TWI474050B - LED optical lens with complex media - Google Patents

Description

LED optical lens with multiple media

The present invention relates to the technical field of optical lenses, and more particularly to an LED optical lens with multiple dielectrics that utilizes the principle of refraction or reflection of three opticals to change the illumination angle of the original light-emitting diodes, so as to increase the illumination range and apply to various types. Different needs of lamps.

Light Emitting Diodes (LEDs) are widely used in various backlights or bulb tubes due to their low power consumption, high efficiency and long life. However, the illumination angle of the LED is generally only about 120°, so that the illumination range is limited, and the illumination light of the LED is generally concentrated at the center, so that the brightness difference between the center and the periphery is very large, and the uniform illumination cannot be provided. effect. In this way, various LED illumination devices using LEDs as light sources will have a smaller illumination range and poor light uniformity due to the original illumination angle and original light distribution of the LED light source, and it is difficult to meet user requirements. In view of this, the LED illuminating device is often provided with an optical lens to adjust the light emitted by the LED light source by using the secondary optical principle of the optical lens, so as to improve the uniformity of the projection illuminance, the illuminating angle and the illuminating light of the original LED light source. Produce a variety of suitable light shape layouts, and provide the best lighting conditions under a variety of different conditions of use.

Moreover, due to the trend of miniaturization of the device, or in order to meet the market demand of high uniform light, high illumination and high illumination range, a single LED lighting device may be equipped with multiple LEDs, and each LED is equipped with an optical lens, so In conjunction with the optical lens, the structural design and appearance volume are limited. Affecting the secondary optical effects that optical lenses can produce, causing LED lighting devices to provide optimal illumination. In this regard, how to further enhance the optical path adjustment function of the optical lens by utilizing the principle of refraction and reflection of the three optics is a subject that the practitioners in the field are eager to improve.

In view of the problems of the prior art, it is an object of the present invention to provide an LED optical lens with a plurality of optical principles using a three-dimensional optical principle to increase the illumination angle of the original LED, thereby further applicating the LED.

According to the purpose of the present invention, the LED optical lens with a plurality of dielectrics is assembled for assembly with an LED light source comprising an optically dense medium body and at least one light-smoothing medium. The optically dense medium body has a refractive index n ₁ , and has a first body and a second body, the first body has an open type of at least one first hole; and the second body has an open type of at least one second a hole, and the number of the second hole is equal to the number of the first hole, and the first body and the second body are coupled to each other to form the optically dense medium body, and the first hole position corresponds to the second hole The position forms a closed at least one accommodation chamber. Moreover, the light-draining medium is filled in the accommodating chamber, and has a refractive index of n ₂ and satisfies a relationship of n ₁ >n ₂ .

In order to improve the optical path of the LED light source by using the principle of three-dimensional optical refraction or reflection, the light-diffusing medium is filled in the accommodating chamber to form a reflecting means for the light emitted by the LED light source to pass through the reflecting means. Optical reflection. Alternatively, the light-diffusing medium is filled in the accommodating chamber to form a refraction means for optically refracting the light emitted by the LED light source through the refracting means.

Wherein the side surfaces of the first body and the second body are provided with a side light uniform means for the light emitted by the LED light source to pass through the side After the partial light uniform means, a uniform light irradiation distribution is applied to the one-side target irradiation area. The top surface of the first body and the second body is provided with a top light uniform means for distributing the light emitted by the LED light source through the top light uniform means and uniformly distributing the light to a top target illumination area. And the first body is provided with a first insertion hole and a first connector, the second body is provided with a second insertion hole and a second connector; and the first connector The hole system is disposed corresponding to the second connector member, and the first connector member is disposed corresponding to the second insertion hole; and the optically dense medium is a plastic, and the light-draining medium is air.

Furthermore, in order to achieve the above object, an LED optical lens with a plurality of dielectrics of the present invention is provided for assembly in an LED light source, characterized in that the LED optical lens with a plurality of dielectrics has an optically dense medium body, the optically dense medium The refractive index of the body is n ₁ , and the optically dense medium is integrally formed; the optically dense medium body is provided with at least one light-dissipating medium, and the refractive index of the light-diffusing medium is n ₂ and satisfies n ₁ >n ₂ relationship.

Or, in order to achieve the above object, the LED optical lens with a plurality of dielectrics of the present invention is assembled to an LED light source, wherein the LED optical lens with a plurality of dielectrics is bonded by at least three optically dense medium bodies. Forming and forming a closed at least one accommodating chamber, the accommodating chamber is configured to fill at least one light absorbing medium, and the refractive index of each of the optically dense medium bodies is n ₁ , and the refractive index of the light absorbing medium Is n ₂ and satisfies the relationship of n ₁ >n ₂ . Each of the optically-tight medium bodies has a mating hole and a mating member. When the mating medium bodies are joined to each other, the mating member of one of the optically-tight medium bodies is fitted to an adjacent side. The insertion hole of the optically dense medium body and the insertion hole of one of the optically dense medium bodies are fitted by the insertion member of the optically dense medium body on the other adjacent side.

