Abstract:
A head-up display (100) projects an image on a windshield (220) to allow a viewer to visually observe a virtual image. The head-up display (100) includes a display device (110), a relay optical system (120), and a projection optical system (130). The display device (110) displays an image. The relay optical system (120) provides the image displayed by the display device (110) as an intermediate image. The projection optical system (130) reflects the intermediate image provided by the relay optical system (120) to project the intermediate image on the windshield (220).
Abstract:
Head-up display (100), which is mounted on a vehicle, performs projection on a transparent reflective member, and allows an observer to visually recognize a virtual image, includes display device (110) that displays an image, and a projection optical system that has refractive optical system (123) and projects displayed image (111) displayed by display device (110) on eye box (300) of the observer. As an angle formed between a vector of a light beam that is incident on refractive optical system (123) and a vector of an output light beam, the angle is greater at a light beam on an image end passing through a vehicle inner side of refractive optical system (123) than at a light beam on an image end passing through a vehicle outer side of refractive optical system (123).
Abstract:
A head-up display includes a first display device having a first display element and a combiner; a second display device including a second display element and a second optical system having a first mirror and a second mirror; and a housing having an opening. The first display element is disposed at a back of a vehicle relative to the opening, and the second mirror is disposed at a front of the vehicle relative to the opening.
Abstract:
To provide a display device that can suppress generation of a double image. Display device (100) includes plate-shape windshield (100b) having translucency and a projection unit that projects light expressing an image onto windshield (100b) such that the light is reflected toward a user by windshield (100b). The projection unit changes a display distance between an eye of the user and a position of an image visually recognized as a virtual image by the user through windshield (100b) by the light projection. Windshield (100b) is formed such that a wedge angle that is of an angle formed between a front side and a back side at a region located at any level of windshield (100b) is continuously decreased with increasing level.
Abstract:
A light beam that is emitted from a center of display surface (111) and reaches a center of a viewing area is referred to as reference light beam (Lc). An intersection of reference light beam (Lc) with reflective surface (121a) of first reflective element (121) is referred to as reference intersection point (121c). A plane including reference light beam (Lc) incident on first reflective element (121) and reference light beam (Lc) reflected by first reflective element (121) is referred to as a reference plane. An intersection line of reflective surface (121a) of first reflective element (121) with the reference plane is referred to as reference intersection line (Bc). A tangent plane of reflective surface (121a) of first reflective element (121) at reference intersection point (121c) is referred to as reference tangent plane (170). Respective heights from two points, vertically upper point (170u) and vertically lower point (1701), which are equidistant from reference intersection point (121c) on reference tangent plane (170), to reflective surface (121a) of first reflective element (121) are referred to as a sag. When perpendiculars (121u, 1211) intersect with reference intersection line (Bc), a sag at point (1701) is greater than a sag at point (170u).
Abstract:
A head-up display according to the present disclosure is mounted to a vehicle having a windshield and allows an observer to visually recognize a virtual image. The head-up display includes a display element configured to display an image, a reflection optical system configured to reflect the image displayed by the display element and project the image onto the windshield, and a refraction optical system disposed between the reflection optical system and the windshield and having optical power. The reflection optical system reflects the image toward the refraction optical system. The head-up display is configured such that a position where a center optical path of the image emitted from the display element is incident on the refraction optical system is located at a side of the windshield of the vehicle relative to a center axis of the refraction optical system.
Abstract:
The present invention provides a display device that can easily perform control for driving a movable screen. Display device (2) includes light source (36) that emits a light beam, scanner (38) that causes the light beam from light source (36) to scan, movable screen (28) in which a first image is formed by transmitting the light beam from scanner (38), projection unit (32) that displays a virtual image of the first image in a space, and driver (30) that causes movable screen (28) to reciprocate in a first direction separating from scanner (38) and in a second direction approaching scanner (38). Movable screen (28) reciprocates in a posture inclined to moving directions of movable screen (28).
Abstract:
A display device displays a virtual image of a first picture and a virtual image of a second picture by using a display medium. This display device includes a light source that emits light, a fixed screen, a movable screen, a driver, and a scanner. The fixed screen is fixedly disposed on an optical path between the light source and the display medium. The movable screen is also disposed on this optical path. The driver moves the movable screen along the optical path. The scanner scans the fixed screen and the movable screen with the light emitted from the light source, thereby forming the first picture on the fixed screen and the second picture on the movable screen.
Abstract:
Head-up display (100) projects an image on windshield (220) to allow an observer to visually recognize a virtual image. Head-up display (100) includes display device (110) and projection optical system (120). Projection optical system (120) includes refractive optical system (121) and concave mirror (122). Display device (110) displays an image to be displayed. Projection optical system (120) projects the image to be displayed on display device (110) to a visual point of the observer. Refractive optical system (121) includes at least one optical element. Concave mirror (122) has a concave reflection surface. Refractive optical system (121) is positioned between display device (110) and concave mirror (122) on an optical path. A surface of the optical element to which light of the image to be displayed on display device (110) is first incident is a concave surface.
Abstract:
A head-up display is mounted to a vehicle having a windshield, and includes a display element configured to display an image, a first optical system configured to reflect the image displayed by the display element and project the image onto the windshield; and a second optical system configured to reflect the image displayed by the display element and project the image onto the windshield. The image projected with the first optical system is projected onto the windshield at a position below a position of the image projected with the second optical system.