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US 8,553,136 B2Granted
Camera system
AssigneeOlympus Imaging Corp.
InventorsMitsuru Toyama, Takeshi Ito, Tamotsu Koiwai
Life of this patent
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AssigneeOlympus Imaging Corp.
InventorsMitsuru Toyama, Takeshi Ito, Tamotsu Koiwai
Estimating the term…
A camera system of this invention includes: a fixed member; a focusing lens; a drive portion that drives the focusing lens; a rotational member to be engaged; an operation ring that can be positioned at a first position and a second position in the optical axis direction; an engagement portion that, when the operation ring is at the second position, causes the rotational member to be engaged and the operation ring to engage with each other; and a control portion that, when the operation ring is at the first position and the operation ring is rotated, drives the focusing lens in accordance with the rotation, and when the operation ring is at the second position, drives the focusing lens in accordance with a relative movement position between the rotational member to be engaged and the fixed member.
A camera system, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Power focusing: autofocus systems
With mechanism for focusing or varying magnification: adapted to co-operate with a remote control mechanism
For lenses: adjusting pupillary distance of binocular pairs
Focusing arrangements of general interest for cameras, projectors or printers: power-operated focusing
About 5 years 6 months of term left · ends 18 Apr 2032 (estimated)
1. Field of the Invention
The present invention relates to a camera system in which an autofocus operation is possible.
2. Description of the Related Art
FIG. 1 is a perspective view showing a front face side of a camera constituting a camera system.
FIG. 2 is a top face view of a lens barrel in a state where an operation ring is positioned at a first position.
FIG. 3 is a top face view of the lens barrel in a state where the operation ring is positioned at a second position.
Preferred embodiments of the present invention are described hereunder with reference to the drawings. It should be noted that each of the components in the drawings referred to in the following description is displayed in a different contraction scale so as to be shown in a size that is recognizable in the drawings. Further, the present invention is not limited to only the quantity of components, the shapes of components, the ratios between the sizes of components, and the relative positional relationship between the respective components described in the drawings.
As shown in FIG. 1, a camera system 1 of the present embodiment includes a camera body 2 and a lens barrel 10 as an interchangeable lens. The lens barrel 10 holds an optical system member 11 for forming an object image. As one example according to the present embodiment, the camera system 1 has a form in which the camera body 2 and the lens barrel 10 can be detachably attached to each other. Note that the camera system 1 may also have a form in which the camera body and the lens barrel are integrated.
Further, as one example according to the present embodiment, the camera system 1 has a configuration referred to as a so-called “electronic camera” or “digital camera” or the like, in which an image pickup device 9 is provided in the camera body 2 and which electronically picks up an object image and records the image. The image pickup device 9 outputs, at a predetermined timing, an electrical signal in accordance with light incident on a light-receiving surface (pixel region). For example, the image pickup device 9 has the form of a charge coupled device (CCD), a CMOS (complementary metal-oxide semiconductor) sensor or the like.