JP3173214U - Lens structure - Google Patents

Abstract

Provided is a lens structure that has a concentrated and uniform illumination light pattern, increases the number of manufacturing types, and facilitates manufacturing, thereby improving usability.
The lens structure includes a reflecting portion, a projecting portion, and a position restricting portion, and a concave groove having a side wall serving as a first step refracting surface that is gradually narrowed down to the center of the bottom surface of the reflecting portion. Provided, the side wall of the reflection part is divided into a first reflection segment 12, a second reflection segment 13, a third reflection segment 14, and a fourth reflection segment 15 from the bottom to the top, and the projection part is a reflection part. The projection surface 21 is provided on the upper surface of the fourth reflection segment, and the position restricting portion joins the side walls of the reflection portion and the projection portion.
[Selection] Figure 1

Description

  The present invention relates to a lens structure, and more particularly, to a lens structure used in combination with a light emitting diode (LED) attached to an illumination lamp.

  Light emitting diodes are widely used in lighting lamps instead of conventional light bulbs because they have advantages such as light weight, low energy consumption, long service life, and resistance to breakage. In general, an illumination lamp is provided with a small number of light emitting diodes and combined with a convex lens. The illumination effect is improved by condensing and projecting with a limited light source.

  However, the conventional convex lens has a convex lens surface on its outer surface and a flat surface facing the light-emitting diode. After the light is transmitted through the flat surface and the convex lens surface sequentially, circular illumination light is formed on the surface of the irradiated object. The light is collected at the center, but a weak optical ring is formed at the outer edge, so that the light cannot be concentrated in a predetermined range, the light collecting effect is limited, and an uneven illumination effect is generated. .

  In view of this, the creators of the present invention devoted themselves to research, design and assembly. Providing a lens structure that has a concentrated and uniform illumination light pattern, increases the type of manufacture and makes the manufacture more convenient, and improves its usability, is the motivation for the creation of the present invention.

  The main object of the present invention is to provide a lens structure that has a concentrated and uniform illumination light pattern, increases the number of manufacturing types, and makes the manufacturing convenient, thereby improving the usability.

  In order to achieve the above object, in the lens structure according to the present invention, a concave groove having a side wall that becomes a first step refracting surface that is gradually narrowed is provided in the center of the bottom surface, and the first reflective segment and the second reflective segment. And a third reflecting segment and a fourth reflecting segment, the reflecting portion having a side wall formed so as to be divided from bottom to top, and the fourth reflecting segment of the reflecting portion are coupled to each other. A projection unit provided; and a position regulating unit that joins the side walls of the reflection unit and the projection unit.

  Therefore, the lens structure according to the present invention is a combination design of the reflecting part, the projecting part, and the position restricting part, and the side wall of the reflecting part is divided into four different size reflecting segments, and is further narrowed down gradually. By being combined with one step refracting surface, by adjusting and processing a part of the structure and shape at the time of manufacture, it is possible to manufacture lens structure types having different degrees of concentration and uniform illumination light patterns. It becomes convenient.

1 is a perspective view showing a first embodiment of a lens structure according to the present invention. It is sectional drawing which shows the lens structure of FIG. It is sectional drawing which shows the 2nd Example of 1st Embodiment which concerns on this invention. It is sectional drawing which shows the 3rd Example of 1st Embodiment which concerns on this invention. It is sectional drawing which shows the 4th Example of 1st Embodiment which concerns on this invention. It is sectional drawing which shows 2nd Embodiment of the lens structure which concerns on this invention. It is a perspective view which shows the lens structure of FIG.

  Further understanding of the features, features, and technical contents of the present invention can be obtained by referring to the following detailed description and accompanying drawings of the present invention. However, the accompanying drawings are only for reference and explanation, and limit the present invention. It is not a thing.

<First Embodiment of the Invention>
As shown in FIGS. 1 to 5, the lens structure includes a reflecting portion 10, a projecting portion 20, and a position restricting portion 30. A concave groove 11 is provided in the center of the bottom surface of the reflecting portion 10. The first step refracting surface 110 is gradually narrowed, and the side walls of the reflecting portion 10 are the first reflecting segment 12, the second reflecting segment 13, the third reflecting segment 14, and the fourth reflecting segment. It is divided into 15 and from top to bottom. The projection unit 20 is coupled to the fourth reflection segment 15 of the reflection unit 10, and a projection surface 21 is provided on the upper surface of the projection unit 20. The position restricting unit 30 is coupled to the side wall between the reflecting unit 10 and the projecting unit 20.

