Abstract: A variable magnification optical system consists of, in order from an object side to an image side, a first lens group, a second lens group, and a subsequent lens group. The variable magnification optical system satisfies a predetermined conditional expression for a partial dispersion ratio related to F line, C line, and a wavelength of 1970.09 nm, a d-line back focus of the variable magnification optical system at a telephoto end, a back focus in any one wavelength from a wavelength of 1300 nm to a wavelength of 2325.42 nm at the telephoto end, and a d-line focal length of the variable magnification optical system at the telephoto end.

Abstract: Provided is an imaging control device including: a processor; and a memory connected to or built in the processor. The processor acquires a first image by causing an image sensor of an imaging apparatus to image first light with a first sensitivity, and acquires a second image by causing the image sensor to image second light with a second sensitivity. The first sensitivity is a sensitivity for representing shape information of a subject with a first gradation in the first image. The second sensitivity is a sensitivity for representing temperature information of the subject with a second gradation in the second image.

Abstract: Provided is a lens device provided in an imaging apparatus body including an image sensor, the lens device including a lens that includes a shake correction lens correcting a shake of an image obtained by imaging light on the image sensor, and images the light, which is incident, on the image sensor, a first drive mechanism that moves the shake correction lens in a direction in which the shake of the image is corrected, by applying power to the shake correction lens along a coordinate plane intersecting an optical axis of the lens, and a second drive mechanism that moves the shake correction lens in a direction in which the image is shifted, by applying power to the shake correction lens along the coordinate plane.

Abstract: Provided is a lens device provided in an imaging apparatus body including an image sensor, the lens device including a processor, a a memory coupled to or integrated with the processor, a lens that includes a movement lens and that images incident light on the image sensor, and a drive mechanism that moves the movement lens by applying power to the movement lens along a coordinate plane intersecting an optical axis of the lens. The processor is configured to perform, with respect to the drive mechanism, control of changing a movement amount of the movement lens based on a wavelength range of the light transmitted through the movement lens.

Abstract: A processor of a lens device is configured to acquire inclination information related to at least one of an inclination of a first drive axis of a drive mechanism with respect to a first axis of an image sensor or an inclination of a second drive axis of the drive mechanism with respect to a second axis of the image sensor, and perform, with respect to the drive mechanism, control of moving a movement lens along at least one of the first axis or the second axis based on the inclination information.

Abstract: An imaging lens consisting of, in order from an object side to an image side: a first lens group; a stop; and a second lens group having a positive refractive power, in which the first lens group includes three or more Ln lenses that are consecutively disposed, the Ln lens is a negative lens in which a surface on the image side is a concave surface, and in a case in which, among the three or more Ln lenses that are consecutively disposed and included in the first lens group, for two Ln lenses selected in descending order of refractive power, an average of Abbe numbers and an average of partial dispersion ratios are included within a predetermined region in a Cartesian coordinate system with a horizontal axis representing Abbe number and a vertical axis representing partial dispersion ratio.

Abstract: An imaging apparatus includes an optical element that extracts a plurality of pieces of band light from incident light incident on an optical system, a photoelectric conversion device capable of imaging the plurality of pieces of band light extracted from the incident light by the optical element, and a processor that outputs image data obtained by imaging band light, among the plurality of pieces of band light, selected according to an imaging condition determined based on a field of view by the photoelectric conversion device.

Abstract: Provided are an imaging controller, an operation method and program of the imaging controller, and a camera capable of presenting a radiation image of a subject to a user in an easy-to-understand manner. An image sensor driving control unit causes an image sensor to image a visible ray to acquire a first image including a reflected image of a subject. The image sensor driving control unit causes the image sensor to image an infrared ray to acquire a second image including the reflected image and a radiation image of the subject. A zoom lens driving control unit moves a zoom lens along an optical axis to correct a difference in angle of view between the first image and the second image. Image processing units output difference images between the first image and the second image acquired in a state in which the difference in angle of view is corrected.

Abstract: A variable magnification optical system consists of, in order from an object side to an image side, a first lens group, a second lens group, and a subsequent lens group. The variable magnification optical system satisfies a predetermined conditional expression for a partial dispersion ratio related to F line, C line, and a wavelength of 1970.09 nm, a d-line back focus of the variable magnification optical system at a telephoto end, a back focus in any one wavelength from a wavelength of 1300 nm to a wavelength of 2325.42 nm at the telephoto end, and a d-line focal length of the variable magnification optical system at the telephoto end.

Abstract: A variable magnification optical system consists of, in order from an object side to an image side, a first lens group, a second lens group, and a subsequent lens group. The variable magnification optical system satisfies a predetermined conditional expression for a partial dispersion ratio related to F line, C line, and a wavelength of 1970.09 nm, a d-line back focus of the variable magnification optical system at a telephoto end, a back focus in any one wavelength from a wavelength of 1300 nm to a wavelength of 2325.42 nm at the telephoto end, and a d-line focal length of the variable magnification optical system at the telephoto end.

