TW201522861A - High-efficiency LED lens condenser - Google Patents

Abstract

The invention relates to a light emitting diode (LED) condenser and, more particularly, to a lens device with high light condensing efficiency and excellent directivity. The structure is characterized in that: the condenser is composed of components, such as a composite lens, a reflection disc and a light source LED. The composite lens is integrally formed by a direct irradiation lens and an annular lens, and the main structure body of the lens is made of epoxy resin. The reflection disc made of metal aluminum is placed at the periphery of the composite lens. The LED in the center of the bottom of the composite lens is sealed with a base, or is partitioned and separated from the base. The partitioned base is hollowe semicircle shaped. In the application method, the LED is employed to generate a part of light beam for forming a vertical direct irradiation light beam directly from the direct irradiation lens or by passing through the hollowe partition to reach the direct irradiation lens. The other part of the light beam generates a horizontal annular irradiation light beam directly from the annular lens or by passing through the hollowe partition to reach the annular lens, which is then reflected by the reflection disc to form an annular light beam that is finally combined with the direct irradiation light beam to form a composite light beam in a coaxial direction. As a result, the present invention is provided with the following effects: (1) high light condensing efficiency; (2) excellent light beam directivity, and (3) small volume.

Description

High efficiency Led lens concentrator

The invention relates to a concentrator for a light-emitting diode, in particular to a lens assembly device which has a high-efficiency light collecting function in a small space.

According to the current most widely used lens type Led (light-emitting diode) on the market, there are two types, the first type is a cannonball type Led lens for concentrating, and the second type is a dome type Led lens for astigmatism. The performance and use of the two types of Led are now comparatively analyzed.

First, FIG. 1 is a structure and a light path diagram of a cannonball type Led lens. The lens is a simple light collecting device. The light source Led wafer 01 is embedded in the focus of the lens 07 (the object distance is slightly shorter than the focal length), so the lens Part of the light 001 emitted by 07 is a narrow angle beam, and the beam angle is generally set between 15 and 30 degrees. In addition, the other part is the light 003 reflected by the Led side body, and the light 002 which is totally reflected and then refracted. The directions of the two mixed light rays are scattered, and it is difficult to correct the uniform direction by the external object, so they are collectively called Leaking light, which is about 50% of the total amount of light, respectively.

Looking at Figure 2, the structure and optical path of a dome-shaped Led lens. The Dome lens is also a simple light diffusing device. 01 is embedded in the center of the lens 08. According to the optical principle, the Led light can be directly radiated from the center point of the dense medium to the outside of the medium. Theoretically, the light source 01 is projected from the lens 08 by a diffused light of a range of 180 degrees. This dome-shaped lens provides the highest efficiency of exiting light because of the low leakage of light.

From the above analysis, it can be seen that the projectile type Led lens can obtain a projection beam with a good concentrating effect, and the amount of light is lost by half. However, the dome-shaped Led lens has good light-emitting efficiency, but has no function of concentrating at all. Go one end. The present inventors have felt that the above-mentioned conventional Led lens is not capable of the best of both worlds, and strives to find a solution to integrate a Led lens device with high light extraction efficiency and good light collecting effect, after many research and trial results. The invention is finally completed.

Accordingly, it is a primary object of the present invention to provide a Led lens device having a high light collecting efficiency; a secondary object is to provide a small and lightweight Led lens device.

The main structural feature of the present invention is that the concentrator is composed of a composite lens, a reflective disk, and a light source Led. The composite lens is further integrated by a direct lens located at the upper portion and a ring lens at the lower portion, the direct lens being a single-sided convex lens with a curved surface upward, and the annular lens is a pair of half-cut and cut The downward facing annular lens, the structure of the lens is a transparent polymer, which may be epoxy resin (Epoxy Resin), Silicone Resin, PMMA or polycarbonate. a plastic material such as an ester (PC); the reflective disk is placed on the periphery of the composite lens, and the reflective surface of the disk is straight oblique or curved, and the opposite The shot layer is a metal film material of aluminum or silver; the Led is placed in the center of the base of the composite lens, and is integrally sealed with the base or separated from the base compartment, and the base of the compartment is a hollow semicircular shape, flat top Cylindrical or convex dome.

