CN101561114B - total reflection lens - Google Patents

Abstract

The invention provides a total reflection lens, which is a cone-shaped light-transmitting body with a wide upper part and a narrow lower part, wherein a through hole is arranged along the central axial direction, the upper end of the through hole is connected with an external expanding cone hole, the through hole can be used as a light inlet mirror surface, the external expanding cone hole can be used as a light outlet mirror surface, and one or more than one groove can be arranged at the external expanding cone hole, so that when a light source is arranged at the through hole of the total reflection lens, the most concentrated hard light at the center of the light source can enlarge the light distribution angle from the through hole and the external expanding cone hole without shielding, and the annular side light around the light source can guide the light to the external expanding cone hole for projection by means of the refraction of the external conical surfaces of the light inlet mirror surface and the total reflection lens, thereby achieving the light condensing effect, the luminous intensity and the ray light ray with high symmetry degree of; and the total reflection lens further provides light projected from the groove, so that the lens has the function of guiding the side illumination of the light.

Description

total reflection lens

technical field

The invention relates to a lens, in particular to a total reflection lens.

Background technique

Relevant known structures in the prior art, such as China Taiwan Patent Announcement No. M275418 "lens body with light uniformity effect": "comprising a light incident mirror surface and a light exit mirror surface, the light incident mirror surface and the light exit mirror surface are respectively arranged on the The opposite ends of the lens body, wherein the entrance mirror surface is a convex lens surface, and a plurality of light distribution mirrors are distributed on the light exit mirror surface, and these light distribution mirrors are arranged to form a mirror group; After incident on the mirror surface, light with uniform luminosity and chromaticity can be projected through the light distribution and mixing of the light distribution mirrors set on the light exit mirror surface.

The above-mentioned lens body is a solid lens, and mirrors with different curvatures are arranged on the opposite outer end surfaces, so that the light from the light source can be refracted by the solid lens to produce the effect of collecting light and then expanding it.

However, although the structure of this case can provide the effect of light source projection to generate uniform light; but because the lens body is a solid body, although it is provided for combination with a light-emitting diode (LED) light source with small volume and low heat generation, if it is used for a long time The use of the light source still has the main disadvantage of hindering the heat dissipation of the light source, which seriously affects the service life of the light source and shortens the service life of the light source.

Contents of the invention

The main purpose of the present invention is to provide a total reflection lens, the total reflection lens is mainly provided with a through hole in its central axis, which can be used as an air channel for the light source (light emitting diode) to communicate with the outside, so that the light source (light emitting diode) can Achieve rapid heat dissipation and effectively prolong its service life.

In order to achieve the above purpose, the present invention provides a total reflection lens, which is a tapered light-transmitting body with a wide top and a narrow bottom, and a through hole is arranged in the central axis thereof, and the upper end of the through hole is connected with an outwardly expanded tapered hole.

Furthermore, the total reflection lens is provided with one or more sectional grooves at the outer expansion cone hole, so that part of the light rays provided by the light source can also be projected from the sectional grooves to produce a side-illuminated effect for multiple total reflections. Lenses can be assembled as aggregates to effectively increase the display range of diffuse light and achieve the goal of high luminous efficiency.

Accordingly, after the light source (light emitting diode) is installed at the bottom of the total reflection lens provided by the present invention at the through hole, the light source (light emitting diode) can directly communicate with the outside through the through hole to provide the light source (light emitting diode) It has the characteristics of rapid heat dissipation and effectively prolongs its service life; in addition, the total reflection lens can completely scatter the illumination light of the auxiliary light source (light-emitting diode), gather it and emit it to the outside, so as to fully stimulate the illumination efficiency of the light source , to greatly improve the lighting efficiency and brightness, and to obtain fairly well-proportioned ray lighting. Furthermore, the total reflection lens of the present invention has the function of guiding the illuminating light to project from the side. When a plurality of total reflection lenses are assembled in one area, it is possible to The lighting is in a corresponding state, and the lighting of several total reflection lenses can be connected in series to form another multiple lighting components that can effectively expand the light-emitting components, increase the light distribution angle and display range, and have high brightness and uniformity without halo phenomenon. Enhancement of real performance.

