Its characteristic is that the goggles immediately turn dark from light state after arc-starting- When arclight disappears the goggles will turn to be light automatically.

其特点是护目镜随弧光的开启自动变暗，而随弧光的停止又自动变亮；

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This past weekend I took my kids to see Despicable Me at the Arclight in Sherman Oaks, California.

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The other reason has to do with the status of theatrical exhibitors as the weakest link in the 3-D process. (Some theaters have already been caught reducing light levels on the screen to extend the life of expensive projector lamps.) What happened to me and others at the ArcLight the other night was the height of absurdity.

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