Abstract: An imaging apparatus includes a first optical system, a first separation optical system that separates the light transmitted through the first optical system into the first wavelength range light and the second wavelength range light, a second optical system that transmits the first wavelength range light obtained by the first separation optical system, a third optical system that transmits the second wavelength range light obtained by the first separation optical system, a first image sensor that receives the first wavelength range light, a second image sensor that receives the second wavelength range light, and a first light source that emits the first wavelength range light, in which the first optical system emits the first wavelength range light emitted from the first light source to a subject, and transmits subject light including first wavelength range reflected light obtained by reflecting the first wavelength range light by the subject.

Abstract: An imaging system includes an imaging apparatus including a first optical system that transmits first wavelength range light, and a first image sensor that receives the first wavelength range light guided by the first optical system, and a projector including a first light source that emits the first wavelength range light, and a second optical system that emits the first wavelength range light emitted from the first light source to a subject side, in which an optical specification of the first optical system and an optical specification of the second optical system correspond to each other, the first optical system includes a first optical element that is displaced by receiving power generated by a first drive source, and the second optical system includes a second optical element that is displaced by receiving power generated by a second drive source.

Abstract: A lens control device includes a processor that performs a control of generating image data for each of first wavelength range light and second wavelength range light by an image sensor, in which the processor estimates a first focus position of a focus lens for the first wavelength range light based on a first focus evaluation value determined in accordance with the image data of the first wavelength range light, estimates a second focus position of the focus lens for the first wavelength range light based on a second focus evaluation value determined in accordance with the image data of the second wavelength range light, and performs a control of moving the focus lens along an optical axis based on the first focus position in a case in which a comparison result obtained by comparing the first focus position with the second focus position satisfies a predetermined condition.

Abstract: An imaging apparatus includes an imaging optical system that has a light transmission characteristic of transmitting near-infrared light in a near-infrared light wavelength range including 1550 nm, and an imaging sensor that outputs an imaging signal by imaging the near-infrared light transmitted through the imaging optical system, the imaging sensor has sensitivity to heat radiation from a subject, and the imaging signal includes information regarding a heat radiation image by the heat radiation.

Abstract: The imaging lens consists of a positive first lens group, a stop, and a positive second lens group in order from the object side to the image side. An Ln lens, which is a negative lens having an absolute value of a curvature radius of an image side surface smaller than an absolute value of a curvature radius of an object side surface, is disposed at a position closest to the image side in the first lens group. In a Cartesian coordinate system in which a horizontal axis is an Abbe number ? and a vertical axis is a partial dispersion ratio ?, ? and ? of the Ln lens are included in a predetermined region.

Abstract: A variable magnification optical system consists of, in order from an object side to an image side, a first lens group, a second lens group, and a subsequent lens group. The variable magnification optical system satisfies a predetermined conditional expression for a partial dispersion ratio related to F line, C line, and a wavelength of 1970.09 nm, a d-line back focus of the variable magnification optical system at a telephoto end, a back focus in any one wavelength from a wavelength of 1300 nm to a wavelength of 2325.42 nm at the telephoto end, and a d-line focal length of the variable magnification optical system at the telephoto end.

Abstract: The zoom lens includes, in order from the object side, a first lens group that has a positive refractive power, a second lens group that has a negative refractive power, a third lens group that has a positive refractive power, a fourth lens group that has a positive refractive power and has a stop disposed to be closest to the object side. During zooming, the second lens group and the third lens group move, and the other lens groups remain stationary. The first lens group consists of, in order from the object side, two groups of cemented lenses in which a negative meniscus lens and a positive lens are cemented, and a cemented lens in which a positive lens and a negative lens are cemented. During focusing, only the cemented lens closest to the image side in the first lens group moves.

Abstract: A dome-type camera includes a dome cover (11) and a camera unit (12). The dome cover (11) has a front surface (21) and a back surface (22). The camera unit (12) includes an optical system (13) and an imaging element (14). The optical system (13) is disposed on the back surface (22) side of the dome cover (11), and the imaging element (14) outputs image data on the basis of imaging light received via the optical system (13). At least the back surface (22) out of the front surface (21) and the back surface (22) of the dome cover (11) has at least an aspheric shape in which optical properties are continuously changed at a location other than a top t of the dome cover (11).

Abstract: The imaging lens includes, in order from the object side, a first lens group that remains stationary during focusing; a diaphragm; and a positive second lens group that moves to the object side during focusing from a long range to a close range. The second lens group includes a positive Z lens that is formed continuously in order from a most image side, a negative Y lens that has an absolute value of a radius of curvature of an object side surface smaller than an absolute value of a radius of curvature of an image side surface, a positive X lens, and a negative W lens that has an absolute value of a radius of curvature of an image side surface smaller than that of an object side surface. The imaging lens satisfies a conditional expression about of the radii of curvature of the X lens and the W lens.

Abstract: A dome-type camera includes a dome cover (11) and a camera unit (12). The dome cover (11) has a front surface (21) and a back surface (22). The camera unit (12) includes an optical system (13) and an imaging element (14). The optical system (13) is disposed on the back surface (22) side of the dome cover (11), and the imaging element (14) outputs image data on the basis of imaging light received via the optical system (13). At least the back surface (22) out of the front surface (21) and the back surface (22) of the dome cover (11) has at least an aspheric shape in which optical properties are continuously changed at a location other than a top t of the dome cover (11).