| CPC B42D 25/36 (2014.10) [B42D 25/29 (2014.10); B42D 25/305 (2014.10); B42D 25/355 (2014.10); B42D 25/45 (2014.10); F21V 23/005 (2013.01); G02B 6/0005 (2013.01); G02B 6/0031 (2013.01); G02B 6/005 (2013.01); G02B 6/0055 (2013.01); H01L 25/165 (2013.01); H01L 25/167 (2013.01); H02N 2/0085 (2013.01); H02N 2/18 (2013.01); H02N 2/181 (2013.01); H10N 30/30 (2023.02); F21Y 2115/10 (2016.08); G02B 6/4274 (2013.01); H10N 30/50 (2023.02)] | 19 Claims |

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1. A piezo-electric device, comprising:
a piezo-electric power source for converting mechanical pressure into electrical power;
a control circuit electrically connected to the piezo-electric power source;
an output device electrically connected and responsive to the control circuit to output energy, wherein the control circuit controls the output device to output energy for a temporal output duration and the temporal output duration is temporally delayed from a press duration by a temporal delay of at least one msec, wherein the press duration is a duration during which mechanical pressure is applied to the piezo-electric power source.
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