Abstract: An LED unit includes an LED and a lens receiving the LED. The lens includes a first light-incident face confronting the LED to refract the light emitted from the LED with a small angle into the lens, a second light-incident face surrounding the LED to refract the light emitted from the LED with a large angle into the lens, a light-reflecting face to reflect the light from the second light-incident face towards a top of the LED, a first light-emergent face to refract the light from the first light-incident face out of the lens, and a second light-emergent face to refract the light from the light-reflecting face out of the lens.

Abstract: An LED unit includes an LED and a lens mounted on the LED. The lens includes a light-incident face adjacent to the LED, a light-emergent face remote from the LED, and a light-reflecting face between the light-incident face and the light-emergent face. The light-incident face includes a first light-incident face which faces the LED, and the light-emergent face includes a first light-emergent face located opposite to the first light-incident face. The first light-emergent face is a continuously curved face which has a curvature firstly increasing gradually and then decreasing gradually along a bottom-to-top direction of the lens.

Abstract: An LED unit includes a printed circuit board, an LED mounted on the printed circuit board, and a lens covering the LED and fixed on the printed circuit board. The lens includes a pedestal and an optical element connected to the pedestal. The lens has a light-incident face formed in an interior thereof for receiving light emitted from the LED into the lens, and a light-emergent face formed on an outside thereof for refracting the light out of the lens. The optical element has two opposite sides longer than the other two opposite sides thereof so that the light pattern modulated by the optical element has two opposite ends wider than a middle thereof.

Abstract: An LED module includes a printed circuit board, an LED mounted on the printed circuit board, and a lens fixed on the printed circuit board and covering the LED for refracting light emitted by the LED. The lens has a concaved inner face for incidence of the light and an opposite convex outer face for the light refracting out thereof. The inner face is aspherical. The outer face is spherical. The inner and outer faces are centrosymmetrical relative to axes, respectively, which are coincident with each other. A curvature of the inner face is gradually reduced from a center to an edge thereof.

Abstract: An LED lamp includes a frame, a bracket connected to the frame, two LED modules and driving modules received between the frame and the bracket, and a backplate, a reflective plate, a light guide, a diffusion plate and a cover sequentially sandwiched between the frame and the bracket. The LED modules are oriented towards two opposite lateral sides of the light guide. The light guide has a large amount of scattering dots formed on a back face thereof. The scattering dots are arranged in multiple columns. The sizes of the dots in each column are identical to each other, and the sizes of the dots in different columns gradually increase from two opposite sides towards a middle of the light guide.

Abstract: An LED lamp includes an LED and a lens covering thereon. The LED has an optical axis. The lens includes a light incidence surface adjacent to the LED and a light emission surface opposite to the light incidence surface. A first imaginary plane and a second imaginary plane intersect at the optical axis of the LED, the light emission surface of the lens is symmetric about the first and second imaginary planes, respectively. In the first imaginary plane, light emitted from the light emission surface distribute regions which a light emitting angle of the LED lamp ranges from 0° to about 45°. In the second imaginary plane, light emitted from the light emission surface distribute regions which a light emitting angle of the LED lamp ranges from 0° to about 75°.

Abstract: A lens includes a light incident surface and a light exiting surface. The light exiting surface includes a first curved surface, a first convex surface, a second convex surface, a second curved surface, and a third curved surface. The first curved surface is located at the center of the light exiting surface. The first and second convex surfaces are arranged at two opposite sides of the first curved surface respectively for converging the light exiting therefrom, the first convex surface, the first curved surface, and the second convex surface connect in sequence along a first direction. The first and third curved surface are arranged at another two opposite sides of the first curved surface respectively; the second curved surface, the first curved surface, and the third curved surface connect in sequence along a second direction substantially perpendicular to the first direction.

Abstract: A lens includes a light incident surface and a light exiting surface. The light exiting surface includes a first concave surface, a first convex surface, a second convex surface, a first curved surface, and a second curved surface. The first concave surface is located at the center of the light exiting surface for diverging the light exiting therefrom. The first and second convex surface are arranged at two opposite sides of the first concave surface respectively for converging the light exiting therefrom; the first convex surface, the first concave surface, and the second convex surface connect in sequence along a first direction. The first and second curved surfaces are arranged at another two opposite sides of the first concave surface respectively; the first curved surface, the first concave surface, and the second curved surface connect in sequence along a second direction perpendicular to the first direction.

