KR20150081088A - Zoom lens with multi-layers for illumination - Google Patents

Abstract

The present invention provides a lens for lighting, capable of solving problems that the existing lens for lighting is not able to accurately control luminous intensity and ray coverage and light is not able to change. The lens of the present invention includes a body (1). The body (1) includes a first surface (11), a second surface (12), and a dented part (13). A ring-shape curve (14) is connected between the first surface (11) and the second surface (12) (reference to the drawing 2). The ring-shape curve (14) is formed as two arcs (15), symmetrical to each other, are combined with each other (reference to the drawing 1). The two arcs (15) include a first focus (151) placed at an end, a central focus (152) placed at the center, and a second focus (153) placed at the other end. The lens for lighting is the same as mentioned above.

Description

ZOOM LENS WITH MULTI-LAYERS FOR ILLUMINATION

TECHNICAL FIELD [0001] The present invention relates to an illumination lens, and more particularly, to a technique for controlling light type and optical path by using curved surfaces having a plurality of foci formed by annular curved lines adjacent to each other between a first surface and a second surface of a lens body .

Currently, many of the light sources in the lighting apparatus use LEDs. The LED has advantages of energy saving, power saving, and long time use. However, a relatively large number of LEDs are used to increase the luminous intensity of a lighting device using LEDs. Therefore, apparently, the subject has a plurality of light spots, and the subject tends to be dazzled by a plurality of light spots. Therefore, it is the best measure to increase the luminous intensity by combining the illumination device and the lens.

In the "lens interchangeable light emitting diode illumination device" described in Patent Document 1, one light emitting diode is provided in one lamp cup. At the rear end of the lamp cup, a lid seat on which a circuit board is mounted is provided. At the front end of the lamp cup, a lid provided with irradiation holes is provided. The irradiated blood is provided with a detachable lens located on the front side of the light emitting diode. This lens has various shapes and colors. Therefore, by changing another lens, the appearance or illumination effect of the illumination device can be changed.

The above-mentioned conventional lens is a convex lens. Further, by using a lens having a different degree of arc, the light beam of the light emitting diode illumination device is changed. However, this change is limited to the irradiation distance and area. The path of the ray can not be changed. For example, a light for a vehicle or a light for a bicycle needs to be capable of irradiating the road surface toward the lower side. However, the current rays are emitting in a ring. Therefore, half of the light is irradiated to the upper side of the lamp. This affects the user's gaze, which may cause danger.

Taiwan Patent No. 343112

It is an object of the present invention to provide a lens for illumination which solves the problem that the conventional illumination lens can not control the range of light and the luminosity accurately and the problem that the light is not changed.

The illumination lens of the present invention is used for illumination and includes a lens body. The lens body has a first surface, a second surface, and an annular curve connecting the first surface and the second surface. The annular curves are formed by combining two symmetrical arcs. The two lines have a first focus located at one end, a center located at the center, and a second focus located at the other end. Thus, the first surface forms a curved surface having a plurality of foci.

In the illumination lens according to the present invention, the lens body is configured such that the illuminance of the first arched line segment, which is a line segment formed in an arc shape from the first focus to the middle point, is a line segment formed in the arc from the middle point to the second focus, Is smaller than that of Fig.

In the illumination lens according to the present invention, the lens body is symmetrical with respect to a line segment formed in an arc shape from the first focus point to the middle point, and a line segment formed in an arc shape from the middle point to the second focus point.

In the illumination lens of the present invention, the lens body has a concave portion formed on an inner side surface thereof.

In the illumination lens of the present invention, the lens body is engageable with the illumination device. The lighting device includes a stanchion and an LED light source. The lighting apparatus includes a vehicle light, a street light, a flashlight, and a searchlight.

The advantages of the illumination lens of the present invention are as follows.

1. When the LED (a plurality of LEDs or one LED) is used as a light source, the light is uniformly projected by a curved surface having a plurality of foci formed by an annular curve of the lens body, and is controlled to a predetermined position. The light and dark boundary due to the assistance of the light-shielding pieces (light-shielding pieces) does not occur, so that the loss of the overall luminous intensity can be reduced.

2. It is possible to reduce the number of LEDs, thereby reducing the cost.

3. By using the LED as a light source, it is possible to reduce heat generation and increase the competitiveness of the product.

4. A curved surface having a plurality of foci formed by the annular curved line of the lens body can have an elliptical shape, a circular shape, or a semicircular shape, so that it can cope with various needs.

5. The lens body of the present invention is capable of improving the faint feeling caused by a plurality of conventional light sources by uniformly administering light, and it is possible to suppress eye fatigue.

