CN203240490U - Telescopic lens - Google Patents

Abstract

The utility model discloses a telescopic lens, which comprises a body and a cover body, wherein the body is a cup-shaped structure with a wide top and a narrow bottom, the top is provided with a light-emitting surface, the bottom is provided with a light-entering surface, the center of the light-emitting surface is concavely provided with a slot, and the center of the light-entering surface is concavely provided with a containing space for containing a light-emitting diode. The cover body is a disc-shaped structure, the bottom surface of the cover body is arranged corresponding to the light-emitting surface, and the center of the cover body is convexly provided with an embedding part for embedding in the slot to extend the distance between the cover body and the body, so that the illumination intensity and the illumination range projected by the light-emitting diode are adjusted. Thus, the illumination effect projected by the light emitting diode can be flexibly adjusted, and the LED lamp is suitable for various lamps.

Description

telescoping lens

technical field

The utility model relates to the technical field of optical lenses, in particular to a telescopic lens, which can change and adjust the light-emitting angle and projected illuminance of the original light-emitting diodes by the three-dimensional optical principle, and is suitable for different requirements of various lamps.

Background technique

In recent years, light emitting diodes (Light Emitting Diode, LED) have been widely used in various lamps due to their low power consumption, high efficiency and long life. However, the original light emitting angle of LED is generally only about 120°, which limits the lighting range, and the light source emitted by LED is more concentrated in the center, resulting in a huge difference in brightness between the center and the periphery, which cannot provide a uniform lighting effect . In this way, all kinds of LED lamps using LED as the light source will be limited by the characteristics of the original LED light source, such as small light angle and narrow light distribution range, resulting in a small illumination range and poor light uniformity lighting effects, making it difficult to meet the requirements of use. or needs. In view of this, LED lamps are equipped with an optical lens to reflect or refract the light emitted by the original LED light source by using the secondary optical principle of the optical lens, so as to adjust and improve the projected illuminance, luminous angle and light path distribution of the original LED light source. Various light layouts with better applicability can be produced to provide the best lighting state under various conditions of use.

In addition, affected by the trend of miniaturization of devices, or in order to meet market demands such as high light uniformity, high illuminance, and high irradiation range, a single LED lamp may be equipped with multiple LEDs, and each LED is equipped with an optical lens. The structural design and appearance volume of the optical lens are limited, which affects the secondary optical effect that the optical lens can produce, causing the LED lamps to fail to provide the best lighting state. In this regard, how to further utilize the refraction and reflection principles of tertiary optics to improve the optical path adjustment function of optical lenses is a subject that relevant practitioners in this field want to improve.

Utility model content

The purpose of this utility model is to provide a telescopic lens, which uses the refraction and reflection principles of secondary and tertiary optics to adjust the light-emitting angle and projected illuminance of the original light-emitting diodes, so as to improve the lighting quality and increase the adaptability.

In order to achieve the above purpose, the telescopic lens of the present invention has a body, which is a cup-shaped structure with a wide top and a narrow bottom, and a light-emitting surface is provided on the top, a light-incoming surface is provided on the bottom, and the center of the light-incoming surface is formed by a concave An accommodating space for accommodating a light-emitting diode and elastically adjusting the light effect projected by the light-emitting diode, characterized in that: the retractable lens has a cover, and the center of the light-emitting surface of the body is recessed to form a Slot; the cover is a disc-shaped structure, its bottom surface is set corresponding to the light-emitting surface, and the center is protruded to form an insertion part for being embedded in the slot to expand and contract between the cover and the body The distance is used to adjust the light intensity and light range projected by the LED.