Abstract: An LED module includes an LED having a central axis I, and a lens. The lens has an incident face for incidence of the light of the LED and an opposite emitting face for refracting the light of the LED out of the lens. The emitting face of the lens has a central axis II. The central axis II is offset from the central axis I and located at one side of a plane ZOX of an XYZ coordinate with an original O which is located at a center of the LED, in which the central axis I is coincident with the Z axis. The light beams emitted from the one side of the plane ZOX are stronger than the light beams emitted from the another side of the plane ZOX after the light beams emitted from the LED pass through the lens.

Abstract: An LED (light emitting diode) unit includes an LED and a lens mounted on the LED. The lens defines a passageway at a central portion thereof. The passageway runs through the lens. The lens includes a concave light emitting surface at a top thereof. Light output from the LED with a small light-emission angle travels directly through the passageway, without a loss of light intensity.

Abstract: An LED (light emitting diode) lamp includes a lamp body, a cap mounted on an end of the lamp body, a lamp holder mounted on an opposite end of the lamp body, and a plurality of fasteners. The lamp body includes two beams located at two opposite lateral sides thereof and a plurality of separated light emitting modules mounted on the beams side by side. Each of the fasteners extends through the lamp body, the light emitting modules and the cap in series to secure the lamp body, the light emitting modules, and the cap together.

Abstract: An LED lamp includes a heat sink including a supporting plate, a plurality of LEDs mounted on the supporting plate and a heat-conducting mounting wall extending upwardly from a top face of the supporting plate. The heat-conducting mounting wall has inclined outer faces oriented upwardly. The LEDs includes a plurality of first LEDs disposed on a bottom face of the supporting plate and a plurality of second LEDs disposed on the inclined outer faces of the heat-conducting mounting wall, whereby light generated from the second LEDs projects towards a lateral side of the LED lamp.

Abstract: An LED module includes a housing, a plurality of LED modules, a plurality of first and second reflectors, a heat sink attached to the housing and an envelope engaged with the housing and covering the LED modules, the first and second reflectors. The housing includes a base and four sidewalls extending upwardly from edges of the base. The LED modules are mounted on the base. The first reflectors are accommodated in the housing and each cover a corresponding LED module. The second reflectors are mounted on the base and each located at a lateral side of the corresponding LED module.

Abstract: An LED module comprises an LED having a first optical axis and a lens fixed over the LED for refracting light emitted from the LED. The lens comprises an emission surface having a second optical axis and an incidence surface having a third optical axis. The second optical axis of the emission surface offsets from the first optical axis of the LED in a first direction for increasing a light intensity at a side of the first optical axis in the first direction. The first, second and third optical axes are in a line along the first direction. The third optical axis offsets from the first optical axis of the LED at a side opposite to that of the second optical axis.

Abstract: An LED illumination module includes a base, a plurality of first LEDs disposed on a top side of the base and a reflecting barrel disposed on the top side of the base. The first LEDs are disposed outside of the reflecting barrel, whereby light generated by the first LEDs is reflected by the reflecting barrel to illuminate a space below a bottom side of the base.

Abstract: An LED unit includes an LED and a lens receiving the LED. The LED includes a chassis, a base on the chassis and an envelope fixed on the base. The lens has two crossed grooves, a hole and a chamber sequentially defined in a bottom face the lens, along an upward direction thereof. The chassis of the LED can be selected to fit in one of the two grooves. The base of the LED is engaged in the hole of the lens, and the envelope of the LED is received in the chamber of the lens.

Abstract: An LED unit includes an LED and a lens receiving the LED. The lens includes a first light-incident face confronting the LED to refract the light emitted from the LED with a small angle into the lens, a second light-incident face surrounding the LED to refract the light emitted from the LED with a large angle into the lens, a light-reflecting face to reflect the light from the second light-incident face towards a top of the LED, a first light-emergent face to refract the light from the first light-incident face out of the lens, and a second light-emergent face to refract the light from the light-reflecting face out of the lens.