whole facula effect. When the convex structure made of transparent material is used, part of the third part of light is reflected by the convex structure, and part of light still passes through the convex structure to form the stray light ring. Use low transparent material and set up the frosting on the surface, satisfying radiating prerequisite under, play better effect of blockking to third part light.
As a preferable aspect of the present invention, the covering structure is located between the projection structure and the incident top surface.
The covering structure is arranged in the incident area, and the assembly is convenient. But because the temperature is higher when the cover structure is used, the cover structure has certain influence on the light source.
As a preferred embodiment of the present invention, the covering structure is located in a central refraction area of the exit area.
The covering structure is arranged in the central refraction area, namely, the covering structure is positioned outside the central refraction area, and the heat of the covering structure is easily transferred to the space outside the lens, so that the heat dissipation is facilitated.
As a preferable scheme of the present invention, a coaxial through hole is provided in the middle of the rotating body, and the through hole communicates the incident region and the emergent region; the protruding structure and the covering structure are connected at the through hole.
Through set up the through-hole on the rotator for protruding structure can be connected through the mode of concatenation with the structure that covers, because rotator, protruding structure, the material of covering the structure are different, uses the mode of perforation concatenation, does benefit to the part combination with three different materials and makes up into a whole, does benefit to the stability that keeps overall structure.
As a preferred scheme of the utility model, the protruding structure is connected with the covering structure through a buckle; the buckle passes through the through hole.
Through the buckle connection, the connection of the protruding structure and the covering structure is more stable.
As a preferred scheme of the present invention, the protruding structure is provided with a plurality of first buckles and a plurality of second slots, and the covering structure is provided with a plurality of second buckles and a plurality of first slots; the first buckle is matched with the first clamping groove; the second buckle is matched with the second clamping groove.
The first buckle and the second clamping groove are arranged at intervals along the circumferential direction of the protruding structure; the second buckle and the first clamping groove are arranged at intervals along the circumferential direction of the covering structure.
The utility model also provides a lamp, include as above the TIR lens that is equipped with the piece that is in the light.
The TIR lens with the light blocking piece and the LED light source are combined into a lamp, so that high-quality light spots which are uniform in light spots, high in contrast with other light rays and free of parasitic light rings can be obtained. When the used LED light source is provided with a light-emitting surface, the fourth part of light emitted from the edge of the light source can be reflected by the first truncated cone-shaped structure of the convex structure and then reflected by the second truncated cone-shaped structure to face the light source direction, so that the light is prevented from being emitted from the emergent area, and further, the stray light ring formed by the fourth part of light is avoided.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the TIR lens with the light blocking piece of the utility model, by arranging the light blocking piece, wherein the light blocking piece comprises the covering structure and the protruding structure, the covering structure blocks the second part of light, and the contrast ratio of the main light spot and other light rays is improved; the convex structure blocks, absorbs or reflects the third part, and stray light formed by the third part of light is avoided. Thereby improving the quality of the main light spot.
2. The TIR lens with the light blocking piece of the utility model can use low transparent material by arranging the frosted surface on the surface of the protruding structure; under the condition of meeting the temperature requirement of an incident area, blocking the third part of light to the maximum extent; and the covering structure is arranged on the central refraction area in the middle of the emergent area, so that the heat dissipation of the covering structure is facilitated, and the temperature in the incident area is further reduced.
3. The utility model discloses a TIR lens with piece that is in the light is through setting up the through-hole on the rotator for protruding structure can be connected through the mode of concatenation with covering the structure, because rotator, protruding structure, the material that covers the structure are different, uses the mode of perforation concatenation, does benefit to the part combination with three different materials and is a whole, does benefit to the stability that keeps overall structure. Meanwhile, the assembly is facilitated, and the batch production is facilitated.
4. The utility model discloses a lamps and lanterns, through using foretell TIR lens that is equipped with the piece that is in the light, can use with LED light source, especially white light LED's COB light source combines, can obtain that the facula is even, and is high with other light contrast, and does not have the high-quality facula of miscellaneous light ring.
Drawings
Fig. 1 is a schematic structural diagram of a conventional TIR lens.