According to the purpose of this utility model, the retractable lens has a body, which is a cup-shaped structure with a wide top and a narrow bottom, and a light exit surface is provided on the top, a light incident surface is provided at the bottom, and the center of the light incident surface is recessed to form a The accommodating space is used for accommodating a light emitting diode, and elastically adjusts the light effect projected by the light emitting diode. on the light-emitting surface, and by shortening the distance between the light-path adjusting means and the light-emitting surface, the light intensity projected by the light-emitting diode is enhanced; by extending the distance between the light-path adjusting means and the light-emitting surface, the light emitting The range of light projected by the diode is extended. In this way, after the light emitted by the light-emitting diode is shifted by the secondary optical refraction or reflection of the body, the light path direction will be further changed by the tertiary optical influence formed by the cover, so as to improve the lighting quality.

Wherein, the center of the light-incident surface is concaved toward the light-emitting surface with a convex arc curve to form the accommodating space of a conical spatial structure, and the conical side of the accommodating space is in a concave arc shape, and the slot is The square column-shaped space structure, and the insertion part is arranged in a corresponding square column shape. The light-emitting surface and the bottom surface of the cover body have a honeycomb surface structure corresponding to each other, and the top surface of the cover body is treated with a matte surface to properly adjust the direction of the light path to form an optimal illuminance distribution.

In addition, the retractable lens further includes an engaging body, which is arranged on one side of the main body for engaging and fixing relative to an LED substrate, so as to facilitate the assembly of the lamp.

In summary, the utility model adjusts the distance between the light-emitting surface of the body and the lower surface of the cover by stretching the cover, so as to elastically adjust the light emitted by the light-emitting diode between the secondary optics and the tertiary optics. The degree of offset generated enables the projection to form lighting effects applicable to various fields. the

Description of drawings

Fig. 1 is a top view schematic diagram of a preferred embodiment of the utility model;

Fig. 2 is the bottom view schematic diagram of the preferred embodiment of the utility model;

Fig. 3 is a schematic diagram of a body of a preferred embodiment of the present invention;

Fig. 4 is a sectional view of a body of a preferred embodiment of the present invention;

Fig. 5 is a schematic diagram of a cover body of a preferred embodiment of the present invention;

Fig. 6 is a sectional view of a cover body of a preferred embodiment of the present invention;

Fig. 7 is a light trace diagram of a preferred embodiment of the present invention;

Fig. 8 is a light distribution curve diagram of a preferred embodiment of the present invention;

Fig. 9 is an irradiation diagram of a preferred embodiment of the present invention;

Fig. 10 is a light trace diagram of the second preferred embodiment of the present invention;

Fig. 11 is a light distribution curve diagram of the second preferred embodiment of the present invention;

Fig. 12 is the radiation diagram of the second preferred embodiment of the present invention.

Detailed ways

Please refer to Figures 1 and 2, which are respectively a top view and a bottom view of a preferred embodiment of the present invention. As shown in the figure, the telescopic lens 1 can flexibly adjust the projected illuminance of the light source and the projected range of the light source to meet the different requirements for lighting quality in various fields and is suitable for various lamps, and it has a body 10 and a light path adjustment means . The body 10 is a cup-shaped structure with a wide top and a narrow bottom, and the top is provided with a light-emitting surface 100, and the bottom is provided with a light-incident surface 101. The center of the light-emitting surface 100 is recessed to form a slot 1000. The place is recessed to form an accommodating space for accommodating a light emitting diode (not shown in the figure). The optical path adjusting means is used to be assembled with the body 10 and covered on the light emitting surface 100, and by shortening the distance between the optical path adjusting means and the light emitting surface 100, the light intensity projected by the light emitting diode is enhanced. . At the same time, by extending the distance between the light path adjusting means and the light emitting surface 100, the range of light projected by the light emitting diode is enlarged.

Moreover, the optical path adjustment means is a cover body 11 of a disc-shaped structure, the bottom surface of which is arranged corresponding to the light-emitting surface 100, and an insertion part 110 is protruded at the center for being embedded in the slot. The distance between the cover body 11 and the main body 10 can be elastically stretched, so that the intensity of light and the range of light can be flexibly adjusted by changing the effect of the principle of refraction and reflection of tertiary optics on the light projected by the LED.

