摘要:
A zoom lens includes, in order from an object side to an image side, a first lens unit of a negative refractive power, a second lens unit of a positive refractive power, and a third lens unit of a positive refractive power, each lens unit being moved during zooming, wherein the second lens unit includes two positive lenses, a negative lens, a positive lens in order from the object side to the image side, and an average refractive index Nd2p for d-line of materials of the positive lenses in the second lens unit and a refractive index Nd2n for d-line of a material of the negative lens in the second lens unit are appropriately set.
摘要:
A zoom lens includes, in order from an object side to an image side, a first lens unit of a negative refractive power, a second lens unit of a positive refractive power, and a third lens unit of a positive refractive power, each lens unit being moved during zooming, wherein the second lens unit includes two positive lenses, a negative lens, a positive lens in order from the object side to the image side, and an average refractive index Nd2p for d-line of materials of the positive lenses in the second lens unit and a refractive index Nd2n for d-line of a material of the negative lens in the second lens unit are appropriately set.
摘要:
In a medical-image observation apparatus, an image display-area display-control unit causes a display unit to display a main examination area for displaying a thumbnail of a medical image to be read, and an observation-image preparation area for displaying a thumbnail of a medical image selected as a medical image to be used for comparative image reading. After a reading-subject image display-control unit causes the display unit to display a thumbnail of a medical image to be read in the main examination area, upon receiving an operation of moving the medical image of which thumbnail is displayed in the main examination area into the observation-image preparation area, a comparison-subject image display-control unit specifies a medical image to be a comparison subject based on attribution information about the moved medical image, and causes the display unit to display a thumbnail of the specified medical image.
摘要:
A zoom lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power. The first to fourth lens units are arranged in order from the object side to the image side. All of the lens units are moved during zooming from the wide-angle end to the telephoto end. In the zoom lens, a number of lenses in each of the lens units, imaging magnifications on the telephoto end and the wide-angle end of the second lens unit and the third lens unit, a sum of thicknesses on the optical axis of the first lens unit and the second lens unit, and focal lengths of the entire zoom lens at a wide-angle end and at a telephoto end are appropriately set.
摘要:
A process for producing an aluminum pipe is disclosed which has the steps of cutting the aluminum pipe on its periphery, and thereafter carrying out rotary pressure rolling. Also, an electrophotographic photosensitive member, a device unit, an electrophotographic apparatus and a developing roll having the aluminum pipe are disclosed.
摘要:
A process for producing an aluminum pipe is disclosed which has the steps of cutting the aluminum pipe on its periphery, and thereafter carrying out rotary pressure rolling. Also, an electrophotographic photosensitive member, a device unit, an electrophotographic apparatus and a developing roll having the aluminum pipe are disclosed.
摘要:
A zoom lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power. The first to fourth lens units are arranged in order from the object side to the image side. All of the lens units are moved during zooming from the wide-angle end to the telephoto end. In the zoom lens, a number of lenses in each of the lens units, imaging magnifications on the telephoto end and the wide-angle end of the second lens unit and the third lens unit, a sum of thicknesses on the optical axis of the first lens unit and the second lens unit, and focal lengths of the entire zoom lens at a wide-angle end and at a telephoto end are appropriately set.
摘要:
In a medical-image observation apparatus, an image display-area display-control unit causes a display unit to display a main examination area for displaying a thumbnail of a medical image to be read, and an observation-image preparation area for displaying a thumbnail of a medical image selected as a medical image to be used for comparative image reading. After a reading-subject image display-control unit causes the display unit to display a thumbnail of a medical image to be read in the main examination area, upon receiving an operation of moving the medical image of which thumbnail is displayed in the main examination area into the observation-image preparation area, a comparison-subject image display-control unit specifies a medical image to be a comparison subject based on attribution information about the moved medical image, and causes the display unit to display a thumbnail of the specified medical image.