Abstract: A composite reflecting surface for a linear LED array incorporates a truncated circular parabolic reflector surrounding each LED and a trough axially above the circular parabolic reflectors defined between parallel longitudinal reflecting surfaces. The short circular parabolic reflectors collimate wide angle light from the LED into a direction parallel to the LED optical axis. The longitudinal reflecting surfaces are linear parabolic surfaces altered to improve the vertical spread of the light radiation pattern. Longitudinal convex ribs project inwardly from the basic linear parabolic shape. The convex shape of the ribs “sprays” the light incident upon it in a vertically spread pattern. The composite reflecting surface makes use of light from a linear array of LEDs that would otherwise be wasted.

Abstract: A light assembly is configured to produce a large area of light emission from an LED light source. The LED light source is mounted within a concave reflector and oriented to face the rear of the reflector. A compound reflecting surface diverts axial light from the LED away from the axis of the reflector to avoid blockage by the LED support structure. A peripheral reflecting surface redirects the diverted light. The LED light source may be a linear array of LEDs aligned with a linear focal axis of the reflector.

Abstract: A light assembly is configured to produce a large area of light emission from an LED light source. The LED light source is mounted within a concave reflector and oriented to face the rear of the reflector. A compound reflecting surface diverts axial light from the LED away from the axis of the reflector to avoid blockage by the LED support structure. A peripheral reflecting surface redirects the diverted light. The LED light source may be a linear array of LEDs aligned with a linear focal axis of the reflector.

Abstract: A method and apparatus are disclosed for redistributing light to shift the apparent position of light generation and provide a more uniform area of light emission from a light assembly incorporating a plurality of spaced-apart light sources. Divergent light from each light source is collimated into a beam. Portions of each beam are diverted from the direction of the beam, transmitted laterally and redirected to emerge from the light assembly radially spaced from the position of the light source producing the beam. An internal reflecting lens member molded from optical plastic is disclosed as one apparatus for carrying out the method. The disclosed method and apparatus are particularly applicable to light assemblies incorporating an array of LEDs.

Abstract: An light source utilizes a parabolic reflector to collimate light emitted from at greater than a predetermined angle relative to the optical axis of an LED arranged at the focus of the reflector. An optional collimating lens is arranged to collimate light emitted at less than the predetermined angle. Both variations provide light in the form of a substantially collimated beam. The parabolic reflector is preferably extended along its focal point to form a linear parabolic section having a linear focal axis. A linear array of LEDs is arranged such that the linear focal axis passes through the area of light emission of each LED. The linear parabolic section may be provided with parabolic dish ends. Alternatively, the ends of the parabolic section may be left open for increased wide angle visibility.

Abstract: An light source utilizes a parabolic reflector to collimate light emitted from at greater than a predetermined angle relative to the optical axis of an LED arranged at the focus of the reflector. An optional collimating lens is arranged to collimate light emitted at less than the predetermined angle. Both variations provide light in the form of a substantially collimated beam. The parabolic reflector is preferably extended along its focal point to form a linear parabolic section having a linear focal axis. A linear array of LEDs is arranged such that the linear focal axis passes through the area of light emission of each LED. The linear parabolic section may be provided with parabolic dish ends. Alternatively, the ends of the parabolic section may be left open for increased wide angle visibility.

Abstract: A convex lens for a warning light is provided with a plurality of prism-shaped prismatic elements projecting from the lens concave inner surface. The configuration and angular orientation of each prismatic element is selected to compensate for the curvature of the lens so that light refracted by each prismatic element emerges from the lens outer surface at substantially equivalent angles relative to an optical axis of the light. A preferred embodiment of the lens includes a matrix of prismatic elements that refract light incident on planar surfaces of the prismatic elements to an angle of 45° relative to an optical axis of the light. Each prismatic element also includes a convex radius at the convergence of the two refractive surfaces and concave radii at the junction of the planar surfaces with the inner surface of the lens. Light incident on these concave and convex surfaces is refracted along a range of angles to fill in the radiation pattern produced by the lens.