A projection apparatus includes a display element that displays an image, a projection optical system that forms a projection image by projecting the image, an imaging unit that includes an imaging optical system which images a first region including an optical axis of the projection optical system in the projection image, and an imaging element which captures an image formed by the imaging optical system, and a processor that controls focus adjustment on a second region not including the optical axis in the projection image based on information acquired from the imaging unit, in which a position of the projection image is changeable by changing a relative position between at least a part of the projection optical system and the display element, and a predetermined conditional expression is satisfied.

A projection apparatus includes a display element that displays an image, a projection optical system that forms a projection image by projecting the image, an imaging unit that includes an imaging optical system which images a first region including an optical axis of the projection optical system in the projection image, and an imaging element which captures an image formed by the imaging optical system, and a processor that controls focus adjustment on a second region not including the optical axis in the projection image based on information acquired from the imaging unit, in which a position of the projection image is changeable by changing a relative position between at least a part of the projection optical system and the display element, and a predetermined conditional expression is satisfied.

A projector includes a light projector and a position adjuster. The light projector includes a holder holding a plurality of lenses and a movable frame element provided to be pivotable around the optical axis of the plurality of lenses and that pivots to move a target lens out of the plurality of lenses along the optical axis. The position adjuster includes an arm member connected to the movable frame element that pivots along with the movable frame element, an operation member provided to be pivotable around a pivotal axis substantially parallel to the optical axis and pivots when an end portion of the operation member opposite the arm member is moved, and a linkage mechanism that links the arm member to the operation member and causes the arm member to pivot in response to the pivotal motion of the operation member.

Devices and methods for improving the flow of traffic at an intersection are disclosed, such as a traffic light assistance system comprising a light emitter, a light-directing device, a vehicle sensor, a traffic signal detector, and a control unit. The traffic light assistance system can be configured to detect a vehicle and direct projected light toward said vehicle to indicate a change of status of a traffic light. Such devices and methods can alert an operator of a vehicle to a change of status of a traffic light, such as a traffic signal turning green, and indicating that the operator should accelerate the vehicle. By providing means to alert otherwise distracted or inattentive drivers, time spent in traffic can be reduced.

Devices and methods for improving the flow of traffic at an intersection are disclosed, such as a traffic light assistance system comprising a light emitter, a light-directing device, a vehicle sensor, a traffic signal detector, and a control unit. The traffic light assistance system can be configured to detect a vehicle and direct projected light toward said vehicle to indicate a change of status of a traffic light. Such devices and methods can alert an operator of a vehicle to a change of status of a traffic light, such as a traffic signal turning green, and indicating that the operator should accelerate the vehicle. By providing means to alert otherwise distracted or inattentive drivers, time spent in traffic can be reduced.

An electronic device and a control method thereof are provided. The control method of an electronic device includes: acquiring first location information on a projection area of an image projected by the electronic device through a sensor; acquiring second location information on a location where a user is located, through the sensor; and performing at least one of an operation corresponding to a voice input of the user or an operation corresponding to image quality processing based on the first location information and the second location information.

An electronic device and a control method thereof are provided. The control method of an electronic device includes: acquiring first location information on a projection area of an image projected by the electronic device through a sensor; acquiring second location information on a location where a user is located, through the sensor; and performing at least one of an operation corresponding to a voice input of the user or an operation corresponding to image quality processing based on the first location information and the second location information.

According to the present invention there is provided a method of projecting images of sewing patterns as templates onto fabrics. The contemplated application for the invention includes sewist making an article of clothing. As such, images of the patterns to be sewn are stored in a storage device for latter access from a computing device that sends them to a projecting device for projection. The projecting devices is then positioned, graduated, calibrated, and set for optimizing the cutting of the fabric. Thereafter, the operator may interactively modify the projected image, and as such initiates the cutting of the fabric, in accordance to the projected sewing patterns.

According to the present invention there is provided a method of projecting images of sewing patterns as templates onto fabrics. The contemplated application for the invention includes sewist making an article of clothing. As such, images of the patterns to be sewn are stored in a storage device for latter access from a computing device that sends them to a projecting device for projection. The projecting devices is then positioned, graduated, calibrated, and set for optimizing the cutting of the fabric. Thereafter, the operator may interactively modify the projected image, and as such initiates the cutting of the fabric, in accordance to the projected sewing patterns.

The present disclosure relates to the technical field of digital projection display, and discloses a projection method and a projection apparatus. The method includes: acquiring a target object image; identifying attribute information of a target object based on the target object image; acquiring preset projection content based on the attribute information of the target object; acquiring a projection path; and projecting a projection screen based on the preset projection content and controlling the projection screen to move along the projection path. In this way, the projection is more flexible and more pertinent.