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IES LM-79 Clause 9.1.2 requests the 4π geometry and 2π geometry configuration integrating sphere for the LED testing. LISUN developed the photometric integrating sphere with
June 19, 2025
IES LM-79 Clause 9.1.2 requests the 4π geometry and 2π geometry configuration integrating sphere for the LED testing. LISUN developed the photometric integrating sphere with
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