Fig. 2 is a schematic diagram of an optical path of a conventional TIR lens.
Fig. 3 is a schematic structural diagram of a TIR lens with a reflective layer in the prior art.
Fig. 4 is a schematic diagram of an optical path of a conventional TIR lens having a reflective layer.
Fig. 5 is a schematic diagram of a spot of a prior art TIR lens with a reflective layer.
In the figure, the arrows indicate the stray light ring. The scale in the figure is illuminance (Lux).
Fig. 6 is a schematic structural diagram of a TIR lens with a light barrier according to the present invention.
Fig. 7 is a schematic bottom view of the TIR lens with light blocking member according to the present invention.
Fig. 8 is a schematic top view of a TIR lens with a light barrier according to the present invention.
Fig. 9 is a schematic cross-sectional view at a-a of fig. 8.
Fig. 10 is an enlarged schematic view of fig. 9 at circle H.
Fig. 11 is a schematic optical path diagram of the TIR lens with a light blocking member according to the present invention.
Icon: 1-a rotator; 10-entrance port; 11-incident top surface; 12-the incident side; 13-total reflection surface; 14-a central refractive region; 2-a raised structure; 21-a first truncated cone shaped structure; 22-a second truncated cone shaped structure; 3-a covering structure;
100-a light source; 101-a first portion of light; 102-a second portion of light; 103-a third portion of light; 104-a fourth part-ray;
200-a reflective layer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, 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 for purposes of illustration only and are not intended to limit the invention.
Example 1
A TIR lens with a light blocking member comprises a rotating body 1, wherein the rotating body 1 is provided with an incident area and an emergent area, the outer side wall between the emergent area and the incident area forms a total reflection surface 13, and the incident area comprises an incident port 10, an incident top surface 11 and an incident side surface 12; the light barrier comprises a convex structure 2 and a covering structure 3;
the incident region is provided with the convex structure 2, and the convex structure 2 extends from the incident top surface 11 to the incident port 10; the cover structure 3 can cover the top entrance surface 11 for blocking light from exiting the rotating body 1 through the top entrance surface 11.
The protruding structure 2 comprises a first truncated cone-shaped structure 21, and one side, far away from the incident top surface 11, of the first truncated cone-shaped structure 21 is the top surface of a truncated cone. The protruding structure 2 is arranged coaxially with the rotating body 1.
The raised structure 2 further comprises a second truncated cone-shaped structure 22; the bottom surface of the first truncated cone-shaped structure 21 is connected to the top surface of the second truncated cone-shaped structure 22; the area of the bottom surface of the first truncated cone-shaped structure 21 is smaller than the area of the top surface of the second truncated cone-shaped structure 22. A plurality of truncated cone-shaped structures are sequentially arranged on one side of the second truncated cone-shaped structure 22 close to the incident top surface 11 to form a stepped truncated cone shape, that is, a plurality of truncated cones with equal height are stacked in a step shape.
The surface of the convex structure 2 is a frosted surface; the covering structure 3 is capable of blocking the passage of light.
The material of the protruding structure 2 may be opaque. When opaque materials are used, most of the light is absorbed, which may cause the temperature of the lens to rise, thereby affecting the light source. When the bump structure 2 made of low transparent material is used, a part of the third part of light is reflected by the bump structure 2, and a part of light still passes through the bump structure 2, so that the stray light ring is formed. Use low transparent material and set up the frosting on the surface, satisfying radiating prerequisite under, play better effect of blockking to third part light.
The cover structure 3 is located in the central refractive area 14 of the exit area.
The rotating body 1, the protruding structure 2 and the covering structure 3 are connected in an adhesive manner. Wherein the covering structure 3 may also be a light-reflecting surface.
In a further scheme, a coaxial through hole is formed in the middle of the rotating body 1, and the through hole is communicated with the incident area and the emergent area; the projection structure 2 and the cover structure 3 are connected at the through hole.
The convex structure 2 is connected with the covering structure 3 through a buckle; the buckle passes through the through hole. When the device is specifically arranged, the protruding structure 2 is provided with a plurality of first buckles and a plurality of second clamping grooves, and the covering structure 3 is provided with a plurality of second buckles and a plurality of first clamping grooves; the first buckle is matched with the first clamping groove; the second buckle is matched with the second clamping groove. The first buckle and the second clamping groove are arranged at intervals along the circumferential direction of the protruding structure 2; the second buckle with first draw-in groove edge cover structure 3 circumference interval sets up.
