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Manufacturing method for Lens with Micro-Patterned Complex Surface having double curvature, Lens with Micro-Patterned Complex Surface having double curvature manufactured by the same and LED device comprising the Lens with Micro-Patterned Complex Surface having double curvature
Manufacturing method for Lens with Micro-Patterned Complex Surface having double curvature, Lens with Micro-Patterned Complex Surface having double curvature manufactured by the same and LED device comprising the Lens with Micro-Patterned Complex Surface having double curvature
invention fine complex shape lens manufacturing method and thereby producing a fine complex shape of the lens in such, After the fine complex shape lens manufacturing method according to the present invention is laminated with a photoresist layer on a substrate, patterned to form an array of fine complex patterns; Applying a thin film containing a material having elasticity on the fine pattern arrays, laminating; The one surface of the elastic layer having a cavity of a predetermined size therein and contacting the thin film layer, coupling step; By lowering the air pressure in the cavity, applying a negative pressure in the cavity wherein the thin film layer to enter the inner cavity; Forming a lens on the thin film layer by filling a filler; And comprising the step of separating the lens from the thin film layer, where the cavity portion being provided with a spherical portion having a predetermined height on the opposing face opposing to the thin film layer, and larger than the light emitted by each of the fine complex patterns it may be formed, that the optical uniformity of the light source, the LED light source can be converted into the superior surface light source and, also, a single light guide plate without complex lens as one layer of the optical substrate used in the conventional backlight unit, the prism diffuser plate and the role has the advantage that can be substituted. Further, in Fig. 90 can be increased more and 160 near the discharge angle of the LED light source, the effect of improving the uniformity and emission angle of the light source of the light amount through the local change of a fine pattern with minimal mixing techniques and tenant, 3 dimensional molding technology and wafer-level fabrication is possible by using a microfluidic array tube. In addition, the large number of the LED light emission can be reduced through a single lens having an angle, it is possible to reduce the production cost, can reduce the heat generated from the LED. Furthermore, a double curved structure of the fine complex shape lens according to the present invention is not only to improve the optical uniformity, it is possible to improve the light emission angle than a single surface structure.
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