Methods for producing phosphor based light sources
Assignee3M Innovative Properties Company
InventorsCraig R. Schardt, John A. Wheatley, Michael A. Meis
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Abstract
Methods for producing phosphor based light sources are disclosed. One method includes measuring an excitation light output of an LED, forming a plurality of phosphor film articles, measuring an optical characteristic of each of the plurality of phosphor film articles, selecting one of the plurality of phosphor film articles based on the LED excitation light output and measured optical characteristic of the one of the plurality of phosphor film articles to obtain a desired emission light output from the phosphor film article when the phosphor film article is positioned to receive the excitation light, and positioning the phosphor film article to receive the excitation light.
Claims25
A method comprising step of:
- measuring an excitation light output of an LED;
- forming a plurality of phosphor film articles comprising a phosphor layer disposed on a flexible polymeric film;
- measuring an optical characteristic of each of the plurality of phosphor film articles;
- selecting one of the plurality of phosphor film articles based on the LED excitation light output and measured optical characteristic of the one of the plurality of phosphor film articles to obtain a desired emission light output from the phosphor film article when the phosphor film article is positioned to receive the excitation light;
- and
- positioning the phosphor film article to receive the excitation light.
A method comprising step of:
- providing a plurality of LEDs;
- measuring an excitation light output of each of the plurality of LEDs;
- sorting each of the plurality of LEDs based on the excitation light output of each of the plurality of LEDs to form one or more groups of LEDs, each group of LEDs having substantially similar excitation light output;
- selecting an LED from a group of LEDs having substantially similar excitation light output;
- forming a plurality of phosphor film articles comprising a phosphor layer disposed on a polymeric film;
- measuring an optical characteristic of each of the plurality of phosphor film articles;
- selecting one of the plurality of phosphor film articles based on the selected LED excitation light output and measured optical characteristic of the one of the plurality of phosphor film articles to obtain a desired emission light output from the phosphor film article when the phosphor film article is positioned to receive the excitation light from the selected LED;
- and
- positioning the phosphor film article to receive the excitation light from the selected LED.
Dependencies are inferred from the claim text.