Or, the LED optical lens of the present invention is assembled to an LED light source, comprising an optically dense medium body having a refractive index n ₁ , comprising at least two bodies and at least one light-draining medium. Each of the bodies has an open type of at least one hole, and the number of the holes of the body is equal, and the system can be combined with each other to form the optically dense medium body, and the body is The holes are corresponding to each other to form a closed at least one accommodation chamber. The light-draining medium is filled in the accommodating chamber, and has a refractive index of n ₂ and satisfies the relationship of n ₁ >n ₂ . Wherein the at least one light-dissipating medium is disposed in a funnel shape, and the tip end thereof extends toward the bottom of the LED optical lens.

Alternatively, the LED optical lens of the present invention having a plurality of dielectrics is provided for assembly in an LED light source comprising an optically dense medium body and at least one light-smoothing medium. a light-tight medium body having a refractive index n ₁ and forming a closed at least one accommodating chamber therein, wherein the accommodating chamber has a semi-elliptical space structure having an arc edge and a plane, the arc edge connecting the Plane and facing the top of the LED optical lens. The light-draining medium is filled in the at least one accommodating chamber, and has a refractive index of n ₂ and satisfies a relationship of n ₁ >n ₂ .

In summary, the LED optical lens with a plurality of media uses the offset angle generated by the transmission of light between different media to adjust and change the original light path direction of the LED light source, so as to improve the uniformity of the illumination light, and When the offset angle reaches the maximum value and the total reflection is formed, the original illumination angle of the LED light source can be increased to expand the illumination range.

In order for your review board to have a clear understanding of the contents of the present invention, please refer to the following description for matching drawings.

Please refer to FIGS. 1 to 4, which are exploded views, perspective views, cross-sectional views and light trace diagrams of an embodiment of the first preferred embodiment of the present invention. As shown in the figure, the LED optical lens 1 with a plurality of media is assembled to be assembled into an LED light source (not shown), which comprises an optically dense medium body 10 and three light-diffusing media 11, and the optical-dense medium body 10 may be arranged in a cylindrical shape made of a plastic material, and the light-diffusing medium 11 may be air. Thus, the refractive index n ₁ of the optical-density medium body 10 is greater than the refractive index n _{2 of} the light-diffusing medium 11 . The LED optical lens 1 can be formed in a non-integral manner, that is, the optically dense medium body 10 has a first body 100 and a second body 101. The first body 100 is provided with three open first holes 1000, a first The insertion hole 1001 and a first connector 1002 are provided, and the second body 101 is provided with the same number of three open second holes 1010, a second insertion hole 1011 and a first number as the first holes 1000. The second engaging hole 1011 is disposed corresponding to the first engaging member 1002, and the second engaging member 1012 is disposed corresponding to the first engaging hole 1001. The second insertion hole 1011 is fitted through the first connector 1002, and the first insertion hole 1001 is fitted into the first insertion hole 1001 to match the first body 100 and the second body 101. The light-tight medium body 10 is connected to each other, and the positions of the first holes 1000 are corresponding to the positions of the second holes 1010 to form three closed accommodation chambers for accommodating the light-dissipating medium 11.

Moreover, the top surface of the first body 100 and the second body 101 may be provided with a top light uniform means, for example, a plurality of planes 12 connected to each other at the periphery of the top surface for transmitting the light emitted by the LED light source The top light uniform means then has a uniform light illumination distribution for a top target illumination area. Side table of the first body 100 and the second body 101 The surface is provided with a side light uniform means for transmitting the light emitted by the LED light source through the side light uniform means through the plurality of convex leaves 13 of the scale, and uniformly distributing the light to the side target irradiation area. . It is to be noted that the lobes 13 are planar and are connected to each other to surround the side surfaces of the first body 100 and the second body 101 to form a layer of leaf rings. In the cross-sectional view of FIG. 3, The first body 100 and the side edges of the second body 101 are in a zigzag shape.

