79results about How to "Achieve irradiation" patented technology

The invention relates to a lens system which is applicable to an LED street lamp and is matched with an LED illuminant for use to form light distribution with multiple Light beam angles and light intensities. A plane of light incidence of a lens in the system being close to the LED illuminant is a compound curved surface of an aspherical concave surface, and a light-emitting surface is a compoundcurved surface of an aspherical convex surface; the shapes of the incident surface and the emitting surface are determined by the luminescent properties of the LED illuminant and the requirement of the emergent ray; after the light ray emitted by the LED illuminant is refracted by the lens, facula formed on the irradiation surface within a certain distance has the characteristics of being comparatively long in the distance covered by the facula along one direction being vertical to the axes of the LED illuminant, being comparatively shorter in the distance covered by the facula along another direction being vertical to the direction, being symmetrical in the shapes of the faculas correspondingly to the axes of the LED illuminant, and taking on the distribution which is similar to rectangle. Similar plane isolux distribution curve shape as well as completely different maximum light intensity values of the light beam and half peak value light intensity light beam wrap angles can be obtained by the LED illuminant through different lenses, so that the lens system is especially suitable for the LED light fittings having the requirement of rectangle illumination scope.

The invention relates to an automobile lamp LED high-low beam integrated PES unit with an ADB function. A high-beam LED circuit board small assembly, a low-beam LED circuit board small assembly and a reflector are arranged in an optical module. A condenser is fixedly arranged right in front of the high-beam LED circuit board small assembly. When the low-beam LED circuit board small assembly works, light rays are reflected to a second focus by the reflector; most light rays are directly emitted into a lens, and small part of the light rays are refracted to enter the condenser and are then subjected to total reflection and refraction again on the front end face and the lower surface of the condenser correspondingly, so that the small part of the light rays do not enter the lens; thus a shading function is achieved, and in this way, the light emitted from the lens can form a low beam shape with a cut-off line. When the high-beam LED circuit board small assembly works, after being focused at the second focus by the condenser, part of light rays are directly emitted and then emitted into the lens; part of the light rays are subjected to total reflection when meeting the upper surface of the condenser, are emitted from the front end face of the condenser, and then emitted out after being emitted into the lens; thus a high-beam function is achieved.