Automatic focal point regulation process in filming apparatus

Automatic focal point regulation process in filming apparatus

  • CN 101,666,957 B
  • Filed: 09/01/2009
  • Issued: 09/28/2016
  • Est. Priority Date: 09/01/2008
  • Status: Active Grant
First Claim
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1. the automatic focal point regulation process in filming apparatus, this filming apparatus is arranged in be installed electronic unit to substrateOn electronic component mounting apparatus, make focal position move along optical axis direction and focus on object identifying, and it is clappedTake the photograph,It is characterized in that,Described focal position is made to move along optical axis direction, under lower than the lower limit of the height fluctuation of camera site set in advanceLimit focal position and than in the height fluctuation of described camera site limit for height upper limit focal position constitute coarse scanning in the range of, enterRow coarse scanning action, to identifying that object shoots at described upper limit focal position and described lower limit focal position, it is thus achieved thatThe data representing focal position at described upper limit focal position and described lower limit focal position, based on this expression focal positionData, calculate focal position.

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