Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2007-12-04
2008-12-09
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S684000, C359S685000, C359S686000, C359S687000, C359S688000, C359S689000, C359S690000, C359S713000, C359S714000, C359S715000, C359S716000, C359S726000, C359S737000
Reexamination Certificate
active
07463426
ABSTRACT:
An image pickup apparatus includes an image pickup element and an optical system configured to form an image on the image pickup element. The optical system includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power and including a reflecting member configured to deflect an optical axis, and a rear lens unit having a positive refractive power and including at least one lens unit having a positive refractive power. The second lens unit is stationary for zooming. During zooming, the image pickup element moves, and an interval between the first lens unit and the second lens unit and an interval between the second lens unit and the rear lens unit vary.
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Canon Kabushiki Kaisha
Canon USA Inc IP Div
Lester Evelyn A.
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