Abstract: A braking control device for controlling braking of a host vehicle. For a state in which a host vehicle is stopped in an intersection by automatic emergency braking and an oncoming vehicle is approaching in an oncoming lane, the host vehicle prohibits secondary braking is prohibited in, flashes a hazard lamp, and prohibits an idling stop. For a state in which it is determined in that the vehicle is stopped and it is determined in that it is safe for the vehicle to start moving, the host vehicle releases stop maintenance braking.

Abstract: An objective lens for an endoscope includes only four lens groups as lens groups, and the four lens groups consist of a negative first lens group, a positive second lens group, a negative third lens group, and a positive fourth lens group that are arranged in this order from an object side. The first lens group is fixed and the second and third lens groups are moved during focusing on an object positioned at the nearest point from an object positioned at the farthest point. The objective lens for an endoscope satisfies a predetermined conditional expression related to a focal length of an entire system and a focal length of the third lens group.

Abstract: An objective optical system for an endoscope consists of, in order from an object side, a negative front group, an aperture stop, and a positive rear group. The front group includes, in order from the object side, only a negative first lens and a cemented lens formed of a negative second lens and a positive third lens cemented to each other, as lenses. The rear group includes, in order from the object side, only a positive fourth lens and a cemented lens formed of a positive fifth lens and a negative sixth lens cemented to each other, as lenses. The objective optical system for an endoscope satisfies predetermined conditional expressions.

Abstract: An objective optical system for an endoscope consisting of, in order from an object side toward an image side: a front group having negative focal power; an aperture stop; and a rear group having positive focal power, wherein: the front group includes only three lenses, which consist of, in order from the object side toward the image side: a first lens having negative focal power; a second lens having negative focal power; and a third lens having positive focal power, the rear group includes only three lenses, which consist of, in order from the object side toward the image side: a fourth lens having positive focal power; a fifth lens having positive focal power; and a sixth lens having negative focal power, the second lens and the third lens are cemented to each other, and the fifth lens and the sixth lens are cemented to each other.

Abstract: An objective optical system for an endoscope consists of, in order from an object side, a negative front group, an aperture stop, and a positive rear group. The front group includes, in order from the object side, only a negative first lens and a cemented lens formed of a negative second lens and a positive third lens cemented to each other, as lenses. The rear group includes, in order from the object side, only a positive fourth lens and a cemented lens formed of a positive fifth lens and a negative sixth lens cemented to each other, as lenses. The objective optical system for an endoscope satisfies predetermined conditional expressions.

Abstract: An objective lens for an endoscope consists of a negative front group, an aperture stop, and a positive rear group that are arranged in this order from an object side. The front group includes only a negative first lens as a lens. The rear group includes only four lenses that consist of a positive second lens, a positive third lens, a fourth lens, and a fifth lens arranged in this order from the object side, as lenses. The fourth lens and the fifth lens have refractive power having signs different from each other and are cemented to each other. Conditional expression determined in advance about the focal lengths of the second lens and the rear group is satisfied.

Abstract: An objective lens for an endoscope includes only four lens groups as lens groups, and the four lens groups consist of a negative first lens group, a positive second lens group, a negative third lens group, and a positive fourth lens group that are arranged in this order from an object side. The first lens group is fixed and the second and third lens groups are moved during focusing on an object positioned at the nearest point from an object positioned at the farthest point. The objective lens for an endoscope satisfies a predetermined conditional expression related to a focal length of an entire system and a focal length of the third lens group.

Abstract: The objective optical system for an endoscope includes a negative front group, an aperture stop, and a positive rear group that are arranged in this order from an object side. The front group includes only a cemented lens in which a negative first lens, a negative second lens, and a positive third lens are cemented in this order from the object side, as a lens. The rear group includes only a cemented lens in which include a positive fourth lens, a positive fifth lens, and a negative sixth lens are cemented in this order from the object side, as a lens. Conditional expressions are satisfied.

Abstract: An objective lens for an endoscope consists of a negative front group, an aperture stop, and a positive rear group that are arranged in this order from an object side. The front group includes only a negative first lens as a lens. The rear group includes only four lenses that consist of a positive second lens, a positive third lens, a fourth lens, and a fifth lens arranged in this order from the object side, as lenses. The fourth lens and the fifth lens have refractive power having signs different from each other and are cemented to each other. Conditional expression determined in advance about the focal lengths of the second lens and the rear group is satisfied.

Abstract: A display control method includes: selecting, by a computer, a predetermined number of edge lines from a plurality of edge lines extracted from a captured image including an image of a structure; selecting the predetermined number of ridge lines from a plurality of ridge lines included in a three-dimensional model of the structure; determining whether a correspondence relationship between a distribution condition of the predetermined number of edge lines in an image region of the image of the structure and a distribution condition of the predetermined number of ridge lines in a projection image region of a first projection image of the three-dimensional model meets a first criterion; and generating, when the correspondence relationship meets the first criterion, a second projection image of the three-dimensional model where a positional relationship of the predetermined number of edge lines corresponds to a positional relationship of the predetermined number of ridge lines.

