Structure of optical film which can adjust the focusing position of the light incident from the light source through the optical structure under the substrate layer and increase the luminous flux and luminance of the light source passing through the optical film by adjusting the focusing position
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Patent
Welding auxiliary device
YAN JIAQI, ZHANG WENQIANG, LIU KUNMING, HU SIYU, ZHU ZIKAI, CHEN ZHIBIN, SONG ZONGREN, YU LINGZI, QU HONGBIN, PI TE, LAI YANXI, JIANG ZONGJIAN, GAO JINTAO
Year of Publication 28.01.2022
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Year of Publication 28.01.2022
Patent