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Light emitting diode (LED) flood lens, LED flood lamp and lighting equipment

A technology of LED floodlight and LED light source, applied in the field of lighting, can solve the problems of low light utilization rate, unsatisfactory floodlight effect, insufficient uniform illumination, etc., and achieve the effect of high light utilization rate

Active Publication Date: 2014-12-10
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The floodlight effect achieved by the above-mentioned processing methods is not ideal, which is manifested in the uneven illuminance, the high brightness in the middle of the lighting space, and the low light utilization rate.
Moreover, the side rotation generatrix of existing lenses is generally a straight line or a parabola, so the size of the lens that meets the light distribution requirements is generally slightly larger

Method used

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  • Light emitting diode (LED) flood lens, LED flood lamp and lighting equipment
  • Light emitting diode (LED) flood lens, LED flood lamp and lighting equipment
  • Light emitting diode (LED) flood lens, LED flood lamp and lighting equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 2 A schematic diagram of the three-dimensional structure of the LED flood lens provided by the first embodiment of the present invention is shown, image 3 A schematic cross-sectional structure diagram of the LED flood lens provided by the first embodiment of the present invention is shown, Figure 4 It shows a side view structural schematic diagram of the LED flood lens provided by the first embodiment of the present invention, Figure 5 The light path diagram of the LED flood lens provided by the first embodiment of the present invention is shown, and for the convenience of description, only the parts related to this embodiment are shown.

[0038] Please refer to the attached figure 2 , 3 , the LED flood lens 1 is mainly used to cover the outside of the LED light source 2 to form a small-sized LED illuminant. Specifically, the LED flood lens 1 has a structure of a rotating body, and has a circular bottom surface 11 and a light-emitting surface 12 . The l...

Embodiment 2

[0048] Image 6 It shows a schematic diagram of the side view structure of the LED flood lens provided by the second embodiment of the present invention, Figure 7 It is a schematic diagram of the light distribution curve of the LED flood lens provided by the second embodiment of the present invention. For the convenience of description, only the parts related to this embodiment are shown.

[0049] Embodiments of the present invention provide a preferred structure of an LED flood lens on the basis of the foregoing embodiments. specific combination Figure 4 In this embodiment, the opening angle of each line segment of the broken line segment relative to the central point of the bottom of the flood lens is set to 10±0.5°, more preferably 10°.

[0050] Further, the multi-segment polyline includes six line segments, that is, the first selection segment, the second line segment, the third line segment, the fourth line segment, the fifth line segment, and the sixth line segment, ...

Embodiment 3

[0056] The embodiment of the present invention further improves the flood lens provided by the above embodiment. Specifically, an anti-reflection film can be coated on the side 13 of the flood lens 1 to prevent light from being emitted through the side 13, so as to further improve the utilization rate of light.

[0057] In the present invention, a hemispherical groove for accommodating the LED light source is arranged coaxially at the bottom of the floodlight lens, so that the light emitted by the LED light source is initially diffused, and moderately weakens the phenomenon that the light intensity in the center of the outgoing light is too high; the outer surface of the floodlight lens It is designed as a rotating curved surface with multi-segment broken lines as the generatrix of rotation, and the opening angle of each line segment relative to the center point of the bottom of the floodlight lens, and the angle between each line segment and the central axis of the floodlight l...

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Abstract

The invention is applicable to the field of lighting, and provides a light emitting diode (LED) flood lens, an LED flood lamp and lighting equipment. A hemispherical groove is formed at the bottom of the flood lens to hold an LED, and an emergence surface is a plane; an external side surface is formed by rotating a broken line 360 degrees around a central shaft; the central shaft is superposed with the central axis of the groove; the broken line comprises at least three segments, and the opening angle between each segment and the central point at the bottom of the flood lens is the same, specifically 9 to 11 degrees; the included angle between each segment and the central shaft is 0 to 39 degrees; and the ratio of the outer diameter of the emergence surface to the depth of the lens is 1.12 to 1.16, and the emergence angle of the flood lens is 39.5 to 40.5 degrees. According to the LED flood lens, the groove is formed at the bottom of the flood lens, the external side surface of the lens is designed to be a rotating curved surface taking a plurality of broken lines as the rotating generatrix, and the opening angle between each segment and the central point at the bottom of the lens and the included angle between each segment and the central shaft of the lens are limited, so that the utilization rate of light is improved while the flood lens obtains uniform illumination.

Description

technical field [0001] The invention belongs to the field of lighting, and in particular relates to an LED floodlight lens, an LED floodlight and lighting equipment. Background technique [0002] At present, the floodlight method of LED is generally based on the light distribution of the reflector cup, but the floodlight distributed by the reflector cup usually has a phenomenon of high light intensity in the middle part, and the treatment of the light type is not very ideal, especially when it is close to the LED light. The light intensity near the axis is greater. The existing technology also uses a concave lens to flood the LED, but this method has a relatively low utilization rate of the LED luminous flux, which means that the light with a large luminous angle cannot be used, and eventually the light utilization rate of the lamp is too low. At present, there is also a kind of floodlight lens, which is in the LED light-collecting total reflection lens (such as figure 1 A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/04F21V19/00F21S2/00F21Y101/02
Inventor 周明杰罗英达
Owner OCEANS KING LIGHTING SCI&TECH CO LTD