Zoom lens and electronic imaging device having the same

Details Zoom lens and electronic imaging device having the same Zoom lens and electronic imaging device having the same

2007-04-09

2009-02-03

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S689000

Reexamination Certificate

active

07486446

ABSTRACT:
A zoom lens includes a most object-side lens unit remaining fixed on the optical axis when the magnification of the zoom lens is changed and a focusing operation is performed; a most image-side lens unit remaining fixed when the focusing operation is performed; and a plurality of moving lens units lying between the most object-side lens unit and the most image-side lens unit, moved along the optical axis when the magnification is changed. The most object-side lens unit includes, in order from the object side, a negative lens component, a reflective optical component having a reflecting surface for bending the optical path, and a positive lens component. The most image-side lens unit has at least one aspherical surface. An electronic imaging device includes an electronic image sensor located on the image side of the zoom lens.

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