In another embodiment, the cover structure 3 is located between the protruding structure 2 and the top entrance surface 11, and is connected to the protruding structure 2 by bonding, and is connected to the top entrance surface 11 by bonding. The covering structure 3 is arranged in the incident area, and the assembly is convenient. But has a certain influence on the light source due to the high temperature of the cover structure 3 during use.
Example 2
A luminaire comprising a TIR lens provided with a barrier as described in any of embodiment 1.
The TIR lens with the light blocking piece and the LED light source are combined into a lamp, so that high-quality light spots which are uniform in light spots, high in contrast with other light rays and free of parasitic light rings can be obtained. As shown in fig. 11, when the LED light source is used and has a light-emitting surface, the fourth portion of light emitted from the edge of the light source can be reflected by the first truncated cone-shaped structure of the protrusion structure, and then reflected by the second truncated cone-shaped structure to the direction facing the light source, so as to avoid being emitted from the emitting area, and further avoid the stray light formed by the fourth portion of light.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A TIR lens provided with a light blocking member comprises a rotating body (1), wherein the rotating body (1) is provided with an incident area and an emergent area, the outer side wall between the emergent area and the incident area forms a total reflection surface (13), and the incident area comprises an incident port (10), an incident top surface (11) and an incident side surface (12); it is characterized in that the preparation method is characterized in that,
the light barrier comprises a convex structure (2) and a covering structure (3);
the incidence area is provided with the convex structures (2), and the convex structures (2) extend from the incidence top surface (11) to the incidence port (10);
the covering structure (3) can cover the incident top surface (11) and is used for blocking light rays from exiting the rotating body (1) through the incident top surface (11).
2. The TIR lens with a light barrier according to claim 1, wherein said protruding structure (2) comprises a first truncated cone-shaped structure (21), the side of said first truncated cone-shaped structure (21) facing away from said entrance top surface (11) being the top surface of a truncated cone.
3. The TIR lens provided with a flag according to claim 2, characterized in that the protruding structure (2) further comprises a second truncated cone-shaped structure (22); the bottom surface of the first truncated cone-shaped structure (21) is connected with the top surface of the second truncated cone-shaped structure (22); the area of the bottom surface of the first truncated cone-shaped structure (21) is smaller than that of the top surface of the second truncated cone-shaped structure (22).
4. The TIR lens provided with a flag according to claim 2, characterized in that the protruding structure (2) is arranged coaxially with the rotator (1).
5. The TIR lens provided with a flag according to claim 1, characterized in that the surface of the protruding structure (2) is a frosted surface; the covering structure (3) can block light from passing through.
6. TIR lens provided with a flag according to any of claims 1-5, characterized in that the covering structure (3) is located between the protruding structure (2) and the top entrance face (11).
7. TIR lens provided with a flag according to any of claims 1-5, characterized in that the covering structure (3) is located in the central refraction region (14) of the exit region.
8. The TIR lens with light barrier according to claim 7, wherein the middle of the rotator (1) is provided with a coaxial through hole, which communicates the entrance area and the exit area; the protruding structure (2) and the covering structure (3) are connected at the through hole.
9. The TIR lens with a flag according to claim 8, characterized in that the protruding structure (2) is snap-connected with the covering structure (3); the buckle passes through the through hole.
10. A luminaire comprising a TIR lens provided with a barrier as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120355910.7U CN214094317U (en) | 2021-02-06 | 2021-02-06 | TIR lens with light blocking piece and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120355910.7U CN214094317U (en) | 2021-02-06 | 2021-02-06 | TIR lens with light blocking piece and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214094317U true CN214094317U (en) | 2021-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120355910.7U Active CN214094317U (en) | 2021-02-06 | 2021-02-06 | TIR lens with light blocking piece and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214094317U (en) |
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2021
- 2021-02-06 CN CN202120355910.7U patent/CN214094317U/en active Active
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