A method for displaying virtual content to a user, the method includes determining an accommodation of the user's eyes. The method also includes delivering, through a first waveguide of a stack of waveguides, light rays having a first wavefront curvature based at least in part on the determined accommodation, wherein the first wavefront curvature corresponds to a focal distance of the determined accommodation. The method further includes delivering, through a second waveguide of the stack of waveguides, light rays having a second wavefront curvature, the second wavefront curvature associated with a predetermined margin of the focal distance of the determined accommodation.

Several embodiments of a personal display system are disclosed that comprises modular and extensible features to affect a range of user/wearer/viewer experiences. In one embodiment, the personal display system comprises a frame; a processor capable of sending image data signals and control signals; a display; an optic system, said optic system optically coupled to said at least one display; and a set of actuators, said actuators coupled to said frame and in communication with the optic system, such that said set of actuators are capable of moving the optic system, according to control signals sent from said processor. In another embodiment, a method for pre-warping input image data under processor control and according to ambient conditions, such as light and temperature, is disclosed.

Provided are a projection-type display device, a safe-driving support method, and a non-transitory computer readable recording medium storing a safe-driving support program capable of securing safety while providing sufficient information to a driver even in a situation where a field of vision in a traveling direction of a motor vehicle is poor. An HUD includes a light modulation unit that modulates light emitted from a light source unit; a projection unit that projects the light modulated by the light modulation unit onto a combiner; a first image information generation unit that generates first image information and outputs the first image information to the light modulation unit; a second image information generation unit that generates second image information and outputs the second image information to a display device; and a control unit that controls operations of the first image information generation unit and the second image information generation unit.

Provided are a projection-type display device, an electronic device, a driver viewing image sharing method, and a non-transitory computer readable recording medium storing a driver viewing image sharing program. An HUD comprises a captured image data acquisition unit that acquires captured image data from an imaging unit that captures ahead of a windshield, a projection image data generation unit that analyzes the acquired captured image data and generates projection image data, a projection unit that modulates light emitted from a light source unit according to the projection image data and projects the modulated light onto a combiner, a driver viewing image data generation unit that generates driver viewing image data in which the projection image data is overlapped on the captured image data, and a communication unit that transmits the driver viewing image data to an electronic device that includes a display unit and exists in the motor vehicle.

A vehicle head-up display device includes a stepping motor that outputs a rotation to adjust an optical position of a reflecting mirror, a zero detection unit that detects a zero position by the rotation of the stepping motor in a return-to-zero direction, an initial adjustment unit that adjusts the optical position to an initial position based on the zero position by the rotation of the stepping motor in an away-from-zero direction, and a user adjustment unit that, after the adjustment of the initial position, adjusts the optical position to a command position based on the zero position responsive to a command from the vehicle user. The zero detection unit sets a higher rotation speed of the stepping motor than the user adjustment unit, and sets a lower output torque than the user adjustment unit.

An image display apparatus includes an image forming apparatus 30, an optical element 40 that is arranged in front of a face of an observer 80, and a movement control apparatus. When a region 85 situated on the side of the ear of the observer 80, as viewed from the optical element 40, is referred to as a region situated behind the optical element, the image forming apparatus 30 is arranged in the region situated behind the optical element. An image exiting the image forming apparatus 30 obliquely enters the optical element 40 from the region situated behind the optical element, and is reflected off the optical element 40 to reach a pupil 82 of the observer 80. When there is a change in the position of the pupil 82 of the observer 80, the optical element 40 is moved using the movement control apparatus, and the position of the image exiting the image forming apparatus 30 is controlled using the movement control apparatus.

An electronic device may include a display module that produces light having an image, a lens that directs the light to a waveguide, and a waveguide that directs the light to an eye box. The lens may produce a foveated image in the light by applying a non-uniform magnification to the image in the light. The non-uniform magnification may vary as a function of angle within a field of view of the lens. This may allow the foveated image to have higher resolution within the central region than in the peripheral region. Performing foveation using the lens maximizes the resolution of images at the eye box without increasing the size of the display module. Control circuitry on the device may apply a pre-distortion to the image that is an inverse of distortion introduced by the lens in producing the foveated image.

Eyewear including a support structure defining a region for receiving a head of a user. The support structure supports optical elements, electronic components, and a use detector. The use detector is coupled to the electronic components and is positioned to identify when the head of the user is within the region defined by the support structure. The electronic components monitor the use detector and transition from a first mode of operation to a second mode of operation when the use detector senses the head of the user in the region.

The head-up display device includes a display element that emits image light and a virtual image optical system. The virtual image optical system includes a lens unit and a free curved surface mirror disposed along the emission direction of the image light in this order from a position close to the display element. The display element is disposed with a tilting attitude with respect to the optical axis of the lens unit with an end on the housing aperture side in an emission surface being close to an incidence surface in the lens unit and with an end on the opposite side of the housing aperture in an emission surface being apart from an incidence surface in the lens unit. The lens unit has an optical characteristic of optically enlarging an optical path length difference according to a virtual image distance difference.

A wearable computing device includes: a wearable housing; a display assembly supported by the housing and switchable between (i) an active configuration to occlude an optical path between an operator field of view and an exterior of the wearable computing device, and (ii) a fail-safe configuration to clear the optical path; and a mitigation subsystem including an actuator controllable to switch the display assembly from the active configuration to the fail-safe configuration in response to detection of a display failure condition.