The method for applying the object to the device is as follows: the Led of the composite lens base has two types of arrangement, one is a composite lens and a low-power Led sealer, and a part of the light generated by the close-in Led is directly emitted from the direct lens to form a vertical direction. The direct beam, the other part of the light is generated by the annular lens to produce a horizontal annular beam, and then reflected by the reflection disk 90 degrees, turned into a ring beam, these two beams are combined into a composite beam; two is a composite lens and high power Led In the separator, the separation Led generates a part of the light, enters the direct lens through the hollow semicircular compartment, and forms a vertical direct beam, and the other part of the light also passes through the semicircular compartment, and enters the annular lens to generate a horizontal annular beam. After that, it is reflected by the reflection disk at 90 degrees to form a ring beam, and the two beams are finally combined into a composite beam.

The effect produced by the invention is as follows: 1. The light collecting efficiency is high: more than 90% of the Led light can be collected. Second, the beam pointing is good: the direct beam is coaxial with the ring beam in the same direction, and the brightness is concentrated and the light is low. Third, the small size: the annular beam first convergence and then reflect, which can greatly reduce the area of the reflector and reduce the overall space.

001‧‧‧Projected light

002,003‧‧‧Leaked light

004‧‧‧radiation light

005~007‧‧‧Color astigmatism

01‧‧‧Light source Led

011‧‧‧Power cord contacts

012‧‧‧Substrate

013‧‧‧ Heat sink

02,021,022,023‧‧‧reflecting surface

03,031,032,033‧‧‧Support base plate

04‧‧‧Led fixed point

07‧‧‧ Cannonball Led Lens

08‧‧‧Dome-type Led lens

10~14‧‧‧Semicircular hollow composite lens

20~24‧‧‧flat cylindrical hollow composite lens

30~34‧‧‧Compound lens with hollow cylindrical body

40~44‧‧‧ flat composite lens

50~53,60~63‧‧‧similar composite lens

Geometric pattern arrangement of 70~74‧‧‧ compound lens

713‧‧‧Nonlinear surface

74,75‧‧‧The horizontal axis and the tangent point of the two circles

A1, A2‧‧‧ reflection plate tilt angle

C71~C73‧‧‧ Center

H1, H2‧‧‧ horizontal axis

Light of L111~L161‧‧‧37.5 degree reflective surface

L11~L16, L21~L26‧‧‧The light of the lens composite beam of the present invention

L31~L36, L41~L46‧‧‧The light of the lens composite beam of the invention

Light of composite beam of L51~L56, L61~L66‧‧‧ lens

V1‧‧‧ longitudinal axis

W1, W2‧‧‧ vertical mapping width

N‧‧‧ normal

Figure 1 is a schematic diagram of the structure and optical path of a conventional cannonball type Led lens.

Figure 2 is a schematic view showing the structure and optical path of a conventional dome-shaped Led lens.

Figure 3 is a schematic view showing the external structure of each component of the present invention.

Figure 4 is a schematic diagram of the external structure of the sequence components of Figure 3 after being integrated.

Figure 5 shows the geometric deconstruction of the composite lens.

Figure 6 is a solid view of the base as a planar composite lens.

Figure 7 is a composite lens solid view of the base with a semicircular compartment.

Figure 8 is a solid lens solid view of the base with a flat-topped cylindrical compartment.

Figure 9 is a composite lens solid view of the base of the dome cylinder compartment.

Figure 10 shows the relationship between the ring beam and the slope of the reflector.

Figure 11 shows a composite lens device and a light path diagram in which the base is a semicircular compartment.

Figure 12 shows another composite lens device and optical path diagram with a semi-circular compartment.

Figure 13 shows a composite lens device and a light path diagram in which the base is a circular convex cylindrical chamber.

Figure 14 shows the composite lens device and the light path diagram of the flat-top cylindrical compartment.

Figure 15 shows a composite lens device and a light path diagram in which the base is flat.

Figure 16 is a light distribution curve of a direct beam and a ring beam.

Figure 17 is a light distribution curve of the composite beam.

Figure 18 is a wide-angle type compound lens device and a light path diagram similar to the present invention.

Fig. 19 is another high-concentrating type composite lens device and a light path diagram similar to the present invention.

Figure 20 is a comparison of the functions of the device of the present invention and a similar composite lens device.

