Optical element of lightening device

Abstract

The present invention relates to an optical element of a lightening device, which is matched with a solid luminous element to form the lightening device. The optical element of a lightening device comprises a light-out surface (a front-side optical surface) and a light-in surface (a light source side optical surface), wherein the light-out surface is a curved surface of sphere or non sphere; a V-shaped groove formed by two symmetrical or non-symmetrical surfaces or a groove similar to a V shape formed by a plurality of sections of straight lines or curve lines, or paraboloid , ellipsoid or the curved surface of non sphere are arranged on the light-in surface; light shafts of the light-in surface and the light surface are superposable, correspondingly offset, correspondingly inclined, or combined by the above; when the optical element is matched to at least one solid luminous element to be used, a non-symmetrical bat fin can be generated. The present invention is characterized in that the largest light strength is not at the light shape of a zero point to enable luminous degree at a luminous zone even, and the usage of light can be increased by the design of the V-shaped groove or the groove similar to the V shape of the light-in surface.

Description

technical field [0001] The present invention relates to an optical element of an illuminating device, especially one that can produce an asymmetrical batwing light shape, and its light incident surface is provided with a V-shaped groove formed by two symmetrical or asymmetrical slopes or The optical element of the V-shaped groove formed by the combination of multiple curves. Background technique [0002] Solid State Lighting (Solid State Lighting) components have been widely used as light sources for lighting devices, and their applications include flashlights, table lamps, car lights such as headlights and taillights, road lighting, or auxiliary lighting devices for other electronic products Wait. In terms of the application of solid-state light-emitting elements, taking road lighting fixtures as an example, most solid-state lighting fixtures on the market currently use symmetrical collimating optical elements or no optical elements, which will cause uneven illuminance dis...

AI Technical Summary

Problems solved by technology

[0003] For the design of the first optical element and / or the second optical element of the above-mentioned solid-state lighting, there have been many prior art disclosures related technologies, such as: China Taiwan Patent Certificate No. 262604 and Publication No. 2004028899 respectively disclose the design of the optical element The structure of the light incident surface (light source side optical surface) and / or light exit surface (front side optical surface) is designed to guide the incident light to a predetermined light exit direction, but when the incident light is guided to a large exit angle, the designed The optical surfaces of the components are all free-form surfaces and cannot be designed by computer calculation, which is not conducive to the production of optical component molding dies; Publication No. 200507293 discloses a structural design of an optical component composed of a plurality of optical component parts with different curvatures. The incident light is guided to the side of the optical element, but it must be packaged twice, and the size of the optical element limits the size of the solid-state light-emitting element; US Publication No. US2005 / 0243570 discloses that the light incident surface and the light exit surface of the optical element are symmetrical and special Structural design composed of shapes US6,940,660 reveals that the light incident surface of the optical element is composed of a plurality of confocally disposed annular reflector surrounding said central region (a plurality of confocally disposed annular reflector surrounding said central region) to guide the incident light To nearly parallel to the forward light direction; US6,940,660 discloses that the light output surface of the optical element is designed with a sawtooth optical portion (a sawtooth optical portion) to guide most of the incident light to the side of the optical element

Images