Strip-shaped spreadlight lens and LED strip light

Abstract

The invention discloses a strip-shaped spreadlight lens and an LED strip light. The LED strip light comprises at least one LED and a strip-shaped spreadlight lens. The strip-shaped spreadlight lens comprises multiple optical axes, an incident surface, a first convex lens emergent surface and a second convex lens emergent surface, wherein the optical axes are arranged into a row at intervals in parallel, the radius of curvature of a contour line on the first convex lens emergent surface becomes smaller gradually towards the optical axes, and the radius of curvature of a contour line on the second convex lens emergent surface becomes smaller gradually in the direction away from the optical axes; the minimum radius of curvature of the contour line on the first convex lens emergent surface is larger than the maximum radius of curvature of the contour line on the second convex lens emergent surface; light passing through the first convex lens emergent surface shines in the vicinity, and light passing through the second convex lens emergent surface shines in the distance; the number of the LEDs is identical with that of the optical axes, and each LED is arranged along the corresponding optical axis. According to the LED strip light, the illuminance obtained when light shines in the distance is identical with that obtained when light shines in the vicinity.

Description

Technical field [0001] The invention relates to a lens and an LED strip light using the lens, in particular to a strip polarized lens and an LED strip light. Background technique [0002] In the context of energy saving and environmental protection, LED lamps are increasingly used in the home and commercial lighting fields because of their high light-emitting efficiency and good light-gathering performance. Since the once-packaged LED chip distributes light within its light output angle range and cannot meet the lighting requirements in most cases, it is generally necessary to use a lens for secondary light distribution processing. However, in the existing lighting field, there is a need to have substantially uniform illuminance both in the distance and near the illumination. Generally, when the light source illuminates at different distances, because the far-illuminated surface has a larger irradiation area than the near-illuminated surface, the light energy per unit area on th...

AI Technical Summary

Problems solved by technology

However, this method of supplementary light still has the problem of uneven light distribution in the near and transitional areas of illumination, which makes the overall visual experience poor.

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