Method for determining long axis, short axis and inclination angle of color BIN one-step ellipse

A technology of ellipse major axis and inclination angle, applied in the determination of inclination angle, color bin one-step ellipse major axis, minor axis field, can solve problems such as troublesome production and operation

Pending Publication Date: 2021-10-22
DONGGUAN LEDESTAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0002] White light LEDs currently on the market use the MacAdam ellipse BIN method, but this method needs to know the parameters of g11, g12, and g22 by looking up the map, so as to calculate the major axis (a), minor axis (b) and inclination angle (θ) of the one-step ellipse , which will bring considerable trouble to our actual production and application

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  • Method for determining long axis, short axis and inclination angle of color BIN one-step ellipse
  • Method for determining long axis, short axis and inclination angle of color BIN one-step ellipse
  • Method for determining long axis, short axis and inclination angle of color BIN one-step ellipse

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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] Such as figure 1 As shown, a method for determining the major axis, minor axis, and inclination angle of a color BIN one-step ellipse is used to help packaging LED engineers quickly and effectively formulate LED white light binning standards, and at the same time provide a method fulcrum for LED color difference problems. The present invention proposes to use 1964CIE coordinates (u, v) and 1931CIE coordinates (x, y) to convert each other, and use mathem...

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Abstract

The invention discloses a method for determining a long axis, a short axis and an inclination angle of a color BIN one-step ellipse. The method is used for helping an LED packaging engineer to quickly and effectively formulate an LED white light bin division standard, and meanwhile, a method fulcrum is provided for the LED color difference problem. According to the method, a 1964 CIE coordinate (u, v) and a 1931 CIE coordinate (x, y) are mutually converted, mathematical thinking is adopted for modeling, and the long axis (a), the short axis (b) and the inclination angle (theta) of a color BIN one-step ellipse are calculated. According to the method, an LED packaging engineer can be helped to quickly and effectively formulate the LED white light bin division standard, and meanwhile, a method fulcrum is provided for the LED color difference problem.

Description

technical field [0001] The invention relates to the technical field of phosphor powder proportioning in LED packaging, in particular to a method for determining the major axis, minor axis and inclination angle of a color BIN one-step ellipse. Background technique [0002] White light LEDs currently on the market use the MacAdam ellipse BIN method, but this method needs to know the parameters of g11, g12, and g22 by looking up the map, so as to calculate the major axis (a), minor axis (b) and inclination angle (θ) of the one-step ellipse , which will bring considerable trouble to our actual production and application. Contents of the invention [0003] The purpose of the present invention is to provide a method for determining the major axis, minor axis, and inclination angle of a color BIN one-step ellipse. This method can obtain the above results through pure theoretical calculation of mathematical thinking, and is more simple and operable. It can help packaging LED engi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/15
CPCG06F17/15
Inventor 刘三林程鸣陈小燕陈会元肖瑞斌
Owner DONGGUAN LEDESTAR OPTOELECTRONICS TECH CO LTD
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