Abstract: A zoom optical system includes a plurality of lens groups, and upon zooming distances between adjacent lens groups change. The zoom optical system has a focusing lens group that moves upon focusing and an image-side lens group disposed adjacent to an image side of the focusing lens group. The zoom optical system satisfies the conditional expression 0.000<dL0t/dL1t<1.000, where dL0t denotes a distance on an optical axis between the focusing lens group and the image-side lens group upon focusing on an infinity object in a telephoto end state, and dL1t denotes a distance on the optical axis between the focusing lens group and the image-side lens group upon focusing on a short-distance object in the telephoto end state.

Abstract: A lightweight lens barrel that includes two focus lenses. The first lens holding frame for holding a first lens L5, a first drive unit STM5 for causing the first lens holding frame to move in the optical axis direction, a second lens holding frame for holding a second lens L6, and a second drive unit STM6 for causing the second lens holding frame to move in the optical axis direction, the first lens holding frame being arranged on an inner peripheral side of the second lens holding frame.

Abstract: A lightweight lens barrel with two focus lenses; a first lens holding frame for holding a first lens, a first drive unit for causing the first lens holding frame to move in the optical axis direction, a second lens holding frame for holding a second lens, a second drive unit for causing the second lens holding frame to move in the optical axis direction, and a moving tube with the first driving unit and the second driving unit, and movable in the optical axis direction, wherein the first lens holding frame and the second lens holding frame are each movable in the optical axis direction with respect to the moving tube.

Abstract: A lightweight lens barrel that includes two focus lenses. The first lens holding frame for holding a first lens L5, a first drive unit STM5 for causing the first lens holding frame to move in the optical axis direction, a second lens holding frame for holding a second lens L6, and a second drive unit STM6 for causing the second lens holding frame to move in the optical axis direction, the first lens holding frame being arranged on an inner peripheral side of the second lens holding frame.

Abstract: A lens barrel and an imaging device which can be miniaturized, the lens barrel with a movable cylinder that moves along the optical axis with a change in focal length; first and second drive units in the movable cylinder; and first and second lens driven by the first and second drive units respectively to move along the optical axis relative to the movable cylinder. The movement amount of the first lens relative to the cylinder when the focal length is changed to a second focal length from a first state where the first lens is at a position closest to a subject with a first focal length is less than the movement amount of the first lens relative to the cylinder when the focal length is changed to the second focal length from a second state where the first lens is closer to an image plane than the first state.

Abstract: A zoom optical system (ZL) comprises a plurality of lens groups (G1-G7), and upon zooming distances between adjacent lens groups change. The zoom optical system comprises a focusing lens group (G5,G6) that moves upon focusing and an image-side lens group ((G7) disposed adjacent to an image side of the focusing lens group. The zoom optical system satisfies a following conditional expression. 0.000<dL0t/dL1t<1.000 where dL0t: a distance on an optical axis between the focusing lens group and the image-side lens group upon focusing on an infinity object in a telephoto end state, and dL1t: a distance on the optical axis between the focusing lens group and the image-side lens group upon focusing on a short-distance object in the telephoto end state.

Abstract: A lightweight lens barrel that includes two focus lenses. The first lens holding frame for holding a first lens L5, a first drive unit STM5 for causing the first lens holding frame to move in the optical axis direction, a second lens holding frame for holding a second lens L6, and a second drive unit STM6 for causing the second lens holding frame to move in the optical axis direction, the first lens holding frame being arranged on an inner peripheral side of the second lens holding frame.

Abstract: A lightweight lens barrel with two focus lenses; a first lens holding frame for holding a first lens, a first drive unit for causing the first lens holding frame to move in the optical axis direction, a second lens holding frame for holding a second lens, a second drive unit for causing the second lens holding frame to move in the optical axis direction, and a moving tube with the first driving unit and the second driving unit, and movable in the optical axis direction, wherein the first lens holding frame and the second lens holding frame are each movable in the optical axis direction with respect to the moving tube.

Abstract: Executing a desired processing immediately by a simple operation using a jog dial for example. The display unit (3) has a jog dial (4) (a first operating means) and a back button (5) (second operating means) provided vertically at the right upper corner thereof. The jog dial (4) can be rotated and pushed. The back button (5) is to undo an operation having been made by pushing the jog dial (4), and it is located near the jog dial (5).

Abstract: An information processing device comprises a main body, a display part provided so as to be turned with respect to the main body, and a handle that is provided so as to be turned with respect to the main body on the same axis line as the turning shaft of the display part and is composed of vertical parts that are vertical to the turning shaft and a hold part connected to the vertical parts and arranged side by side at a specified distance from the turning shaft. When the main body is placed, the handle is turned to the main body side, so that the hold part is positioned under the bottom surface of the main body to incline the main body.

Abstract: Executing a desired processing immediately by a simple operation using a jog dial for example. The display unit (3) has a jog dial (4) (a first operating means) and a back button (5) (second operating means) provided vertically at the right upper corner thereof. The jog dial (4) can be rotated and pushed. The back button (5) is to undo an operation having been made by pushing the jog dial (4), and it is located near the jog dial (5).

Abstract: An information processing device comprises a main body, a display part provided so as to be turned with respect to the main body, and a handle that is provided so as to be turned with respect to the main body on the same axis line as the turning shaft of the display part and is composed of vertical parts that are vertical to the turning shaft and a hold part connected to the vertical parts and arranged side by side at a specified distance from the turning shaft. When the main body is placed, the handle is turned to the main body side, so that the hold part is positioned under the bottom surface of the main body to incline the main body.

Abstract: A cooling assisting device which is connected to an information processor for assisting the cooling of the inside of the information processor. The cooling assisting device includes an executing member, typically, a docking connector for executing communication with the information processor; a sucking member, typically, an air inlet for sucking a specific gas; and a supplying member, typically, an air outlet for supplying the gas sucked by the sucking means to the information processor.