摘要:
There is provided a zoom lens having, in an order of an object-to-image direction, a first lens group having a positive refractive power and fixed with respect to an image plane; a second lens group having a negative refractive power; a third lens group having a positive refractive power and fixed with respect to an optical axis direction; a fourth lens group having a positive refractive power; and a fifth lens group having a positive refractive power and fixed with respect to the optical axis direction. The fifth lens group is composed of a fifth-a lens group having a negative refractive power; a fifth-b lens group having a positive refractive power; and a fifth-c lens group having a positive refractive power, arranged in the order of the object-to-image direction.
摘要:
There is provided a zoom lens having, in an order of an object-to-image direction, a first lens group having a positive refractive power and fixed with respect to an image plane; a second lens group having a negative refractive power; a third lens group having a positive refractive power and fixed with respect to an optical axis direction; a fourth lens group having a positive refractive power; and a fifth lens group having a positive refractive power and fixed with respect to the optical axis direction. The fifth lens group is composed of a fifth-a lens group having a negative refractive power; a fifth-b lens group having a positive refractive power; and a fifth-c lens group having a positive refractive power, arranged in the order of the object-to-image direction.
摘要:
A zoom lens comprising a first lens group having a positive refracting power and its position fixed, a second lens group having a negative refracting power and displacable mainly for magnification, a third lens group having a positive refracting power and its position fixed, and a fourth lens group having a positive refracting power and displacable mainly for correction of the focal position for magnification and focusing. The first lens group includes, viewed from an object, a cemented lens consisting of a first lens which is a concave meniscus lens having a convex surface facing the object side and a second lens which is a convex lens, and a third lens which is a convex meniscus lens having a convex surface facing the object side; the second lens group, viewed from an object, includes a fourth lens which is a concave meniscus lens having a convex surface facing the object side, and a cemented lens consisting of a fifth lens which is a both-side-concave lens, and a sixth lens which is a convex lens; the third lens group includes a seventh lens which is a convex lens; and the fourth lens group, viewed from an object, includes a cemented lens consisting of an eighth lens which is a convex lens having a convex surface facing the object side, a ninth lens which is a concave lens, and a tenth lens which is a convex lens, and wherein the third lens group includes at least one surface constituted by an aspherical surface and in the fourth lens group, at least the surface which is at the object side is constituted by an aspherical surface.
摘要:
A zoom lens with a reduced overall length having a color separating prism therein and a telecentric property with a first lens group (GI) having a positive refractive power and having a fixed position, a second lens group (GII) of the variable magnification type having a negative refractive power and having a position movable for magnification variation, a third lens group (GIII) having a positive refractive power and having a fixed position and a fourth lens group (GIV) having a positive refractive power and having a position variable for adjustment of a focal position upon magnification variation and upon focusing are disposed in order from an object side. At least one face of the two convex lenses in the fourth lens group is formed from an aspheric face.
摘要:
An imaging apparatus includes: a shift lens driven to be shifted; a uniform aberration correction data storing unit storing uniform aberration correction data for correcting uniform aberration; a shift amount calculating unit calculating an amount of aberration correction shift of the shift lens for correcting uniform aberration using the uniform aberration correction data; a shift lens driving unit driving the shift lens to be shifted according to an amount of driving shift based on the amount of aberration correction shift; a concentric aberration correction amount calculating unit calculating an amount of concentric aberration correction for correcting concentric aberration with respect to a process target pixel of an input image signal; and a pixel value correcting unit correcting a pixel value of the process target pixel on the basis of the calculated amount of concentric aberration correction.
摘要:
An artificial vision system which simulates a retinal image obtained when a subject views a standard measuring object by turning his eyeball with respect to an eyeglass lens. An artificial vision lens system corresponding to an ocular optical system and a CCD camera having a CCD plane corresponding to a retina are provided within an artificial vision camera. Rotary movement of the eyeball centering on its turning point with respect to an eyeglass lens is simulated by turning the artificial vision camera in the horizontal direction by a rotary stage and by turning the glass lens in the vertical direction by another rotary stage. Turning and parallel movement mechanisms are provided under a stage on which the lens and the artificial vision camera are mounted so that the artificial vision camera always points toward a predetermined position on the standard object as viewed through the lens.
摘要:
A zoom lens is provided, which includes a first lens group Gr1 having positive refractive power, a second lens group Gr2 having negative refractive power, which is movable in an optical axis direction mainly for zooming (varying power), a third lens group Gr3 having positive refractive power, a fourth lens group Gr4 having negative refractive power, which is movable in the optical axis direction for correcting fluctuations in focal position during zooming and for focusing, and a fifth lens group Gr5 having positive refractive power, which lens groups are arrayed in order from an object side, wherein the first lens group includes a concave lens, a convex lens, and a triple-cemented lens T1 in which a lens L6 made of special low-dispersion glass is sandwiched in the middle, which lenses are arrayed in order from the object side. Thereby, a range from a super wide-angle area to a super telephoto area can be covered with angles of view of not less than 67 degrees at a wide-angle end and not more than 1.6 degrees at a telephoto end, various aberrations can be favorably corrected while providing a zoom ratio of about 40 times, and a zoom lens excellent in mass productivity can be attained.
摘要:
An aberration correction apparatus includes: a correction data holding section that holds correction data on a correction level used to correct chromatic aberration of magnification; a center position discrepancy data holding section that holds center position discrepancy data on the discrepancy between the center of an image area and the position of an aberration center of the chromatic aberration of magnification; an aberration center calculating section that selects one of the center position discrepancy data that corresponds to a combination of the discrepancy variation conditions in an imaging apparatus and calculates the position of the aberration center based on the selected center position discrepancy data; an image height calculating section; a magnification chromatic aberration correction level calculating section; and a pixel value correcting section.
摘要:
A zoom lens is provided, which includes a first lens group Gr1 having positive refractive power, a second lens group Gr2 having negative refractive power, which is movable in an optical axis direction mainly for zooming (varying power), a third lens group Gr3 having positive refractive power, a fourth lens group Gr4 having negative refractive power, which is movable in the optical axis direction for correcting fluctuations in focal position during zooming and for focusing, and a fifth lens group Gr5 having positive refractive power, which lens groups are arrayed in order from an object side, wherein the first lens group includes a concave lens, a convex lens, and a triple-cemented lens T1 in which a lens L6 made of special low-dispersion glass is sandwiched in the middle, which lenses are arrayed in order from the object side. Thereby, a range from a super wide-angle area to a super telephoto area can be covered with angles of view of not less than 67 degrees at a wide-angle end and not more than 1.6 degrees at a telephoto end, various aberrations can be favorably corrected while providing a zoom ratio of about 40 times, and a zoom lens excellent in mass productivity can be attained.
摘要:
An information management device has a provision condition storage unit in which, for each sensor, provision condition information of sensing data generated by a sensor is registered in association with identification information of the sensor, a use condition storage unit in which, for each application that requires use of the sensing data, use condition information of the sensing data required by an application is registered in association with an address of a transmission destination of the sensing data, a sensing data acquisition unit that acquires through communication the sensing data generated by the sensor registered in the provision condition storage unit, and a specification unit that specifies the provision condition information matched with the use condition information by searching the provision condition storage unit for each piece of the use condition information registered in the use condition storage unit.