1 is a perspective view showing a lens body according to a first embodiment of the present invention.
2 is a side view showing the lens body according to the first embodiment of the present invention.
3 is a schematic view showing a state in which the lens body according to the first embodiment of the present invention is coupled to a lamp;
4 is a schematic diagram showing the projection effect of the lens body according to the first embodiment of the present invention.
5 is a side view showing a lens main body according to a second embodiment of the present invention.
6 is a schematic diagram showing the projection effect of the lens body according to the second embodiment of the present invention.

Carrying out the invention  Form for

(First Embodiment)

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

As shown in Figs. 1 and 2, the illumination lens according to the first embodiment of the present invention includes a lens body 1. Fig. The lens body 1 has a first surface 11, a second surface 12, and a recess 13. An annular curve 14 is connected between the first surface 11 and the second surface 12 (see FIG. 2). The annular curve 14 is formed by coupling two arcs 15 symmetrical to each other (see Fig. 1). The two lines 15 have a first focus 151 located at one end, a center point 152 located at the center, and a second focus 153 located at the other end (see FIG. 2). The illumination lens is as described above.

The lens body 1 of the present invention can be used in combination with various fixtures. For example, it can be applied to a vehicle light, a street light, a flashlight, a searchlight, and the like. As shown in FIG. 3, the lighting fixture 2 includes a seat 21 and an LED light source 22. The LED light source 22 is provided in the seat 21. The first lug 21 is provided with a first engaging portion 23 therein. The lens body 1 is provided with a second engaging portion 130 in the concave portion 13. The lens body 1 is fixed to the lens barrel 2 by the second engaging part 130 being engaged with the first engaging part 23 of the backrest 21. The first engagement portion 23 of the seat 21 is provided with a male screw portion. The second engagement portion 130 of the lens body 1 is provided with a female screw portion.

A first embodiment of the present invention is shown in Figs. The line 15 of the lens body 1 is divided into a first arcuate line segment 154 which is a line segment formed in an arc shape from the first focus 151 to the middle point 152 and a second arcuate line segment 154 extending from the midpoint 152 to the second focus 153 And a second arcuate line segment 155, which is a line segment formed in an arc shape. In addition, the elevation of the first elevation line segment 154 is smaller than that of the second elevation line segment 155. The lens body 1 is applied to a bicycle light. The light projected from the LED light source 22 is projected in the advancing direction through the first arc-shaped line segment 154. The second arctic line segment 155 emits light in a downward direction. Thereby, the light is concentrated in the forward direction and the downward direction. The front direction of the user and the road surface are easy to see, so that the running safety can be improved.

(Second Embodiment)

A second embodiment of the present invention is shown in Figs. 5 and 6. Fig. In the second embodiment, the two line lines 15A of the lens body 1A are composed of an arc line segment 154A, which is a line segment formed in an arc shape from the first focal point 151A to the middle point 152A, Arcuate line segments 154A, which are line segments formed from the line 153A to the center point 152A, are symmetrical with respect to the center 152A. As shown in Fig. 6, the lens body 1A is applied to a searchlight. Light projected from the LED light source 22 concentrates in the forward direction through the arc-shaped line segment 154A and emits. Thereby, the light can be projected quickly, and the light projected onto the target can be concentrated. In addition, the lightness and accuracy of light can be enhanced.

INDUSTRIAL APPLICABILITY As described above, the present invention achieves the expected objects and effects. It is also superior to the conventional one. The above-described embodiment is a preferred embodiment of the present invention, and does not limit the claims of the present invention. All equivalents and modifications within the technical scope of the means for solving the problems of the present invention are included in the claims of the present invention.

1, 1A lens body
11 First surface
12 Second surface
13 concave portion
130 second coupling portion
14 Annular curves
15, 15A
151, 151A First focus
152, 152A Focus
153, 153A Second focus
154 First line segment
154A line segment
155 2nd line segment
2 lights
21st
22 LED light source
23 First coupling portion

Claims (4)

It is a lens used for illumination,
And a lens body,
Wherein the lens body has a first surface, a second surface, and an annular curve connecting the first surface and the second surface,
The annular curve is formed by combining two symmetrical arcs,
Characterized in that the two lines have a first focus at one end, a middle point at the center, and a second focus at the other end, wherein the first surface is a curved surface with a plurality of foci lens. 2. The lens barrel according to claim 1, wherein the lens body has a shape in which an arc of the first arc-shaped line segment, which is a line segment formed in an arc shape from the first focus to the middle point, And the second lens group is formed to be smaller than the second lens group. 2. The lens barrel according to claim 1, wherein the lens body is symmetrical with respect to a line segment formed in an arc from the first focus to the middle point and a line segment formed in an arc from the middle point to the second focus, Lens for illumination. The illumination lens according to claim 1, wherein the lens body has a concave portion formed on an inner side surface thereof.

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