Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

In a head-mounted display for blocking out an outside world from a user's vision when worn by the user to present a video, an outside world measurement section measures outside world information. A notification information detection section detects whether or not the information measured by the outside world measurement section contains any notification information to be notified to the user. A notification section notifies the user when the notification information detection section detects notification information.

A video transmissive head-mounted display device capable of avoiding danger to a user when worn by the user has an external world image acquired by a first image inputting unit, and the external world image is displayed on a display unit. The head-mounted display device has a second image inputting unit that acquires a binocular image of a wearer. The head-mounted display device is configured so that a control unit determines, from the binocular image of the wearer acquired by the second image inputting unit, that the wearer is awake when both eyes are closed for no longer than a predetermined period of time and that the wearer is asleep when both eyes are closed for a predetermined period of time or longer, and the display unit displays the external world image acquired by the first image inputting unit when the wearer wakes from sleep.

The invention relates to a head-up display device (1) for a vehicle (2) comprising:an image generating unit (4) generating a primary light beam (7) representing a scene to be displayed, andan optical projection system (8, 9) for projecting this scene onto an individual (3) situated inside the vehicle, the optical projection system comprising a return mirror (8) having a first face (10) and a second face (11), the first face being turned towards the image generating unit so as to reflect the primary light beam towards a combiner (9) adapted to form an image (16) of the scene visible by the individual. According to the invention, the device comprises at least one element (18) facing the second face of the return mirror and adapted to emit a secondary light beam (19) in the direction of this second face, the secondary light beam being transmitted through the return mirror towards the combiner forming an image (20) of the element visible by the individual.

A processor may receive environment data associated with a smart environment having one or more intelligent environment device. A processor may analyze the environment data and intelligent environment device information, wherein the intelligent environment device information is associated with the intelligent environment device. A processor may generate a simulation based, at least in part on, the environment data and the intelligent environment data. A processor may identify one or more hazards in the smart environment from the simulation, wherein the one or more hazards are associated with the one or more intelligent environment devices.

The invention relates to a display device (2) for a motor vehicle (1) having a mirror apparatus (13) which has a display element (7) with a semi-transparent mirror surface, and having a drive apparatus (15) by means of which the mirror apparatus (13) can be moved between a storage position and a position of use, wherein the mirror apparatus (13) has a sensor apparatus (22) which is configured to detect, in the position of use of the mirror apparatus (13), a force applied to the display element (7).

The field of the invention is that of viewing systems comprising means for generating stereoscopic images, a viewing device comprising a projector and a semitransparent screen and a pair of stereoscopic glasses. The projector according to the invention comprises means arranged so as to project alternatively a first image emitted at a first wavelength and a second image emitted at a second wavelength different from the first wavelength. The pair of glasses comprises a first filter and a second filter, the first filter transmitting the entirety of the spectrum except a first narrow spectral band centered on the first wavelength and the second filter transmitting the entirety of the spectrum except a second narrow spectral band centered on the second wavelength.

A head-mounted display, a display control method, and a program that facilitate a user to understand proximity between the user and an object around the user are provided. A display block (36) is arranged in front of the eyes of the user wearing a HMD (12). In accordance with proximity between the user and an object around the user, the HMD (12) controls the display block (36) so as to have the user visually recognize a forward direction of the display block (36).