Please refer to Figures 3-6, which are a schematic view of the main body, a sectional view of the main body, a schematic view of the cover, and a sectional view of the cover, respectively, according to a preferred embodiment of the present invention. As shown in the figure, the slot 1000 of the body 10 has a square columnar space structure, so the insertion part 110 is arranged in a square column shape, and the slot 1000 and the insertion part 110 can be provided oppositely. At least one fixing member (not shown in the figure) is used to engage and fix the insertion portion 110 in the slot 1000 .

In order to improve the effect of the main body 10 improving the light path distribution of the light-emitting diode by the principle of secondary optics, the center of the light-incident surface 101 is concaved toward the light-emitting surface 100 with a convex arc to form a conical space structure. The accommodating space, and the tapered side of the accommodating space is in a concave arc shape, so as to further evenly diffuse the light originally emitted by the light emitting diode.

Furthermore, the top surface of the cover 11 can be treated with a matte surface, and the light-emitting surface 100 and the bottom surface of the cover 11 have a honeycomb surface structure corresponding to each other, so as to properly adjust the direction of the light path to form an optimal illuminance distribution. As shown in Figures 7, 8 and 9, which are respectively a light trace diagram, a light distribution curve diagram and an irradiation diagram of a preferred embodiment of the present invention, when the cover 11 is compressed to join the body 10, even the bottom surface When the light-emitting surface 100 is attached, the light projected by the light-emitting diode through the retractable lens 1 will have a lighting effect in which the normalized light intensity is about 1 and the light range is concentrated toward the center. Conversely, when the cover 11 is stretched away from the main body 10, even if its bottom surface covers the light-emitting surface 100 at a distance, as shown in FIGS. Embodiment 2 Light trace diagram, light distribution curve diagram and radiation diagram, the light projected by the light-emitting diode through the telescopic lens 1 will show a lighting effect in which the light range is diffused to the surroundings and the normalized light intensity is still about 1 . It can be known that the greater the distance between the main body 10 and the cover 11, the wider the illumination range of the illumination effect projected by the LED, but the average illumination intensity is relatively reduced.

By the way, the retractable lens 1 can further include an engaging body 12, which is arranged on one side of the body 10, for engaging and fixing with respect to an LED substrate (not shown in the figure), so that it is convenient Lighting assembly.

Of course, the above are only preferred embodiments of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application are included in the utility model patent application within range.

Claims (6)

1. A telescopic lens, which has a body, which is a cup-shaped structure with a wide top and a narrow bottom, and a light-emitting surface is provided on the top, a light-incoming surface is provided on the bottom, and the center of the light-incoming surface is recessed to form an accommodating space , for accommodating a light emitting diode and flexibly adjusting the light effect projected by the light emitting diode, characterized in that: The retractable lens has a cover, and the center of the light-emitting surface of the body is concavely formed to form a slot; The insertion part is used to be embedded in the slot to expand and contract the distance between the cover and the body, so as to adjust the light intensity and light range projected by the light emitting diode. 2 . The retractable lens according to claim 1 , wherein the light-emitting surface and the bottom surface of the cover body have honeycomb surface structures corresponding to each other. 3 . 3. The retractable lens according to claim 1, characterized in that: the top surface of the cover is treated with fog. 4. The telescopic lens according to claim 1, characterized in that: the center of the light-incident surface is concave and constricted toward the light-emitting surface with a convex arc at the center to form the accommodating space of a conical spatial structure, and the accommodating The cone side of the space is concave arc-shaped. 5 . The telescopic lens according to claim 1 , wherein the slot is a square columnar space structure, and the insertion part is arranged in a corresponding square columnar shape. 6 . 6 . The retractable lens according to claim 1 , characterized in that it comprises an engaging body, the engaging body is disposed on one side of the main body, and is used for being engaged and fixed relative to an LED substrate. 7 .

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