  In the first embodiment, a light emitting diode (not shown) serving as a light source is mounted in the groove 11, and a plurality of radiated light is refracted through the first step refracting surface 110 and refracted. The light is emitted from the first reflective segment 12 to the fourth reflective segment 15, reflected by the projection unit 20, and projected on the projection surface 21 of the projection unit 20. Become.

  In the first embodiment, the side wall of the reflecting portion 10 is divided into four different-sized reflecting segments and is further narrowed down gradually in order to increase the number of lens structures. By being combined with one step refracting surface 110, a part of the structure and shape can be adjusted and processed at the time of manufacture, so the lens structure type with different degree of concentration and uniform illumination light pattern is convenient Can be manufactured.

  Further, as shown in FIG. 2, the first partition S <b> 1 and the second partition provided on the side wall of the reflector 10 from the bottom to the top in the section from the first reflective segment 12 to the fourth reflective segment 15. The reflector 10 is divided into four layers of reflective segments from the bottom to the top by S2, the third segment S3, the fourth segment S4, and the fifth segment S5. In the drawing, the bottom surface of the reflecting portion 10 is the X axis, the central axis of the reflecting portion 10 is the Y axis, the distance from the central axis to the side wall of the reflecting portion 10 is the X axis coordinate, and the height relative to the bottom surface of the reflecting portion 10 is Y. By using the axis coordinates, the position for each segment was clearly defined. FIGS. 2 to 5 respectively show the lens structures of the first to fourth examples of the first embodiment. Hereinafter, the coordinate positions (error ranges are +0. 05 mm to -0.05 mm), and describes the radius of curvature and surface curvature value for each reflective segment.

  1) Reflector 10 of the first embodiment (as shown in FIG. 2): first segment S1 (4.35, 0.00), second segment S2 (6.76, 2.99), first segment The third segment S3 (8.01, 5.00), the fourth segment S4 (10.11, 8.80), and the fifth segment S5 (12.96, 14.59). The curvature radius R1 of 12 is 20 mm, the surface curvature value is 0.05 mm, the curvature radius R2 of the second reflection segment 13 is 44 mm, the surface curvature value is 0.02 mm, and the curvature radius R3 of the third reflection segment 14 is 90 mm, the surface curvature value is 0.01 mm, the radius of curvature R4 of the fourth reflective segment 15 is 140 mm, and the surface curvature value is 0 mm.

  2) Reflector 10 of the second embodiment (as shown in FIG. 3): first segment S1 (4.57, 0.00), second segment S2 (6.99, 3.44), second segment The third segment S3 (9.25, 7.45), the fourth segment S4 (11.41, 12.07), and the fifth segment S5 (12.55, 14.60), and the first reflective segment The radius of curvature R1 of 12 is 38 mm, the range of the surface curvature value is 0.02 to 0.03 mm, the radius of curvature R2 of the second reflective segment 13 is 28 mm, and the range of the surface curvature value is 0.01 to 0.02 mm. The radius of curvature R3 of the third reflective segment 14 is 76 mm, the range of the surface curvature value is 0 to 0.01 mm, the radius of curvature R4 of the fourth reflective segment 15 is 52 mm, and the range of the surface curvature value is 0 to 0.00. 02 mm.

  3) Reflector 10 of the third embodiment (as shown in FIG. 4): first segment S1 (3.93, 0.00), second segment S2 (6.36, 3.08), second segment The third segment S3 (7.55, 4.94), the fourth segment S4 (9.71, 8.82), and the fifth segment S5 (12.48, 14.60), and the first reflective segment The radius of curvature R1 of 12 is 20 mm, the range of the surface curvature value is 0.02 to 0.07 mm, the radius of curvature R2 of the second reflective segment 13 is 47 mm, and the range of the surface curvature value is 0.01 to 0.02 mm. The radius of curvature R3 of the third reflective segment 14 is 62 mm, the surface curvature value is 0.01 mm, the radius of curvature R4 of the fourth reflective segment 15 is 144 mm, and the range of the surface curvature value is 0 to 0.01 mm.

