Abstract: A zoom lens device has a zoom lens system having a plurality of lens units; and an image sensor converting an optical image formed by the zoom lens system, into electric image data. The zoom lens system has a first lens unit disposed on the most object side and consisting of a single negative lens element, a second lens unit having a positive optical power; and a diaphragm disposed on the object or the image side of the second lens unit, or in the second lens unit. Zooming is performed by varying the distances between the lens units. Focus adjustment by varying the object distance is performed by moving along the optical axis a positive lens unit or a single lens element disposed in a position on the image side of the diaphragm and not included in the most image side lens unit.

Abstract: An imaging device has a zoom lens system having a plurality of lens units and forming an optical image of an object so as to continuously optically zoom by varying distances between the lens unit; and an image sensor converting the optical image formed by the zoom lens system to an electric signal. The zoom lens system comprises, from an object side. A first lens unit being overall negative and including a reflecting surface that bends a luminous flux substantially 90 degrees; and a second lens unit disposed with a variable air distance from the first lens unit, and having a negative optical power.

Abstract: A zoom lens device has a zoom lens system having a plurality of lens units; and an image sensor converting an optical image formed by the zoom lens system, into electric image data. Lens surfaces constituting the zoom lens system are all refracting surfaces. Zooming is performed by varying the distances between the lens units.

Abstract: A zoom lens device has a zoom lens system having a plurality of lens units; and an image sensor converting an optical image formed by the zoom lens system, into electric image data. The zoom lens system has a first lens unit disposed on the most object side and consisting of a single negative lens element, a second lens unit having a positive optical power; and a diaphragm disposed on the object or the image side of the second lens unit, or in the second lens unit. Zooming is performed by varying the distances between the lens units. Focus adjustment by varying the object distance is performed by moving along the optical axis a positive lens unit or a single lens element disposed in a position on the image side of the diaphragm and not included in the most image side lens unit.

Abstract: A zoom lens device has a zoom lens system having a plurality of lens units; and an image sensor converting an optical image formed by the zoom lens system, into electric image data. The zoom lens system has, from the object side, a first lens unit disposed on the most object side and consisting of one negative lens element; and a second lens unit being overall positive power and including a positive lens element and a negative lens element independent of each other. Lens surfaces constituting the zoom lens system are all refracting surfaces. Zooming is performed by varying the distances between the lens units. The predetermined conditions are satisfied by the zoom lens system.

Abstract: An imaging device has a zoom lens system comprising a plurality of lens units and forming an optical image of an object so as to be continuously and optically zoomable by varying a distance between the lens units; and an image sensing element converting the optical image formed by the zoom lens system into an electric signal, wherein the zoom lens system comprises from the object side: a first lens unit having positive optical power as a whole and including a reflecting surface that bends a luminous flux substantially 90 degrees; a second lens unit having negative optical power and disposed with a variable air space from the first lens unit; a third lens unit having positive optical power and disposed with a variable air space from the second lens unit; a fourth lens unit having positive optical power and disposed with a variable air space from the third lens unit; and a fifth lens unit disposed with a variable air space from the fourth lens unit, and wherein zooming is optically performed by varying the air

Abstract: An imaging device has a zoom lens system having a plurality of lens units and forming an optical image of an object so as to continuously optically zoom by varying distances between the lens unit; and an image sensor converting the optical image formed by the zoom lens system to an electric signal. The zoom lens system has from an object side, a first lens unit being overall negative and including a reflecting surface that bends a luminous flux substantially 90 degrees; and a second lens unit disposed with a variable air distance from the first lens unit, and having an optical power, and wherein at least one lens element made of resin is included in the entire lens system.

Abstract: An imaging device has a zoom lens system having a plurality of lens units and forming an optical image of an object so as to continuously optically zoom by varying distances between the lens unit; and an image sensor converting the optical image formed by the zoom lens system to an electric signal. The zoom lens system comprises, from an object side a first lens unit being overall negative and including a reflecting surface that bends a luminous flux substantially 90 degrees; and a second lens unit disposed with a variable air distance from the first lens unit, and having a negative optical power.

Abstract: An imaging device has a zoom lens system having a plurality of lens units and forming an optical image of an object so as to continuously optically zoom by varying distances between the lens unit; and an image sensor converting the optical image formed by the zoom lens system to an electric signal. The zoom lens system has from an object side: a first lens unit being overall negative and including a reflecting surface that bends a luminous flux substantially 90 degrees; and a second lens unit disposed with a variable air distance from the first lens unit, and having a negative optical power.

Abstract: An imaging device has a zoom lens system having a plurality of lens units and forming an optical image of an object so as to continuously optically zoom by varying distances between the lens unit; and an image sensor converting the optical image formed by the zoom lens system to an electric signal. The zoom lens system has from an object side, a first lens unit being overall negative and including a reflecting surface that bends a luminous flux substantially 90 degrees; and a second lens unit disposed with a variable air distance from the first lens unit, and having an optical power, and wherein at least one lens element made of resin is included in the entire lens system.

Abstract: An imaging device has a zoom lens system comprising a plurality of lens units and forming an optical image of an object so as to be continuously and optically zoomable by varying a distance between the lens units; and an image sensing element converting the optical image formed by the zoom lens system into an electric signal, wherein the zoom lens system comprises from the object side: a first lens unit having positive optical power as a whole and including a reflecting surface that bends a luminous flux substantially 90 degrees; a second lens unit having negative optical power and disposed with a variable air space from the first lens unit; a third lens unit having positive optical power and disposed with a variable air space from the second lens unit; a fourth lens unit having positive optical power and disposed with a variable air space from the third lens unit; and a fifth lens unit disposed with a variable air space from the fourth lens unit, and wherein zooming is optically performed by varying the air

Abstract: A zoom lens system has, from the object side, a first lens unit, a second lens unit and a third lens unit. The first lens unit has a negative optical power as a whole. The second and third lens units have a positive optical power as a whole. In the zoom lens system, zooming is achieved by varying the distance between the first and second lens units, and at least one of the lens elements is a plastic lens element.

Abstract: A zoom lens system has, from the object side, a first lens unit, a second lens unit and a third lens unit. The first lens unit has a negative optical power as a whole. The second and third lens units have a positive optical power as a whole. In the zoom lens system, zooming is achieved by varying the distance between the first and second lens units, and at least one of the lens elements is a plastic lens element.

Abstract: A zoom lens system has, from the object side, a first lens unit, a second lens unit and a third lens unit. The first lens unit has a negative optical power as a whole. The second and third lens units have a positive optical power as a whole. In the zoom lens system, zooming is achieved by varying the distance between the first and second lens units, and at least one of the lens elements is a plastic lens element.

Abstract: A zoom lens system has, from the object side, a first lens unit, a second lens unit and a third lens unit. The first lens unit has a negative optical power as a whole. The second and third lens units have a positive optical power as a whole. In the zoom lens system, zooming is achieved by varying the distance between the first and second lens units, and at least one of the lens elements is a plastic lens element.