Lens, LED module and illuminating system

Abstract

The invention discloses a lens, an LED module and an illuminating system. The illuminating system comprises an irradiate surface and at least one LED module irradiating the irradiated surface. The LED module comprises the lens and an LED matched with the lens. The lens comprises an optical axis, an incident surface, an emergent curved surface protruding from the incident surface, a symmetrical section arranged along the optical axis, and a rotary section which is perpendicular to the symmetrical section and is arranged along the optical axis. The curvature radius of the contour line of intersection between the symmetrical section and the emergent curved surface is increased or decreased continuously. The emergent curved surface comprises a left emergent surface body and a right emergent surface body, wherein the left emergent surface body and the right emergent surface body are symmetrical about the symmetrical section. The intersection line between the left emergent surface body and the rotary section and the intersection line between the right emergent surface body and the rotary section are both arc restraint lines, and each arc restraint line accounts for a quarter of an ellipse. The arc restraint lines have a converging effect on light. The left emergent surface body and the right emergent surface body are formed by conducting scanning the contour line with the arc restraint lines as the tracks. By the adoption of the lens, the LED module and the illuminating system, the uniformity and consistency of far illuminance and near illuminance can be achieved.

Description

Technical field [0001] The invention relates to a lighting system, in particular to a lens, LED module and lighting system with uniform light output. Background technique [0002] Compared with traditional lighting lamps, LED lamps have the advantages of small size, low energy consumption and high light efficiency, so LED lamps can be quickly promoted and applied. At the same time, people are constantly pursuing better lighting effects, so they also hope that LED lamps can meet various lighting needs. Especially in the case of large area and long-distance irradiation, it is desirable to make the illuminance of the irradiated area approximately uniform. Since the first optical design performed during the packaging of the LED generally cannot meet the lighting requirements, it is necessary to perform the secondary optical design through lens coordination to meet the specific light distribution requirements. According to the law of light irradiation, compared with the irradiated a...

AI Technical Summary

Problems solved by technology

Therefore, there is also the problem that the illuminance gradually weakens in the illuminated area of ​​the LED from near to far.

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