  4) Reflector 10 of the fourth embodiment (as shown in FIG. 5): first segment S1 (3.93, 0.00), second segment S2 (6.36, 3.09), second segment The third segment S3 (7.56, 4.97), the fourth segment S4 (9.72, 8.85), and the fifth segment S5 (12.48, 14.59), and the first reflective segment The radius of curvature R1 of 12 is 23 mm, the range of the surface curvature value is 0.02 to 0.07 mm, the radius of curvature R2 of the second reflective segment 13 is 64 mm, and the range of the surface curvature value is 0.01 to 0.02 mm. The radius of curvature R3 of the third reflective segment 14 is 54 mm and the surface curvature value is 0.01 mm. The radius of curvature R4 of the fourth reflective segment 15 is 153 mm and the range of the surface curvature value is 0 to 0.01 mm.

  In the first embodiment, the reflection unit 10 is not limited to the above four examples, and may be implemented with other equivalent structures. In this case, the coordinate position for each segment, the radius of curvature of each reflection segment, and The surface curvature value may have different values and ranges.

  In addition, when the projection surface 21 of the projection unit 20 is not implemented with a convex lens structure, and in order to achieve the effect of uniforming the light collection and illuminance, as shown in FIG. Is squeezed gradually from bottom to top and divided into a plurality of refraction segments 111, 112, 113, 114, so that the light transmitted through these refraction segments 111-114 is the first reflection segment. The refracting can be performed corresponding to the 12th to fourth reflecting segments 15. The reflecting portion 10 of the lens structure of the present invention has its side wall gradually increased from bottom to top so as to have a reverse taper shape, the projection portion 20 becomes a columnar body, and the position restricting portion 30 has a ring shape.

  At the time of reflection, the light in the reflection unit 10 is reflected again on the projection surface 20 by the surface of each reflection segment, the projected light is concentrated, and a uniform illumination light pattern is formed. Each surface, such as 12, second reflective segment 13, third reflective segment 14, and fourth reflective segment 15, is implemented to have an arc-like, flat or concave arc-like structure.

<Second Embodiment of the Invention>
6 and 7 show the lens structure of the second embodiment according to the present invention. As shown in FIGS. 6 and 7, the present invention is different from the first embodiment described above in that the side wall of the reflector 10 is the first. The reflective segment 12, the second reflective segment 13, the third reflective segment 14, the fourth reflective segment 15, and the fifth reflective segment 16 are divided from the bottom to the top, and the projection unit 20 is the reflective unit 10. In that it is coupled to the fifth reflective segment 16.

  In 2nd Embodiment, since the height of the reflection part 10 is close to the height of the reflection part of 1st Embodiment, 2nd Embodiment is provided with six divisions to the side wall of the reflection part 10 from the bottom to the top. In FIG. 6, the coordinate positions for each partition are the first partition S1 (3.55, 0.00), the second partition S2 (4.90, 2.00), and the third partition S3 (7. 71, 6.19), fourth segment S4 (10.79, 10.99), fifth segment S5 (11.86, 13.00), sixth segment S6 (12.00, 14.60). ).

  Each surface of the first reflective segment 12, the second reflective segment 13, the third reflective segment 14, the fourth reflective segment 15, the fifth reflective segment 16, etc. is arc-shaped, flat or concave arc-shaped. Implemented to be a structure. The first reflecting segment 12 has a radius of curvature R1 of 150 mm and a surface curvature value of 0.01 mm, the second reflecting segment 13 has a radius of curvature R2 of 0 mm and a surface curvature value of 0 mm, and the third reflecting segment 14. The radius of curvature R3 is 150 mm, the surface curvature value is 0.01 mm, the radius of curvature R4 of the fourth reflective segment 15 is 20 mm, the surface curvature value is 0.05 mm, and the fifth reflective segment 1 is 6 flat. The curvature radius R5 is infinite, and the surface curvature value is 0 mm. Therefore, the type of lens structure is increased, the pattern of the projected illumination light can be finely adjusted, which is convenient for improving concentration and uniformity.

