A head-up display device includes: an image formation unit which emits light including image information; and a projection optical system including an ocular optical system which displays a virtual image by reflecting the light emitted from the image formation unit. The ocular optical system includes spherical lenses, a free-form curved surface lens, a reflection mirror, and a free-form curved surface mirror, and is configured by arranging, in a space on the side of the ocular optical system of a plane conjugate with the virtual image plane with respect to the ocular optical system, a first small lens system which achieves first focus position movement and on which separated light from the image formation unit is made to be incident, and a second small lens system which achieves second focus position movement and on which separated light from the image formation unit is made to be incident.

The liquid crystal illumination device includes a light source projecting light to a liquid crystal panel, a first diffusion unit diffusing the projected light, a first light guide unit including a radially widened reflection surface and reflect the diffused light at the reflection surface, a reflecting mirror including an opening, part of the light guided by the first light guide unit being reflected and returned to inside the first light guide unit, and remaining light passing through the opening, a light collecting unit collecting light passing through an opening on the reflecting mirror, and a second diffusion unit diffusing the collected light toward the liquid crystal panel. The opening on the reflecting mirror is formed correspondingly to a display region where the liquid crystal panel display an image. A haze value of the first diffusion unit is set to a value higher than that of the second diffusion unit.

Disclosed is a system for detecting command gestures made by a finger of a driver of a motor vehicle, including an interface pad, a light source that emits an optical beam in the infrared band toward the interface pad, an imaging sensor, for capturing images steered by the interface pad away from the driver, with a base frame and a movable plate, an optical zone of interest seen by the imaging sensor being defined at the interface between the base frame and the movable plate, the interface pad including an elastic deformable seal interposed between the base frame and the movable plate, the deformable seal including a first inclined facet, so that an optical path passing via the first inclined facet is proportionally modified by the deformation of the seal under the effect of the movement of the movable pad.

A virtual human-machine interface system for a vehicle including at least one projection surface disposed within the vehicle and a corresponding virtual human-machine interface method for a vehicle are provided. The virtual human-machine interface system comprises at least one micro-mirror projection device for projecting an image on the at least one projection surface, at least one sensor for detecting commands given by a user by determining the position of a part of the user's body within the vehicle, and a control unit for controlling the human-machine interface system. The position of the image projected by the at least one projection device within the vehicle may be modified by a specific command given by the user.

An angle-adjusting mechanism is provided. The angle-adjusting mechanism includes a reflecting assembly, a transmission assembly and a driving unit. The reflecting assembly includes a reflecting plate. The transmission assembly includes a transmission rod and a connecting element disposed on the transmission rod. The transmission assembly is connected to the reflecting assembly via the connecting element. The driving unit is configured to drive the transmission rod to move the reflecting assembly.

A head-up display device includes: an illumination light source unit configured to emit illumination light; an image forming unit configured to form the image by partial transmission of the illumination light and to emit the image as the display light; and an anisotropic diffusion unit disposed on an optical path between the illumination light source unit and the image forming unit to diffuse the illumination light at an anisotropic diffusion angle. When the image is displayed as a virtual image, the image is defined to have an image up-down axis in a direction along an up-down direction of the vehicle and an image left-right axis perpendicular to the image up-down axis. The diffusion angle in the anisotropic diffusion unit is larger in a direction corresponding to the image left-right axis than in a direction corresponding to the image up-down axis.

Disclosed is a touchpad system forming a human-machine interface, intended for a vehicle steering wheel. The touchpad system includes a light source illuminating the touchpad and a camera capturing light coming from the touchpad. The touchpad includes a first marker able to reflect the light coming from the light source, and the touchpad, with the exception of the first marker, being transparent to the light emitted by the light source. The system is notable in particular in that pressure on the touchpad causes the touchpad to move and in that, when the touchpad is in a first position, the first marker is not visible to the camera and, when the touchpad is in a second position, the first marker is visible to the camera.

Provided is a small-sized information display device displaying video image information as a virtual image by use of an eyepiece optical system including a concave mirror having desired reflection characteristics in a specific polarization direction, where a liquid crystal display panel is used as a video image light source. The information display device has a liquid crystal display panel as a flat display forming video image information disposed therein, and includes a virtual image optical system including a member to be projected for displaying virtual images in front of a vehicle by making a video image displayed on the liquid crystal display panel reflect on the member to be projected. The virtual image optical system includes a concave mirror, and a reflective film of the concave mirror has desired reflection characteristics in a specific polarization direction, so that virtual images having uniform brightness and chromaticity can be obtained.

A scanning-type display device includes: a light source which emits projection-display laser light; an optical scanning unit which uses the laser light emitted from the light source in scanning; and a light diffusion unit which includes a plurality of light diffusion channels arranged in two dimensions and diffuses the laser light used in scanning by the optical scanning unit. The light diffusion unit is configured so that an angle formed by optical paths extending to an eye of an observer through a pair of adjacent light diffusion channels arbitrarily selected from among the plurality of light diffusion channels becomes equal to or larger than an angle set on the basis of a resolution angle of the eye.

A display device and a mobile object. The display device is installable in a mobile object, and includes a light source, an image former to receive light emitted from the light source and output image light that forms an image, a screen on which the image light forms the image, a housing that houses the light source and the image former, and a holding member to hold the screen. The holding member is attached to the housing with a normal direction of a surface of the screen intersecting with a vertical direction and with a front-and-rear direction of the mobile object. A width of the housing is narrower than a width of the holding member. The mobile object includes the display device, a front windshield to reflect the image light, and an image-forming optical system to project the image light projected from the screen toward the front windshield.