The method, the structure and the effect that can be produced by the present invention for the above purposes are illustrated in the following embodiments of the drawings, which can be clearly seen: FIG. 3 is a schematic diagram of the external structure of the components of the present invention. . The uppermost layer is a direct lens 11 which is a semicircular convex with a curved surface upward. The lens is connected to the annular lens 12 at the bottom. The annular lens is a pair of semi-transverse and downwardly facing annular lenses. The two lenses are collectively referred to as a composite lens. The composite lens is composed of a transparent high molecular polymer, which may be a plastic material such as epoxy resin (Epoxy Resin), silicone resin (PM) or polycarbonate (PC). . The outermost reflective disk is shaped like a flat bottom plate with a hollow bottom. The disk is tilted outwardly, with a slope between 30 and 45 degrees, and is oriented in the same direction as the curved surface of the direct lens. The reflective disk cooperates with the direction of the circular beam, or The straight reflective surface or the curved inclined surface, the inner reflective layer 02 is mainly a metal coating of aluminum or silver, and the supporting bottom plate 03 is mostly made of a plastic polymer or metal having high toughness and plasticity. Led01 is placed in the center of the composite lens base, and is sealed with the base or separated from the base compartment (the corresponding relationship between the two types, which will be discussed one by one), the semicircle in the figure 01 is the mask of the Led wafer, 011 is the power line contact, 012 is the insulating substrate, and 013 is the heat sink (the low power LED does not need the heat sink).

Figure 4 is a schematic diagram of the external structure of the sequence components of Figure 3 after being integrated.

Figure 5 shows the geometric deconstruction of the composite lens. In the figure, a circle (including solid lines and broken lines) superimposed on the center of the upper side has a center C71, and two left and right sides are arranged in the same circle (including solid lines and broken lines), and the center of each circle is C72. With C73, the longitudinal axis V1 and the transverse axis H2 perpendicularly intersect each other perpendicularly to the upper circular center point C71, and the other parallel horizontal axis H1 passes through the lower two circular center points C72 and C73, and then perpendicularly intersects the longitudinal axis V1. Point 04, the uppermost edge of the lower two circles is again tangent to the horizontal axis H2 at points 74 and 75, and the curve (solid line) 72 or 73 About one quarter of the circumference of the circle. If the geometry of this figure is regarded as a half-section of the entity, all the oblique line portions 70 in the figure are composite lenses (including direct lens and ring lens), 71 is the curved surface of the direct lens, and 72 and 73 are ring lenses. Vertical to the surface. The upper and lower regions 713 of the periphery of the bottom of the direct lens 71 and the upper portion of the annular lens 73 (or 72) are non-linear curved surfaces corrected to eliminate the spherical aberration of the lens, which can eliminate the permeation light around the composite beam and make the beam more uniform. concentrated. The bottom center point 04 is the fixed point of the Led light source.

Figure 6 is a solid view of a compound lens with a flat base. One of Figure 6 is a top view solid figure, 41 is a direct lens, 42 is a ring lens, and 44 is a flat bottom. Figure 6 bis is a bottom view solid figure, 41 is a direct lens, and 42 is a ring lens. Fig. 6 is a half cross-sectional view, 40 is a cross section of the composite lens, 41 is a central curved surface of the direct lens, 42 is a vertical curved surface of the annular lens, and 44 is a flat bottom surface of the composite lens. This type of lens is designed for sealed Led.

Figure 7 is a composite lens solid view of the base with a semicircular compartment. One of Figure 7 is a top view solid figure, 11 is a direct lens, 12 is a ring lens, 13 is a hollow semicircular compartment at the bottom, and 14 is a flat bottom. Figure VII is a bottom view solid figure, 11 is a direct lens, and 12 is a ring lens. Figure VII is a half-section view, 10 is the cross-section of the composite lens, 11 is the central curved surface of the direct lens, 12 is the vertical curved surface of the annular lens, 13 is the hollow semi-circular compartment at the bottom, and 14 is the flat bottom surface of the composite lens. The hollow semi-circular compartment is designed to control the light direction of the Led, and is also used for heat dissipation (the larger the hollow compartment, the better the convection heat dissipation of the Led), the width of the compartment is slightly larger than the width of the direct lens, and the height is One-half the width.

