A projection display device includes: a light source that emits a first and a second laser lights; a scanning drive mirror that reflects the first and the second laser lights, and uses the first and the second laser lights in scanning; a light diffusion unit that includes a predetermined region that allows the first laser light to be transmitted therethrough, and diffuses the first laser light; a light detection unit that detects the second laser light that passed the predetermined region; and a control unit that executes a process to detect the second laser light, and determines a state of the predetermined region on the basis of a detection value of the light detection unit. In a case where the control unit determines that a defect occurs in the predetermined region as the state, the control unit executes a process to stop displaying the projection.

A microlens array includes N lenses ranging from a 1.sup.st lens to an N.sup.th lens and a lens arrangement area. N is a positive integer. The lens arrangement area has the N lenses arranged in array. The lens arrangement area receives light emitted from a light source. An i.sup.th (i being 1.sup.st to N.sup.th) lens satisfies a conditional expression below:

2020 where denotes an angle formed by a main-axis orientation of double refraction and a reference orientation.

A projection display device includes: a light source that emits a first laser light for displaying a projection and a second laser light for inspection; a scanning drive mirror that reflects the first laser light and the second laser light emitted from the light source, and uses the first laser light and the second laser light in scanning; a light diffusion unit that allows the first laser light used in the scanning by the scanning drive mirror to be transmitted through the light diffusion unit and diffuses the first laser light; a light selection unit that allows the first laser light to be transmitted through the light selection unit and reflects the second laser light at a position on an emission surface of the light diffusion unit; and a light detection unit that detects the second laser light reflected by the light selection unit.

Provided are a device and method for data projection, in particular for windshields. A holographic element (11) is used here, in particular an imaging holographic element.

A head-up display system of a vehicle visually transmits information to eyes of a first occupant and eyes of a second occupant. The system includes an illumination device emitting first and second display lights having first and second polarizations, respectively. The system includes a windshield and a holographic panel including first and second layers. The display lights emit toward the holographic panel at an entrance angle relative to an axis normal to the holographic panel. The first layer diffracts the first display light having the first polarization in a first exit direction at a first exit angle relative to the axis toward the eyes of the first occupant. The second layer diffracts the second display light having the second polarization in a second exit direction at a second exit angle relative to the axis, and different than the first exit angle, toward the eyes of the second occupant.

A head-up display 10 includes a MEMS mirror component 14 for displaying images and a combiner 12 for reflecting light from the MEMS mirror component 14 so that an observer observes reflected light as a virtual image and for transmitting ambient light. The combiner 12 includes a green light reflecting portion 17 for selectively reflecting mainly green light in a green light wavelength region, a red light reflecting portion 16 for selectively reflecting mainly red light in a red light wavelength region, and a blue light reflecting portion 18 for reflecting blue light in a blue light wavelength region. The light reflecting portions 16 to 18 are laid in layers. The green light reflecting portion 17 is arranged the closest to the MEMS mirror component 14.

A system and method are provided and include a light source projector with a positional actuator mounted on a subject vehicle that projects laser lines on a roadway upon which the subject vehicle is traveling. A controller receives steering angle data from a steering system of the subject vehicle, the steering angle data corresponding to a steering angle of the subject vehicle. The controller determines a turning path of the subject vehicle based on the steering angle data and controls the positional actuator to project the laser lines on the roadway to correspond to the determined turning path of the subject vehicle.

An image generation apparatus for generating an image includes a light source device; an optical deflection device to deflect laser beam from the light source device to a scanned face arid a light detector; a light quantity adjustment device including a member disposable on a light path of the laser beam between the light source device and the optical deflection device; an emission light intensity adjustment unit to adjust emission light intensity of the light source device; and a controller to set a first adjustment target value of emission light intensity and an adjustment target value of light quantity when laser beam is deflected to the scanned face based on target luminance of the image, and a second adjustment target value of emission light intensity when laser beam is deflected to the light detector based on an adjustment target value of light quantity and detection sensitivity of the light detector.

The present invention relates to a heads up display system for a vehicle interior that includes a light modifying panel configured to cyclically transition between a substantially light transmissive state that facilitates light passage through the light modifying panel and a partially reflective state that facilitates light reflection toward a occupant of a vehicle. The heads up display system also includes a pulsating light source configured to cyclically project an image onto the light modifying panel, and a controller configured to control the pulsating light source and the light modifying panel so that the image is projected onto the light modifying panel while the light modifying panel is in the partially reflective state.

A driver can intuitively and conveniently perform an operation for instructing passing to a vehicle. In a driving support device 10, an image output unit 14a outputs, to a display unit 31, an image containing an own vehicle object representing an own vehicle and an another vehicle object representing another vehicle in front of the own vehicle object. An operation signal input unit 14b receives an operation of a user for changing the positional relationship between the own vehicle object and the another vehicle object in the image displayed on the display unit 31. A command output unit 14c outputs, to an automatic driving control unit 20, a command for instructing the own vehicle to pass the another vehicle when the positional relationship between the own vehicle object and the another vehicle object is changed such that the own vehicle object is positioned in front of the another vehicle object.