Abstract: A display control method includes, displaying a first plurality of edge lines extracted from an image that includes a manufactured article, accepting designation for a second plurality of edge lines selected from the displayed first plurality of edge lines, identifying pairs each of which includes an edge line of the second plurality of edge lines and a line of a plurality of lines corresponding to the edge line, the plurality of lines being included in a three-dimensional model, determining a specific display posture of the three-dimensional model such that a positional relation between a first edge line and a first line included in a first pair satisfies a condition and a position of a second edge line and a position of a second line included in a second pair correspond to each other, and superimposing, in accordance with the specific display posture, the three-dimensional model on the image.

Abstract: The objective optical system for an endoscope includes a negative front group, an aperture stop, and a positive rear group that are arranged in this order from an object side. The front group includes only a cemented lens in which a negative first lens, a negative second lens, and a positive third lens are cemented in this order from the object side, as a lens. The rear group includes only a cemented lens in which include a positive fourth lens, a positive fifth lens, and a negative sixth lens are cemented in this order from the object side, as a lens. Conditional expressions are satisfied.

Abstract: A head-up display device is improved in performance by a reduction in size and the satisfactory correction of optical aberration. A head-up display device includes an image display surface that displays an image, a reflective optical surface that is disposed at a position facing an predetermined observation position of an observer, and a projection optical system that projects the image displayed on the image display surface to the reflective optical surface disposed at the predetermined observation position and allows the observer to visually recognize the enlarged image as a virtual image. In a case in which an optical path, which extends from a center of the image display surface and reaches a center of an eye box, is referred to as an optical axis, the projection optical system includes a first mirror and a second mirror in this order from the image display surface and Conditional Expression (1) is satisfied.

Abstract: A head-up display device is improved in performance by a reduction in size and the satisfactory correction of optical aberration. A head-up display device includes a projection optical system that projects an image displayed on an image display surface to a reflective optical surface disposed at a position facing an predetermined observation position of an observer and allows the observer to visually recognize the enlarged image as a virtual image. In a case in which an optical path, which extends from a center of the image display surface and reaches a center of an eye box, is referred to as an optical axis, the projection optical system includes a first mirror having negative power near the optical axis and a second mirror having positive power near the optical axis in this order from the image display surface and Conditional Expressions (1) and (2) are satisfied.

Abstract: A head up display apparatus includes: a first mirror having power; a second mirror having power; and a light shielding member provided with an aperture. The aperture is provided between an image display surface and the second mirror. Display light which is output from the image display surface is reflected by the first mirror, the second mirror, and the first mirror in this order, and reaches a front windshield (image reflection surface) by passing through the aperture.

Abstract: A head-up display device is improved in performance by a reduction in size and the satisfactory correction of optical aberration. A head-up display device includes an image display surface that displays an image, a reflective optical surface that is disposed at a position facing an predetermined observation position of an observer, and a projection optical system that projects the image displayed on the image display surface to the reflective optical surface disposed at the predetermined observation position and allows the observer to visually recognize the enlarged image as a virtual image. In a case in which an optical path, which extends from a center of the image display surface and reaches a center of an eye box, is referred to as an optical axis, the projection optical system includes a first mirror and a second mirror in this order from the image display surface and Conditional Expression (1) is satisfied.

Abstract: A head-up display device is improved in performance by a reduction in size and the satisfactory correction of optical aberration. A head-up display device includes a projection optical system that projects an image displayed on an image display surface to a reflective optical surface disposed at a position facing an predetermined observation position of an observer and allows the observer to visually recognize the enlarged image as a virtual image. In a case in which an optical path, which extends from a center of the image display surface and reaches a center of an eye box, is referred to as an optical axis, the projection optical system includes a first mirror having negative power near the optical axis and a second mirror having positive power near the optical axis in this order from the image display surface and Conditional Expressions (1) and (2) are satisfied.

Abstract: A projection lens includes a compound aspherical lens in which a resin layer is formed on a surface of a glass lens and a lens surface of the resin layer on the air contacting surface side has an aspherical shape. If the glass transition temperature of the resin layer is taken as Tg and its unit is taken as ° C., Tg of at least one of the resin layers is 150<Tg<280. The projection lens is configured to satisfy a given conditional expression with respect to the at least one of the resin layers.

Abstract: A head up display apparatus includes: a first mirror having power; a second mirror having power; and a light shielding member provided with an aperture. The aperture is provided between an image display surface and the second mirror. Display light which is output from the image display surface is reflected by the first mirror, the second mirror, and the first mirror in this order, and reaches a front windshield (image reflection surface) by passing through the aperture.

Abstract: An objective lens for an endoscope consists of, in order from the object side, a negative front group, an aperture stop and a positive rear group. The front group consists of, in order from the object side, a negative first lens and a cemented lens of a negative second lens and a positive third lens cemented together. The rear group consists of, in order from the object side, a positive lens and a cemented lens of a positive lens and a negative lens cemented together. The objective lens for an endoscope satisfies predetermined conditional expressions.