Methods, systems, and apparatus for end of line testing

A method for light source testing, the method comprising:

• providing a testing box capable of accommodating a light source;
• measuring chromaticity of a test light source in an integrating sphere;
• generating a color boundary for the measured chromaticity of the test light source in the integrating sphere, the color boundary defining a first quadrangle of chromaticity coordinates;
• measuring chromaticity of the test light source in the testing box;
• defining a second quadrangle of chromaticity coordinates by shifting the color boundary based on a correlation between the measured chromaticities of the test light source in the integrating sphere and the testing box;
• obtaining a chromaticity measurement of the light source in the testing box, the chromaticity measurement comprising a first value in a first dimension and a second value in a second dimension;
• and
• passing or failing the light source based on whether the first value in the first dimension and the second value in the second dimension define a point in the second quadrangle.

A method comprising the steps of:

• obtaining a first color measurement of a test lamp using an integrating sphere;
• obtaining a second color measurement of the test lamp using a light box;
• generating, from the first color measurement, a first quadrangle that defines a first range of chromaticity coordinates;
• generating a second quadrangle that defines a second range of chromaticity coordinates and that is shifted from the first quadrangle according to a vector difference between the first color measurement and the second color measurement;
• obtaining a third color measurement of another lamp using the light box;
• and
• passing or failing the another lamp based on whether the third color measurement is within the second quadrangle.