Description of drawings

1 is a perspective view of a preferred embodiment 1 of a total reflection lens of the present invention;

Fig. 2 is a sectional view of a preferred embodiment 1 of the total reflection lens of the present invention;

Fig. 2-1 is a cross-sectional view derived from the first preferred embodiment of the total reflection lens of the present invention;

Figure 2-2 is a cross-sectional view derived from a preferred embodiment of the total reflection lens of the present invention;

Fig. 3 is a reference diagram of the use state of the preferred embodiment 1 of the total reflection lens of the present invention;

4 is a perspective view of a second preferred embodiment of the total reflection lens of the present invention;

Fig. 5 is a cross-sectional view of the second preferred embodiment of the total reflection lens of the present invention;

6 is a perspective view of a third preferred embodiment of the total reflection lens of the present invention;

Fig. 7 is a cross-sectional view of a third preferred embodiment of the total reflection lens of the present invention;

Fig. 8 is a perspective view of a fourth preferred embodiment of the total reflection lens of the present invention;

Fig. 9 is a cross-sectional view of a fourth preferred embodiment of the total reflection lens of the present invention;

Fig. 10 is a perspective view of a fifth preferred embodiment of the total reflection lens of the present invention;

Fig. 11 is a cross-sectional view of the fifth preferred embodiment of the total reflection lens of the present invention;

Fig. 12 is a perspective view of a sixth preferred embodiment of the total reflection lens of the present invention;

Fig. 13 is a cross-sectional view of the sixth preferred embodiment of the total reflection lens of the present invention;

Fig. 14 is a perspective view of a seventh preferred embodiment of the total reflection lens of the present invention;

Fig. 15 is a cross-sectional view of the seventh preferred embodiment of the total reflection lens of the present invention;

Fig. 16 is a perspective view of the eighth preferred embodiment of the total reflection lens of the present invention;

Fig. 17 is a cross-sectional view of the eighth preferred embodiment of the total reflection lens of the present invention;

Fig. 18 is a perspective view of a ninth preferred embodiment of the total reflection lens of the present invention;

Fig. 19 is a cross-sectional view of a ninth preferred embodiment of the total reflection lens of the present invention.

Explanation of reference signs

Conical light-transmitting body 10 through-hole 11

Taper hole with external expansion 12                              

Outer cone 13 Arc ring hole 14

Convex ring hole 15 light source 20

light 21

Detailed ways

Cooperate with the accompanying drawings of the preferred embodiments of the present invention to further describe as follows, in order to enable those skilled in the present invention to implement according to the description of this specification.

First of all, please refer to Fig. 1 to Fig. 3, which is a total reflection lens of the preferred embodiment 1 of the present invention, which is a tapered light-transmitting body 10 with a wide top and a narrow bottom, and a through hole is provided in its central axis. 11. The upper end of the through hole 11 is connected to the outwardly expanding tapered hole 12, and the through hole 11 is used as a light incident mirror, and the outwardly expanding tapered hole 12 can be used as a light emitting mirror. Accordingly, it constitutes the technical characteristics of the total reflection lens of the present invention. Wherein, the aforementioned included angle between the through hole 11 and the outwardly expanding tapered hole 12 is optimally set at about 130 degrees; Arc ring hole 14; or as shown in Figure 2-2, the outwardly expanded tapered hole 12 can be redesigned as a convex arc ring hole 15.

When the total reflection lens is provided with a light source 20 (which can be a kind of LED lamp) at its through hole 11, the light beam at the center of the light source 20 can be completely unshielded from the through hole 11 and the outward expansion cone hole 12 at a divergent angle. Lasing out has the function of expanding the light distribution angle, and the ring side light around the light source 20 can guide the light 21 again to the The outwardly expanded tapered hole 12 is projected out to achieve full utilization of light, and to increase the effect of concentrating light on the display range, luminous intensity, and ray light with a relatively high degree of uniformity.