In this embodiment, the accommodating chambers have a funnel-shaped space structure, and the tip ends thereof face the bottom of the LED optical lens 1 , and the distance of the accommodating chambers from the bottom of the LED optical lens 1 is farther. The larger the funnel-shaped space structure. Filling the light-dissipating medium 11 in the accommodating chamber to form a reflecting means for optically reflecting the light emitted by the LED light source through the reflecting means, in other words, when the light of the LED light source is intended to penetrate the nearest When the first accommodating chamber at the bottom of the LED optical lens 1 is used, since the refractive index of the optically dense medium body 10 and the optical plasmon medium 11 satisfies the relationship of n ₁ >n ₂ , the LED light source is based on the principle of total reflection. Part of the emitted light will be totally reflected on the lower surface of the first accommodating chamber. In addition, another portion of the light is refracted through the first accommodating chamber and continues to be transmitted toward the top of the LED optical lens 1 to be further reflected on the lower surface of the second accommodating chamber or the third accommodating chamber. The light-dissipating medium 11 stacked thereon can effectively increase the illumination angle and the illumination range.

Please refer to FIGS. 5 and 6 again, which are cross-sectional views and light trace diagrams of another embodiment of the first preferred embodiment of the present invention. As shown in the figure, in order to fill the accommodating chamber 11 to form a refraction means, the light emitted by the LED light source is optically refracted by the refracting means, and the accommodating chambers are respectively Semi-elliptical spatial structure with arc The sides are all disposed toward the top of the LED optical lens 1, and the further the distance of the accommodating chambers from the bottom of the LED optical lens 1, the larger the semi-elliptical space structure is to further refract the light emitted by the LED light source to enhance Uniform luminosity.

Please refer to FIGS. 7 and 8 , which are respectively a perspective view and a cross-sectional view of a second preferred embodiment of the present invention. As shown in the figure, the LED optical lens 2 with a plurality of media is assembled to an LED light source (not shown) to improve the original illumination angle and illumination range of the LED light source through the principle of three-dimensional optical reflection. The LED optical lens 2 has a light-tight medium body 20 and a light-diffusing medium 21, which can be integrally formed from a plastic material to form a cup structure having an upper width and a lower width, and has a refractive index of n ₁ . The light-draining medium 21 can be disposed in a funnel shape and disposed in the optical-tight medium body 20. Moreover, the light-draining medium 21 can be air, so the refractive index n ₂ is smaller than the refractive index n _{1 of the} dense medium body 20. Thus, when the optical path of the LED light source is offset by a certain angle, it is totally reflected on the light-dissipating medium 21, so that the LED light source has a wider illumination range.

Please refer to FIGS. 9 and 10, which are respectively a perspective view and a cross-sectional view of a third preferred embodiment of the present invention. As shown in the figure, the LED optical lens 3 with a plurality of media is assembled to an LED light source (not shown), and the LED optical lens 3 is a plastic cup formed by joining three optically dense medium bodies 30. And forming a closed one-piece accommodation room inside. The accommodating chamber may have a semi-elliptical space structure for filling a transparent one-way light-dissipating medium 31, and the refractive index medium body 30 has a refractive index n ₁ and the light-diffusing medium 31 has a refractive index n ₂ . Let the relationship of n ₁ >n ₂ be satisfied. In this way, part of the light emitted by the LED light source that is incident perpendicularly into the accommodating chamber will be refracted by the light-dissipating medium 31 to enhance the divergence to enhance the illumination range.

The above description is only illustrative of preferred embodiments and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

First preferred embodiment

1‧‧‧LED optical lens

10‧‧‧Optical medium body

100‧‧‧ first ontology

1000‧‧‧ first hole

1001‧‧‧First insertion hole

1002‧‧‧First connector

101‧‧‧Second ontology

1010‧‧‧ second hole

1011‧‧‧Second insert hole

1012‧‧‧Second fittings

11‧‧‧Lighting medium

12‧‧‧ plane

13‧‧‧ lobes

Second preferred embodiment

2‧‧‧LED optical lens

20‧‧‧Optical medium body

21‧‧‧Lighting medium

Third preferred embodiment

3‧‧‧LED optical lens

30‧‧‧Optical medium body

31‧‧‧Lighting medium

Figure 1 is an exploded view of an embodiment of the first preferred embodiment of the present invention.

Figure 2 is a perspective view showing an embodiment of the first preferred embodiment of the present invention.

Figure 3 is a cross-sectional view showing an embodiment of the first preferred embodiment of the present invention.

Figure 4 is a light trace diagram of an embodiment of the first preferred embodiment of the present invention.

Figure 5 is a cross-sectional view showing another embodiment of the first preferred embodiment of the present invention.

Figure 6 is a light trace diagram of another embodiment of the first preferred embodiment of the present invention.

Figure 7 is a perspective view of a second preferred embodiment of the present invention.

Figure 8 is a schematic cross-sectional view showing a second preferred embodiment of the present invention.

Figure 9 is a perspective view of a third preferred embodiment of the present invention.

