Miniature zoom lens
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United States of America Patent
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Dec 10, 2013
Grant Date -
Dec 8, 2011
app pub date -
Jun 10, 2011
filing date -
Dec 12, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A Miniature zoom lens, in particular for use in mobile telephones, in which the zoom lens, as viewed from the object plane, has the following in the stated sequence: at least one negative first optical lens group, at least one negative second optical lens group, at least one positive third optical lens group, and at least one positive fourth optical lens group. The second, third, and fourth optical lens groups are configured in such a way that focusing is achieved solely by displacement of the fourth optical lens group, and during the focusing the positions of the second and third lens groups remain unchanged.
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