LENS DEVICE AND LED STRIP LIGHT HAVING SAME

摘要

A LED strip light includes at least one LED chip and a lens device. The lens device includes at least one optical axis, a diffuser plate, a spread-light lens disposed on the diffuser plate and including a plane light incidence surface being perpendicular to the at least one optical axis, and a first convex light emitting surface and a second convex light emitting surface which are positioned at two sides of the at least one optical axis respectively. On a cross section taken along the at least one optical axis, an arc length and a radius of curvature of a profile of the first convex light emitting surface being larger than that of a profile of the second convex light emitting surface, irradiation distance of emergent light of the first convex light emitting surface being less than that of emergent light of the second convex light emitting surface.

主权项

1. A lens device, comprising:
at least an optical axis; a diffuser plate being perpendicular to the at least one optical axis, the diffuser plate being configured for diffusing the point light source into area source; and a spread-light lens disposed on the diffuser plate and comprising a plane light incidence surface being perpendicular to the at least one optical axis, and a first convex light emitting surface and a second convex light emitting surface which are positioned at two sides of the at least one optical axis respectively, on a cross section taken along the at least one optical axis, an arc length and a radius of curvature of a profile of the first convex light emitting surface being larger than that of a profile of the second convex light emitting surface, an irradiation distance of emergent light of the first convex light emitting surface being less than that of emergent light of the second convex light emitting surface.