Figure 10 is a cross-sectional view showing a third preferred embodiment of the present invention.

1. . . LED optical lens

10. . . Optically dense medium body

100. . . First ontology

1000. . . First hole

1001. . . First insertion hole

1002. . . First connector

101. . . Second ontology

1010. . . Second hole

1011. . . Second insertion hole

1012. . . Second connector

11. . . Light-dissolving medium

12. . . flat

13. . . Lobe

Claims (10)

An LED optical lens with a plurality of media is assembled for an LED light source, comprising: a light-tight medium body having a refractive index n ₁ , comprising: a first body having at least one first cavity in an open type a first insertion hole and a first connector; and a second body having an open at least one second hole, a second insertion hole and a second connector, the second insertion The hole system is disposed corresponding to the first connector member, the second connector member is disposed corresponding to the first insertion hole, and the number of the second hole is equal to the number of the first hole, and is embedded by the first connector The second insertion hole is engaged with the first insertion hole, and the first insertion body is coupled to the second body to form the optically dense medium body, and the first The hole position is a closed cavity of at least one accommodating chamber corresponding to the position of the second hole; and at least one light absorbing medium is filled in the accommodating chamber, and has a refractive index of n ₂ and satisfies n ₁ >n ₂ The relationship. The LED optical lens with a plurality of media according to claim 1, wherein the light-diffusing medium is filled in the accommodating chamber to form a reflecting means for the light emitted by the LED light source to pass through the reflecting means. For optical reflection. The LED optical lens with a plurality of media as described in claim 1, wherein the light-diffusing medium is filled in the accommodating chamber to form a refraction means for the light emitted by the LED light source to pass through the refracting means For optical refraction. The LED optical lens with a plurality of media according to the second or third aspect of the invention, wherein the side surfaces of the first body and the second body are provided with a side light uniform means for emitting the LED light source. The light passes through the side light uniform means and is uniformly distributed to the side target illumination area. The LED optical lens with a plurality of media according to the fourth aspect of the invention, wherein the top surface of the first body and the second body are provided with a top light uniform means for transmitting the light emitted by the LED light source. The top light uniform means then has a uniform light illumination distribution for a top target illumination area. The LED optical lens with a plurality of media as described in claim 1, wherein the optically dense medium is a plastic, and the light-diffusing medium is air. An LED optical lens with a plurality of dielectrics is assembled for an LED light source, wherein the LED optical lens with a plurality of dielectrics has an optically dense medium body having a refractive index n ₁ . The optically dense medium is integrally formed; the optically dense medium body is provided with at least one light-dissipating medium, and the at least one light-dissipating medium is disposed in a funnel shape, and the tip end thereof extends toward the bottom of the LED optical lens, the light The refraction medium has a refractive index of n ₂ and satisfies the relationship of n ₁ > n ₂ . An LED optical lens with a plurality of media is assembled for an LED light source, wherein the LED optical lens with a plurality of media is formed by joining at least three optically dense media bodies and forming a closed type inside. At least one accommodating chamber, wherein the accommodating chamber is filled with at least one light absorbing medium, and the refractive index of each of the optically dense medium bodies is n ₁ , and the refractive index medium has a refractive index of n ₂ and satisfies n ₁ > a relationship of n ₂ , wherein each of the optically-tight medium bodies has an insertion hole and a connector, and when the optical-density medium bodies are joined to each other, one of the optical-density medium bodies The insertion member is fitted to the insertion hole of the optically dense medium body on an adjacent side, and the insertion hole of one of the optically dense medium bodies is received by the optically dense medium body of another adjacent side The fitting is fitted. An LED optical lens with a plurality of dielectrics is assembled for an LED light source, comprising: an optically dense medium body having a refractive index n ₁ , comprising: at least two bodies each having at least one opening of an open type, The plurality of holes of the body are equal in number, and the systems are combined with each other to form the optically dense medium body, and the holes of the bodies are corresponding to each other to form at least one closed type. The accommodating chamber; and at least one light-storing medium is filled in the accommodating chamber, and has a refractive index of n ₂ and satisfies a relationship of n ₁ >n ₂ , wherein the at least one light-dissolving medium is disposed in a funnel shape. Its tip end extends toward the bottom of the LED optical lens. An LED optical lens having a plurality of dielectrics for assembling an LED light source, comprising: a light-tight medium body having a refractive index n ₁ and forming a closed at least one housing chamber therein, wherein the capacitor The chamber has a semi-elliptical space structure having an arc edge and a plane, the arc edge connecting the plane and disposed toward the top of the LED optical lens; and at least one light-draining medium is filled in the at least one housing chamber. And its refractive index is n ₂ and satisfies the relationship of n ₁ >n ₂ .