Optical unit for LED illuminance
A technology of LED lighting and optical unit, which is applied to the components of lighting devices, outdoor lighting, lighting devices, etc., can solve the problems of uneven distribution of illumination, weak light intensity in the middle, and small effective irradiation range, etc., and is conducive to popularization Application, high light transmittance, good lighting effect
Inactive Publication Date: 2009-08-19
史杰
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Problems solved by technology
[0004] Because the LED light source is a point light source, the current LED road lighting fixtures have a small effective irradiation range and uneven illumination distribution. Now some lamps on the market use reflective cups to reflect and diffuse the light emitted by the LED light source, which can effectively expand the illumination. area, and can direct the light emitted by the LED light source to the required area, but the illuminance distribution is uneven, the middle light intensity is weak at the edge, and the dark area between the two lights is obvious
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[0025] like Figure 1 to Figure 8 As shown, optical grade PMMA or optical grade PC light-transmitting material is used to manufacture and shape the optical unit for LED lighting. A pit is set in the middle of the bottom surface 6 of a light-transmitting material body, and the pit wall of the pit is the light incident surface 4, which is an inner concave curved surface and is composed of more than one free curved surface. The top surface of the light-transmitting material body corresponding to the periphery of the light incident surface 4 is the light exit surface 1, which is a convex curved surface composed of more than two free curved surfaces, and the smooth connections and transitions between the curved surfaces. Both the light incident surface 4 and the light exit surface 1 are polished smooth surfaces. The positioning wall 3 for installing and positioning the LED light source 7 is set on the bottom surface 6 around the pit. The wall of the positioning wall 3 correspondin...
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The invention discloses an optical unit applied to LED illumination, belonging to the technical field of semiconductor illumination. A recess is arranged at the middle of the bottom surface of a transparent material body, walls of the recess form into a light-incoming face, the top surface corresponding to the transparent material body at the periphery of the light-incoming face is a light-exiting face, the bottom surface around the recess is provided with a positioning wall that positions an LED light source, two ends near the bottom surface of the positioning wall are provided with lug bosses on which positioning posts are arranged. An optical portion of the optical unit composed of the bottom surface, the light-incoming face and the light-exiting face and a mounting portion of the optical unit composed of the positioning walls, the lug bosses and the positioning posts constitute the optical unit body jointly. The optical unit is reasonable, scientific and simple in structure and easy in production and manufacturing. By utilizing the optical unit to implement a secondary light distribution on dispersed lights emitted from the LED light source, the light-exiting efficiency of the LED is efficiently promoted and the optical system for light field distribution of the LED is varied so that illuminance in road illumination areas are distributed uniformly and the illumination effect is superior.
Description
technical field [0001] The invention discloses an optical unit applied to LED lighting, which belongs to the technical field of semiconductor lighting and is mainly used in the field of road lighting. Background technique [0002] In recent years, with the rapid development of the lighting technology industry, semiconductor lighting (LED) is being widely used in various fields of the lighting industry due to its advantages such as high brightness, low energy consumption, long service life, and environmental protection. [0003] Road lighting occupies a large proportion in the lighting industry, and consumes a huge amount of electricity every year. The promotion of semiconductor lighting (LED) as an energy-saving product seems to be imminent. The energy-saving potential is huge. Most manufacturers around the world are actively developing and promoting it. Currently, there are A variety of LED road lighting fixtures have appeared. [0004] Because the LED light source is a po...
Claims
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Login to View More IPC IPC(8): F21V5/00F21V5/04H01L33/00F21W131/103F21Y101/02F21Y115/10
Inventor 史杰
Owner 史杰