Furthermore, as shown in Figures 4 to 11, it is an equivalent technical derivative embodiment of the total reflection lens structure of the present invention, which can be provided with symmetrical split grooves 121 at the outwardly expanding tapered hole 12 of the tapered light-transmitting body 10 According to this, the light source 20 located at the through hole 11 of the total reflection lens can realize the scattering of part of the light through the sectional groove 121 to achieve the brightness input function of providing local concentrated side illumination. As shown in Fig. 4 and Fig. 5, it is the total reflection lens of the second preferred embodiment of the present invention, wherein, the style and form of the aforementioned split groove 121 can be a kind of upward split groove with an opening; as shown in Fig. 6 and Fig. 7, It is the total reflection lens of the third preferred embodiment of the present invention, wherein the height of the opening groove can extend to the through hole 11; at the same time, as shown in Fig. 8 and Fig. 9, it is the fourth preferred embodiment of the present invention Total reflection lens, wherein, the split groove 121 can be a kind of U-shaped split groove; It can extend to the through hole 11.

In addition, as shown in Fig. 12 and Fig. 13, it is the total reflection lens of the sixth preferred embodiment of the present invention, the sectional grooves 121 arranged in the outwardly expanding tapered hole 12 of the total reflection lens can be in the form of equidistant or unequal intervals Set one or more than one, wherein, the opposite inner side walls of the sectional groove 121 are set in a parallel state; One or more split grooves 121 of the flared taper hole 12 of the lens can be arranged in an equidistant or unequal interval form, wherein the opposite inner wall of the split groove 121 is in a state of tapering and curved arc from the outside to the end of the through hole 11 Setting; the above-mentioned preferred embodiments of the present invention six and seven, in order to meet the needs of the description, four split grooves 121 are arranged at equidistant intervals at the outer expansion taper hole 12, this is not used to limit the number of split grooves 121 provided, as long as Setting the sectional groove 121 at the outwardly expanding tapered hole 12 should be covered within the technical scope of the present invention.

Simultaneously, as shown in Fig. 16 and Fig. 17, it is the total reflection lens of the eighth preferred embodiment of the present invention, the sectional groove 121 that is located at the outwardly expanding tapered hole 12 of the total reflection lens, and the sectional groove can be two symmetrical Round grooves to achieve various shapes that increase light scattering.

As shown in Fig. 18 and Fig. 19, it is the total reflection lens of the preferred embodiment 9 of the present invention, the sectional groove 121 which is arranged on the outward expansion taper hole 12 of the total reflection lens, and the sectional groove is four circles arranged at equal intervals. Grooves to achieve various shapes that increase light scattering.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. That is, as long as the equivalent changes and modifications made according to the claims of the present invention are covered by the patent scope of the present invention.

Claims (7)

1. A total reflection lens, which is a tapered light-transmitting body that is wide at the top and narrow at the bottom, and is provided with a through hole in its central axis, and the upper end of the through hole is connected with an externally expanded tapered hole, and it is characterized in that, A light source is provided at the hole, the surface forming the through hole is a light-incoming mirror surface, the surface forming the outer tapered hole is a light-emitting mirror surface, and the outer tapered surface of the total reflection lens is a total reflection surface. More than one sectional groove is arranged at the outwardly expanded taper hole, and the opening of the sectional groove is upward, and part of the light of the light source located at the through hole is projected from the modified sectional groove. 2 . The total reflection lens according to claim 1 , wherein the split groove is a frame-shaped split groove. 3 . 3. The total reflection lens according to claim 1, wherein the split groove is a U-shaped split groove. 4. The total reflection lens according to claim 1, wherein the cut groove is a circular groove. 5 . The total reflection lens according to claim 1 , wherein the split groove extends to the through hole. 6 . 6. The total reflection lens according to claim 1, characterized in that, the outwardly expanding tapered hole is a concave arc annular hole. 7. The total reflection lens according to claim 1, characterized in that, the outwardly expanding tapered hole is a convex arc ring hole. the

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