Apparatus and method for evaluating optical properties of LED and method for manufacturing LED device

摘要

An optical property evaluation apparatus includes: a light conversion filter converting light emitted from an LED chip or a bare LED package, which is to be evaluated, into a different wavelength of light, and emitting a specific color of light; and an optical property measurement unit receiving the specific color of light emitted from the light conversion filter and measuring the optical properties of the received light.

主权项

1. A method for manufacturing an LED device, comprising:
measuring at least one optical property of a specific color of light obtained by converting light emitted from each respective LED chip of a plurality of LED chips through one same light conversion filter of an optical evaluation apparatus; classifying each respective LED chip of the plurality of LED chips into a plurality of ranks depending on the at least one measured optical property of the specific color of light emitted from the light conversion filter when illuminated by the respective LED chip; and calculating a mixing ratio of phosphor-containing resin corresponding to the LED chips classified into a same rank of the plurality of ranks, based on a preset correlation between the at least one optical property of the specific color of light emitted from the light conversion filter when illuminated by the LED chips classified into the same rank and an optical property of a typical LED device emitting the specific color of light, wherein the light conversion filter is housed in the optical evaluation apparatus and includes a phosphor.