  The radius of curvature for each reflective segment described in this specification varies according to the range of the surface probability value of the reflective segment, and the radius of curvature for each reflective segment has a variation range, and the variation range is + 10% mm. For example, the radius of curvature R3 in FIG. 6 is 150 mm, and the actual value of the radius of curvature R3 after fluctuation is 150 ± 10% mm, that is, 135 to 165 mm. Is following.

  The above description is merely a preferred embodiment of the present invention, and does not limit the scope of the utility model registration claim of the present invention. However, it should be understood that such implementations should be included within the scope of the present invention.

10 Reflector
11 Groove
12 First reflective segment
13 Second reflective segment
14 Third reflective segment
15 Fourth reflective segment

16 Fifth reflective segment
20 Projection unit
21 Projection surface
30 Position restriction part
110 First step refracting surface 111, 112, 113, 114 Refraction segment
S1 First break
S2 Second break
S3 Third break
S4 Fourth break
S5 Fifth break
S6 6th break
R1-R5 radius of curvature

Claims (5)

A concave groove with a side wall that becomes the first step refracting surface that is gradually narrowed is provided in the center of the bottom surface, and is formed in the first reflective segment, the second reflective segment, the third reflective segment, and the fourth reflective segment. A reflection part configured with a side wall so as to be divided from bottom to top;
A projection unit coupled to the fourth reflection segment of the reflection unit and provided with a projection surface on an upper surface;
A lens structure including a position restricting portion that joins side walls of the reflecting portion and the projection portion.   The reflecting part gradually increases its side wall from bottom to top so as to have a reverse taper shape, the projection part is a columnar body, the position restricting part is ring-shaped, and the concave groove The lens structure according to claim 1, wherein the first step refracting surface is gradually narrowed from bottom to top and divided into a plurality of refractive segments.   Each surface of the first reflective segment, the second reflective segment, the third reflective segment, the fourth reflective segment, etc. is one of an arc shape, a flat shape, or a concave arc shape, The radius of curvature of the reflective segment is 20 to 150 mm, the surface curvature value of the first reflective segment is 0.01 to 0.07 mm, and the radius of curvature of the second reflective segment is 0 to 64 mm. The range of the surface curvature value of the second reflective segment is 0 to 0.02 mm, the range of the radius of curvature of the third reflective segment is 54 to 150 mm, and the range of the surface curvature value of the third reflective segment is 0 to 0.01 mm, the radius of curvature of the fourth reflective segment is 20 to 153 mm, the range of surface curvature value of the fourth reflective segment is 0 to 0.05 mm, Lens structure according to claim 1 the curvature radius of each morphism segment has a variation range, the variation range, characterized in that the interposed + 10% mm~-10% mm. A concave groove having a side wall that becomes a first step refracting surface that is gradually narrowed from bottom to top is provided in the center of the bottom surface, and the first reflective segment, the second reflective segment, the third reflective segment, and the fourth A reflective part configured with a side wall so as to be divided into a reflective segment and a fifth reflective segment from the bottom to the top;
A projection unit coupled to the fifth reflection segment of the reflection unit and provided with a projection surface on an upper surface;
A lens structure including a position restricting portion that joins side walls of the reflecting portion and the projecting portion to form a ring shape.   The reflective portion gradually increases its side wall from bottom to top so as to have a reverse taper shape, the projection portion becomes a columnar body, the first reflective segment, the second reflective segment, and the third Each surface of the reflective segment, the fourth reflective segment, and the fifth reflective segment is one of an arc shape, a flat shape, and a concave arc shape, and the radius of curvature of the first reflective segment is 20 The surface curvature value range of the first reflective segment is 0.01 to 0.07 mm, the radius of curvature of the second reflective segment is 0 to 64 mm, the surface curvature of the second reflective segment The range of the value is 0 to 0.02 mm, the range of the radius of curvature of the third reflective segment is 54 to 150 mm, the range of the surface curvature value of the third reflective segment is 0 to 0.01 mm, and the fourth of The radius of curvature of the projecting segment is 20 to 153 mm, the range of surface curvature value of the fourth reflective segment is 0 to 0.05 mm, and the radius of curvature of the fifth reflective segment is close to infinity. The surface curvature value of the reflective segment is 0 mm, and the radius of curvature of each reflective segment has a variation range, and the variation range is interposed between + 10% mm and −10% mm. The lens structure described.

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