【摘 要】
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A flash of mobile devices is an optical component that can be used to make the photograph more clearly in the dark shooting conitions.The functions of flash
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A flash of mobile devices is an optical component that can be used to make the photograph more clearly in the dark shooting conitions.The functions of flash lens are that the optical efficiency and the illuminance uniformity are improved.However,under the requirements of miniaturization and lightweight,flash size and shape are subject to many restrictions of mobile devices.The emitting surface of the flash lens must also be flat.
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