Figure 8 is a solid lens solid view of the base with a flat-topped cylindrical compartment. One of the figures is a top view solid figure, 21 is a direct lens, 22 is a ring lens, 23 is a flat hollow cylindrical compartment at the bottom, and 24 is a flat bottom. Figure 8 bis is a bottom view solid figure, 21 is a direct lens, and 22 is a ring lens. Figure 8 is a half-section, 20 is the cross section of the composite lens, 21 is the curved surface of the central direct lens, 22 is the vertical curved surface of the annular lens, 23 is the hollow flat-top cylindrical compartment, and 24 is the flat bottom surface of the composite lens . The width of the compartment is approximately less than the width of the direct lens and the height is one-half of the width.

Figure 9 is a perspective view of a composite lens with a base that is a convex dome cylinder compartment. One of the figures is a top view solid figure, 31 is a direct lens, 32 is a ring lens, 33 is a hollow dome cylinder compartment, and 34 is a flat bottom. Figure IX is a bottom view solid figure, 31 is a direct lens, and 32 is a ring lens. Figure 9 is a half-section, 30 is the cross section of the composite lens, 31 is the curved surface of the central direct lens, 32 is the vertical curved surface of the annular lens, 33 is the hollow convex dome cylinder compartment, 34 is the flat bottom of the composite lens surface. The width of the compartment is approximately less than the width of the direct lens and the height is one-half of the width.

Figure 10 shows the relationship between the ring beam and the slope of the reflector. Figure 10 and Figure 12 are the same lens, the same Led and the same reflector, but the inclination of the two reflection plates is different. One of the figures is a straight bevel reflector with a reflective surface of 02 and a reflective disk. The vertical mapping width of the side is W1, and the oblique angle A1 is set to 45 degrees (the normal n is 0 degree). If the angle of the annular beam is 15 degrees, the light L13 reflected by the reflecting disk is 0 degree, L11 to The beam angle between L13 is also 15 degrees. Take it again Figure 10 bis compares, the reflection disk of Figure 12 is also a straight oblique reflection surface 021, the vertical reflection width of the oblique side of the reflection disk is W2, and the oblique angle A2 is set to 37.5 degrees (the normal n is 0 degrees) Assuming that the opening angle of the annular beam is 15 degrees, the light beam L111 reflected by the reflecting disk is 0 degrees, and the beam angle between L111 and L131 is also 15 degrees. Comparing the two figures, it is known that the 02 (one of the tenth) with a large slope of the reflecting disk has a shadow width W1 larger than the shadow width W2 of the small 021 (Fig. 12), so the overall space of the figure XX is smaller than Figure one of the ten. The tilt angle of the reflecting disk can be rotated by one-half of the angle of the annular beam, that is, 7.5 degrees of one-half of 15 degrees, which is equivalent to the angle of 45 degrees of A1 to the angle of 37.5 degrees of A2.

Figure 11 shows a composite lens device and a light path diagram in which the base is a semicircular compartment. The bottom of the composite lens 10 is a hollow semi-circular compartment 13 . The composite lens 10 includes a direct lens 11 and a ring lens 12 . The straight slope reflector is inclined at 45 degrees, 02 is the reflection surface of the disk, and 03 is the support of the reflector disk. The bottom plate, because the light source Led01 is placed at the center point of the hollow semicircular body 13, according to the optical principle, the light emitted from the center of the circle can be radiated into the dense medium composite lens 10 by the air of the medium without deflection, and the direct lens 11 directly above Half of the Led light is directly refracted at a beam angle of 30 degrees (±15 degrees) to form a direct beam. The other half of the light is emitted by the bottom annular lens 12 at a 15 degree beam angle to form an outwardly directed annular beam. The annular beam is then reflected at a 90-degree angle by a straight-slope reflector, and finally combined with the direct beam to form a coaxial composite beam. Light rays L12 to L15 are direct beams, while rays L13 to L11 and L14 to L16 are reflected. Ring beam. The angle of the direct beam angle and the annular beam angle is set by the epoxy lens with a refractive index of 1.3 and the object distance set by Led. It is a rough data. When the conditions are different, the beam angle will also be Follow the change.

