Method for forming free-form surfaces of optical lenses of LED motorcycle headlamp
An optical lens and headlight technology, which is applied in the parts of lighting devices, light sources, motor vehicles, etc., to achieve the effect of solving the problem of excessive thickness and overcoming the optical design.
Active Publication Date: 2015-11-11
SOUTH CHINA UNIV OF TECH
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[0004] The present invention aims at the problems mentioned above, and provides LED headlights for motorcycles. Light distribution requirements, solve the optical design problem of using LED light source
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[0026] The present invention will be described in further detail below in conjunction with accompanying drawing and embodiment, it should be noted that accompanying drawing is only for exemplary illustration, can not be interpreted as the limitation of this patent; For those skilled in the art, some It is understandable that well-known structures and descriptions thereof may be omitted.
[0027] The method for forming the free-form surface of the optical lens used in the LED motorcycle headlamp provided by the present invention includes the method for forming the multi-segment free-form surface of the optical lens 1 for the high beam in the same headlamp and the low beam With the forming method of the multi-stage free-form surface of the optical lens 2, the optical lens 1 for the high beam light and the optical lens 2 for the low beam light are both plano-convex lenses, and the optical lens 1 for the high beam light and the optical lens 2 for the low beam light are all plano-co...
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The invention discloses a method for forming the free-form surfaces of optical lenses of an LED motorcycle headlamp. The method includes a multi-section type free-form surface forming method adopted in the optical lens of a high beam and a multi-section type free-form surface forming method adopted in the optical lens of a low beam, wherein the high beam and the low beam are arranged in the same headlamp. The optical lenses are similar to planoconvex lenses. The planes of the optical lenses are light incident planes and the multi-section type free-form surfaces of the optical lenses are light emergent planes. The optical lenses are located in front of a light reflector. Multiple-ring division is performed on an oval region with the center point of a lighting face as the center and a semicircular region, a free curve corresponding to the multi-section type free-form surface of each optical lens corresponding to a certain ring is calculated, the acquired free curves are then combined, and a free-form surface model is obtained through the acquired combined multi-section type free curves. Through the adoption of the method, the defects that the thickness of lenses is too large and optical efficiency is too low in the existing motorcycle lens lighting technology are overcome, and the method is simple, reliable, mature and feasible.
Description
technical field [0001] The invention relates to the technical field of LED motorcycle lamp lighting, in particular to a method for forming a free-form surface of an optical lens used in an LED motorcycle headlamp. Background technique [0002] With the continuous development of science and technology and the demand for complete vehicle configuration, there is a strong call in the automotive lighting industry to revise the requirements of GB5948-1998 "Light Distribution Performance of Motorcycle Incandescent Filament Light Source Headlamps". After the discussion and decision of the expert group, a mandatory national standard will be formulated. The name of the standard is tentatively designated as "light distribution performance of motor vehicle headlights emitting symmetrical low beam and / or high beam". After the standard is approved and issued, a transition period for implementation will be set , and gradually replace the current motorcycle headlight standard GB5948-1998 "l...
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IPC IPC(8): F21V5/04F21W101/027F21W101/10F21Y101/02F21W107/17
CPCF21V5/046F21W2102/00F21W2107/17
Inventor 王洪王翔葛鹏罗蝶
Owner SOUTH CHINA UNIV OF TECH