The one shown in Fig. 12 is also a composite lens device and a light path diagram in which the base is a semicircular compartment. The difference from FIG. 11 is that the oblique angle of the straight inclined reflecting plate of the figure is 37.5 degrees, 021 is the reflecting surface of the disk, 031 is the supporting bottom plate of the reflecting plate, and the other the same as the bottom of the composite lens 10 is a hollow semicircular compartment. 13. The composite lens 10 includes a direct lens 11 and a ring lens 12, and the light source Led01 is placed at a center point of the hollow semicircle 13. When the light of the light source Led01 enters the direct lens 11 directly above, about half of the Led light is 30 degrees. The beam angle of (±15 degrees) is directly refracted to form a direct beam, and the other half of the light is emitted by the annular lens 12 at the bottom at a beam angle of 15 degrees to form an outward beam. The annular beam is then reflected by a linear reflecting plate at a 90-degree angle into a circular beam, and finally combined with the direct beam to form a coaxial composite beam. Light rays L12 to L15 are direct beams, and rays L111 to L131 and L141 to L161 are reflected ring beams. Compared with the previous figure XI, although the slope of the reflection plate of this figure becomes smaller (from 45 degrees to 37.5 degrees), the composite beam angle of the shot is still exactly the same as that of Fig. 11, so that the front figure can be verified. The smaller the slope of the reflector as described in the ten, the smaller the overall space will be.

The figure shown in Fig. 13 is a composite lens device and a light path diagram of a cylindrical dome-shaped compartment. In the figure, the oblique angle of the curved bevel disk is about 37.5 degrees (the tangent of the midpoint of the curved bevel), 022 is the reflecting surface of the disk, 032 is the bottom plate of the reflecting plate, and the bottom of the composite lens 30 is a hollow circular convex cylindrical body. Between 33, the composite lens 30 includes a direct penetration 镱31 and the annular lens 32, and the light source Led01 is placed at the center point of the hollow cylinder 33. When the light of the light source Led01 enters the direct lens 31 directly above, about half of the Led light is directly refracted at a beam angle of about 30 degrees. A direct beam is formed. The remaining half of the light is emitted by the bottom annular lens 32 in near parallel light to form an annular beam. The annular beam is then reflected by a curved bevel disk at a 90-degree angle, and finally merges with the direct beam to form a coaxial composite beam. Light rays L31 to L36 are direct beams, and rays L33 to L35 and L32 to L34 are reflected ring beams. Compared with Figure 12, although the composite beam angles emitted by the two are 30 degrees, the angle of the annular beam of the figure is close to 0 degree due to the different shape of the hollow compartment guiding the light. It can be more convergent, and the reflective disk used is naturally smaller, resulting in a smaller overall space than the twelve.

Figure 14 shows a composite lens unit and a light path diagram in which the base is a flat-topped cylindrical compartment. In the figure, the oblique angle of the straight inclined reflecting plate is 45 degrees, 02 is the reflecting surface of the disk, 03 is the bottom plate of the reflecting plate, the bottom of the composite lens 20 is a hollow flat top cylindrical compartment 23, and the composite lens 20 includes a direct lens. 21 and the annular lens 22, and the light source Led01 is placed at the center point of the hollow cylinder 23. When the light of the light source Led01 enters the direct lens 21 directly above, about half of the Led light is directly emitted by the nearly parallel beam to form a direct beam. The other half of the light is emitted by the annular lens 22 at the bottom and also by a nearly parallel annular beam. The annular beam is reflected by a straight bevel reflector at a 90-degree angle into a ring beam, and finally merges with the direct beam in the same direction. Composite beam. Light rays L23 to L24 are direct beams, and rays L21 to L22 and L25 to L26 are reflected ring beams. This picture shows It is characterized in that the lens arrangement can form a highly concentrated and nearly parallel beam of light.

Figure 15 shows a composite lens device and a light path diagram in which the base is flat. The figure shows a straight inclined reflecting plate, the inclined angle of the disk is 45 degrees, 02 is the reflecting surface of the disk, 03 is the bottom plate of the reflecting plate, the bottom of the composite lens 40 is a closed flat bottom type 44, and the composite lens 40 includes a direct penetration.镱41 and the annular lens 42, and the light source Led01 is embedded at the center point of the flat bottom surface 44. When the light of the light source Led01 enters the direct lens 41 directly above, about half of the Led light is directly refracted at a beam angle of about 30 degrees, forming Direct beam. The remaining half of the light is emitted from the bottom annular lens 42 at an angle of about 15 degrees to form an annular beam. The annular beam is then reflected by a straight bevel reflector at a 90-degree angle, and finally combined with the direct beam to form a coaxial composite beam. Light rays L42 to L45 are direct beams, and rays L41 to L43 and L44 to L46 are reflected ring beams. Take this picture and Figure 11 for comparison. The difference is that the Led of this figure is sealed, and the outgoing light to the lens is only one-time refraction, while the Led of Figure 11 is separated by a hollow semi-circular compartment, Led. The light must be twice refracted to emit the lens. The light paths of the two are slightly different, but the resulting composite beam is the same. This means that the lens device of the present invention can be sealed with the low-power Led to form a simple combination. It can also be separated from the high-power Led compartment, and the purpose of compartment separation is to form convective heat dissipation of the Led.

Figure 16 is a light distribution curve of a direct beam and a ring beam. The half-value angle of the direct beam in the center of the figure is 30 degrees (±15 degrees), the relative brightness is about 50%, and the half-value angles of the ring beams on both sides are each 15 degrees, and the relative brightness is also about 50%, direct The optical axis of the beam is perpendicular to the optical axis of the annular beam.

Figure 17 is a light distribution curve of the composite beam. The figure shows a composite beam composed of a direct beam and a 90-degree reflected ring beam. The half-value angle of the beam is 30 degrees, and the relative brightness is 90%, although the relative brightness of the composite beam is theoretical. It should reach 100%, but in fact, during the reflection of the ring beam through the reflective disk, the light will be lost, and the amount of loss is related to the material of the metal reflective layer and the wavelength of the reflected light.

Two reference designs of a composite lens similar to the apparatus of the present invention are provided below for comparison. Fig. 18 is a wide-angle type compound lens device and a light path diagram similar to the present invention. The illustrated lens 51 and the straight beveled reflecting plate 52 are integrated composite lenses 50. The bottom of the lens has a hollow flat-topped cylindrical compartment 53. The light is emitted from the bottom center light source Led01, and the uppermost central direct lens 51 is refracted. More than half of the light, due to the short object distance of the light source 01, produces a wide beam angle. In addition, less than half of the light is left from the side of the hollow cylinder into the straight bevel reflector 52, and the total reflection through the disk surface refracts the light outside the lens and combines with the direct beam to form a composite beam. Among them, L52 to L55 are direct beams, and L51 to L53 and L54 to L56 are ring beams. It is known from the structure of the lens and the path of the light that the lens is mainly applied to wide-angle illumination. Except for the central direct beam, the difference from the present invention is mainly that the annular beam of the lens does not converge through the annular lens. As a result, the shape of the reflecting disk is too large, and the refractive parameters of the annular beam and the direct beam of the lens are different, and the traveling direction of the merged beam is difficult to agree, and a large deviation is generated for the long-distance projection.

Fig. 19 is another high-concentrating type composite lens device and a light path diagram similar to the present invention. 61 is a plane side of a single-sided convex lens, which is a composite lens 60 which is integrated with the curved bevel reflecting plate 62. The bottom of the lens has a hollow circular concave top cylindrical compartment 63 (the hollow circular concave top is also a single convex lens). The rim is emitted by the light source Led01 at the center of the bottom, and the uppermost direct lens 61 refracts about half of the light to form a direct beam. The other half of the light enters the lens from the side of the hollow cylinder 63, and is totally reflected by the curved bevel reflector 62 out of the lens, and merges with the direct beam to form a uniform composite beam. Among them, L61 to L66 are direct beams, and L63 to L65 and L62 to L64 are ring beams. According to the lens structure and the path of the light in the figure, when the Led light enters the lens from the side of the cylindrical compartment, since there is no convergence of the lens, a large angle of the beam angle is generated, so a large-area reflection disk is required. Reflecting the light completely, the large reflecting plate causes a large volume of the composite lens, which is a disadvantage, but the light collecting efficiency of the lens and the simple structure are the main advantages.

Figure 20 is a comparison of the functions of the device of the present invention and the similar composite lens device of Figure 19. The difference in structure and function between the two lenses is now compared one by one. The one shown in Fig. 21 is the composite lens of Fig. 19. The Led of the lens is placed below the hollow compartment and can only be completely with the lens body. Separate, and Figure 20 bis is the lens device of the present invention, the Led can be sealed at the bottom of the lens, and the Led of Figure 20 ter can pass through the hollow compartment, and can also be completely separated from the lens, although the two devices of the present invention The structure of the lens portion is different, but it can project the same composite beam. Referring again to the Led light of one of FIG. 20, the entrant is a thicker lens. When the refractive angle is changed in the secondary refraction, the dispersion 005 produced by the thick glass is naturally larger than that of the thin glass, and the lens device of the present invention, As shown in Fig. 20 bis, there is only one refraction, and there is almost no dispersion 006, while the lens in Fig. 20 is thinner, and the dispersion 007 generated after the second refraction is less obvious. Further, in the lens of one of the twenty-fifth, the reflecting plate of the lens and the overall volume are large (described in Fig. 19). The lens device of the present invention has a relatively small reflective disk and an overall volume thereof. After comparing the above three figures, it can be seen that the Led lens concentrator of the present invention has the following advantages over the similar lens device: First, the light source Led can be embedded in the lens or separated from the lens, which is necessary for heat dissipation or not Led that requires heat dissipation can be used differently. Second, there is no obvious dispersion phenomenon, which is necessary for some electronic images that require a pure white backlight. Third, the smaller size, for the layout of the complex Led can reduce more space.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the patent scope and the description of the invention according to the present invention are All remain within the scope of the invention patent.

Figure 1 is a schematic diagram of the structure and optical path of a conventional cannonball type Led lens.

Figure 2 is a schematic diagram showing the structure and optical path of a conventional cannonball type Led lens.

Figure 3 is a schematic view showing the external structure of each component of the present invention.

Figure 4 is a schematic diagram of the external structure of the sequence components of Figure 3 after being integrated.

Figure 5 is the geometrical composition of the composite lens.

Figure 6 is a solid view of the base with a flat-bottomed compound lens.

Figure 7 is a composite lens solid view of the base with a semicircular compartment.

Figure 8 is a solid lens solid view of the base with a flat-topped cylindrical compartment.

Figure 9 is a composite lens solid view of the base of the dome cylinder compartment.

Figure 10 shows the relationship between the ring beam and the slope of the reflector.

Figure 11 shows a composite lens device and a light path diagram in which the base is a semicircular compartment.

Figure 12 shows another composite lens device and optical path diagram with a semi-circular compartment.

Figure 13 shows a composite lens device and a light path diagram in which the base is a circular convex cylindrical chamber.

Figure 14 shows a composite lens unit and a light path diagram in which the base is a flat-topped cylindrical compartment.

Figure 15 shows a composite lens device with a flat bottom and a light path diagram.

Figure 16 is a light distribution curve of a direct beam and a ring beam.

Figure 17 is a light distribution curve of the composite beam.

Figure 18 is a composite lens device and optical path diagram similar to the present invention.

Figure 19 is another composite lens device and ray path diagram similar to the present invention.

Figure 20 is a comparison of the function of the device of the present invention with a similar lens device of Figure 19.

Claims (9)

A high-efficiency Led lens concentrator comprising a composite lens, a reflective disk and a component such as Led: the composite lens is integrated by a direct lens and a ring lens, and the direct lens located at the upper portion is a curved surface upward A unilateral convex lens, the annular lens at the lower part is a pair of semi-transversely curved lenses with a tangential face facing downward, and the outwardly facing circular arc surface is about a quarter of the circumference of the circle, the main lens The structure is a transparent epoxy resin (Epoxy Resin) polymer; the periphery of the bottom of the composite lens is a circular reflecting plate, the reflecting surface of the disk is inclined outward in a straight oblique shape, and the disk mouth is connected with a direct lens. The curved surface faces in the same direction, and the reflective layer is made of an aluminum metal film; the Led is placed in the center of the composite lens base, and the base is a hollow semicircular compartment. The high-efficiency Led lens concentrator according to claim 1, wherein the main structure of the lens is a transparent silicone resin (Silicone Resin) polymer. The high efficiency LED lens concentrator according to claim 1, wherein the main structure of the lens is a transparent acryl (PMMA) polymer. The high efficiency LED lens concentrator according to claim 1, wherein the main structure of the lens is a transparent polycarbonate (PC) polymer. The high-efficiency Led lens concentrator according to claim 1, wherein the reflecting surface of the reflecting plate is inclined outward in a curved shape. The high efficiency LED lens concentrator according to claim 1, wherein the reflective layer of the reflective disk is a silver metal film. According to the high-efficiency Led lens concentrator described in claim 1, wherein the composite The lens base is a hollow flat top cylindrical compartment. The high efficiency LED lens concentrator according to claim 1, wherein the composite lens base is a hollow dome-shaped cylindrical compartment. The high efficiency LED lens concentrator according to claim 1, wherein the composite lens base is a planar body in which Led is sealed.